/*******************************************************************************
* 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>
*
* @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 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
*
* @noreference This method is not intended to be referenced by clients.
*/
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
*
* @noreference This method is not intended to be referenced by clients.
*/
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 (except {@link #dispose()}) 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
*
* @noreference This method is not intended to be referenced by clients.
*/
public static Image wpf_new(Device device, int type, int handle) {
Image image = new Image(device);
image.type = type;
image.handle = handle;
return image;
}
}