diff options
Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/graphics/GC.java')
-rwxr-xr-x | bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/graphics/GC.java | 4568 |
1 files changed, 4568 insertions, 0 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/graphics/GC.java b/bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/graphics/GC.java new file mode 100755 index 0000000000..e5e3c8ca44 --- /dev/null +++ b/bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/graphics/GC.java @@ -0,0 +1,4568 @@ +/******************************************************************************* + * Copyright (c) 2000, 2009 IBM Corporation and others. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * IBM Corporation - initial API and implementation + *******************************************************************************/ +package org.eclipse.swt.graphics; + + +import org.eclipse.swt.internal.*; +import org.eclipse.swt.internal.cairo.*; +import org.eclipse.swt.internal.motif.*; +import org.eclipse.swt.*; + +/** + * Class <code>GC</code> is where all of the drawing capabilities that are + * supported by SWT are located. Instances are used to draw on either an + * <code>Image</code>, a <code>Control</code>, or directly on a <code>Display</code>. + * <dl> + * <dt><b>Styles:</b></dt> + * <dd>LEFT_TO_RIGHT, RIGHT_TO_LEFT</dd> + * </dl> + * + * <p> + * The SWT drawing coordinate system is the two-dimensional space with the origin + * (0,0) at the top left corner of the drawing area and with (x,y) values increasing + * to the right and downward respectively. + * </p> + * + * <p> + * The result of drawing on an image that was created with an indexed + * palette using a color that is not in the palette is platform specific. + * Some platforms will match to the nearest color while other will draw + * the color itself. This happens because the allocated image might use + * a direct palette on platforms that do not support indexed palette. + * </p> + * + * <p> + * Application code must explicitly invoke the <code>GC.dispose()</code> + * method to release the operating system resources managed by each instance + * when those instances are no longer required. This is <em>particularly</em> + * important on Windows95 and Windows98 where the operating system has a limited + * number of device contexts available. + * </p> + * + * <p> + * Note: Only one of LEFT_TO_RIGHT and RIGHT_TO_LEFT may be specified. + * </p> + * + * @see org.eclipse.swt.events.PaintEvent + * @see <a href="http://www.eclipse.org/swt/snippets/#gc">GC snippets</a> + * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Examples: GraphicsExample, PaintExample</a> + * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> + */ +public final class GC extends Resource { + /** + * the handle to the OS device context + * (Warning: This field is platform dependent) + * <p> + * <b>IMPORTANT:</b> This field is <em>not</em> part of the SWT + * public API. It is marked public only so that it can be shared + * within the packages provided by SWT. It is not available on all + * platforms and should never be accessed from application code. + * </p> + */ + public int handle; + + Drawable drawable; + GCData data; + + final static int FOREGROUND = 1 << 0; + final static int BACKGROUND = 1 << 1; + final static int FONT = 1 << 2; + final static int LINE_STYLE = 1 << 3; + final static int LINE_CAP = 1 << 4; + final static int LINE_JOIN = 1 << 5; + final static int LINE_WIDTH = 1 << 6; + final static int LINE_MITERLIMIT = 1 << 7; + final static int BACKGROUND_BG = 1 << 8; + final static int FOREGROUND_RGB = 1 << 9; + final static int BACKGROUND_RGB = 1 << 10; + final static int DRAW_OFFSET = 1 << 11; + final static int DRAW = FOREGROUND | LINE_WIDTH | LINE_STYLE | LINE_CAP | LINE_JOIN | LINE_MITERLIMIT | DRAW_OFFSET; + final static int FILL = BACKGROUND; + + static final float[] LINE_DOT = new float[]{1, 1}; + static final float[] LINE_DASH = new float[]{3, 1}; + static final float[] LINE_DASHDOT = new float[]{3, 1, 1, 1}; + static final float[] LINE_DASHDOTDOT = new float[]{3, 1, 1, 1, 1, 1}; + static final float[] LINE_DOT_ZERO = new float[]{3, 3}; + static final float[] LINE_DASH_ZERO = new float[]{18, 6}; + static final float[] LINE_DASHDOT_ZERO = new float[]{9, 6, 3, 6}; + static final float[] LINE_DASHDOTDOT_ZERO = new float[]{9, 3, 3, 3, 3, 3}; + +GC() { +} +/** + * Constructs a new instance of this class which has been + * configured to draw on the specified drawable. Sets the + * foreground color, background color and font in the GC + * to match those in the drawable. + * <p> + * You must dispose the graphics context when it is no longer required. + * </p> + * @param drawable the drawable to draw on + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the drawable is null</li> + * <li>ERROR_NULL_ARGUMENT - if there is no current device</li> + * <li>ERROR_INVALID_ARGUMENT + * - if the drawable is an image that is not a bitmap or an icon + * - if the drawable is an image or printer that is already selected + * into another graphics context</li> + * </ul> + * @exception SWTError <ul> + * <li>ERROR_NO_HANDLES if a handle could not be obtained for GC creation</li> + * <li>ERROR_THREAD_INVALID_ACCESS if not called from the thread that created the drawable</li> + * </ul> + */ +public GC(Drawable drawable) { + this(drawable, 0); +} +/** + * Constructs a new instance of this class which has been + * configured to draw on the specified drawable. Sets the + * foreground color, background color and font in the GC + * to match those in the drawable. + * <p> + * You must dispose the graphics context when it is no longer required. + * </p> + * + * @param drawable the drawable to draw on + * @param style the style of GC to construct + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the drawable is null</li> + * <li>ERROR_NULL_ARGUMENT - if there is no current device</li> + * <li>ERROR_INVALID_ARGUMENT + * - if the drawable is an image that is not a bitmap or an icon + * - if the drawable is an image or printer that is already selected + * into another graphics context</li> + * </ul> + * @exception SWTError <ul> + * <li>ERROR_NO_HANDLES if a handle could not be obtained for GC creation</li> + * <li>ERROR_THREAD_INVALID_ACCESS if not called from the thread that created the drawable</li> + * </ul> + * + * @since 2.1.2 + */ +public GC(Drawable drawable, int style) { + if (drawable == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + GCData data = new GCData(); + data.style = checkStyle(style); + int xGC = drawable.internal_new_GC(data); + Device device = data.device; + if (device == null) device = Device.getDevice(); + if (device == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + this.device = data.device = device; + init(drawable, data, xGC); + init(); +} +static void addCairoString(int cairo, String string, float x, float y, Font font) { + byte[] buffer = Converter.wcsToMbcs(null, string, true); + GC.setCairoFont(cairo, font); + cairo_font_extents_t extents = new cairo_font_extents_t(); + Cairo.cairo_font_extents(cairo, extents); + double baseline = y + extents.ascent; + Cairo.cairo_move_to(cairo, x, baseline); + Cairo.cairo_text_path(cairo, buffer); +} +static int checkStyle (int style) { + if ((style & SWT.LEFT_TO_RIGHT) != 0) style &= ~SWT.RIGHT_TO_LEFT; + return style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT); +} + +void checkGC (int mask) { + int state = data.state; + if ((state & mask) == mask) return; + state = (state ^ mask) & mask; + data.state |= mask; + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + if ((state & (BACKGROUND | FOREGROUND)) != 0) { + XColor color; + Pattern pattern; + if ((state & FOREGROUND) != 0) { + color = data.foreground; + if ((data.state & FOREGROUND_RGB) == 0) { + OS.XQueryColor (data.display, data.colormap, color); + data.state |= FOREGROUND_RGB; + } + pattern = data.foregroundPattern; + data.state &= ~BACKGROUND; + } else { + color = data.background; + if ((data.state & BACKGROUND_RGB) == 0) { + OS.XQueryColor (data.display, data.colormap, color); + data.state |= BACKGROUND_RGB; + } + pattern = data.backgroundPattern; + data.state &= ~FOREGROUND; + } + if (pattern != null) { + Cairo.cairo_set_source(cairo, pattern.handle); + } else { + Cairo.cairo_set_source_rgba(cairo, (color.red & 0xFFFF) / (float)0xFFFF, (color.green & 0xFFFF) / (float)0xFFFF, (color.blue & 0xFFFF) / (float)0xFFFF, data.alpha / (float)0xFF); + } + } + if ((state & FONT) != 0) { + setCairoFont(cairo, data.font); + } + if ((state & LINE_CAP) != 0) { + int cap_style = 0; + switch (data.lineCap) { + case SWT.CAP_ROUND: cap_style = Cairo.CAIRO_LINE_CAP_ROUND; break; + case SWT.CAP_FLAT: cap_style = Cairo.CAIRO_LINE_CAP_BUTT; break; + case SWT.CAP_SQUARE: cap_style = Cairo.CAIRO_LINE_CAP_SQUARE; break; + } + Cairo.cairo_set_line_cap(cairo, cap_style); + } + if ((state & LINE_JOIN) != 0) { + int join_style = 0; + switch (data.lineJoin) { + case SWT.JOIN_MITER: join_style = Cairo.CAIRO_LINE_JOIN_MITER; break; + case SWT.JOIN_ROUND: join_style = Cairo.CAIRO_LINE_JOIN_ROUND; break; + case SWT.JOIN_BEVEL: join_style = Cairo.CAIRO_LINE_JOIN_BEVEL; break; + } + Cairo.cairo_set_line_join(cairo, join_style); + } + if ((state & LINE_WIDTH) != 0) { + Cairo.cairo_set_line_width(cairo, data.lineWidth == 0 ? 1 : data.lineWidth); + switch (data.lineStyle) { + case SWT.LINE_DOT: + case SWT.LINE_DASH: + case SWT.LINE_DASHDOT: + case SWT.LINE_DASHDOTDOT: + state |= LINE_STYLE; + } + } + if ((state & LINE_STYLE) != 0) { + float dashesOffset = 0; + float[] dashes = null; + float width = data.lineWidth; + switch (data.lineStyle) { + case SWT.LINE_SOLID: break; + case SWT.LINE_DASH: dashes = width != 0 ? LINE_DASH : LINE_DASH_ZERO; break; + case SWT.LINE_DOT: dashes = width != 0 ? LINE_DOT : LINE_DOT_ZERO; break; + case SWT.LINE_DASHDOT: dashes = width != 0 ? LINE_DASHDOT : LINE_DASHDOT_ZERO; break; + case SWT.LINE_DASHDOTDOT: dashes = width != 0 ? LINE_DASHDOTDOT : LINE_DASHDOTDOT_ZERO; break; + case SWT.LINE_CUSTOM: dashes = data.lineDashes; break; + } + if (dashes != null) { + dashesOffset = data.lineDashesOffset; + double[] cairoDashes = new double[dashes.length]; + for (int i = 0; i < cairoDashes.length; i++) { + cairoDashes[i] = width == 0 || data.lineStyle == SWT.LINE_CUSTOM ? dashes[i] : dashes[i] * width; + } + Cairo.cairo_set_dash(cairo, cairoDashes, cairoDashes.length, dashesOffset); + } else { + Cairo.cairo_set_dash(cairo, null, 0, 0); + } + } + if ((state & LINE_MITERLIMIT) != 0) { + Cairo.cairo_set_miter_limit(cairo, data.lineMiterLimit); + } + if ((state & DRAW_OFFSET) != 0) { + data.cairoXoffset = data.cairoYoffset = 0; + double[] matrix = new double[6]; + Cairo.cairo_get_matrix(cairo, matrix); + double[] dx = new double[]{1}; + double[] dy = new double[]{1}; + Cairo.cairo_user_to_device_distance(cairo, dx, dy); + double scaling = dx[0]; + if (scaling < 0) scaling = -scaling; + double strokeWidth = data.lineWidth * scaling; + if (strokeWidth == 0 || ((int)strokeWidth % 2) == 1) { + data.cairoXoffset = 0.5 / scaling; + } + scaling = dy[0]; + if (scaling < 0) scaling = -scaling; + strokeWidth = data.lineWidth * scaling; + if (strokeWidth == 0 || ((int)strokeWidth % 2) == 1) { + data.cairoYoffset = 0.5 / scaling; + } + } + return; + } + int xDisplay = data.display; + if ((state & (BACKGROUND | FOREGROUND)) != 0) { + XColor foreground; + if ((state & FOREGROUND) != 0) { + foreground = data.foreground; + data.state &= ~BACKGROUND; + } else { + foreground = data.background; + data.state &= ~FOREGROUND; + } + OS.XSetForeground (xDisplay, handle, foreground.pixel); + } + if ((state & BACKGROUND_BG) != 0) { + XColor background = data.background; + OS.XSetBackground(xDisplay, handle, background.pixel); + } + if ((state & (LINE_CAP | LINE_JOIN | LINE_STYLE | LINE_WIDTH)) != 0) { + int cap_style = 0; + int join_style = 0; + int width = (int)data.lineWidth; + int line_style = 0; + float[] dashes = null; + switch (data.lineCap) { + case SWT.CAP_ROUND: cap_style = OS.CapRound; break; + case SWT.CAP_FLAT: cap_style = OS.CapButt; break; + case SWT.CAP_SQUARE: cap_style = OS.CapProjecting; break; + } + switch (data.lineJoin) { + case SWT.JOIN_ROUND: join_style = OS.JoinRound; break; + case SWT.JOIN_MITER: join_style = OS.JoinMiter; break; + case SWT.JOIN_BEVEL: join_style = OS.JoinBevel; break; + } + switch (data.lineStyle) { + case SWT.LINE_SOLID: break; + case SWT.LINE_DASH: dashes = width != 0 ? LINE_DASH : LINE_DASH_ZERO; break; + case SWT.LINE_DOT: dashes = width != 0 ? LINE_DOT : LINE_DOT_ZERO; break; + case SWT.LINE_DASHDOT: dashes = width != 0 ? LINE_DASHDOT : LINE_DASHDOT_ZERO; break; + case SWT.LINE_DASHDOTDOT: dashes = width != 0 ? LINE_DASHDOTDOT : LINE_DASHDOTDOT_ZERO; break; + case SWT.LINE_CUSTOM: dashes = data.lineDashes; break; + } + if (dashes != null) { + if ((state & LINE_STYLE) != 0) { + byte[] dash_list = new byte[dashes.length]; + for (int i = 0; i < dash_list.length; i++) { + dash_list[i] = (byte)(width == 0 || data.lineStyle == SWT.LINE_CUSTOM ? dashes[i] : dashes[i] * width); + } + OS.XSetDashes(xDisplay, handle, 0, dash_list, dash_list.length); + } + line_style = OS.LineOnOffDash; + } else { + line_style = OS.LineSolid; + } + OS.XSetLineAttributes(xDisplay, handle, width, line_style, cap_style, join_style); + } +} +int convertRgn(int rgn, double[] matrix) { + int /*long*/ newRgn = OS.XCreateRegion(); + //TODO - get rectangles from region instead of clip box + XRectangle rect = new XRectangle(); + OS.XClipBox(rgn, rect); + short[] pointArray = new short[8]; + double[] x = new double[1], y = new double[1]; + x[0] = rect.x; + y[0] = rect.y; + Cairo.cairo_matrix_transform_point(matrix, x, y); + pointArray[0] = (short)x[0]; + pointArray[1] = (short)y[0]; + x[0] = rect.x + rect.width; + y[0] = rect.y; + Cairo.cairo_matrix_transform_point(matrix, x, y); + pointArray[2] = (short)Math.round(x[0]); + pointArray[3] = (short)y[0]; + x[0] = rect.x + rect.width; + y[0] = rect.y + rect.height; + Cairo.cairo_matrix_transform_point(matrix, x, y); + pointArray[4] = (short)Math.round(x[0]); + pointArray[5] = (short)Math.round(y[0]); + x[0] = rect.x; + y[0] = rect.y + rect.height; + Cairo.cairo_matrix_transform_point(matrix, x, y); + pointArray[6] = (short)x[0]; + pointArray[7] = (short)Math.round(y[0]); + int /*long*/ polyRgn = OS.XPolygonRegion(pointArray, pointArray.length / 2, OS.EvenOddRule); + OS.XUnionRegion(newRgn, polyRgn, newRgn); + OS.XDestroyRegion(polyRgn); + return newRgn; +} +/** + * Copies a rectangular area of the receiver at the source + * position onto the receiver at the destination position. + * + * @param srcX the x coordinate in the receiver of the area to be copied + * @param srcY the y coordinate in the receiver of the area to be copied + * @param width the width of the area to copy + * @param height the height of the area to copy + * @param destX the x coordinate in the receiver of the area to copy to + * @param destY the y coordinate in the receiver of the area to copy to + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void copyArea(int x, int y, int width, int height, int destX, int destY) { + copyArea(x, y, width, height, destX, destY, true); +} +/** + * Copies a rectangular area of the receiver at the source + * position onto the receiver at the destination position. + * + * @param srcX the x coordinate in the receiver of the area to be copied + * @param srcY the y coordinate in the receiver of the area to be copied + * @param width the width of the area to copy + * @param height the height of the area to copy + * @param destX the x coordinate in the receiver of the area to copy to + * @param destY the y coordinate in the receiver of the area to copy to + * @param paint if <code>true</code> paint events will be generated for old and obscured areas + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @since 3.1 + */ +public void copyArea(int x, int y, int width, int height, int destX, int destY, boolean paint) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (width <= 0 || height <= 0) return; + int deltaX = destX - x, deltaY = destY - y; + if (deltaX == 0 && deltaY == 0) return; + int xDisplay = data.display; + int xDrawable = data.drawable; + if (data.backgroundImage != null && paint) { + OS.XClearArea (xDisplay, xDrawable, x, y, width, height, true); + OS.XClearArea (xDisplay, xDrawable, destX, destY, width, height, true); + return; + } + if (data.image == null && paint) OS.XSetGraphicsExposures (xDisplay, handle, true); + OS.XCopyArea(xDisplay, xDrawable, xDrawable, handle, x, y, width, height, destX, destY); + if (data.image == null && paint) { + OS.XSetGraphicsExposures (xDisplay, handle, false); + boolean disjoint = (destX + width < x) || (x + width < destX) || (destY + height < y) || (y + height < destY); + if (disjoint) { + OS.XClearArea (xDisplay, xDrawable, x, y, width, height, true); + } else { + if (deltaX != 0) { + int newX = destX - deltaX; + if (deltaX < 0) newX = destX + width; + OS.XClearArea (xDisplay, xDrawable, newX, y, Math.abs (deltaX), height, true); + } + if (deltaY != 0) { + int newY = destY - deltaY; + if (deltaY < 0) newY = destY + height; + OS.XClearArea (xDisplay, xDrawable, x, newY, width, Math.abs (deltaY), true); + } + } + } +} +/** + * Copies a rectangular area of the receiver at the specified + * position into the image, which must be of type <code>SWT.BITMAP</code>. + * + * @param image the image to copy into + * @param x the x coordinate in the receiver of the area to be copied + * @param y the y coordinate in the receiver of the area to be copied + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the image is null</li> + * <li>ERROR_INVALID_ARGUMENT - if the image is not a bitmap or has been disposed</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void copyArea(Image image, int x, int y) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (image == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + if (image.type != SWT.BITMAP || image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); + Rectangle rect = image.getBounds(); + int xDisplay = data.display; + int xGC = OS.XCreateGC(xDisplay, image.pixmap, 0, null); + if (xGC == 0) SWT.error(SWT.ERROR_NO_HANDLES); + OS.XSetSubwindowMode (xDisplay, xGC, OS.IncludeInferiors); + OS.XCopyArea(xDisplay, data.drawable, image.pixmap, xGC, x, y, rect.width, rect.height, 0, 0); + OS.XFreeGC(xDisplay, xGC); +} +void destroy() { + int /*long*/ cairo = data.cairo; + if (cairo != 0) Cairo.cairo_destroy(cairo); + data.cairo = 0; + + /* Free resources */ + int clipRgn = data.clipRgn; + if (clipRgn != 0) OS.XDestroyRegion(clipRgn); + Image image = data.image; + if (image != null) { + image.memGC = null; + if (image.transparentPixel != -1) image.createMask(); + } + + int renderTable = data.renderTable; + if (renderTable != 0) OS.XmRenderTableFree(renderTable); + int xmString = data.xmString; + if (xmString != 0) OS.XmStringFree (xmString); + int xmText = data.xmText; + if (xmText != 0) OS.XmStringFree (xmText); + int xmMnemonic = data.xmMnemonic; + if (xmMnemonic != 0) OS.XmStringFree (xmMnemonic); + + /* Dispose the GC */ + if (drawable != null) drawable.internal_dispose_GC(handle, data); + + data.display = data.drawable = data.colormap = + data.clipRgn = data.renderTable = data.xmString = data.xmText = + data.xmMnemonic = 0; + data.font = null; + drawable = null; + handle = 0; + data.image = null; + data = null; +} +/** + * Draws the outline of a circular or elliptical arc + * within the specified rectangular area. + * <p> + * The resulting arc begins at <code>startAngle</code> and extends + * for <code>arcAngle</code> degrees, using the current color. + * Angles are interpreted such that 0 degrees is at the 3 o'clock + * position. A positive value indicates a counter-clockwise rotation + * while a negative value indicates a clockwise rotation. + * </p><p> + * The center of the arc is the center of the rectangle whose origin + * is (<code>x</code>, <code>y</code>) and whose size is specified by the + * <code>width</code> and <code>height</code> arguments. + * </p><p> + * The resulting arc covers an area <code>width + 1</code> pixels wide + * by <code>height + 1</code> pixels tall. + * </p> + * + * @param x the x coordinate of the upper-left corner of the arc to be drawn + * @param y the y coordinate of the upper-left corner of the arc to be drawn + * @param width the width of the arc to be drawn + * @param height the height of the arc to be drawn + * @param startAngle the beginning angle + * @param arcAngle the angular extent of the arc, relative to the start angle + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void drawArc(int x, int y, int width, int height, int startAngle, int arcAngle) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + checkGC(DRAW); + if (width < 0) { + x = x + width; + width = -width; + } + if (height < 0) { + y = y + height; + height = -height; + } + if (width == 0 || height == 0 || arcAngle == 0) return; + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset; + if (width == height) { + if (arcAngle >= 0) { + Cairo.cairo_arc_negative(cairo, x + xOffset + width / 2f, y + yOffset + height / 2f, width / 2f, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); + } else { + Cairo.cairo_arc(cairo, x + xOffset + width / 2f, y + yOffset + height / 2f, width / 2f, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); + } + } else { + Cairo.cairo_save(cairo); + Cairo.cairo_translate(cairo, x + xOffset + width / 2f, y + yOffset + height / 2f); + Cairo.cairo_scale(cairo, width / 2f, height / 2f); + if (arcAngle >= 0) { + Cairo.cairo_arc_negative(cairo, 0, 0, 1, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); + } else { + Cairo.cairo_arc(cairo, 0, 0, 1, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); + } + Cairo.cairo_restore(cairo); + } + Cairo.cairo_stroke(cairo); + return; + } + OS.XDrawArc(data.display, data.drawable, handle, x, y, width, height, startAngle * 64, arcAngle * 64); +} +/** + * Draws a rectangle, based on the specified arguments, which has + * the appearance of the platform's <em>focus rectangle</em> if the + * platform supports such a notion, and otherwise draws a simple + * rectangle in the receiver's foreground color. + * + * @param x the x coordinate of the rectangle + * @param y the y coordinate of the rectangle + * @param width the width of the rectangle + * @param height the height of the rectangle + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see #drawRectangle(int, int, int, int) + */ +public void drawFocus (int x, int y, int width, int height) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + /* + * When the drawable is not a widget, the highlight + * color is zero. + */ + int xDisplay = data.display; + int xDrawable = data.drawable; + int highlightColor = 0; + int widget = OS.XtWindowToWidget (xDisplay, xDrawable); + if (widget != 0) { + int [] argList = {OS.XmNhighlightColor, 0}; + OS.XtGetValues (widget, argList, argList.length / 2); + highlightColor = argList [1]; + } + + /* Draw the focus rectangle */ + if (width < 0) { + x = x + width; + width = -width; + } + if (height < 0) { + y = y + height; + height = -height; + } + int cairo = data.cairo; + if (cairo != 0) { + int lineWidth = 1; + Cairo.cairo_save(cairo); + Cairo.cairo_set_line_width(cairo, lineWidth); + XColor color = new XColor(); + color.pixel = highlightColor; + OS.XQueryColor (data.display, data.colormap, color); + Cairo.cairo_set_source_rgba(cairo, (color.red & 0xFFFF) / (float)0xFFFF, (color.green & 0xFFFF) / (float)0xFFFF, (color.blue & 0xFFFF) / (float)0xFFFF, 1); + Cairo.cairo_rectangle(cairo, x + lineWidth / 2f, y + lineWidth / 2f, width, height); + Cairo.cairo_stroke(cairo); + Cairo.cairo_restore(cairo); + return; + } + OS.XSetForeground (xDisplay, handle, highlightColor); + OS.XDrawRectangle (xDisplay, xDrawable, handle, x, y, width - 1, height - 1); + data.state &= ~(BACKGROUND | FOREGROUND); +} +/** + * Draws the given image in the receiver at the specified + * coordinates. + * + * @param image the image to draw + * @param x the x coordinate of where to draw + * @param y the y coordinate of where to draw + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the image is null</li> + * <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li> + * <li>ERROR_INVALID_ARGUMENT - if the given coordinates are outside the bounds of the image</li> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * @exception SWTError <ul> + * <li>ERROR_NO_HANDLES - if no handles are available to perform the operation</li> + * </ul> + */ +public void drawImage(Image image, int x, int y) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (image == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + if (image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); + drawImage(image, 0, 0, -1, -1, x, y, -1, -1, true); +} + +/** + * Copies a rectangular area from the source image into a (potentially + * different sized) rectangular area in the receiver. If the source + * and destination areas are of differing sizes, then the source + * area will be stretched or shrunk to fit the destination area + * as it is copied. The copy fails if any part of the source rectangle + * lies outside the bounds of the source image, or if any of the width + * or height arguments are negative. + * + * @param image the source image + * @param srcX the x coordinate in the source image to copy from + * @param srcY the y coordinate in the source image to copy from + * @param srcWidth the width in pixels to copy from the source + * @param srcHeight the height in pixels to copy from the source + * @param destX the x coordinate in the destination to copy to + * @param destY the y coordinate in the destination to copy to + * @param destWidth the width in pixels of the destination rectangle + * @param destHeight the height in pixels of the destination rectangle + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the image is null</li> + * <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li> + * <li>ERROR_INVALID_ARGUMENT - if any of the width or height arguments are negative. + * <li>ERROR_INVALID_ARGUMENT - if the source rectangle is not contained within the bounds of the source image</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * @exception SWTError <ul> + * <li>ERROR_NO_HANDLES - if no handles are available to perform the operation</li> + * </ul> + */ +public void drawImage(Image image, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (srcWidth == 0 || srcHeight == 0 || destWidth == 0 || destHeight == 0) return; + if (srcX < 0 || srcY < 0 || srcWidth < 0 || srcHeight < 0 || destWidth < 0 || destHeight < 0) { + SWT.error (SWT.ERROR_INVALID_ARGUMENT); + } + if (image == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + if (image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); + drawImage(image, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, false); +} +void drawImage(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple) { + int[] width = new int[1]; + int[] height = new int[1]; + int[] depth = new int[1]; + int[] unused = new int[1]; + OS.XGetGeometry(data.display, srcImage.pixmap, unused, unused, unused, width, height, unused, depth); + int imgWidth = width[0]; + int imgHeight = height[0]; + if (simple) { + srcWidth = destWidth = imgWidth; + srcHeight = destHeight = imgHeight; + } else { + simple = srcX == 0 && srcY == 0 && + srcWidth == destWidth && destWidth == imgWidth && + srcHeight == destHeight && destHeight == imgHeight; + if (srcX + srcWidth > imgWidth || srcY + srcHeight > imgHeight) { + SWT.error(SWT.ERROR_INVALID_ARGUMENT); + } + } + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + if (data.alpha != 0) { + srcImage.createSurface(); + Cairo.cairo_save(cairo); + Cairo.cairo_rectangle(cairo, destX , destY, destWidth, destHeight); + Cairo.cairo_clip(cairo); + Cairo.cairo_translate(cairo, destX - srcX, destY - srcY); + if (srcWidth != destWidth || srcHeight != destHeight) { + Cairo.cairo_scale(cairo, destWidth / (float)srcWidth, destHeight / (float)srcHeight); + } + int filter = Cairo.CAIRO_FILTER_GOOD; + switch (data.interpolation) { + case SWT.DEFAULT: filter = Cairo.CAIRO_FILTER_GOOD; break; + case SWT.NONE: filter = Cairo.CAIRO_FILTER_NEAREST; break; + case SWT.LOW: filter = Cairo.CAIRO_FILTER_FAST; break; + case SWT.HIGH: filter = Cairo.CAIRO_FILTER_BEST; break; + } + int /*long*/ pattern = Cairo.cairo_pattern_create_for_surface(srcImage.surface); + if (pattern == 0) SWT.error(SWT.ERROR_NO_HANDLES); + if (srcWidth != destWidth || srcHeight != destHeight) { + /* + * Bug in Cairo. When drawing the image streched with an interpolation + * alghorithm, the edges of the image are faded. This is not a bug, but + * it is not desired. To avoid the faded edges, it should be possible to + * use cairo_pattern_set_extend() to set the pattern extend to either + * CAIRO_EXTEND_REFLECT or CAIRO_EXTEND_PAD, but these are not implemented + * in some versions of cairo (1.2.x) and have bugs in others (in 1.4.2 it + * draws with black edges). The fix is to implement CAIRO_EXTEND_REFLECT + * by creating an image that is 3 times bigger than the original, drawing + * the original image in every quadrant (with an appropriate transform) and + * use this image as the pattern. + * + * NOTE: For some reaons, it is necessary to use CAIRO_EXTEND_PAD with + * the image that was created or the edges are still faded. + */ + if (Cairo.cairo_version () >= Cairo.CAIRO_VERSION_ENCODE(1, 4, 2)) { + int /*long*/ surface = Cairo.cairo_image_surface_create(Cairo.CAIRO_FORMAT_ARGB32, imgWidth * 3, imgHeight * 3); + int /*long*/ cr = Cairo.cairo_create(surface); + Cairo.cairo_set_source_surface(cr, srcImage.surface, imgWidth, imgHeight); + Cairo.cairo_paint(cr); + Cairo.cairo_scale(cr, -1, -1); + Cairo.cairo_set_source_surface(cr, srcImage.surface, -imgWidth, -imgHeight); + Cairo.cairo_paint(cr); + Cairo.cairo_set_source_surface(cr, srcImage.surface, -imgWidth * 3, -imgHeight); + Cairo.cairo_paint(cr); + Cairo.cairo_set_source_surface(cr, srcImage.surface, -imgWidth, -imgHeight * 3); + Cairo.cairo_paint(cr); + Cairo.cairo_set_source_surface(cr, srcImage.surface, -imgWidth * 3, -imgHeight * 3); + Cairo.cairo_paint(cr); + Cairo.cairo_scale(cr, 1, -1); + Cairo.cairo_set_source_surface(cr, srcImage.surface, -imgWidth, imgHeight); + Cairo.cairo_paint(cr); + Cairo.cairo_set_source_surface(cr, srcImage.surface, -imgWidth * 3, imgHeight); + Cairo.cairo_paint(cr); + Cairo.cairo_scale(cr, -1, -1); + Cairo.cairo_set_source_surface(cr, srcImage.surface, imgWidth, -imgHeight); + Cairo.cairo_paint(cr); + Cairo.cairo_set_source_surface(cr, srcImage.surface, imgWidth, -imgHeight * 3); + Cairo.cairo_paint(cr); + Cairo.cairo_destroy(cr); + int /*long*/ newPattern = Cairo.cairo_pattern_create_for_surface(surface); + Cairo.cairo_surface_destroy(surface); + if (newPattern == 0) SWT.error(SWT.ERROR_NO_HANDLES); + Cairo.cairo_pattern_destroy(pattern); + pattern = newPattern; + Cairo.cairo_pattern_set_extend(pattern, Cairo.CAIRO_EXTEND_PAD); + double[] matrix = new double[6]; + Cairo.cairo_matrix_init_translate(matrix, imgWidth, imgHeight); + Cairo.cairo_pattern_set_matrix(pattern, matrix); + } +// Cairo.cairo_pattern_set_extend(pattern, Cairo.CAIRO_EXTEND_REFLECT); + } + Cairo.cairo_pattern_set_filter(pattern, filter); + Cairo.cairo_set_source(cairo, pattern); + if (data.alpha != 0xFF) { + Cairo.cairo_paint_with_alpha(cairo, data.alpha / (float)0xFF); + } else { + Cairo.cairo_paint(cairo); + } + Cairo.cairo_restore(cairo); + Cairo.cairo_pattern_destroy(pattern); + } + return; + } + if (srcImage.alpha != -1 || srcImage.alphaData != null) { + drawImageAlpha(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight, depth[0]); + } else if (srcImage.transparentPixel != -1 || srcImage.mask != 0) { + drawImageMask(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight, depth[0]); + } else { + drawImage(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight, depth[0]); + } +} +void drawImageAlpha(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, int imgWidth, int imgHeight, int depth) { + /* Simple cases */ + if (srcImage.alpha == 0) return; + if (srcImage.alpha == 255) { + drawImage(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight, depth); + return; + } + if (device.useXRender) { + drawImageXRender(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight, srcImage.mask, OS.PictStandardA8); + return; + } + + /* Check the clipping */ + Rectangle rect = getClipping(); + rect = rect.intersection(new Rectangle(destX, destY, destWidth, destHeight)); + if (rect.isEmpty()) return; + + /* Optimization. Recalculate the src and dest rectangles so that + * only the clipping area is drawn. + */ + int sx1 = srcX + (((rect.x - destX) * srcWidth) / destWidth); + int sx2 = srcX + ((((rect.x + rect.width) - destX) * srcWidth) / destWidth); + int sy1 = srcY + (((rect.y - destY) * srcHeight) / destHeight); + int sy2 = srcY + ((((rect.y + rect.height) - destY) * srcHeight) / destHeight); + destX = rect.x; + destY = rect.y; + destWidth = rect.width; + destHeight = rect.height; + srcX = sx1; + srcY = sy1; + srcWidth = Math.max(1, sx2 - sx1); + srcHeight = Math.max(1, sy2 - sy1); + + int xDisplay = data.display; + int xDrawable = data.drawable; + int xDestImagePtr = 0, xSrcImagePtr = 0; + try { + /* Get the background pixels */ + xDestImagePtr = OS.XGetImage(xDisplay, xDrawable, destX, destY, destWidth, destHeight, OS.AllPlanes, OS.ZPixmap); + if (xDestImagePtr == 0) return; + XImage xDestImage = new XImage(); + OS.memmove(xDestImage, xDestImagePtr, XImage.sizeof); + byte[] destData = new byte[xDestImage.bytes_per_line * xDestImage.height]; + OS.memmove(destData, xDestImage.data, destData.length); + + /* Get the foreground pixels */ + xSrcImagePtr = OS.XGetImage(xDisplay, srcImage.pixmap, srcX, srcY, srcWidth, srcHeight, OS.AllPlanes, OS.ZPixmap); + if (xSrcImagePtr == 0) return; + XImage xSrcImage = new XImage(); + OS.memmove(xSrcImage, xSrcImagePtr, XImage.sizeof); + byte[] srcData = new byte[xSrcImage.bytes_per_line * xSrcImage.height]; + OS.memmove(srcData, xSrcImage.data, srcData.length); + + /* Compose the pixels */ + if (xSrcImage.depth <= 8) { + XColor[] xcolors = data.device.xcolors; + if (xcolors == null) SWT.error(SWT.ERROR_UNSUPPORTED_DEPTH); + byte[] reds = new byte[xcolors.length]; + byte[] greens = new byte[xcolors.length]; + byte[] blues = new byte[xcolors.length]; + for (int i = 0; i < xcolors.length; i++) { + XColor color = xcolors[i]; + if (color == null) continue; + reds[i] = (byte)((color.red >> 8) & 0xFF); + greens[i] = (byte)((color.green >> 8) & 0xFF); + blues[i] = (byte)((color.blue >> 8) & 0xFF); + } + ImageData.blit(ImageData.BLIT_ALPHA, + srcData, xSrcImage.bits_per_pixel, xSrcImage.bytes_per_line, xSrcImage.byte_order, 0, 0, srcWidth, srcHeight, reds, greens, blues, + srcImage.alpha, srcImage.alphaData, imgWidth, srcX, srcY, + destData, xDestImage.bits_per_pixel, xDestImage.bytes_per_line, xDestImage.byte_order, 0, 0, destWidth, destHeight, reds, greens, blues, + false, false); + } else { + int srcRedMask = xSrcImage.red_mask; + int srcGreenMask = xSrcImage.green_mask; + int srcBlueMask = xSrcImage.blue_mask; + int destRedMask = xDestImage.red_mask; + int destGreenMask = xDestImage.green_mask; + int destBlueMask = xDestImage.blue_mask; + + /* + * Feature in X. XGetImage does not retrieve the RGB masks if the drawable + * is a Pixmap. The fix is to detect that the masks are not valid and use + * the default visual masks instead. + * + * NOTE: It is safe to use the default Visual masks, since we always + * create images with these masks. + */ + int visual = OS.XDefaultVisual(xDisplay, OS.XDefaultScreen(xDisplay)); + Visual xVisual = new Visual(); + OS.memmove(xVisual, visual, Visual.sizeof); + if (srcRedMask == 0 && srcGreenMask == 0 && srcBlueMask == 0) { + srcRedMask = xVisual.red_mask; + srcGreenMask = xVisual.green_mask; + srcBlueMask = xVisual.blue_mask; + } + if (destRedMask == 0 && destGreenMask == 0 && destBlueMask == 0) { + destRedMask = xVisual.red_mask; + destGreenMask = xVisual.green_mask; + destBlueMask = xVisual.blue_mask; + } + + ImageData.blit(ImageData.BLIT_ALPHA, + srcData, xSrcImage.bits_per_pixel, xSrcImage.bytes_per_line, xSrcImage.byte_order, 0, 0, srcWidth, srcHeight, srcRedMask, srcGreenMask, srcBlueMask, + srcImage.alpha, srcImage.alphaData, imgWidth, srcX, srcY, + destData, xDestImage.bits_per_pixel, xDestImage.bytes_per_line, xDestImage.byte_order, 0, 0, destWidth, destHeight, destRedMask, destGreenMask, destBlueMask, + false, false); + } + + /* Draw the composed pixels */ + OS.memmove(xDestImage.data, destData, destData.length); + OS.XPutImage(xDisplay, xDrawable, handle, xDestImagePtr, 0, 0, destX, destY, destWidth, destHeight); + } finally { + if (xSrcImagePtr != 0) OS.XDestroyImage(xSrcImagePtr); + if (xDestImagePtr != 0) OS.XDestroyImage(xDestImagePtr); + } +} +void drawImageMask(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, int imgWidth, int imgHeight, int depth) { + int xDisplay = data.display; + int xDrawable = data.drawable; + /* Generate the mask if necessary. */ + if (srcImage.transparentPixel != -1) srcImage.createMask(); + + if (device.useXRender) { + drawImageXRender(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight, srcImage.mask, OS.PictStandardA1); + } else { + int colorPixmap = 0, maskPixmap = 0; + int foreground = 0x00000000; + if (simple || (srcWidth == destWidth && srcHeight == destHeight)) { + colorPixmap = srcImage.pixmap; + maskPixmap = srcImage.mask; + } else { + /* Stretch the color and mask*/ + int xImagePtr = scalePixmap(xDisplay, srcImage.pixmap, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, false, false); + if (xImagePtr != 0) { + int xMaskPtr = scalePixmap(xDisplay, srcImage.mask, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, false, false); + if (xMaskPtr != 0) { + /* Create color scaled pixmaps */ + colorPixmap = OS.XCreatePixmap(xDisplay, xDrawable, destWidth, destHeight, depth); + int tempGC = OS.XCreateGC(xDisplay, colorPixmap, 0, null); + OS.XPutImage(xDisplay, colorPixmap, tempGC, xImagePtr, 0, 0, 0, 0, destWidth, destHeight); + OS.XFreeGC(xDisplay, tempGC); + + /* Create mask scaled pixmaps */ + maskPixmap = OS.XCreatePixmap(xDisplay, xDrawable, destWidth, destHeight, 1); + tempGC = OS.XCreateGC(xDisplay, maskPixmap, 0, null); + OS.XPutImage(xDisplay, maskPixmap, tempGC, xMaskPtr, 0, 0, 0, 0, destWidth, destHeight); + OS.XFreeGC(xDisplay, tempGC); + + OS.XDestroyImage(xMaskPtr); + } + OS.XDestroyImage(xImagePtr); + } + + /* Change the source rectangle */ + srcX = srcY = 0; + srcWidth = destWidth; + srcHeight = destHeight; + + foreground = ~foreground; + } + + /* Do the blts */ + if (colorPixmap != 0 && maskPixmap != 0) { + XGCValues values = new XGCValues(); + OS.XGetGCValues(xDisplay, handle, OS.GCForeground | OS. GCBackground | OS.GCFunction, values); + OS.XSetFunction(xDisplay, handle, OS.GXxor); + OS.XCopyArea(xDisplay, colorPixmap, xDrawable, handle, srcX, srcY, srcWidth, srcHeight, destX, destY); + OS.XSetForeground(xDisplay, handle, foreground); + OS.XSetBackground(xDisplay, handle, ~foreground); + OS.XSetFunction(xDisplay, handle, OS.GXand); + OS.XCopyPlane(xDisplay, maskPixmap, xDrawable, handle, srcX, srcY, srcWidth, srcHeight, destX, destY, 1); + OS.XSetFunction(xDisplay, handle, OS.GXxor); + OS.XCopyArea(xDisplay, colorPixmap, xDrawable, handle, srcX, srcY, srcWidth, srcHeight, destX, destY); + OS.XSetForeground(xDisplay, handle, values.foreground); + OS.XSetBackground(xDisplay, handle, values.background); + OS.XSetFunction(xDisplay, handle, values.function); + } + + /* Destroy scaled pixmaps */ + if (colorPixmap != 0 && srcImage.pixmap != colorPixmap) OS.XFreePixmap(xDisplay, colorPixmap); + if (maskPixmap != 0 && srcImage.mask != maskPixmap) OS.XFreePixmap(xDisplay, maskPixmap); + } + + /* Destroy the image mask if the there is a GC created on the image */ + if (srcImage.transparentPixel != -1 && srcImage.memGC != null) srcImage.destroyMask(); +} +void drawImageXRender(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, int imgWidth, int imgHeight, int maskPixmap, int maskType) { + int drawable = data.drawable; + int xDisplay = data.display; + int maskPict = 0; + if (maskPixmap != 0) { + int attribCount = 0; + XRenderPictureAttributes attrib = null; + if (srcImage.alpha != -1) { + attribCount = 1; + attrib = new XRenderPictureAttributes(); + attrib.repeat = true; + } + maskPict = OS.XRenderCreatePicture(xDisplay, maskPixmap, OS.XRenderFindStandardFormat(xDisplay, maskType), attribCount, attrib); + if (maskPict == 0) SWT.error(SWT.ERROR_NO_HANDLES); + } + int format = OS.XRenderFindVisualFormat(xDisplay, OS.XDefaultVisual(xDisplay, OS.XDefaultScreen(xDisplay))); + int destPict = OS.XRenderCreatePicture(xDisplay, drawable, format, 0, null); + if (destPict == 0) SWT.error(SWT.ERROR_NO_HANDLES); + int srcPict = OS.XRenderCreatePicture(xDisplay, srcImage.pixmap, format, 0, null); + if (srcPict == 0) SWT.error(SWT.ERROR_NO_HANDLES); + if (srcWidth != destWidth || srcHeight != destHeight) { + int[] transform = new int[]{(int)(((float)srcWidth / destWidth) * 65536), 0, 0, 0, (int)(((float)srcHeight / destHeight) * 65536), 0, 0, 0, 65536}; + OS.XRenderSetPictureTransform(xDisplay, srcPict, transform); + if (maskPict != 0) OS.XRenderSetPictureTransform(xDisplay, maskPict, transform); + srcX *= destWidth / (float)srcWidth; + srcY *= destHeight / (float)srcHeight; + } + int clipping = data.clipRgn; + if (data.damageRgn != 0) { + if (clipping == 0) { + clipping = data.damageRgn; + } else { + clipping = OS.XCreateRegion (); + OS.XUnionRegion(clipping, data.clipRgn, clipping); + OS.XIntersectRegion(clipping, data.damageRgn, clipping); + } + } + if (clipping != 0) { + OS.XRenderSetPictureClipRegion(xDisplay, destPict, clipping); + if (clipping != data.clipRgn && clipping != data.damageRgn) { + OS.XDestroyRegion(clipping); + } + } + OS.XRenderComposite(xDisplay, maskPict != 0 ? OS.PictOpOver : OS.PictOpSrc, srcPict, maskPict, destPict, srcX, srcY, srcX, srcY, destX, destY, destWidth, destHeight); + OS.XRenderFreePicture(xDisplay, destPict); + OS.XRenderFreePicture(xDisplay, srcPict); + if (maskPict != 0) OS.XRenderFreePicture(xDisplay, maskPict); +} +void drawImage(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple, int imgWidth, int imgHeight, int depth) { + int xDisplay = data.display; + int xDrawable = data.drawable; + /* Simple case: no stretching */ + if ((srcWidth == destWidth) && (srcHeight == destHeight)) { + OS.XCopyArea(xDisplay, srcImage.pixmap, xDrawable, handle, srcX, srcY, srcWidth, srcHeight, destX, destY); + return; + } + if (device.useXRender) { + drawImageXRender(srcImage, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, simple, imgWidth, imgHeight, 0, -1); + return; + } + + /* Streching case */ + int xImagePtr = scalePixmap(xDisplay, srcImage.pixmap, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, false, false); + if (xImagePtr != 0) { + OS.XPutImage(xDisplay, xDrawable, handle, xImagePtr, 0, 0, destX, destY, destWidth, destHeight); + OS.XDestroyImage(xImagePtr); + } +} +static int scalePixmap(int display, int pixmap, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean flipX, boolean flipY) { + int xSrcImagePtr = OS.XGetImage(display, pixmap, srcX, srcY, srcWidth, srcHeight, OS.AllPlanes, OS.ZPixmap); + if (xSrcImagePtr == 0) return 0; + XImage xSrcImage = new XImage(); + OS.memmove(xSrcImage, xSrcImagePtr, XImage.sizeof); + byte[] srcData = new byte[xSrcImage.bytes_per_line * xSrcImage.height]; + OS.memmove(srcData, xSrcImage.data, srcData.length); + OS.XDestroyImage(xSrcImagePtr); + int xImagePtr = 0; + int visual = OS.XDefaultVisual(display, OS.XDefaultScreen(display)); + switch (xSrcImage.bits_per_pixel) { + case 1: + case 4: + case 8: { + int format = xSrcImage.bits_per_pixel == 1 ? OS.XYBitmap : OS.ZPixmap; + xImagePtr = OS.XCreateImage(display, visual, xSrcImage.depth, format, 0, 0, destWidth, destHeight, xSrcImage.bitmap_pad, 0); + if (xImagePtr == 0) return 0; + XImage xImage = new XImage(); + OS.memmove(xImage, xImagePtr, XImage.sizeof); + int bufSize = xImage.bytes_per_line * xImage.height; + if (bufSize < 0) { + OS.XDestroyImage(xImagePtr); + return 0; + } + int bufPtr = OS.XtMalloc(bufSize); + xImage.data = bufPtr; + OS.memmove(xImagePtr, xImage, XImage.sizeof); + byte[] buf = new byte[bufSize]; + int srcOrder = xSrcImage.bits_per_pixel == 1 ? xSrcImage.bitmap_bit_order : xSrcImage.byte_order; + int destOrder = xImage.bits_per_pixel == 1 ? xImage.bitmap_bit_order : xImage.byte_order; + ImageData.blit(ImageData.BLIT_SRC, + srcData, xSrcImage.bits_per_pixel, xSrcImage.bytes_per_line, srcOrder, 0, 0, srcWidth, srcHeight, null, null, null, + ImageData.ALPHA_OPAQUE, null, 0, 0, 0, + buf, xImage.bits_per_pixel, xImage.bytes_per_line, destOrder, 0, 0, destWidth, destHeight, null, null, null, + flipX, flipY); + OS.memmove(bufPtr, buf, bufSize); + break; + } + case 16: + case 24: + case 32: { + xImagePtr = OS.XCreateImage(display, visual, xSrcImage.depth, OS.ZPixmap, 0, 0, destWidth, destHeight, xSrcImage.bitmap_pad, 0); + if (xImagePtr == 0) return 0; + XImage xImage = new XImage(); + OS.memmove(xImage, xImagePtr, XImage.sizeof); + int bufSize = xImage.bytes_per_line * xImage.height; + if (bufSize < 0) { + OS.XDestroyImage(xImagePtr); + return 0; + } + int bufPtr = OS.XtMalloc(bufSize); + xImage.data = bufPtr; + OS.memmove(xImagePtr, xImage, XImage.sizeof); + byte[] buf = new byte[bufSize]; + ImageData.blit(ImageData.BLIT_SRC, + srcData, xSrcImage.bits_per_pixel, xSrcImage.bytes_per_line, xSrcImage.byte_order, 0, 0, srcWidth, srcHeight, 0, 0, 0, + ImageData.ALPHA_OPAQUE, null, 0, 0, 0, + buf, xImage.bits_per_pixel, xImage.bytes_per_line, xImage.byte_order, 0, 0, destWidth, destHeight, 0, 0, 0, + flipX, flipY); + OS.memmove(bufPtr, buf, bufSize); + break; + } + } + return xImagePtr; +} +/** + * Draws a line, using the foreground color, between the points + * (<code>x1</code>, <code>y1</code>) and (<code>x2</code>, <code>y2</code>). + * + * @param x1 the first point's x coordinate + * @param y1 the first point's y coordinate + * @param x2 the second point's x coordinate + * @param y2 the second point's y coordinate + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void drawLine (int x1, int y1, int x2, int y2) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + checkGC(DRAW); + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset; + Cairo.cairo_move_to(cairo, x1 + xOffset, y1 + yOffset); + Cairo.cairo_line_to(cairo, x2 + xOffset, y2 + yOffset); + Cairo.cairo_stroke(cairo); + return; + } + OS.XDrawLine (data.display, data.drawable, handle, x1, y1, x2, y2); +} +/** + * Draws the outline of an oval, using the foreground color, + * within the specified rectangular area. + * <p> + * The result is a circle or ellipse that fits within the + * rectangle specified by the <code>x</code>, <code>y</code>, + * <code>width</code>, and <code>height</code> arguments. + * </p><p> + * The oval covers an area that is <code>width + 1</code> + * pixels wide and <code>height + 1</code> pixels tall. + * </p> + * + * @param x the x coordinate of the upper left corner of the oval to be drawn + * @param y the y coordinate of the upper left corner of the oval to be drawn + * @param width the width of the oval to be drawn + * @param height the height of the oval to be drawn + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void drawOval(int x, int y, int width, int height) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + checkGC(DRAW); + if (width < 0) { + x = x + width; + width = -width; + } + if (height < 0) { + y = y + height; + height = -height; + } + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset; + if (width == height) { + Cairo.cairo_arc_negative(cairo, x + xOffset + width / 2f, y + yOffset + height / 2f, width / 2f, 0, -2 * (float)Compatibility.PI); + } else { + Cairo.cairo_save(cairo); + Cairo.cairo_translate(cairo, x + xOffset + width / 2f, y + yOffset + height / 2f); + Cairo.cairo_scale(cairo, width / 2f, height / 2f); + Cairo.cairo_arc_negative(cairo, 0, 0, 1, 0, -2 * (float)Compatibility.PI); + Cairo.cairo_restore(cairo); + } + Cairo.cairo_stroke(cairo); + return; + } + OS.XDrawArc(data.display, data.drawable, handle, x, y, width, height, 0, 23040); +} +/** + * Draws the path described by the parameter. + * <p> + * This operation requires the operating system's advanced + * graphics subsystem which may not be available on some + * platforms. + * </p> + * + * @param path the path to draw + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the parameter is null</li> + * <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> + * </ul> + * + * @see Path + * + * @since 3.1 + */ +public void drawPath(Path path) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (path == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + if (path.handle == 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); + initCairo(); + checkGC(DRAW); + int /*long*/ cairo = data.cairo; + Cairo.cairo_save(cairo); + double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset; + Cairo.cairo_translate(cairo, xOffset, yOffset); + int /*long*/ copy = Cairo.cairo_copy_path(path.handle); + if (copy == 0) SWT.error(SWT.ERROR_NO_HANDLES); + Cairo.cairo_append_path(cairo, copy); + Cairo.cairo_path_destroy(copy); + Cairo.cairo_stroke(cairo); + Cairo.cairo_restore(cairo); +} +/** + * Draws a pixel, using the foreground color, at the specified + * point (<code>x</code>, <code>y</code>). + * <p> + * Note that the receiver's line attributes do not affect this + * operation. + * </p> + * + * @param x the point's x coordinate + * @param y the point's y coordinate + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @since 3.0 + */ +public void drawPoint (int x, int y) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + checkGC(DRAW); + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + Cairo.cairo_rectangle(cairo, x, y, 1, 1); + Cairo.cairo_fill(cairo); + return; + } + OS.XDrawPoint(data.display, data.drawable, handle, x, y); +} +/** + * Draws the closed polygon which is defined by the specified array + * of integer coordinates, using the receiver's foreground color. The array + * contains alternating x and y values which are considered to represent + * points which are the vertices of the polygon. Lines are drawn between + * each consecutive pair, and between the first pair and last pair in the + * array. + * + * @param pointArray an array of alternating x and y values which are the vertices of the polygon + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT if pointArray is null</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void drawPolygon(int[] pointArray) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + checkGC(DRAW); + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + drawPolyline(cairo, pointArray, true); + Cairo.cairo_stroke(cairo); + return; + } + + // Motif does not have a native drawPolygon() call. Instead we ensure + // that the first and last points are the same and call drawPolyline(). + + int length = pointArray.length; + + // Need at least 3 points to define the polygon. If 2 or fewer points + // passed in, it is either a line or point so just call drawPolyline(). + // Check what happens when XOR is implemented. We may not be able to + // do this optimization. + + if (length < 4) { + drawPolyline(pointArray); + return; + } + + // If first and last points are the same, the polygon is already closed. + // Just call drawPolyline(). + // + // Check what happens when XOR is implemented. We may not be able to + // do this optimization. + + if (pointArray[0] == pointArray[length - 2] && (pointArray[1] == pointArray[length - 1])) { + drawPolyline(pointArray); + return; + } + + // Grow the list of points by one element and make sure the first and last + // points are the same. This will close the polygon and we can use the + // drawPolyline() call. + + int newPoints[] = new int[length + 2]; + for (int i = 0; i < length ; i++) + newPoints[i] = pointArray[i]; + newPoints[length] = pointArray[0]; + newPoints[length + 1] = pointArray[1]; + + drawPolyline(newPoints); +} +/** + * Draws the polyline which is defined by the specified array + * of integer coordinates, using the receiver's foreground color. The array + * contains alternating x and y values which are considered to represent + * points which are the corners of the polyline. Lines are drawn between + * each consecutive pair, but not between the first pair and last pair in + * the array. + * + * @param pointArray an array of alternating x and y values which are the corners of the polyline + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the point array is null</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void drawPolyline(int[] pointArray) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + checkGC(DRAW); + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + drawPolyline(cairo, pointArray, false); + Cairo.cairo_stroke(cairo); + return; + } + short[] xPoints = new short[pointArray.length]; + for (int i = 0; i<pointArray.length;i++) { + xPoints[i] = (short) pointArray[i]; + } + OS.XDrawLines(data.display,data.drawable,handle,xPoints,xPoints.length / 2, OS.CoordModeOrigin); +} +void drawPolyline(int /*long*/ cairo, int[] pointArray, boolean close) { + int count = pointArray.length / 2; + if (count == 0) return; + double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset; + Cairo.cairo_move_to(cairo, pointArray[0] + xOffset, pointArray[1] + yOffset); + for (int i = 1, j=2; i < count; i++, j += 2) { + Cairo.cairo_line_to(cairo, pointArray[j] + xOffset, pointArray[j + 1] + yOffset); + } + if (close) Cairo.cairo_close_path(cairo); +} +/** + * Draws the outline of the rectangle specified by the arguments, + * using the receiver's foreground color. The left and right edges + * of the rectangle are at <code>x</code> and <code>x + width</code>. + * The top and bottom edges are at <code>y</code> and <code>y + height</code>. + * + * @param x the x coordinate of the rectangle to be drawn + * @param y the y coordinate of the rectangle to be drawn + * @param width the width of the rectangle to be drawn + * @param height the height of the rectangle to be drawn + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void drawRectangle (int x, int y, int width, int height) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + checkGC(DRAW); + if (width < 0) { + x = x + width; + width = -width; + } + if (height < 0) { + y = y + height; + height = -height; + } + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset; + Cairo.cairo_rectangle(cairo, x + xOffset, y + yOffset, width, height); + Cairo.cairo_stroke(cairo); + return; + } + OS.XDrawRectangle (data.display, data.drawable, handle, x, y, width, height); +} +/** + * Draws the outline of the specified rectangle, using the receiver's + * foreground color. The left and right edges of the rectangle are at + * <code>rect.x</code> and <code>rect.x + rect.width</code>. The top + * and bottom edges are at <code>rect.y</code> and + * <code>rect.y + rect.height</code>. + * + * @param rect the rectangle to draw + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the rectangle is null</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void drawRectangle (Rectangle rect) { + if (rect == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + drawRectangle (rect.x, rect.y, rect.width, rect.height); +} +/** + * Draws the outline of the round-cornered rectangle specified by + * the arguments, using the receiver's foreground color. The left and + * right edges of the rectangle are at <code>x</code> and <code>x + width</code>. + * The top and bottom edges are at <code>y</code> and <code>y + height</code>. + * The <em>roundness</em> of the corners is specified by the + * <code>arcWidth</code> and <code>arcHeight</code> arguments, which + * are respectively the width and height of the ellipse used to draw + * the corners. + * + * @param x the x coordinate of the rectangle to be drawn + * @param y the y coordinate of the rectangle to be drawn + * @param width the width of the rectangle to be drawn + * @param height the height of the rectangle to be drawn + * @param arcWidth the width of the arc + * @param arcHeight the height of the arc + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void drawRoundRectangle (int x, int y, int width, int height, int arcWidth, int arcHeight) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + checkGC(DRAW); + int nx = x; + int ny = y; + int nw = width; + int nh = height; + int naw = arcWidth; + int nah = arcHeight; + if (nw < 0) { + nw = 0 - nw; + nx = nx - nw; + } + if (nh < 0) { + nh = 0 - nh; + ny = ny - nh; + } + if (naw < 0) naw = 0 - naw; + if (nah < 0) nah = 0 - nah; + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + double xOffset = data.cairoXoffset, yOffset = data.cairoYoffset; + if (naw == 0 || nah == 0) { + Cairo.cairo_rectangle(cairo, x + xOffset, y + yOffset, width, height); + } else { + float naw2 = naw / 2f; + float nah2 = nah / 2f; + float fw = nw / naw2; + float fh = nh / nah2; + Cairo.cairo_save(cairo); + Cairo.cairo_translate(cairo, nx + xOffset, ny + yOffset); + Cairo.cairo_scale(cairo, naw2, nah2); + Cairo.cairo_move_to(cairo, fw - 1, 0); + Cairo.cairo_arc(cairo, fw - 1, 1, 1, Compatibility.PI + Compatibility.PI/2.0, Compatibility.PI*2.0); + Cairo.cairo_arc(cairo, fw - 1, fh - 1, 1, 0, Compatibility.PI/2.0); + Cairo.cairo_arc(cairo, 1, fh - 1, 1, Compatibility.PI/2, Compatibility.PI); + Cairo.cairo_arc(cairo, 1, 1, 1, Compatibility.PI, 270.0*Compatibility.PI/180.0); + Cairo.cairo_close_path(cairo); + Cairo.cairo_restore(cairo); + } + Cairo.cairo_stroke(cairo); + return; + } + int naw2 = naw / 2; + int nah2 = nah / 2; + int xDisplay = data.display; + int xDrawable = data.drawable; + if (nw > naw) { + if (nh > nah) { + OS.XDrawArc(xDisplay, xDrawable, handle, nx, ny, naw, nah, 5760, 5760); + OS.XDrawLine(xDisplay, xDrawable, handle, nx + naw2, ny, nx + nw - naw2, ny); + OS.XDrawArc(xDisplay, xDrawable, handle, nx + nw - naw, ny, naw, nah, 0, 5760); + OS.XDrawLine(xDisplay, xDrawable, handle, nx + nw, ny + nah2, nx + nw, ny + nh - nah2); + OS.XDrawArc(xDisplay, xDrawable, handle, nx + nw - naw, ny + nh - nah, naw, nah, 17280, 5760); + OS.XDrawLine(xDisplay,xDrawable,handle, nx + naw2, ny + nh, nx + nw - naw2, ny + nh); + OS.XDrawArc(xDisplay, xDrawable, handle, nx, ny + nh - nah, naw, nah, 11520, 5760); + OS.XDrawLine(xDisplay, xDrawable, handle, nx, ny + nah2, nx, ny + nh - nah2); + } else { + OS.XDrawArc(xDisplay, xDrawable, handle, nx, ny, naw, nh, 5760, 11520); + OS.XDrawLine(xDisplay, xDrawable, handle, nx + naw2, ny, nx + nw - naw2, ny); + OS.XDrawArc(xDisplay, xDrawable, handle, nx + nw - naw, ny, naw, nh, 17280, 11520); + OS.XDrawLine(xDisplay,xDrawable,handle, nx + naw2, ny + nh, nx + nw - naw2, ny + nh); + } + } else { + if (nh > nah) { + OS.XDrawArc(xDisplay, xDrawable, handle, nx, ny, nw, nah, 0, 11520); + OS.XDrawLine(xDisplay, xDrawable, handle, nx + nw, ny + nah2, nx + nw, ny + nh - nah2); + OS.XDrawArc(xDisplay, xDrawable, handle, nx, ny + nh - nah, nw, nah, 11520, 11520); + OS.XDrawLine(xDisplay,xDrawable,handle, nx, ny + nah2, nx, ny + nh - nah2); + } else { + OS.XDrawArc(xDisplay, xDrawable, handle, nx, ny, nw, nh, 0, 23040); + } + } +} +/** + * Draws the given string, using the receiver's current font and + * foreground color. No tab expansion or carriage return processing + * will be performed. The background of the rectangular area where + * the string is being drawn will be filled with the receiver's + * background color. + * + * @param string the string to be drawn + * @param x the x coordinate of the top left corner of the rectangular area where the string is to be drawn + * @param y the y coordinate of the top left corner of the rectangular area where the string is to be drawn + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the string is null</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void drawString (String string, int x, int y) { + drawString(string, x, y, false); +} +/** + * Draws the given string, using the receiver's current font and + * foreground color. No tab expansion or carriage return processing + * will be performed. If <code>isTransparent</code> is <code>true</code>, + * then the background of the rectangular area where the string is being + * drawn will not be modified, otherwise it will be filled with the + * receiver's background color. + * + * @param string the string to be drawn + * @param x the x coordinate of the top left corner of the rectangular area where the string is to be drawn + * @param y the y coordinate of the top left corner of the rectangular area where the string is to be drawn + * @param isTransparent if <code>true</code> the background will be transparent, otherwise it will be opaque + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the string is null</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void drawString (String string, int x, int y, boolean isTransparent) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + if (string.length() == 0) return; + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + //TODO - honor isTransparent + checkGC(FOREGROUND | FONT); + cairo_font_extents_t extents = new cairo_font_extents_t(); + Cairo.cairo_font_extents(cairo, extents); + double baseline = y + extents.ascent; + Cairo.cairo_move_to(cairo, x, baseline); + byte[] buffer = Converter.wcsToMbcs(null, string, true); + Cairo.cairo_show_text(cairo, buffer); + Cairo.cairo_new_path(cairo); + return; + } + setString(string); + checkGC(FOREGROUND | FONT | BACKGROUND_BG); + if (isTransparent) { + OS.XmStringDraw (data.display, data.drawable, data.font.handle, data.xmString, handle, x, y, 0x7FFFFFFF, OS.XmALIGNMENT_BEGINNING, 0, null); + } else { + OS.XmStringDrawImage (data.display, data.drawable, data.font.handle, data.xmString, handle, x, y, 0x7FFFFFFF, OS.XmALIGNMENT_BEGINNING, 0, null); + } +} +void createRenderTable() { + int fontList = data.font.handle; + /* Get the width of the tabs */ + byte[] buffer = {(byte)' ', 0}; + int xmString = OS.XmStringCreate(buffer, OS.XmFONTLIST_DEFAULT_TAG); + int tabWidth = OS.XmStringWidth(fontList, xmString) * 8; + OS.XmStringFree(xmString); + + /* Create the tab list */ + int [] tabs = new int[16]; + int tab = OS.XmTabCreate(tabWidth, (byte) OS.XmPIXELS, (byte) OS.XmRELATIVE, (byte) OS.XmALIGNMENT_BEGINNING, null); + for (int i = 0; i < tabs.length; i++) tabs[i] = tab; + int tabList = OS.XmTabListInsertTabs(0, tabs, tabs.length, 0); + + /* Create a font context to iterate over the elements in the font list */ + int[] fontBuffer = new int[1]; + if (!OS.XmFontListInitFontContext(fontBuffer, fontList)) { + SWT.error(SWT.ERROR_NO_HANDLES); + } + int context = fontBuffer[0], fontListEntry = 0; + int[] renditions = new int[4]; int renditionCount = 0; + + /* Create a rendition for each entry in the font list */ + while ((fontListEntry = OS.XmFontListNextEntry(context)) != 0) { + int fontPtr = OS.XmFontListEntryGetFont(fontListEntry, fontBuffer); + int fontType = (fontBuffer [0] == 0) ? OS.XmFONT_IS_FONT : OS.XmFONT_IS_FONTSET; + if (fontPtr == 0) SWT.error(SWT.ERROR_NO_HANDLES); + int [] argList = { + OS.XmNtabList, tabList, + OS.XmNfont, fontPtr, + OS.XmNfontType, fontType, + }; + int rendition = OS.XmRenditionCreate(data.device.shellHandle, OS.XmFONTLIST_DEFAULT_TAG, argList, argList.length / 2); + renditions[renditionCount++] = rendition; + if (renditionCount == renditions.length) { + int[] newArray = new int[renditions.length + 4]; + System.arraycopy(newArray, 0, renditions, 0, renditionCount); + renditions = newArray; + } + } + OS.XmFontListFreeFontContext(context); + OS.XmTabFree(tab); + OS.XmTabListFree(tabList); + + /* Create the render table from the renditions */ + data.renderTable = OS.XmRenderTableAddRenditions(0, renditions, renditionCount, OS.XmMERGE_REPLACE); + for (int i = 0; i < renditionCount; i++) OS.XmRenditionFree(renditions[i]); +} +/** + * Draws the given string, using the receiver's current font and + * foreground color. Tab expansion and carriage return processing + * are performed. The background of the rectangular area where + * the text is being drawn will be filled with the receiver's + * background color. + * + * @param string the string to be drawn + * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn + * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the string is null</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void drawText (String string, int x, int y) { + drawText(string, x, y, SWT.DRAW_DELIMITER | SWT.DRAW_TAB); +} +/** + * Draws the given string, using the receiver's current font and + * foreground color. Tab expansion and carriage return processing + * are performed. If <code>isTransparent</code> is <code>true</code>, + * then the background of the rectangular area where the text is being + * drawn will not be modified, otherwise it will be filled with the + * receiver's background color. + * + * @param string the string to be drawn + * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn + * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn + * @param isTransparent if <code>true</code> the background will be transparent, otherwise it will be opaque + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the string is null</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void drawText (String string, int x, int y, boolean isTransparent) { + int flags = SWT.DRAW_DELIMITER | SWT.DRAW_TAB; + if (isTransparent) flags |= SWT.DRAW_TRANSPARENT; + drawText(string, x, y, flags); +} +/** + * Draws the given string, using the receiver's current font and + * foreground color. Tab expansion, line delimiter and mnemonic + * processing are performed according to the specified flags. If + * <code>flags</code> includes <code>DRAW_TRANSPARENT</code>, + * then the background of the rectangular area where the text is being + * drawn will not be modified, otherwise it will be filled with the + * receiver's background color. + * <p> + * The parameter <code>flags</code> may be a combination of: + * <dl> + * <dt><b>DRAW_DELIMITER</b></dt> + * <dd>draw multiple lines</dd> + * <dt><b>DRAW_TAB</b></dt> + * <dd>expand tabs</dd> + * <dt><b>DRAW_MNEMONIC</b></dt> + * <dd>underline the mnemonic character</dd> + * <dt><b>DRAW_TRANSPARENT</b></dt> + * <dd>transparent background</dd> + * </dl> + * </p> + * + * @param string the string to be drawn + * @param x the x coordinate of the top left corner of the rectangular area where the text is to be drawn + * @param y the y coordinate of the top left corner of the rectangular area where the text is to be drawn + * @param flags the flags specifying how to process the text + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the string is null</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void drawText (String string, int x, int y, int flags) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + if (string.length() == 0) return; + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + //TODO - honor flags + checkGC(FOREGROUND | FONT); + cairo_font_extents_t extents = new cairo_font_extents_t(); + Cairo.cairo_font_extents(cairo, extents); + double baseline = y + extents.ascent; + Cairo.cairo_move_to(cairo, x, baseline); + byte[] buffer = Converter.wcsToMbcs(null, string, true); + Cairo.cairo_show_text(cairo, buffer); + Cairo.cairo_new_path(cairo); + return; + } + setText(string, flags); + checkGC(FOREGROUND | FONT | BACKGROUND_BG); + int xDisplay = data.display; + int xDrawable = data.drawable; + if (data.image != null) OS.XtRegisterDrawable (xDisplay, xDrawable, data.device.shellHandle); + int xmMnemonic = data.xmMnemonic; + if (xmMnemonic != 0) { + OS.XmStringDrawUnderline(xDisplay, xDrawable, data.renderTable, data.xmText, handle, x, y, 0x7FFFFFFF, OS.XmALIGNMENT_BEGINNING, 0, null, xmMnemonic); + } else { + if ((flags & SWT.DRAW_TRANSPARENT) != 0) { + OS.XmStringDraw(xDisplay, xDrawable, data.renderTable, data.xmText, handle, x, y, 0x7FFFFFFF, OS.XmALIGNMENT_BEGINNING, 0, null); + } else { + OS.XmStringDrawImage(xDisplay, xDrawable, data.renderTable, data.xmText, handle, x, y, 0x7FFFFFFF, OS.XmALIGNMENT_BEGINNING, 0, null); + } + } + if (data.image != null) OS.XtUnregisterDrawable (xDisplay, xDrawable); +} +/** + * Compares the argument to the receiver, and returns true + * if they represent the <em>same</em> object using a class + * specific comparison. + * + * @param object the object to compare with this object + * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise + * + * @see #hashCode + */ +public boolean equals (Object object) { + if (object == this) return true; + if (!(object instanceof GC)) return false; + return handle == ((GC)object).handle; +} +/** + * Fills the interior of a circular or elliptical arc within + * the specified rectangular area, with the receiver's background + * color. + * <p> + * The resulting arc begins at <code>startAngle</code> and extends + * for <code>arcAngle</code> degrees, using the current color. + * Angles are interpreted such that 0 degrees is at the 3 o'clock + * position. A positive value indicates a counter-clockwise rotation + * while a negative value indicates a clockwise rotation. + * </p><p> + * The center of the arc is the center of the rectangle whose origin + * is (<code>x</code>, <code>y</code>) and whose size is specified by the + * <code>width</code> and <code>height</code> arguments. + * </p><p> + * The resulting arc covers an area <code>width + 1</code> pixels wide + * by <code>height + 1</code> pixels tall. + * </p> + * + * @param x the x coordinate of the upper-left corner of the arc to be filled + * @param y the y coordinate of the upper-left corner of the arc to be filled + * @param width the width of the arc to be filled + * @param height the height of the arc to be filled + * @param startAngle the beginning angle + * @param arcAngle the angular extent of the arc, relative to the start angle + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see #drawArc + */ +public void fillArc(int x, int y, int width, int height, int startAngle, int arcAngle) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + checkGC(FILL); + if (width < 0) { + x = x + width; + width = -width; + } + if (height < 0) { + y = y + height; + height = -height; + } + if (width == 0 || height == 0 || arcAngle == 0) return; + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + if (width == height) { + if (arcAngle >= 0) { + Cairo.cairo_arc_negative(cairo, x + width / 2f, y + height / 2f, width / 2f, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); + } else { + Cairo.cairo_arc(cairo, x + width / 2f, y + height / 2f, width / 2f, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); + } + Cairo.cairo_line_to(cairo, x + width / 2f, y + height / 2f); + } else { + Cairo.cairo_save(cairo); + Cairo.cairo_translate(cairo, x + width / 2f, y + height / 2f); + Cairo.cairo_scale(cairo, width / 2f, height / 2f); + if (arcAngle >= 0) { + Cairo.cairo_arc_negative(cairo, 0, 0, 1, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); + } else { + Cairo.cairo_arc(cairo, 0, 0, 1, -startAngle * (float)Compatibility.PI / 180, -(startAngle + arcAngle) * (float)Compatibility.PI / 180); + } + Cairo.cairo_line_to(cairo, 0, 0); + Cairo.cairo_restore(cairo); + } + Cairo.cairo_fill(cairo); + return; + } + OS.XFillArc(data.display, data.drawable, handle, x, y, width, height, startAngle * 64, arcAngle * 64); +} + +/** + * Fills the interior of the specified rectangle with a gradient + * sweeping from left to right or top to bottom progressing + * from the receiver's foreground color to its background color. + * + * @param x the x coordinate of the rectangle to be filled + * @param y the y coordinate of the rectangle to be filled + * @param width the width of the rectangle to be filled, may be negative + * (inverts direction of gradient if horizontal) + * @param height the height of the rectangle to be filled, may be negative + * (inverts direction of gradient if vertical) + * @param vertical if true sweeps from top to bottom, else + * sweeps from left to right + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see #drawRectangle(int, int, int, int) + */ +public void fillGradientRectangle(int x, int y, int width, int height, boolean vertical) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if ((width == 0) || (height == 0)) return; + + RGB backgroundRGB, foregroundRGB; + backgroundRGB = getBackground().getRGB(); + foregroundRGB = getForeground().getRGB(); + + RGB fromRGB, toRGB; + fromRGB = foregroundRGB; + toRGB = backgroundRGB; + boolean swapColors = false; + if (width < 0) { + x += width; width = -width; + if (! vertical) swapColors = true; + } + if (height < 0) { + y += height; height = -height; + if (vertical) swapColors = true; + } + if (swapColors) { + fromRGB = backgroundRGB; + toRGB = foregroundRGB; + } + if (fromRGB.equals(toRGB)) { + fillRectangle(x, y, width, height); + return; + } + /* X Window deals with a virtually limitless array of color formats + * but we only distinguish between paletted and direct modes + */ + int xDisplay = data.display; + int xScreenNum = OS.XDefaultScreen(xDisplay); + final int xScreen = OS.XDefaultScreenOfDisplay(xDisplay); + final int xVisual = OS.XDefaultVisual(xDisplay, xScreenNum); + Visual visual = new Visual(); + OS.memmove(visual, xVisual, Visual.sizeof); + final int depth = OS.XDefaultDepthOfScreen(xScreen); + final boolean directColor = (depth > 8); + + // This code is intentionally commented since elsewhere in SWT we + // assume that depth <= 8 means we are in a paletted mode though + // this is not always the case. + //final boolean directColor = (visual.c_class == OS.TrueColor) || (visual.c_class == OS.DirectColor); + + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + int /*long*/ pattern; + if (vertical) { + pattern = Cairo.cairo_pattern_create_linear (0.0, 0.0, 0.0, 1.0); + } else { + pattern = Cairo.cairo_pattern_create_linear (0.0, 0.0, 1.0, 0.0); + } + Cairo.cairo_pattern_add_color_stop_rgba (pattern, 0, fromRGB.red / 255f, fromRGB.green / 255f, fromRGB.blue / 255f, data.alpha / 255f); + Cairo.cairo_pattern_add_color_stop_rgba (pattern, 1, toRGB.red / 255f, toRGB.green / 255f, toRGB.blue / 255f, data.alpha / 255f); + Cairo.cairo_save(cairo); + Cairo.cairo_translate(cairo, x, y); + Cairo.cairo_scale(cairo, width, height); + Cairo.cairo_rectangle(cairo, 0, 0, 1, 1); + Cairo.cairo_set_source(cairo, pattern); + Cairo.cairo_fill(cairo); + Cairo.cairo_restore(cairo); + Cairo.cairo_pattern_destroy(pattern); + return; + } + final int redBits, greenBits, blueBits; + if (directColor) { + // RGB mapped display + redBits = getChannelWidth(visual.red_mask); + greenBits = getChannelWidth(visual.green_mask); + blueBits = getChannelWidth(visual.blue_mask); + } else { + // Index display + redBits = greenBits = blueBits = 0; + } + ImageData.fillGradientRectangle(this, data.device, + x, y, width, height, vertical, fromRGB, toRGB, + redBits, greenBits, blueBits); +} + +/** + * Computes the required channel width (depth) from a mask. + */ +static int getChannelWidth(int mask) { + int width = 0; + while (mask != 0) { + width += (mask & 1); + mask >>>= 1; + } + return width; +} + +/** + * Fills the interior of an oval, within the specified + * rectangular area, with the receiver's background + * color. + * + * @param x the x coordinate of the upper left corner of the oval to be filled + * @param y the y coordinate of the upper left corner of the oval to be filled + * @param width the width of the oval to be filled + * @param height the height of the oval to be filled + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see #drawOval + */ +public void fillOval (int x, int y, int width, int height) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + checkGC(FILL); + if (width < 0) { + x = x + width; + width = -width; + } + if (height < 0) { + y = y + height; + height = -height; + } + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + if (width == height) { + Cairo.cairo_arc_negative(cairo, x + width / 2f, y + height / 2f, width / 2f, 0, 2 * (float)Compatibility.PI); + } else { + Cairo.cairo_save(cairo); + Cairo.cairo_translate(cairo, x + width / 2f, y + height / 2f); + Cairo.cairo_scale(cairo, width / 2f, height / 2f); + Cairo.cairo_arc_negative(cairo, 0, 0, 1, 0, 2 * (float)Compatibility.PI); + Cairo.cairo_restore(cairo); + } + Cairo.cairo_fill(cairo); + return; + } + OS.XFillArc (data.display, data.drawable, handle, x, y, width, height, 0, 23040); +} +/** + * Fills the path described by the parameter. + * <p> + * This operation requires the operating system's advanced + * graphics subsystem which may not be available on some + * platforms. + * </p> + * + * @param path the path to fill + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the parameter is null</li> + * <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> + * </ul> + * + * @see Path + * + * @since 3.1 + */ +public void fillPath (Path path) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (path == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + if (path.handle == 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); + initCairo(); + checkGC(FILL); + int /*long*/ cairo = data.cairo; + int /*long*/ copy = Cairo.cairo_copy_path(path.handle); + if (copy == 0) SWT.error(SWT.ERROR_NO_HANDLES); + Cairo.cairo_append_path(cairo, copy); + Cairo.cairo_path_destroy(copy); + Cairo.cairo_fill(cairo); +} +/** + * Fills the interior of the closed polygon which is defined by the + * specified array of integer coordinates, using the receiver's + * background color. The array contains alternating x and y values + * which are considered to represent points which are the vertices of + * the polygon. Lines are drawn between each consecutive pair, and + * between the first pair and last pair in the array. + * + * @param pointArray an array of alternating x and y values which are the vertices of the polygon + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT if pointArray is null</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see #drawPolygon + */ +public void fillPolygon(int[] pointArray) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + checkGC(FILL); + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + drawPolyline(cairo, pointArray, true); + Cairo.cairo_fill(cairo); + return; + } + short[] xPoints = new short[pointArray.length]; + for (int i = 0; i<pointArray.length;i++) { + xPoints[i] = (short) pointArray[i]; + } + OS.XFillPolygon(data.display, data.drawable, handle,xPoints, xPoints.length / 2, OS.Complex, OS.CoordModeOrigin); +} +/** + * Fills the interior of the rectangle specified by the arguments, + * using the receiver's background color. + * + * @param x the x coordinate of the rectangle to be filled + * @param y the y coordinate of the rectangle to be filled + * @param width the width of the rectangle to be filled + * @param height the height of the rectangle to be filled + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see #drawRectangle(int, int, int, int) + */ +public void fillRectangle (int x, int y, int width, int height) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + checkGC(FILL); + if (width < 0) { + x = x + width; + width = -width; + } + if (height < 0) { + y = y + height; + height = -height; + } + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + Cairo.cairo_rectangle(cairo, x, y, width, height); + Cairo.cairo_fill(cairo); + return; + } + OS.XFillRectangle (data.display, data.drawable, handle, x, y, width, height); +} +/** + * Fills the interior of the specified rectangle, using the receiver's + * background color. + * + * @param rect the rectangle to be filled + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the rectangle is null</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see #drawRectangle(int, int, int, int) + */ +public void fillRectangle (Rectangle rect) { + if (rect == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + fillRectangle(rect.x, rect.y, rect.width, rect.height); +} +/** + * Fills the interior of the round-cornered rectangle specified by + * the arguments, using the receiver's background color. + * + * @param x the x coordinate of the rectangle to be filled + * @param y the y coordinate of the rectangle to be filled + * @param width the width of the rectangle to be filled + * @param height the height of the rectangle to be filled + * @param arcWidth the width of the arc + * @param arcHeight the height of the arc + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see #drawRoundRectangle + */ +public void fillRoundRectangle (int x, int y, int width, int height, int arcWidth, int arcHeight) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + checkGC(FILL); + int nx = x; + int ny = y; + int nw = width; + int nh = height; + int naw = arcWidth; + int nah = arcHeight; + if (nw < 0) { + nw = 0 - nw; + nx = nx - nw; + } + if (nh < 0) { + nh = 0 - nh; + ny = ny -nh; + } + if (naw < 0) naw = 0 - naw; + if (nah < 0) nah = 0 - nah; + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + if (naw == 0 || nah == 0) { + Cairo.cairo_rectangle(cairo, x, y, width, height); + } else { + float naw2 = naw / 2f; + float nah2 = nah / 2f; + float fw = nw / naw2; + float fh = nh / nah2; + Cairo.cairo_save(cairo); + Cairo.cairo_translate(cairo, nx, ny); + Cairo.cairo_scale(cairo, naw2, nah2); + Cairo.cairo_move_to(cairo, fw - 1, 0); + Cairo.cairo_arc(cairo, fw - 1, 1, 1, Compatibility.PI + Compatibility.PI/2.0, Compatibility.PI*2.0); + Cairo.cairo_arc(cairo, fw - 1, fh - 1, 1, 0, Compatibility.PI/2.0); + Cairo.cairo_arc(cairo, 1, fh - 1, 1, Compatibility.PI/2, Compatibility.PI); + Cairo.cairo_arc(cairo, 1, 1, 1, Compatibility.PI, 270.0*Compatibility.PI/180.0); + Cairo.cairo_close_path(cairo); + Cairo.cairo_restore(cairo); + } + Cairo.cairo_fill(cairo); + return; + } + int naw2 = naw / 2; + int nah2 = nah / 2; + int xDisplay = data.display; + int xDrawable = data.drawable; + if (nw > naw) { + if (nh > nah) { + OS.XFillArc(xDisplay, xDrawable, handle, nx, ny, naw, nah, 5760, 5760); + OS.XFillRectangle(xDisplay, xDrawable, handle, nx + naw2, ny, nw - naw2 * 2, nah2); + OS.XFillArc(xDisplay, xDrawable, handle, nx + nw - naw, ny, naw, nah, 0, 5760); + OS.XFillRectangle(xDisplay, xDrawable, handle, nx, ny + nah2, nw, nh - nah2 * 2); + OS.XFillArc(xDisplay, xDrawable, handle, nx + nw - naw, ny + nh - nah, naw, nah, 17280, 5760); + OS.XFillRectangle(xDisplay, xDrawable, handle, nx + naw2, ny + nh - nah2, nw - naw2 * 2, nah2); + OS.XFillArc(xDisplay, xDrawable, handle, nx, ny + nh - nah, naw, nah, 11520, 5760); + } else { + OS.XFillArc(xDisplay, xDrawable, handle, nx, ny, naw, nh, 5760, 11520); + OS.XFillRectangle(xDisplay, xDrawable, handle, nx + naw2, ny, nw - naw2 * 2, nh); + OS.XFillArc(xDisplay, xDrawable, handle, nx + nw - naw, ny, naw, nh, 17280, 11520); + } + } else { + if (nh > nah) { + OS.XFillArc(xDisplay, xDrawable, handle, nx, ny, nw, nah, 0, 11520); + OS.XFillRectangle(xDisplay, xDrawable, handle, nx, ny + nah2, nw, nh - nah2 * 2); + OS.XFillArc(xDisplay, xDrawable, handle, nx, ny + nh - nah, nw, nah, 11520, 11520); + } else { + OS.XFillArc(xDisplay, xDrawable, handle, nx, ny, nw, nh, 0, 23040); + } + } +} +char fixMnemonic(char[] text) { + char mnemonic=0; + int i=0, j=0; + while (i < text.length) { + if ((text [j++] = text [i++]) == '&') { + if (i == text.length) {continue;} + if (text [i] == '&') {i++; continue;} + if (mnemonic == 0) mnemonic = text [i]; + j--; + } + } + while (j < text.length) text [j++] = 0; + return mnemonic; +} +/** + * Returns the <em>advance width</em> of the specified character in + * the font which is currently selected into the receiver. + * <p> + * The advance width is defined as the horizontal distance the cursor + * should move after printing the character in the selected font. + * </p> + * + * @param ch the character to measure + * @return the distance in the x direction to move past the character before painting the next + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public int getAdvanceWidth(char ch) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + checkGC(FONT); + int fontList = data.font.handle; + byte[] charBuffer = Converter.wcsToMbcs(getCodePage (), new char[] { ch }, false); + int val = charBuffer[0] & 0xFF; + /* Create a font context to iterate over each element in the font list */ + int[] buffer = new int[1]; + if (!OS.XmFontListInitFontContext(buffer, fontList)) { + SWT.error(SWT.ERROR_NO_HANDLES); + } + int context = buffer[0]; + XFontStruct fontStruct = new XFontStruct(); + XCharStruct charStruct = new XCharStruct(); + int fontListEntry; + int[] fontStructPtr = new int[1]; + int[] fontNamePtr = new int[1]; + /* Go through each entry in the font list. */ + while ((fontListEntry = OS.XmFontListNextEntry(context)) != 0) { + int fontPtr = OS.XmFontListEntryGetFont(fontListEntry, buffer); + if (buffer[0] == 0) { + OS.memmove(fontStruct, fontPtr, XFontStruct.sizeof); + /* FontList contains a single font */ + if (fontStruct.min_byte1 == 0 && fontStruct.max_byte1 == 0) { + /* Single byte fontStruct */ + if (fontStruct.min_char_or_byte2 <= val && val <= fontStruct.max_char_or_byte2) { + /* The font contains the character */ + int charWidth = 0; + int perCharPtr = fontStruct.per_char; + if (perCharPtr == 0) { + /* + * If perCharPtr is 0 then all glyphs in the font have + * the same width as the font's maximum width. + */ + charWidth = fontStruct.max_bounds_width; + } else { + OS.memmove(charStruct, perCharPtr + ((val - fontStruct.min_char_or_byte2) * XCharStruct.sizeof), XCharStruct.sizeof); + charWidth = charStruct.width; + } + if (charWidth != 0) { + OS.XmFontListFreeFontContext(context); + return charWidth; + } + } + } else { + /* Double byte fontStruct */ + int charsPerRow = fontStruct.max_char_or_byte2 - fontStruct.min_char_or_byte2 + 1; + int row = 0; + if (charBuffer.length > 1) row = charBuffer[1] - fontStruct.min_byte1; + int col = charBuffer[0] - fontStruct.min_char_or_byte2; + if (row <= fontStruct.max_byte1 && col <= fontStruct.max_char_or_byte2) { + /* The font contains the character */ + int charWidth = 0; + int perCharPtr = fontStruct.per_char; + if (perCharPtr == 0) { + /* + * If perCharPtr is 0 then all glyphs in the font have + * the same width as the font's maximum width. + */ + charWidth = fontStruct.max_bounds_width; + } else { + int offset = row * charsPerRow + col; + OS.memmove(charStruct, perCharPtr + offset * XCharStruct.sizeof, XCharStruct.sizeof); + charWidth = charStruct.width; + } + if (charWidth != 0) { + OS.XmFontListFreeFontContext(context); + return charWidth; + } + } + } + } else { + /* FontList contains a fontSet */ + int nFonts = OS.XFontsOfFontSet(fontPtr, fontStructPtr, fontNamePtr); + int [] fontStructs = new int[nFonts]; + OS.memmove(fontStructs, fontStructPtr[0], nFonts * 4); + /* Go through each fontStruct in the font set */ + for (int i = 0; i < nFonts; i++) { + OS.memmove(fontStruct, fontStructs[i], XFontStruct.sizeof); + if (fontStruct.min_byte1 == 0 && fontStruct.max_byte1 == 0) { + /* Single byte fontStruct */ + if (fontStruct.min_char_or_byte2 <= val && val <= fontStruct.max_char_or_byte2) { + /* The font contains the character */ + int charWidth = 0; + int perCharPtr = fontStruct.per_char; + if (perCharPtr == 0) { + /* + * If perCharPtr is 0 then all glyphs in the font have + * the same width as the font's maximum width. + */ + charWidth = fontStruct.max_bounds_width; + } else { + OS.memmove(charStruct, perCharPtr + ((val - fontStruct.min_char_or_byte2) * XCharStruct.sizeof), XCharStruct.sizeof); + charWidth = charStruct.width; + } + if (charWidth != 0) { + OS.XmFontListFreeFontContext(context); + return charWidth; + } + } + } else { + /* Double byte fontStruct */ + int charsPerRow = fontStruct.max_char_or_byte2 - fontStruct.min_char_or_byte2 + 1; + int row = 0; + if (charBuffer.length > 1) row = charBuffer[1] - fontStruct.min_byte1; + int col = charBuffer[0] - fontStruct.min_char_or_byte2; + if (row <= fontStruct.max_byte1 && col <= fontStruct.max_char_or_byte2) { + /* The font contains the character */ + int charWidth = 0; + int perCharPtr = fontStruct.per_char; + if (perCharPtr == 0) { + /* + * If perCharPtr is 0 then all glyphs in the font have + * the same width as the font's maximum width. + */ + charWidth = fontStruct.max_bounds_width; + } else { + int offset = row * charsPerRow + col; + OS.memmove(charStruct, perCharPtr + offset * XCharStruct.sizeof, XCharStruct.sizeof); + charWidth = charStruct.width; + } + if (charWidth != 0) { + OS.XmFontListFreeFontContext(context); + return charWidth; + } + } + } + } + } + } + OS.XmFontListFreeFontContext(context); + return stringExtent(new String(new char[]{ch})).x; +} +/** + * Returns <code>true</code> if receiver is using the operating system's + * advanced graphics subsystem. Otherwise, <code>false</code> is returned + * to indicate that normal graphics are in use. + * <p> + * Advanced graphics may not be installed for the operating system. In this + * case, <code>false</code> is always returned. Some operating system have + * only one graphics subsystem. If this subsystem supports advanced graphics, + * then <code>true</code> is always returned. If any graphics operation such + * as alpha, antialias, patterns, interpolation, paths, clipping or transformation + * has caused the receiver to switch from regular to advanced graphics mode, + * <code>true</code> is returned. If the receiver has been explicitly switched + * to advanced mode and this mode is supported, <code>true</code> is returned. + * </p> + * + * @return the advanced value + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see #setAdvanced + * + * @since 3.1 + */ +public boolean getAdvanced() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + return data.cairo != 0; +} +/** + * Returns the receiver's alpha value. The alpha value + * is between 0 (transparent) and 255 (opaque). + * + * @return the alpha value + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @since 3.1 + */ +public int getAlpha() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + return data.alpha; +} +/** + * Returns the receiver's anti-aliasing setting value, which will be + * one of <code>SWT.DEFAULT</code>, <code>SWT.OFF</code> or + * <code>SWT.ON</code>. Note that this controls anti-aliasing for all + * <em>non-text drawing</em> operations. + * + * @return the anti-aliasing setting + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see #getTextAntialias + * + * @since 3.1 + */ +public int getAntialias() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (data.cairo == 0) return SWT.DEFAULT; + int antialias = Cairo.cairo_get_antialias(data.cairo); + switch (antialias) { + case Cairo.CAIRO_ANTIALIAS_DEFAULT: return SWT.DEFAULT; + case Cairo.CAIRO_ANTIALIAS_NONE: return SWT.OFF; + case Cairo.CAIRO_ANTIALIAS_GRAY: + case Cairo.CAIRO_ANTIALIAS_SUBPIXEL: return SWT.ON; + } + return SWT.DEFAULT; +} +/** + * Returns the background color. + * + * @return the receiver's background color + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public Color getBackground() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + XColor color = data.background; + if ((data.state & BACKGROUND_RGB) == 0) { + OS.XQueryColor(data.display, data.colormap, color); + data.state |= BACKGROUND_RGB; + } + return Color.motif_new(data.device, color); +} +/** + * Returns the background pattern. The default value is + * <code>null</code>. + * + * @return the receiver's background pattern + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see Pattern + * + * @since 3.1 + */ +public Pattern getBackgroundPattern() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + return data.backgroundPattern; +} +/** + * Returns the width of the specified character in the font + * selected into the receiver. + * <p> + * The width is defined as the space taken up by the actual + * character, not including the leading and tailing whitespace + * or overhang. + * </p> + * + * @param ch the character to measure + * @return the width of the character + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public int getCharWidth(char ch) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + checkGC(FONT); + int fontList = data.font.handle; + byte[] charBuffer = Converter.wcsToMbcs(getCodePage (), new char[] { ch }, false); + int val = charBuffer[0] & 0xFF; + /* Create a font context to iterate over each element in the font list */ + int[] buffer = new int[1]; + if (!OS.XmFontListInitFontContext(buffer, fontList)) { + SWT.error(SWT.ERROR_NO_HANDLES); + } + int context = buffer[0]; + XFontStruct fontStruct = new XFontStruct(); + XCharStruct charStruct = new XCharStruct(); + int fontListEntry; + int[] fontStructPtr = new int[1]; + int[] fontNamePtr = new int[1]; + /* Go through each entry in the font list. */ + while ((fontListEntry = OS.XmFontListNextEntry(context)) != 0) { + int fontPtr = OS.XmFontListEntryGetFont(fontListEntry, buffer); + if (buffer[0] == 0) { + OS.memmove(fontStruct, fontPtr, XFontStruct.sizeof); + /* FontList contains a single font */ + if (fontStruct.min_byte1 == 0 && fontStruct.max_byte1 == 0) { + /* Single byte fontStruct */ + if (fontStruct.min_char_or_byte2 <= val && val <= fontStruct.max_char_or_byte2) { + /* The font contains the character */ + int charWidth = 0; + int lBearing = 0; + int rBearing = 0; + int perCharPtr = fontStruct.per_char; + if (perCharPtr == 0) { + /* + * If perCharPtr is 0 then all glyphs in the font have + * the same width and left/right bearings as the font. + */ + charWidth = fontStruct.max_bounds_width; + lBearing = fontStruct.min_bounds_lbearing; + rBearing = fontStruct.max_bounds_rbearing; + } else { + OS.memmove(charStruct, perCharPtr + ((val - fontStruct.min_char_or_byte2) * XCharStruct.sizeof), XCharStruct.sizeof); + charWidth = charStruct.width; + lBearing = charStruct.lbearing; + rBearing = charStruct.rbearing; + } + if (charWidth != 0) { + OS.XmFontListFreeFontContext(context); + return rBearing - lBearing; + } + } + } else { + /* Double byte fontStruct */ + int charsPerRow = fontStruct.max_char_or_byte2 - fontStruct.min_char_or_byte2 + 1; + int row = 0; + if (charBuffer.length > 1) row = charBuffer[1] - fontStruct.min_byte1; + int col = charBuffer[0] - fontStruct.min_char_or_byte2; + if (row <= fontStruct.max_byte1 && col <= fontStruct.max_char_or_byte2) { + /* The font contains the character */ + int charWidth = 0; + int lBearing = 0; + int rBearing = 0; + int perCharPtr = fontStruct.per_char; + if (perCharPtr == 0) { + /* + * If perCharPtr is 0 then all glyphs in the font have + * the same width and left/right bearings as the font. + */ + charWidth = fontStruct.max_bounds_width; + lBearing = fontStruct.min_bounds_lbearing; + rBearing = fontStruct.max_bounds_rbearing; + } else { + int offset = row * charsPerRow + col; + OS.memmove(charStruct, perCharPtr + offset * XCharStruct.sizeof, XCharStruct.sizeof); + charWidth = charStruct.width; + lBearing = charStruct.lbearing; + rBearing = charStruct.rbearing; + } + if (charWidth != 0) { + OS.XmFontListFreeFontContext(context); + return rBearing - lBearing; + } + } + } + } else { + /* FontList contains a fontSet */ + int nFonts = OS.XFontsOfFontSet(fontPtr, fontStructPtr, fontNamePtr); + int [] fontStructs = new int[nFonts]; + OS.memmove(fontStructs, fontStructPtr[0], nFonts * 4); + /* Go through each fontStruct in the font set */ + for (int i = 0; i < nFonts; i++) { + OS.memmove(fontStruct, fontStructs[i], XFontStruct.sizeof); + if (fontStruct.min_byte1 == 0 && fontStruct.max_byte1 == 0) { + /* Single byte fontStruct */ + if (fontStruct.min_char_or_byte2 <= val && val <= fontStruct.max_char_or_byte2) { + /* The font contains the character */ + int charWidth = 0; + int lBearing = 0; + int rBearing = 0; + int perCharPtr = fontStruct.per_char; + if (perCharPtr == 0) { + /* + * If perCharPtr is 0 then all glyphs in the font have + * the same width and left/right bearings as the font. + */ + charWidth = fontStruct.max_bounds_width; + lBearing = fontStruct.min_bounds_lbearing; + rBearing = fontStruct.max_bounds_rbearing; + } else { + OS.memmove(charStruct, perCharPtr + ((val - fontStruct.min_char_or_byte2) * XCharStruct.sizeof), XCharStruct.sizeof); + charWidth = charStruct.width; + lBearing = charStruct.lbearing; + rBearing = charStruct.rbearing; + } + if (charWidth != 0) { + OS.XmFontListFreeFontContext(context); + return rBearing - lBearing; + } + } + } else { + /* Double byte fontStruct */ + int charsPerRow = fontStruct.max_char_or_byte2 - fontStruct.min_char_or_byte2 + 1; + int row = 0; + if (charBuffer.length > 1) row = charBuffer[1] - fontStruct.min_byte1; + int col = charBuffer[0] - fontStruct.min_char_or_byte2; + if (row <= fontStruct.max_byte1 && col <= fontStruct.max_char_or_byte2) { + /* The font contains the character */ + int charWidth = 0; + int lBearing = 0; + int rBearing = 0; + int perCharPtr = fontStruct.per_char; + if (perCharPtr == 0) { + /* + * If perCharPtr is 0 then all glyphs in the font have + * the same width and left/right bearings as the font. + */ + charWidth = fontStruct.max_bounds_width; + lBearing = fontStruct.min_bounds_lbearing; + rBearing = fontStruct.max_bounds_rbearing; + } else { + int offset = row * charsPerRow + col; + OS.memmove(charStruct, perCharPtr + offset * XCharStruct.sizeof, XCharStruct.sizeof); + charWidth = charStruct.width; + lBearing = charStruct.lbearing; + rBearing = charStruct.rbearing; + } + if (charWidth != 0) { + OS.XmFontListFreeFontContext(context); + return rBearing - lBearing; + } + } + } + } + } + } + OS.XmFontListFreeFontContext(context); + return stringExtent(new String(new char[]{ch})).x; +} +/** + * Returns the bounding rectangle of the receiver's clipping + * region. If no clipping region is set, the return value + * will be a rectangle which covers the entire bounds of the + * object the receiver is drawing on. + * + * @return the bounding rectangle of the clipping region + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public Rectangle getClipping() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + /* Calculate visible bounds in device space */ + int x = 0, y = 0, width = 0, height = 0; + int[] w = new int[1], h = new int[1], unused = new int[1]; + OS.XGetGeometry(data.display, data.drawable, unused, unused, unused, w, h, unused, unused); + width = w[0]; + height = h[0]; + /* Intersect visible bounds with clipping in device space and then convert then to user space */ + int cairo = data.cairo; + int clipRgn = data.clipRgn; + int damageRgn = data.damageRgn; + if (clipRgn != 0 || damageRgn != 0 || cairo != 0) { + int rgn = OS.XCreateRegion (); + XRectangle rect = new XRectangle(); + rect.width = (short)width; + rect.height = (short)height; + OS.XUnionRectWithRegion(rect, rgn, rgn); + if (damageRgn != 0) { + OS.XIntersectRegion (damageRgn, rgn, rgn); + } + /* Intersect visible bounds with clipping */ + if (clipRgn != 0) { + /* Convert clipping to device space if needed */ + if (data.clippingTransform != null) { + clipRgn = convertRgn(clipRgn, data.clippingTransform); + OS.XIntersectRegion(rgn, clipRgn, rgn); + OS.XDestroyRegion(clipRgn); + } else { + OS.XIntersectRegion(rgn, clipRgn, rgn); + } + } + /* Convert to user space */ + if (cairo != 0) { + double[] matrix = new double[6]; + Cairo.cairo_get_matrix(cairo, matrix); + Cairo.cairo_matrix_invert(matrix); + clipRgn = convertRgn(rgn, matrix); + OS.XDestroyRegion(rgn); + rgn = clipRgn; + } + OS.XClipBox(rgn, rect); + OS.XDestroyRegion(rgn); + x = rect.x; + y = rect.y; + width = rect.width; + height = rect.height; + } + return new Rectangle(x, y, width, height); +} +/** + * Sets the region managed by the argument to the current + * clipping region of the receiver. + * + * @param region the region to fill with the clipping region + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the region is null</li> + * <li>ERROR_INVALID_ARGUMENT - if the region is disposed</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void getClipping(Region region) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (region == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + int clipping = region.handle; + OS.XSubtractRegion (clipping, clipping, clipping); + int /*long*/ cairo = data.cairo; + int clipRgn = data.clipRgn; + if (clipRgn == 0) { + int[] width = new int[1], height = new int[1], unused = new int[1]; + OS.XGetGeometry(data.display, data.drawable, unused, unused, unused, width, height, unused, unused); + XRectangle rect = new XRectangle(); + rect.x = 0; + rect.y = 0; + rect.width = (short)width[0]; + rect.height = (short)height[0]; + OS.XUnionRectWithRegion(rect, clipping, clipping); + } else { + /* Convert clipping to device space if needed */ + if (data.clippingTransform != null) { + int rgn = convertRgn(clipRgn, data.clippingTransform); + OS.XUnionRegion(clipping, rgn, clipping); + OS.XDestroyRegion(rgn); + } else { + OS.XUnionRegion(clipping, clipRgn, clipping); + } + } + if (data.damageRgn != 0) { + OS.XIntersectRegion(clipping, data.damageRgn, clipping); + } + /* Convert to user space */ + if (cairo != 0) { + double[] matrix = new double[6]; + Cairo.cairo_get_matrix(cairo, matrix); + Cairo.cairo_matrix_invert(matrix); + int rgn = convertRgn(clipping, matrix); + OS.XSubtractRegion(clipping, clipping, clipping); + OS.XUnionRegion(clipping, rgn, clipping); + OS.XDestroyRegion(rgn); + } +} +String getCodePage () { + return data.font.codePage; +} +/** + * Returns the receiver's fill rule, which will be one of + * <code>SWT.FILL_EVEN_ODD</code> or <code>SWT.FILL_WINDING</code>. + * + * @return the receiver's fill rule + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @since 3.1 + */ +public int getFillRule() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + XGCValues values = new XGCValues(); + OS.XGetGCValues(data.display, handle, OS.GCFillRule, values); + return values.fill_rule == OS.WindingRule ? SWT.FILL_WINDING : SWT.FILL_EVEN_ODD; +} +/** + * Returns the font currently being used by the receiver + * to draw and measure text. + * + * @return the receiver's font + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public Font getFont () { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + return Font.motif_new(data.device, data.font.handle); +} +int getFontHeight () { + int fontList = data.font.handle; + /* Create a font context to iterate over each element in the font list */ + int [] buffer = new int [1]; + if (!OS.XmFontListInitFontContext (buffer, fontList)) { + SWT.error(SWT.ERROR_NO_HANDLES); + } + int context = buffer [0]; + + /* Values discovering during iteration */ + int height = 0; + XFontStruct fontStruct = new XFontStruct (); + int fontListEntry; + int [] fontStructPtr = new int [1]; + int [] fontNamePtr = new int [1]; + + /* Go through each entry in the font list. */ + while ((fontListEntry = OS.XmFontListNextEntry (context)) != 0) { + int fontPtr = OS.XmFontListEntryGetFont (fontListEntry, buffer); + if (buffer [0] == 0) { + /* FontList contains a single font */ + OS.memmove (fontStruct, fontPtr, XFontStruct.sizeof); + int fontHeight = fontStruct.ascent + fontStruct.descent; + height = Math.max(height, fontHeight); + } else { + /* FontList contains a fontSet */ + int nFonts = OS.XFontsOfFontSet (fontPtr, fontStructPtr, fontNamePtr); + int [] fontStructs = new int [nFonts]; + OS.memmove (fontStructs, fontStructPtr [0], nFonts * 4); + + /* Go through each fontStruct in the font set */ + for (int i=0; i<nFonts; i++) { + OS.memmove (fontStruct, fontStructs[i], XFontStruct.sizeof); + int fontHeight = fontStruct.ascent + fontStruct.descent; + height = Math.max(height, fontHeight); + } + } + } + + OS.XmFontListFreeFontContext (context); + return height; +} +/** + * Returns a FontMetrics which contains information + * about the font currently being used by the receiver + * to draw and measure text. + * + * @return font metrics for the receiver's font + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public FontMetrics getFontMetrics() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + checkGC(FONT); + int xDisplay = data.display; + Font font = data.font; + int fontList = font.handle; + /* Create a font context to iterate over each element in the font list */ + int[] buffer = new int[1]; + if (!OS.XmFontListInitFontContext(buffer, fontList)) { + SWT.error(SWT.ERROR_NO_HANDLES); + } + int context = buffer[0]; + /* Values discovering during iteration */ + int ascent = 0; + int descent = 0; + int averageCharWidth = 0, numAverageCharWidth = 0; + int leading = 0; + int height = 0; + + XFontStruct fontStruct = new XFontStruct(); + int fontListEntry; + int[] fontStructPtr = new int[1]; + int[] fontNamePtr = new int[1]; + /* Go through each entry in the font list. */ + while ((fontListEntry = OS.XmFontListNextEntry(context)) != 0) { + int fontPtr = OS.XmFontListEntryGetFont(fontListEntry, buffer); + if (buffer[0] == 0) { + /* FontList contains a single font */ + OS.memmove(fontStruct, fontPtr, XFontStruct.sizeof); + ascent = Math.max(ascent, fontStruct.ascent); + descent = Math.max(descent, fontStruct.descent); + int fontHeight = fontStruct.ascent + fontStruct.descent; + height = Math.max(height, fontHeight); + /* Calculate average character width */ + int propPtr = fontStruct.properties; + for (int i = 0; i < fontStruct.n_properties; i++) { + /* Look through properties for XAFONT */ + int[] prop = new int[2]; + OS.memmove(prop, propPtr, 8); + if (prop[0] == OS.XA_FONT) { + /* Found it, prop[1] points to the string */ + int ptr = OS.XmGetAtomName(xDisplay, prop[1]); + int length = OS.strlen(ptr); + byte[] nameBuf = new byte[length]; + OS.memmove(nameBuf, ptr, length); + OS.XFree(ptr); + String xlfd = new String(Converter.mbcsToWcs(null, nameBuf)).toLowerCase(); + int avg = 0; + try { + avg = FontData.motif_new(xlfd).averageWidth / 10; + } catch (Exception e) { + // leave avg unchanged so that it will be computed below + } + if (avg == 0) { + /* + * Not all fonts have average character width encoded + * in the xlfd. This one doesn't, so do it the hard + * way by averaging all the character widths. + */ + int perCharPtr = fontStruct.per_char; + if (perCharPtr == 0) { + /* + * If perCharPtr is 0 then all glyphs in the font have + * the same width as the font's maximum width. So no + * averaging is required. + */ + averageCharWidth = fontStruct.max_bounds_width; + } else { + int sum = 0, count = 0; + int cols = fontStruct.max_char_or_byte2 - fontStruct.min_char_or_byte2 + 1; + XCharStruct struct = new XCharStruct(); + for (int index = 0; index < cols; index++) { + OS.memmove(struct, perCharPtr + (index * XCharStruct.sizeof), XCharStruct.sizeof); + int w = struct.width; + if (w != 0) { + sum += w; + count++; + } + } + averageCharWidth += sum / count; + } + } else { + /* Average character width was in the xlfd */ + averageCharWidth += avg; + } + numAverageCharWidth++; + break; + } + propPtr += 8; + } + } else { + /* FontList contains a fontSet */ + int nFonts = OS.XFontsOfFontSet(fontPtr, fontStructPtr, fontNamePtr); + int [] fontStructs = new int[nFonts]; + OS.memmove(fontStructs, fontStructPtr[0], nFonts * 4); + /* Go through each fontStruct in the font set */ + for (int i = 0; i < nFonts; i++) { + OS.memmove(fontStruct, fontStructs[i], XFontStruct.sizeof); + ascent = Math.max(ascent, fontStruct.ascent); + descent = Math.max(descent, fontStruct.descent); + int fontHeight = fontStruct.ascent + fontStruct.descent; + height = Math.max(height, fontHeight); + /* Calculate average character width */ + int propPtr = fontStruct.properties; + for (int j = 0; j < fontStruct.n_properties; j++) { + /* Look through properties for XAFONT */ + int[] prop = new int[2]; + OS.memmove(prop, propPtr, 8); + if (prop[0] == OS.XA_FONT) { + /* Found it, prop[1] points to the string */ + int ptr = OS.XmGetAtomName(xDisplay, prop[1]); + int length = OS.strlen(ptr); + byte[] nameBuf = new byte[length]; + OS.memmove(nameBuf, ptr, length); + OS.XFree(ptr); + String xlfd = new String(Converter.mbcsToWcs(null, nameBuf)).toLowerCase(); + int avg = 0; + try { + avg = FontData.motif_new(xlfd).averageWidth / 10; + } catch (Exception e) { + /* + * Some font servers, for example, xfstt, do not pass + * reasonable font properties to the client, so we + * cannot construct a FontData for these. Use the font + * name instead. + */ + int[] fontName = new int[1]; + OS.memmove(fontName, fontNamePtr [0] + (i * 4), 4); + ptr = fontName[0]; + if (ptr != 0 ) { + length = OS.strlen(ptr); + nameBuf = new byte[length]; + OS.memmove(nameBuf, ptr, length); + xlfd = new String(Converter.mbcsToWcs(null, nameBuf)).toLowerCase(); + try { + avg = FontData.motif_new(xlfd).averageWidth / 10; + } catch (Exception ex) { + // leave avg unchanged (0) so that it will be computed below + } + } + } + if (avg == 0) { + /* + * Not all fonts have average character width encoded + * in the xlfd. This one doesn't, so do it the hard + * way by averaging all the character widths. + */ + int perCharPtr = fontStruct.per_char; + if (perCharPtr == 0) { + /* + * If perCharPtr is 0 then all glyphs in the font have + * the same width as the font's maximum width. So no + * averaging is required. + */ + averageCharWidth = fontStruct.max_bounds_width; + } else { + int sum = 0, count = 0; + int cols = fontStruct.max_char_or_byte2 - fontStruct.min_char_or_byte2 + 1; + XCharStruct struct = new XCharStruct(); + for (int index = 0; index < cols; index++) { + OS.memmove(struct, perCharPtr + (index * XCharStruct.sizeof), XCharStruct.sizeof); + int w = struct.width; + if (w != 0) { + sum += w; + count++; + } + } + averageCharWidth += sum / count; + } + } else { + /* Average character width was in the xlfd */ + averageCharWidth += avg; + } + numAverageCharWidth++; + break; + } + propPtr += 8; + } + } + } + } + OS.XmFontListFreeFontContext(context); + return FontMetrics.motif_new(ascent, descent, averageCharWidth / numAverageCharWidth, leading, height); +} +/** + * Returns the receiver's foreground color. + * + * @return the color used for drawing foreground things + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public Color getForeground() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + XColor color = data.foreground; + if ((data.state & FOREGROUND_RGB) == 0) { + OS.XQueryColor(data.display, data.colormap, color); + data.state |= FOREGROUND_RGB; + } + return Color.motif_new(data.device, color); +} +/** + * Returns the foreground pattern. The default value is + * <code>null</code>. + * + * @return the receiver's foreground pattern + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see Pattern + * + * @since 3.1 + */ +public Pattern getForegroundPattern() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + return data.foregroundPattern; +} +/** + * Returns the GCData. + * <p> + * <b>IMPORTANT:</b> This method is <em>not</em> part of the public + * API for <code>GC</code>. It is marked public only so that it + * can be shared within the packages provided by SWT. It is not + * available on all platforms, and should never be called from + * application code. + * </p> + * + * @return the receiver's GCData + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see GCData + * + * @since 3.2 + * @noreference This method is not intended to be referenced by clients. + */ +public GCData getGCData() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + return data; +} +/** + * Returns the receiver's interpolation setting, which will be one of + * <code>SWT.DEFAULT</code>, <code>SWT.NONE</code>, + * <code>SWT.LOW</code> or <code>SWT.HIGH</code>. + * + * @return the receiver's interpolation setting + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @since 3.1 + */ +public int getInterpolation() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + return data.interpolation; +} +/** + * Returns the receiver's line attributes. + * + * @return the line attributes used for drawing lines + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @since 3.3 + */ +public LineAttributes getLineAttributes() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + float[] dashes = null; + if (data.lineDashes != null) { + dashes = new float[data.lineDashes.length]; + System.arraycopy(data.lineDashes, 0, dashes, 0, dashes.length); + } + return new LineAttributes(data.lineWidth, data.lineCap, data.lineJoin, data.lineStyle, dashes, data.lineDashesOffset, data.lineMiterLimit); +} +/** + * Returns the receiver's line cap style, which will be one + * of the constants <code>SWT.CAP_FLAT</code>, <code>SWT.CAP_ROUND</code>, + * or <code>SWT.CAP_SQUARE</code>. + * + * @return the cap style used for drawing lines + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @since 3.1 + */ +public int getLineCap() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + return data.lineCap; +} +/** + * Returns the receiver's line dash style. The default value is + * <code>null</code>. + * + * @return the line dash style used for drawing lines + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @since 3.1 + */ +public int[] getLineDash() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (data.lineDashes == null) return null; + int[] lineDashes = new int[data.lineDashes.length]; + for (int i = 0; i < lineDashes.length; i++) { + lineDashes[i] = (int)data.lineDashes[i]; + } + return lineDashes; +} +/** + * Returns the receiver's line join style, which will be one + * of the constants <code>SWT.JOIN_MITER</code>, <code>SWT.JOIN_ROUND</code>, + * or <code>SWT.JOIN_BEVEL</code>. + * + * @return the join style used for drawing lines + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @since 3.1 + */ +public int getLineJoin() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + return data.lineJoin; +} +/** + * Returns the receiver's line style, which will be one + * of the constants <code>SWT.LINE_SOLID</code>, <code>SWT.LINE_DASH</code>, + * <code>SWT.LINE_DOT</code>, <code>SWT.LINE_DASHDOT</code> or + * <code>SWT.LINE_DASHDOTDOT</code>. + * + * @return the style used for drawing lines + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public int getLineStyle() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + return data.lineStyle; +} +/** + * Returns the width that will be used when drawing lines + * for all of the figure drawing operations (that is, + * <code>drawLine</code>, <code>drawRectangle</code>, + * <code>drawPolyline</code>, and so forth. + * + * @return the receiver's line width + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public int getLineWidth() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + return (int)data.lineWidth; +} +/** + * Returns the receiver's style information. + * <p> + * Note that the value which is returned by this method <em>may + * not match</em> the value which was provided to the constructor + * when the receiver was created. This can occur when the underlying + * operating system does not support a particular combination of + * requested styles. + * </p> + * + * @return the style bits + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @since 2.1.2 + */ +public int getStyle () { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + return data.style; +} +/** + * Returns the receiver's text drawing anti-aliasing setting value, + * which will be one of <code>SWT.DEFAULT</code>, <code>SWT.OFF</code> or + * <code>SWT.ON</code>. Note that this controls anti-aliasing + * <em>only</em> for text drawing operations. + * + * @return the anti-aliasing setting + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see #getAntialias + * + * @since 3.1 + */ +public int getTextAntialias() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (data.cairo == 0) return SWT.DEFAULT; + int /*long*/ options = Cairo.cairo_font_options_create(); + Cairo.cairo_get_font_options(data.cairo, options); + int antialias = Cairo.cairo_font_options_get_antialias(options); + Cairo.cairo_font_options_destroy(options); + switch (antialias) { + case Cairo.CAIRO_ANTIALIAS_DEFAULT: return SWT.DEFAULT; + case Cairo.CAIRO_ANTIALIAS_NONE: return SWT.OFF; + case Cairo.CAIRO_ANTIALIAS_GRAY: + case Cairo.CAIRO_ANTIALIAS_SUBPIXEL: return SWT.ON; + } + return SWT.DEFAULT; +} +/** + * Sets the parameter to the transform that is currently being + * used by the receiver. + * + * @param transform the destination to copy the transform into + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the parameter is null</li> + * <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see Transform + * + * @since 3.1 + */ +public void getTransform(Transform transform) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (transform == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + if (transform.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + Cairo.cairo_get_matrix(cairo, transform.handle); + } else { + transform.setElements(1, 0, 0, 1, 0, 0); + } +} +/** + * Returns <code>true</code> if this GC is drawing in the mode + * where the resulting color in the destination is the + * <em>exclusive or</em> of the color values in the source + * and the destination, and <code>false</code> if it is + * drawing in the mode where the destination color is being + * replaced with the source color value. + * + * @return <code>true</code> true if the receiver is in XOR mode, and false otherwise + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public boolean getXORMode() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + XGCValues values = new XGCValues (); + OS.XGetGCValues (data.display, handle, OS.GCFunction, values); + return values.function == OS.GXxor; +} +/** + * Returns an integer hash code for the receiver. Any two + * objects that return <code>true</code> when passed to + * <code>equals</code> must return the same value for this + * method. + * + * @return the receiver's hash + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see #equals + */ +public int hashCode () { + return handle; +} +void init(Drawable drawable, GCData data, int xGC) { + if (data.foreground != null) data.state &= ~(FOREGROUND | FOREGROUND_RGB); + if (data.background != null) data.state &= ~(BACKGROUND | BACKGROUND_BG | BACKGROUND_RGB); + if (data.font != null) data.state &= ~FONT; + Image image = data.image; + if (image != null) { + image.memGC = this; + /* + * The transparent pixel mask might change when drawing on + * the image. Destroy it so that it is regenerated when + * necessary. + */ + if (image.transparentPixel != -1) image.destroyMask(); + } + this.drawable = drawable; + this.data = data; + handle = xGC; +} +void initCairo() { + data.device.checkCairo(); + int /*long*/ cairo = data.cairo; + if (cairo != 0) return; + int xDisplay = data.display; + int xDrawable = data.drawable; + int xVisual = OS.XDefaultVisual(xDisplay, OS.XDefaultScreen(xDisplay)); + int[] width = new int[1], height = new int[1], unused = new int[1]; + OS.XGetGeometry(xDisplay, xDrawable, unused, unused, unused, width, height, unused, unused); + int /*long*/ surface = Cairo.cairo_xlib_surface_create(xDisplay, xDrawable, xVisual, width[0], height[0]); + if (surface == 0) SWT.error(SWT.ERROR_NO_HANDLES); + data.cairo = cairo = Cairo.cairo_create(surface); + Cairo.cairo_surface_destroy(surface); + if (cairo == 0) SWT.error(SWT.ERROR_NO_HANDLES); + Cairo.cairo_set_fill_rule(cairo, Cairo.CAIRO_FILL_RULE_EVEN_ODD); + data.state &= ~(BACKGROUND | FOREGROUND | FONT | LINE_WIDTH | LINE_CAP | LINE_JOIN | LINE_STYLE | DRAW_OFFSET); + setCairoClip(data.damageRgn, data.clipRgn); +} +/** + * Returns <code>true</code> if the receiver has a clipping + * region set into it, and <code>false</code> otherwise. + * If this method returns false, the receiver will draw on all + * available space in the destination. If it returns true, + * it will draw only in the area that is covered by the region + * that can be accessed with <code>getClipping(region)</code>. + * + * @return <code>true</code> if the GC has a clipping region, and <code>false</code> otherwise + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public boolean isClipped() { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + return data.clipRgn != 0; +} +/** + * Returns <code>true</code> if the GC has been disposed, + * and <code>false</code> otherwise. + * <p> + * This method gets the dispose state for the GC. + * When a GC has been disposed, it is an error to + * invoke any other method using the GC. + * + * @return <code>true</code> when the GC is disposed and <code>false</code> otherwise + */ +public boolean isDisposed() { + return handle == 0; +} +boolean isIdentity(double[] matrix) { + if (matrix == null) return true; + return matrix[0] == 1 && matrix[1] == 0 && matrix[2] == 0 && matrix[3] == 1 && matrix[4] == 0 && matrix[5] == 0; +} +/** + * Sets the receiver to always use the operating system's advanced graphics + * subsystem for all graphics operations if the argument is <code>true</code>. + * If the argument is <code>false</code>, the advanced graphics subsystem is + * no longer used, advanced graphics state is cleared and the normal graphics + * subsystem is used from now on. + * <p> + * Normally, the advanced graphics subsystem is invoked automatically when + * any one of the alpha, antialias, patterns, interpolation, paths, clipping + * or transformation operations in the receiver is requested. When the receiver + * is switched into advanced mode, the advanced graphics subsystem performs both + * advanced and normal graphics operations. Because the two subsystems are + * different, their output may differ. Switching to advanced graphics before + * any graphics operations are performed ensures that the output is consistent. + * </p><p> + * Advanced graphics may not be installed for the operating system. In this + * case, this operation does nothing. Some operating system have only one + * graphics subsystem, so switching from normal to advanced graphics does + * nothing. However, switching from advanced to normal graphics will always + * clear the advanced graphics state, even for operating systems that have + * only one graphics subsystem. + * </p> + * + * @param advanced the new advanced graphics state + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @see #setAlpha + * @see #setAntialias + * @see #setBackgroundPattern + * @see #setClipping(Path) + * @see #setForegroundPattern + * @see #setLineAttributes + * @see #setInterpolation + * @see #setTextAntialias + * @see #setTransform + * @see #getAdvanced + * + * @since 3.1 + */ +public void setAdvanced(boolean advanced) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (advanced && data.cairo != 0) return; + if (advanced) { + try { + initCairo(); + } catch (SWTException e) {} + } else { + int /*long*/ cairo = data.cairo; + if (cairo != 0) Cairo.cairo_destroy(cairo); + data.cairo = 0; + data.interpolation = SWT.DEFAULT; + data.backgroundPattern = data.foregroundPattern = null; + data.state = 0; + setClipping(0); + } +} +/** + * Sets the receiver's alpha value which must be + * between 0 (transparent) and 255 (opaque). + * <p> + * This operation requires the operating system's advanced + * graphics subsystem which may not be available on some + * platforms. + * </p> + * @param alpha the alpha value + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> + * </ul> + * + * @see #getAdvanced + * @see #setAdvanced + * + * @since 3.1 + */ +public void setAlpha(int alpha) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (data.cairo == 0 && (alpha & 0xff) == 0xff) return; + initCairo(); + data.alpha = alpha & 0xff; + data.state &= ~(BACKGROUND | FOREGROUND | BACKGROUND_BG); +} +/** + * Sets the receiver's anti-aliasing value to the parameter, + * which must be one of <code>SWT.DEFAULT</code>, <code>SWT.OFF</code> + * or <code>SWT.ON</code>. Note that this controls anti-aliasing for all + * <em>non-text drawing</em> operations. + * <p> + * This operation requires the operating system's advanced + * graphics subsystem which may not be available on some + * platforms. + * </p> + * + * @param antialias the anti-aliasing setting + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_INVALID_ARGUMENT - if the parameter is not one of <code>SWT.DEFAULT</code>, + * <code>SWT.OFF</code> or <code>SWT.ON</code></li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> + * </ul> + * + * @see #getAdvanced + * @see #setAdvanced + * @see #setTextAntialias + * + * @since 3.1 + */ +public void setAntialias(int antialias) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (data.cairo == 0 && antialias == SWT.DEFAULT) return; + int mode = 0; + switch (antialias) { + case SWT.DEFAULT: mode = Cairo.CAIRO_ANTIALIAS_DEFAULT; break; + case SWT.OFF: mode = Cairo.CAIRO_ANTIALIAS_NONE; break; + case SWT.ON: mode = Cairo.CAIRO_ANTIALIAS_GRAY; + break; + default: + SWT.error(SWT.ERROR_INVALID_ARGUMENT); + } + initCairo(); + int /*long*/ cairo = data.cairo; + Cairo.cairo_set_antialias(cairo, mode); +} +/** + * Invokes platform specific functionality to allocate a new graphics context. + * <p> + * <b>IMPORTANT:</b> This method is <em>not</em> part of the public + * API for <code>GC</code>. It is marked public only so that it + * can be shared within the packages provided by SWT. It is not + * available on all platforms, and should never be called from + * application code. + * </p> + * + * @param drawable the Drawable for the receiver. + * @param data the data for the receiver. + * + * @return a new <code>GC</code> + */ +public static GC motif_new(Drawable drawable, GCData data) { + GC gc = new GC(); + int xGC = drawable.internal_new_GC(data); + gc.device = data.device; + gc.init(drawable, data, xGC); + return gc; +} +/** + * Invokes platform specific functionality to wrap a graphics context. + * <p> + * <b>IMPORTANT:</b> This method is <em>not</em> part of the public + * API for <code>GC</code>. It is marked public only so that it + * can be shared within the packages provided by SWT. It is not + * available on all platforms, and should never be called from + * application code. + * </p> + * + * @param xGC the X Windows graphics context. + * @param data the data for the receiver. + * + * @return a new <code>GC</code> + */ +public static GC motif_new(int xGC, GCData data) { + GC gc = new GC(); + gc.device = data.device; + gc.init(null, data, xGC); + return gc; +} +/** + * Sets the background color. The background color is used + * for fill operations and as the background color when text + * is drawn. + * + * @param color the new background color for the receiver + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the color is null</li> + * <li>ERROR_INVALID_ARGUMENT - if the color has been disposed</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void setBackground (Color color) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (color == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); + data.background = color.handle; + data.backgroundPattern = null; + data.state &= ~(BACKGROUND | BACKGROUND_BG); + data.state |= BACKGROUND_RGB; +} +/** + * Sets the background pattern. The default value is <code>null</code>. + * <p> + * This operation requires the operating system's advanced + * graphics subsystem which may not be available on some + * platforms. + * </p> + * + * @param pattern the new background pattern + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> + * </ul> + * + * @see Pattern + * @see #getAdvanced + * @see #setAdvanced + * + * @since 3.1 + */ +public void setBackgroundPattern(Pattern pattern) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (pattern != null && pattern.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); + if (data.cairo == 0 && pattern == null) return; + initCairo(); + if (data.backgroundPattern == pattern) return; + data.backgroundPattern = pattern; + data.state &= ~BACKGROUND; +} +static void setCairoFont(int /*long*/ cairo, Font font) { + //TODO - use X font instead of loading new one??? + FontData[] fds = font.getFontData(); + FontData fd = fds[0]; + int style = fd.getStyle(); + int slant = Cairo.CAIRO_FONT_SLANT_NORMAL; + if ((style & SWT.ITALIC) != 0) slant = Cairo.CAIRO_FONT_SLANT_ITALIC; + int weight = Cairo.CAIRO_FONT_WEIGHT_NORMAL; + if ((style & SWT.BOLD) != 0) weight = Cairo.CAIRO_FONT_WEIGHT_BOLD; + String name = fd.getName(); + int index = name.indexOf('-'); + if (index != -1) name = name.substring(index + 1); + byte[] buffer = Converter.wcsToMbcs(null, name, true); + Cairo.cairo_select_font_face(cairo, buffer, slant, weight); + Cairo.cairo_set_font_size(cairo, fd.getHeight()); +} +static void setCairoRegion(int /*long*/ cairo, int /*long*/ rgn) { + //TODO - get rectangles from region instead of clip box + XRectangle rect = new XRectangle(); + OS.XClipBox(rgn, rect); + Cairo.cairo_rectangle(cairo, rect.x, rect.y, rect.width, rect.height); +} +static void setCairoPatternColor(int /*long*/ pattern, int offset, Color c, int alpha) { + XColor color = c.handle; + double aa = (alpha & 0xFF) / (double)0xFF; + double red = ((color.red & 0xFFFF) / (double)0xFFFF); + double green = ((color.green & 0xFFFF) / (double)0xFFFF); + double blue = ((color.blue & 0xFFFF) / (double)0xFFFF); + Cairo.cairo_pattern_add_color_stop_rgba(pattern, offset, red, green, blue, aa); +} +void setCairoClip(int /*long*/ damageRgn, int /*long*/ clipRgn) { + int /*long*/ cairo = data.cairo; + Cairo.cairo_reset_clip(cairo); + if (damageRgn != 0) { + double[] matrix = new double[6]; + Cairo.cairo_get_matrix(cairo, matrix); + Cairo.cairo_identity_matrix(cairo); + setCairoRegion(cairo, damageRgn); + Cairo.cairo_clip(cairo); + Cairo.cairo_set_matrix(cairo, matrix); + } + if (clipRgn != 0) { + setCairoRegion(cairo, clipRgn); + Cairo.cairo_clip(cairo); + } +} +void setClipping(int clipRgn) { + int /*long*/ cairo = data.cairo; + if (clipRgn == 0) { + if (data.clipRgn != 0) { + OS.XDestroyRegion (data.clipRgn); + data.clipRgn = 0; + } + if (cairo != 0) { + data.clippingTransform = null; + setCairoClip(data.damageRgn, 0); + } else { + if (data.damageRgn == 0) { + OS.XSetClipMask (data.display, handle, OS.None); + } else { + OS.XSetRegion (data.display, handle, data.damageRgn); + } + } + } else { + if (data.clipRgn == 0) data.clipRgn = OS.XCreateRegion (); + OS.XSubtractRegion (data.clipRgn, data.clipRgn, data.clipRgn); + OS.XUnionRegion (clipRgn, data.clipRgn, data.clipRgn); + if (cairo != 0) { + if (data.clippingTransform == null) data.clippingTransform = new double[6]; + Cairo.cairo_get_matrix(cairo, data.clippingTransform); + setCairoClip(data.damageRgn, clipRgn); + } else { + int clipping = clipRgn; + if (data.damageRgn != 0) { + clipping = OS.XCreateRegion(); + OS.XUnionRegion(clipping, clipRgn, clipping); + OS.XIntersectRegion(clipping, data.damageRgn, clipping); + } + OS.XSetRegion (data.display, handle, clipping); + if (clipping != clipRgn) OS.XDestroyRegion(clipping); + } + } +} +/** + * Sets the area of the receiver which can be changed + * by drawing operations to the rectangular area specified + * by the arguments. + * + * @param x the x coordinate of the clipping rectangle + * @param y the y coordinate of the clipping rectangle + * @param width the width of the clipping rectangle + * @param height the height of the clipping rectangle + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void setClipping (int x, int y, int width, int height) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (width < 0) { + x = x + width; + width = -width; + } + if (height < 0) { + y = y + height; + height = -height; + } + XRectangle rect = new XRectangle (); + rect.x = (short) x; + rect.y = (short) y; + rect.width = (short) Math.max (0, width); + rect.height = (short) Math.max (0, height); + int clipRgn = OS.XCreateRegion(); + OS.XUnionRectWithRegion(rect, clipRgn, clipRgn); + setClipping(clipRgn); + OS.XDestroyRegion(clipRgn); +} +/** + * Sets the area of the receiver which can be changed + * by drawing operations to the path specified + * by the argument. + * <p> + * This operation requires the operating system's advanced + * graphics subsystem which may not be available on some + * platforms. + * </p> + * + * @param path the clipping path. + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_INVALID_ARGUMENT - if the path has been disposed</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> + * </ul> + * + * @see Path + * @see #getAdvanced + * @see #setAdvanced + * + * @since 3.1 + */ +public void setClipping(Path path) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (path != null && path.isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + setClipping(0); + if (path != null) { + initCairo(); + int /*long*/ cairo = data.cairo; + int /*long*/ copy = Cairo.cairo_copy_path(path.handle); + if (copy == 0) SWT.error(SWT.ERROR_NO_HANDLES); + Cairo.cairo_append_path(cairo, copy); + Cairo.cairo_path_destroy(copy); + Cairo.cairo_clip(cairo); + Cairo.cairo_new_path(cairo); + } +} +/** + * Sets the area of the receiver which can be changed + * by drawing operations to the rectangular area specified + * by the argument. Specifying <code>null</code> for the + * rectangle reverts the receiver's clipping area to its + * original value. + * + * @param rect the clipping rectangle or <code>null</code> + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void setClipping (Rectangle rect) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (rect == null) { + setClipping(0); + } else { + setClipping (rect.x, rect.y, rect.width, rect.height); + } +} +/** + * Sets the area of the receiver which can be changed + * by drawing operations to the region specified + * by the argument. Specifying <code>null</code> for the + * region reverts the receiver's clipping area to its + * original value. + * + * @param region the clipping region or <code>null</code> + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_INVALID_ARGUMENT - if the region has been disposed</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void setClipping (Region region) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (region != null && region.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); + setClipping(region != null ? region.handle : 0); +} +/** + * Sets the receiver's fill rule to the parameter, which must be one of + * <code>SWT.FILL_EVEN_ODD</code> or <code>SWT.FILL_WINDING</code>. + * + * @param rule the new fill rule + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_INVALID_ARGUMENT - if the rule is not one of <code>SWT.FILL_EVEN_ODD</code> + * or <code>SWT.FILL_WINDING</code></li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @since 3.1 + */ +public void setFillRule(int rule) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + int mode = OS.EvenOddRule, cairo_mode = Cairo.CAIRO_FILL_RULE_EVEN_ODD; + switch (rule) { + case SWT.FILL_WINDING: + mode = OS.WindingRule; cairo_mode = Cairo.CAIRO_FILL_RULE_WINDING; break; + case SWT.FILL_EVEN_ODD: + mode = OS.EvenOddRule; cairo_mode = Cairo.CAIRO_FILL_RULE_EVEN_ODD; break; + default: + SWT.error(SWT.ERROR_INVALID_ARGUMENT); + } + OS.XSetFillRule(data.display, handle, mode); + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + Cairo.cairo_set_fill_rule(cairo, cairo_mode); + } +} +/** + * Sets the font which will be used by the receiver + * to draw and measure text to the argument. If the + * argument is null, then a default font appropriate + * for the platform will be used instead. + * + * @param font the new font for the receiver, or null to indicate a default font + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_INVALID_ARGUMENT - if the font has been disposed</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void setFont (Font font) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (font != null && font.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); + data.font = font != null ? font : data.device.systemFont; + data.state &= ~FONT; + if (data.renderTable != 0) OS.XmRenderTableFree(data.renderTable); + data.renderTable = 0; + data.stringWidth = data.stringHeight = data.textWidth = data.textHeight = -1; +} +/** + * Sets the foreground color. The foreground color is used + * for drawing operations including when text is drawn. + * + * @param color the new foreground color for the receiver + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the color is null</li> + * <li>ERROR_INVALID_ARGUMENT - if the color has been disposed</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void setForeground (Color color) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (color == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); + data.foreground = color.handle; + data.foregroundPattern = null; + data.state &= ~FOREGROUND; + data.state |= FOREGROUND_RGB; +} +/** + * Sets the foreground pattern. The default value is <code>null</code>. + * <p> + * This operation requires the operating system's advanced + * graphics subsystem which may not be available on some + * platforms. + * </p> + * @param pattern the new foreground pattern + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> + * </ul> + * + * @see Pattern + * @see #getAdvanced + * @see #setAdvanced + * + * @since 3.1 + */ +public void setForegroundPattern(Pattern pattern) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (pattern != null && pattern.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); + if (data.cairo == 0 && pattern == null) return; + initCairo(); + if (data.foregroundPattern == pattern) return; + data.foregroundPattern = pattern; + data.state &= ~FOREGROUND; +} +/** + * Sets the receiver's interpolation setting to the parameter, which + * must be one of <code>SWT.DEFAULT</code>, <code>SWT.NONE</code>, + * <code>SWT.LOW</code> or <code>SWT.HIGH</code>. + * <p> + * This operation requires the operating system's advanced + * graphics subsystem which may not be available on some + * platforms. + * </p> + * + * @param interpolation the new interpolation setting + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_INVALID_ARGUMENT - if the rule is not one of <code>SWT.DEFAULT</code>, + * <code>SWT.NONE</code>, <code>SWT.LOW</code> or <code>SWT.HIGH</code> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> + * </ul> + * + * @see #getAdvanced + * @see #setAdvanced + * + * @since 3.1 + */ +public void setInterpolation(int interpolation) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (data.cairo == 0 && interpolation == SWT.DEFAULT) return; + switch (interpolation) { + case SWT.DEFAULT: + case SWT.NONE: + case SWT.LOW: + case SWT.HIGH: + break; + default: + SWT.error(SWT.ERROR_INVALID_ARGUMENT); + } + initCairo(); + data.interpolation = interpolation; +} +/** + * Sets the receiver's line attributes. + * <p> + * This operation requires the operating system's advanced + * graphics subsystem which may not be available on some + * platforms. + * </p> + * @param attributes the line attributes + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the attributes is null</li> + * <li>ERROR_INVALID_ARGUMENT - if any of the line attributes is not valid</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> + * </ul> + * + * @see LineAttributes + * @see #getAdvanced + * @see #setAdvanced + * + * @since 3.3 + */ +public void setLineAttributes(LineAttributes attributes) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (attributes == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + int mask = 0; + float lineWidth = attributes.width; + if (lineWidth != data.lineWidth) { + mask |= LINE_WIDTH | DRAW_OFFSET; + } + int lineStyle = attributes.style; + if (lineStyle != data.lineStyle) { + mask |= LINE_STYLE; + switch (lineStyle) { + case SWT.LINE_SOLID: + case SWT.LINE_DASH: + case SWT.LINE_DOT: + case SWT.LINE_DASHDOT: + case SWT.LINE_DASHDOTDOT: + break; + case SWT.LINE_CUSTOM: + if (attributes.dash == null) lineStyle = SWT.LINE_SOLID; + break; + default: + SWT.error(SWT.ERROR_INVALID_ARGUMENT); + } + } + int join = attributes.join; + if (join != data.lineJoin) { + mask |= LINE_JOIN; + switch (join) { + case SWT.CAP_ROUND: + case SWT.CAP_FLAT: + case SWT.CAP_SQUARE: + break; + default: + SWT.error(SWT.ERROR_INVALID_ARGUMENT); + } + } + int cap = attributes.cap; + if (cap != data.lineCap) { + mask |= LINE_CAP; + switch (cap) { + case SWT.JOIN_MITER: + case SWT.JOIN_ROUND: + case SWT.JOIN_BEVEL: + break; + default: + SWT.error(SWT.ERROR_INVALID_ARGUMENT); + } + } + float[] dashes = attributes.dash; + float[] lineDashes = data.lineDashes; + if (dashes != null && dashes.length > 0) { + boolean changed = lineDashes == null || lineDashes.length != dashes.length; + for (int i = 0; i < dashes.length; i++) { + float dash = dashes[i]; + if (dash <= 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); + if (!changed && lineDashes[i] != dash) changed = true; + } + if (changed) { + float[] newDashes = new float[dashes.length]; + System.arraycopy(dashes, 0, newDashes, 0, dashes.length); + dashes = newDashes; + mask |= LINE_STYLE; + } else { + dashes = lineDashes; + } + } else { + if (lineDashes != null && lineDashes.length > 0) { + mask |= LINE_STYLE; + } else { + dashes = lineDashes; + } + } + float dashOffset = attributes.dashOffset; + if (dashOffset != data.lineDashesOffset) { + mask |= LINE_STYLE; + } + float miterLimit = attributes.miterLimit; + if (miterLimit != data.lineMiterLimit) { + mask |= LINE_MITERLIMIT; + } + initCairo(); + if (mask == 0) return; + data.lineWidth = lineWidth; + data.lineStyle = lineStyle; + data.lineCap = cap; + data.lineJoin = join; + data.lineDashes = dashes; + data.lineDashesOffset = dashOffset; + data.lineMiterLimit = miterLimit; + data.state &= ~mask; +} +/** + * Sets the receiver's line cap style to the argument, which must be one + * of the constants <code>SWT.CAP_FLAT</code>, <code>SWT.CAP_ROUND</code>, + * or <code>SWT.CAP_SQUARE</code>. + * + * @param cap the cap style to be used for drawing lines + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_INVALID_ARGUMENT - if the style is not valid</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @since 3.1 + */ +public void setLineCap(int cap) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (data.lineCap == cap) return; + switch (cap) { + case SWT.CAP_ROUND: + case SWT.CAP_FLAT: + case SWT.CAP_SQUARE: + break; + default: + SWT.error(SWT.ERROR_INVALID_ARGUMENT); + } + data.lineCap = cap; + data.state &= ~LINE_CAP; +} +/** + * Sets the receiver's line dash style to the argument. The default + * value is <code>null</code>. If the argument is not <code>null</code>, + * the receiver's line style is set to <code>SWT.LINE_CUSTOM</code>, otherwise + * it is set to <code>SWT.LINE_SOLID</code>. + * + * @param dashes the dash style to be used for drawing lines + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_INVALID_ARGUMENT - if any of the values in the array is less than or equal 0</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @since 3.1 + */ +public void setLineDash(int[] dashes) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + float[] lineDashes = data.lineDashes; + if (dashes != null && dashes.length > 0) { + boolean changed = data.lineStyle != SWT.LINE_CUSTOM || lineDashes == null || lineDashes.length != dashes.length; + for (int i = 0; i < dashes.length; i++) { + int dash = dashes[i]; + if (dash <= 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); + if (!changed && lineDashes[i] != dash) changed = true; + } + if (!changed) return; + data.lineDashes = new float[dashes.length]; + for (int i = 0; i < dashes.length; i++) { + data.lineDashes[i] = dashes[i]; + } + data.lineStyle = SWT.LINE_CUSTOM; + } else { + if (data.lineStyle == SWT.LINE_SOLID && (lineDashes == null || lineDashes.length == 0)) return; + data.lineDashes = null; + data.lineStyle = SWT.LINE_SOLID; + } + data.state &= ~LINE_STYLE; +} +/** + * Sets the receiver's line join style to the argument, which must be one + * of the constants <code>SWT.JOIN_MITER</code>, <code>SWT.JOIN_ROUND</code>, + * or <code>SWT.JOIN_BEVEL</code>. + * + * @param join the join style to be used for drawing lines + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_INVALID_ARGUMENT - if the style is not valid</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @since 3.1 + */ +public void setLineJoin(int join) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (data.lineJoin == join) return; + switch (join) { + case SWT.JOIN_MITER: + case SWT.JOIN_ROUND: + case SWT.JOIN_BEVEL: + break; + default: + SWT.error(SWT.ERROR_INVALID_ARGUMENT); + } + data.lineJoin = join; + data.state &= ~LINE_JOIN; +} +/** + * Sets the receiver's line style to the argument, which must be one + * of the constants <code>SWT.LINE_SOLID</code>, <code>SWT.LINE_DASH</code>, + * <code>SWT.LINE_DOT</code>, <code>SWT.LINE_DASHDOT</code> or + * <code>SWT.LINE_DASHDOTDOT</code>. + * + * @param lineStyle the style to be used for drawing lines + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_INVALID_ARGUMENT - if the style is not valid</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void setLineStyle(int lineStyle) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (data.lineStyle == lineStyle) return; + switch (lineStyle) { + case SWT.LINE_SOLID: + case SWT.LINE_DASH: + case SWT.LINE_DOT: + case SWT.LINE_DASHDOT: + case SWT.LINE_DASHDOTDOT: + break; + case SWT.LINE_CUSTOM: + if (data.lineDashes == null) lineStyle = SWT.LINE_SOLID; + break; + default: + SWT.error(SWT.ERROR_INVALID_ARGUMENT); + } + data.lineStyle = lineStyle; + data.state &= ~LINE_STYLE; +} +/** + * Sets the width that will be used when drawing lines + * for all of the figure drawing operations (that is, + * <code>drawLine</code>, <code>drawRectangle</code>, + * <code>drawPolyline</code>, and so forth. + * <p> + * Note that line width of zero is used as a hint to + * indicate that the fastest possible line drawing + * algorithms should be used. This means that the + * output may be different from line width one. + * </p> + * + * @param lineWidth the width of a line + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public void setLineWidth(int lineWidth) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (data.lineWidth == lineWidth) return; + data.lineWidth = lineWidth; + data.state &= ~(LINE_WIDTH | DRAW_OFFSET); +} +void setString(String string) { + if (string == data.string) return; + if (data.xmString != 0) OS.XmStringFree(data.xmString); + byte[] buffer = Converter.wcsToMbcs(getCodePage (), string, true); + data.xmString = OS.XmStringCreate(buffer, OS.XmFONTLIST_DEFAULT_TAG); + data.string = string; + data.stringWidth = data.stringHeight = -1; +} +void setText(String string, int flags) { + if (data.renderTable == 0) createRenderTable(); + if (string == data.text && (flags & ~SWT.DRAW_TRANSPARENT) == (data.drawFlags & ~SWT.DRAW_TRANSPARENT)) { + return; + } + if (data.xmText != 0) OS.XmStringFree(data.xmText); + if (data.xmMnemonic != 0) OS.XmStringFree(data.xmMnemonic); + char mnemonic = 0; + int tableLength = 0; + Device device = data.device; + int[] parseTable = new int[2]; + char[] text = new char[string.length()]; + string.getChars(0, text.length, text, 0); + if ((flags & SWT.DRAW_DELIMITER) != 0) parseTable[tableLength++] = device.crMapping; + if ((flags & SWT.DRAW_TAB) != 0) parseTable[tableLength++] = device.tabMapping; + if ((flags & SWT.DRAW_MNEMONIC) != 0) mnemonic = fixMnemonic(text); + String codePage = getCodePage(); + byte[] buffer = Converter.wcsToMbcs(codePage, text, true); + data.xmText = OS.XmStringParseText(buffer, 0, OS.XmFONTLIST_DEFAULT_TAG, OS.XmCHARSET_TEXT, parseTable, tableLength, 0); + if (mnemonic != 0) { + byte [] buffer1 = Converter.wcsToMbcs(codePage, new char[]{mnemonic}, true); + data.xmMnemonic = OS.XmStringCreate (buffer1, OS.XmFONTLIST_DEFAULT_TAG); + } else { + data.xmMnemonic = 0; + } + data.text = string; + data.textWidth = data.textHeight = -1; + data.drawFlags = flags; +} +/** + * Sets the receiver's text anti-aliasing value to the parameter, + * which must be one of <code>SWT.DEFAULT</code>, <code>SWT.OFF</code> + * or <code>SWT.ON</code>. Note that this controls anti-aliasing only + * for all <em>text drawing</em> operations. + * <p> + * This operation requires the operating system's advanced + * graphics subsystem which may not be available on some + * platforms. + * </p> + * + * @param antialias the anti-aliasing setting + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_INVALID_ARGUMENT - if the parameter is not one of <code>SWT.DEFAULT</code>, + * <code>SWT.OFF</code> or <code>SWT.ON</code></li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> + * </ul> + * + * @see #getAdvanced + * @see #setAdvanced + * @see #setAntialias + * + * @since 3.1 + */ +public void setTextAntialias(int antialias) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (data.cairo == 0 && antialias == SWT.DEFAULT) return; + int mode = 0; + switch (antialias) { + case SWT.DEFAULT: mode = Cairo.CAIRO_ANTIALIAS_DEFAULT; break; + case SWT.OFF: mode = Cairo.CAIRO_ANTIALIAS_NONE; break; + case SWT.ON: mode = Cairo.CAIRO_ANTIALIAS_GRAY; + break; + default: + SWT.error(SWT.ERROR_INVALID_ARGUMENT); + } + initCairo(); + int /*long*/ options = Cairo.cairo_font_options_create(); + Cairo.cairo_font_options_set_antialias(options, mode); + Cairo.cairo_set_font_options(data.cairo, options); + Cairo.cairo_font_options_destroy(options); +} +/** + * Sets the transform that is currently being used by the receiver. If + * the argument is <code>null</code>, the current transform is set to + * the identity transform. + * <p> + * This operation requires the operating system's advanced + * graphics subsystem which may not be available on some + * platforms. + * </p> + * + * @param transform the transform to set + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_INVALID_ARGUMENT - if the parameter has been disposed</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * <li>ERROR_NO_GRAPHICS_LIBRARY - if advanced graphics are not available</li> + * </ul> + * + * @see Transform + * @see #getAdvanced + * @see #setAdvanced + * + * @since 3.1 + */ +public void setTransform(Transform transform) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (transform != null && transform.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); + if (data.cairo == 0 && transform == null) return; + initCairo(); + int /*long*/ cairo = data.cairo; + if (transform != null) { + Cairo.cairo_set_matrix(cairo, transform.handle); + } else { + Cairo.cairo_identity_matrix(cairo); + } + data.state &= ~DRAW_OFFSET; +} +/** + * If the argument is <code>true</code>, puts the receiver + * in a drawing mode where the resulting color in the destination + * is the <em>exclusive or</em> of the color values in the source + * and the destination, and if the argument is <code>false</code>, + * puts the receiver in a drawing mode where the destination color + * is replaced with the source color value. + * <p> + * Note that this mode in fundamentally unsupportable on certain + * platforms, notably Carbon (Mac OS X). Clients that want their + * code to run on all platforms need to avoid this method. + * </p> + * + * @param xor if <code>true</code>, then <em>xor</em> mode is used, otherwise <em>source copy</em> mode is used + * + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + * + * @deprecated this functionality is not supported on some platforms + */ +public void setXORMode(boolean xor) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + OS.XSetFunction(data.display, handle, xor ? OS.GXxor : OS.GXcopy); +} +/** + * Returns the extent of the given string. No tab + * expansion or carriage return processing will be performed. + * <p> + * The <em>extent</em> of a string is the width and height of + * the rectangular area it would cover if drawn in a particular + * font (in this case, the current font in the receiver). + * </p> + * + * @param string the string to measure + * @return a point containing the extent of the string + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the string is null</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public Point stringExtent(String string) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + checkGC(FONT); + byte[] buffer = Converter.wcsToMbcs(null, string, true); + cairo_font_extents_t font_extents = new cairo_font_extents_t(); + Cairo.cairo_font_extents(cairo, font_extents); + cairo_text_extents_t extents = new cairo_text_extents_t(); + Cairo.cairo_text_extents(cairo, buffer, extents); + return new Point((int)extents.width, (int)font_extents.height); + } + setString(string); + checkGC(FONT); + if (data.stringWidth != -1) return new Point(data.stringWidth, data.stringHeight); + int width, height; + if (string.length() == 0) { + width = 0; + height = getFontHeight(); + } else { + int fontList = data.font.handle; + int xmString = data.xmString; + width = OS.XmStringWidth(fontList, xmString); + height = OS.XmStringHeight(fontList, xmString); + } + return new Point(data.stringWidth = width, data.stringHeight = height); +} +/** + * Returns the extent of the given string. Tab expansion and + * carriage return processing are performed. + * <p> + * The <em>extent</em> of a string is the width and height of + * the rectangular area it would cover if drawn in a particular + * font (in this case, the current font in the receiver). + * </p> + * + * @param string the string to measure + * @return a point containing the extent of the string + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the string is null</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public Point textExtent(String string) { + return textExtent(string, SWT.DRAW_DELIMITER | SWT.DRAW_TAB); +} +/** + * Returns the extent of the given string. Tab expansion, line + * delimiter and mnemonic processing are performed according to + * the specified flags, which can be a combination of: + * <dl> + * <dt><b>DRAW_DELIMITER</b></dt> + * <dd>draw multiple lines</dd> + * <dt><b>DRAW_TAB</b></dt> + * <dd>expand tabs</dd> + * <dt><b>DRAW_MNEMONIC</b></dt> + * <dd>underline the mnemonic character</dd> + * <dt><b>DRAW_TRANSPARENT</b></dt> + * <dd>transparent background</dd> + * </dl> + * <p> + * The <em>extent</em> of a string is the width and height of + * the rectangular area it would cover if drawn in a particular + * font (in this case, the current font in the receiver). + * </p> + * + * @param string the string to measure + * @param flags the flags specifying how to process the text + * @return a point containing the extent of the string + * + * @exception IllegalArgumentException <ul> + * <li>ERROR_NULL_ARGUMENT - if the string is null</li> + * </ul> + * @exception SWTException <ul> + * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> + * </ul> + */ +public Point textExtent(String string, int flags) { + if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); + if (string == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); + int /*long*/ cairo = data.cairo; + if (cairo != 0) { + //TODO - honor flags + checkGC(FONT); + byte[] buffer = Converter.wcsToMbcs(null, string, true); + cairo_font_extents_t font_extents = new cairo_font_extents_t(); + Cairo.cairo_font_extents(cairo, font_extents); + cairo_text_extents_t extents = new cairo_text_extents_t(); + Cairo.cairo_text_extents(cairo, buffer, extents); + return new Point((int)extents.width, (int)font_extents.height); + } + setText(string, flags); + checkGC(FONT); + if (data.textWidth != -1) return new Point(data.textWidth, data.textHeight); + int width, height; + if (string.length() == 0) { + width = 0; + height = getFontHeight(); + } else { + int fontList = data.font.handle; + int xmText = data.xmText; + width = OS.XmStringWidth(fontList, xmText); + height = OS.XmStringHeight(fontList, xmText); + } + return new Point(data.textWidth = width, data.textHeight = height); +} +/** + * Returns a string containing a concise, human-readable + * description of the receiver. + * + * @return a string representation of the receiver + */ +public String toString () { + if (isDisposed()) return "GC {*DISPOSED*}"; + return "GC {" + handle + "}"; +} +} |