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| 1 /* | 1 /* |
| 2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 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 "SkRRect.h" | 8 #include "SkRRect.h" |
| 9 #include "SkMatrix.h" | 9 #include "SkMatrix.h" |
| 10 | 10 |
| (...skipping 25 matching lines...) Expand all Loading... |
| 36 } | 36 } |
| 37 fType = kSimple_Type; | 37 fType = kSimple_Type; |
| 38 if (xRad >= SkScalarHalf(fRect.width()) && yRad >= SkScalarHalf(fRect.height
())) { | 38 if (xRad >= SkScalarHalf(fRect.width()) && yRad >= SkScalarHalf(fRect.height
())) { |
| 39 fType = kOval_Type; | 39 fType = kOval_Type; |
| 40 // TODO: assert that all the x&y radii are already W/2 & H/2 | 40 // TODO: assert that all the x&y radii are already W/2 & H/2 |
| 41 } | 41 } |
| 42 | 42 |
| 43 SkDEBUGCODE(this->validate();) | 43 SkDEBUGCODE(this->validate();) |
| 44 } | 44 } |
| 45 | 45 |
| 46 void SkRRect::setNinePatch(const SkRect& rect, SkScalar leftRad, SkScalar topRad
, | |
| 47 SkScalar rightRad, SkScalar bottomRad) { | |
| 48 if (rect.isEmpty()) { | |
| 49 this->setEmpty(); | |
| 50 return; | |
| 51 } | |
| 52 | |
| 53 leftRad = SkMaxScalar(leftRad, 0); | |
| 54 topRad = SkMaxScalar(topRad, 0); | |
| 55 rightRad = SkMaxScalar(rightRad, 0); | |
| 56 bottomRad = SkMaxScalar(bottomRad, 0); | |
| 57 | |
| 58 SkScalar scale = SK_Scalar1; | |
| 59 if (leftRad + rightRad > rect.width()) { | |
| 60 scale = SkScalarDiv(rect.width(), leftRad + rightRad); | |
| 61 } | |
| 62 if (topRad + bottomRad > rect.height()) { | |
| 63 scale = SkMinScalar(scale, SkScalarDiv(rect.width(), leftRad + rightRad)
); | |
| 64 } | |
| 65 | |
| 66 if (scale < SK_Scalar1) { | |
| 67 leftRad = SkScalarMul(leftRad, scale); | |
| 68 topRad = SkScalarMul(topRad, scale); | |
| 69 rightRad = SkScalarMul(rightRad, scale); | |
| 70 bottomRad = SkScalarMul(bottomRad, scale); | |
| 71 } | |
| 72 | |
| 73 if (leftRad == rightRad && topRad == bottomRad) { | |
| 74 if (leftRad >= SkScalarHalf(rect.width()) && topRad >= SkScalarHalf(rect
.height())) { | |
| 75 fType = kOval_Type; | |
| 76 } else if (0 == leftRad || 0 == topRad) { | |
| 77 // If the left and (by equality check above) right radii are zero th
en it is a rect. | |
| 78 // Same goes for top/bottom. | |
| 79 fType = kRect_Type; | |
| 80 leftRad = 0; | |
| 81 topRad = 0; | |
| 82 rightRad = 0; | |
| 83 bottomRad = 0; | |
| 84 } else { | |
| 85 fType = kSimple_Type; | |
| 86 } | |
| 87 } else { | |
| 88 fType = kNinePatch_Type; | |
| 89 } | |
| 90 | |
| 91 fRect = rect; | |
| 92 fRadii[kUpperLeft_Corner].set(leftRad, topRad); | |
| 93 fRadii[kUpperRight_Corner].set(rightRad, topRad); | |
| 94 fRadii[kLowerRight_Corner].set(rightRad, bottomRad); | |
| 95 fRadii[kLowerLeft_Corner].set(leftRad, bottomRad); | |
| 96 | |
| 97 SkDEBUGCODE(this->validate();) | |
| 98 } | |
| 99 | |
| 100 | |
| 101 void SkRRect::setRectRadii(const SkRect& rect, const SkVector radii[4]) { | 46 void SkRRect::setRectRadii(const SkRect& rect, const SkVector radii[4]) { |
| 102 if (rect.isEmpty()) { | 47 if (rect.isEmpty()) { |
| 103 this->setEmpty(); | 48 this->setEmpty(); |
| 104 return; | 49 return; |
| 105 } | 50 } |
| 106 | 51 |
| 107 fRect = rect; | 52 fRect = rect; |
| 108 memcpy(fRadii, radii, sizeof(fRadii)); | 53 memcpy(fRadii, radii, sizeof(fRadii)); |
| 109 | 54 |
| 110 bool allCornersSquare = true; | 55 bool allCornersSquare = true; |
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| 248 | 193 |
| 249 // At this point we know all four corners of 'rect' are inside the | 194 // At this point we know all four corners of 'rect' are inside the |
| 250 // bounds of of this RR. Check to make sure all the corners are inside | 195 // bounds of of this RR. Check to make sure all the corners are inside |
| 251 // all the curves | 196 // all the curves |
| 252 return this->checkCornerContainment(rect.fLeft, rect.fTop) && | 197 return this->checkCornerContainment(rect.fLeft, rect.fTop) && |
| 253 this->checkCornerContainment(rect.fRight, rect.fTop) && | 198 this->checkCornerContainment(rect.fRight, rect.fTop) && |
| 254 this->checkCornerContainment(rect.fRight, rect.fBottom) && | 199 this->checkCornerContainment(rect.fRight, rect.fBottom) && |
| 255 this->checkCornerContainment(rect.fLeft, rect.fBottom); | 200 this->checkCornerContainment(rect.fLeft, rect.fBottom); |
| 256 } | 201 } |
| 257 | 202 |
| 258 static bool radii_are_nine_patch(const SkVector radii[4]) { | |
| 259 return radii[SkRRect::kUpperLeft_Corner].fX == radii[SkRRect::kLowerLeft_Cor
ner].fX && | |
| 260 radii[SkRRect::kUpperLeft_Corner].fY == radii[SkRRect::kUpperRight_Co
rner].fY && | |
| 261 radii[SkRRect::kUpperRight_Corner].fX == radii[SkRRect::kLowerRight_C
orner].fX && | |
| 262 radii[SkRRect::kLowerLeft_Corner].fY == radii[SkRRect::kLowerRight_Co
rner].fY; | |
| 263 } | |
| 264 | |
| 265 // There is a simplified version of this method in setRectXY | 203 // There is a simplified version of this method in setRectXY |
| 266 void SkRRect::computeType() const { | 204 void SkRRect::computeType() const { |
| 267 SkDEBUGCODE(this->validate();) | 205 SkDEBUGCODE(this->validate();) |
| 268 | 206 |
| 269 if (fRect.isEmpty()) { | 207 if (fRect.isEmpty()) { |
| 270 fType = kEmpty_Type; | 208 fType = kEmpty_Type; |
| 271 return; | 209 return; |
| 272 } | 210 } |
| 273 | 211 |
| 274 bool allRadiiEqual = true; // are all x radii equal and all y radii? | 212 bool allRadiiEqual = true; // are all x radii equal and all y radii? |
| (...skipping 18 matching lines...) Expand all Loading... |
| 293 if (allRadiiEqual) { | 231 if (allRadiiEqual) { |
| 294 if (fRadii[0].fX >= SkScalarHalf(fRect.width()) && | 232 if (fRadii[0].fX >= SkScalarHalf(fRect.width()) && |
| 295 fRadii[0].fY >= SkScalarHalf(fRect.height())) { | 233 fRadii[0].fY >= SkScalarHalf(fRect.height())) { |
| 296 fType = kOval_Type; | 234 fType = kOval_Type; |
| 297 } else { | 235 } else { |
| 298 fType = kSimple_Type; | 236 fType = kSimple_Type; |
| 299 } | 237 } |
| 300 return; | 238 return; |
| 301 } | 239 } |
| 302 | 240 |
| 303 if (radii_are_nine_patch(fRadii)) { | 241 fType = kComplex_Type; |
| 304 fType = kNinePatch_Type; | |
| 305 } else { | |
| 306 fType = kComplex_Type; | |
| 307 } | |
| 308 } | 242 } |
| 309 | 243 |
| 310 static bool matrix_only_scale_and_translate(const SkMatrix& matrix) { | 244 static bool matrix_only_scale_and_translate(const SkMatrix& matrix) { |
| 311 const SkMatrix::TypeMask m = (SkMatrix::TypeMask) (SkMatrix::kAffine_Mask | 245 const SkMatrix::TypeMask m = (SkMatrix::TypeMask) (SkMatrix::kAffine_Mask |
| 312 | SkMatrix::kPerspective_Mask); | 246 | SkMatrix::kPerspective_Mask); |
| 313 return (matrix.getType() & m) == 0; | 247 return (matrix.getType() & m) == 0; |
| 314 } | 248 } |
| 315 | 249 |
| 316 bool SkRRect::transform(const SkMatrix& matrix, SkRRect* dst) const { | 250 bool SkRRect::transform(const SkMatrix& matrix, SkRRect* dst) const { |
| 317 if (NULL == dst) { | 251 if (NULL == dst) { |
| (...skipping 132 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 450 } | 384 } |
| 451 | 385 |
| 452 if (fRadii[i].fX != fRadii[i-1].fX || fRadii[i].fY != fRadii[i-1].fY) { | 386 if (fRadii[i].fX != fRadii[i-1].fX || fRadii[i].fY != fRadii[i-1].fY) { |
| 453 allRadiiSame = false; | 387 allRadiiSame = false; |
| 454 } | 388 } |
| 455 | 389 |
| 456 if (0 != fRadii[i].fX && 0 != fRadii[i].fY) { | 390 if (0 != fRadii[i].fX && 0 != fRadii[i].fY) { |
| 457 allCornersSquare = false; | 391 allCornersSquare = false; |
| 458 } | 392 } |
| 459 } | 393 } |
| 460 bool patchesOfNine = radii_are_nine_patch(fRadii); | |
| 461 | 394 |
| 462 switch (fType) { | 395 switch (fType) { |
| 463 case kEmpty_Type: | 396 case kEmpty_Type: |
| 464 SkASSERT(fRect.isEmpty()); | 397 SkASSERT(fRect.isEmpty()); |
| 465 SkASSERT(allRadiiZero && allRadiiSame && allCornersSquare); | 398 SkASSERT(allRadiiZero && allRadiiSame && allCornersSquare); |
| 466 | 399 |
| 467 SkASSERT(0 == fRect.fLeft && 0 == fRect.fTop && | 400 SkASSERT(0 == fRect.fLeft && 0 == fRect.fTop && |
| 468 0 == fRect.fRight && 0 == fRect.fBottom); | 401 0 == fRect.fRight && 0 == fRect.fBottom); |
| 469 break; | 402 break; |
| 470 case kRect_Type: | 403 case kRect_Type: |
| 471 SkASSERT(!fRect.isEmpty()); | 404 SkASSERT(!fRect.isEmpty()); |
| 472 SkASSERT(allRadiiZero && allRadiiSame && allCornersSquare); | 405 SkASSERT(allRadiiZero && allRadiiSame && allCornersSquare); |
| 473 break; | 406 break; |
| 474 case kOval_Type: | 407 case kOval_Type: |
| 475 SkASSERT(!fRect.isEmpty()); | 408 SkASSERT(!fRect.isEmpty()); |
| 476 SkASSERT(!allRadiiZero && allRadiiSame && !allCornersSquare); | 409 SkASSERT(!allRadiiZero && allRadiiSame && !allCornersSquare); |
| 477 | 410 |
| 478 for (int i = 0; i < 4; ++i) { | 411 for (int i = 0; i < 4; ++i) { |
| 479 SkASSERT(SkScalarNearlyEqual(fRadii[i].fX, SkScalarHalf(fRect.wi
dth()))); | 412 SkASSERT(SkScalarNearlyEqual(fRadii[i].fX, SkScalarHalf(fRect.wi
dth()))); |
| 480 SkASSERT(SkScalarNearlyEqual(fRadii[i].fY, SkScalarHalf(fRect.he
ight()))); | 413 SkASSERT(SkScalarNearlyEqual(fRadii[i].fY, SkScalarHalf(fRect.he
ight()))); |
| 481 } | 414 } |
| 482 break; | 415 break; |
| 483 case kSimple_Type: | 416 case kSimple_Type: |
| 484 SkASSERT(!fRect.isEmpty()); | 417 SkASSERT(!fRect.isEmpty()); |
| 485 SkASSERT(!allRadiiZero && allRadiiSame && !allCornersSquare); | 418 SkASSERT(!allRadiiZero && allRadiiSame && !allCornersSquare); |
| 486 break; | 419 break; |
| 487 case kNinePatch_Type: | |
| 488 SkASSERT(!fRect.isEmpty()); | |
| 489 SkASSERT(!allRadiiZero && !allRadiiSame && !allCornersSquare); | |
| 490 SkASSERT(patchesOfNine); | |
| 491 break; | |
| 492 case kComplex_Type: | 420 case kComplex_Type: |
| 493 SkASSERT(!fRect.isEmpty()); | 421 SkASSERT(!fRect.isEmpty()); |
| 494 SkASSERT(!allRadiiZero && !allRadiiSame && !allCornersSquare); | 422 SkASSERT(!allRadiiZero && !allRadiiSame && !allCornersSquare); |
| 495 SkASSERT(!patchesOfNine); | |
| 496 break; | 423 break; |
| 497 case kUnknown_Type: | 424 case kUnknown_Type: |
| 498 // no limits on this | 425 // no limits on this |
| 499 break; | 426 break; |
| 500 } | 427 } |
| 501 } | 428 } |
| 502 #endif // SK_DEBUG | 429 #endif // SK_DEBUG |
| 503 | 430 |
| 504 /////////////////////////////////////////////////////////////////////////////// | 431 /////////////////////////////////////////////////////////////////////////////// |
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