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Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/graphics/Image.java')
| -rwxr-xr-x | bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/graphics/Image.java | 1441 |
1 files changed, 0 insertions, 1441 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/graphics/Image.java b/bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/graphics/Image.java deleted file mode 100755 index 7c5eb12cbf..0000000000 --- a/bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/graphics/Image.java +++ /dev/null @@ -1,1441 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2000, 2006 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.cairo.*; -import org.eclipse.swt.internal.motif.*; -import org.eclipse.swt.*; -import java.io.*; - -/** - * Instances of this class are graphics which have been prepared - * for display on a specific device. That is, they are ready - * to paint using methods such as <code>GC.drawImage()</code> - * and display on widgets with, for example, <code>Button.setImage()</code>. - * <p> - * If loaded from a file format that supports it, an - * <code>Image</code> may have transparency, meaning that certain - * pixels are specified as being transparent when drawn. Examples - * of file formats that support transparency are GIF and PNG. - * </p><p> - * There are two primary ways to use <code>Images</code>. - * The first is to load a graphic file from disk and create an - * <code>Image</code> from it. This is done using an <code>Image</code> - * constructor, for example: - * <pre> - * Image i = new Image(device, "C:\\graphic.bmp"); - * </pre> - * A graphic file may contain a color table specifying which - * colors the image was intended to possess. In the above example, - * these colors will be mapped to the closest available color in - * SWT. It is possible to get more control over the mapping of - * colors as the image is being created, using code of the form: - * <pre> - * ImageData data = new ImageData("C:\\graphic.bmp"); - * RGB[] rgbs = data.getRGBs(); - * // At this point, rgbs contains specifications of all - * // the colors contained within this image. You may - * // allocate as many of these colors as you wish by - * // using the Color constructor Color(RGB), then - * // create the image: - * Image i = new Image(device, data); - * </pre> - * <p> - * Applications which require even greater control over the image - * loading process should use the support provided in class - * <code>ImageLoader</code>. - * </p><p> - * Application code must explicitly invoke the <code>Image.dispose()</code> - * method to release the operating system resources managed by each instance - * when those instances are no longer required. - * </p> - * - * @see Color - * @see ImageData - * @see ImageLoader - */ -public final class Image extends Resource implements Drawable { - /** - * specifies whether the receiver is a bitmap or an icon - * (one of <code>SWT.BITMAP</code>, <code>SWT.ICON</code>) - * <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 type; - - /** - * The handle to the OS pixmap resource. - * (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 pixmap; - - /** - * The handle to the OS mask resource. - * (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 mask; - - int /*long*/ surface; - - /** - * specifies the transparent pixel - */ - int transparentPixel = -1; - - /** - * The GC the image is currently selected in. - */ - GC memGC; - - /** - * The alpha data of the image. - */ - byte[] alphaData; - - /** - * The global alpha value to be used for every pixel. - */ - int alpha = -1; - - /** - * The width of the image. - */ - int width = -1; - - /** - * The height of the image. - */ - int height = -1; - - /** - * Specifies the default scanline padding. - */ - static final int DEFAULT_SCANLINE_PAD = 4; - -Image() { -} -/** - * Constructs an empty instance of this class with the - * specified width and height. The result may be drawn upon - * by creating a GC and using any of its drawing operations, - * as shown in the following example: - * <pre> - * Image i = new Image(device, width, height); - * GC gc = new GC(i); - * gc.drawRectangle(0, 0, 50, 50); - * gc.dispose(); - * </pre> - * <p> - * Note: Some platforms may have a limitation on the size - * of image that can be created (size depends on width, height, - * and depth). For example, Windows 95, 98, and ME do not allow - * images larger than 16M. - * </p> - * - * @param device the device on which to create the image - * @param width the width of the new image - * @param height the height of the new image - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> - * <li>ERROR_INVALID_ARGUMENT - if either the width or height is negative or zero</li> - * </ul> - * @exception SWTError <ul> - * <li>ERROR_NO_HANDLES if a handle could not be obtained for image creation</li> - * </ul> - */ -public Image(Device device, int width, int height) { - if (device == null) device = Device.getDevice(); - if (device == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); - init(device, width, height); - if (device.tracking) device.new_Object(this); -} -/** - * Constructs a new instance of this class based on the - * provided image, with an appearance that varies depending - * on the value of the flag. The possible flag values are: - * <dl> - * <dt><b>IMAGE_COPY</b></dt> - * <dd>the result is an identical copy of srcImage</dd> - * <dt><b>IMAGE_DISABLE</b></dt> - * <dd>the result is a copy of srcImage which has a <em>disabled</em> look</dd> - * <dt><b>IMAGE_GRAY</b></dt> - * <dd>the result is a copy of srcImage which has a <em>gray scale</em> look</dd> - * </dl> - * - * @param device the device on which to create the image - * @param srcImage the image to use as the source - * @param flag the style, either <code>IMAGE_COPY</code>, <code>IMAGE_DISABLE</code> or <code>IMAGE_GRAY</code> - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> - * <li>ERROR_NULL_ARGUMENT - if srcImage is null</li> - * <li>ERROR_INVALID_ARGUMENT - if the flag is not one of <code>IMAGE_COPY</code>, <code>IMAGE_DISABLE</code> or <code>IMAGE_GRAY</code></li> - * <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_INVALID_IMAGE - if the image is not a bitmap or an icon, or is otherwise in an invalid state</li> - * <li>ERROR_UNSUPPORTED_DEPTH - if the depth of the image is not supported</li> - * </ul> - * @exception SWTError <ul> - * <li>ERROR_NO_HANDLES if a handle could not be obtained for image creation</li> - * </ul> - */ -public Image(Device device, Image srcImage, int flag) { - if (device == null) device = Device.getDevice(); - if (device == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); - this.device = device; - if (srcImage == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); - if (srcImage.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); - int xDisplay = device.xDisplay; - this.type = srcImage.type; - this.mask = 0; - int[] unused = new int[1]; - int[] w = new int[1]; - int[] h = new int[1]; - OS.XGetGeometry(xDisplay, srcImage.pixmap, unused, unused, unused, w, h, unused, unused); - int width = w[0]; - int height = h[0]; - int drawable = OS.XDefaultRootWindow(xDisplay); - /* Don't create the mask here if flag is SWT.IMAGE_GRAY. See below.*/ - if (flag != SWT.IMAGE_GRAY && ((srcImage.type == SWT.ICON && srcImage.mask != 0) || srcImage.transparentPixel != -1)) { - /* Generate the mask if necessary. */ - if (srcImage.transparentPixel != -1) srcImage.createMask(); - int mask = OS.XCreatePixmap(xDisplay, drawable, width, height, 1); - int gc = OS.XCreateGC(xDisplay, mask, 0, null); - OS.XCopyArea(xDisplay, srcImage.mask, mask, gc, 0, 0, width, height, 0, 0); - OS.XFreeGC(xDisplay, gc); - this.mask = mask; - /* Destroy the image mask if the there is a GC created on the image */ - if (srcImage.transparentPixel != -1 && srcImage.memGC != null) srcImage.destroyMask(); - } - switch (flag) { - case SWT.IMAGE_COPY: - int[] depth = new int[1]; - OS.XGetGeometry(xDisplay, srcImage.pixmap, unused, unused, unused, unused, unused, unused, depth); - int pixmap = OS.XCreatePixmap(xDisplay, drawable, width, height, depth[0]); - int gc = OS.XCreateGC(xDisplay, pixmap, 0, null); - OS.XCopyArea(xDisplay, srcImage.pixmap, pixmap, gc, 0, 0, width, height, 0, 0); - OS.XFreeGC(xDisplay, gc); - this.pixmap = pixmap; - transparentPixel = srcImage.transparentPixel; - alpha = srcImage.alpha; - if (srcImage.alphaData != null) { - alphaData = new byte[srcImage.alphaData.length]; - System.arraycopy(srcImage.alphaData, 0, alphaData, 0, alphaData.length); - } - if (device.tracking) device.new_Object(this); - return; - case SWT.IMAGE_DISABLE: - /* Get src image data */ - XImage srcXImage = new XImage(); - int srcXImagePtr = OS.XGetImage(xDisplay, srcImage.pixmap, 0, 0, width, height, OS.AllPlanes, OS.ZPixmap); - OS.memmove(srcXImage, srcXImagePtr, XImage.sizeof); - byte[] srcData = new byte[srcXImage.bytes_per_line * srcXImage.height]; - OS.memmove(srcData, srcXImage.data, srcData.length); - /* Create destination image */ - int destPixmap = OS.XCreatePixmap(xDisplay, drawable, width, height, srcXImage.depth); - int visualPtr = OS.XDefaultVisual(xDisplay, OS.XDefaultScreen(xDisplay)); - int screenDepth = OS.XDefaultDepthOfScreen(OS.XDefaultScreenOfDisplay(xDisplay)); - int destXImagePtr = OS.XCreateImage(xDisplay, visualPtr, screenDepth, OS.ZPixmap, 0, 0, width, height, srcXImage.bitmap_pad, 0); - XImage destXImage = new XImage(); - OS.memmove(destXImage, destXImagePtr, XImage.sizeof); - int bufSize = destXImage.bytes_per_line * destXImage.height; - int bufPtr = OS.XtMalloc(bufSize); - destXImage.data = bufPtr; - OS.memmove(destXImagePtr, destXImage, XImage.sizeof); - byte[] destData = new byte[bufSize]; - /* Find the colors to map to */ - Color zeroColor = device.getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW); - Color oneColor = device.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND); - int zeroPixel = zeroColor.handle.pixel; - int onePixel = oneColor.handle.pixel; - switch (srcXImage.bits_per_pixel) { - case 1: - /* - * Nothing we can reasonably do here except copy - * the bitmap; we can't make it a higher color depth. - * Short-circuit the rest of the code and return. - */ - gc = OS.XCreateGC(xDisplay, drawable, 0, null); - pixmap = OS.XCreatePixmap(xDisplay, drawable, width, height, 1); - OS.XCopyArea(xDisplay, srcImage.pixmap, pixmap, gc, 0, 0, width, height, 0, 0); - OS.XDestroyImage(srcXImagePtr); - OS.XDestroyImage(destXImagePtr); - OS.XFreeGC(xDisplay, gc); - return; - case 4: - SWT.error(SWT.ERROR_NOT_IMPLEMENTED); - break; - case 8: - int index = 0; - int srcPixel, r, g, b; - XColor[] colors = new XColor[256]; - int colormap = OS.XDefaultColormap(xDisplay, OS.XDefaultScreen(xDisplay)); - for (int y = 0; y < srcXImage.height; y++) { - for (int x = 0; x < srcXImage.bytes_per_line; x++) { - srcPixel = srcData[index + x] & 0xFF; - /* Get the RGB values of srcPixel */ - if (colors[srcPixel] == null) { - XColor color = new XColor(); - color.pixel = srcPixel; - OS.XQueryColor(xDisplay, colormap, color); - colors[srcPixel] = color; - } - XColor xColor = colors[srcPixel]; - r = (xColor.red >> 8) & 0xFF; - g = (xColor.green >> 8) & 0xFF; - b = (xColor.blue >> 8) & 0xFF; - /* See if the rgb maps to 0 or 1 */ - if ((r * r + g * g + b * b) < 98304) { - /* Map down to 0 */ - destData[index + x] = (byte)zeroPixel; - } else { - /* Map up to 1 */ - destData[index + x] = (byte)onePixel; - } - } - index += srcXImage.bytes_per_line; - } - break; - case 16: - index = 0; - /* Get masks */ - Visual visual = new Visual(); - OS.memmove(visual, visualPtr, Visual.sizeof); - int redMask = visual.red_mask; - int greenMask = visual.green_mask; - int blueMask = visual.blue_mask; - /* Calculate mask shifts */ - int[] shift = new int[1]; - getOffsetForMask(16, redMask, srcXImage.byte_order, shift); - int rShift = 24 - shift[0]; - getOffsetForMask(16, greenMask, srcXImage.byte_order, shift); - int gShift = 24 - shift[0]; - getOffsetForMask(16, blueMask, srcXImage.byte_order, shift); - int bShift = 24 - shift[0]; - byte zeroLow = (byte)(zeroPixel & 0xFF); - byte zeroHigh = (byte)((zeroPixel >> 8) & 0xFF); - byte oneLow = (byte)(onePixel & 0xFF); - byte oneHigh = (byte)((onePixel >> 8) & 0xFF); - for (int y = 0; y < srcXImage.height; y++) { - int xIndex = 0; - for (int x = 0; x < srcXImage.bytes_per_line; x += 2) { - srcPixel = ((srcData[index + xIndex + 1] & 0xFF) << 8) | (srcData[index + xIndex] & 0xFF); - r = (srcPixel & redMask) << rShift >> 16; - g = (srcPixel & greenMask) << gShift >> 16; - b = (srcPixel & blueMask) << bShift >> 16; - /* See if the rgb maps to 0 or 1 */ - if ((r * r + g * g + b * b) < 98304) { - /* Map down to 0 */ - destData[index + xIndex] = zeroLow; - destData[index + xIndex + 1] = zeroHigh; - } else { - /* Map up to 1 */ - destData[index + xIndex] = oneLow; - destData[index + xIndex + 1] = oneHigh; - } - xIndex += srcXImage.bits_per_pixel / 8; - } - index += srcXImage.bytes_per_line; - } - break; - case 24: - case 32: - index = 0; - /* Get masks */ - visual = new Visual(); - OS.memmove(visual, visualPtr, Visual.sizeof); - redMask = visual.red_mask; - greenMask = visual.green_mask; - blueMask = visual.blue_mask; - /* Calculate mask shifts */ - shift = new int[1]; - getOffsetForMask(srcXImage.bits_per_pixel, redMask, srcXImage.byte_order, shift); - rShift = shift[0]; - getOffsetForMask(srcXImage.bits_per_pixel, greenMask, srcXImage.byte_order, shift); - gShift = shift[0]; - getOffsetForMask(srcXImage.bits_per_pixel, blueMask, srcXImage.byte_order, shift); - bShift = shift[0]; - byte zeroR = (byte)zeroColor.getRed(); - byte zeroG = (byte)zeroColor.getGreen(); - byte zeroB = (byte)zeroColor.getBlue(); - byte oneR = (byte)oneColor.getRed(); - byte oneG = (byte)oneColor.getGreen(); - byte oneB = (byte)oneColor.getBlue(); - for (int y = 0; y < srcXImage.height; y++) { - int xIndex = 0; - for (int x = 0; x < srcXImage.width; x++) { - r = srcData[index + xIndex + rShift] & 0xFF; - g = srcData[index + xIndex + gShift] & 0xFF; - b = srcData[index + xIndex + bShift] & 0xFF; - /* See if the rgb maps to 0 or 1 */ - if ((r * r + g * g + b * b) < 98304) { - /* Map down to 0 */ - destData[index + xIndex + rShift] = zeroR; - destData[index + xIndex + gShift] = zeroG; - destData[index + xIndex + bShift] = zeroB; - } else { - /* Map up to 1 */ - destData[index + xIndex + rShift] = oneR; - destData[index + xIndex + gShift] = oneG; - destData[index + xIndex + bShift] = oneB; - } - xIndex += destXImage.bits_per_pixel / 8; - } - index += srcXImage.bytes_per_line; - } - break; - default: - SWT.error(SWT.ERROR_INVALID_IMAGE); - } - OS.memmove(destXImage.data, destData, destData.length); - gc = OS.XCreateGC(xDisplay, destPixmap, 0, null); - OS.XPutImage(xDisplay, destPixmap, gc, destXImagePtr, 0, 0, 0, 0, width, height); - OS.XDestroyImage(destXImagePtr); - OS.XDestroyImage(srcXImagePtr); - OS.XFreeGC(xDisplay, gc); - alpha = srcImage.alpha; - if (srcImage.alphaData != null) { - alphaData = new byte[srcImage.alphaData.length]; - System.arraycopy(srcImage.alphaData, 0, alphaData, 0, alphaData.length); - } - this.pixmap = destPixmap; - if (device.tracking) device.new_Object(this); - return; - case SWT.IMAGE_GRAY: - ImageData data = srcImage.getImageData(); - PaletteData palette = data.palette; - ImageData newData = data; - if (!palette.isDirect) { - /* Convert the palette entries to gray. */ - RGB [] rgbs = palette.getRGBs(); - for (int i=0; i<rgbs.length; i++) { - if (data.transparentPixel != i) { - RGB color = rgbs [i]; - int red = color.red; - int green = color.green; - int blue = color.blue; - int intensity = (red+red+green+green+green+green+green+blue) >> 3; - color.red = color.green = color.blue = intensity; - } - } - newData.palette = new PaletteData(rgbs); - } else { - /* Create a 8 bit depth image data with a gray palette. */ - RGB[] rgbs = new RGB[256]; - for (int i=0; i<rgbs.length; i++) { - rgbs[i] = new RGB(i, i, i); - } - newData = new ImageData(width, height, 8, new PaletteData(rgbs)); - newData.alpha = data.alpha; - newData.alphaData = data.alphaData; - newData.maskData = data.maskData; - newData.maskPad = data.maskPad; - if (data.transparentPixel != -1) newData.transparentPixel = 254; - - /* Convert the pixels. */ - int[] scanline = new int[width]; - int redMask = palette.redMask; - int greenMask = palette.greenMask; - int blueMask = palette.blueMask; - int redShift = palette.redShift; - int greenShift = palette.greenShift; - int blueShift = palette.blueShift; - for (int y=0; y<height; y++) { - int offset = y * newData.bytesPerLine; - data.getPixels(0, y, width, scanline, 0); - for (int x=0; x<width; x++) { - int pixel = scanline[x]; - if (pixel != data.transparentPixel) { - int red = pixel & redMask; - red = (redShift < 0) ? red >>> -redShift : red << redShift; - int green = pixel & greenMask; - green = (greenShift < 0) ? green >>> -greenShift : green << greenShift; - int blue = pixel & blueMask; - blue = (blueShift < 0) ? blue >>> -blueShift : blue << blueShift; - int intensity = (red+red+green+green+green+green+green+blue) >> 3; - if (newData.transparentPixel == intensity) intensity = 255; - newData.data[offset] = (byte)intensity; - } else { - newData.data[offset] = (byte)254; - } - offset++; - } - } - } - init (device, newData); - break; - default: - SWT.error(SWT.ERROR_INVALID_ARGUMENT); - } - if (device.tracking) device.new_Object(this); -} -/** - * Constructs an empty instance of this class with the - * width and height of the specified rectangle. The result - * may be drawn upon by creating a GC and using any of its - * drawing operations, as shown in the following example: - * <pre> - * Image i = new Image(device, boundsRectangle); - * GC gc = new GC(i); - * gc.drawRectangle(0, 0, 50, 50); - * gc.dispose(); - * </pre> - * <p> - * Note: Some platforms may have a limitation on the size - * of image that can be created (size depends on width, height, - * and depth). For example, Windows 95, 98, and ME do not allow - * images larger than 16M. - * </p> - * - * @param device the device on which to create the image - * @param bounds a rectangle specifying the image's width and height (must not be null) - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> - * <li>ERROR_NULL_ARGUMENT - if the bounds rectangle is null</li> - * <li>ERROR_INVALID_ARGUMENT - if either the rectangle's width or height is negative</li> - * </ul> - * @exception SWTError <ul> - * <li>ERROR_NO_HANDLES if a handle could not be obtained for image creation</li> - * </ul> - */ -public Image(Device device, Rectangle bounds) { - if (device == null) device = Device.getDevice(); - if (device == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); - if (bounds == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); - init(device, bounds.width, bounds.height); - if (device.tracking) device.new_Object(this); -} -/** - * Constructs an instance of this class from the given - * <code>ImageData</code>. - * - * @param device the device on which to create the image - * @param data the image data to create the image from (must not be null) - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> - * <li>ERROR_NULL_ARGUMENT - if the image data is null</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_UNSUPPORTED_DEPTH - if the depth of the ImageData is not supported</li> - * </ul> - * @exception SWTError <ul> - * <li>ERROR_NO_HANDLES if a handle could not be obtained for image creation</li> - * </ul> - */ -public Image(Device device, ImageData image) { - if (device == null) device = Device.getDevice(); - if (device == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); - init(device, image); - if (device.tracking) device.new_Object(this); -} -/** - * Constructs an instance of this class, whose type is - * <code>SWT.ICON</code>, from the two given <code>ImageData</code> - * objects. The two images must be the same size. Pixel transparency - * in either image will be ignored. - * <p> - * The mask image should contain white wherever the icon is to be visible, - * and black wherever the icon is to be transparent. In addition, - * the source image should contain black wherever the icon is to be - * transparent. - * </p> - * - * @param device the device on which to create the icon - * @param source the color data for the icon - * @param mask the mask data for the icon - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> - * <li>ERROR_NULL_ARGUMENT - if either the source or mask is null </li> - * <li>ERROR_INVALID_ARGUMENT - if source and mask are different sizes</li> - * </ul> - * @exception SWTError <ul> - * <li>ERROR_NO_HANDLES if a handle could not be obtained for image creation</li> - * </ul> - */ -public Image(Device device, ImageData source, ImageData mask) { - if (device == null) device = Device.getDevice(); - if (device == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); - if (source == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); - if (mask == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); - if (source.width != mask.width || source.height != mask.height) { - SWT.error(SWT.ERROR_INVALID_ARGUMENT); - } - mask = ImageData.convertMask(mask); - ImageData image = new ImageData(source.width, source.height, source.depth, source.palette, source.scanlinePad, source.data); - image.maskPad = mask.scanlinePad; - image.maskData = mask.data; - init(device, image); - if (device.tracking) device.new_Object(this); -} -/** - * Constructs an instance of this class by loading its representation - * from the specified input stream. Throws an error if an error - * occurs while loading the image, or if the result is an image - * of an unsupported type. Application code is still responsible - * for closing the input stream. - * <p> - * This constructor is provided for convenience when loading a single - * image only. If the stream contains multiple images, only the first - * one will be loaded. To load multiple images, use - * <code>ImageLoader.load()</code>. - * </p><p> - * This constructor may be used to load a resource as follows: - * </p> - * <pre> - * static Image loadImage (Display display, Class clazz, String string) { - * InputStream stream = clazz.getResourceAsStream (string); - * if (stream == null) return null; - * Image image = null; - * try { - * image = new Image (display, stream); - * } catch (SWTException ex) { - * } finally { - * try { - * stream.close (); - * } catch (IOException ex) {} - * } - * return image; - * } - * </pre> - * - * @param device the device on which to create the image - * @param stream the input stream to load the image from - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> - * <li>ERROR_NULL_ARGUMENT - if the stream is null</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_IO - if an IO error occurs while reading from the stream</li> - * <li>ERROR_INVALID_IMAGE - if the image stream contains invalid data </li> - * <li>ERROR_UNSUPPORTED_DEPTH - if the image stream describes an image with an unsupported depth</li> - * <li>ERROR_UNSUPPORTED_FORMAT - if the image stream contains an unrecognized format</li> - * </ul> - * @exception SWTError <ul> - * <li>ERROR_NO_HANDLES if a handle could not be obtained for image creation</li> - * </ul> - */ -public Image(Device device, InputStream stream) { - if (device == null) device = Device.getDevice(); - if (device == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); - init(device, new ImageData(stream)); - if (device.tracking) device.new_Object(this); -} -/** - * Constructs an instance of this class by loading its representation - * from the file with the specified name. Throws an error if an error - * occurs while loading the image, or if the result is an image - * of an unsupported type. - * <p> - * This constructor is provided for convenience when loading - * a single image only. If the specified file contains - * multiple images, only the first one will be used. - * - * @param device the device on which to create the image - * @param filename the name of the file to load the image from - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> - * <li>ERROR_NULL_ARGUMENT - if the file name is null</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_IO - if an IO error occurs while reading from the file</li> - * <li>ERROR_INVALID_IMAGE - if the image file contains invalid data </li> - * <li>ERROR_UNSUPPORTED_DEPTH - if the image file describes an image with an unsupported depth</li> - * <li>ERROR_UNSUPPORTED_FORMAT - if the image file contains an unrecognized format</li> - * </ul> - * @exception SWTError <ul> - * <li>ERROR_NO_HANDLES if a handle could not be obtained for image creation</li> - * </ul> - */ -public Image(Device device, String filename) { - if (device == null) device = Device.getDevice(); - if (device == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); - init(device, new ImageData(filename)); - if (device.tracking) device.new_Object(this); -} -/** - * Create the receiver's mask if necessary. - */ -void createMask() { - if (mask != 0) return; - int xDisplay = device.xDisplay; - int drawable = OS.XDefaultRootWindow(xDisplay); - int screenDepth = OS.XDefaultDepthOfScreen(OS.XDefaultScreenOfDisplay(xDisplay)); - int visual = OS.XDefaultVisual(xDisplay, OS.XDefaultScreen(xDisplay)); - ImageData maskImage = getImageData().getTransparencyMask(); - int maskPixmap = OS.XCreatePixmap(xDisplay, drawable, maskImage.width, maskImage.height, 1); - XColor[] xcolors = device.xcolors; - int gc = OS.XCreateGC(xDisplay, maskPixmap, 0, null); - Image.putImage(maskImage, 0, 0, maskImage.width, maskImage.height, 0, 0, maskImage.width, maskImage.height, xDisplay, visual, screenDepth, xcolors, null, true, maskPixmap, gc); - OS.XFreeGC(xDisplay, gc); - this.mask = maskPixmap; -} -void createSurface() { - if (surface != 0) return; - int [] unused = new int [1]; int [] width = new int [1]; int [] height = new int [1]; - OS.XGetGeometry (device.xDisplay, pixmap, unused, unused, unused, width, height, unused, unused); - int xDisplay = device.xDisplay; - int xDrawable = pixmap; - int xVisual = OS.XDefaultVisual(xDisplay, OS.XDefaultScreen(xDisplay)); - surface = Cairo.cairo_xlib_surface_create(xDisplay, xDrawable, xVisual, width[0], height[0]); -} -/** - * Disposes of the operating system resources associated with - * the image. Applications must dispose of all images which - * they allocate. - */ -public void dispose () { - if (pixmap == 0) return; - if (device.isDisposed()) return; - if (memGC != null) memGC.dispose(); - int xDisplay = device.xDisplay; - if (pixmap != 0) OS.XFreePixmap (xDisplay, pixmap); - if (mask != 0) OS.XFreePixmap (xDisplay, mask); - if (surface != 0) Cairo.cairo_surface_destroy(surface); - surface = pixmap = mask = 0; - memGC = null; - if (device.tracking) device.dispose_Object(this); - device = null; -} -/** - * Destroy the receiver's mask if it exists. - */ -void destroyMask() { - if (mask == 0) return; - OS.XFreePixmap (device.xDisplay, mask); - mask = 0; -} -/** - * 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 Image)) return false; - Image image = (Image)object; - return device == image.device && pixmap == image.pixmap; -} -/** - * Returns the color to which to map the transparent pixel, or null if - * the receiver has no transparent pixel. - * <p> - * There are certain uses of Images that do not support transparency - * (for example, setting an image into a button or label). In these cases, - * it may be desired to simulate transparency by using the background - * color of the widget to paint the transparent pixels of the image. - * Use this method to check which color will be used in these cases - * in place of transparency. This value may be set with setBackground(). - * <p> - * - * @return the background color of the image, or null if there is no transparency in the image - * - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public Color getBackground() { - if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - if (transparentPixel == -1) return null; - XColor xColor = new XColor(); - xColor.pixel = transparentPixel; - int xDisplay = device.xDisplay; - int colormap = OS.XDefaultColormap(xDisplay, OS.XDefaultScreen(xDisplay)); - OS.XQueryColor(xDisplay, colormap, xColor); - return Color.motif_new(device, xColor); -} -/** - * Returns the bounds of the receiver. The rectangle will always - * have x and y values of 0, and the width and height of the - * image. - * - * @return a rectangle specifying the image's bounds - * - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_INVALID_IMAGE - if the image is not a bitmap or an icon</li> - * </ul> - */ -public Rectangle getBounds () { - if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - if (width != -1 && height != -1) { - return new Rectangle(0, 0, width, height); - } - int [] unused = new int [1]; int [] w = new int [1]; int [] h = new int [1]; - OS.XGetGeometry (device.xDisplay, pixmap, unused, unused, unused, w, h, unused, unused); - return new Rectangle(0, 0, width = w [0], height = h [0]); -} -/** - * Returns an <code>ImageData</code> based on the receiver - * Modifications made to this <code>ImageData</code> will not - * affect the Image. - * - * @return an <code>ImageData</code> containing the image's data and attributes - * - * @exception SWTException <ul> - * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_INVALID_IMAGE - if the image is not a bitmap or an icon</li> - * </ul> - * - * @see ImageData - */ -public ImageData getImageData() { - if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - Rectangle srcBounds = getBounds(); - int width = srcBounds.width; - int height = srcBounds.height; - int xDisplay = device.xDisplay; - int xSrcImagePtr = OS.XGetImage(xDisplay, pixmap, 0, 0, width, height, OS.AllPlanes, OS.ZPixmap); - if (xSrcImagePtr == 0) SWT.error(SWT.ERROR_NO_HANDLES); - XImage xSrcImage = new XImage(); - OS.memmove(xSrcImage, xSrcImagePtr, XImage.sizeof); - - /* Get the data and palette of the source image. */ - PaletteData palette = null; - int length = xSrcImage.bytes_per_line * xSrcImage.height; - byte[] srcData = new byte[length]; - OS.memmove(srcData, xSrcImage.data, length); - switch (xSrcImage.bits_per_pixel) { - case 1: - palette = new PaletteData(new RGB[] { - new RGB(0, 0, 0), - new RGB(255, 255, 255) - }); - break; - case 4: - /* - * We currently don't run on a 4-bit server, so 4-bit images - * should not exist. - */ - SWT.error(SWT.ERROR_UNSUPPORTED_DEPTH); - case 8: - /* Normalize the pixels in the source image data (by making the - * pixel values sequential starting at pixel 0). Reserve normalized - * pixel 0 so that it maps to real pixel 0. This assumes pixel 0 is - * always used in the image. - */ - byte[] normPixel = new byte[256]; - for (int index = 0; index < normPixel.length; index++) { - normPixel[index] = 0; - } - int numPixels = 1; - int index = 0; - for (int y = 0; y < xSrcImage.height; y++) { - for (int x = 0; x < xSrcImage.bytes_per_line; x++) { - int srcPixel = srcData[index + x] & 0xFF; - if (srcPixel != 0 && normPixel[srcPixel] == 0) { - normPixel[srcPixel] = (byte)numPixels++; - } - srcData[index + x] = normPixel[srcPixel]; - } - index += xSrcImage.bytes_per_line; - } - - /* Create a palette with only the RGB values used in the image. */ - int colormap = OS.XDefaultColormap(xDisplay, OS.XDefaultScreen(xDisplay)); - RGB[] rgbs = new RGB[numPixels]; - XColor color = new XColor(); - for (int srcPixel = 0; srcPixel < normPixel.length; srcPixel++) { - /* If the pixel value was used in the image, get its RGB values. */ - if (srcPixel == 0 || normPixel[srcPixel] != 0) { - color.pixel = srcPixel; - OS.XQueryColor(xDisplay, colormap, color); - int rgbIndex = normPixel[srcPixel] & 0xFF; - rgbs[rgbIndex] = new RGB((color.red >> 8) & 0xFF, (color.green >> 8) & 0xFF, (color.blue >> 8) & 0xFF); - } - } - palette = new PaletteData(rgbs); - break; - case 16: - /* Byte swap the data if necessary */ - if (xSrcImage.byte_order == OS.MSBFirst) { - for (int i = 0; i < srcData.length; i += 2) { - byte b = srcData[i]; - srcData[i] = srcData[i+1]; - srcData[i+1] = b; - } - } - break; - case 24: - break; - case 32: - /* Byte swap the data if necessary */ - if (xSrcImage.byte_order == OS.LSBFirst) { - for (int i = 0; i < srcData.length; i += 4) { - byte b = srcData[i]; - srcData[i] = srcData[i+3]; - srcData[i+3] = b; - b = srcData[i+1]; - srcData[i+1] = srcData[i+2]; - srcData[i+2] = b; - } - } - break; - default: - SWT.error(SWT.ERROR_UNSUPPORTED_DEPTH); - } - if (palette == null) { - /* - * For some reason, the XImage does not have the mask information. - * We must get it from the defualt visual. - */ - int visual = OS.XDefaultVisual(xDisplay, OS.XDefaultScreen(xDisplay)); - Visual v = new Visual(); - OS.memmove(v, visual, Visual.sizeof); - palette = new PaletteData(v.red_mask, v.green_mask, v.blue_mask); - } - ImageData data = new ImageData(width, height, xSrcImage.bits_per_pixel, palette); - data.data = srcData; - if (transparentPixel == -1 && type == SWT.ICON && mask != 0) { - /* Get the icon mask data */ - int xMaskPtr = OS.XGetImage(xDisplay, mask, 0, 0, width, height, OS.AllPlanes, OS.ZPixmap); - if (xMaskPtr == 0) SWT.error(SWT.ERROR_NO_HANDLES); - XImage xMask = new XImage(); - OS.memmove(xMask, xMaskPtr, XImage.sizeof); - byte[] maskData = new byte[xMask.bytes_per_line * xMask.height]; - OS.memmove(maskData, xMask.data, maskData.length); - OS.XDestroyImage(xMaskPtr); - int maskPad = xMask.bitmap_pad / 8; - /* Make mask scanline pad equals to 2 */ - data.maskPad = 2; - maskData = ImageData.convertPad(maskData, width, height, 1, maskPad, data.maskPad); - /* Bit swap the mask data if necessary */ - if (xMask.bitmap_bit_order == OS.LSBFirst) { - for (int i = 0; i < maskData.length; i++) { - byte b = maskData[i]; - maskData[i] = (byte)(((b & 0x01) << 7) | ((b & 0x02) << 5) | - ((b & 0x04) << 3) | ((b & 0x08) << 1) | ((b & 0x10) >> 1) | - ((b & 0x20) >> 3) | ((b & 0x40) >> 5) | ((b & 0x80) >> 7)); - } - } - data.maskData = maskData; - } - data.transparentPixel = transparentPixel; - data.alpha = alpha; - if (alpha == -1 && alphaData != null) { - data.alphaData = new byte[alphaData.length]; - System.arraycopy(alphaData, 0, data.alphaData, 0, alphaData.length); - } - OS.XDestroyImage(xSrcImagePtr); - return data; -} -/** - * Get the offset for the given mask. - * - * For 24 and 32-bit masks, the offset indicates which byte holds the - * data for the given mask (indexed from 0). - * For example, in 0x0000FF00, the byte offset is 1. - * - * For 16-bit masks, the offset indicates which bit holds the most significant - * data for the given mask (indexed from 1). - * For example, in 0x7E0, the bit offset is 11. - * - * The different semantics are necessary because 24- and 32-bit images - * have their color components aligned on byte boundaries, and 16-bit images - * do not. - */ -static boolean getOffsetForMask(int bitspp, int mask, int byteOrder, int[] poff) { - if (bitspp % 8 != 0) { - return false; - } - switch (mask) { - /* 24-bit and 32-bit masks */ - case 0x000000FF: - poff[0] = 0; - break; - case 0x0000FF00: - poff[0] = 1; - break; - case 0x00FF0000: - poff[0] = 2; - break; - case 0xFF000000: - poff[0] = 3; - break; - /* 16-bit masks */ - case 0x001F: - poff[0] = 5; - break; - case 0x03E0: - poff[0] = 10; - break; - case 0x07E0: - poff[0] = 11; - break; - case 0x7C00: - poff[0] = 15; - break; - case 0xF800: - poff[0] = 16; - break; - default: - return false; - } - if (bitspp == 16) { - return true; - } - if (poff[0] >= bitspp / 8) { - return false; - } - if (byteOrder == OS.MSBFirst) { - poff[0] = (bitspp/8 - 1) - poff[0]; - } - return true; -} -/** - * 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 - * - * @see #equals - */ -public int hashCode () { - return pixmap; -} -void init(Device device, int width, int height) { - this.device = device; - if (width <= 0 || height <= 0) { - SWT.error(SWT.ERROR_INVALID_ARGUMENT); - } - - /* Create the pixmap */ - this.type = SWT.BITMAP; - int xDisplay = device.xDisplay; - int screen = OS.XDefaultScreenOfDisplay(xDisplay); - int depth = OS.XDefaultDepthOfScreen(screen); - int screenNum = OS.XDefaultScreen(xDisplay); - int drawable = OS.XDefaultRootWindow(xDisplay); - int pixmap = OS.XCreatePixmap(xDisplay, drawable, width, height, depth); - if (pixmap == 0) SWT.error(SWT.ERROR_NO_HANDLES); - /* Fill the bitmap with white */ - int xGC = OS.XCreateGC(xDisplay, drawable, 0, null); - OS.XSetForeground(xDisplay, xGC, OS.XWhitePixel(xDisplay, screenNum)); - OS.XFillRectangle(xDisplay, pixmap, xGC, 0, 0, width, height); - OS.XFreeGC(xDisplay, xGC); - this.pixmap = pixmap; -} -void init(Device device, ImageData image) { - this.device = device; - if (image == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); - int xDisplay = device.xDisplay; - int drawable = OS.XDefaultRootWindow(xDisplay); - int screenDepth = OS.XDefaultDepthOfScreen(OS.XDefaultScreenOfDisplay(xDisplay)); - int visual = OS.XDefaultVisual(xDisplay, OS.XDefaultScreen(xDisplay)); - int pixmap = OS.XCreatePixmap(xDisplay, drawable, image.width, image.height, screenDepth); - if (pixmap == 0) SWT.error(SWT.ERROR_NO_HANDLES); - int gc = OS.XCreateGC(xDisplay, pixmap, 0, null); - int[] transPixel = null; - if (image.transparentPixel != -1) transPixel = new int[]{image.transparentPixel}; - int error = putImage(image, 0, 0, image.width, image.height, 0, 0, image.width, image.height, xDisplay, visual, screenDepth, device.xcolors, transPixel, false, pixmap, gc); - OS.XFreeGC(xDisplay, gc); - if (error != 0) { - OS.XFreePixmap (xDisplay, pixmap); - SWT.error(error); - } - if (image.getTransparencyType() == SWT.TRANSPARENCY_MASK || image.transparentPixel != -1) { - if (image.transparentPixel != -1) transparentPixel = transPixel[0]; - ImageData maskImage = image.getTransparencyMask(); - int mask = OS.XCreatePixmap(xDisplay, drawable, image.width, image.height, 1); - gc = OS.XCreateGC(xDisplay, mask, 0, null); - error = putImage(maskImage, 0, 0, maskImage.width, maskImage.height, 0, 0, maskImage.width, maskImage.height, xDisplay, visual, screenDepth, device.xcolors, null, true, mask, gc); - OS.XFreeGC(xDisplay, gc); - if (error != 0) { - OS.XFreePixmap (xDisplay, pixmap); - OS.XFreePixmap (xDisplay, mask); - SWT.error(error); - } - this.mask = mask; - if (image.getTransparencyType() == SWT.TRANSPARENCY_MASK) { - this.type = SWT.ICON; - } else { - this.type = SWT.BITMAP; - } - } else { - this.type = SWT.BITMAP; - this.mask = 0; - this.alpha = image.alpha; - if (image.alpha == -1 && image.alphaData != null) { - this.alphaData = new byte[image.alphaData.length]; - System.arraycopy(image.alphaData, 0, this.alphaData, 0, alphaData.length); - } - if (device.useXRender && (alpha != -1 || alphaData != null)) { - mask = OS.XCreatePixmap(xDisplay, drawable, alpha != -1 ? 1 : image.width, alpha != -1 ? 1 : image.height, 8); - if (mask == 0) SWT.error(SWT.ERROR_NO_HANDLES); - gc = OS.XCreateGC(xDisplay, mask, 0, null); - if (alpha != -1) { - OS.XSetForeground(xDisplay, gc, (alpha & 0xFF) << 8 | (alpha & 0xFF)); - OS.XFillRectangle(xDisplay, mask, gc, 0, 0, 1, 1); - } else { - int imagePtr = OS.XGetImage(xDisplay, mask, 0, 0, image.width, image.height, OS.AllPlanes, OS.ZPixmap); - XImage xImage = new XImage(); - OS.memmove(xImage, imagePtr, XImage.sizeof); - if (xImage.bytes_per_line == image.width) { - OS.memmove(xImage.data, alphaData, alphaData.length); - } else { - byte[] line = new byte[xImage.bytes_per_line]; - for (int y = 0; y < image.height; y++) { - System.arraycopy(alphaData, image.width * y, line, 0, image.width); - OS.memmove(xImage.data + (xImage.bytes_per_line * y), line, xImage.bytes_per_line); - } - } - OS.XPutImage(xDisplay, mask, gc, imagePtr, 0, 0, 0, 0, image.width, image.height); - OS.XDestroyImage(imagePtr); - } - OS.XFreeGC(xDisplay, gc); - } - } - this.pixmap = pixmap; -} -/** - * Invokes platform specific functionality to allocate a new GC handle. - * <p> - * <b>IMPORTANT:</b> This method is <em>not</em> part of the public - * API for <code>Image</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 data the platform specific GC data - * @return the platform specific GC handle - */ -public int internal_new_GC (GCData data) { - if (pixmap == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - if (type != SWT.BITMAP || memGC != null) { - SWT.error(SWT.ERROR_INVALID_ARGUMENT); - } - int xDisplay = device.xDisplay; - int xGC = OS.XCreateGC (xDisplay, pixmap, 0, null); - if (xGC == 0) SWT.error (SWT.ERROR_NO_HANDLES); - if (data != null) { - int mask = SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT; - if ((data.style & mask) == 0) { - data.style |= SWT.LEFT_TO_RIGHT; - } - data.device = device; - data.display = xDisplay; - data.drawable = pixmap; - data.background = device.COLOR_WHITE.handle.pixel; - data.foreground = device.COLOR_BLACK.handle.pixel; - data.font = device.systemFont; - data.colormap = OS.XDefaultColormap (xDisplay, OS.XDefaultScreen (xDisplay)); - data.image = this; - } - return xGC; -} -/** - * Invokes platform specific functionality to dispose a GC handle. - * <p> - * <b>IMPORTANT:</b> This method is <em>not</em> part of the public - * API for <code>Image</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 hDC the platform specific GC handle - * @param data the platform specific GC data - */ -public void internal_dispose_GC (int gc, GCData data) { - int xDisplay = 0; - if (data != null) xDisplay = data.display; - if (xDisplay == 0 && device != null) xDisplay = device.xDisplay; - if (xDisplay == 0) SWT.error (SWT.ERROR_NO_HANDLES); - OS.XFreeGC(xDisplay, gc); -} -/** - * Returns <code>true</code> if the image has been disposed, - * and <code>false</code> otherwise. - * <p> - * This method gets the dispose state for the image. - * When an image has been disposed, it is an error to - * invoke any other method using the image. - * - * @return <code>true</code> when the image is disposed and <code>false</code> otherwise - */ -public boolean isDisposed() { - return pixmap == 0; -} -public static Image motif_new(Device device, int type, int pixmap, int mask) { - if (device == null) device = Device.getDevice(); - Image image = new Image(); - image.device = device; - image.type = type; - image.pixmap = pixmap; - image.mask = mask; - return image; -} -/** - * Put a device-independent image of any depth into a drawable of any depth, - * stretching if necessary. - */ -static int putImage(ImageData image, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, int display, int visual, int screenDepth, XColor[] xcolors, int[] transparentPixel, boolean isMask, int drawable, int gc) { - PaletteData palette = image.palette; - if (!(((image.depth == 1 || image.depth == 2 || image.depth == 4 || image.depth == 8) && !palette.isDirect) || - ((image.depth == 8) || (image.depth == 16 || image.depth == 24 || image.depth == 32) && palette.isDirect))) - return SWT.ERROR_UNSUPPORTED_DEPTH; - - boolean flipX = destWidth < 0; - boolean flipY = destHeight < 0; - if (flipX) { - destWidth = -destWidth; - destX = destX - destWidth; - } - if (flipY) { - destHeight = -destHeight; - destY = destY - destHeight; - } - byte[] srcReds = null, srcGreens = null, srcBlues = null; - if (!palette.isDirect) { - RGB[] rgbs = palette.getRGBs(); - int length = rgbs.length; - srcReds = new byte[length]; - srcGreens = new byte[length]; - srcBlues = new byte[length]; - for (int i = 0; i < rgbs.length; i++) { - RGB rgb = rgbs[i]; - if (rgb == null) continue; - srcReds[i] = (byte)rgb.red; - srcGreens[i] = (byte)rgb.green; - srcBlues[i] = (byte)rgb.blue; - } - } - byte[] destReds = null, destGreens = null, destBlues = null; - int destRedMask = 0, destGreenMask = 0, destBlueMask = 0; - final boolean screenDirect; - if (screenDepth <= 8) { - if (xcolors == null) return SWT.ERROR_UNSUPPORTED_DEPTH; - destReds = new byte[xcolors.length]; - destGreens = new byte[xcolors.length]; - destBlues = new byte[xcolors.length]; - for (int i = 0; i < xcolors.length; i++) { - XColor color = xcolors[i]; - if (color == null) continue; - destReds[i] = (byte)((color.red >> 8) & 0xFF); - destGreens[i] = (byte)((color.green >> 8) & 0xFF); - destBlues[i] = (byte)((color.blue >> 8) & 0xFF); - } - screenDirect = false; - } else { - Visual xVisual = new Visual(); - OS.memmove(xVisual, visual, Visual.sizeof); - destRedMask = xVisual.red_mask; - destGreenMask = xVisual.green_mask; - destBlueMask = xVisual.blue_mask; - screenDirect = true; - } - if (transparentPixel != null) { - int transRed = 0, transGreen = 0, transBlue = 0; - if (palette.isDirect) { - RGB rgb = palette.getRGB(transparentPixel[0]); - transRed = rgb.red; - transGreen = rgb.green; - transBlue = rgb.blue; - } else { - RGB[] rgbs = palette.getRGBs(); - if (transparentPixel[0] < rgbs.length) { - RGB rgb = rgbs[transparentPixel[0]]; - transRed = rgb.red; - transGreen = rgb.green; - transBlue = rgb.blue; - } - } - transparentPixel[0] = ImageData.closestMatch(screenDepth, (byte)transRed, (byte)transGreen, (byte)transBlue, - destRedMask, destGreenMask, destBlueMask, destReds, destGreens, destBlues); - } - - /* Depth 1 */ - if (image.depth == 1) { - int xImagePtr = OS.XCreateImage(display, visual, 1, OS.XYBitmap, 0, 0, destWidth, destHeight, image.scanlinePad * 8, 0); - if (xImagePtr == 0) return SWT.ERROR_NO_HANDLES; - XImage xImage = new XImage(); - OS.memmove(xImage, xImagePtr, XImage.sizeof); - int bufSize = xImage.bytes_per_line * xImage.height; - int bufPtr = OS.XtMalloc(bufSize); - xImage.data = bufPtr; - OS.memmove(xImagePtr, xImage, XImage.sizeof); - byte[] buf = new byte[bufSize]; - ImageData.blit(ImageData.BLIT_SRC, - image.data, image.depth, image.bytesPerLine, image.getByteOrder(), srcX, srcY, srcWidth, srcHeight, null, null, null, - ImageData.ALPHA_OPAQUE, null, 0, srcX, srcY, - buf, xImage.bits_per_pixel, xImage.bytes_per_line, xImage.bitmap_bit_order, 0, 0, destWidth, destHeight, null, null, null, - flipX, flipY); - OS.memmove(xImage.data, buf, bufSize); - - int foreground = 1, background = 0; - if (!isMask) { - foreground = 0; - if (srcReds.length > 1) { - foreground = ImageData.closestMatch(screenDepth, srcReds[1], srcGreens[1], srcBlues[1], - destRedMask, destGreenMask, destBlueMask, destReds, destGreens, destBlues); - } - if (srcReds.length > 0) { - background = ImageData.closestMatch(screenDepth, srcReds[0], srcGreens[0], srcBlues[0], - destRedMask, destGreenMask, destBlueMask, destReds, destGreens, destBlues); - } - } - XGCValues values = new XGCValues(); - OS.XGetGCValues(display, gc, OS.GCForeground | OS.GCBackground, values); - OS.XSetForeground(display, gc, foreground); - OS.XSetBackground(display, gc, background); - OS.XPutImage(display, drawable, gc, xImagePtr, 0, 0, destX, destY, destWidth, destHeight); - OS.XSetForeground(display, gc, values.foreground); - OS.XSetBackground(display, gc, values.background); - OS.XDestroyImage(xImagePtr); - return 0; - } - - /* Depths other than 1 */ - int xImagePtr = OS.XCreateImage(display, visual, screenDepth, OS.ZPixmap, 0, 0, destWidth, destHeight, image.scanlinePad * 8, 0); - if (xImagePtr == 0) return SWT.ERROR_NO_HANDLES; - XImage xImage = new XImage(); - OS.memmove(xImage, xImagePtr, XImage.sizeof); - int bufSize = xImage.bytes_per_line * xImage.height; - int bufPtr = OS.XtMalloc(bufSize); - xImage.data = bufPtr; - OS.memmove(xImagePtr, xImage, XImage.sizeof); - byte[] buf = new byte[bufSize]; - if (palette.isDirect) { - if (screenDirect) { - ImageData.blit(ImageData.BLIT_SRC, - image.data, image.depth, image.bytesPerLine, image.getByteOrder(), srcX, srcY, srcWidth, srcHeight, palette.redMask, palette.greenMask, palette.blueMask, - ImageData.ALPHA_OPAQUE, null, 0, srcX, srcY, - buf, xImage.bits_per_pixel, xImage.bytes_per_line, xImage.byte_order, 0, 0, destWidth, destHeight, xImage.red_mask, xImage.green_mask, xImage.blue_mask, - flipX, flipY); - } else { - ImageData.blit(ImageData.BLIT_SRC, - image.data, image.depth, image.bytesPerLine, image.getByteOrder(), srcX, srcY, srcWidth, srcHeight, palette.redMask, palette.greenMask, palette.blueMask, - ImageData.ALPHA_OPAQUE, null, 0, srcX, srcY, - buf, xImage.bits_per_pixel, xImage.bytes_per_line, xImage.byte_order, 0, 0, destWidth, destHeight, destReds, destGreens, destBlues, - flipX, flipY); - } - } else { - if (screenDirect) { - ImageData.blit(ImageData.BLIT_SRC, - image.data, image.depth, image.bytesPerLine, image.getByteOrder(), srcX, srcY, srcWidth, srcHeight, srcReds, srcGreens, srcBlues, - ImageData.ALPHA_OPAQUE, null, 0, srcX, srcY, - buf, xImage.bits_per_pixel, xImage.bytes_per_line, xImage.byte_order, 0, 0, destWidth, destHeight, xImage.red_mask, xImage.green_mask, xImage.blue_mask, - flipX, flipY); - } else { - ImageData.blit(ImageData.BLIT_SRC, - image.data, image.depth, image.bytesPerLine, image.getByteOrder(), srcX, srcY, srcWidth, srcHeight, srcReds, srcGreens, srcBlues, - ImageData.ALPHA_OPAQUE, null, 0, srcX, srcY, - buf, xImage.bits_per_pixel, xImage.bytes_per_line, xImage.byte_order, 0, 0, destWidth, destHeight, destReds, destGreens, destBlues, - flipX, flipY); - } - } - OS.memmove(xImage.data, buf, bufSize); - OS.XPutImage(display, drawable, gc, xImagePtr, 0, 0, destX, destY, destWidth, destHeight); - OS.XDestroyImage(xImagePtr); - return 0; -} -/** - * Sets the color to which to map the transparent pixel. - * <p> - * There are certain uses of <code>Images</code> that do not support - * transparency (for example, setting an image into a button or label). - * In these cases, it may be desired to simulate transparency by using - * the background color of the widget to paint the transparent pixels - * of the image. This method specifies the color that will be used in - * these cases. For example: - * <pre> - * Button b = new Button(); - * image.setBackground(b.getBackground()); - * b.setImage(image); - * </pre> - * </p><p> - * The image may be modified by this operation (in effect, the - * transparent regions may be filled with the supplied color). Hence - * this operation is not reversible and it is not legal to call - * this function twice or with a null argument. - * </p><p> - * This method has no effect if the receiver does not have a transparent - * pixel value. - * </p> - * - * @param color the color to use when a transparent pixel is specified - * - * @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 (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); - if (color == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); - if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); - if (transparentPixel == -1) return; - /* Generate the mask if necessary. */ - if (mask == 0) createMask(); - Rectangle bounds = getBounds(); - int[] unused = new int[1]; - int[] depth = new int[1]; - int xDisplay = device.xDisplay; - OS.XGetGeometry(xDisplay, pixmap, unused, unused, unused, unused, unused, unused, depth); - int drawable = OS.XDefaultRootWindow(xDisplay); - int tempPixmap = OS.XCreatePixmap(xDisplay, drawable, bounds.width, bounds.height, depth[0]); - int xGC = OS.XCreateGC(xDisplay, tempPixmap, 0, null); - OS.XSetForeground(xDisplay, xGC, color.handle.pixel); - OS.XFillRectangle(xDisplay, tempPixmap, xGC, 0, 0, bounds.width, bounds.height); - OS.XSetClipMask(xDisplay, xGC, mask); - OS.XCopyArea(xDisplay, pixmap, tempPixmap, xGC, 0, 0, bounds.width, bounds.height, 0, 0); - OS.XSetClipMask(xDisplay, xGC, OS.None); - OS.XCopyArea(xDisplay, tempPixmap, pixmap, xGC, 0, 0, bounds.width, bounds.height, 0, 0); - OS.XFreePixmap(xDisplay, tempPixmap); - OS.XFreeGC(xDisplay, xGC); - /* Destroy the receiver's mask if the there is a GC created on it */ - if (memGC != null) destroyMask(); -} -/** - * 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 "Image {*DISPOSED*}"; - return "Image {" + pixmap + "}"; -} -} |