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1 /* | 1 /* |
2 * Copyright (C) 2011 Apple Inc. All rights reserved. | 2 * Copyright (C) 2011 Apple Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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41 m_percentage(percentage), | 41 m_percentage(percentage), |
42 m_crossfadeSize(crossfadeSize) {} | 42 m_crossfadeSize(crossfadeSize) {} |
43 | 43 |
44 void CrossfadeGeneratedImage::drawCrossfade(SkCanvas* canvas, | 44 void CrossfadeGeneratedImage::drawCrossfade(SkCanvas* canvas, |
45 const SkPaint& paint, | 45 const SkPaint& paint, |
46 ImageClampingMode clampMode) { | 46 ImageClampingMode clampMode) { |
47 FloatRect fromImageRect(FloatPoint(), FloatSize(m_fromImage->size())); | 47 FloatRect fromImageRect(FloatPoint(), FloatSize(m_fromImage->size())); |
48 FloatRect toImageRect(FloatPoint(), FloatSize(m_toImage->size())); | 48 FloatRect toImageRect(FloatPoint(), FloatSize(m_toImage->size())); |
49 FloatRect destRect((FloatPoint()), FloatSize(m_crossfadeSize)); | 49 FloatRect destRect((FloatPoint()), FloatSize(m_crossfadeSize)); |
50 | 50 |
51 // TODO(junov): The various effects encoded into paint should probably be appl
ied here | 51 // TODO(junov): The various effects encoded into paint should probably be |
52 // instead of inside the layer. This probably faulty behavior was maintained
in order | 52 // applied here instead of inside the layer. This probably faulty behavior |
53 // to preserve pre-existing behavior while refactoring this code. This should
be | 53 // was maintained in order to preserve pre-existing behavior while refactoring |
54 // investigated further. crbug.com/472634 | 54 // this code. This should be investigated further. crbug.com/472634 |
55 SkPaint layerPaint; | 55 SkPaint layerPaint; |
56 layerPaint.setXfermode(sk_ref_sp(paint.getXfermode())); | 56 layerPaint.setXfermode(sk_ref_sp(paint.getXfermode())); |
57 SkAutoCanvasRestore ar(canvas, false); | 57 SkAutoCanvasRestore ar(canvas, false); |
58 canvas->saveLayer(nullptr, &layerPaint); | 58 canvas->saveLayer(nullptr, &layerPaint); |
59 | 59 |
60 SkPaint imagePaint(paint); | 60 SkPaint imagePaint(paint); |
61 imagePaint.setXfermodeMode(SkXfermode::kSrcOver_Mode); | 61 imagePaint.setXfermodeMode(SkXfermode::kSrcOver_Mode); |
62 int imageAlpha = clampedAlphaForBlending(1 - m_percentage); | 62 int imageAlpha = clampedAlphaForBlending(1 - m_percentage); |
63 imagePaint.setAlpha(imageAlpha > 255 ? 255 : imageAlpha); | 63 imagePaint.setAlpha(imageAlpha > 255 ? 255 : imageAlpha); |
64 imagePaint.setAntiAlias(paint.isAntiAlias()); | 64 imagePaint.setAntiAlias(paint.isAntiAlias()); |
65 // TODO(junov): This code should probably be propagating the RespectImageOrien
tationEnum | 65 // TODO(junov): This code should probably be propagating the |
66 // form CrossfadeGeneratedImage::draw. Code was written this way during refact
oring to | 66 // RespectImageOrientationEnum from CrossfadeGeneratedImage::draw(). Code was |
67 // avoid modifying existing behavior, but this warrants further investigation.
crbug.com/472634 | 67 // written this way during refactoring to avoid modifying existing behavior, |
| 68 // but this warrants further investigation. crbug.com/472634 |
68 m_fromImage->draw(canvas, imagePaint, destRect, fromImageRect, | 69 m_fromImage->draw(canvas, imagePaint, destRect, fromImageRect, |
69 DoNotRespectImageOrientation, clampMode); | 70 DoNotRespectImageOrientation, clampMode); |
70 imagePaint.setXfermodeMode(SkXfermode::kPlus_Mode); | 71 imagePaint.setXfermodeMode(SkXfermode::kPlus_Mode); |
71 imageAlpha = clampedAlphaForBlending(m_percentage); | 72 imageAlpha = clampedAlphaForBlending(m_percentage); |
72 imagePaint.setAlpha(imageAlpha > 255 ? 255 : imageAlpha); | 73 imagePaint.setAlpha(imageAlpha > 255 ? 255 : imageAlpha); |
73 m_toImage->draw(canvas, imagePaint, destRect, toImageRect, | 74 m_toImage->draw(canvas, imagePaint, destRect, toImageRect, |
74 DoNotRespectImageOrientation, clampMode); | 75 DoNotRespectImageOrientation, clampMode); |
75 } | 76 } |
76 | 77 |
77 void CrossfadeGeneratedImage::draw(SkCanvas* canvas, | 78 void CrossfadeGeneratedImage::draw(SkCanvas* canvas, |
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103 | 104 |
104 SkPaint paint = context.fillPaint(); | 105 SkPaint paint = context.fillPaint(); |
105 paint.setXfermodeMode(SkXfermode::kSrcOver_Mode); | 106 paint.setXfermodeMode(SkXfermode::kSrcOver_Mode); |
106 paint.setAntiAlias(context.shouldAntialias()); | 107 paint.setAntiAlias(context.shouldAntialias()); |
107 FloatRect destRect((FloatPoint()), FloatSize(m_crossfadeSize)); | 108 FloatRect destRect((FloatPoint()), FloatSize(m_crossfadeSize)); |
108 paint.setFilterQuality(context.computeFilterQuality(this, destRect, srcRect)); | 109 paint.setFilterQuality(context.computeFilterQuality(this, destRect, srcRect)); |
109 drawCrossfade(context.canvas(), paint, ClampImageToSourceRect); | 110 drawCrossfade(context.canvas(), paint, ClampImageToSourceRect); |
110 } | 111 } |
111 | 112 |
112 } // namespace blink | 113 } // namespace blink |
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