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LibDraw: Create purgeable GraphicsBitmap in the PNG decoder

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Also add ImageDecoder APIs for controlling the volatile flag.
This commit is contained in:
Andreas Kling 2019-12-18 20:50:58 +01:00
parent 77ae98a9b6
commit 7cc4b90b16
Notes: sideshowbarker 2024-07-19 10:49:07 +09:00
3 changed files with 21 additions and 1 deletions
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5
Libraries/LibDraw/ImageDecoder.h
View file

@ -14,6 +14,9 @@ public:
virtual Size size() = 0;
virtual RefPtr<GraphicsBitmap> bitmap() = 0;
virtual void set_volatile() = 0;
[[nodiscard]] virtual bool set_nonvolatile() = 0;
protected:
ImageDecoderPlugin() {}
};
@ -27,6 +30,8 @@ public:
int width() const { return size().width(); }
int height() const { return size().height(); }
RefPtr<GraphicsBitmap> bitmap() const { return m_plugin->bitmap(); }
void set_volatile() { m_plugin->set_volatile(); }
[[nodiscard]] bool set_nonvolatile() { return m_plugin->set_nonvolatile(); }
private:
ImageDecoder(const u8*, size_t);

15
Libraries/LibDraw/PNGLoader.cpp
View file

@ -515,7 +515,7 @@ static bool decode_png_bitmap(PNGLoadingContext& context)
#ifdef PNG_STOPWATCH_DEBUG
Stopwatch sw("load_png_impl: create bitmap");
#endif
context.bitmap = GraphicsBitmap::create(context.has_alpha() ? GraphicsBitmap::Format::RGBA32 : GraphicsBitmap::Format::RGB32, { context.width, context.height });
context.bitmap = GraphicsBitmap::create_purgeable(context.has_alpha() ? GraphicsBitmap::Format::RGBA32 : GraphicsBitmap::Format::RGB32, { context.width, context.height });
}
unfilter(context);
@ -701,3 +701,16 @@ RefPtr<GraphicsBitmap> PNGImageDecoderPlugin::bitmap()
ASSERT(m_context->bitmap);
return m_context->bitmap;
}
void PNGImageDecoderPlugin::set_volatile()
{
if (m_context->bitmap)
m_context->bitmap->set_volatile();
}
bool PNGImageDecoderPlugin::set_nonvolatile()
{
if (!m_context->bitmap)
return false;
return m_context->bitmap->set_nonvolatile();
}

2
Libraries/LibDraw/PNGLoader.h
View file

@ -15,6 +15,8 @@ public:
virtual Size size() override;
virtual RefPtr<GraphicsBitmap> bitmap() override;
virtual void set_volatile() override;
[[nodiscard]] virtual bool set_nonvolatile() override;
private:
OwnPtr<PNGLoadingContext> m_context;