WebCore/CanvasGradient.h

   1 /*
   2  * Copyright (C) 2006, 2007, 2008 Apple Computer, Inc.  All rights reserved.
   3  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  17  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  18  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  19  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  20  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  21  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  22  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  24  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  25  */
  26
  27 #ifndef CanvasGradient_h
  28 #define CanvasGradient_h
  29
  30 #include "Gradient.h"
  31 #include <wtf/PassRefPtr.h>
  32 #include <wtf/RefCounted.h>
  33
  34 namespace WebCore {
  35
  36     class String;
  37
  38     typedef int ExceptionCode;
  39
  40     class CanvasGradient : public RefCounted<CanvasGradient> {
  41     public:
  42         static PassRefPtr<CanvasGradient> create(const FloatPoint& p0, const FloatPoint& p1)
  43         {
  44             return adoptRef(new CanvasGradient(p0, p1));
  45         }
  46         static PassRefPtr<CanvasGradient> create(const FloatPoint& p0, float r0, const FloatPoint& p1, float r1)
  47         {
  48             return adoptRef(new CanvasGradient(p0, r0, p1, r1));
  49         }
  50
  51         Gradient* gradient() const { return m_gradient.get(); }
  52
  53         void addColorStop(float value, const String& color, ExceptionCode&);
  54
  55         void getColor(float value, float* r, float* g, float* b, float* a) const { m_gradient->getColor(value, r, g, b, a); }
  56
  57     private:
  58         CanvasGradient(const FloatPoint& p0, const FloatPoint& p1);
  59         CanvasGradient(const FloatPoint& p0, float r0, const FloatPoint& p1, float r1);
  60
  61         RefPtr<Gradient> m_gradient;
  62     };
  63
  64 } //namespace
  65
  66 #endif