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LibPDF: Use Variant<Color, PaintStyle> instead of Color for ColorSpaces

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This is in anticipation of Pattern color space support which does not
yield a simple color.
This commit is contained in:
Kyle Pereira 2023-12-05 12:51:42 +00:00 • committed by Andreas Kling
parent e4b8d68039
commit 082a4197b6
6 changed files with 116 additions and 55 deletions
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27
Userland/Libraries/LibPDF/ColorSpace.h
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@ -10,6 +10,7 @@
#include <AK/Forward.h>
#include <LibGfx/Color.h>
#include <LibGfx/ICC/Profile.h>
#include <LibGfx/PaintStyle.h>
#include <LibPDF/Function.h>
#include <LibPDF/Value.h>
@ -28,6 +29,9 @@
namespace PDF {
typedef Variant<Gfx::Color, NonnullRefPtr<Gfx::PaintStyle>> ColorOrStyle;
class Renderer;
class ColorSpaceFamily {
public:
ColorSpaceFamily(DeprecatedFlyString name, bool may_be_specified_directly)
@ -62,7 +66,7 @@ public:
virtual ~ColorSpace() = default;
virtual PDFErrorOr<Color> color(ReadonlySpan<Value> arguments) const = 0;
virtual PDFErrorOr<ColorOrStyle> style(ReadonlySpan<Value> arguments) const = 0;
virtual int number_of_components() const = 0;
virtual Vector<float> default_decode() const = 0; // "TABLE 4.40 Default Decode arrays"
virtual ColorSpaceFamily const& family() const = 0;
@ -74,7 +78,7 @@ public:
~DeviceGrayColorSpace() override = default;
PDFErrorOr<Color> color(ReadonlySpan<Value> arguments) const override;
PDFErrorOr<ColorOrStyle> style(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::DeviceGray; }
@ -89,7 +93,7 @@ public:
~DeviceRGBColorSpace() override = default;
PDFErrorOr<Color> color(ReadonlySpan<Value> arguments) const override;
PDFErrorOr<ColorOrStyle> style(ReadonlySpan<Value> arguments) const override;
int number_of_components() const override { return 3; }
Vector<float> default_decode() const override;
ColorSpaceFamily const& family() const override { return ColorSpaceFamily::DeviceRGB; }
@ -104,7 +108,7 @@ public:
~DeviceCMYKColorSpace() override = default;
PDFErrorOr<Color> color(ReadonlySpan<Value> arguments) const override;
PDFErrorOr<ColorOrStyle> style(ReadonlySpan<Value> arguments) const override;
int number_of_components() const override { return 4; }
Vector<float> default_decode() const override;
ColorSpaceFamily const& family() const override { return ColorSpaceFamily::DeviceCMYK; }
@ -119,7 +123,7 @@ public:
~DeviceNColorSpace() override = default;
PDFErrorOr<Color> color(ReadonlySpan<Value> arguments) const override;
PDFErrorOr<ColorOrStyle> style(ReadonlySpan<Value> arguments) const override;
int number_of_components() const override;
Vector<float> default_decode() const override;
ColorSpaceFamily const& family() const override { return ColorSpaceFamily::DeviceN; }
@ -140,7 +144,7 @@ public:
~CalGrayColorSpace() override = default;
PDFErrorOr<Color> color(ReadonlySpan<Value> arguments) const override;
PDFErrorOr<ColorOrStyle> style(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; }
@ -159,7 +163,7 @@ public:
~CalRGBColorSpace() override = default;
PDFErrorOr<Color> color(ReadonlySpan<Value> arguments) const override;
PDFErrorOr<ColorOrStyle> style(ReadonlySpan<Value> arguments) const override;
int number_of_components() const override { return 3; }
Vector<float> default_decode() const override;
ColorSpaceFamily const& family() const override { return ColorSpaceFamily::CalRGB; }
@ -179,7 +183,7 @@ public:
~ICCBasedColorSpace() override = default;
PDFErrorOr<Color> color(ReadonlySpan<Value> arguments) const override;
PDFErrorOr<ColorOrStyle> style(ReadonlySpan<Value> arguments) const override;
int number_of_components() const override;
Vector<float> default_decode() const override;
ColorSpaceFamily const& family() const override { return ColorSpaceFamily::ICCBased; }
@ -197,7 +201,7 @@ public:
~LabColorSpace() override = default;
PDFErrorOr<Color> color(ReadonlySpan<Value> arguments) const override;
PDFErrorOr<ColorOrStyle> style(ReadonlySpan<Value> arguments) const override;
int number_of_components() const override { return 3; }
Vector<float> default_decode() const override;
ColorSpaceFamily const& family() const override { return ColorSpaceFamily::Lab; }
@ -216,7 +220,7 @@ public:
~IndexedColorSpace() override = default;
PDFErrorOr<Color> color(ReadonlySpan<Value> arguments) const override;
PDFErrorOr<ColorOrStyle> style(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::Indexed; }
@ -235,7 +239,7 @@ public:
~SeparationColorSpace() override = default;
PDFErrorOr<Color> color(ReadonlySpan<Value> arguments) const override;
PDFErrorOr<ColorOrStyle> style(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::Separation; }
@ -248,5 +252,4 @@ private:
NonnullRefPtr<Function> m_tint_transform;
Vector<Value> mutable m_tint_output_values;
};
}