WebCore/CanvasStyle.h

   1 /*
   2  * Copyright (C) 2006, 2008 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef CanvasStyle_h
  27 #define CanvasStyle_h
  28
  29 #include "PlatformString.h"
  30
  31 namespace WebCore {
  32
  33     class CanvasGradient;
  34     class CanvasPattern;
  35     class GraphicsContext;
  36
  37     class CanvasStyle : public RefCounted<CanvasStyle> {
  38     public:
  39         static PassRefPtr<CanvasStyle> create(const String& color) { return adoptRef(new CanvasStyle(color)); }
  40         static PassRefPtr<CanvasStyle> create(float grayLevel) { return adoptRef(new CanvasStyle(grayLevel)); }
  41         static PassRefPtr<CanvasStyle> create(const String& color, float alpha) { return adoptRef(new CanvasStyle(color, alpha)); }
  42         static PassRefPtr<CanvasStyle> create(float grayLevel, float alpha) { return adoptRef(new CanvasStyle(grayLevel, alpha)); }
  43         static PassRefPtr<CanvasStyle> create(float r, float g, float b, float a) { return adoptRef(new CanvasStyle(r, g, b, a)); }
  44         static PassRefPtr<CanvasStyle> create(float c, float m, float y, float k, float a) { return adoptRef(new CanvasStyle(c, m, y, k, a)); }
  45         static PassRefPtr<CanvasStyle> create(PassRefPtr<CanvasGradient> gradient) { return adoptRef(new CanvasStyle(gradient)); }
  46         static PassRefPtr<CanvasStyle> create(PassRefPtr<CanvasPattern> pattern) { return adoptRef(new CanvasStyle(pattern)); }
  47
  48         String color() const { return m_color; }
  49         CanvasGradient* canvasGradient() const { return m_gradient.get(); }
  50         CanvasPattern* canvasPattern() const { return m_pattern.get(); }
  51
  52         void applyFillColor(GraphicsContext*);
  53         void applyStrokeColor(GraphicsContext*);
  54
  55     private:
  56         CanvasStyle(const String& color);
  57         CanvasStyle(float grayLevel);
  58         CanvasStyle(const String& color, float alpha);
  59         CanvasStyle(float grayLevel, float alpha);
  60         CanvasStyle(float r, float g, float b, float a);
  61         CanvasStyle(float c, float m, float y, float k, float a);
  62         CanvasStyle(PassRefPtr<CanvasGradient>);
  63         CanvasStyle(PassRefPtr<CanvasPattern>);
  64
  65         enum Type { ColorString, ColorStringWithAlpha, GrayLevel, RGBA, CMYKA, Gradient, ImagePattern };
  66
  67         Type m_type;
  68
  69         String m_color;
  70         RefPtr<CanvasGradient> m_gradient;
  71         RefPtr<CanvasPattern> m_pattern;
  72
  73         float m_alpha;
  74
  75         float m_grayLevel;
  76
  77         float m_red;
  78         float m_green;
  79         float m_blue;
  80
  81         float m_cyan;
  82         float m_magenta;
  83         float m_yellow;
  84         float m_black;
  85     };
  86
  87 } // namespace WebCore
  88
  89 #endif