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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 "SkOffsetImageFilter.h" | 8 #include "SkOffsetImageFilter.h" |
9 #include "SkBitmap.h" | 9 #include "SkBitmap.h" |
10 #include "SkCanvas.h" | 10 #include "SkCanvas.h" |
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77 } | 77 } |
78 | 78 |
79 bool SkOffsetImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm
, | 79 bool SkOffsetImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm
, |
80 SkIRect* dst) const { | 80 SkIRect* dst) const { |
81 SkVector vec; | 81 SkVector vec; |
82 ctm.mapVectors(&vec, &fOffset, 1); | 82 ctm.mapVectors(&vec, &fOffset, 1); |
83 | 83 |
84 SkIRect bounds = src; | 84 SkIRect bounds = src; |
85 bounds.offset(-SkScalarCeilToInt(vec.fX), -SkScalarCeilToInt(vec.fY)); | 85 bounds.offset(-SkScalarCeilToInt(vec.fX), -SkScalarCeilToInt(vec.fY)); |
86 bounds.join(src); | 86 bounds.join(src); |
| 87 if (getInput(0)) { |
| 88 return getInput(0)->filterBounds(bounds, ctm, dst); |
| 89 } |
87 *dst = bounds; | 90 *dst = bounds; |
88 return true; | 91 return true; |
89 } | 92 } |
90 | 93 |
91 void SkOffsetImageFilter::flatten(SkWriteBuffer& buffer) const { | 94 void SkOffsetImageFilter::flatten(SkWriteBuffer& buffer) const { |
92 this->INHERITED::flatten(buffer); | 95 this->INHERITED::flatten(buffer); |
93 buffer.writePoint(fOffset); | 96 buffer.writePoint(fOffset); |
94 } | 97 } |
95 | 98 |
96 SkOffsetImageFilter::SkOffsetImageFilter(SkScalar dx, SkScalar dy, SkImageFilter
* input, | 99 SkOffsetImageFilter::SkOffsetImageFilter(SkScalar dx, SkScalar dy, SkImageFilter
* input, |
97 const CropRect* cropRect) : INHERITED(i
nput, cropRect) { | 100 const CropRect* cropRect) : INHERITED(i
nput, cropRect) { |
98 fOffset.set(dx, dy); | 101 fOffset.set(dx, dy); |
99 } | 102 } |
100 | 103 |
101 SkOffsetImageFilter::SkOffsetImageFilter(SkReadBuffer& buffer) | 104 SkOffsetImageFilter::SkOffsetImageFilter(SkReadBuffer& buffer) |
102 : INHERITED(1, buffer) { | 105 : INHERITED(1, buffer) { |
103 buffer.readPoint(&fOffset); | 106 buffer.readPoint(&fOffset); |
104 buffer.validate(SkScalarIsFinite(fOffset.fX) && | 107 buffer.validate(SkScalarIsFinite(fOffset.fX) && |
105 SkScalarIsFinite(fOffset.fY)); | 108 SkScalarIsFinite(fOffset.fY)); |
106 } | 109 } |
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