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 THIRD_PARTY_BLINK_RENDERER_MODULES_CANVAS_CANVAS2D_CANVAS_GRADIENT_H_
28 #define THIRD_PARTY_BLINK_RENDERER_MODULES_CANVAS_CANVAS2D_CANVAS_GRADIENT_H_
29 
30 #include "third_party/blink/renderer/modules/canvas/canvas2d/identifiability_study_helper.h"
31 #include "third_party/blink/renderer/modules/modules_export.h"
32 #include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
33 #include "third_party/blink/renderer/platform/graphics/gradient.h"
34 #include "third_party/blink/renderer/platform/heap/handle.h"
35 #include "third_party/blink/renderer/platform/wtf/forward.h"
36 
37 namespace blink {
38 
39 class ExceptionState;
40 
41 class MODULES_EXPORT CanvasGradient final : public ScriptWrappable {
42   DEFINE_WRAPPERTYPEINFO();
43 
44  public:
45   // Linear Gradient
46   CanvasGradient(const FloatPoint& p0, const FloatPoint& p1);
47   // Radial Gradient
48   CanvasGradient(const FloatPoint& p0,
49                  float r0,
50                  const FloatPoint& p1,
51                  float r1);
52   // Conic Gradient
53   CanvasGradient(float startAngle, const FloatPoint& center);
54 
GetGradient()55   Gradient* GetGradient() const { return gradient_.get(); }
56 
57   void addColorStop(double value, const String& color, ExceptionState&);
58 
59   IdentifiableToken GetIdentifiableToken() const;
60 
61  private:
62   scoped_refptr<Gradient> gradient_;
63   IdentifiabilityStudyHelper identifiability_study_helper_;
64 };
65 
66 }  // namespace blink
67 
68 #endif  // THIRD_PARTY_BLINK_RENDERER_MODULES_CANVAS_CANVAS2D_CANVAS_GRADIENT_H_
69