SkDrawCommand.h revision ade9a3485e78d471f5f0902e9e50a2ec74c88e76
1 2/* 3 * Copyright 2012 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9#ifndef SKDRAWCOMMAND_H_ 10#define SKDRAWCOMMAND_H_ 11 12#include "SkPictureFlat.h" 13#include "SkCanvas.h" 14#include "SkString.h" 15 16class SK_API SkDrawCommand { 17public: 18 /* TODO(chudy): Remove subclasses. */ 19 SkDrawCommand(DrawType drawType); 20 SkDrawCommand(); 21 22 virtual ~SkDrawCommand(); 23 24 virtual SkString toString(); 25 26 virtual const char* toCString() { 27 return GetCommandString(fDrawType); 28 } 29 30 bool isVisible() const { 31 return fVisible; 32 } 33 34 void setVisible(bool toggle) { 35 fVisible = toggle; 36 } 37 38 SkTDArray<SkString*>* Info() {return &fInfo; }; 39 virtual void execute(SkCanvas* canvas) = 0; 40 virtual void vizExecute(SkCanvas* canvas) { }; 41 /** Does nothing by default, but used by save() and restore()-type 42 subclasses to track unresolved save() calls. */ 43 virtual void trackSaveState(int* state) { }; 44 45 // The next "active" system is only used by save, saveLayer, restore, 46 // pushCull and popCull. It is used in two ways: 47 // To determine which saveLayers are currently active (at a 48 // given point in the rendering). 49 // save just return a kPushLayer action but don't track active state 50 // restore just return a kPopLayer action 51 // saveLayers return kPushLayer but also track the active state 52 // To determine which culls are currently active (at a given point) 53 // in the rendering). 54 // pushCull returns a kPushCull action 55 // popCull returns a kPopCull action 56 enum Action { 57 kNone_Action, 58 kPopLayer_Action, 59 kPushLayer_Action, 60 kPopCull_Action, 61 kPushCull_Action 62 }; 63 virtual Action action() const { return kNone_Action; } 64 virtual void setActive(bool active) {} 65 virtual bool active() const { return false; } 66 67 DrawType getType() { return fDrawType; }; 68 69 virtual bool render(SkCanvas* canvas) const { return false; } 70 71 static const char* GetCommandString(DrawType type); 72 73protected: 74 DrawType fDrawType; 75 SkTDArray<SkString*> fInfo; 76 77private: 78 bool fVisible; 79}; 80 81class SkRestoreCommand : public SkDrawCommand { 82public: 83 SkRestoreCommand(); 84 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 85 virtual void trackSaveState(int* state) SK_OVERRIDE; 86 virtual Action action() const SK_OVERRIDE { return kPopLayer_Action; } 87 88private: 89 typedef SkDrawCommand INHERITED; 90}; 91 92class SkClearCommand : public SkDrawCommand { 93public: 94 SkClearCommand(SkColor color); 95 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 96private: 97 SkColor fColor; 98 99 typedef SkDrawCommand INHERITED; 100}; 101 102class SkClipPathCommand : public SkDrawCommand { 103public: 104 SkClipPathCommand(const SkPath& path, SkRegion::Op op, bool doAA); 105 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 106 virtual bool render(SkCanvas* canvas) const SK_OVERRIDE; 107private: 108 SkPath fPath; 109 SkRegion::Op fOp; 110 bool fDoAA; 111 112 typedef SkDrawCommand INHERITED; 113}; 114 115class SkClipRegionCommand : public SkDrawCommand { 116public: 117 SkClipRegionCommand(const SkRegion& region, SkRegion::Op op); 118 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 119private: 120 SkRegion fRegion; 121 SkRegion::Op fOp; 122 123 typedef SkDrawCommand INHERITED; 124}; 125 126class SkClipRectCommand : public SkDrawCommand { 127public: 128 SkClipRectCommand(const SkRect& rect, SkRegion::Op op, bool doAA); 129 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 130 131 const SkRect& rect() const { return fRect; } 132 SkRegion::Op op() const { return fOp; } 133 bool doAA() const { return fDoAA; } 134 135private: 136 SkRect fRect; 137 SkRegion::Op fOp; 138 bool fDoAA; 139 140 typedef SkDrawCommand INHERITED; 141}; 142 143class SkClipRRectCommand : public SkDrawCommand { 144public: 145 SkClipRRectCommand(const SkRRect& rrect, SkRegion::Op op, bool doAA); 146 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 147 virtual bool render(SkCanvas* canvas) const SK_OVERRIDE; 148 149 const SkRRect& rrect() const { return fRRect; } 150 SkRegion::Op op() const { return fOp; } 151 bool doAA() const { return fDoAA; } 152 153private: 154 SkRRect fRRect; 155 SkRegion::Op fOp; 156 bool fDoAA; 157 158 typedef SkDrawCommand INHERITED; 159}; 160 161class SkConcatCommand : public SkDrawCommand { 162public: 163 SkConcatCommand(const SkMatrix& matrix); 164 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 165private: 166 SkMatrix fMatrix; 167 168 typedef SkDrawCommand INHERITED; 169}; 170 171class SkDrawBitmapCommand : public SkDrawCommand { 172public: 173 SkDrawBitmapCommand(const SkBitmap& bitmap, SkScalar left, SkScalar top, 174 const SkPaint* paint); 175 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 176 virtual bool render(SkCanvas* canvas) const SK_OVERRIDE; 177private: 178 SkBitmap fBitmap; 179 SkScalar fLeft; 180 SkScalar fTop; 181 SkPaint fPaint; 182 SkPaint* fPaintPtr; 183 184 typedef SkDrawCommand INHERITED; 185}; 186 187class SkDrawBitmapMatrixCommand : public SkDrawCommand { 188public: 189 SkDrawBitmapMatrixCommand(const SkBitmap& bitmap, const SkMatrix& matrix, 190 const SkPaint* paint); 191 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 192 virtual bool render(SkCanvas* canvas) const SK_OVERRIDE; 193private: 194 SkBitmap fBitmap; 195 SkMatrix fMatrix; 196 SkPaint fPaint; 197 SkPaint* fPaintPtr; 198 199 typedef SkDrawCommand INHERITED; 200}; 201 202class SkDrawBitmapNineCommand : public SkDrawCommand { 203public: 204 SkDrawBitmapNineCommand(const SkBitmap& bitmap, const SkIRect& center, 205 const SkRect& dst, const SkPaint* paint); 206 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 207 virtual bool render(SkCanvas* canvas) const SK_OVERRIDE; 208private: 209 SkBitmap fBitmap; 210 SkIRect fCenter; 211 SkRect fDst; 212 SkPaint fPaint; 213 SkPaint* fPaintPtr; 214 215 typedef SkDrawCommand INHERITED; 216}; 217 218class SkDrawBitmapRectCommand : public SkDrawCommand { 219public: 220 SkDrawBitmapRectCommand(const SkBitmap& bitmap, const SkRect* src, 221 const SkRect& dst, const SkPaint* paint, 222 SkCanvas::DrawBitmapRectFlags flags); 223 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 224 virtual bool render(SkCanvas* canvas) const SK_OVERRIDE; 225 226 const SkBitmap& bitmap() const { return fBitmap; } 227 228 // The non-const 'paint' method allows modification of this object's 229 // SkPaint. For this reason the ctor and setPaint method make a local copy. 230 // The 'fPaintPtr' member acts a signal that the local SkPaint is valid 231 // (since only an SkPaint* is passed into the ctor). 232 const SkPaint* paint() const { return fPaintPtr; } 233 SkPaint* paint() { return fPaintPtr; } 234 235 void setPaint(const SkPaint& paint) { fPaint = paint; fPaintPtr = &fPaint; } 236 237 const SkRect* srcRect() const { return fSrc.isEmpty() ? NULL : &fSrc; } 238 void setSrcRect(const SkRect& src) { fSrc = src; } 239 240 const SkRect& dstRect() const { return fDst; } 241 void setDstRect(const SkRect& dst) { fDst = dst; } 242 243 SkCanvas::DrawBitmapRectFlags flags() const { return fFlags; } 244 void setFlags(SkCanvas::DrawBitmapRectFlags flags) { fFlags = flags; } 245 246private: 247 SkBitmap fBitmap; 248 SkRect fSrc; 249 SkRect fDst; 250 SkPaint fPaint; 251 SkPaint* fPaintPtr; 252 SkCanvas::DrawBitmapRectFlags fFlags; 253 254 typedef SkDrawCommand INHERITED; 255}; 256 257class SkDrawDataCommand : public SkDrawCommand { 258public: 259 SkDrawDataCommand(const void* data, size_t length); 260 virtual ~SkDrawDataCommand() { delete [] fData; } 261 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 262private: 263 char* fData; 264 size_t fLength; 265 266 typedef SkDrawCommand INHERITED; 267}; 268 269class SkBeginCommentGroupCommand : public SkDrawCommand { 270public: 271 SkBeginCommentGroupCommand(const char* description); 272 virtual void execute(SkCanvas* canvas) SK_OVERRIDE { 273 canvas->beginCommentGroup(fDescription.c_str()); 274 }; 275private: 276 SkString fDescription; 277 278 typedef SkDrawCommand INHERITED; 279}; 280 281class SkCommentCommand : public SkDrawCommand { 282public: 283 SkCommentCommand(const char* kywd, const char* value); 284 virtual void execute(SkCanvas* canvas) SK_OVERRIDE { 285 canvas->addComment(fKywd.c_str(), fValue.c_str()); 286 }; 287private: 288 SkString fKywd; 289 SkString fValue; 290 291 typedef SkDrawCommand INHERITED; 292}; 293 294class SkEndCommentGroupCommand : public SkDrawCommand { 295public: 296 SkEndCommentGroupCommand(); 297 virtual void execute(SkCanvas* canvas) SK_OVERRIDE { 298 canvas->endCommentGroup(); 299 }; 300private: 301 typedef SkDrawCommand INHERITED; 302}; 303 304class SkDrawOvalCommand : public SkDrawCommand { 305public: 306 SkDrawOvalCommand(const SkRect& oval, const SkPaint& paint); 307 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 308 virtual bool render(SkCanvas* canvas) const SK_OVERRIDE; 309private: 310 SkRect fOval; 311 SkPaint fPaint; 312 313 typedef SkDrawCommand INHERITED; 314}; 315 316class SkDrawPaintCommand : public SkDrawCommand { 317public: 318 SkDrawPaintCommand(const SkPaint& paint); 319 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 320 virtual bool render(SkCanvas* canvas) const SK_OVERRIDE; 321private: 322 SkPaint fPaint; 323 324 typedef SkDrawCommand INHERITED; 325}; 326 327class SkDrawPathCommand : public SkDrawCommand { 328public: 329 SkDrawPathCommand(const SkPath& path, const SkPaint& paint); 330 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 331 virtual bool render(SkCanvas* canvas) const SK_OVERRIDE; 332 333private: 334 SkPath fPath; 335 SkPaint fPaint; 336 337 typedef SkDrawCommand INHERITED; 338}; 339 340class SkDrawPictureCommand : public SkDrawCommand { 341public: 342 SkDrawPictureCommand(SkPicture& picture); 343 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 344 virtual bool render(SkCanvas* canvas) const SK_OVERRIDE; 345 346private: 347 SkPicture fPicture; 348 349 typedef SkDrawCommand INHERITED; 350}; 351 352class SkDrawPointsCommand : public SkDrawCommand { 353public: 354 SkDrawPointsCommand(SkCanvas::PointMode mode, size_t count, const SkPoint pts[], 355 const SkPaint& paint); 356 virtual ~SkDrawPointsCommand() { delete [] fPts; } 357 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 358 virtual bool render(SkCanvas* canvas) const SK_OVERRIDE; 359private: 360 SkCanvas::PointMode fMode; 361 size_t fCount; 362 SkPoint* fPts; 363 SkPaint fPaint; 364 365 typedef SkDrawCommand INHERITED; 366}; 367 368class SkDrawTextCommand : public SkDrawCommand { 369public: 370 SkDrawTextCommand(const void* text, size_t byteLength, SkScalar x, SkScalar y, 371 const SkPaint& paint); 372 virtual ~SkDrawTextCommand() { delete [] fText; } 373 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 374private: 375 char* fText; 376 size_t fByteLength; 377 SkScalar fX; 378 SkScalar fY; 379 SkPaint fPaint; 380 381 typedef SkDrawCommand INHERITED; 382}; 383 384class SkDrawPosTextCommand : public SkDrawCommand { 385public: 386 SkDrawPosTextCommand(const void* text, size_t byteLength, const SkPoint pos[], 387 const SkPaint& paint); 388 virtual ~SkDrawPosTextCommand() { delete [] fPos; delete [] fText; } 389 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 390private: 391 char* fText; 392 size_t fByteLength; 393 SkPoint* fPos; 394 SkPaint fPaint; 395 396 typedef SkDrawCommand INHERITED; 397}; 398 399class SkDrawTextOnPathCommand : public SkDrawCommand { 400public: 401 SkDrawTextOnPathCommand(const void* text, size_t byteLength, const SkPath& path, 402 const SkMatrix* matrix, const SkPaint& paint); 403 virtual ~SkDrawTextOnPathCommand() { delete [] fText; } 404 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 405private: 406 char* fText; 407 size_t fByteLength; 408 SkPath fPath; 409 SkMatrix fMatrix; 410 SkPaint fPaint; 411 412 typedef SkDrawCommand INHERITED; 413}; 414 415class SkDrawPosTextHCommand : public SkDrawCommand { 416public: 417 SkDrawPosTextHCommand(const void* text, size_t byteLength, const SkScalar xpos[], 418 SkScalar constY, const SkPaint& paint); 419 virtual ~SkDrawPosTextHCommand() { delete [] fXpos; delete [] fText; } 420 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 421private: 422 SkScalar* fXpos; 423 char* fText; 424 size_t fByteLength; 425 SkScalar fConstY; 426 SkPaint fPaint; 427 428 typedef SkDrawCommand INHERITED; 429}; 430 431class SkDrawRectCommand : public SkDrawCommand { 432public: 433 SkDrawRectCommand(const SkRect& rect, const SkPaint& paint); 434 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 435 436 const SkRect& rect() const { return fRect; } 437 const SkPaint& paint() const { return fPaint; } 438private: 439 SkRect fRect; 440 SkPaint fPaint; 441 442 typedef SkDrawCommand INHERITED; 443}; 444 445class SkDrawRRectCommand : public SkDrawCommand { 446public: 447 SkDrawRRectCommand(const SkRRect& rrect, const SkPaint& paint); 448 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 449 virtual bool render(SkCanvas* canvas) const SK_OVERRIDE; 450private: 451 SkRRect fRRect; 452 SkPaint fPaint; 453 454 typedef SkDrawCommand INHERITED; 455}; 456 457class SkDrawDRRectCommand : public SkDrawCommand { 458public: 459 SkDrawDRRectCommand(const SkRRect& outer, const SkRRect& inner, 460 const SkPaint& paint); 461 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 462 virtual bool render(SkCanvas* canvas) const SK_OVERRIDE; 463private: 464 SkRRect fOuter; 465 SkRRect fInner; 466 SkPaint fPaint; 467 468 typedef SkDrawCommand INHERITED; 469}; 470 471class SkDrawSpriteCommand : public SkDrawCommand { 472public: 473 SkDrawSpriteCommand(const SkBitmap& bitmap, int left, int top, const SkPaint* paint); 474 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 475 virtual bool render(SkCanvas* canvas) const SK_OVERRIDE; 476private: 477 SkBitmap fBitmap; 478 int fLeft; 479 int fTop; 480 SkPaint fPaint; 481 SkPaint* fPaintPtr; 482 483 typedef SkDrawCommand INHERITED; 484}; 485 486class SkDrawVerticesCommand : public SkDrawCommand { 487public: 488 SkDrawVerticesCommand(SkCanvas::VertexMode vmode, int vertexCount, 489 const SkPoint vertices[], const SkPoint texs[], 490 const SkColor colors[], SkXfermode* xfermode, 491 const uint16_t indices[], int indexCount, 492 const SkPaint& paint); 493 virtual ~SkDrawVerticesCommand(); 494 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 495private: 496 SkCanvas::VertexMode fVmode; 497 int fVertexCount; 498 SkPoint* fVertices; 499 SkPoint* fTexs; 500 SkColor* fColors; 501 SkXfermode* fXfermode; 502 uint16_t* fIndices; 503 int fIndexCount; 504 SkPaint fPaint; 505 506 typedef SkDrawCommand INHERITED; 507}; 508 509class SkRotateCommand : public SkDrawCommand { 510public: 511 SkRotateCommand(SkScalar degrees); 512 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 513private: 514 SkScalar fDegrees; 515 516 typedef SkDrawCommand INHERITED; 517}; 518 519class SkSaveCommand : public SkDrawCommand { 520public: 521 SkSaveCommand(SkCanvas::SaveFlags flags); 522 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 523 virtual void trackSaveState(int* state) SK_OVERRIDE; 524 virtual Action action() const SK_OVERRIDE { return kPushLayer_Action; } 525private: 526 SkCanvas::SaveFlags fFlags; 527 528 typedef SkDrawCommand INHERITED; 529}; 530 531class SkSaveLayerCommand : public SkDrawCommand { 532public: 533 SkSaveLayerCommand(const SkRect* bounds, const SkPaint* paint, 534 SkCanvas::SaveFlags flags); 535 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 536 virtual void vizExecute(SkCanvas* canvas) SK_OVERRIDE; 537 virtual void trackSaveState(int* state) SK_OVERRIDE; 538 virtual Action action() const SK_OVERRIDE{ return kPushLayer_Action; } 539 virtual void setActive(bool active) SK_OVERRIDE { fActive = active; } 540 virtual bool active() const SK_OVERRIDE { return fActive; } 541 542 const SkPaint* paint() const { return fPaintPtr; } 543 544private: 545 SkRect fBounds; 546 SkPaint fPaint; 547 SkPaint* fPaintPtr; 548 SkCanvas::SaveFlags fFlags; 549 550 bool fActive; 551 552 typedef SkDrawCommand INHERITED; 553}; 554 555class SkScaleCommand : public SkDrawCommand { 556public: 557 SkScaleCommand(SkScalar sx, SkScalar sy); 558 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 559 560 SkScalar x() const { return fSx; } 561 SkScalar y() const { return fSy; } 562 563private: 564 SkScalar fSx; 565 SkScalar fSy; 566 567 typedef SkDrawCommand INHERITED; 568}; 569 570class SkSetMatrixCommand : public SkDrawCommand { 571public: 572 SkSetMatrixCommand(const SkMatrix& matrix); 573 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 574private: 575 SkMatrix fMatrix; 576 577 typedef SkDrawCommand INHERITED; 578}; 579 580class SkSkewCommand : public SkDrawCommand { 581public: 582 SkSkewCommand(SkScalar sx, SkScalar sy); 583 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 584private: 585 SkScalar fSx; 586 SkScalar fSy; 587 588 typedef SkDrawCommand INHERITED; 589}; 590 591class SkTranslateCommand : public SkDrawCommand { 592public: 593 SkTranslateCommand(SkScalar dx, SkScalar dy); 594 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 595 596 SkScalar x() const { return fDx; } 597 SkScalar y() const { return fDy; } 598 599private: 600 SkScalar fDx; 601 SkScalar fDy; 602 603 typedef SkDrawCommand INHERITED; 604}; 605 606class SkPushCullCommand : public SkDrawCommand { 607public: 608 SkPushCullCommand(const SkRect&); 609 virtual void execute(SkCanvas*) SK_OVERRIDE; 610 virtual void vizExecute(SkCanvas* canvas) SK_OVERRIDE; 611 virtual Action action() const { return kPushCull_Action; } 612 virtual void setActive(bool active) { fActive = active; } 613 virtual bool active() const { return fActive; } 614private: 615 SkRect fCullRect; 616 bool fActive; 617 618 typedef SkDrawCommand INHERITED; 619}; 620 621class SkPopCullCommand : public SkDrawCommand { 622public: 623 SkPopCullCommand(); 624 virtual void execute(SkCanvas* canvas) SK_OVERRIDE; 625 virtual Action action() const { return kPopCull_Action; } 626private: 627 typedef SkDrawCommand INHERITED; 628}; 629 630#endif 631