ladybird/Libraries/LibWeb/HTML/AnimatedBitmapDecodedImageData.h
Andreas Kling 4c2a02370d LibWeb: Add API to allow DecodedImageData to paint itself directly
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.
2025-11-05 09:11:49 +01:00

49 lines
1.7 KiB
C++

/*
* Copyright (c) 2023, Andreas Kling <andreas@ladybird.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibGfx/ImmutableBitmap.h>
#include <LibWeb/HTML/DecodedImageData.h>
namespace Web::HTML {
class AnimatedBitmapDecodedImageData final : public DecodedImageData {
GC_CELL(AnimatedBitmapDecodedImageData, DecodedImageData);
GC_DECLARE_ALLOCATOR(AnimatedBitmapDecodedImageData);
public:
struct Frame {
RefPtr<Gfx::ImmutableBitmap> bitmap;
int duration { 0 };
};
static ErrorOr<GC::Ref<AnimatedBitmapDecodedImageData>> create(JS::Realm&, Vector<Frame>&&, size_t loop_count, bool animated);
virtual ~AnimatedBitmapDecodedImageData() override;
virtual RefPtr<Gfx::ImmutableBitmap> bitmap(size_t frame_index, Gfx::IntSize = {}) const override;
virtual int frame_duration(size_t frame_index) const override;
virtual size_t frame_count() const override { return m_frames.size(); }
virtual size_t loop_count() const override { return m_loop_count; }
virtual bool is_animated() const override { return m_animated; }
virtual Optional<CSSPixels> intrinsic_width() const override;
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);
Vector<Frame> m_frames;
size_t m_loop_count { 0 };
bool m_animated { false };
};
}