Add drawImage API that takes only a destination rectangle

Introduces a new method that draws the full image into a specified destination rectangle without requiring source bounds.
Consumers no longer need to call image.getBounds() to determine image dimensions, unlike the existing drawImage method
(Image image, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight), which
required knowing the image size in advance.

Author: arunjose696

bundles/org.eclipse.swt/Eclipse SWT/cocoa/org/eclipse/swt/graphics/GC.java

@@ -1189,11 +1189,53 @@ public void drawImage(Image image, int srcX, int srcY, int srcWidth, int srcHeig
 	drawImage(image, srcX, srcY, srcWidth, srcHeight, destX, destY, destWidth, destHeight, false);
 }
 
+/**
+ * Draws a image into a (potentially
+ * different sized) rectangular area in the receiver. If the source
+ * and destination areas are of differing sizes, then the source
+ * area will be stretched or shrunk to fit the destination area
+ * as it is copied. The copy fails if any part of the source rectangle
+ * lies outside the bounds of the source image, or if any of the width
+ * or height arguments are negative.
+ *
+ * @param image the source image
+ * @param destX the x coordinate in the destination to copy to
+ * @param destY the y coordinate in the destination to copy to
+ * @param destWidth the width in points of the destination rectangle
+ * @param destHeight the height in points of the destination rectangle
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the image is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if any of the width or height arguments are negative.
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ * @exception SWTError <ul>
+ *    <li>ERROR_NO_HANDLES - if no handles are available to perform the operation</li>
+ * </ul>
+ */
+public void drawImage (Image image, int destX, int destY, int destWidth, int destHeight) {
+	if (handle == null) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+	if (destWidth == 0 || destHeight == 0) return;
+	if (destWidth < 0 || destHeight < 0) {
+		SWT.error (SWT.ERROR_INVALID_ARGUMENT);
+	}
+	if (image == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+	if (image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+	drawImage(image, 0, 0, 0, 0, destX, destY, destWidth, destHeight, false);
+}
+
 void drawImage(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple) {
 	NSImage imageHandle = srcImage.handle;
 	NSSize size = imageHandle.size();
 	int imgWidth = (int)size.width;
 	int imgHeight = (int)size.height;
+	if (srcWidth == 0 && srcHeight == 0) {
+		srcWidth = imgWidth;
+		srcHeight = imgHeight;
+	}
 	if (simple) {
 		srcWidth = destWidth = imgWidth;
 		srcHeight = destHeight = imgHeight;

bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/GC.java

@@ -864,13 +864,57 @@ public void drawImage(Image image, int srcX, int srcY, int srcWidth, int srcHeig
 	Rectangle destRect = new Rectangle(destX, destY, destWidth, destHeight);
 	drawImage(image, srcX, srcY, srcWidth, srcHeight, destRect.x, destRect.y, destRect.width, destRect.height, false);
 }
+
+/**
+ * Draws a image into a (potentially
+ * different sized) rectangular area in the receiver. If the source
+ * and destination areas are of differing sizes, then the source
+ * area will be stretched or shrunk to fit the destination area
+ * as it is copied. The copy fails if any part of the source rectangle
+ * lies outside the bounds of the source image, or if any of the width
+ * or height arguments are negative.
+ *
+ * @param image the source image
+ * @param destX the x coordinate in the destination to copy to
+ * @param destY the y coordinate in the destination to copy to
+ * @param destWidth the width in points of the destination rectangle
+ * @param destHeight the height in points of the destination rectangle
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the image is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if any of the width or height arguments are negative.
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ * @exception SWTError <ul>
+ *    <li>ERROR_NO_HANDLES - if no handles are available to perform the operation</li>
+ * </ul>
+ */
+public void drawImage (Image image, int destX, int destY, int destWidth, int destHeight) {
+	if (handle == 0) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+	if (destWidth == 0 || destHeight == 0) return;
+	if (destWidth < 0 || destHeight < 0) {
+		SWT.error (SWT.ERROR_INVALID_ARGUMENT);
+	}
+	if (image == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+	if (image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+	Rectangle destRect = new Rectangle(destX, destY, destWidth, destHeight);
+	drawImage(image, 0, 0, 0, 0, destRect.x, destRect.y, destRect.width, destRect.height, false);
+}
+
 void drawImage(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple) {
 	/* Refresh Image as per zoom level, if required. */
 	srcImage.refreshImageForZoom ();
 
 	ImageData srcImageData = srcImage.getImageData();
 	int imgWidth = srcImageData.width;
 	int imgHeight = srcImageData.height;
+	if (srcWidth == 0 && srcHeight == 0) {
+		srcWidth = imgWidth;
+		srcHeight = imgHeight;
+	}
 	if (simple) {
 		srcWidth = destWidth = imgWidth;
 		srcHeight = destHeight = imgHeight;

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

@@ -1109,6 +1109,45 @@ public void drawImage (Image image, int srcX, int srcY, int srcWidth, int srcHei
 	storeAndApplyOperationForExistingHandle(new DrawScalingImageToImageOperation(image, new Rectangle(srcX, srcY, srcWidth, srcHeight), new Rectangle(destX, destY, destWidth, destHeight)));
 }
 
+/**
+ * Draws a image into a (potentially
+ * different sized) rectangular area in the receiver. If the source
+ * and destination areas are of differing sizes, then the source
+ * area will be stretched or shrunk to fit the destination area
+ * as it is copied. The copy fails if any part of the source rectangle
+ * lies outside the bounds of the source image, or if any of the width
+ * or height arguments are negative.
+ *
+ * @param image the source image
+ * @param destX the x coordinate in the destination to copy to
+ * @param destY the y coordinate in the destination to copy to
+ * @param destWidth the width in points of the destination rectangle
+ * @param destHeight the height in points of the destination rectangle
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the image is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if any of the width or height arguments are negative.
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
+ * </ul>
+ * @exception SWTError <ul>
+ *    <li>ERROR_NO_HANDLES - if no handles are available to perform the operation</li>
+ * </ul>
+ */
+public void drawImage (Image image, int destX, int destY, int destWidth, int destHeight) {
+	checkNonDisposed();
+	if (destWidth == 0 || destHeight == 0) return;
+	if (destWidth < 0 || destHeight < 0) {
+		SWT.error (SWT.ERROR_INVALID_ARGUMENT);
+	}
+	if (image == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
+	if (image.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+
+	storeAndApplyOperationForExistingHandle(new DrawScalingImageToImageOperation(image, new Rectangle(0, 0, 0, 0), new Rectangle(destX, destY, destWidth, destHeight)));
+}
+
 void drawImage(Image srcImage, int srcX, int srcY, int srcWidth, int srcHeight, int destX, int destY, int destWidth, int destHeight, boolean simple) {
 	storeAndApplyOperationForExistingHandle(new DrawImageToImageOperation(srcImage, new Rectangle(srcX, srcY, srcWidth, srcHeight), new Rectangle(destX, destY, destWidth, destHeight), simple));
 }
@@ -1213,7 +1252,10 @@ private void drawImage(Image srcImage, int srcX, int srcY, int srcWidth, int src
 		long img = gdipImage[0];
 		int imgWidth = Gdip.Image_GetWidth(img);
 		int imgHeight = Gdip.Image_GetHeight(img);
-
+		if(srcWidth==0 && srcHeight==0) {
+			srcWidth = imgWidth;
+			srcHeight = imgHeight;
+		}
 		if (simple) {
 			srcWidth = destWidth = imgWidth;
 			srcHeight = destHeight = imgHeight;