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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 "SkDropShadowImageFilter.h" | 8 #include "SkDropShadowImageFilter.h" |
9 | 9 |
10 #include "SkBitmap.h" | 10 #include "SkBitmap.h" |
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92 canvas.drawBitmap(src, offsetVec.fX, offsetVec.fY, &paint); | 92 canvas.drawBitmap(src, offsetVec.fX, offsetVec.fY, &paint); |
93 if (fShadowMode == kDrawShadowAndForeground_ShadowMode) { | 93 if (fShadowMode == kDrawShadowAndForeground_ShadowMode) { |
94 canvas.drawBitmap(src, 0, 0); | 94 canvas.drawBitmap(src, 0, 0); |
95 } | 95 } |
96 *result = device->accessBitmap(false); | 96 *result = device->accessBitmap(false); |
97 offset->fX = bounds.fLeft; | 97 offset->fX = bounds.fLeft; |
98 offset->fY = bounds.fTop; | 98 offset->fY = bounds.fTop; |
99 return true; | 99 return true; |
100 } | 100 } |
101 | 101 |
102 void SkDropShadowImageFilter::computeFastBounds(const SkRect& src, SkRect* dst)
const { | 102 SkRect SkDropShadowImageFilter::computeFastBounds(const SkRect& src) const { |
103 if (getInput(0)) { | 103 SkRect bounds = this->getInput(0) ? this->getInput(0)->computeFastBounds(src
) : src; |
104 getInput(0)->computeFastBounds(src, dst); | 104 SkRect shadowBounds = bounds; |
105 } else { | |
106 *dst = src; | |
107 } | |
108 | |
109 SkRect shadowBounds = *dst; | |
110 shadowBounds.offset(fDx, fDy); | 105 shadowBounds.offset(fDx, fDy); |
111 shadowBounds.outset(SkScalarMul(fSigmaX, SkIntToScalar(3)), | 106 shadowBounds.outset(SkScalarMul(fSigmaX, SkIntToScalar(3)), |
112 SkScalarMul(fSigmaY, SkIntToScalar(3))); | 107 SkScalarMul(fSigmaY, SkIntToScalar(3))); |
113 if (fShadowMode == kDrawShadowAndForeground_ShadowMode) { | 108 if (fShadowMode == kDrawShadowAndForeground_ShadowMode) { |
114 dst->join(shadowBounds); | 109 bounds.join(shadowBounds); |
115 } else { | 110 } else { |
116 *dst = shadowBounds; | 111 bounds = shadowBounds; |
117 } | 112 } |
| 113 return bounds; |
118 } | 114 } |
119 | 115 |
120 void SkDropShadowImageFilter::onFilterNodeBounds(const SkIRect& src, const SkMat
rix& ctm, | 116 SkIRect SkDropShadowImageFilter::onFilterNodeBounds(const SkIRect& src, const Sk
Matrix& ctm, |
121 SkIRect* dst, MapDirection dire
ction) const { | 117 MapDirection direction) cons
t { |
122 *dst = src; | |
123 SkVector offsetVec = SkVector::Make(fDx, fDy); | 118 SkVector offsetVec = SkVector::Make(fDx, fDy); |
124 if (kReverse_MapDirection == direction) { | 119 if (kReverse_MapDirection == direction) { |
125 offsetVec.negate(); | 120 offsetVec.negate(); |
126 } | 121 } |
127 ctm.mapVectors(&offsetVec, 1); | 122 ctm.mapVectors(&offsetVec, 1); |
128 dst->offset(SkScalarCeilToInt(offsetVec.x()), | 123 SkIRect dst = src.makeOffset(SkScalarCeilToInt(offsetVec.x()), |
129 SkScalarCeilToInt(offsetVec.y())); | 124 SkScalarCeilToInt(offsetVec.y())); |
130 SkVector sigma = SkVector::Make(fSigmaX, fSigmaY); | 125 SkVector sigma = SkVector::Make(fSigmaX, fSigmaY); |
131 ctm.mapVectors(&sigma, 1); | 126 ctm.mapVectors(&sigma, 1); |
132 dst->outset(SkScalarCeilToInt(SkScalarMul(sigma.x(), SkIntToScalar(3))), | 127 dst.outset(SkScalarCeilToInt(SkScalarMul(sigma.x(), SkIntToScalar(3))), |
133 SkScalarCeilToInt(SkScalarMul(sigma.y(), SkIntToScalar(3)))); | 128 SkScalarCeilToInt(SkScalarMul(sigma.y(), SkIntToScalar(3)))); |
134 if (fShadowMode == kDrawShadowAndForeground_ShadowMode) { | 129 if (fShadowMode == kDrawShadowAndForeground_ShadowMode) { |
135 dst->join(src); | 130 dst.join(src); |
136 } | 131 } |
| 132 return dst; |
137 } | 133 } |
138 | 134 |
139 #ifndef SK_IGNORE_TO_STRING | 135 #ifndef SK_IGNORE_TO_STRING |
140 void SkDropShadowImageFilter::toString(SkString* str) const { | 136 void SkDropShadowImageFilter::toString(SkString* str) const { |
141 str->appendf("SkDropShadowImageFilter: ("); | 137 str->appendf("SkDropShadowImageFilter: ("); |
142 | 138 |
143 str->appendf("dX: %f ", fDx); | 139 str->appendf("dX: %f ", fDx); |
144 str->appendf("dY: %f ", fDy); | 140 str->appendf("dY: %f ", fDy); |
145 str->appendf("sigmaX: %f ", fSigmaX); | 141 str->appendf("sigmaX: %f ", fSigmaX); |
146 str->appendf("sigmaY: %f ", fSigmaY); | 142 str->appendf("sigmaY: %f ", fSigmaY); |
147 | 143 |
148 str->append("Color: "); | 144 str->append("Color: "); |
149 str->appendHex(fColor); | 145 str->appendHex(fColor); |
150 | 146 |
151 static const char* gModeStrings[] = { | 147 static const char* gModeStrings[] = { |
152 "kDrawShadowAndForeground", "kDrawShadowOnly" | 148 "kDrawShadowAndForeground", "kDrawShadowOnly" |
153 }; | 149 }; |
154 | 150 |
155 static_assert(kShadowModeCount == SK_ARRAY_COUNT(gModeStrings), "enum_mismat
ch"); | 151 static_assert(kShadowModeCount == SK_ARRAY_COUNT(gModeStrings), "enum_mismat
ch"); |
156 | 152 |
157 str->appendf(" mode: %s", gModeStrings[fShadowMode]); | 153 str->appendf(" mode: %s", gModeStrings[fShadowMode]); |
158 | 154 |
159 str->append(")"); | 155 str->append(")"); |
160 } | 156 } |
161 #endif | 157 #endif |
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