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authorFelipe Heidrich <fheidric>2009-06-30 22:00:12 +0000
committerFelipe Heidrich <fheidric>2009-06-30 22:00:12 +0000
commitf664d297f7bb009784868bf3fcf0b3e3bb9a646b (patch)
tree54012fe4929893eef4891c88cbbf5841272ff433 /bundles/org.eclipse.swt/Eclipse SWT/wpf/org/eclipse/swt/graphics/Image.java
parentbc18a5e014088ce811f09c603b88361094486062 (diff)
downloadeclipse.platform.swt-f664d297f7bb009784868bf3fcf0b3e3bb9a646b.tar.gz
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-/*******************************************************************************
- * Copyright (c) 2000, 2008 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.wpf.*;
-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
- * @see <a href="http://www.eclipse.org/swt/snippets/#image">Image snippets</a>
- * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Examples: GraphicsExample, ImageAnalyzer</a>
- * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
- */
-
-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 image 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 handle;
-
- /**
- * specifies the transparent pixel
- */
- int transparentPixel = -1;
-
- /**
- * the GC which is drawing on the image
- */
- GC memGC;
-
- /**
- * the alpha data for the image
- */
- byte[] alphaData;
-
- /**
- * the global alpha value to be used for every pixel
- */
- int alpha = -1;
-
- /**
- * the image data used to create this image if it is a
- * icon. Used only in WinCE
- */
- ImageData data;
-
- /**
- * width of the image
- */
- int width = -1;
-
- /**
- * height of the image
- */
- int height = -1;
-
- /**
- * specifies the default scanline padding
- */
- static final int DEFAULT_SCANLINE_PAD = 4;
-
-/**
- * Prevents uninitialized instances from being created outside the package.
- */
-Image (Device device) {
- super(device);
-}
-
-/**
- * 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) {
- super(device);
- init(width, height);
- init();
-}
-
-/**
- * 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>{@link SWT#IMAGE_COPY}</b></dt>
- * <dd>the result is an identical copy of srcImage</dd>
- * <dt><b>{@link SWT#IMAGE_DISABLE}</b></dt>
- * <dd>the result is a copy of srcImage which has a <em>disabled</em> look</dd>
- * <dt><b>{@link SWT#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) {
- super(device);
- device = this.device;
- if (srcImage == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
- if (srcImage.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
- Rectangle rect = srcImage.getBounds();
- switch (flag) {
- case SWT.IMAGE_COPY: {
- type = srcImage.type;
- handle = OS.BitmapSource_Clone(srcImage.handle);
- 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);
- }
- break;
- }
- case SWT.IMAGE_DISABLE: {
- ImageData data = srcImage.getImageData();
- PaletteData palette = data.palette;
- RGB[] rgbs = new RGB[3];
- rgbs[0] = device.getSystemColor(SWT.COLOR_BLACK).getRGB();
- rgbs[1] = device.getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW).getRGB();
- rgbs[2] = device.getSystemColor(SWT.COLOR_WIDGET_BACKGROUND).getRGB();
- ImageData newData = new ImageData(rect.width, rect.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 = 0;
-
- /* Convert the pixels. */
- int[] scanline = new int[rect.width];
- int[] maskScanline = null;
- ImageData mask = null;
- if (data.maskData != null) mask = data.getTransparencyMask();
- if (mask != null) maskScanline = new int[rect.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<rect.height; y++) {
- int offset = y * newData.bytesPerLine;
- data.getPixels(0, y, rect.width, scanline, 0);
- if (mask != null) mask.getPixels(0, y, rect.width, maskScanline, 0);
- for (int x=0; x<rect.width; x++) {
- int pixel = scanline[x];
- if (!(pixel == data.transparentPixel || (mask != null && maskScanline[x] == 0))) {
- int red, green, blue;
- if (palette.isDirect) {
- red = pixel & redMask;
- red = (redShift < 0) ? red >>> -redShift : red << redShift;
- green = pixel & greenMask;
- green = (greenShift < 0) ? green >>> -greenShift : green << greenShift;
- blue = pixel & blueMask;
- blue = (blueShift < 0) ? blue >>> -blueShift : blue << blueShift;
- } else {
- red = palette.colors[pixel].red;
- green = palette.colors[pixel].green;
- blue = palette.colors[pixel].blue;
- }
- int intensity = red * red + green * green + blue * blue;
- if (intensity < 98304) {
- newData.data[offset] = (byte)1;
- } else {
- newData.data[offset] = (byte)2;
- }
- }
- offset++;
- }
- }
- init (newData);
- break;
- }
- 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(rect.width, rect.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[rect.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<rect.height; y++) {
- int offset = y * newData.bytesPerLine;
- data.getPixels(0, y, rect.width, scanline, 0);
- for (int x=0; x<rect.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 (newData);
- break;
- }
- default:
- SWT.error(SWT.ERROR_INVALID_ARGUMENT);
- }
- init();
-}
-
-/**
- * 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) {
- super(device);
- if (bounds == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
- init(bounds.width, bounds.height);
- init();
-}
-
-/**
- * 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 data) {
- super(device);
- init(data);
- init();
-}
-
-/**
- * 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) {
- super(device);
- 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(image);
- init();
-}
-
-/**
- * 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) {
- super(device);
- init(new ImageData(stream));
- init();
-}
-
-/**
- * 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) {
- super(device);
- if (filename == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
- try {
- handle = OS.gcnew_BitmapImage();
- if (handle == 0) SWT.error(SWT.ERROR_NO_HANDLES);
- int length = filename.length();
- char[] chars = new char[length + 1];
- filename.getChars(0, length, chars, 0);
- int str = OS.gcnew_String(chars);
- if (str == 0) SWT.error(SWT.ERROR_NO_HANDLES);
- if (!OS.File_Exists(str)) SWT.error(SWT.ERROR_IO);
- int uri = OS.gcnew_Uri(str, OS.UriKind_RelativeOrAbsolute);
- if (uri == 0) SWT.error(SWT.ERROR_NO_HANDLES);
- OS.BitmapImage_BeginInit(handle);
- OS.BitmapImage_CreateOptions(handle, OS.BitmapCreateOptions_PreservePixelFormat);
- OS.BitmapImage_UriSource(handle, uri);
- OS.BitmapImage_EndInit(handle);
- if (OS.Freezable_CanFreeze(handle)) OS.Freezable_Freeze(handle);
- OS.GCHandle_Free(uri);
- OS.GCHandle_Free(str);
- return;
- } catch (SWTException e) {}
- init(new ImageData(filename));
- init();
-}
-
-void destroy() {
- if (memGC != null) memGC.dispose();
- OS.GCHandle_Free(handle);
- handle = 0;
- memGC = null;
-}
-
-/**
- * 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 && handle == image.handle;
-}
-
-/**
- * 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;
- //TODO implement Image.getBackground()
- return null;
-}
-
-/**
- * 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) {
- width = OS.BitmapSource_PixelWidth(handle);
- height = OS.BitmapSource_PixelHeight(handle);
- }
- return new Rectangle(0, 0, width, height);
-}
-
-Point getDPI () {
- //TODO
- return new Point (96, 96);
-}
-
-/**
- * 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);
- int format = OS.BitmapSource_Format(handle);
- int depth = OS.PixelFormat_BitsPerPixel(format);
- int width = OS.BitmapSource_PixelWidth(handle);
- int height = OS.BitmapSource_PixelHeight(handle);
- int scanlinePad = DEFAULT_SCANLINE_PAD;
- int bytesPerLine = (((width * depth + 7) / 8) + (scanlinePad - 1)) / scanlinePad * scanlinePad;
- byte[] buffer = new byte[bytesPerLine * height];
- int rect = OS.Int32Rect_Empty();
- OS.BitmapSource_CopyPixels(handle, rect, buffer, buffer.length, bytesPerLine);
- OS.GCHandle_Free(rect);
- PaletteData paletteData = null;
- int palette = OS.BitmapSource_Palette(handle);
- if (palette != 0) {
- int colors = OS.BitmapPalette_Colors(palette);
- int count = OS.ColorList_Count(colors);
- RGB[] rgbs = new RGB[count];
- paletteData = new PaletteData(rgbs);
- if (count != 0) {
- int index = 0;
- int enumerator = OS.ColorList_GetEnumerator(colors);
- while (OS.IEnumerator_MoveNext(enumerator)) {
- int color = OS.ColorList_Current(enumerator);
- rgbs[index++] = new RGB(OS.Color_R(color) & 0xFF, OS.Color_G(color) & 0xFF, OS.Color_B(color) & 0xFF);
- OS.GCHandle_Free(color);
- }
- OS.GCHandle_Free(enumerator);
- }
- OS.GCHandle_Free(colors);
- OS.GCHandle_Free(palette);
- } else {
- int[] formats = {
- OS.PixelFormats_Bgr555(),
- OS.PixelFormats_Bgr565(),
- OS.PixelFormats_Bgr24(),
- OS.PixelFormats_Rgb24(),
- OS.PixelFormats_Bgr32(),
- OS.PixelFormats_Bgra32(),
- OS.PixelFormats_Pbgra32(),
- OS.PixelFormats_Bgr101010(),
- };
- for (int i = 0; i < formats.length; i++) {
- if (OS.Object_Equals(format, formats[i])) {
- switch (i) {
- case 0: paletteData = new PaletteData(0x7C00, 0x3E0, 0x1F); break;
- case 1: paletteData = new PaletteData(0xF800, 0x7E0, 0x1F); break;
- case 2: paletteData = new PaletteData(0xFF, 0xFF00, 0xFF0000); break;
- case 3: paletteData = new PaletteData(0xFF0000, 0xFF00, 0xFF); break;
- case 4:
- case 5:
- case 6: paletteData = new PaletteData(0xFF00, 0xFF0000, 0xFF000000); break;
- case 7: paletteData = new PaletteData(0x3FF, 0xFFC00, 0x3FF0000); break;
- }
- }
- OS.GCHandle_Free(formats[i]);
- }
- }
- OS.GCHandle_Free(format);
- ImageData data = new ImageData(width, height, depth, paletteData, scanlinePad, buffer);
- data.transparentPixel = transparentPixel;
- if (transparentPixel == -1 && type == SWT.ICON) {
- /* Get the icon mask data */
- int maskPad = 2;
- int maskBpl = (((width + 7) / 8) + (maskPad - 1)) / maskPad * maskPad;
- byte[] maskData = new byte[height * maskBpl];
- int offset = 3, maskOffset = 0;
- for (int y = 0; y<height; y++) {
- for (int x = 0; x<width; x++) {
- if (buffer[offset] != 0) {
- maskData[maskOffset + (x >> 3)] |= (1 << (7 - (x & 0x7)));
- } else {
- maskData[maskOffset + (x >> 3)] &= ~(1 << (7 - (x & 0x7)));
- }
- offset += 4;
- }
- maskOffset += maskBpl;
- }
- data.maskData = maskData;
- data.maskPad = maskPad;
- }
- data.alpha = alpha;
- if (alpha == -1 && alphaData != null) {
- data.alphaData = new byte[alphaData.length];
- System.arraycopy(alphaData, 0, data.alphaData, 0, alphaData.length);
- }
- return data;
-}
-
-/**
- * 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 handle;
-}
-
-void init(int width, int height) {
- if (width <= 0 || height <= 0) {
- SWT.error (SWT.ERROR_INVALID_ARGUMENT);
- }
- type = SWT.BITMAP;
- Point dpi = getDPI();
- int pixelFormat = OS.PixelFormats_Bgr24();
- int stride = width * 3;
- byte[] buffer = new byte[stride * height];
- for (int i = 0; i < buffer.length; i++) {
- buffer[i] = (byte)0xFF;
- }
- handle = OS.BitmapSource_Create(width, height, dpi.x, dpi.y, pixelFormat, 0, buffer, buffer.length, stride);
- if (handle == 0) SWT.error(SWT.ERROR_NO_HANDLES);
- OS.GCHandle_Free(pixelFormat);
- if (OS.Freezable_CanFreeze(handle)) OS.Freezable_Freeze(handle);
-}
-
-void init(ImageData data) {
- PaletteData palette = data.palette;
- if (!(((data.depth == 1 || data.depth == 2 || data.depth == 4 || data.depth == 8) && !palette.isDirect) ||
- ((data.depth == 8) || (data.depth == 16 || data.depth == 24 || data.depth == 32) && palette.isDirect)))
- SWT.error (SWT.ERROR_UNSUPPORTED_DEPTH);
- int width = data.width;
- int height = data.height;
- int redMask = palette.redMask;
- int greenMask = palette.greenMask;
- int blueMask = palette.blueMask;
- ImageData newData = null;
- int pixelFormat = 0;
- boolean transparent = false;
- if (data.maskData != null) {
- transparent= true;
- } else {
- if (data.transparentPixel != -1) {
- transparent = palette.isDirect;
- } else {
- if (data.alpha != -1) {
- transparent = palette.isDirect;
- } else {
- transparent = data.alphaData != null;
- }
- }
- }
- if (transparent) {
- pixelFormat = OS.PixelFormats_Bgra32();
- if (!(palette.isDirect && data.depth == 32 && redMask == 0xFF00 && greenMask == 0xFF0000 && blueMask == 0xFF000000)) {
- newData = new ImageData(width, height, 32, new PaletteData(0xFF00, 0xFF0000, 0xFF000000));
- }
- } else {
- switch (data.depth) {
- case 1: pixelFormat = OS.PixelFormats_Indexed1(); break;
- case 2: pixelFormat = OS.PixelFormats_Indexed2(); break;
- case 4: pixelFormat = OS.PixelFormats_Indexed4(); break;
- case 8:
- if (!palette.isDirect) {
- pixelFormat = OS.PixelFormats_Indexed8();
- } else {
- pixelFormat = OS.PixelFormats_Bgr32();
- newData = new ImageData(data.width, data.height, 32, new PaletteData(0xFF00, 0xFF0000, 0xFF000000));
- }
- break;
- case 16:
- if (redMask == 0x7C00 && greenMask == 0x3E0 && blueMask == 0x1F) {
- pixelFormat = OS.PixelFormats_Bgr555();
- } else if (redMask == 0xF800 && greenMask == 0x7E0 && blueMask == 0x1F) {
- pixelFormat = OS.PixelFormats_Bgr565();
- } else {
- pixelFormat = OS.PixelFormats_Bgr555();
- newData = new ImageData(data.width, data.height, 16, new PaletteData(0x7C00, 0x3E0, 0x1F));
- }
- break;
- case 24:
- if (redMask == 0xFF && greenMask == 0xFF00 && blueMask == 0xFF0000) {
- pixelFormat = OS.PixelFormats_Bgr24();
- } else if (redMask == 0xFF0000 && greenMask == 0xFF00 && blueMask == 0xFF) {
- pixelFormat = OS.PixelFormats_Rgb24();
- } else {
- pixelFormat = OS.PixelFormats_Bgr24();
- newData = new ImageData(data.width, data.height, 24, new PaletteData(0xFF, 0xFF00, 0xFF0000));
- }
- break;
- case 32:
- if (redMask == 0x3FF && greenMask == 0xFFC00 && blueMask == 0x3FF0000) {
- pixelFormat = OS.PixelFormats_Bgr101010();
- } else if (redMask == 0xFF00 && greenMask == 0xFF0000 && blueMask == 0xFF000000) {
- pixelFormat = OS.PixelFormats_Bgr32();
- } else {
- pixelFormat = OS.PixelFormats_Bgr32();
- newData = new ImageData(data.width, data.height, 32, new PaletteData(0xFF00, 0xFF0000, 0xFF000000));
- }
- break;
- }
- }
- if (newData != null) {
- PaletteData newPalette = newData.palette;
- if (palette.isDirect) {
- ImageData.blit(ImageData.BLIT_SRC,
- data.data, data.depth, data.bytesPerLine, data.getByteOrder(), 0, 0, width, height, redMask, greenMask, blueMask,
- ImageData.ALPHA_OPAQUE, null, 0, 0, 0,
- newData.data, newData.depth, newData.bytesPerLine, newData.getByteOrder(), 0, 0, width, height, newPalette.redMask, newPalette.greenMask, newPalette.blueMask,
- false, false);
- } else {
- RGB[] rgbs = palette.getRGBs();
- int length = rgbs.length;
- byte[] srcReds = new byte[length];
- byte[] srcGreens = new byte[length];
- byte[] 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;
- }
- ImageData.blit(ImageData.BLIT_SRC,
- data.data, data.depth, data.bytesPerLine, data.getByteOrder(), 0, 0, width, height, srcReds, srcGreens, srcBlues,
- ImageData.ALPHA_OPAQUE, null, 0, 0, 0,
- newData.data, newData.depth, newData.bytesPerLine, newData.getByteOrder(), 0, 0, width, height, newPalette.redMask, newPalette.greenMask, newPalette.blueMask,
- false, false);
- }
- if (data.transparentPixel != -1) {
- newData.transparentPixel = newPalette.getPixel(palette.getRGB(data.transparentPixel));
- }
- newData.maskPad = data.maskPad;
- newData.maskData = data.maskData;
- newData.alpha = data.alpha;
- newData.alphaData = data.alphaData;
- data = newData;
- palette = data.palette;
- }
- int bitmapPalette = 0;
- if (!palette.isDirect) {
- if (data.transparentPixel != -1) {
- transparentPixel = data.transparentPixel;
- } else {
- alpha = data.alpha;
- }
- RGB[] rgbs = palette.colors;
- int list = OS.gcnew_ColorList(rgbs.length);
- for (int i = 0; i < rgbs.length; i++) {
- RGB rgb = rgbs[i];
- byte alpha;
- if (data.transparentPixel != -1) {
- alpha = (byte)(i == data.transparentPixel ? 0 : 0xFF);
- } else {
- alpha = (byte)(data.alpha & 0xFF);
- }
- int color = OS.Color_FromArgb(alpha, (byte)rgb.red, (byte)rgb.green, (byte)rgb.blue);
- OS.ColorList_Add(list, color);
- OS.GCHandle_Free(color);
- }
- bitmapPalette = OS.gcnew_BitmapPalette(list);
- OS.GCHandle_Free(list);
- }
- type = SWT.BITMAP;
- if (transparent) {
- if (data.maskData != null || data.transparentPixel != -1) {
- this.type = data.transparentPixel != -1 ? SWT.BITMAP : SWT.ICON;
- transparentPixel = data.transparentPixel;
- ImageData maskImage = data.getTransparencyMask();
- byte[] maskData = maskImage.data;
- int maskBpl = maskImage.bytesPerLine;
- int offset = 3, maskOffset = 0;
- for (int y = 0; y<height; y++) {
- for (int x = 0; x<width; x++) {
- data.data[offset] = ((maskData[maskOffset + (x >> 3)]) & (1 << (7 - (x & 0x7)))) != 0 ? (byte)0xff : 0;
- offset += 4;
- }
- maskOffset += maskBpl;
- }
- } else if (data.alpha != -1) {
- alpha = data.alpha;
- for (int i = 3, j = 0; i < data.data.length; i+=4, j++) {
- data.data[i] = (byte)alpha;
- }
- } else {
- int length = data.alphaData.length;
- alphaData = new byte[length];
- System.arraycopy(data.alphaData, 0, alphaData, 0, length);
- for (int i = 3, j = 0; i < data.data.length; i+=4, j++) {
- data.data[i] = alphaData[j];
- }
- }
- }
- Point dpi = getDPI();
- handle = OS.BitmapSource_Create(width, height, dpi.x, dpi.y, pixelFormat, bitmapPalette, data.data, data.data.length, data.bytesPerLine);
- if (OS.Freezable_CanFreeze(handle)) OS.Freezable_Freeze(handle);
- OS.GCHandle_Free(pixelFormat);
- if (bitmapPalette != 0) OS.GCHandle_Free(bitmapPalette);
- if (handle == 0) SWT.error(SWT.ERROR_NO_HANDLES);
-}
-
-/**
- * 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 (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
- /*
- * Create a new GC that can draw into the image.
- * Only supported for bitmaps.
- */
- if (type != SWT.BITMAP || memGC != null) {
- SWT.error(SWT.ERROR_INVALID_ARGUMENT);
- }
- if (width == -1 || height == -1) {
- width = OS.BitmapSource_PixelWidth(handle);
- height = OS.BitmapSource_PixelHeight(handle);
- }
-
- int visual = OS.gcnew_DrawingVisual();
- if (visual == 0) SWT.error(SWT.ERROR_NO_HANDLES);
- int rect = OS.gcnew_Rect(0, 0, width, height);
- int geometry = OS.gcnew_RectangleGeometry(rect);
- OS.ContainerVisual_Clip (visual, geometry);
- int dc = OS.DrawingVisual_RenderOpen(visual);
- if (dc == 0) SWT.error(SWT.ERROR_NO_HANDLES);
- OS.DrawingContext_DrawImage(dc, handle, rect);
- OS.GCHandle_Free(rect);
- OS.GCHandle_Free(geometry);
- 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.image = this;
- data.background = OS.Colors_White;
- data.foreground = OS.Colors_Black;
- data.font = device.systemFont;
- data.visual = visual;
- }
- return dc;
-}
-
-/**
- * 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 dc, GCData data) {
- OS.DrawingContext_Close(dc);
- Point dpi = getDPI();
- int pixelFormat = OS.PixelFormats_Pbgra32();
- int renderHandle = OS.gcnew_RenderTargetBitmap(width, height, dpi.x, dpi.y, pixelFormat);
- OS.GCHandle_Free(pixelFormat);
- if (renderHandle == 0) SWT.error(SWT.ERROR_NO_HANDLES);
- OS.RenderTargetBitmap_Render(renderHandle, data.visual);
- OS.GCHandle_Free(data.visual);
- OS.GCHandle_Free(dc);
- int format = OS.BitmapSource_Format(handle);
- int palette = OS.BitmapSource_Palette(handle);
- OS.GCHandle_Free(handle);
- handle = OS.gcnew_FormatConvertedBitmap(renderHandle, format, palette, 100);
- OS.GCHandle_Free(palette);
- OS.GCHandle_Free(format);
- if (handle == 0) SWT.error(SWT.ERROR_NO_HANDLES);
- OS.GCHandle_Free(renderHandle);
- if (OS.Freezable_CanFreeze(handle)) OS.Freezable_Freeze(handle);
-}
-
-/**
- * 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 handle == 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;
- //TODO implement Image.setBackground()
-}
-
-/**
- * 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 {" + handle + "}";
-}
-
-/**
- * Invokes platform specific functionality to allocate a new image.
- * <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 device the device on which to allocate the color
- * @param type the type of the image (<code>SWT.BITMAP</code> or <code>SWT.ICON</code>)
- * @param handle the OS handle for the image
- * @return a new image object containing the specified device, type and handle
- */
-public static Image wpf_new(Device device, int type, int handle) {
- Image image = new Image(device);
- image.type = type;
- image.handle = handle;
- return image;
-}
-
-}