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LibWeb: Make DecodedImageData an abstract class

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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
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32
Userland/Libraries/LibWeb/HTML/DecodedImageData.h
View file

@ -13,32 +13,22 @@
namespace Web::HTML {
// https://html.spec.whatwg.org/multipage/images.html#img-req-data
class DecodedImageData final : public RefCounted<DecodedImageData> {
class DecodedImageData : public RefCounted<DecodedImageData> {
public:
struct Frame {
RefPtr<Gfx::Bitmap const> bitmap;
int duration { 0 };
};
virtual ~DecodedImageData();
static ErrorOr<NonnullRefPtr<DecodedImageData>> create(Vector<Frame>&&, size_t loop_count, bool animated);
~DecodedImageData();
virtual RefPtr<Gfx::Bitmap const> bitmap(size_t frame_index) const = 0;
virtual int frame_duration(size_t frame_index) const = 0;
RefPtr<Gfx::Bitmap const> bitmap(size_t frame_index) const;
int frame_duration(size_t frame_index) const;
virtual size_t frame_count() const = 0;
virtual size_t loop_count() const = 0;
virtual bool is_animated() const = 0;
size_t frame_count() const { return m_frames.size(); }
size_t loop_count() const { return m_loop_count; }
bool is_animated() const { return m_animated; }
virtual Optional<int> natural_width() const = 0;
virtual Optional<int> natural_height() const = 0;
Optional<int> natural_width() const;
Optional<int> natural_height() const;
private:
DecodedImageData(Vector<Frame>&&, size_t loop_count, bool animated);
Vector<Frame> m_frames;
size_t m_loop_count { 0 };
bool m_animated { false };
protected:
DecodedImageData();
};
}