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LibTTF: Add option to load font from a byte buffer

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Luke 2021-01-01 20:30:59 +00:00 • committed by Andreas Kling
parent 84c2be604a
commit ad243ef3aa
2 changed files with 7 additions and 1 deletions
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7
Libraries/LibTTF/Font.cpp
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@ -208,6 +208,11 @@ RefPtr<Font> Font::load_from_file(const StringView& path, unsigned index)
return nullptr; return nullptr;
} }
auto buffer = file->read_all(); auto buffer = file->read_all();
return load_from_memory(buffer, index);
}
RefPtr<Font> Font::load_from_memory(ByteBuffer& buffer, unsigned index)
{
if (buffer.size() < 4) { if (buffer.size() < 4) {
dbg() << "Font file too small"; dbg() << "Font file too small";
return nullptr; return nullptr;
@ -227,7 +232,7 @@ RefPtr<Font> Font::load_from_file(const StringView& path, unsigned index)
return nullptr; return nullptr;
} }
if (tag != 0x00010000) { if (tag != 0x00010000) {
dbg() << "Not a valid font"; dbg() << "Not a valid font";
return nullptr; return nullptr;
} }
return load_from_offset(move(buffer), 0); return load_from_offset(move(buffer), 0);

1
Libraries/LibTTF/Font.h
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@ -65,6 +65,7 @@ class Font : public RefCounted<Font> {
public: public:
static RefPtr<Font> load_from_file(const StringView& path, unsigned index = 0); static RefPtr<Font> load_from_file(const StringView& path, unsigned index = 0);
static RefPtr<Font> load_from_memory(ByteBuffer&, unsigned index = 0);
ScaledFontMetrics metrics(float x_scale, float y_scale) const; ScaledFontMetrics metrics(float x_scale, float y_scale) const;
ScaledGlyphMetrics glyph_metrics(u32 glyph_id, float x_scale, float y_scale) const; ScaledGlyphMetrics glyph_metrics(u32 glyph_id, float x_scale, float y_scale) const;