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1 /* | 1 /* |
2 * Copyright 2006 The Android Open Source Project | 2 * Copyright 2006 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 "SkGradientShaderPriv.h" | 8 #include "SkGradientShaderPriv.h" |
9 #include "SkLinearGradient.h" | 9 #include "SkLinearGradient.h" |
10 #include "SkRadialGradient.h" | 10 #include "SkRadialGradient.h" |
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192 SkASSERT(2 == fColorCount); | 192 SkASSERT(2 == fColorCount); |
193 fOrigPos[0] = SkScalarPin(desc.fPos[0], 0, 1); | 193 fOrigPos[0] = SkScalarPin(desc.fPos[0], 0, 1); |
194 fOrigPos[1] = SkScalarPin(desc.fPos[1], fOrigPos[0], 1); | 194 fOrigPos[1] = SkScalarPin(desc.fPos[1], fOrigPos[0], 1); |
195 if (0 == fOrigPos[0] && 1 == fOrigPos[1]) { | 195 if (0 == fOrigPos[0] && 1 == fOrigPos[1]) { |
196 fOrigPos = NULL; | 196 fOrigPos = NULL; |
197 } | 197 } |
198 } | 198 } |
199 this->initCommon(); | 199 this->initCommon(); |
200 } | 200 } |
201 | 201 |
| 202 #ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING |
| 203 static SkShader::TileMode unpack_mode(uint32_t packed) { |
| 204 return (SkShader::TileMode)(packed & 0xF); |
| 205 } |
| 206 |
| 207 static uint32_t unpack_flags(uint32_t packed) { |
| 208 return packed >> 4; |
| 209 } |
| 210 |
| 211 SkGradientShaderBase::SkGradientShaderBase(SkReadBuffer& buffer) : INHERITED(buf
fer) { |
| 212 int colorCount = fColorCount = buffer.getArrayCount(); |
| 213 if (colorCount > kColorStorageCount) { |
| 214 size_t allocSize = (sizeof(SkColor) + sizeof(SkScalar) + sizeof(Rec)) *
colorCount; |
| 215 if (buffer.validateAvailable(allocSize)) { |
| 216 fOrigColors = reinterpret_cast<SkColor*>(sk_malloc_throw(allocSize))
; |
| 217 } else { |
| 218 fOrigColors = NULL; |
| 219 colorCount = fColorCount = 0; |
| 220 } |
| 221 } else { |
| 222 fOrigColors = fStorage; |
| 223 } |
| 224 buffer.readColorArray(fOrigColors, colorCount); |
| 225 |
| 226 fOrigPos = (SkScalar*)(fOrigColors + colorCount); |
| 227 |
| 228 { |
| 229 uint32_t packed = buffer.readUInt(); |
| 230 fGradFlags = SkToU8(unpack_flags(packed)); |
| 231 fTileMode = unpack_mode(packed); |
| 232 } |
| 233 fTileProc = gTileProcs[fTileMode]; |
| 234 fRecs = (Rec*)(fOrigPos + colorCount); |
| 235 if (colorCount > 2) { |
| 236 Rec* recs = fRecs; |
| 237 recs[0].fPos = 0; |
| 238 fOrigPos[0] = 0; |
| 239 for (int i = 1; i < colorCount; i++) { |
| 240 recs[i].fPos = buffer.readInt(); |
| 241 recs[i].fScale = buffer.readUInt(); |
| 242 fOrigPos[i] = SkFixedToScalar(recs[i].fPos); |
| 243 } |
| 244 } else { |
| 245 fOrigPos = NULL; |
| 246 } |
| 247 buffer.readMatrix(&fPtsToUnit); |
| 248 this->initCommon(); |
| 249 } |
| 250 #endif |
| 251 |
202 SkGradientShaderBase::~SkGradientShaderBase() { | 252 SkGradientShaderBase::~SkGradientShaderBase() { |
203 if (fOrigColors != fStorage) { | 253 if (fOrigColors != fStorage) { |
204 sk_free(fOrigColors); | 254 sk_free(fOrigColors); |
205 } | 255 } |
206 } | 256 } |
207 | 257 |
208 void SkGradientShaderBase::initCommon() { | 258 void SkGradientShaderBase::initCommon() { |
209 unsigned colorAlpha = 0xFF; | 259 unsigned colorAlpha = 0xFF; |
210 for (int i = 0; i < fColorCount; i++) { | 260 for (int i = 0; i < fColorCount; i++) { |
211 colorAlpha &= SkColorGetA(fOrigColors[i]); | 261 colorAlpha &= SkColorGetA(fOrigColors[i]); |
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1176 (*stops)[i] = stop; | 1226 (*stops)[i] = stop; |
1177 stop = i < outColors - 1 ? stop + random->nextUScalar1() * (1.f - st
op) : 1.f; | 1227 stop = i < outColors - 1 ? stop + random->nextUScalar1() * (1.f - st
op) : 1.f; |
1178 } | 1228 } |
1179 } | 1229 } |
1180 *tm = static_cast<SkShader::TileMode>(random->nextULessThan(SkShader::kTileM
odeCount)); | 1230 *tm = static_cast<SkShader::TileMode>(random->nextULessThan(SkShader::kTileM
odeCount)); |
1181 | 1231 |
1182 return outColors; | 1232 return outColors; |
1183 } | 1233 } |
1184 | 1234 |
1185 #endif | 1235 #endif |
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