change functionality according to SVG Feature PR

This commit introduces many copied methods to bring the disablement flag to the Rasterizer. These methods need to be incorporated into the existing methods.
ImageDataProvider functionality is ignored for now.

Author: Michael5601

bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/graphics/ImageDataLoader.java

@@ -49,4 +49,10 @@ public static ElementAtZoom<ImageData> load(String filename, int fileZoom, int t
 		return data.get(0);
 	}
 
+	public static ElementAtZoom<ImageData> load(String filename, int fileZoom, int targetZoom, int flag) {
+		List<ElementAtZoom<ImageData>> data = new ImageLoader().load(filename, fileZoom, targetZoom, flag);
+		if (data.isEmpty()) SWT.error(SWT.ERROR_INVALID_IMAGE);
+		return data.get(0);
+	}
+
 }

bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/graphics/ImageDataProvider.java

@@ -43,17 +43,17 @@ public interface ImageDataProvider {
 	 */
 	ImageData getImageData (int zoom);
 
-	/**
-	* @since 4.0
-	*/
-	default ImageData getCustomizedImageData(int zoom, int flag) {
-		throw new UnsupportedOperationException();
-	}
-
-	/**
-	* @since 4.0
-	*/
-	default boolean supportsRasterizationFlag(int flag) {
-		return false;
-	}
+//	/**
+//	* @since 4.0
+//	*/
+//	default ImageData getCustomizedImageData(int zoom, int flag) {
+//		throw new UnsupportedOperationException();
+//	}
+//
+//	/**
+//	* @since 4.0
+//	*/
+//	default boolean supportsRasterizationFlag(int flag) {
+//		return false;
+//	}
 }

bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/graphics/ImageLoader.java

@@ -162,6 +162,14 @@ List<ElementAtZoom<ImageData>> load(InputStream stream, int fileZoom, int target
 	return images;
 }
 
+List<ElementAtZoom<ImageData>> load(InputStream stream, int fileZoom, int targetZoom, int flag) {
+	if (stream == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+	reset();
+	List<ElementAtZoom<ImageData>> images = InternalImageLoader.load(stream, this, fileZoom, targetZoom, flag);
+	data = images.stream().map(ElementAtZoom::element).toArray(ImageData[]::new);
+	return images;
+}
+
 /**
  * Loads an array of <code>ImageData</code> objects from the
  * file with the specified name. Throws an error if either
@@ -195,6 +203,16 @@ List<ElementAtZoom<ImageData>> load(String filename, int fileZoom, int targetZoo
 	return null;
 }
 
+List<ElementAtZoom<ImageData>> load(String filename, int fileZoom, int targetZoom, int flag) {
+	if (filename == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+	try (InputStream stream = new FileInputStream(filename)) {
+		return load(stream, fileZoom, targetZoom, flag);
+	} catch (IOException e) {
+		SWT.error(SWT.ERROR_IO, e);
+	}
+	return null;
+}
+
 /**
  * Saves the image data in this ImageLoader to the specified stream.
  * The format parameter can have one of the following values:

bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/internal/image/FileFormat.java

@@ -85,6 +85,11 @@ static abstract class StaticImageFileFormat extends FileFormat {
 		List<ElementAtZoom<ImageData>> loadFromByteStream(int fileZoom, int targetZoom) {
 			return Arrays.stream(loadFromByteStream()).map(d -> new ElementAtZoom<>(d, fileZoom)).toList();
 		}
+
+		@Override
+		List<ElementAtZoom<ImageData>> loadFromByteStream(int fileZoom, int targetZoom, int flag) {
+			return Arrays.stream(loadFromByteStream()).map(d -> new ElementAtZoom<>(d, fileZoom)).toList();
+		}
 	}
 
 	LEDataInputStream inputStream;
@@ -104,6 +109,12 @@ List<ElementAtZoom<ImageData>> loadFromByteStream(int fileZoom, int targetZoom)
 	 */
 	abstract List<ElementAtZoom<ImageData>> loadFromByteStream(int fileZoom, int targetZoom);
 
+	/**
+	 * Format that do not implement {@link StaticImageFileFormat} MUST return
+	 * {@link ImageData} with the specified {@code targetZoom}.
+	 */
+	abstract List<ElementAtZoom<ImageData>> loadFromByteStream(int fileZoom, int targetZoom, int flag);
+
 /**
  * Read the specified input stream, and return the
  * device independent image array represented by the stream.
@@ -122,6 +133,20 @@ public List<ElementAtZoom<ImageData>> loadFromStream(LEDataInputStream stream, i
 	}
 }
 
+public List<ElementAtZoom<ImageData>> loadFromStream(LEDataInputStream stream, int fileZoom, int targetZoom, int flag) {
+	try {
+		inputStream = stream;
+		return loadFromByteStream(fileZoom, targetZoom, flag);
+	} catch (Exception e) {
+		if (e instanceof IOException) {
+			SWT.error(SWT.ERROR_IO, e);
+		} else {
+			SWT.error(SWT.ERROR_INVALID_IMAGE, e);
+		}
+		return null;
+	}
+}
+
 /**
  * Read the specified input stream using the specified loader, and
  * return the device independent image array represented by the stream.
@@ -136,6 +161,20 @@ public static List<ElementAtZoom<ImageData>> load(InputStream is, ImageLoader lo
 	return fileFormat.loadFromStream(stream, fileZoom, targetZoom);
 }
 
+/**
+ * Read the specified input stream using the specified loader, and
+ * return the device independent image array represented by the stream.
+ */
+public static List<ElementAtZoom<ImageData>> load(InputStream is, ImageLoader loader, int fileZoom, int targetZoom, int flag) {
+	LEDataInputStream stream = new LEDataInputStream(is);
+	FileFormat fileFormat = determineFileFormat(stream).orElseGet(() -> {
+		SWT.error(SWT.ERROR_UNSUPPORTED_FORMAT);
+		return null;
+	});
+	fileFormat.loader = loader;
+	return fileFormat.loadFromStream(stream, fileZoom, targetZoom, flag);
+}
+
 /**
  * Write the device independent image array stored in the specified loader
  * to the specified output stream using the specified file format.

bundles/org.eclipse.swt/Eclipse SWT/common/org/eclipse/swt/internal/image/SVGFileFormat.java

@@ -44,14 +44,19 @@ boolean isFileFormat(LEDataInputStream stream) throws IOException {
 
 	@Override
 	List<ElementAtZoom<ImageData>> loadFromByteStream(int fileZoom, int targetZoom) {
+		return loadFromByteStream(fileZoom, targetZoom, SWT.IMAGE_COPY);
+	}
+
+	@Override
+	List<ElementAtZoom<ImageData>> loadFromByteStream(int fileZoom, int targetZoom, int flag) {
 		if (RASTERIZER == null) {
 			SWT.error(SWT.ERROR_UNSUPPORTED_FORMAT);
 		}
 		if (targetZoom <= 0) {
 			SWT.error(SWT.ERROR_INVALID_ARGUMENT);
 		}
 		try {
-			ImageData rasterizedImageData = RASTERIZER.rasterizeSVG(inputStream, 100 * targetZoom / fileZoom);
+			ImageData rasterizedImageData = RASTERIZER.rasterizeSVG(inputStream, 100 * targetZoom / fileZoom, flag);
 			return List.of(new ElementAtZoom<>(rasterizedImageData, targetZoom));
 		} catch (IOException e) {
 			SWT.error(SWT.ERROR_INVALID_IMAGE, e);

bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Image.java

@@ -302,24 +302,14 @@ public Image(Device device, Image srcImage, int flag) {
 }
 
 private boolean createWithSVG(Device device, int flag) {
-	ImageData data = null;
-	Image customizedImage = null;
 	if (imageProvider.getProvider() instanceof ImageFileNameProvider imageFileNameProvider) {
 		ElementAtZoom<String> fileName = DPIUtil.validateAndGetImagePathAtZoom(imageFileNameProvider, getZoom());
 		if (fileName.element().endsWith(".svg")) {
-			customizedImage = new Image(device, imageFileNameProvider, flag);
-		}
-	} else if (imageProvider.getProvider() instanceof ImageDataProvider imageDataProvider) {
-		if (imageDataProvider.supportsRasterizationFlag(flag)) {
-			customizedImage = new Image(device, imageDataProvider, flag);
+			ElementAtZoom<ImageData> imageData = ImageDataLoader.load(fileName.element(), fileName.zoom(), getZoom(), flag);
+			init(imageData.element(), getZoom());
+			return true;
 		}
 	}
-	if(customizedImage != null) {
-		data = customizedImage.getImageData(customizedImage.getZoom());
-		init(data, getZoom());
-		customizedImage.dispose();
-		return true;
-	}
 	return false;
 }
 

bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/InternalImageLoader.java

@@ -25,6 +25,10 @@ static List<ElementAtZoom<ImageData>> load(InputStream stream, ImageLoader image
 		return FileFormat.load(stream, imageLoader, fileZoom, targetZoom);
 	}
 
+	static List<ElementAtZoom<ImageData>> load(InputStream stream, ImageLoader imageLoader, int fileZoom, int targetZoom, int flag) {
+		return FileFormat.load(stream, imageLoader, fileZoom, targetZoom, flag);
+	}
+
 	static void save(OutputStream stream, int format, ImageLoader imageLoader) {
 		FileFormat.save(stream, format, imageLoader);
 	}