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LibWeb: Add API to allow DecodedImageData to paint itself directly

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Instead of painting DecodedImageData by first asking it for a bitmap
and then painting that, this commit adds two new APIs:

- frame_rect(frame_index):

    Gets the size of the animation frame at the given index.

- paint(context, ...):

    Paints the DecodedImageData into a DisplayListRecordingContext.

The main powerful thing here is that this allows SVGDecodedImageData
to render itself using the GPU when available.
This commit is contained in:
Andreas Kling
2025-11-04 21:20:00 +01:00
committed by Andreas Kling
parent cebd4cc10d
commit 4c2a02370d
Notes: github-actions[bot] 2025-11-05 08:13:04 +00:00 
Author: https://github.com/awesomekling
Commit: https://github.com/LadybirdBrowser/ladybird/commit/4c2a02370d9
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/6699
Reviewed-by: https://github.com/kalenikaliaksandr
6 changed files with 97 additions and 5 deletions
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3
Libraries/LibWeb/HTML/AnimatedBitmapDecodedImageData.h
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@@ -35,6 +35,9 @@ public:
virtual Optional<CSSPixels> intrinsic_height() const override;
virtual Optional<CSSPixelFraction> intrinsic_aspect_ratio() const override;
virtual Optional<Gfx::IntRect> frame_rect(size_t frame_index) const override;
virtual void paint(DisplayListRecordingContext&, size_t frame_index, Gfx::IntRect dst_rect, Gfx::IntRect clip_rect, Gfx::ScalingMode scaling_mode) const override;
private:
AnimatedBitmapDecodedImageData(Vector<Frame>&&, size_t loop_count, bool animated);