| /******************************************************************************* |
| * 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; |
| } |
| |
| } |