| /******************************************************************************* |
| * Copyright (c) 2000, 2018 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.graphics; |
| |
| |
| import java.io.*; |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.gdip.*; |
| import org.eclipse.swt.internal.win32.*; |
| |
| /** |
| * 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> |
| * |
| * @noreference This field is not intended to be referenced by clients. |
| */ |
| 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> |
| * |
| * @noreference This field is not intended to be referenced by clients. |
| */ |
| public long /*int*/ handle; |
| |
| /** |
| * specifies the transparent pixel |
| */ |
| int transparentPixel = -1, transparentColor = -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; |
| |
| /** |
| * ImageFileNameProvider to provide file names at various Zoom levels |
| */ |
| private ImageFileNameProvider imageFileNameProvider; |
| |
| /** |
| * ImageDataProvider to provide ImageData at various Zoom levels |
| */ |
| private ImageDataProvider imageDataProvider; |
| |
| /** |
| * Style flag used to differentiate normal, gray-scale and disabled images based |
| * on image data providers. Without this, a normal and a disabled image of the |
| * same image data provider would be considered equal. |
| */ |
| private int styleFlag = SWT.IMAGE_COPY; |
| |
| /** |
| * Attribute to cache current device zoom level |
| */ |
| private int currentDeviceZoom = 100; |
| |
| /** |
| * 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); |
| currentDeviceZoom = DPIUtil.getDeviceZoom (); |
| } |
| |
| /** |
| * 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> |
| * <p> |
| * You must dispose the image when it is no longer required. |
| * </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> |
| * |
| * @see #dispose() |
| */ |
| public Image(Device device, int width, int height) { |
| super(device); |
| currentDeviceZoom = DPIUtil.getDeviceZoom (); |
| width = DPIUtil.autoScaleUp (width); |
| height = DPIUtil.autoScaleUp (height); |
| 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> |
| * <p> |
| * You must dispose the image when it is no longer required. |
| * </p> |
| * |
| * @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> |
| * |
| * @see #dispose() |
| */ |
| 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.getBoundsInPixels(); |
| this.type = srcImage.type; |
| this.imageDataProvider = srcImage.imageDataProvider; |
| this.imageFileNameProvider = srcImage.imageFileNameProvider; |
| this.styleFlag = srcImage.styleFlag | flag; |
| this.currentDeviceZoom = srcImage.currentDeviceZoom; |
| switch (flag) { |
| case SWT.IMAGE_COPY: { |
| switch (type) { |
| case SWT.BITMAP: |
| /* Get the HDC for the device */ |
| long /*int*/ hDC = device.internal_new_GC(null); |
| |
| /* Copy the bitmap */ |
| long /*int*/ hdcSource = OS.CreateCompatibleDC(hDC); |
| long /*int*/ hdcDest = OS.CreateCompatibleDC(hDC); |
| long /*int*/ hOldSrc = OS.SelectObject(hdcSource, srcImage.handle); |
| BITMAP bm = new BITMAP(); |
| OS.GetObject(srcImage.handle, BITMAP.sizeof, bm); |
| handle = OS.CreateCompatibleBitmap(hdcSource, rect.width, bm.bmBits != 0 ? -rect.height : rect.height); |
| if (handle == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| long /*int*/ hOldDest = OS.SelectObject(hdcDest, handle); |
| OS.BitBlt(hdcDest, 0, 0, rect.width, rect.height, hdcSource, 0, 0, OS.SRCCOPY); |
| OS.SelectObject(hdcSource, hOldSrc); |
| OS.SelectObject(hdcDest, hOldDest); |
| OS.DeleteDC(hdcSource); |
| OS.DeleteDC(hdcDest); |
| |
| /* Release the HDC for the device */ |
| device.internal_dispose_GC(hDC, null); |
| |
| 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.ICON: |
| handle = OS.CopyImage(srcImage.handle, OS.IMAGE_ICON, rect.width, rect.height, 0); |
| if (handle == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| break; |
| default: |
| SWT.error(SWT.ERROR_INVALID_IMAGE); |
| } |
| break; |
| } |
| case SWT.IMAGE_DISABLE: { |
| ImageData data = srcImage.getImageDataAtCurrentZoom(); |
| 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 (!((data.transparentPixel != -1 && 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.getImageDataAtCurrentZoom(); |
| 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> |
| * <p> |
| * You must dispose the image when it is no longer required. |
| * </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> |
| * |
| * @see #dispose() |
| */ |
| public Image(Device device, Rectangle bounds) { |
| super(device); |
| if (bounds == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| currentDeviceZoom = DPIUtil.getDeviceZoom (); |
| bounds = DPIUtil.autoScaleUp (bounds); |
| init(bounds.width, bounds.height); |
| init(); |
| } |
| |
| /** |
| * Constructs an instance of this class from the given |
| * <code>ImageData</code>. |
| * <p> |
| * You must dispose the image when it is no longer required. |
| * </p> |
| * |
| * @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> |
| * |
| * @see #dispose() |
| */ |
| public Image(Device device, ImageData data) { |
| super(device); |
| if (data == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| currentDeviceZoom = DPIUtil.getDeviceZoom (); |
| data = DPIUtil.autoScaleUp (device, data); |
| 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> |
| * <p> |
| * You must dispose the image when it is no longer required. |
| * </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> |
| * |
| * @see #dispose() |
| */ |
| 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); |
| } |
| currentDeviceZoom = DPIUtil.getDeviceZoom (); |
| source = DPIUtil.autoScaleUp(device, source); |
| mask = DPIUtil.autoScaleUp(device, mask); |
| mask = ImageData.convertMask(mask); |
| init(this.device, this, source, mask); |
| 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> |
| * <p> |
| * You must dispose the image when it is no longer required. |
| * </p> |
| * |
| * @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> |
| * |
| * @see #dispose() |
| */ |
| public Image (Device device, InputStream stream) { |
| super(device); |
| currentDeviceZoom = DPIUtil.getDeviceZoom (); |
| ImageData data = DPIUtil.autoScaleUp(device, new ImageData(stream)); |
| init(data); |
| 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. |
| * <p> |
| * You must dispose the image when it is no longer required. |
| * </p> |
| * |
| * @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> |
| * |
| * @see #dispose() |
| */ |
| public Image (Device device, String filename) { |
| super(device); |
| if (filename == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| currentDeviceZoom = DPIUtil.getDeviceZoom (); |
| ImageData data = DPIUtil.autoScaleUp(device, new ImageData(filename)); |
| init(data); |
| init(); |
| } |
| |
| /** |
| * Constructs an instance of this class by loading its representation |
| * from the file retrieved from the ImageFileNameProvider. 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 for loading image as |
| * per DPI level. |
| * |
| * @param device the device on which to create the image |
| * @param imageFileNameProvider the ImageFileNameProvider object that is |
| * to be used to get the file name |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> |
| * <li>ERROR_NULL_ARGUMENT - if the ImageFileNameProvider is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the fileName provided by ImageFileNameProvider is null at 100% zoom</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> |
| * @since 3.104 |
| */ |
| public Image(Device device, ImageFileNameProvider imageFileNameProvider) { |
| super(device); |
| this.imageFileNameProvider = imageFileNameProvider; |
| currentDeviceZoom = DPIUtil.getDeviceZoom (); |
| boolean[] found = new boolean[1]; |
| String fileName = DPIUtil.validateAndGetImagePathAtZoom (imageFileNameProvider, currentDeviceZoom, found); |
| if (found[0]) { |
| initNative (fileName); |
| if (this.handle == 0) init(new ImageData (fileName)); |
| } else { |
| ImageData resizedData = DPIUtil.autoScaleUp (device, new ImageData (fileName)); |
| init(resizedData); |
| } |
| init(); |
| } |
| |
| /** |
| * Constructs an instance of this class by loading its representation |
| * from the ImageData retrieved from the ImageDataProvider. 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 for loading image as |
| * per DPI level. |
| * |
| * @param device the device on which to create the image |
| * @param imageDataProvider the ImageDataProvider object that is |
| * to be used to get the ImageData |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> |
| * <li>ERROR_NULL_ARGUMENT - if the ImageDataProvider is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the ImageData provided by ImageDataProvider is null at 100% zoom</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> |
| * @since 3.104 |
| */ |
| public Image(Device device, ImageDataProvider imageDataProvider) { |
| super(device); |
| this.imageDataProvider = imageDataProvider; |
| currentDeviceZoom = DPIUtil.getDeviceZoom (); |
| boolean[] found = new boolean[1]; |
| ImageData data = DPIUtil.validateAndGetImageDataAtZoom(imageDataProvider, currentDeviceZoom, found); |
| if (found[0]) { |
| init(data); |
| } else { |
| ImageData resizedData = DPIUtil.autoScaleUp(device, data); |
| init (resizedData); |
| } |
| init(); |
| } |
| |
| /** |
| * Refresh the Image based on the zoom level, if required. |
| * |
| * @return true if image is refreshed |
| */ |
| boolean refreshImageForZoom () { |
| boolean refreshed = false; |
| int deviceZoomLevel = DPIUtil.getDeviceZoom(); |
| if (imageFileNameProvider != null) { |
| if (deviceZoomLevel != currentDeviceZoom) { |
| boolean[] found = new boolean[1]; |
| String filename = DPIUtil.validateAndGetImagePathAtZoom (imageFileNameProvider, deviceZoomLevel, found); |
| /* Avoid re-creating the fall-back image, when current zoom is already 100% */ |
| if (found[0] || currentDeviceZoom != 100) { |
| /* Release current native resources */ |
| destroy (); |
| initNative(filename); |
| if (this.handle == 0) init(new ImageData (filename)); |
| init(); |
| refreshed = true; |
| } |
| if (!found[0]) { |
| /* Release current native resources */ |
| destroy (); |
| ImageData resizedData = DPIUtil.autoScaleUp (device, new ImageData (filename)); |
| init(resizedData); |
| init (); |
| refreshed = true; |
| } |
| currentDeviceZoom = deviceZoomLevel; |
| } |
| } else if (imageDataProvider != null) { |
| if (deviceZoomLevel != currentDeviceZoom) { |
| boolean[] found = new boolean[1]; |
| ImageData data = DPIUtil.validateAndGetImageDataAtZoom (imageDataProvider, deviceZoomLevel, found); |
| /* Avoid re-creating the fall-back image, when current zoom is already 100% */ |
| if (found[0] || currentDeviceZoom != 100) { |
| /* Release current native resources */ |
| destroy (); |
| init(data); |
| init(); |
| refreshed = true; |
| } |
| if (!found[0]) { |
| /* Release current native resources */ |
| destroy (); |
| ImageData resizedData = DPIUtil.autoScaleUp (device, data); |
| init(resizedData); |
| init(); |
| refreshed = true; |
| } |
| currentDeviceZoom = deviceZoomLevel; |
| } |
| } else { |
| if (deviceZoomLevel != currentDeviceZoom) { |
| ImageData data = getImageDataAtCurrentZoom(); |
| destroy (); |
| ImageData resizedData = DPIUtil.autoScaleImageData(device, data, deviceZoomLevel, currentDeviceZoom); |
| init(resizedData); |
| init(); |
| refreshed = true; |
| currentDeviceZoom = deviceZoomLevel; |
| } |
| } |
| return refreshed; |
| } |
| |
| void initNative(String filename) { |
| boolean gdip = true; |
| try { |
| device.checkGDIP(); |
| } catch (SWTException e) { |
| gdip = false; |
| } |
| /* |
| * Bug in GDI+. For some reason, Bitmap.LockBits() segment faults |
| * when loading GIF files in 64-bit Windows. The fix is to not use |
| * GDI+ image loading in this case. |
| */ |
| if (gdip && C.PTR_SIZEOF == 8 && filename.toLowerCase().endsWith(".gif")) gdip = false; |
| /* |
| * Bug in GDI+. Bitmap.LockBits() fails to load GIF files in |
| * Windows 7 when the image has a position offset in the first frame. |
| * The fix is to not use GDI+ image loading in this case. |
| */ |
| if (OS.WIN32_VERSION >= OS.VERSION(6, 1) && filename.toLowerCase().endsWith(".gif")) gdip = false; |
| if (gdip) { |
| int length = filename.length(); |
| char[] chars = new char[length+1]; |
| filename.getChars(0, length, chars, 0); |
| long /*int*/ bitmap = Gdip.Bitmap_new(chars, false); |
| if (bitmap != 0) { |
| int error = SWT.ERROR_NO_HANDLES; |
| int status = Gdip.Image_GetLastStatus(bitmap); |
| if (status == 0) { |
| if (filename.toLowerCase().endsWith(".ico")) { |
| this.type = SWT.ICON; |
| long /*int*/[] hicon = new long /*int*/[1]; |
| status = Gdip.Bitmap_GetHICON(bitmap, hicon); |
| this.handle = hicon[0]; |
| } else { |
| this.type = SWT.BITMAP; |
| int width = Gdip.Image_GetWidth(bitmap); |
| int height = Gdip.Image_GetHeight(bitmap); |
| int pixelFormat = Gdip.Image_GetPixelFormat(bitmap); |
| switch (pixelFormat) { |
| case Gdip.PixelFormat16bppRGB555: |
| case Gdip.PixelFormat16bppRGB565: |
| this.handle = createDIB(width, height, 16); |
| break; |
| case Gdip.PixelFormat24bppRGB: |
| case Gdip.PixelFormat32bppCMYK: |
| this.handle = createDIB(width, height, 24); |
| break; |
| case Gdip.PixelFormat32bppRGB: |
| // These will lose either precision or transparency |
| case Gdip.PixelFormat16bppGrayScale: |
| case Gdip.PixelFormat48bppRGB: |
| case Gdip.PixelFormat32bppPARGB: |
| case Gdip.PixelFormat64bppARGB: |
| case Gdip.PixelFormat64bppPARGB: |
| this.handle = createDIB(width, height, 32); |
| break; |
| } |
| if (this.handle != 0) { |
| /* |
| * This performs better than getting the bits with Bitmap.LockBits(), |
| * but it cannot be used when there is transparency. |
| */ |
| long /*int*/ hDC = device.internal_new_GC(null); |
| long /*int*/ srcHDC = OS.CreateCompatibleDC(hDC); |
| long /*int*/ oldSrcBitmap = OS.SelectObject(srcHDC, this.handle); |
| long /*int*/ graphics = Gdip.Graphics_new(srcHDC); |
| if (graphics != 0) { |
| Rect rect = new Rect(); |
| rect.Width = width; |
| rect.Height = height; |
| status = Gdip.Graphics_DrawImage(graphics, bitmap, rect, 0, 0, width, height, Gdip.UnitPixel, 0, 0, 0); |
| if (status != 0) { |
| error = SWT.ERROR_INVALID_IMAGE; |
| OS.DeleteObject(handle); |
| this.handle = 0; |
| } |
| Gdip.Graphics_delete(graphics); |
| } |
| OS.SelectObject(srcHDC, oldSrcBitmap); |
| OS.DeleteDC(srcHDC); |
| device.internal_dispose_GC(hDC, null); |
| } else { |
| long /*int*/ lockedBitmapData = Gdip.BitmapData_new(); |
| if (lockedBitmapData != 0) { |
| status = Gdip.Bitmap_LockBits(bitmap, 0, 0, pixelFormat, lockedBitmapData); |
| if (status == 0) { |
| BitmapData bitmapData = new BitmapData(); |
| Gdip.MoveMemory(bitmapData, lockedBitmapData); |
| int stride = bitmapData.Stride; |
| long /*int*/ pixels = bitmapData.Scan0; |
| int depth = 0, scanlinePad = 4, transparentPixel = -1; |
| switch (bitmapData.PixelFormat) { |
| case Gdip.PixelFormat1bppIndexed: depth = 1; break; |
| case Gdip.PixelFormat4bppIndexed: depth = 4; break; |
| case Gdip.PixelFormat8bppIndexed: depth = 8; break; |
| case Gdip.PixelFormat16bppARGB1555: |
| case Gdip.PixelFormat16bppRGB555: |
| case Gdip.PixelFormat16bppRGB565: depth = 16; break; |
| case Gdip.PixelFormat24bppRGB: depth = 24; break; |
| case Gdip.PixelFormat32bppRGB: |
| case Gdip.PixelFormat32bppARGB: depth = 32; break; |
| } |
| if (depth != 0) { |
| PaletteData paletteData = null; |
| switch (bitmapData.PixelFormat) { |
| case Gdip.PixelFormat1bppIndexed: |
| case Gdip.PixelFormat4bppIndexed: |
| case Gdip.PixelFormat8bppIndexed: |
| int paletteSize = Gdip.Image_GetPaletteSize(bitmap); |
| long /*int*/ hHeap = OS.GetProcessHeap(); |
| long /*int*/ palette = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, paletteSize); |
| if (palette == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| Gdip.Image_GetPalette(bitmap, palette, paletteSize); |
| ColorPalette colorPalette = new ColorPalette(); |
| Gdip.MoveMemory(colorPalette, palette, ColorPalette.sizeof); |
| int[] entries = new int[colorPalette.Count]; |
| OS.MoveMemory(entries, palette + 8, entries.length * 4); |
| OS.HeapFree(hHeap, 0, palette); |
| RGB[] rgbs = new RGB[colorPalette.Count]; |
| paletteData = new PaletteData(rgbs); |
| for (int i = 0; i < entries.length; i++) { |
| if (((entries[i] >> 24) & 0xFF) == 0 && (colorPalette.Flags & Gdip.PaletteFlagsHasAlpha) != 0) { |
| transparentPixel = i; |
| } |
| rgbs[i] = new RGB(((entries[i] & 0xFF0000) >> 16), ((entries[i] & 0xFF00) >> 8), ((entries[i] & 0xFF) >> 0)); |
| } |
| break; |
| case Gdip.PixelFormat16bppARGB1555: |
| case Gdip.PixelFormat16bppRGB555: paletteData = new PaletteData(0x7C00, 0x3E0, 0x1F); break; |
| case Gdip.PixelFormat16bppRGB565: paletteData = new PaletteData(0xF800, 0x7E0, 0x1F); break; |
| case Gdip.PixelFormat24bppRGB: paletteData = new PaletteData(0xFF, 0xFF00, 0xFF0000); break; |
| case Gdip.PixelFormat32bppRGB: |
| case Gdip.PixelFormat32bppARGB: paletteData = new PaletteData(0xFF00, 0xFF0000, 0xFF000000); break; |
| } |
| byte[] data = new byte[stride * height], alphaData = null; |
| OS.MoveMemory(data, pixels, data.length); |
| switch (bitmapData.PixelFormat) { |
| case Gdip.PixelFormat16bppARGB1555: |
| alphaData = new byte[width * height]; |
| for (int i = 1, j = 0; i < data.length; i += 2, j++) { |
| alphaData[j] = (byte)((data[i] & 0x80) != 0 ? 255 : 0); |
| } |
| break; |
| case Gdip.PixelFormat32bppARGB: |
| alphaData = new byte[width * height]; |
| for (int i = 3, j = 0; i < data.length; i += 4, j++) { |
| alphaData[j] = data[i]; |
| } |
| break; |
| } |
| ImageData img = new ImageData(width, height, depth, paletteData, scanlinePad, data); |
| img.transparentPixel = transparentPixel; |
| img.alphaData = alphaData; |
| init(img); |
| } |
| Gdip.Bitmap_UnlockBits(bitmap, lockedBitmapData); |
| } else { |
| error = SWT.ERROR_INVALID_IMAGE; |
| } |
| Gdip.BitmapData_delete(lockedBitmapData); |
| } |
| } |
| } |
| } |
| Gdip.Bitmap_delete(bitmap); |
| if (status == 0) { |
| if (this.handle == 0) SWT.error(error); |
| } |
| } |
| } |
| } |
| |
| long /*int*/ [] createGdipImage() { |
| switch (type) { |
| case SWT.BITMAP: { |
| if (alpha != -1 || alphaData != null || transparentPixel != -1) { |
| BITMAP bm = new BITMAP(); |
| OS.GetObject(handle, BITMAP.sizeof, bm); |
| int imgWidth = bm.bmWidth; |
| int imgHeight = bm.bmHeight; |
| long /*int*/ hDC = device.internal_new_GC(null); |
| long /*int*/ srcHdc = OS.CreateCompatibleDC(hDC); |
| long /*int*/ oldSrcBitmap = OS.SelectObject(srcHdc, handle); |
| long /*int*/ memHdc = OS.CreateCompatibleDC(hDC); |
| long /*int*/ memDib = createDIB(imgWidth, imgHeight, 32); |
| if (memDib == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| long /*int*/ oldMemBitmap = OS.SelectObject(memHdc, memDib); |
| BITMAP dibBM = new BITMAP(); |
| OS.GetObject(memDib, BITMAP.sizeof, dibBM); |
| int sizeInBytes = dibBM.bmWidthBytes * dibBM.bmHeight; |
| OS.BitBlt(memHdc, 0, 0, imgWidth, imgHeight, srcHdc, 0, 0, OS.SRCCOPY); |
| byte red = 0, green = 0, blue = 0; |
| if (transparentPixel != -1) { |
| if (bm.bmBitsPixel <= 8) { |
| byte[] color = new byte[4]; |
| OS.GetDIBColorTable(srcHdc, transparentPixel, 1, color); |
| blue = color[0]; |
| green = color[1]; |
| red = color[2]; |
| } else { |
| switch (bm.bmBitsPixel) { |
| case 16: |
| int blueMask = 0x1F; |
| int blueShift = ImageData.getChannelShift(blueMask); |
| byte[] blues = ImageData.ANY_TO_EIGHT[ImageData.getChannelWidth(blueMask, blueShift)]; |
| blue = blues[(transparentPixel & blueMask) >> blueShift]; |
| int greenMask = 0x3E0; |
| int greenShift = ImageData.getChannelShift(greenMask); |
| byte[] greens = ImageData.ANY_TO_EIGHT[ImageData.getChannelWidth(greenMask, greenShift)]; |
| green = greens[(transparentPixel & greenMask) >> greenShift]; |
| int redMask = 0x7C00; |
| int redShift = ImageData.getChannelShift(redMask); |
| byte[] reds = ImageData.ANY_TO_EIGHT[ImageData.getChannelWidth(redMask, redShift)]; |
| red = reds[(transparentPixel & redMask) >> redShift]; |
| break; |
| case 24: |
| blue = (byte)((transparentPixel & 0xFF0000) >> 16); |
| green = (byte)((transparentPixel & 0xFF00) >> 8); |
| red = (byte)(transparentPixel & 0xFF); |
| break; |
| case 32: |
| blue = (byte)((transparentPixel & 0xFF000000) >>> 24); |
| green = (byte)((transparentPixel & 0xFF0000) >> 16); |
| red = (byte)((transparentPixel & 0xFF00) >> 8); |
| break; |
| } |
| } |
| } |
| OS.SelectObject(srcHdc, oldSrcBitmap); |
| OS.SelectObject(memHdc, oldMemBitmap); |
| OS.DeleteObject(srcHdc); |
| OS.DeleteObject(memHdc); |
| byte[] srcData = new byte[sizeInBytes]; |
| OS.MoveMemory(srcData, dibBM.bmBits, sizeInBytes); |
| OS.DeleteObject(memDib); |
| device.internal_dispose_GC(hDC, null); |
| if (alpha != -1) { |
| for (int y = 0, dp = 0; y < imgHeight; ++y) { |
| for (int x = 0; x < imgWidth; ++x) { |
| srcData[dp + 3] = (byte)alpha; |
| dp += 4; |
| } |
| } |
| } else if (alphaData != null) { |
| for (int y = 0, dp = 0, ap = 0; y < imgHeight; ++y) { |
| for (int x = 0; x < imgWidth; ++x) { |
| srcData[dp + 3] = alphaData[ap++]; |
| dp += 4; |
| } |
| } |
| } else if (transparentPixel != -1) { |
| for (int y = 0, dp = 0; y < imgHeight; ++y) { |
| for (int x = 0; x < imgWidth; ++x) { |
| if (srcData[dp] == blue && srcData[dp + 1] == green && srcData[dp + 2] == red) { |
| srcData[dp + 3] = (byte)0; |
| } else { |
| srcData[dp + 3] = (byte)0xFF; |
| } |
| dp += 4; |
| } |
| } |
| } |
| long /*int*/ hHeap = OS.GetProcessHeap(); |
| long /*int*/ pixels = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, srcData.length); |
| if (pixels == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| OS.MoveMemory(pixels, srcData, sizeInBytes); |
| return new long /*int*/ []{Gdip.Bitmap_new(imgWidth, imgHeight, dibBM.bmWidthBytes, Gdip.PixelFormat32bppARGB, pixels), pixels}; |
| } |
| return new long /*int*/ []{Gdip.Bitmap_new(handle, 0), 0}; |
| } |
| case SWT.ICON: { |
| /* |
| * Bug in GDI+. Creating a new GDI+ Bitmap from a HICON segment faults |
| * when the icon width is bigger than the icon height. The fix is to |
| * detect this and create a PixelFormat32bppARGB image instead. |
| */ |
| ICONINFO iconInfo = new ICONINFO(); |
| OS.GetIconInfo(handle, iconInfo); |
| long /*int*/ hBitmap = iconInfo.hbmColor; |
| if (hBitmap == 0) hBitmap = iconInfo.hbmMask; |
| BITMAP bm = new BITMAP(); |
| OS.GetObject(hBitmap, BITMAP.sizeof, bm); |
| int imgWidth = bm.bmWidth; |
| int imgHeight = hBitmap == iconInfo.hbmMask ? bm.bmHeight / 2 : bm.bmHeight; |
| long /*int*/ img = 0, pixels = 0; |
| /* |
| * Bug in GDI+. Bitmap_new() segments fault if the image width |
| * is greater than the image height. |
| * |
| * Note that it also fails to generated an appropriate alpha |
| * channel when the icon depth is 32. |
| */ |
| if (imgWidth > imgHeight || bm.bmBitsPixel == 32) { |
| long /*int*/ hDC = device.internal_new_GC(null); |
| long /*int*/ srcHdc = OS.CreateCompatibleDC(hDC); |
| long /*int*/ oldSrcBitmap = OS.SelectObject(srcHdc, hBitmap); |
| long /*int*/ memHdc = OS.CreateCompatibleDC(hDC); |
| long /*int*/ memDib = createDIB(imgWidth, imgHeight, 32); |
| if (memDib == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| long /*int*/ oldMemBitmap = OS.SelectObject(memHdc, memDib); |
| BITMAP dibBM = new BITMAP(); |
| OS.GetObject(memDib, BITMAP.sizeof, dibBM); |
| OS.BitBlt(memHdc, 0, 0, imgWidth, imgHeight, srcHdc, 0, hBitmap == iconInfo.hbmMask ? imgHeight : 0, OS.SRCCOPY); |
| OS.SelectObject(memHdc, oldMemBitmap); |
| OS.DeleteObject(memHdc); |
| byte[] srcData = new byte[dibBM.bmWidthBytes * dibBM.bmHeight]; |
| OS.MoveMemory(srcData, dibBM.bmBits, srcData.length); |
| OS.DeleteObject(memDib); |
| OS.SelectObject(srcHdc, iconInfo.hbmMask); |
| for (int y = 0, dp = 3; y < imgHeight; ++y) { |
| for (int x = 0; x < imgWidth; ++x) { |
| if (srcData[dp] == 0) { |
| if (OS.GetPixel(srcHdc, x, y) != 0) { |
| srcData[dp] = (byte)0; |
| } else { |
| srcData[dp] = (byte)0xFF; |
| } |
| } |
| dp += 4; |
| } |
| } |
| OS.SelectObject(srcHdc, oldSrcBitmap); |
| OS.DeleteObject(srcHdc); |
| device.internal_dispose_GC(hDC, null); |
| long /*int*/ hHeap = OS.GetProcessHeap(); |
| pixels = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, srcData.length); |
| if (pixels == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| OS.MoveMemory(pixels, srcData, srcData.length); |
| img = Gdip.Bitmap_new(imgWidth, imgHeight, dibBM.bmWidthBytes, Gdip.PixelFormat32bppARGB, pixels); |
| } else { |
| img = Gdip.Bitmap_new(handle); |
| } |
| if (iconInfo.hbmColor != 0) OS.DeleteObject(iconInfo.hbmColor); |
| if (iconInfo.hbmMask != 0) OS.DeleteObject(iconInfo.hbmMask); |
| return new long /*int*/ []{img, pixels}; |
| } |
| default: SWT.error(SWT.ERROR_INVALID_IMAGE); |
| } |
| return null; |
| } |
| |
| @Override |
| void destroy () { |
| if (memGC != null) memGC.dispose(); |
| if (type == SWT.ICON) { |
| OS.DestroyIcon (handle); |
| } else { |
| OS.DeleteObject (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 |
| */ |
| @Override |
| public boolean equals (Object object) { |
| if (object == this) return true; |
| if (!(object instanceof Image)) return false; |
| Image image = (Image) object; |
| if (device != image.device || transparentPixel != image.transparentPixel) return false; |
| if (imageDataProvider != null && image.imageDataProvider != null) { |
| return (styleFlag == image.styleFlag) && imageDataProvider.equals (image.imageDataProvider); |
| } else if (imageFileNameProvider != null && image.imageFileNameProvider != null) { |
| return (styleFlag == image.styleFlag) && imageFileNameProvider.equals (image.imageFileNameProvider); |
| } else { |
| return 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; |
| |
| /* Get the HDC for the device */ |
| long /*int*/ hDC = device.internal_new_GC(null); |
| |
| /* Compute the background color */ |
| BITMAP bm = new BITMAP(); |
| OS.GetObject(handle, BITMAP.sizeof, bm); |
| long /*int*/ hdcMem = OS.CreateCompatibleDC(hDC); |
| long /*int*/ hOldObject = OS.SelectObject(hdcMem, handle); |
| int red = 0, green = 0, blue = 0; |
| if (bm.bmBitsPixel <= 8) { |
| byte[] color = new byte[4]; |
| OS.GetDIBColorTable(hdcMem, transparentPixel, 1, color); |
| blue = color[0] & 0xFF; |
| green = color[1] & 0xFF; |
| red = color[2] & 0xFF; |
| } else { |
| switch (bm.bmBitsPixel) { |
| case 16: |
| blue = (transparentPixel & 0x1F) << 3; |
| green = (transparentPixel & 0x3E0) >> 2; |
| red = (transparentPixel & 0x7C00) >> 7; |
| break; |
| case 24: |
| blue = (transparentPixel & 0xFF0000) >> 16; |
| green = (transparentPixel & 0xFF00) >> 8; |
| red = transparentPixel & 0xFF; |
| break; |
| case 32: |
| blue = (transparentPixel & 0xFF000000) >>> 24; |
| green = (transparentPixel & 0xFF0000) >> 16; |
| red = (transparentPixel & 0xFF00) >> 8; |
| break; |
| default: |
| return null; |
| } |
| } |
| OS.SelectObject(hdcMem, hOldObject); |
| OS.DeleteDC(hdcMem); |
| |
| /* Release the HDC for the device */ |
| device.internal_dispose_GC(hDC, null); |
| return Color.win32_new(device, (blue << 16) | (green << 8) | red); |
| } |
| |
| /** |
| * 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 in points. |
| * |
| * @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); |
| return getBounds (100); |
| } |
| |
| Rectangle getBounds(int zoom) { |
| Rectangle bounds = getBoundsInPixels(); |
| if (bounds != null && zoom != currentDeviceZoom) { |
| bounds = DPIUtil.autoScaleBounds(bounds, zoom, currentDeviceZoom); |
| } |
| return bounds; |
| } |
| |
| /** |
| * 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 in pixels. |
| * |
| * @return a rectangle specifying the image's bounds in pixels. |
| * |
| * @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> |
| * @since 3.105 |
| * @deprecated This API doesn't serve the purpose in an environment having |
| * multiple monitors with different DPIs, hence deprecated. |
| */ |
| @Deprecated |
| public Rectangle getBoundsInPixels() { |
| if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| if (width != -1 && height != -1) { |
| return new Rectangle(0, 0, width, height); |
| } |
| switch (type) { |
| case SWT.BITMAP: |
| BITMAP bm = new BITMAP(); |
| OS.GetObject(handle, BITMAP.sizeof, bm); |
| return new Rectangle(0, 0, width = bm.bmWidth, height = bm.bmHeight); |
| case SWT.ICON: |
| ICONINFO info = new ICONINFO(); |
| OS.GetIconInfo(handle, info); |
| long /*int*/ hBitmap = info.hbmColor; |
| if (hBitmap == 0) hBitmap = info.hbmMask; |
| bm = new BITMAP(); |
| OS.GetObject(hBitmap, BITMAP.sizeof, bm); |
| if (hBitmap == info.hbmMask) bm.bmHeight /= 2; |
| if (info.hbmColor != 0) OS.DeleteObject(info.hbmColor); |
| if (info.hbmMask != 0) OS.DeleteObject(info.hbmMask); |
| return new Rectangle(0, 0, width = bm.bmWidth, height = bm.bmHeight); |
| default: |
| SWT.error(SWT.ERROR_INVALID_IMAGE); |
| return null; |
| } |
| } |
| |
| /** |
| * 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 at 100% zoom level. |
| * |
| * @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); |
| return getImageData(100); |
| } |
| |
| /** |
| * Returns an {@link ImageData} for the given zoom level based on the |
| * receiver. |
| * <p> |
| * Note that this method is mainly intended to be used by custom |
| * implementations of {@link ImageDataProvider} that draw a composite image |
| * at the requested zoom level based on other images. For custom zoom |
| * levels, the image data may be an auto-scaled version of the native image |
| * and may look more blurred or mangled than expected. |
| * </p> |
| * <p> |
| * Modifications made to the returned {@code ImageData} will not affect this |
| * {@code Image}. |
| * </p> |
| * |
| * @param zoom |
| * The zoom level in % of the standard resolution (which is 1 |
| * physical monitor pixel == 1 SWT logical point). Typically 100, |
| * 150, or 200. |
| * @return an <code>ImageData</code> containing the image's data and |
| * attributes at the given zoom level |
| * |
| * @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> |
| * |
| * @since 3.106 |
| */ |
| public ImageData getImageData (int zoom) { |
| if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| |
| if (zoom == currentDeviceZoom) { |
| return getImageDataAtCurrentZoom(); |
| } else if (imageDataProvider != null) { |
| boolean[] found = new boolean[1]; |
| ImageData data = DPIUtil.validateAndGetImageDataAtZoom (imageDataProvider, zoom, found); |
| // exact image found |
| if (found[0]) { |
| return data; |
| } |
| // AutoScale the image at 100% zoom |
| return DPIUtil.autoScaleImageData (device, data, zoom, 100); |
| } else if (imageFileNameProvider != null) { |
| boolean[] found = new boolean[1]; |
| String fileName = DPIUtil.validateAndGetImagePathAtZoom (imageFileNameProvider, zoom, found); |
| // exact image found |
| if (found[0]) { |
| return new ImageData (fileName); |
| } |
| // AutoScale the image at 100% zoom |
| return DPIUtil.autoScaleImageData (device, new ImageData (fileName), zoom, 100); |
| } else { |
| return DPIUtil.autoScaleImageData (device, getImageDataAtCurrentZoom (), zoom, currentDeviceZoom); |
| } |
| } |
| |
| /** |
| * 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 at the current zoom level. |
| * |
| * @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 |
| * @since 3.105 |
| * @deprecated This API doesn't serve the purpose in an environment having |
| * multiple monitors with different DPIs, hence deprecated. Use |
| * {@link #getImageData(int)} instead. |
| */ |
| @Deprecated |
| public ImageData getImageDataAtCurrentZoom() { |
| if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
| BITMAP bm; |
| int depth, width, height; |
| switch (type) { |
| case SWT.ICON: { |
| ICONINFO info = new ICONINFO(); |
| OS.GetIconInfo(handle, info); |
| /* Get the basic BITMAP information */ |
| long /*int*/ hBitmap = info.hbmColor; |
| if (hBitmap == 0) hBitmap = info.hbmMask; |
| bm = new BITMAP(); |
| OS.GetObject(hBitmap, BITMAP.sizeof, bm); |
| depth = bm.bmPlanes * bm.bmBitsPixel; |
| width = bm.bmWidth; |
| if (hBitmap == info.hbmMask) bm.bmHeight /= 2; |
| height = bm.bmHeight; |
| int numColors = 0; |
| if (depth <= 8) numColors = 1 << depth; |
| /* Create the BITMAPINFO */ |
| BITMAPINFOHEADER bmiHeader = new BITMAPINFOHEADER(); |
| bmiHeader.biSize = BITMAPINFOHEADER.sizeof; |
| bmiHeader.biWidth = width; |
| bmiHeader.biHeight = -height; |
| bmiHeader.biPlanes = 1; |
| bmiHeader.biBitCount = (short)depth; |
| bmiHeader.biCompression = OS.BI_RGB; |
| byte[] bmi = new byte[BITMAPINFOHEADER.sizeof + numColors * 4]; |
| OS.MoveMemory(bmi, bmiHeader, BITMAPINFOHEADER.sizeof); |
| |
| /* Get the HDC for the device */ |
| long /*int*/ hDC = device.internal_new_GC(null); |
| |
| /* Create the DC and select the bitmap */ |
| long /*int*/ hBitmapDC = OS.CreateCompatibleDC(hDC); |
| long /*int*/ hOldBitmap = OS.SelectObject(hBitmapDC, hBitmap); |
| /* Select the palette if necessary */ |
| long /*int*/ oldPalette = 0; |
| if (depth <= 8) { |
| long /*int*/ hPalette = device.hPalette; |
| if (hPalette != 0) { |
| oldPalette = OS.SelectPalette(hBitmapDC, hPalette, false); |
| OS.RealizePalette(hBitmapDC); |
| } |
| } |
| /* Find the size of the image and allocate data */ |
| int imageSize; |
| /* Call with null lpBits to get the image size */ |
| OS.GetDIBits(hBitmapDC, hBitmap, 0, height, null, bmi, OS.DIB_RGB_COLORS); |
| OS.MoveMemory(bmiHeader, bmi, BITMAPINFOHEADER.sizeof); |
| imageSize = bmiHeader.biSizeImage; |
| byte[] data = new byte[imageSize]; |
| /* Get the bitmap data */ |
| OS.GetDIBits(hBitmapDC, hBitmap, 0, height, data, bmi, OS.DIB_RGB_COLORS); |
| /* Calculate the palette */ |
| PaletteData palette = null; |
| if (depth <= 8) { |
| RGB[] rgbs = new RGB[numColors]; |
| int srcIndex = 40; |
| for (int i = 0; i < numColors; i++) { |
| rgbs[i] = new RGB(bmi[srcIndex + 2] & 0xFF, bmi[srcIndex + 1] & 0xFF, bmi[srcIndex] & 0xFF); |
| srcIndex += 4; |
| } |
| palette = new PaletteData(rgbs); |
| } else if (depth == 16) { |
| palette = new PaletteData(0x7C00, 0x3E0, 0x1F); |
| } else if (depth == 24) { |
| palette = new PaletteData(0xFF, 0xFF00, 0xFF0000); |
| } else if (depth == 32) { |
| palette = new PaletteData(0xFF00, 0xFF0000, 0xFF000000); |
| } else { |
| SWT.error(SWT.ERROR_UNSUPPORTED_DEPTH); |
| } |
| |
| /* Do the mask */ |
| byte [] maskData = null; |
| if (info.hbmColor == 0) { |
| /* Do the bottom half of the mask */ |
| maskData = new byte[imageSize]; |
| OS.GetDIBits(hBitmapDC, hBitmap, height, height, maskData, bmi, OS.DIB_RGB_COLORS); |
| } else { |
| /* Do the entire mask */ |
| /* Create the BITMAPINFO */ |
| bmiHeader = new BITMAPINFOHEADER(); |
| bmiHeader.biSize = BITMAPINFOHEADER.sizeof; |
| bmiHeader.biWidth = width; |
| bmiHeader.biHeight = -height; |
| bmiHeader.biPlanes = 1; |
| bmiHeader.biBitCount = 1; |
| bmiHeader.biCompression = OS.BI_RGB; |
| bmi = new byte[BITMAPINFOHEADER.sizeof + 8]; |
| OS.MoveMemory(bmi, bmiHeader, BITMAPINFOHEADER.sizeof); |
| |
| /* First color black, second color white */ |
| int offset = BITMAPINFOHEADER.sizeof; |
| bmi[offset + 4] = bmi[offset + 5] = bmi[offset + 6] = (byte)0xFF; |
| bmi[offset + 7] = 0; |
| OS.SelectObject(hBitmapDC, info.hbmMask); |
| /* Call with null lpBits to get the image size */ |
| OS.GetDIBits(hBitmapDC, info.hbmMask, 0, height, null, bmi, OS.DIB_RGB_COLORS); |
| OS.MoveMemory(bmiHeader, bmi, BITMAPINFOHEADER.sizeof); |
| imageSize = bmiHeader.biSizeImage; |
| maskData = new byte[imageSize]; |
| OS.GetDIBits(hBitmapDC, info.hbmMask, 0, height, maskData, bmi, OS.DIB_RGB_COLORS); |
| /* Loop to invert the mask */ |
| for (int i = 0; i < maskData.length; i++) { |
| maskData[i] ^= -1; |
| } |
| /* Make sure mask scanlinePad is 2 */ |
| int maskPad; |
| int bpl = imageSize / height; |
| for (maskPad = 1; maskPad < 128; maskPad++) { |
| int calcBpl = (((width + 7) / 8) + (maskPad - 1)) / maskPad * maskPad; |
| if (calcBpl == bpl) break; |
| } |
| maskData = ImageData.convertPad(maskData, width, height, 1, maskPad, 2); |
| } |
| /* Clean up */ |
| OS.SelectObject(hBitmapDC, hOldBitmap); |
| if (oldPalette != 0) { |
| OS.SelectPalette(hBitmapDC, oldPalette, false); |
| OS.RealizePalette(hBitmapDC); |
| } |
| OS.DeleteDC(hBitmapDC); |
| |
| /* Release the HDC for the device */ |
| device.internal_dispose_GC(hDC, null); |
| |
| if (info.hbmColor != 0) OS.DeleteObject(info.hbmColor); |
| if (info.hbmMask != 0) OS.DeleteObject(info.hbmMask); |
| /* Construct and return the ImageData */ |
| ImageData imageData = new ImageData(width, height, depth, palette, 4, data); |
| imageData.maskData = maskData; |
| imageData.maskPad = 2; |
| return imageData; |
| } |
| case SWT.BITMAP: { |
| /* Get the basic BITMAP information */ |
| bm = new BITMAP(); |
| OS.GetObject(handle, BITMAP.sizeof, bm); |
| depth = bm.bmPlanes * bm.bmBitsPixel; |
| width = bm.bmWidth; |
| height = bm.bmHeight; |
| /* Find out whether this is a DIB or a DDB. */ |
| boolean isDib = (bm.bmBits != 0); |
| /* Get the HDC for the device */ |
| long /*int*/ hDC = device.internal_new_GC(null); |
| DIBSECTION dib = null; |
| if (isDib) { |
| dib = new DIBSECTION(); |
| OS.GetObject(handle, DIBSECTION.sizeof, dib); |
| } |
| /* Calculate number of colors */ |
| int numColors = 0; |
| if (depth <= 8) { |
| if (isDib) { |
| numColors = dib.biClrUsed; |
| } else { |
| numColors = 1 << depth; |
| } |
| } |
| /* Create the BITMAPINFO */ |
| byte[] bmi = null; |
| BITMAPINFOHEADER bmiHeader = null; |
| if (!isDib) { |
| bmiHeader = new BITMAPINFOHEADER(); |
| bmiHeader.biSize = BITMAPINFOHEADER.sizeof; |
| bmiHeader.biWidth = width; |
| bmiHeader.biHeight = -height; |
| bmiHeader.biPlanes = 1; |
| bmiHeader.biBitCount = (short)depth; |
| bmiHeader.biCompression = OS.BI_RGB; |
| bmi = new byte[BITMAPINFOHEADER.sizeof + numColors * 4]; |
| OS.MoveMemory(bmi, bmiHeader, BITMAPINFOHEADER.sizeof); |
| } |
| |
| /* Create the DC and select the bitmap */ |
| long /*int*/ hBitmapDC = OS.CreateCompatibleDC(hDC); |
| long /*int*/ hOldBitmap = OS.SelectObject(hBitmapDC, handle); |
| /* Select the palette if necessary */ |
| long /*int*/ oldPalette = 0; |
| if (!isDib && depth <= 8) { |
| long /*int*/ hPalette = device.hPalette; |
| if (hPalette != 0) { |
| oldPalette = OS.SelectPalette(hBitmapDC, hPalette, false); |
| OS.RealizePalette(hBitmapDC); |
| } |
| } |
| /* Find the size of the image and allocate data */ |
| int imageSize; |
| if (isDib) { |
| imageSize = dib.biSizeImage; |
| } else { |
| /* Call with null lpBits to get the image size */ |
| OS.GetDIBits(hBitmapDC, handle, 0, height, null, bmi, OS.DIB_RGB_COLORS); |
| OS.MoveMemory(bmiHeader, bmi, BITMAPINFOHEADER.sizeof); |
| imageSize = bmiHeader.biSizeImage; |
| } |
| byte[] data = new byte[imageSize]; |
| /* Get the bitmap data */ |
| if (isDib) { |
| OS.MoveMemory(data, bm.bmBits, imageSize); |
| } else { |
| OS.GetDIBits(hBitmapDC, handle, 0, height, data, bmi, OS.DIB_RGB_COLORS); |
| } |
| /* Calculate the palette */ |
| PaletteData palette = null; |
| if (depth <= 8) { |
| RGB[] rgbs = new RGB[numColors]; |
| if (isDib) { |
| byte[] colors = new byte[numColors * 4]; |
| OS.GetDIBColorTable(hBitmapDC, 0, numColors, colors); |
| int colorIndex = 0; |
| for (int i = 0; i < rgbs.length; i++) { |
| rgbs[i] = new RGB(colors[colorIndex + 2] & 0xFF, colors[colorIndex + 1] & 0xFF, colors[colorIndex] & 0xFF); |
| colorIndex += 4; |
| } |
| } else { |
| int srcIndex = BITMAPINFOHEADER.sizeof; |
| for (int i = 0; i < numColors; i++) { |
| rgbs[i] = new RGB(bmi[srcIndex + 2] & 0xFF, bmi[srcIndex + 1] & 0xFF, bmi[srcIndex] & 0xFF); |
| srcIndex += 4; |
| } |
| } |
| palette = new PaletteData(rgbs); |
| } else if (depth == 16) { |
| palette = new PaletteData(0x7C00, 0x3E0, 0x1F); |
| } else if (depth == 24) { |
| palette = new PaletteData(0xFF, 0xFF00, 0xFF0000); |
| } else if (depth == 32) { |
| palette = new PaletteData(0xFF00, 0xFF0000, 0xFF000000); |
| } else { |
| SWT.error(SWT.ERROR_UNSUPPORTED_DEPTH); |
| } |
| /* Clean up */ |
| OS.SelectObject(hBitmapDC, hOldBitmap); |
| if (oldPalette != 0) { |
| OS.SelectPalette(hBitmapDC, oldPalette, false); |
| OS.RealizePalette(hBitmapDC); |
| } |
| OS.DeleteDC(hBitmapDC); |
| |
| /* Release the HDC for the device */ |
| device.internal_dispose_GC(hDC, null); |
| |
| /* Construct and return the ImageData */ |
| ImageData imageData = new ImageData(width, height, depth, palette, 4, data); |
| imageData.transparentPixel = this.transparentPixel; |
| imageData.alpha = alpha; |
| if (alpha == -1 && alphaData != null) { |
| imageData.alphaData = new byte[alphaData.length]; |
| System.arraycopy(alphaData, 0, imageData.alphaData, 0, alphaData.length); |
| } |
| return imageData; |
| } |
| default: |
| SWT.error(SWT.ERROR_INVALID_IMAGE); |
| return null; |
| } |
| } |
| |
| /** |
| * 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 |
| */ |
| @Override |
| public int hashCode () { |
| if (imageDataProvider != null) { |
| return imageDataProvider.hashCode(); |
| } else if (imageFileNameProvider != null) { |
| return imageFileNameProvider.hashCode(); |
| } else { |
| return (int)/*64*/handle; |
| } |
| } |
| |
| void init(int width, int height) { |
| if (width <= 0 || height <= 0) { |
| SWT.error (SWT.ERROR_INVALID_ARGUMENT); |
| } |
| type = SWT.BITMAP; |
| long /*int*/ hDC = device.internal_new_GC(null); |
| handle = OS.CreateCompatibleBitmap(hDC, width, height); |
| /* |
| * Feature in Windows. CreateCompatibleBitmap() may fail |
| * for large images. The fix is to create a DIB section |
| * in that case. |
| */ |
| if (handle == 0) { |
| int bits = OS.GetDeviceCaps(hDC, OS.BITSPIXEL); |
| int planes = OS.GetDeviceCaps(hDC, OS.PLANES); |
| int depth = bits * planes; |
| if (depth < 16) depth = 16; |
| handle = createDIB(width, height, depth); |
| } |
| if (handle != 0) { |
| long /*int*/ memDC = OS.CreateCompatibleDC(hDC); |
| long /*int*/ hOldBitmap = OS.SelectObject(memDC, handle); |
| OS.PatBlt(memDC, 0, 0, width, height, OS.PATCOPY); |
| OS.SelectObject(memDC, hOldBitmap); |
| OS.DeleteDC(memDC); |
| } |
| device.internal_dispose_GC(hDC, null); |
| if (handle == 0) { |
| SWT.error(SWT.ERROR_NO_HANDLES, null, device.getLastError()); |
| } |
| } |
| |
| static long /*int*/ createDIB(int width, int height, int depth) { |
| BITMAPINFOHEADER bmiHeader = new BITMAPINFOHEADER(); |
| bmiHeader.biSize = BITMAPINFOHEADER.sizeof; |
| bmiHeader.biWidth = width; |
| bmiHeader.biHeight = -height; |
| bmiHeader.biPlanes = 1; |
| bmiHeader.biBitCount = (short)depth; |
| bmiHeader.biCompression = OS.BI_RGB; |
| byte[] bmi = new byte[BITMAPINFOHEADER.sizeof]; |
| OS.MoveMemory(bmi, bmiHeader, BITMAPINFOHEADER.sizeof); |
| long /*int*/[] pBits = new long /*int*/[1]; |
| return OS.CreateDIBSection(0, bmi, OS.DIB_RGB_COLORS, pBits, 0, 0); |
| } |
| |
| static long /*int*/ [] init(Device device, Image image, ImageData i) { |
| /* Windows does not support 2-bit images. Convert to 4-bit image. */ |
| if (i.depth == 2) { |
| ImageData img = new ImageData(i.width, i.height, 4, i.palette); |
| ImageData.blit(ImageData.BLIT_SRC, |
| i.data, i.depth, i.bytesPerLine, i.getByteOrder(), 0, 0, i.width, i.height, null, null, null, |
| ImageData.ALPHA_OPAQUE, null, 0, 0, 0, |
| img.data, img.depth, img.bytesPerLine, i.getByteOrder(), 0, 0, img.width, img.height, null, null, null, |
| false, false); |
| img.transparentPixel = i.transparentPixel; |
| img.maskPad = i.maskPad; |
| img.maskData = i.maskData; |
| img.alpha = i.alpha; |
| img.alphaData = i.alphaData; |
| i = img; |
| } |
| /* |
| * Windows supports 16-bit mask of (0x7C00, 0x3E0, 0x1F), |
| * 24-bit mask of (0xFF0000, 0xFF00, 0xFF) and 32-bit mask |
| * (0x00FF0000, 0x0000FF00, 0x000000FF) as documented in |
| * MSDN BITMAPINFOHEADER. Make sure the image is |
| * Windows-supported. |
| */ |
| if (i.palette.isDirect) { |
| final PaletteData palette = i.palette; |
| final int redMask = palette.redMask; |
| final int greenMask = palette.greenMask; |
| final int blueMask = palette.blueMask; |
| int newDepth = i.depth; |
| int newOrder = ImageData.MSB_FIRST; |
| PaletteData newPalette = null; |
| |
| switch (i.depth) { |
| case 8: |
| newDepth = 16; |
| newOrder = ImageData.LSB_FIRST; |
| newPalette = new PaletteData(0x7C00, 0x3E0, 0x1F); |
| break; |
| case 16: |
| newOrder = ImageData.LSB_FIRST; |
| if (!(redMask == 0x7C00 && greenMask == 0x3E0 && blueMask == 0x1F)) { |
| newPalette = new PaletteData(0x7C00, 0x3E0, 0x1F); |
| } |
| break; |
| case 24: |
| if (!(redMask == 0xFF && greenMask == 0xFF00 && blueMask == 0xFF0000)) { |
| newPalette = new PaletteData(0xFF, 0xFF00, 0xFF0000); |
| } |
| break; |
| case 32: |
| if (!(redMask == 0xFF00 && greenMask == 0xFF0000 && blueMask == 0xFF000000)) { |
| newPalette = new PaletteData(0xFF00, 0xFF0000, 0xFF000000); |
| } |
| break; |
| default: |
| SWT.error(SWT.ERROR_UNSUPPORTED_DEPTH); |
| } |
| if (newPalette != null) { |
| ImageData img = new ImageData(i.width, i.height, newDepth, newPalette); |
| ImageData.blit(ImageData.BLIT_SRC, |
| i.data, i.depth, i.bytesPerLine, i.getByteOrder(), 0, 0, i.width, i.height, redMask, greenMask, blueMask, |
| ImageData.ALPHA_OPAQUE, null, 0, 0, 0, |
| img.data, img.depth, img.bytesPerLine, newOrder, 0, 0, img.width, img.height, newPalette.redMask, newPalette.greenMask, newPalette.blueMask, |
| false, false); |
| if (i.transparentPixel != -1) { |
| img.transparentPixel = newPalette.getPixel(palette.getRGB(i.transparentPixel)); |
| } |
| img.maskPad = i.maskPad; |
| img.maskData = i.maskData; |
| img.alpha = i.alpha; |
| img.alphaData = i.alphaData; |
| i = img; |
| } |
| } |
| /* Construct bitmap info header by hand */ |
| RGB[] rgbs = i.palette.getRGBs(); |
| BITMAPINFOHEADER bmiHeader = new BITMAPINFOHEADER(); |
| bmiHeader.biSize = BITMAPINFOHEADER.sizeof; |
| bmiHeader.biWidth = i.width; |
| bmiHeader.biHeight = -i.height; |
| bmiHeader.biPlanes = 1; |
| bmiHeader.biBitCount = (short)i.depth; |
| bmiHeader.biCompression = OS.BI_RGB; |
| bmiHeader.biClrUsed = rgbs == null ? 0 : rgbs.length; |
| byte[] bmi; |
| if (i.palette.isDirect) |
| bmi = new byte[BITMAPINFOHEADER.sizeof]; |
| else |
| bmi = new byte[BITMAPINFOHEADER.sizeof + rgbs.length * 4]; |
| OS.MoveMemory(bmi, bmiHeader, BITMAPINFOHEADER.sizeof); |
| /* Set the rgb colors into the bitmap info */ |
| int offset = BITMAPINFOHEADER.sizeof; |
| if (!i.palette.isDirect) { |
| for (int j = 0; j < rgbs.length; j++) { |
| bmi[offset] = (byte)rgbs[j].blue; |
| bmi[offset + 1] = (byte)rgbs[j].green; |
| bmi[offset + 2] = (byte)rgbs[j].red; |
| bmi[offset + 3] = 0; |
| offset += 4; |
| } |
| } |
| long /*int*/[] pBits = new long /*int*/[1]; |
| long /*int*/ hDib = OS.CreateDIBSection(0, bmi, OS.DIB_RGB_COLORS, pBits, 0, 0); |
| if (hDib == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| /* In case of a scanline pad other than 4, do the work to convert it */ |
| byte[] data = i.data; |
| if (i.scanlinePad != 4 && (i.bytesPerLine % 4 != 0)) { |
| data = ImageData.convertPad(data, i.width, i.height, i.depth, i.scanlinePad, 4); |
| } |
| OS.MoveMemory(pBits[0], data, data.length); |
| |
| long /*int*/ [] result = null; |
| if (i.getTransparencyType() == SWT.TRANSPARENCY_MASK) { |
| /* Get the HDC for the device */ |
| long /*int*/ hDC = device.internal_new_GC(null); |
| |
| /* Create the color bitmap */ |
| long /*int*/ hdcSrc = OS.CreateCompatibleDC(hDC); |
| OS.SelectObject(hdcSrc, hDib); |
| long /*int*/ hBitmap = OS.CreateCompatibleBitmap(hDC, i.width, i.height); |
| if (hBitmap == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| long /*int*/ hdcDest = OS.CreateCompatibleDC(hDC); |
| OS.SelectObject(hdcDest, hBitmap); |
| OS.BitBlt(hdcDest, 0, 0, i.width, i.height, hdcSrc, 0, 0, OS.SRCCOPY); |
| |
| /* Release the HDC for the device */ |
| device.internal_dispose_GC(hDC, null); |
| |
| /* Create the mask. Windows requires icon masks to have a scanline pad of 2. */ |
| byte[] maskData = ImageData.convertPad(i.maskData, i.width, i.height, 1, i.maskPad, 2); |
| long /*int*/ hMask = OS.CreateBitmap(i.width, i.height, 1, 1, maskData); |
| if (hMask == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| OS.SelectObject(hdcSrc, hMask); |
| OS.PatBlt(hdcSrc, 0, 0, i.width, i.height, OS.DSTINVERT); |
| OS.DeleteDC(hdcSrc); |
| OS.DeleteDC(hdcDest); |
| OS.DeleteObject(hDib); |
| |
| if (image == null) { |
| result = new long /*int*/ []{hBitmap, hMask}; |
| } else { |
| /* Create the icon */ |
| ICONINFO info = new ICONINFO(); |
| info.fIcon = true; |
| info.hbmColor = hBitmap; |
| info.hbmMask = hMask; |
| long /*int*/ hIcon = OS.CreateIconIndirect(info); |
| if (hIcon == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| OS.DeleteObject(hBitmap); |
| OS.DeleteObject(hMask); |
| image.handle = hIcon; |
| image.type = SWT.ICON; |
| } |
| } else { |
| if (image == null) { |
| result = new long /*int*/ []{hDib}; |
| } else { |
| image.handle = hDib; |
| image.type = SWT.BITMAP; |
| image.transparentPixel = i.transparentPixel; |
| if (image.transparentPixel == -1) { |
| image.alpha = i.alpha; |
| if (i.alpha == -1 && i.alphaData != null) { |
| int length = i.alphaData.length; |
| image.alphaData = new byte[length]; |
| System.arraycopy(i.alphaData, 0, image.alphaData, 0, length); |
| } |
| } |
| } |
| } |
| return result; |
| } |
| |
| static long /*int*/ [] init(Device device, Image image, ImageData source, ImageData mask) { |
| /* Create a temporary image and locate the black pixel */ |
| ImageData imageData; |
| int blackIndex = 0; |
| if (source.palette.isDirect) { |
| imageData = new ImageData(source.width, source.height, source.depth, source.palette); |
| } else { |
| RGB black = new RGB(0, 0, 0); |
| RGB[] rgbs = source.getRGBs(); |
| if (source.transparentPixel != -1) { |
| /* |
| * The source had transparency, so we can use the transparent pixel |
| * for black. |
| */ |
| RGB[] newRGBs = new RGB[rgbs.length]; |
| System.arraycopy(rgbs, 0, newRGBs, 0, rgbs.length); |
| if (source.transparentPixel >= newRGBs.length) { |
| /* Grow the palette with black */ |
| rgbs = new RGB[source.transparentPixel + 1]; |
| System.arraycopy(newRGBs, 0, rgbs, 0, newRGBs.length); |
| for (int i = newRGBs.length; i <= source.transparentPixel; i++) { |
| rgbs[i] = new RGB(0, 0, 0); |
| } |
| } else { |
| newRGBs[source.transparentPixel] = black; |
| rgbs = newRGBs; |
| } |
| blackIndex = source.transparentPixel; |
| imageData = new ImageData(source.width, source.height, source.depth, new PaletteData(rgbs)); |
| } else { |
| while (blackIndex < rgbs.length) { |
| if (rgbs[blackIndex].equals(black)) break; |
| blackIndex++; |
| } |
| if (blackIndex == rgbs.length) { |
| /* |
| * We didn't find black in the palette, and there is no transparent |
| * pixel we can use. |
| */ |
| if ((1 << source.depth) > rgbs.length) { |
| /* We can grow the palette and add black */ |
| RGB[] newRGBs = new RGB[rgbs.length + 1]; |
| System.arraycopy(rgbs, 0, newRGBs, 0, rgbs.length); |
| newRGBs[rgbs.length] = black; |
| rgbs = newRGBs; |
| } else { |
| /* No room to grow the palette */ |
| blackIndex = -1; |
| } |
| } |
| imageData = new ImageData(source.width, source.height, source.depth, new PaletteData(rgbs)); |
| } |
| } |
| if (blackIndex == -1) { |
| /* There was no black in the palette, so just copy the data over */ |
| System.arraycopy(source.data, 0, imageData.data, 0, imageData.data.length); |
| } else { |
| /* Modify the source image to contain black wherever the mask is 0 */ |
| int[] imagePixels = new int[imageData.width]; |
| int[] maskPixels = new int[mask.width]; |
| for (int y = 0; y < imageData.height; y++) { |
| source.getPixels(0, y, imageData.width, imagePixels, 0); |
| mask.getPixels(0, y, mask.width, maskPixels, 0); |
| for (int i = 0; i < imagePixels.length; i++) { |
| if (maskPixels[i] == 0) imagePixels[i] = blackIndex; |
| } |
| imageData.setPixels(0, y, source.width, imagePixels, 0); |
| } |
| } |
| imageData.maskPad = mask.scanlinePad; |
| imageData.maskData = mask.data; |
| return init(device, image, imageData); |
| } |
| void init(ImageData i) { |
| if (i == null) SWT.error(SWT.ERROR_NULL_ARGUMENT); |
| init(device, this, i); |
| } |
| |
| /** |
| * 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 |
| * |
| * @noreference This method is not intended to be referenced by clients. |
| */ |
| @Override |
| public long /*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); |
| } |
| |
| /* Create a compatible HDC for the device */ |
| long /*int*/ hDC = device.internal_new_GC(null); |
| long /*int*/ imageDC = OS.CreateCompatibleDC(hDC); |
| device.internal_dispose_GC(hDC, null); |
| if (imageDC == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| |
| if (data != null) { |
| /* Set the GCData fields */ |
| int mask = SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT; |
| if ((data.style & mask) != 0) { |
| data.layout = (data.style & SWT.RIGHT_TO_LEFT) != 0 ? OS.LAYOUT_RTL : 0; |
| } else { |
| data.style |= SWT.LEFT_TO_RIGHT; |
| } |
| data.device = device; |
| data.image = this; |
| data.font = device.systemFont; |
| } |
| return imageDC; |
| } |
| |
| /** |
| * 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 |
| * |
| * @noreference This method is not intended to be referenced by clients. |
| */ |
| @Override |
| public void internal_dispose_GC (long /*int*/ hDC, GCData data) { |
| OS.DeleteDC(hDC); |
| } |
| |
| /** |
| * 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 (except {@link #dispose()}) using the image. |
| * |
| * @return <code>true</code> when the image is disposed and <code>false</code> otherwise |
| */ |
| @Override |
| 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:</p> |
| * <pre> |
| * Button b = new Button(); |
| * image.setBackground(b.getBackground()); |
| * b.setImage(image); |
| * </pre> |
| * <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; |
| transparentColor = -1; |
| |
| /* Get the HDC for the device */ |
| long /*int*/ hDC = device.internal_new_GC(null); |
| |
| /* Change the background color in the image */ |
| BITMAP bm = new BITMAP(); |
| OS.GetObject(handle, BITMAP.sizeof, bm); |
| long /*int*/ hdcMem = OS.CreateCompatibleDC(hDC); |
| OS.SelectObject(hdcMem, handle); |
| int maxColors = 1 << bm.bmBitsPixel; |
| byte[] colors = new byte[maxColors * 4]; |
| int numColors = OS.GetDIBColorTable(hdcMem, 0, maxColors, colors); |
| int offset = transparentPixel * 4; |
| colors[offset] = (byte)color.getBlue(); |
| colors[offset + 1] = (byte)color.getGreen(); |
| colors[offset + 2] = (byte)color.getRed(); |
| OS.SetDIBColorTable(hdcMem, 0, numColors, colors); |
| OS.DeleteDC(hdcMem); |
| |
| /* Release the HDC for the device */ |
| device.internal_dispose_GC(hDC, null); |
| } |
| |
| /** |
| * Returns a string containing a concise, human-readable |
| * description of the receiver. |
| * |
| * @return a string representation of the receiver |
| */ |
| @Override |
| 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 |
| * |
| * @noreference This method is not intended to be referenced by clients. |
| */ |
| public static Image win32_new(Device device, int type, long /*int*/ handle) { |
| Image image = new Image(device); |
| image.type = type; |
| image.handle = handle; |
| return image; |
| } |
| |
| } |