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LibGfx+ImageViewer: Replace ImageDecoder::is_vector() with an enum

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That makes it easier to extend to other special frame formats.
This commit is contained in:
Nico Weber 2024-01-07 20:41:32 -05:00 • committed by Andreas Kling
parent a47edb4ed1
commit c997ee7b9d
3 changed files with 11 additions and 4 deletions
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2
Userland/Applications/ImageViewer/ViewWidget.cpp
View file

@ -224,7 +224,7 @@ ErrorOr<void> ViewWidget::try_open_file(String const& path, Core::File& file)
Vector<Animation::Frame> frames;
// Note: Doing this check only requires reading the header of images
// (so if the image is not vector graphics it can be still be decoded OOP).
if (auto decoder = Gfx::ImageDecoder::try_create_for_raw_bytes(file_data); decoder && decoder->is_vector()) {
if (auto decoder = Gfx::ImageDecoder::try_create_for_raw_bytes(file_data); decoder && decoder->natural_frame_format() == Gfx::NaturalFrameFormat::Vector) {
// Use in-process decoding for vector graphics.
is_animated = decoder->is_animated();
loop_count = decoder->loop_count();

11
Userland/Libraries/LibGfx/ImageFormats/ImageDecoder.h
View file

@ -28,6 +28,11 @@ struct VectorImageFrameDescriptor {
int duration { 0 };
};
enum class NaturalFrameFormat {
RGB,
Vector,
};
class ImageDecoderPlugin {
public:
virtual ~ImageDecoderPlugin() = default;
@ -53,7 +58,7 @@ public:
virtual ErrorOr<ImageFrameDescriptor> frame(size_t index, Optional<IntSize> ideal_size = {}) = 0;
virtual ErrorOr<Optional<ReadonlyBytes>> icc_data() { return OptionalNone {}; }
virtual bool is_vector() { return false; }
virtual NaturalFrameFormat natural_frame_format() const { return NaturalFrameFormat::RGB; }
virtual ErrorOr<VectorImageFrameDescriptor> vector_frame(size_t) { VERIFY_NOT_REACHED(); }
protected:
@ -75,7 +80,9 @@ public:
ErrorOr<ImageFrameDescriptor> frame(size_t index, Optional<IntSize> ideal_size = {}) const { return m_plugin->frame(index, ideal_size); }
ErrorOr<Optional<ReadonlyBytes>> icc_data() const { return m_plugin->icc_data(); }
bool is_vector() { return m_plugin->is_vector(); }
NaturalFrameFormat natural_frame_format() { return m_plugin->natural_frame_format(); }
// Call only if natural_frame_format() == NaturalFrameFormat::Vector.
ErrorOr<VectorImageFrameDescriptor> vector_frame(size_t index) { return m_plugin->vector_frame(index); }
private:

2
Userland/Libraries/LibGfx/ImageFormats/TinyVGLoader.h
View file

@ -83,7 +83,7 @@ public:
virtual IntSize size() override;
virtual ErrorOr<ImageFrameDescriptor> frame(size_t index, Optional<IntSize> ideal_size = {}) override;
virtual bool is_vector() override { return true; }
virtual NaturalFrameFormat natural_frame_format() const override { return NaturalFrameFormat::Vector; }
virtual ErrorOr<VectorImageFrameDescriptor> vector_frame(size_t index) override;
virtual ~TinyVGImageDecoderPlugin() override = default;