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[Refactoring] Streamline calls to Image#adaptImageDataIfDisabledOrGray() #2795

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[Refactoring] Streamline calls to Image#adaptImageDataIfDisabledOrGray() #2795

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91c9747
Streamline calls to Image#adaptImageDataIfDisabledOrGray()
ShahzaibIbrahim Nov 5, 2025
eb0405c
Implementing load logic for PlainImageDataProvider
ShahzaibIbrahim Nov 19, 2025
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71 changes: 30 additions & 41 deletions bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Image.java
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Original file line number Diff line number Diff line change
Expand Up @@ -172,8 +172,7 @@ private boolean isReusable(int width, int height) {
private Optional<ImageHandle> createHandleAtExactSize(int width, int height) {
Optional<ImageData> imageData = imageProvider.loadImageDataAtExactSize(width, height);
if (imageData.isPresent()) {
ImageData adaptedData = adaptImageDataIfDisabledOrGray(imageData.get());
ImageHandle imageHandle = init(adaptedData, -1);
ImageHandle imageHandle = init(imageData.get(), -1);
return Optional.of(imageHandle);
}
return Optional.empty();
Expand All @@ -186,9 +185,8 @@ private ImageHandle getOrCreateImageHandleAtClosestSize(int widthHint, int heigh
int imageZoom = DPIUtil.getZoomForAutoscaleProperty(Math.max(imageZoomForWidth, imageZoomForHeight));
ImageHandle bestFittingHandle = zoomLevelToImageHandle.get(imageZoom);
if (bestFittingHandle == null) {
ImageData bestFittingImageData = imageProvider.loadImageData(imageZoom).element();
ImageData adaptedData = adaptImageDataIfDisabledOrGray(bestFittingImageData);
bestFittingHandle = init(adaptedData, -1);
ImageData bestFittingImageData = imageProvider.loadImageDataWithGrayOrDisablement(imageZoom).element();
bestFittingHandle = init(bestFittingImageData, -1);
}
return bestFittingHandle;
}
Expand Down Expand Up @@ -333,21 +331,10 @@ public Image(Device device, Image srcImage, int flag) {
}
break;
}
case SWT.IMAGE_DISABLE: {
for (ImageHandle imageHandle : srcImage.zoomLevelToImageHandle.values()) {
Rectangle rect = imageHandle.getBounds();
ImageData data = srcImage.getImageData(imageHandle.zoom);
ImageData newData = applyDisableImageData(data, rect.height, rect.width);
init (newData, imageHandle.zoom);
}
break;
}
case SWT.IMAGE_DISABLE:
case SWT.IMAGE_GRAY: {
for (ImageHandle imageHandle : srcImage.zoomLevelToImageHandle.values()) {
Rectangle rect = imageHandle.getBounds();
ImageData data = srcImage.getImageData(imageHandle.zoom);
ImageData newData = applyGrayImageData(data, rect.height, rect.width);
init (newData, imageHandle.zoom);
srcImage.getImageData(imageHandle.zoom);
}
Comment on lines +334 to 338
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@ShahzaibIbrahim ShahzaibIbrahim Nov 19, 2025

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Now we only need to reload the data for other handle if exist in order to apply gray or disable image data.

break;
}
Expand Down Expand Up @@ -698,9 +685,9 @@ public Image(Device device, ImageGcDrawer imageGcDrawer, int width, int height)
init();
}

private ImageData adaptImageDataIfDisabledOrGray(ImageData data) {
private static ImageData adaptImageDataIfDisabledOrGray(ImageData data, int styleFlag) {
ImageData returnImageData = null;
switch (this.styleFlag) {
switch (styleFlag) {
case SWT.IMAGE_DISABLE: {
ImageData newData = applyDisableImageData(data, data.height, data.width);
returnImageData = newData;
Expand All @@ -726,7 +713,7 @@ void init() {
this.isInitialized = true;
}

private ImageData applyDisableImageData(ImageData data, int height, int width) {
private static ImageData applyDisableImageData(ImageData data, int height, int width) {
PaletteData palette = data.palette;
ImageData newData = new ImageData(width, height, 32, new PaletteData(0xFF, 0xFF00, 0xFF0000));
newData.alpha = data.alpha;
Expand Down Expand Up @@ -775,7 +762,7 @@ private ImageData applyDisableImageData(ImageData data, int height, int width) {
return newData;
}

private ImageData applyGrayImageData(ImageData data, int pHeight, int pWidth) {
private static ImageData applyGrayImageData(ImageData data, int pHeight, int pWidth) {
PaletteData palette = data.palette;
ImageData newData = data;
if (!palette.isDirect) {
Expand Down Expand Up @@ -1456,7 +1443,7 @@ private static ImageData directToDirect(ImageData src, int newDepth, PaletteData

private record HandleForImageDataContainer(int type, ImageData imageData, long[] handles) {}

private static HandleForImageDataContainer init(Device device, ImageData i) {
private static HandleForImageDataContainer init(Device device, ImageData i, int styleFlag) {
/* Windows does not support 2-bit images. Convert to 4-bit image. */
if (i.depth == 2) {
i = indexToIndex(i, 4);
Expand Down Expand Up @@ -1665,7 +1652,7 @@ private void setImageMetadataForHandle(ImageHandle imageMetadata, int zoom) {

private ImageHandle initIconHandle(Device device, ImageData source, ImageData mask, Integer zoom) {
ImageData imageData = applyMask(source, mask);
HandleForImageDataContainer imageDataHandle = init(device, imageData);
HandleForImageDataContainer imageDataHandle = init(device, imageData, this.styleFlag);
return initIconHandle(imageDataHandle.handles, zoom);
}

Expand All @@ -1690,7 +1677,7 @@ private ImageHandle initBitmapHandle(ImageData imageData, long handle, Integer z

static long [] initIcon(Device device, ImageData source, ImageData mask) {
ImageData imageData = applyMask(source, mask);
return init(device, imageData).handles;
return init(device, imageData, SWT.NONE).handles;
}

private static ImageData applyMask(ImageData source, ImageData mask) {
Expand Down Expand Up @@ -1770,7 +1757,7 @@ private static ImageData applyMask(ImageData source, ImageData mask) {

private ImageHandle init(ImageData i, int zoom) {
if (i == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
HandleForImageDataContainer imageDataHandle = init(device, i);
HandleForImageDataContainer imageDataHandle = init(device, i, this.styleFlag);
switch (imageDataHandle.type()) {
case SWT.ICON: {
return initIconHandle(imageDataHandle.handles(), zoom);
Expand Down Expand Up @@ -2007,6 +1994,11 @@ public Collection<Integer> getPreservedZoomLevels() {

protected abstract ElementAtZoom<ImageData> loadImageData(int zoom);

protected ElementAtZoom<ImageData> loadImageDataWithGrayOrDisablement(int zoom) {
ElementAtZoom<ImageData> imageDataAtZoom = loadImageData(zoom);
return new ElementAtZoom<>(adaptImageDataIfDisabledOrGray(imageDataAtZoom.element(), styleFlag), imageDataAtZoom.zoom());
}

abstract ImageData newImageData(ZoomContext zoomContext);

abstract AbstractImageProviderWrapper createCopy(Image image);
Expand Down Expand Up @@ -2119,9 +2111,8 @@ protected ImageHandle newImageHandle(ZoomContext zoomContext) {
}

private ImageHandle initializeHandleFromSource(ZoomContext zoomContext) {
ElementAtZoom<ImageData> imageDataAtZoom = loadImageData(zoomContext.targetZoom());
ElementAtZoom<ImageData> imageDataAtZoom = loadImageDataWithGrayOrDisablement(zoomContext.targetZoom());
ImageData imageData = DPIUtil.scaleImageData(device, imageDataAtZoom.element(), zoomContext.targetZoom(), imageDataAtZoom.zoom());
imageData = adaptImageDataIfDisabledOrGray(imageData);
return newImageHandle(imageData, zoomContext);
}
}
Expand Down Expand Up @@ -2271,21 +2262,20 @@ protected Rectangle getBounds(int zoom) {

@Override
ImageData newImageData(ZoomContext zoomContext) {
int targetZoom = zoomContext.targetZoom();
return loadImageDataWithGrayOrDisablement(zoomContext.targetZoom()).element();
}

@Override
protected ElementAtZoom<ImageData> loadImageData(int targetZoom) {
if (zoomLevelToImageHandle.isEmpty()) {
return createBaseHandle(targetZoom).getImageData();
return new ElementAtZoom<> (createBaseHandle(targetZoom).getImageData(), targetZoom);
}
// if a GC is initialized with an Image (memGC != null), the image data must not be resized, because it would
// be a destructive operation. Therefor, a new handle is created for the requested zoom
if (memGC != null) {
return newImageHandle(zoomContext).getImageData();
return new ElementAtZoom<> (newImageHandle(new ZoomContext(targetZoom)).getImageData(), targetZoom);
}
return getScaledImageData(targetZoom);
}

@Override
protected ElementAtZoom<ImageData> loadImageData(int zoom) {
return getClosestAvailableImageData(zoom);
return new ElementAtZoom<> (getScaledImageData(targetZoom), targetZoom);
}

@Override
Expand Down Expand Up @@ -2413,9 +2403,8 @@ protected ImageHandle newImageHandle(ZoomContext zoomContext) {
}

private ImageHandle initializeHandleFromSource(int zoom) {
ElementAtZoom<ImageData> imageDataAtZoom = loadImageData(zoom);
ElementAtZoom<ImageData> imageDataAtZoom = loadImageDataWithGrayOrDisablement(zoom);
ImageData imageData = DPIUtil.scaleImageData (device, imageDataAtZoom.element(), zoom, imageDataAtZoom.zoom());
imageData = adaptImageDataIfDisabledOrGray(imageData);
return init(imageData, zoom);
}

Expand Down Expand Up @@ -2736,7 +2725,7 @@ protected long configureGCData(GCData data) {

@Override
ImageData newImageData(ZoomContext zoomContext) {
return loadImageData(zoomContext.targetZoom).element();
return loadImageDataWithGrayOrDisablement(zoomContext.targetZoom).element();
}

@Override
Expand Down Expand Up @@ -2765,7 +2754,7 @@ protected ImageHandle newImageHandle(ZoomContext zoomContext) {
drawer.drawOn(gc, width, height);
ImageData imageData = image.getImageData(targetZoom);
drawer.postProcess(imageData);
ImageData newData = adaptImageDataIfDisabledOrGray(imageData);
ImageData newData = adaptImageDataIfDisabledOrGray(imageData, styleFlag);
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@ShahzaibIbrahim ShahzaibIbrahim Nov 19, 2025

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I still have to keep it because a new image is created here with plainImageDataProvider which loads the data directly from handle. I am open to suggestions here.

return init(newData, targetZoom);
} finally {
gc.dispose();
Expand Down
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