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LibWeb: Make DecodedImageData an abstract class

The existing implementation moves down into a new subclass called
AnimatedBitmapDecodedImageData.

The purpose of this change is to create an extension point where we can
plug in an SVG renderer. :^)
This commit is contained in:
Andreas Kling 2023-05-20 16:11:36 +02:00
parent f7185dfa91
commit 4ee1e5b224
6 changed files with 108 additions and 61 deletions

View file

@ -0,0 +1,41 @@
/*
* Copyright (c) 2023, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibWeb/HTML/DecodedImageData.h>
namespace Web::HTML {
class AnimatedBitmapDecodedImageData final : public DecodedImageData {
public:
struct Frame {
RefPtr<Gfx::Bitmap const> bitmap;
int duration { 0 };
};
static ErrorOr<NonnullRefPtr<AnimatedBitmapDecodedImageData>> create(Vector<Frame>&&, size_t loop_count, bool animated);
virtual ~AnimatedBitmapDecodedImageData() override;
virtual RefPtr<Gfx::Bitmap const> bitmap(size_t frame_index) 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<int> natural_width() const override;
virtual Optional<int> natural_height() 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 };
};
}