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| 25 | |
| 26 | #include "config.h" |
| 27 | #include "ShareableBitmapUtilities.h" |
| 28 | |
| 29 | #include <WebCore/CachedImage.h> |
| 30 | #include <WebCore/FrameSnapshotting.h> |
| 31 | #include <WebCore/GeometryUtilities.h> |
| 32 | #include <WebCore/GraphicsContext.h> |
| 33 | #include <WebCore/HTMLVideoElement.h> |
| 34 | #include <WebCore/ImageBuffer.h> |
| 35 | #include <WebCore/IntSize.h> |
| 36 | #include <WebCore/LocalFrame.h> |
| 37 | #include <WebCore/NativeImage.h> |
| 38 | #include <WebCore/PlatformScreen.h> |
| 39 | #include <WebCore/RenderElementStyleInlines.h> |
| 40 | #include <WebCore/RenderImage.h> |
| 41 | #include <WebCore/RenderObjectInlines.h> |
| 42 | #include <WebCore/RenderVideo.h> |
| 43 | #include <WebCore/ShareableBitmap.h> |
| 44 | #include <wtf/NativePromise.h> |
| 45 | |
| 46 | namespace WebKit { |
| 47 | using namespace WebCore; |
| 48 | |
| 49 | RefPtr<ShareableBitmap> createShareableBitmap(RenderImage& renderImage, CreateShareableBitmapFromImageOptions&& options) |
| 50 | { |
| 51 | Ref frame = renderImage.frame(); |
| 52 | auto colorSpaceForBitmap = screenColorSpace(protect(protect(frame->mainFrame())->virtualView()).get()); |
| 53 | if (!renderImage.isRenderMedia() && !renderImage.opacity() && options.useSnapshotForTransparentImages == UseSnapshotForTransparentImages::Yes) { |
| 54 | auto snapshotRect = renderImage.absoluteBoundingBoxRect(); |
| 55 | if (snapshotRect.isEmpty()) |
| 56 | return { }; |
| 57 | |
| 58 | OptionSet<SnapshotFlags> snapshotFlags { SnapshotFlags::ExcludeSelectionHighlighting, SnapshotFlags::PaintEverythingExcludingSelection }; |
| 59 | auto imageBuffer = snapshotFrameRect(frame.get(), snapshotRect, { snapshotFlags, PixelFormat::BGRA8, DestinationColorSpace::SRGB() }); |
| 60 | if (!imageBuffer) |
| 61 | return { }; |
| 62 | |
| 63 | auto snapshotImage = ImageBuffer::sinkIntoNativeImage(WTF::move(imageBuffer)); |
| 64 | if (!snapshotImage) |
| 65 | return { }; |
| 66 | |
| 67 | auto bitmap = ShareableBitmap::create({ snapshotImage->size(), WTF::move(colorSpaceForBitmap) }); |
| 68 | if (!bitmap) |
| 69 | return { }; |
| 70 | |
| 71 | auto context = bitmap->createGraphicsContext(); |
| 72 | if (!context) |
| 73 | return { }; |
| 74 | FloatRect imageRect { { }, snapshotImage->size() }; |
| 75 | context->drawNativeImage(*snapshotImage, imageRect, imageRect); |
| 76 | return bitmap; |
| 77 | } |
| 78 | |
| 79 | #if ENABLE(VIDEO) |
| 80 | if (auto* renderVideo = dynamicDowncast<RenderVideo>(renderImage)) |
| 81 | return protect(renderVideo->videoElement())->bitmapImageForCurrentTimeSync(); |
| 82 | #endif // ENABLE(VIDEO) |
| 83 | |
| 84 | auto* cachedImage = renderImage.cachedImage(); |
| Local variable 'cachedImage' is uncounted and unsafe |
| 85 | if (!cachedImage || cachedImage->errorOccurred()) |
| 86 | return { }; |
| 87 | |
| 88 | RefPtr image = cachedImage->imageForRenderer(&renderImage); |
| 89 | if (!image || image->width() <= 1 || image->height() <= 1) |
| 90 | return { }; |
| 91 | |
| 92 | if (options.allowAnimatedImages == AllowAnimatedImages::No && image->isAnimated()) |
| 93 | return { }; |
| 94 | |
| 95 | auto bitmapSize = cachedImage->imageSizeForRenderer(&renderImage); |
| 96 | if (options.screenSizeInPixels) { |
| 97 | auto scaledSize = largestRectWithAspectRatioInsideRect(bitmapSize.width() / bitmapSize.height(), { FloatPoint(), *options.screenSizeInPixels }).size(); |
| 98 | bitmapSize = scaledSize.width() < bitmapSize.width() ? scaledSize : bitmapSize; |
| 99 | } |
| 100 | |
| 101 | |
| 102 | auto sharedBitmap = ShareableBitmap::create({ IntSize(bitmapSize), WTF::move(colorSpaceForBitmap) }); |
| 103 | if (!sharedBitmap) |
| 104 | return { }; |
| 105 | |
| 106 | auto graphicsContext = sharedBitmap->createGraphicsContext(); |
| 107 | if (!graphicsContext) |
| 108 | return { }; |
| 109 | |
| 110 | graphicsContext->drawImage(*image, FloatRect(0, 0, bitmapSize.width(), bitmapSize.height()), { renderImage.imageOrientation() }); |
| 111 | return sharedBitmap; |
| 112 | } |
| 113 | |
| 114 | Ref<NativePromise<Ref<WebCore::ShareableBitmap>, void>> createShareableBitmapAsync(WebCore::RenderImage& renderImage, CreateShareableBitmapFromImageOptions&& options) |
| 115 | { |
| 116 | if (auto* renderVideo = dynamicDowncast<RenderVideo>(renderImage)) |
| 117 | return protect(renderVideo->videoElement())->bitmapImageForCurrentTime(); |
| 118 | if (RefPtr shareableBitmap = createShareableBitmap(renderImage, WTF::move(options))) |
| 119 | return NativePromise<Ref<WebCore::ShareableBitmap>, void>::createAndResolve(shareableBitmap.releaseNonNull()); |
| 120 | return NativePromise<Ref<WebCore::ShareableBitmap>, void>::createAndReject(); |
| 121 | } |
| 122 | |
| 123 | } |