119 lines
2.7 KiB
C++
119 lines
2.7 KiB
C++
/*
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* Copyright 2006-2009, Haiku Inc. All rights reserved.
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* Distributed under the terms of the MIT license.
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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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// WARNING! This is experimental API and may change! Be prepared to
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// recompile your software in a next version of haiku. In particular,
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// the offsets are currently specified on [0..255], but may be changed
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// to the interval [0..1]. This class also does not have any FBC padding,
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// So your software will definitely break when this class gets new
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// virtuals. And the object size may change too...
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class BGradient : public BArchivable {
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public:
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enum Type {
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TYPE_LINEAR = 0,
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TYPE_RADIAL,
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TYPE_RADIAL_FOCUS,
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TYPE_DIAMOND,
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TYPE_CONIC,
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TYPE_NONE
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};
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struct ColorStop {
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ColorStop(const rgb_color c, float o);
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ColorStop(uint8 r, uint8 g, uint8 b, uint8 a, float o);
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ColorStop(const ColorStop& other);
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ColorStop();
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bool operator!=(const ColorStop& other) const;
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rgb_color color;
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float offset;
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};
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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,
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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 ColorStopsAreEqual(
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const BGradient& other) const;
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void SetColorStops(const BGradient& other);
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int32 AddColor(const rgb_color& color,
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float offset);
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bool AddColorStop(const ColorStop& colorStop,
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int32 index);
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bool RemoveColor(int32 index);
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bool SetColorStop(int32 index,
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const ColorStop& colorStop);
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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 CountColorStops() const;
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ColorStop* ColorStopAt(int32 index) const;
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ColorStop* ColorStopAtFast(int32 index) const;
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ColorStop* ColorStops() const;
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void SortColorStopsByOffset();
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Type GetType() 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 fColorStops;
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Type fType;
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};
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#endif // _GRADIENT_H
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