111 lines
2.2 KiB
C++
111 lines
2.2 KiB
C++
/*
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* Copyright 2006-2008, Haiku.
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* Distributed under the terms of the MIT License.
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*
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* Authors:
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* Stephan Aßmus <superstippi@gmx.de>
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* Artur Wyszynski <harakash@gmail.com>
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*/
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#ifndef GRADIENT_H
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#define GRADIENT_H
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#include <Archivable.h>
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#include <GraphicsDefs.h>
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#include <List.h>
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class BMessage;
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class BRect;
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enum gradient_type {
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B_GRADIENT_LINEAR = 0,
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B_GRADIENT_RADIAL,
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B_GRADIENT_RADIAL_FOCUS,
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B_GRADIENT_DIAMOND,
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B_GRADIENT_CONIC,
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B_GRADIENT_NONE
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};
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struct color_step {
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color_step(const rgb_color c, float o);
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color_step(uint8 r, uint8 g, uint8 b, uint8 a, float o);
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color_step(const color_step& other);
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color_step();
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bool operator!=(const color_step& other) const;
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rgb_color color;
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float offset;
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};
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class BGradient : public BArchivable {
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public:
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BGradient();
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BGradient(BMessage* archive);
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virtual ~BGradient();
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status_t Archive(BMessage* into, bool deep = true) const;
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BGradient& operator=(const BGradient& other);
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bool operator==(const BGradient& other) const;
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bool operator!=(const BGradient& other) const;
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bool ColorStepsAreEqual(const BGradient& other) const;
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void SetColors(const BGradient& other);
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int32 AddColor(const rgb_color& color, float offset);
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bool AddColor(const color_step& color, int32 index);
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bool RemoveColor(int32 index);
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bool SetColor(int32 index, const color_step& step);
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bool SetColor(int32 index, const rgb_color& color);
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bool SetOffset(int32 index, float offset);
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int32 CountColors() const;
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color_step* ColorAt(int32 index) const;
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color_step* ColorAtFast(int32 index) const;
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color_step* Colors() const;
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void SortColorStepsByOffset();
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gradient_type Type() const
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{ return fType; }
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void MakeEmpty();
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private:
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friend class BGradientLinear;
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friend class BGradientRadial;
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friend class BGradientRadialFocus;
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friend class BGradientDiamond;
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friend class BGradientConic;
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union {
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struct {
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float x1, y1, x2, y2;
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} linear;
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struct {
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float cx, cy, radius;
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} radial;
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struct {
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float cx, cy, fx, fy, radius;
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} radial_focus;
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struct {
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float cx, cy;
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} diamond;
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struct {
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float cx, cy, angle;
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} conic;
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} fData;
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BList fColors;
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gradient_type fType;
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};
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#endif // GRADIENT_H
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