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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 | 8 |
| 9 #ifndef SkShader_DEFINED | 9 #ifndef SkShader_DEFINED |
| 10 #define SkShader_DEFINED | 10 #define SkShader_DEFINED |
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| 239 // by matrix. No extras | 239 // by matrix. No extras |
| 240 kRadial_BitmapType, //<! Access bitmap by transforming local coordinates | 240 kRadial_BitmapType, //<! Access bitmap by transforming local coordinates |
| 241 // by the matrix and taking the distance of result | 241 // by the matrix and taking the distance of result |
| 242 // from (0,0) as bitmap column. Bitmap is 1 pixel | 242 // from (0,0) as bitmap column. Bitmap is 1 pixel |
| 243 // tall. No extras | 243 // tall. No extras |
| 244 kSweep_BitmapType, //<! Access bitmap by transforming local coordinates | 244 kSweep_BitmapType, //<! Access bitmap by transforming local coordinates |
| 245 // by the matrix and taking the angle of result | 245 // by the matrix and taking the angle of result |
| 246 // to (0,0) as bitmap x coord, where angle = 0 is | 246 // to (0,0) as bitmap x coord, where angle = 0 is |
| 247 // bitmap left edge of bitmap = 2pi is the | 247 // bitmap left edge of bitmap = 2pi is the |
| 248 // right edge. Bitmap is 1 pixel tall. No extras | 248 // right edge. Bitmap is 1 pixel tall. No extras |
| 249 kTwoPointRadial_BitmapType, | |
| 250 //<! Matrix transforms to space where (0,0) is | |
| 251 // the center of the starting circle. The second | |
| 252 // circle will be centered (x, 0) where x may be | |
| 253 // 0. The post-matrix space is normalized such | |
| 254 // that 1 is the second radius - first radius. | |
| 255 // Three extra parameters are returned: | |
| 256 // 0: x-offset of second circle center | |
| 257 // to first. | |
| 258 // 1: radius of first circle in post-matrix | |
| 259 // space | |
| 260 // 2: the second radius minus the first radius | |
| 261 // in pre-transformed space. | |
| 262 kTwoPointConical_BitmapType, | 249 kTwoPointConical_BitmapType, |
| 263 //<! Matrix transforms to space where (0,0) is | 250 //<! Matrix transforms to space where (0,0) is |
| 264 // the center of the starting circle. The second | 251 // the center of the starting circle. The second |
| 265 // circle will be centered (x, 0) where x may be | 252 // circle will be centered (x, 0) where x may be |
| 266 // 0. | 253 // 0. |
| 267 // Three extra parameters are returned: | 254 // Three extra parameters are returned: |
| 268 // 0: x-offset of second circle center | 255 // 0: x-offset of second circle center |
| 269 // to first. | 256 // to first. |
| 270 // 1: radius of first circle | 257 // 1: radius of first circle |
| 271 // 2: the second radius minus the first radius | 258 // 2: the second radius minus the first radius |
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| 307 * The meaning of fPoint and fRadius is dependant on the type of gradient. | 294 * The meaning of fPoint and fRadius is dependant on the type of gradient. |
| 308 * | 295 * |
| 309 * None: | 296 * None: |
| 310 * info is ignored. | 297 * info is ignored. |
| 311 * Color: | 298 * Color: |
| 312 * fColorOffsets[0] is meaningless. | 299 * fColorOffsets[0] is meaningless. |
| 313 * Linear: | 300 * Linear: |
| 314 * fPoint[0] and fPoint[1] are the end-points of the gradient | 301 * fPoint[0] and fPoint[1] are the end-points of the gradient |
| 315 * Radial: | 302 * Radial: |
| 316 * fPoint[0] and fRadius[0] are the center and radius | 303 * fPoint[0] and fRadius[0] are the center and radius |
| 317 * Radial2: | 304 * Conical: |
| 318 * fPoint[0] and fRadius[0] are the center and radius of the 1st circle | 305 * fPoint[0] and fRadius[0] are the center and radius of the 1st circle |
| 319 * fPoint[1] and fRadius[1] are the center and radius of the 2nd circle | 306 * fPoint[1] and fRadius[1] are the center and radius of the 2nd circle |
| 320 * Sweep: | 307 * Sweep: |
| 321 * fPoint[0] is the center of the sweep. | 308 * fPoint[0] is the center of the sweep. |
| 322 */ | 309 */ |
| 323 | 310 |
| 324 enum GradientType { | 311 enum GradientType { |
| 325 kNone_GradientType, | 312 kNone_GradientType, |
| 326 kColor_GradientType, | 313 kColor_GradientType, |
| 327 kLinear_GradientType, | 314 kLinear_GradientType, |
| 328 kRadial_GradientType, | 315 kRadial_GradientType, |
| 329 kRadial2_GradientType, | |
| 330 kSweep_GradientType, | 316 kSweep_GradientType, |
| 331 kConical_GradientType, | 317 kConical_GradientType, |
| 332 kLast_GradientType = kConical_GradientType | 318 kLast_GradientType = kConical_GradientType |
| 333 }; | 319 }; |
| 334 | 320 |
| 335 struct GradientInfo { | 321 struct GradientInfo { |
| 336 int fColorCount; //!< In-out parameter, specifies passed size | 322 int fColorCount; //!< In-out parameter, specifies passed size |
| 337 // of fColors/fColorOffsets on input, and | 323 // of fColors/fColorOffsets on input, and |
| 338 // actual number of colors/offsets on | 324 // actual number of colors/offsets on |
| 339 // output. | 325 // output. |
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| 494 // constructors. | 480 // constructors. |
| 495 SkMatrix fLocalMatrix; | 481 SkMatrix fLocalMatrix; |
| 496 | 482 |
| 497 // So the SkLocalMatrixShader can whack fLocalMatrix in its SkReadBuffer con
structor. | 483 // So the SkLocalMatrixShader can whack fLocalMatrix in its SkReadBuffer con
structor. |
| 498 friend class SkLocalMatrixShader; | 484 friend class SkLocalMatrixShader; |
| 499 | 485 |
| 500 typedef SkFlattenable INHERITED; | 486 typedef SkFlattenable INHERITED; |
| 501 }; | 487 }; |
| 502 | 488 |
| 503 #endif | 489 #endif |
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