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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 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 "SkAlphaThresholdFilter.h" | 8 #include "SkAlphaThresholdFilter.h" |
9 #include "SkBitmap.h" | 9 #include "SkBitmap.h" |
10 #include "SkDevice.h" | 10 #include "SkDevice.h" |
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38 SkRegion fRegion; | 38 SkRegion fRegion; |
39 SkScalar fInnerThreshold; | 39 SkScalar fInnerThreshold; |
40 SkScalar fOuterThreshold; | 40 SkScalar fOuterThreshold; |
41 typedef SkImageFilter INHERITED; | 41 typedef SkImageFilter INHERITED; |
42 }; | 42 }; |
43 | 43 |
44 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkAlphaThresholdFilter) | 44 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkAlphaThresholdFilter) |
45 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkAlphaThresholdFilterImpl) | 45 SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkAlphaThresholdFilterImpl) |
46 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END | 46 SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END |
47 | 47 |
48 static bool outside_unit(SkScalar x) { | |
49 return x < 0 || x > 1; | |
50 } | |
51 | 48 |
52 SkImageFilter* SkAlphaThresholdFilter::Create(const SkRegion& region, | 49 SkImageFilter* SkAlphaThresholdFilter::Create(const SkRegion& region, |
53 SkScalar innerThreshold, | 50 SkScalar innerThreshold, |
54 SkScalar outerThreshold, | 51 SkScalar outerThreshold, |
55 SkImageFilter* input) { | 52 SkImageFilter* input) { |
56 if (outside_unit(innerThreshold) || outside_unit(outerThreshold) || | |
57 innerThreshold > outerThreshold) | |
58 { | |
59 return nullptr; | |
60 } | |
61 return new SkAlphaThresholdFilterImpl(region, innerThreshold, outerThreshold
, input); | 53 return new SkAlphaThresholdFilterImpl(region, innerThreshold, outerThreshold
, input); |
62 } | 54 } |
63 | 55 |
64 #if SK_SUPPORT_GPU | 56 #if SK_SUPPORT_GPU |
65 #include "GrContext.h" | 57 #include "GrContext.h" |
66 #include "GrCoordTransform.h" | 58 #include "GrCoordTransform.h" |
67 #include "GrFragmentProcessor.h" | 59 #include "GrFragmentProcessor.h" |
68 #include "GrInvariantOutput.h" | 60 #include "GrInvariantOutput.h" |
69 #include "GrTextureAccess.h" | 61 #include "GrTextureAccess.h" |
70 #include "effects/GrPorterDuffXferProcessor.h" | 62 #include "effects/GrPorterDuffXferProcessor.h" |
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335 void SkAlphaThresholdFilterImpl::flatten(SkWriteBuffer& buffer) const { | 327 void SkAlphaThresholdFilterImpl::flatten(SkWriteBuffer& buffer) const { |
336 this->INHERITED::flatten(buffer); | 328 this->INHERITED::flatten(buffer); |
337 buffer.writeScalar(fInnerThreshold); | 329 buffer.writeScalar(fInnerThreshold); |
338 buffer.writeScalar(fOuterThreshold); | 330 buffer.writeScalar(fOuterThreshold); |
339 buffer.writeRegion(fRegion); | 331 buffer.writeRegion(fRegion); |
340 } | 332 } |
341 | 333 |
342 bool SkAlphaThresholdFilterImpl::onFilterImageDeprecated(Proxy* proxy, const SkB
itmap& src, | 334 bool SkAlphaThresholdFilterImpl::onFilterImageDeprecated(Proxy* proxy, const SkB
itmap& src, |
343 const Context& ctx, SkB
itmap* dst, | 335 const Context& ctx, SkB
itmap* dst, |
344 SkIPoint* offset) const
{ | 336 SkIPoint* offset) const
{ |
| 337 SkASSERT(src.colorType() == kN32_SkColorType); |
345 | 338 |
346 if (src.colorType() != kN32_SkColorType) { | 339 if (src.colorType() != kN32_SkColorType) { |
347 return false; | 340 return false; |
348 } | 341 } |
349 | 342 |
350 SkMatrix localInverse; | 343 SkMatrix localInverse; |
351 if (!ctx.ctm().invert(&localInverse)) { | 344 if (!ctx.ctm().invert(&localInverse)) { |
352 return false; | 345 return false; |
353 } | 346 } |
354 | 347 |
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404 } | 397 } |
405 | 398 |
406 #ifndef SK_IGNORE_TO_STRING | 399 #ifndef SK_IGNORE_TO_STRING |
407 void SkAlphaThresholdFilterImpl::toString(SkString* str) const { | 400 void SkAlphaThresholdFilterImpl::toString(SkString* str) const { |
408 str->appendf("SkAlphaThresholdImageFilter: ("); | 401 str->appendf("SkAlphaThresholdImageFilter: ("); |
409 str->appendf("inner: %f outer: %f", fInnerThreshold, fOuterThreshold); | 402 str->appendf("inner: %f outer: %f", fInnerThreshold, fOuterThreshold); |
410 str->append(")"); | 403 str->append(")"); |
411 } | 404 } |
412 #endif | 405 #endif |
413 | 406 |
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