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LibPDF: Implement CalGrayColorSpace

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I haven't seen this being used in the wild, but it's used in
Tests/LibPDF/colorspaces.pdf.
This commit is contained in:
Nico Weber 2023-11-02 08:49:34 -04:00 • committed by Tim Flynn
parent a207ab709a
commit 4a5136fc8c
3 changed files with 93 additions and 0 deletions
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19
Userland/Libraries/LibPDF/ColorSpace.h
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@ -123,6 +123,25 @@ private:
size_t m_number_of_components { 0 };
};
class CalGrayColorSpace final : public ColorSpace {
public:
static PDFErrorOr<NonnullRefPtr<CalGrayColorSpace>> create(Document*, Vector<Value>&& parameters);
~CalGrayColorSpace() override = default;
PDFErrorOr<Color> color(ReadonlySpan<Value> arguments) const override;
int number_of_components() const override { return 1; }
Vector<float> default_decode() const override;
ColorSpaceFamily const& family() const override { return ColorSpaceFamily::CalGray; }
private:
CalGrayColorSpace() = default;
Array<float, 3> m_whitepoint { 0, 0, 0 };
Array<float, 3> m_blackpoint { 0, 0, 0 };
float m_gamma { 1 };
};
class CalRGBColorSpace final : public ColorSpace {
public:
static PDFErrorOr<NonnullRefPtr<CalRGBColorSpace>> create(Document*, Vector<Value>&& parameters);