1 /*
2  * Copyright (C) 2008 Apple Computer, 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 THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_GENERATED_IMAGE_H_
27 #define THIRD_PARTY_BLINK_RENDERER_PLATFORM_GRAPHICS_GENERATED_IMAGE_H_
28 
29 #include "third_party/blink/renderer/platform/geometry/layout_size.h"
30 #include "third_party/blink/renderer/platform/graphics/image.h"
31 #include "third_party/skia/include/core/SkRefCnt.h"
32 
33 namespace blink {
34 
35 class PLATFORM_EXPORT GeneratedImage : public Image {
36  public:
CurrentFrameHasSingleSecurityOrigin()37   bool CurrentFrameHasSingleSecurityOrigin() const override { return true; }
38 
HasIntrinsicSize()39   bool HasIntrinsicSize() const override { return false; }
40 
Size()41   IntSize Size() const override { return RoundedIntSize(size_); }
SizeAsFloat(RespectImageOrientationEnum)42   FloatSize SizeAsFloat(RespectImageOrientationEnum) const override {
43     return size_;
44   }
45 
46   // Assume that generated content has no decoded data we need to worry about
DestroyDecodedData()47   void DestroyDecodedData() override {}
48 
49   PaintImage PaintImageForCurrentFrame() override;
50 
51  protected:
52   void DrawPattern(GraphicsContext&,
53                    const FloatRect&,
54                    const FloatSize&,
55                    const FloatPoint&,
56                    SkBlendMode,
57                    const FloatRect&,
58                    const FloatSize& repeat_spacing,
59                    RespectImageOrientationEnum) final;
60   virtual sk_sp<cc::PaintShader> CreateShader(const FloatRect& tile_rect,
61                                               const SkMatrix* pattern_matrix,
62                                               const FloatRect& src_rect,
63                                               RespectImageOrientationEnum);
64 
65   // FIXME: Implement this to be less conservative.
CurrentFrameKnownToBeOpaque()66   bool CurrentFrameKnownToBeOpaque() override { return false; }
67 
GeneratedImage(const FloatSize & size)68   GeneratedImage(const FloatSize& size) : size_(size) {}
69 
70   virtual void DrawTile(GraphicsContext&,
71                         const FloatRect&,
72                         RespectImageOrientationEnum) = 0;
73 
74   FloatSize size_;
75 };
76 
77 }  // namespace blink
78 
79 #endif
80