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1 /* | 1 /* |
2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SkBitmap.h" | 8 #include "SkBitmap.h" |
9 #include "SkBitmapCache.h" | 9 #include "SkBitmapCache.h" |
10 #include "SkCanvas.h" | 10 #include "SkCanvas.h" |
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82 // For now, and to maintain parity w/ previous pixelref behavior, we just fo
rce the image | 82 // For now, and to maintain parity w/ previous pixelref behavior, we just fo
rce the image |
83 // to produce a cached raster-bitmap form, so that drawing to a raster canva
s should be fast. | 83 // to produce a cached raster-bitmap form, so that drawing to a raster canva
s should be fast. |
84 // | 84 // |
85 SkBitmap bm; | 85 SkBitmap bm; |
86 if (as_IB(this)->getROPixels(&bm)) { | 86 if (as_IB(this)->getROPixels(&bm)) { |
87 bm.lockPixels(); | 87 bm.lockPixels(); |
88 bm.unlockPixels(); | 88 bm.unlockPixels(); |
89 } | 89 } |
90 } | 90 } |
91 | 91 |
92 SkImage* SkImage::applyFilter(SkImageFilter* filter, SkIPoint* offset, | |
93 bool forceResultToOriginalSize) const { | |
94 if (!filter) { | |
95 return nullptr; | |
96 } | |
97 | |
98 SkIPoint offsetStorage; | |
99 if (!offset) { | |
100 offset = &offsetStorage; | |
101 } | |
102 return as_IB(this)->onApplyFilter(filter, offset, forceResultToOriginalSize)
; | |
103 } | |
104 | |
105 ////////////////////////////////////////////////////////////////////////////////
/////////////////// | |
106 | |
107 #include "SkImageFilter.h" | |
108 #include "SkBitmapDevice.h" | |
109 | |
110 static SkIRect compute_fast_ibounds(SkImageFilter* filter, const SkIRect& srcBou
nds) { | |
111 SkRect fastBounds; | |
112 fastBounds.set(srcBounds); | |
113 filter->computeFastBounds(fastBounds, &fastBounds); | |
114 return fastBounds.roundOut(); | |
115 } | |
116 | |
117 class SkRasterImageFilterProxy : public SkImageFilter::Proxy { | |
118 public: | |
119 SkBaseDevice* createDevice(int width, int height) override { | |
120 return SkBitmapDevice::Create(SkImageInfo::MakeN32Premul(width, height))
; | |
121 } | |
122 | |
123 bool filterImage(const SkImageFilter*, const SkBitmap&, const SkImageFilter:
:Context&, | |
124 SkBitmap*, SkIPoint*) override { | |
125 return false; | |
126 } | |
127 }; | |
128 | |
129 SkImage* SkImage_Base::onApplyFilter(SkImageFilter* filter, SkIPoint* offsetResu
lt, | |
130 bool forceResultToOriginalSize) const { | |
131 SkBitmap src; | |
132 if (!this->getROPixels(&src)) { | |
133 return nullptr; | |
134 } | |
135 | |
136 const SkIRect srcBounds = SkIRect::MakeWH(this->width(), this->height()); | |
137 | |
138 if (forceResultToOriginalSize) { | |
139 const SkIRect clipBounds = srcBounds; | |
140 SkRasterImageFilterProxy proxy; | |
141 SkImageFilter::Context ctx(SkMatrix::I(), clipBounds, SkImageFilter::Cac
he::Get(), | |
142 SkImageFilter::kExact_SizeConstraint); | |
143 | |
144 SkBitmap dst; | |
145 if (filter->filterImage(&proxy, src, ctx, &dst, offsetResult)) { | |
146 dst.setImmutable(); | |
147 return SkImage::NewFromBitmap(dst); | |
148 } | |
149 } else { | |
150 const SkIRect dstR = compute_fast_ibounds(filter, srcBounds); | |
151 | |
152 SkImageInfo info = SkImageInfo::MakeN32Premul(dstR.width(), dstR.height(
)); | |
153 SkAutoTUnref<SkSurface> surface(this->onNewSurface(info)); | |
154 | |
155 SkPaint paint; | |
156 paint.setImageFilter(filter); | |
157 surface->getCanvas()->drawImage(this, SkIntToScalar(-dstR.x()), SkIntToS
calar(-dstR.y()), | |
158 &paint); | |
159 | |
160 offsetResult->set(dstR.x(), dstR.y()); | |
161 return surface->newImageSnapshot(); | |
162 } | |
163 return nullptr; | |
164 } | |
165 | |
166 ////////////////////////////////////////////////////////////////////////////////
/////////////////// | 92 ////////////////////////////////////////////////////////////////////////////////
/////////////////// |
167 | 93 |
168 SkShader* SkImage::newShader(SkShader::TileMode tileX, | 94 SkShader* SkImage::newShader(SkShader::TileMode tileX, |
169 SkShader::TileMode tileY, | 95 SkShader::TileMode tileY, |
170 const SkMatrix* localMatrix) const { | 96 const SkMatrix* localMatrix) const { |
171 return SkImageShader::Create(this, tileX, tileY, localMatrix); | 97 return SkImageShader::Create(this, tileX, tileY, localMatrix); |
172 } | 98 } |
173 | 99 |
174 SkData* SkImage::encode(SkImageEncoder::Type type, int quality) const { | 100 SkData* SkImage::encode(SkImageEncoder::Type type, int quality) const { |
175 SkBitmap bm; | 101 SkBitmap bm; |
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407 | 333 |
408 SkImage* SkImage::NewFromAdoptedTexture(GrContext*, const GrBackendTextureDesc&,
SkAlphaType) { | 334 SkImage* SkImage::NewFromAdoptedTexture(GrContext*, const GrBackendTextureDesc&,
SkAlphaType) { |
409 return nullptr; | 335 return nullptr; |
410 } | 336 } |
411 | 337 |
412 SkImage* SkImage::NewFromTextureCopy(GrContext*, const GrBackendTextureDesc&, Sk
AlphaType) { | 338 SkImage* SkImage::NewFromTextureCopy(GrContext*, const GrBackendTextureDesc&, Sk
AlphaType) { |
413 return nullptr; | 339 return nullptr; |
414 } | 340 } |
415 | 341 |
416 #endif | 342 #endif |
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