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1 /* | 1 /* |
2 * Copyright 2012 The Android Open Source Project | 2 * Copyright 2012 The Android Open Source Project |
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 "SkMagnifierImageFilter.h" | 9 #include "SkMagnifierImageFilter.h" |
10 #include "SkColorPriv.h" | 10 #include "SkColorPriv.h" |
11 #include "SkReadBuffer.h" | 11 #include "SkReadBuffer.h" |
12 #include "SkWriteBuffer.h" | 12 #include "SkWriteBuffer.h" |
13 #include "SkValidationUtils.h" | 13 #include "SkValidationUtils.h" |
14 | 14 |
15 //////////////////////////////////////////////////////////////////////////////// | 15 //////////////////////////////////////////////////////////////////////////////// |
16 #if SK_SUPPORT_GPU | 16 #if SK_SUPPORT_GPU |
17 #include "GrInvariantOutput.h" | 17 #include "GrInvariantOutput.h" |
18 #include "effects/GrSingleTextureEffect.h" | 18 #include "effects/GrSingleTextureEffect.h" |
19 #include "gl/GrGLFragmentProcessor.h" | 19 #include "gl/GrGLFragmentProcessor.h" |
20 #include "gl/GrGLTexture.h" | 20 #include "gl/GrGLTexture.h" |
21 #include "gl/builders/GrGLProgramBuilder.h" | 21 #include "gl/builders/GrGLProgramBuilder.h" |
22 | 22 |
23 class GrMagnifierEffect : public GrSingleTextureEffect { | 23 class GrMagnifierEffect : public GrSingleTextureEffect { |
24 | 24 |
25 public: | 25 public: |
26 static GrFragmentProcessor* Create(GrProcessorDataManager* procDataManager, | 26 static GrFragmentProcessor* Create(GrTexture* texture, |
27 GrTexture* texture, | |
28 const SkRect& bounds, | 27 const SkRect& bounds, |
29 float xOffset, | 28 float xOffset, |
30 float yOffset, | 29 float yOffset, |
31 float xInvZoom, | 30 float xInvZoom, |
32 float yInvZoom, | 31 float yInvZoom, |
33 float xInvInset, | 32 float xInvInset, |
34 float yInvInset) { | 33 float yInvInset) { |
35 return new GrMagnifierEffect(procDataManager, texture, bounds, xOffset,
yOffset, xInvZoom, | 34 return new GrMagnifierEffect(texture, bounds, xOffset, yOffset, xInvZoom
, yInvZoom, xInvInset, |
36 yInvZoom, xInvInset, yInvInset); | 35 yInvInset); |
37 } | 36 } |
38 | 37 |
39 virtual ~GrMagnifierEffect() {}; | 38 virtual ~GrMagnifierEffect() {}; |
40 | 39 |
41 const char* name() const override { return "Magnifier"; } | 40 const char* name() const override { return "Magnifier"; } |
42 | 41 |
43 const SkRect& bounds() const { return fBounds; } // Bounds of source imag
e. | 42 const SkRect& bounds() const { return fBounds; } // Bounds of source imag
e. |
44 // Offset to apply to zoomed pixels, (srcRect position / texture size). | 43 // Offset to apply to zoomed pixels, (srcRect position / texture size). |
45 float x_offset() const { return fXOffset; } | 44 float x_offset() const { return fXOffset; } |
46 float y_offset() const { return fYOffset; } | 45 float y_offset() const { return fYOffset; } |
47 | 46 |
48 // Scale to apply to zoomed pixels (srcRect size / bounds size). | 47 // Scale to apply to zoomed pixels (srcRect size / bounds size). |
49 float x_inv_zoom() const { return fXInvZoom; } | 48 float x_inv_zoom() const { return fXInvZoom; } |
50 float y_inv_zoom() const { return fYInvZoom; } | 49 float y_inv_zoom() const { return fYInvZoom; } |
51 | 50 |
52 // 1/radius over which to transition from unzoomed to zoomed pixels (bounds
size / inset). | 51 // 1/radius over which to transition from unzoomed to zoomed pixels (bounds
size / inset). |
53 float x_inv_inset() const { return fXInvInset; } | 52 float x_inv_inset() const { return fXInvInset; } |
54 float y_inv_inset() const { return fYInvInset; } | 53 float y_inv_inset() const { return fYInvInset; } |
55 | 54 |
56 private: | 55 private: |
57 GrMagnifierEffect(GrProcessorDataManager* procDataManager, | 56 GrMagnifierEffect(GrTexture* texture, |
58 GrTexture* texture, | |
59 const SkRect& bounds, | 57 const SkRect& bounds, |
60 float xOffset, | 58 float xOffset, |
61 float yOffset, | 59 float yOffset, |
62 float xInvZoom, | 60 float xInvZoom, |
63 float yInvZoom, | 61 float yInvZoom, |
64 float xInvInset, | 62 float xInvInset, |
65 float yInvInset) | 63 float yInvInset) |
66 : INHERITED(procDataManager, texture, GrCoordTransform::MakeDivByTexture
WHMatrix(texture)) | 64 : INHERITED(texture, GrCoordTransform::MakeDivByTextureWHMatrix(texture)
) |
67 , fBounds(bounds) | 65 , fBounds(bounds) |
68 , fXOffset(xOffset) | 66 , fXOffset(xOffset) |
69 , fYOffset(yOffset) | 67 , fYOffset(yOffset) |
70 , fXInvZoom(xInvZoom) | 68 , fXInvZoom(xInvZoom) |
71 , fYInvZoom(yInvZoom) | 69 , fYInvZoom(yInvZoom) |
72 , fXInvInset(xInvInset) | 70 , fXInvInset(xInvInset) |
73 , fYInvInset(yInvInset) { | 71 , fYInvInset(yInvInset) { |
74 this->initClassID<GrMagnifierEffect>(); | 72 this->initClassID<GrMagnifierEffect>(); |
75 } | 73 } |
76 | 74 |
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200 const int kMaxWidth = 200; | 198 const int kMaxWidth = 200; |
201 const int kMaxHeight = 200; | 199 const int kMaxHeight = 200; |
202 const int kMaxInset = 20; | 200 const int kMaxInset = 20; |
203 uint32_t width = d->fRandom->nextULessThan(kMaxWidth); | 201 uint32_t width = d->fRandom->nextULessThan(kMaxWidth); |
204 uint32_t height = d->fRandom->nextULessThan(kMaxHeight); | 202 uint32_t height = d->fRandom->nextULessThan(kMaxHeight); |
205 uint32_t x = d->fRandom->nextULessThan(kMaxWidth - width); | 203 uint32_t x = d->fRandom->nextULessThan(kMaxWidth - width); |
206 uint32_t y = d->fRandom->nextULessThan(kMaxHeight - height); | 204 uint32_t y = d->fRandom->nextULessThan(kMaxHeight - height); |
207 uint32_t inset = d->fRandom->nextULessThan(kMaxInset); | 205 uint32_t inset = d->fRandom->nextULessThan(kMaxInset); |
208 | 206 |
209 GrFragmentProcessor* effect = GrMagnifierEffect::Create( | 207 GrFragmentProcessor* effect = GrMagnifierEffect::Create( |
210 d->fProcDataManager, | |
211 texture, | 208 texture, |
212 SkRect::MakeWH(SkIntToScalar(kMaxWidth), SkIntToScalar(kMaxHeight)), | 209 SkRect::MakeWH(SkIntToScalar(kMaxWidth), SkIntToScalar(kMaxHeight)), |
213 (float) width / texture->width(), | 210 (float) width / texture->width(), |
214 (float) height / texture->height(), | 211 (float) height / texture->height(), |
215 texture->width() / (float) x, | 212 texture->width() / (float) x, |
216 texture->height() / (float) y, | 213 texture->height() / (float) y, |
217 (float) inset / texture->width(), | 214 (float) inset / texture->width(), |
218 (float) inset / texture->height()); | 215 (float) inset / texture->height()); |
219 SkASSERT(effect); | 216 SkASSERT(effect); |
220 return effect; | 217 return effect; |
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256 | 253 |
257 | 254 |
258 SkMagnifierImageFilter::SkMagnifierImageFilter(const SkRect& srcRect, SkScalar i
nset, | 255 SkMagnifierImageFilter::SkMagnifierImageFilter(const SkRect& srcRect, SkScalar i
nset, |
259 SkImageFilter* input) | 256 SkImageFilter* input) |
260 : INHERITED(1, &input), fSrcRect(srcRect), fInset(inset) { | 257 : INHERITED(1, &input), fSrcRect(srcRect), fInset(inset) { |
261 SkASSERT(srcRect.x() >= 0 && srcRect.y() >= 0 && inset >= 0); | 258 SkASSERT(srcRect.x() >= 0 && srcRect.y() >= 0 && inset >= 0); |
262 } | 259 } |
263 | 260 |
264 #if SK_SUPPORT_GPU | 261 #if SK_SUPPORT_GPU |
265 bool SkMagnifierImageFilter::asFragmentProcessor(GrFragmentProcessor** fp, | 262 bool SkMagnifierImageFilter::asFragmentProcessor(GrFragmentProcessor** fp, |
266 GrProcessorDataManager* procDat
aManager, | |
267 GrTexture* texture, const SkMat
rix&, | 263 GrTexture* texture, const SkMat
rix&, |
268 const SkIRect&bounds) const { | 264 const SkIRect&bounds) const { |
269 if (fp) { | 265 if (fp) { |
270 SkScalar yOffset = texture->origin() == kTopLeft_GrSurfaceOrigin ? fSrcR
ect.y() : | 266 SkScalar yOffset = texture->origin() == kTopLeft_GrSurfaceOrigin ? fSrcR
ect.y() : |
271 texture->height() - fSrcRect.height() * texture->height() / bounds.he
ight() | 267 texture->height() - fSrcRect.height() * texture->height() / bounds.he
ight() |
272 - fSrcRect.y(); | 268 - fSrcRect.y(); |
273 int boundsY = (texture->origin() == kTopLeft_GrSurfaceOrigin) ? bounds.y
() : | 269 int boundsY = (texture->origin() == kTopLeft_GrSurfaceOrigin) ? bounds.y
() : |
274 (texture->height() - bounds.height()); | 270 (texture->height() - bounds.height()); |
275 SkRect effectBounds = SkRect::MakeXYWH( | 271 SkRect effectBounds = SkRect::MakeXYWH( |
276 SkIntToScalar(bounds.x()) / texture->width(), | 272 SkIntToScalar(bounds.x()) / texture->width(), |
277 SkIntToScalar(boundsY) / texture->height(), | 273 SkIntToScalar(boundsY) / texture->height(), |
278 SkIntToScalar(texture->width()) / bounds.width(), | 274 SkIntToScalar(texture->width()) / bounds.width(), |
279 SkIntToScalar(texture->height()) / bounds.height()); | 275 SkIntToScalar(texture->height()) / bounds.height()); |
280 SkScalar invInset = fInset > 0 ? SkScalarInvert(fInset) : SK_Scalar1; | 276 SkScalar invInset = fInset > 0 ? SkScalarInvert(fInset) : SK_Scalar1; |
281 *fp = GrMagnifierEffect::Create(procDataManager, | 277 *fp = GrMagnifierEffect::Create(texture, |
282 texture, | |
283 effectBounds, | 278 effectBounds, |
284 fSrcRect.x() / texture->width(), | 279 fSrcRect.x() / texture->width(), |
285 yOffset / texture->height(), | 280 yOffset / texture->height(), |
286 fSrcRect.width() / bounds.width(), | 281 fSrcRect.width() / bounds.width(), |
287 fSrcRect.height() / bounds.height(), | 282 fSrcRect.height() / bounds.height(), |
288 bounds.width() * invInset, | 283 bounds.width() * invInset, |
289 bounds.height() * invInset); | 284 bounds.height() * invInset); |
290 } | 285 } |
291 return true; | 286 return true; |
292 } | 287 } |
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373 | 368 |
374 #ifndef SK_IGNORE_TO_STRING | 369 #ifndef SK_IGNORE_TO_STRING |
375 void SkMagnifierImageFilter::toString(SkString* str) const { | 370 void SkMagnifierImageFilter::toString(SkString* str) const { |
376 str->appendf("SkMagnifierImageFilter: ("); | 371 str->appendf("SkMagnifierImageFilter: ("); |
377 str->appendf("src: (%f,%f,%f,%f) ", | 372 str->appendf("src: (%f,%f,%f,%f) ", |
378 fSrcRect.fLeft, fSrcRect.fTop, fSrcRect.fRight, fSrcRect.fBotto
m); | 373 fSrcRect.fLeft, fSrcRect.fTop, fSrcRect.fRight, fSrcRect.fBotto
m); |
379 str->appendf("inset: %f", fInset); | 374 str->appendf("inset: %f", fInset); |
380 str->append(")"); | 375 str->append(")"); |
381 } | 376 } |
382 #endif | 377 #endif |
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