diff options
Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/GC.java')
| -rw-r--r-- | bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/GC.java | 1759 |
1 files changed, 0 insertions, 1759 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/GC.java b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/GC.java deleted file mode 100644 index 24374928a3..0000000000 --- a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/GC.java +++ /dev/null @@ -1,1759 +0,0 @@ -package org.eclipse.swt.graphics; - -/* - * (c) Copyright IBM Corp. 2000, 2001. - * All Rights Reserved - */ - -import org.eclipse.swt.widgets.*; -import org.eclipse.swt.internal.gtk.*; -import org.eclipse.swt.internal.*; -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>. - * <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> - * - * @see org.eclipse.swt.events.PaintEvent - */ -public final class GC { - /** - * the handle to the OS device context - * (Warning: This field is platform dependent) - */ - public int handle; - Drawable drawable; - GCData data; - - -/* - * === Constructors === - */ - -GC() { -} - -/** - * Constructs a new instance of this class which has been - * configured to draw on the specified drawable. Sets the - * foreground and background color 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_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> - */ -public GC(Drawable drawable) { - if (drawable == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); - - data = new GCData(); - handle = drawable.internal_new_GC(data); - this.drawable = drawable; - - // The colors we get from the widget are not always right. - // Get the default GTK_STATE_NORMAL colors - setBackground( DefaultGtkStyle.instance().backgroundColorNORMAL() ); - setForeground( DefaultGtkStyle.instance().foregroundColorNORMAL() ); - - - // Feature in GDK. - // Sometimes, gdk_gc_new() doesn't get the font from the control, - // and also, some controls don't contain a font; so when the GC - // was created in internal_new_gc(), the font might or might not - // be set; if the font isn't there, just fall back to default. - GdkGCValues values = new GdkGCValues(); - OS.gdk_gc_get_values(handle, values); - if (values.font == 0) { - OS.gdk_gc_set_font(handle, DefaultGtkStyle.instance().loadDefaultFont() ); - } - - if (data.image != null) { - data.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(); - } - -} - - - -/** - * 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> - */ -/* - * === Access - Get/Set === - */ - -public Color getBackground() { - if (handle == 0) error(SWT.ERROR_WIDGET_DISPOSED); - GdkColor gdkColor = _getBackgroundGdkColor(); - return Color.gtk_new(gdkColor); -} -/** - * 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 (color == null) error(SWT.ERROR_NULL_ARGUMENT); - if (color.handle == null) error(SWT.ERROR_NULL_ARGUMENT); - if (handle == 0) error(SWT.ERROR_WIDGET_DISPOSED); - OS.gdk_gc_set_background(handle, color.handle); -} - -/** - * 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) error(SWT.ERROR_WIDGET_DISPOSED); - GdkColor gdkColor = _getForegroundGdkColor(); - return Color.gtk_new(gdkColor); -} - -/** - * 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) error(SWT.ERROR_WIDGET_DISPOSED); - if (color == null) error(SWT.ERROR_NULL_ARGUMENT); - if (color.handle == null) error(SWT.ERROR_NULL_ARGUMENT); - OS.gdk_gc_set_foreground(handle, color.handle); -} - - - - - - - -/** - * 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> - */ -/* - * === Access - Get - Calculated === - */ - -public int getAdvanceWidth(char ch) { - byte[] charBuffer = Converter.wcsToMbcs(null, new char[] { ch }); - return OS.gdk_char_width(_getGCFont(), charBuffer[0]); -} -/** - * 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) { - byte[] charBuffer = Converter.wcsToMbcs(null, new char[] { ch }); - int[] lbearing = new int[1]; - int[] rbearing = new int[1]; - int[] unused = new int[1]; - OS.gdk_string_extents(_getGCFont(), charBuffer, lbearing, rbearing, unused, unused, unused); - return rbearing[0] - lbearing[0]; -} -/** - * 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 (data.clipRgn == 0) { - int[] width = new int[1]; int[] height = new int[1]; - int[] unused = new int[1]; - OS.gdk_window_get_geometry(data.drawable, unused, unused, width, height, unused); - return new Rectangle(0, 0, width[0], height[0]); - } - GdkRectangle rect = new GdkRectangle(); - OS.gdk_region_get_clipbox(data.clipRgn, rect); - return new Rectangle(rect.x, rect.y, rect.width, rect.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> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public void getClipping(Region region) { - if (region == null) error(SWT.ERROR_NULL_ARGUMENT); - int hRegion = region.handle; - if (data.clipRgn == 0) { - int[] width = new int[1]; int[] height = new int[1]; - int[] unused = new int[1]; - OS.gdk_window_get_geometry(data.drawable, unused, unused, width, height, unused); - hRegion = OS.gdk_region_new(); - GdkRectangle rect = new GdkRectangle(); - rect.x = 0; rect.y = 0; - rect.width = (short)width[0]; rect.height = (short)height[0]; - region.handle = OS.gdk_region_union_with_rect(hRegion, rect); - return; - } - hRegion = OS.gdk_region_new(); - region.handle = OS.gdk_regions_union(data.clipRgn, hRegion); -} -/** - * 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() { - return Font.gtk_new(_getGCFont()); -} -/** - * 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> - */ -// Not done -public FontMetrics getFontMetrics() { - int fontHandle = _getGCFont(); - if (fontHandle==0) { - error(SWT.ERROR_UNSPECIFIED); - } - GdkFont gdkFont = new GdkFont(); - OS.memmove(gdkFont, fontHandle, GdkFont.sizeof); - byte [] w = Converter.wcsToMbcs (null, "w", true); - return FontMetrics.gtk_new(fontHandle); -} - -/** - * 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() { - 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() { - GdkGCValues values = new GdkGCValues(); - OS.gdk_gc_get_values(handle, values); - return values.line_width; -} -/** - * 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() { - GdkGCValues values = new GdkGCValues(); - OS.gdk_gc_get_values(handle, values); - return values.function == OS.GDK_XOR; -} -/** - * 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() { - return data.clipRgn != 0; -} - - -/** - * 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 (data.clipRgn == 0) data.clipRgn = OS.gdk_region_new(); - GdkRectangle rect = new GdkRectangle(); - rect.x = (short)x; rect.y = (short)y; - rect.width = (short)width; rect.height = (short)height; - OS.gdk_gc_set_clip_rectangle(handle, rect); - data.clipRgn = OS.gdk_regions_subtract(data.clipRgn, data.clipRgn); - data.clipRgn = OS.gdk_region_union_with_rect(data.clipRgn, rect); -} -/** - * Sets the area of the receiver which can be changed - * by drawing operations to the rectangular area specified - * by the argument. - * - * @param rect the clipping rectangle - * - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public void setClipping(Rectangle rect) { - if (rect == null) error(SWT.ERROR_NULL_ARGUMENT); - 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. - * - * @param rect the clipping region. - * - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public void setClipping(Region region) { - if (data.clipRgn == 0) data.clipRgn = OS.gdk_region_new(); - if (region == null) { - data.clipRgn = OS.gdk_regions_subtract(data.clipRgn, data.clipRgn); - OS.gdk_gc_set_clip_mask(handle, OS.GDK_NONE); - } else { - data.clipRgn = OS.gdk_regions_subtract(data.clipRgn, data.clipRgn); - data.clipRgn = OS.gdk_regions_union(region.handle, data.clipRgn); - OS.gdk_gc_set_clip_region(handle, region.handle); - } -} -/** - * 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) { - int fontHandle = 0; - if (font == null) { - GtkStyle gtkStyle = new GtkStyle(); - int style = OS.gtk_widget_get_default_style(); - OS.memmove(gtkStyle, style, GtkStyle.sizeof); - fontHandle = gtkStyle.font; - } else { - fontHandle = font.handle; - } - OS.gdk_gc_set_font(handle, fontHandle); -} - -/** - * 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 SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public void setLineStyle(int lineStyle) { - switch (lineStyle) { - case SWT.LINE_SOLID: - this.data.lineStyle = lineStyle; - OS.gdk_gc_set_line_attributes(handle, 0, OS.GDK_LINE_SOLID, OS.GDK_CAP_BUTT, OS.GDK_JOIN_MITER); - return; - case SWT.LINE_DASH: - OS.gdk_gc_set_dashes(handle, 0, new byte[] {6, 2}, 2); - break; - case SWT.LINE_DOT: - OS.gdk_gc_set_dashes(handle, 0, new byte[] {3, 1}, 2); - break; - case SWT.LINE_DASHDOT: - OS.gdk_gc_set_dashes(handle, 0, new byte[] {6, 2, 3, 1}, 4); - break; - case SWT.LINE_DASHDOTDOT: - OS.gdk_gc_set_dashes(handle, 0, new byte[] {6, 2, 3, 1, 3, 1}, 6); - break; - default: - error(SWT.ERROR_INVALID_ARGUMENT); - } - this.data.lineStyle = lineStyle; - OS.gdk_gc_set_line_attributes(handle, 0, OS.GDK_LINE_DOUBLE_DASH, OS.GDK_CAP_BUTT, OS.GDK_JOIN_MITER); -} -/** - * 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. - * - * @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 width) { - if (data.lineStyle == SWT.LINE_SOLID) { - OS.gdk_gc_set_line_attributes(handle, width, OS.GDK_LINE_SOLID, OS.GDK_CAP_BUTT, OS.GDK_JOIN_MITER); - } else { - OS.gdk_gc_set_line_attributes(handle, width, OS.GDK_LINE_DOUBLE_DASH, OS.GDK_CAP_BUTT, OS.GDK_JOIN_MITER); - } -} -/** - * 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. - * - * @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> - */ -public void setXORMode(boolean val) { - if (val) { - OS.gdk_gc_set_function(handle, OS.GDK_XOR); - } else { - OS.gdk_gc_set_function(handle, OS.GDK_COPY); - } -} -/** - * 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 (string == null) error(SWT.ERROR_NULL_ARGUMENT); - byte[] buffer = Converter.wcsToMbcs(null, string, true); - int width = OS.gdk_string_width(_getGCFont(), buffer); - int height = OS.gdk_string_height(_getGCFont(), buffer); - return new Point(width, 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) { - if (string == null) error(SWT.ERROR_NULL_ARGUMENT); - byte[] buffer = Converter.wcsToMbcs(null, string, true); - int width = OS.gdk_string_width(_getGCFont(), buffer); - int height = OS.gdk_string_height(_getGCFont(), buffer); - return new Point(width, height); -} - - - -/* - * === Access - Internal utils === - */ - -private GdkGCValues _getGCValues() { - GdkGCValues values = new GdkGCValues(); - OS.gdk_gc_get_values(handle, values); - return values; -} -private GdkColor _getForegroundGdkColor() { - GdkGCValues values = _getGCValues(); - GdkColor color = new GdkColor(); - color.pixel = values.foreground_pixel; - color.red = values.foreground_red; - color.green = values.foreground_green; - color.blue = values.foreground_blue; - return color; -} -private GdkColor _getBackgroundGdkColor() { - GdkGCValues values = _getGCValues(); - GdkColor color = new GdkColor(); - color.pixel = values.background_pixel; - color.red = values.background_red; - color.green = values.background_green; - color.blue = values.background_blue; - return color; -} -private int _getGCFont() { - GdkGCValues values = _getGCValues(); - if (values.font==0) { - SWT.error(SWT.ERROR_UNSPECIFIED); - } - return values.font; -} - - - -/** - * 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> - */ -/* - * === Drawing operations proper === - */ - -/** - * Copies a rectangular area of the receiver at the specified - * position into the image, which must be of type <code>SWT.BITMAP</code>. - * - * @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 xGC = OS.gdk_gc_new(image.pixmap); - if (xGC == 0) SWT.error(SWT.ERROR_NO_HANDLES); - // is it possible/necessary to set the subwindow mode?? - OS.gdk_window_copy_area (image.pixmap, // dest window - xGC, - 0, 0, // dest coords - image.pixmap, // src window - x, y, // src coords - rect.width, rect.height); - OS.gdk_gc_destroy(xGC); -} - -/** - * 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 srcX, int srcY, int width, int height, int destX, int destY) { - OS.gdk_window_copy_area (data.drawable, handle, - destX, destY, - data.drawable, - srcX, srcY, width, height); -} - -/** - * 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 IllegalArgumentException <ul> - * <li>ERROR_INVALID_ARGUMENT - if any of the width, height or endAngle is zero.</li> - * </ul> - * @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 endAngle) { - if (width < 0) { - x = x + width; - width = -width; - } - if (height < 0) { - y = y + height; - height = -height; - } - if (width == 0 || height == 0 || endAngle == 0) { - error(SWT.ERROR_INVALID_ARGUMENT); - } - OS.gdk_draw_arc(data.drawable, handle, 0, x, y, width, height, startAngle * 64, endAngle * 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 forground 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 - */ -public void drawFocus(int x, int y, int width, int height) { - GtkStyle style = new GtkStyle(); - int hStyle = OS.gtk_widget_get_default_style(); - OS.memmove(style, hStyle, GtkStyle.sizeof); - GdkColor color = new GdkColor(); - color.pixel = style.fg0_pixel; - color.red = style.fg0_red; - color.green = style.fg0_green; - color.blue = style.fg0_blue; - GdkGCValues values = new GdkGCValues(); - OS.gdk_gc_get_values(handle, values); - OS.gdk_gc_set_foreground(handle, color); - OS.gdk_draw_rectangle(data.drawable, handle, 0, x, y, width, height); - color.pixel = values.foreground_pixel; - color.red = values.foreground_red; - color.green = values.foreground_green; - color.blue = values.foreground_blue; - OS.gdk_gc_set_foreground(handle, color); -} -/** - * 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 SWTError <ul> - * <li>ERROR_NO_HANDLES - if no handles are available to perform the operation</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public void drawImage(Image image, int x, int y) { - if (image == null) error(SWT.ERROR_NULL_ARGUMENT); - int pixmap = image.pixmap; - int [] unused = new int [1]; int [] width = new int [1]; int [] height = new int [1]; - OS.gdk_window_get_geometry(pixmap, unused, unused, width, height, unused); - drawImage(image, 0, 0, width[0], height[0], x, y, width[0], height[0]); -} - -/** - * 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 of the given coordinates - * are negative or lie outside the bounds of their respective images. - * - * @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 the given coordinates are outside the bounds of their respective images</li> - * </ul> - * @exception SWTError <ul> - * <li>ERROR_NO_HANDLES - if no handles are available to perform the operation</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public void drawImage(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight) { - /* basic sanity checks */ - 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 (srcImage == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); - if (srcImage.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); - - /* source image properties */ - int[] width = new int[1]; - int[] height = new int[1]; - int[] unused = new int[1]; - OS.gdk_window_get_geometry(srcImage.pixmap, unused, unused, width, height, unused); - if ((srcY + srcWidth > width[0]) || - (srcY + srcHeight > height[0])) { - error(SWT.ERROR_INVALID_ARGUMENT); - } - - /* Special case: If we don't need to scale, and there is no alpha/mask, - * then we can just blit the image inside the X server - no net traffic - */ - boolean needScaling = (srcWidth != destWidth) || (srcHeight != destHeight); - boolean simple = !needScaling & (srcImage.mask == 0); - - if (simple) { - OS.gdk_draw_pixmap(data.drawable, handle, srcImage.pixmap, - srcX, srcY, - destX, destY, - width[0], height[0]); - return; - } - - - /* Fetch a local GdkPixbuf from server */ - Pixbuffer pixbuf = new Pixbuffer(srcImage); - - /* Scale if necessary */ - if ((srcWidth != destWidth) || (srcHeight != destHeight)) { - double scale_x = (double)destWidth / (double)srcWidth; - double scale_y = (double)destHeight / (double)srcHeight; - double offset_x = - srcX * scale_x; - double offset_y = - srcY * scale_y; - - int destSizePixbuf = GDKPIXBUF.gdk_pixbuf_new ( - GDKPIXBUF.GDK_COLORSPACE_RGB, - true, 8, destWidth, destHeight); - GDKPIXBUF.gdk_pixbuf_scale( - pixbuf.handle, // src, - destSizePixbuf, - 0, - 0, - destWidth, destHeight, - offset_x, offset_y, - scale_x, scale_y, - GDKPIXBUF.GDK_INTERP_BILINEAR); - pixbuf.handle = destSizePixbuf; - } - - /* Paint it */ - GDKPIXBUF.gdk_pixbuf_render_to_drawable_alpha( - pixbuf.handle, - data.drawable, - 0, 0, - destX, destY, - destWidth, destHeight, - GDKPIXBUF.GDK_PIXBUF_ALPHA_BILEVEL, 128, - GDKPIXBUF.GDK_RGB_DITHER_NORMAL, - 0, 0 - ); -} - -/** - * 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) { - OS.gdk_draw_line (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 (width < 0) { - x = x + width; - width = -width; - } - if (height < 0) { - y = y + height; - height = -height; - } - OS.gdk_draw_arc(data.drawable, handle, 0, x, y, width, height, 0, 23040); -} -/** - * 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 (pointArray == null) error(SWT.ERROR_NULL_ARGUMENT); - short[] points = new short[pointArray.length]; - for (int i = 0; i < pointArray.length; i++) { - points[i] = (short)pointArray[i]; - } - OS.gdk_draw_polygon(data.drawable, handle, 0, points, points.length / 2); -} -/** - * 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 (pointArray == null) error(SWT.ERROR_NULL_ARGUMENT); - short[] points = new short[pointArray.length]; - for (int i = 0; i < pointArray.length; i++) { - points[i] = (short)pointArray[i]; - } - OS.gdk_draw_lines(data.drawable, handle, points, points.length / 2); -} -/** - * 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 (width < 0) { - x = x + width; - width = -width; - } - if (height < 0) { - y = y + height; - height = -height; - } - OS.gdk_draw_rectangle(data.drawable, handle, 0, 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) 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. - * - * @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 horizontal diameter of the arc at the four corners - * @param arcHeight the vertical diameter of the arc at the four corners - * - * @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) { - 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 naw2 = Compatibility.floor(naw, 2); - int nah2 = Compatibility.floor(nah, 2); - - OS.gdk_draw_arc(data.drawable, handle, 0, nx, ny, naw, nah, 5760, 5760); - OS.gdk_draw_arc(data.drawable, handle, 0, nx, ny + nh - nah, naw, nah, 11520, 5760); - OS.gdk_draw_arc(data.drawable, handle, 0, nx + nw - naw, ny + nh - nah, naw, nah, 17280, 5760); - OS.gdk_draw_arc(data.drawable, handle, 0, nx + nw - naw, ny, naw, nah, 0, 5760); - OS.gdk_draw_line(data.drawable, handle, nx + naw2, ny, nx + nw - naw2, ny); - OS.gdk_draw_line(data.drawable, handle, nx,ny + nah2, nx, ny + nh - nah2); - OS.gdk_draw_line(data.drawable, handle, nx + naw2, ny + nh, nx + nw - naw2, ny + nh); - OS.gdk_draw_line(data.drawable, handle, nx + nw, ny + nah2, nx + nw, ny + nh - nah2); -} -/** - * 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 (string == null) error(SWT.ERROR_NULL_ARGUMENT); - byte[] buffer = Converter.wcsToMbcs(null, string, true); - byte[] buffer1 = Converter.wcsToMbcs(null, "Y", true); - int[] unused = new int[1]; - int[] width = new int[1]; - int[] ascent = new int[1]; - int[] average_ascent = new int [1]; - int fontHandle = _getGCFont(); - OS.gdk_string_extents(fontHandle, buffer, unused, unused, width, ascent, unused); - OS.gdk_string_extents(fontHandle, buffer1, unused, unused, unused, average_ascent, unused); - if (ascent[0]<average_ascent[0]) ascent[0] = average_ascent[0]; - if (!isTransparent) { - int height = OS.gdk_string_height(fontHandle, buffer); - GdkGCValues values = new GdkGCValues(); - OS.gdk_gc_get_values(handle, values); - GdkColor color = new GdkColor(); - color.pixel = values.background_pixel; - color.red = values.background_red; - color.green = values.background_green; - color.blue = values.background_blue; - OS.gdk_gc_set_foreground(handle, color); - OS.gdk_draw_rectangle(data.drawable, handle, 1, x, y, width[0], height); - color.pixel = values.foreground_pixel; - color.red = values.foreground_red; - color.green = values.foreground_green; - color.blue = values.foreground_blue; - OS.gdk_gc_set_foreground(handle, color); - } - OS.gdk_draw_string(data.drawable, fontHandle, handle, x, y + ascent[0], buffer); -} -/** - * 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, false); -} -/** - * 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) { - if (string == null) error(SWT.ERROR_NULL_ARGUMENT); - byte[] buffer = Converter.wcsToMbcs(null, string, true); - byte[] buffer1 = Converter.wcsToMbcs(null, "Y", true); - int fontHandle = _getGCFont(); - int[] unused = new int[1]; - int[] width = new int[1]; - int[] ascent = new int[1]; - int[] average_ascent = new int [1]; - OS.gdk_string_extents(fontHandle, buffer, unused, unused, width, ascent, unused); - OS.gdk_string_extents(fontHandle, buffer1, unused, unused, unused, average_ascent, unused); - if (ascent[0]<average_ascent[0]) ascent[0] = average_ascent[0]; - if (!isTransparent) { - int height = OS.gdk_string_height(fontHandle, buffer); - GdkGCValues values = new GdkGCValues(); - OS.gdk_gc_get_values(handle, values); - GdkColor color = new GdkColor(); - color.pixel = values.background_pixel; - color.red = values.background_red; - color.green = values.background_green; - color.blue = values.background_blue; - OS.gdk_gc_set_foreground(handle, color); - OS.gdk_draw_rectangle(data.drawable, handle, 1, x, y, width[0], height); - color.pixel = values.foreground_pixel; - color.red = values.foreground_red; - color.green = values.foreground_green; - color.blue = values.foreground_blue; - OS.gdk_gc_set_foreground(handle, color); - } - OS.gdk_draw_string(data.drawable, fontHandle, handle, x, y + ascent[0], buffer); -} - -/** - * 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 specifing 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) { - // NOT IMPLEMENTED - drawText(string, x, y, (flags & SWT.DRAW_TRANSPARENT) != 0); -} - -/** - * 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 IllegalArgumentException <ul> - * <li>ERROR_INVALID_ARGUMENT - if any of the width, height or endAngle is zero.</li> - * </ul> - * @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 endAngle) { - if (width < 0) { - x = x + width; - width = -width; - } - if (height < 0) { - y = y + height; - height = -height; - } - if (width == 0 || height == 0 || endAngle == 0) { - error(SWT.ERROR_INVALID_ARGUMENT); - } - GdkGCValues values = new GdkGCValues(); - OS.gdk_gc_get_values(handle, values); - GdkColor color = new GdkColor(); - color.pixel = values.background_pixel; - color.red = values.background_red; - color.green = values.background_green; - color.blue = values.background_blue; - OS.gdk_gc_set_foreground(handle, color); - OS.gdk_draw_arc(data.drawable, handle, 1, x, y, width, height, startAngle * 64, endAngle * 64); - color.pixel = values.foreground_pixel; - color.red = values.foreground_red; - color.green = values.foreground_green; - color.blue = values.foreground_blue; - OS.gdk_gc_set_foreground(handle, color); -} - -/** - * 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 - */ -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; - - GdkGCValues values = new GdkGCValues(); - OS.gdk_gc_get_values(handle, values); - GdkColor foregroundGdkColor = new GdkColor(); - - RGB backgroundRGB, foregroundRGB; - backgroundRGB = Color.gtk_getRGBIntensities(_getBackgroundGdkColor()); - foregroundRGB = Color.gtk_getRGBIntensities(_getForegroundGdkColor()); - - 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 == toRGB) { - fillRectangle(x, y, width, height); - return; - } - ImageData.fillGradientRectangle(this, Display.getCurrent(), - x, y, width, height, vertical, fromRGB, toRGB, - 8, 8, 8); -} - -/** - * 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 (width < 0) { - x = x + width; - width = -width; - } - if (height < 0) { - y = y + height; - height = -height; - } - GdkGCValues values = new GdkGCValues(); - OS.gdk_gc_get_values(handle, values); - GdkColor color = new GdkColor(); - color.pixel = values.background_pixel; - color.red = values.background_red; - color.green = values.background_green; - color.blue = values.background_blue; - OS.gdk_gc_set_foreground(handle, color); - OS.gdk_draw_arc(data.drawable, handle, 1, x, y, width, height, 0, 23040); - color.pixel = values.foreground_pixel; - color.red = values.foreground_red; - color.green = values.foreground_green; - color.blue = values.foreground_blue; - OS.gdk_gc_set_foreground(handle, color); -} -/** - * 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 (pointArray == null) error(SWT.ERROR_NULL_ARGUMENT); - short[] points = new short[pointArray.length]; - for (int i = 0; i < pointArray.length; i++) { - points[i] = (short)pointArray[i]; - } - GdkGCValues values = new GdkGCValues(); - OS.gdk_gc_get_values(handle, values); - GdkColor color = new GdkColor(); - color.pixel = values.background_pixel; - color.red = values.background_red; - color.green = values.background_green; - color.blue = values.background_blue; - OS.gdk_gc_set_foreground(handle, color); - OS.gdk_draw_polygon(data.drawable, handle, 1, points, points.length / 2); - color.pixel = values.foreground_pixel; - color.red = values.foreground_red; - color.green = values.foreground_green; - color.blue = values.foreground_blue; - OS.gdk_gc_set_foreground(handle, color); -} -/** - * 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 - */ -public void fillRectangle(int x, int y, int width, int height) { - if (width < 0) { - x = x + width; - width = -width; - } - if (height < 0) { - y = y + height; - height = -height; - } - - GdkGCValues values = new GdkGCValues(); - OS.gdk_gc_get_values(handle, values); - GdkColor color = new GdkColor(); - color.pixel = values.background_pixel; - color.red = values.background_red; - color.green = values.background_green; - color.blue = values.background_blue; - OS.gdk_gc_set_foreground(handle, color); - OS.gdk_draw_rectangle(data.drawable, handle, 1, x, y, width, height); - color.pixel = values.foreground_pixel; - color.red = values.foreground_red; - color.green = values.foreground_green; - color.blue = values.foreground_blue; - OS.gdk_gc_set_foreground(handle, color); -} -/** - * Fills the interior of the specified rectangle, using the receiver's - * background color. - * - * @param rectangle 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 - */ -public void fillRectangle(Rectangle rect) { - if (rect == null) 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 horizontal diameter of the arc at the four corners - * @param arcHeight the vertical diameter of the arc at the four corners - * - * @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) { - 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; - - naw = Math.min(naw,nw); - nah = Math.min(nah, nh); - - int naw2 = Compatibility.round(naw, 2); - int nah2 = Compatibility.round(nah, 2); - - GdkGCValues values = new GdkGCValues(); - OS.gdk_gc_get_values(handle, values); - GdkColor color = new GdkColor(); - color.pixel = values.background_pixel; - color.red = values.background_red; - color.green = values.background_green; - color.blue = values.background_blue; - OS.gdk_gc_set_foreground(handle, color); - OS.gdk_draw_arc(data.drawable, handle, 1, nx, ny, naw, nah, 5760, 5760); - OS.gdk_draw_arc(data.drawable, handle, 1, nx, ny + nh - nah, naw, nah, 11520, 5760); - OS.gdk_draw_arc(data.drawable, handle, 1, nx + nw - naw, ny + nh - nah, naw, nah, 17280, 5760); - OS.gdk_draw_arc(data.drawable, handle, 1, nx + nw - naw, ny, naw, nah, 0, 5760); - OS.gdk_draw_rectangle(data.drawable, handle, 1, nx + naw2, ny, nw - naw, nh); - OS.gdk_draw_rectangle(data.drawable, handle, 1, nx, ny + nah2, naw2, nh - nah); - OS.gdk_draw_rectangle(data.drawable, handle, 1, nx + nw - (naw / 2), ny + nah2, naw2, nh -nah); - color.pixel = values.foreground_pixel; - color.red = values.foreground_red; - color.green = values.foreground_green; - color.blue = values.foreground_blue; - OS.gdk_gc_set_foreground(handle, color); -} - -/** - * 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 - */ -/* - * === As yet unclassified === - */ - -public boolean equals(Object object) { - return (object == this) || ((object instanceof GC) && (handle == ((GC)object).handle)); -} -/** - * Returns an integer hash code for the receiver. Any two - * objects which 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 error(int code) { - throw new SWTError(code); -} -/** - * 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; -} -/** - * Disposes of the operating system resources associated with - * the graphics context. Applications must dispose of all GCs - * which they allocate. - */ -public void dispose() { - if (handle == 0) return; - - /* Free resources */ - int clipRgn = data.clipRgn; - if (clipRgn != 0) OS.gdk_region_destroy(clipRgn); - Image image = data.image; - if (image != null) image.memGC = null; - - /* Dispose the GC */ - if(drawable == null) - OS.gdk_gc_unref(handle); - else - drawable.internal_dispose_GC(handle, data); - - data.drawable = // data.colormap = data.fontList = - data.clipRgn = data.renderTable = 0; - drawable = null; - data.image = null; - data = null; - handle = 0; - -} - - -/** - * 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 + "}"; -} - -/** - * 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 specifing 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) { - //NOT IMPLEMENTED - return textExtent(string); -} - -} |