SkiaCanvas.cpp revision d7f13f84f8aefcad10ccb83aad794f1864623642
1/* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include "SkiaCanvas.h" 18 19#include "CanvasProperty.h" 20#include "NinePatchUtils.h" 21#include "VectorDrawable.h" 22#include "hwui/Bitmap.h" 23#include "hwui/MinikinUtils.h" 24#include "pipeline/skia/AnimatedDrawables.h" 25 26#include <SkDrawable.h> 27#include <SkDeque.h> 28#include <SkDrawFilter.h> 29#include <SkGraphics.h> 30#include <SkImage.h> 31#include <SkImagePriv.h> 32#include <SkRSXform.h> 33#include <SkShader.h> 34#include <SkTemplates.h> 35#include <SkTextBlob.h> 36 37#include <memory> 38 39namespace android { 40 41using uirenderer::PaintUtils; 42 43Canvas* Canvas::create_canvas(const SkBitmap& bitmap) { 44 return new SkiaCanvas(bitmap); 45} 46 47Canvas* Canvas::create_canvas(SkCanvas* skiaCanvas) { 48 return new SkiaCanvas(skiaCanvas); 49} 50 51SkiaCanvas::SkiaCanvas() {} 52 53SkiaCanvas::SkiaCanvas(SkCanvas* canvas) 54 : mCanvas(canvas) {} 55 56SkiaCanvas::SkiaCanvas(const SkBitmap& bitmap) { 57 mCanvasOwned = std::unique_ptr<SkCanvas>(new SkCanvas(bitmap)); 58 mCanvas = mCanvasOwned.get(); 59} 60 61SkiaCanvas::~SkiaCanvas() {} 62 63void SkiaCanvas::reset(SkCanvas* skiaCanvas) { 64 if (mCanvas != skiaCanvas) { 65 mCanvas = skiaCanvas; 66 mCanvasOwned.reset(); 67 } 68 mSaveStack.reset(nullptr); 69 mHighContrastText = false; 70} 71 72// ---------------------------------------------------------------------------- 73// Canvas state operations: Replace Bitmap 74// ---------------------------------------------------------------------------- 75 76class ClipCopier : public SkCanvas::ClipVisitor { 77public: 78 explicit ClipCopier(SkCanvas* dstCanvas) : m_dstCanvas(dstCanvas) {} 79 80 virtual void clipRect(const SkRect& rect, SkClipOp op, bool antialias) { 81 m_dstCanvas->clipRect(rect, op, antialias); 82 } 83 virtual void clipRRect(const SkRRect& rrect, SkClipOp op, bool antialias) { 84 m_dstCanvas->clipRRect(rrect, op, antialias); 85 } 86 virtual void clipPath(const SkPath& path, SkClipOp op, bool antialias) { 87 m_dstCanvas->clipPath(path, op, antialias); 88 } 89 90private: 91 SkCanvas* m_dstCanvas; 92}; 93 94void SkiaCanvas::setBitmap(const SkBitmap& bitmap) { 95 SkCanvas* newCanvas = new SkCanvas(bitmap); 96 97 if (!bitmap.isNull()) { 98 // Copy the canvas matrix & clip state. 99 newCanvas->setMatrix(mCanvas->getTotalMatrix()); 100 101 ClipCopier copier(newCanvas); 102 mCanvas->replayClips(&copier); 103 } 104 105 // deletes the previously owned canvas (if any) 106 mCanvasOwned = std::unique_ptr<SkCanvas>(newCanvas); 107 mCanvas = newCanvas; 108 109 // clean up the old save stack 110 mSaveStack.reset(nullptr); 111} 112 113// ---------------------------------------------------------------------------- 114// Canvas state operations 115// ---------------------------------------------------------------------------- 116 117bool SkiaCanvas::isOpaque() { 118 return mCanvas->imageInfo().isOpaque(); 119} 120 121int SkiaCanvas::width() { 122 return mCanvas->imageInfo().width(); 123} 124 125int SkiaCanvas::height() { 126 return mCanvas->imageInfo().height(); 127} 128 129// ---------------------------------------------------------------------------- 130// Canvas state operations: Save (layer) 131// ---------------------------------------------------------------------------- 132 133int SkiaCanvas::getSaveCount() const { 134 return mCanvas->getSaveCount(); 135} 136 137int SkiaCanvas::save(SaveFlags::Flags flags) { 138 int count = mCanvas->save(); 139 recordPartialSave(flags); 140 return count; 141} 142 143// The SkiaCanvas::restore operation layers on the capability to preserve 144// either (or both) the matrix and/or clip state after a SkCanvas::restore 145// operation. It does this by explicitly saving off the clip & matrix state 146// when requested and playing it back after the SkCanvas::restore. 147void SkiaCanvas::restore() { 148 const auto* rec = this->currentSaveRec(); 149 if (!rec) { 150 // Fast path - no record for this frame. 151 mCanvas->restore(); 152 return; 153 } 154 155 bool preserveMatrix = !(rec->saveFlags & SaveFlags::Matrix); 156 bool preserveClip = !(rec->saveFlags & SaveFlags::Clip); 157 158 SkMatrix savedMatrix; 159 if (preserveMatrix) { 160 savedMatrix = mCanvas->getTotalMatrix(); 161 } 162 163 const size_t clipIndex = rec->clipIndex; 164 165 mCanvas->restore(); 166 mSaveStack->pop_back(); 167 168 if (preserveMatrix) { 169 mCanvas->setMatrix(savedMatrix); 170 } 171 172 if (preserveClip) { 173 this->applyPersistentClips(clipIndex); 174 } 175} 176 177void SkiaCanvas::restoreToCount(int restoreCount) { 178 while (mCanvas->getSaveCount() > restoreCount) { 179 this->restore(); 180 } 181} 182 183static inline SkCanvas::SaveLayerFlags layerFlags(SaveFlags::Flags flags) { 184 SkCanvas::SaveLayerFlags layerFlags = 0; 185 186 // We intentionally ignore the SaveFlags::HasAlphaLayer and 187 // SkCanvas::kIsOpaque_SaveLayerFlag flags because HWUI ignores it 188 // and our Android client may use it incorrectly. 189 // In Skia, this flag is purely for performance optimization. 190 191 if (!(flags & SaveFlags::ClipToLayer)) { 192 layerFlags |= SkCanvas::kDontClipToLayer_Legacy_SaveLayerFlag; 193 } 194 195 return layerFlags; 196} 197 198int SkiaCanvas::saveLayer(float left, float top, float right, float bottom, 199 const SkPaint* paint, SaveFlags::Flags flags) { 200 const SkRect bounds = SkRect::MakeLTRB(left, top, right, bottom); 201 const SkCanvas::SaveLayerRec rec(&bounds, paint, layerFlags(flags)); 202 203 return mCanvas->saveLayer(rec); 204} 205 206int SkiaCanvas::saveLayerAlpha(float left, float top, float right, float bottom, 207 int alpha, SaveFlags::Flags flags) { 208 if (static_cast<unsigned>(alpha) < 0xFF) { 209 SkPaint alphaPaint; 210 alphaPaint.setAlpha(alpha); 211 return this->saveLayer(left, top, right, bottom, &alphaPaint, flags); 212 } 213 return this->saveLayer(left, top, right, bottom, nullptr, flags); 214} 215 216class SkiaCanvas::Clip { 217public: 218 Clip(const SkRect& rect, SkClipOp op, const SkMatrix& m) 219 : mType(Type::Rect), mOp(op), mMatrix(m), mRRect(SkRRect::MakeRect(rect)) {} 220 Clip(const SkRRect& rrect, SkClipOp op, const SkMatrix& m) 221 : mType(Type::RRect), mOp(op), mMatrix(m), mRRect(rrect) {} 222 Clip(const SkPath& path, SkClipOp op, const SkMatrix& m) 223 : mType(Type::Path), mOp(op), mMatrix(m), mPath(&path) {} 224 225 void apply(SkCanvas* canvas) const { 226 canvas->setMatrix(mMatrix); 227 switch (mType) { 228 case Type::Rect: 229 canvas->clipRect(mRRect.rect(), mOp); 230 break; 231 case Type::RRect: 232 canvas->clipRRect(mRRect, mOp); 233 break; 234 case Type::Path: 235 canvas->clipPath(*mPath.get(), mOp); 236 break; 237 } 238 } 239 240private: 241 enum class Type { 242 Rect, 243 RRect, 244 Path, 245 }; 246 247 Type mType; 248 SkClipOp mOp; 249 SkMatrix mMatrix; 250 251 // These are logically a union (tracked separately due to non-POD path). 252 SkTLazy<SkPath> mPath; 253 SkRRect mRRect; 254}; 255 256const SkiaCanvas::SaveRec* SkiaCanvas::currentSaveRec() const { 257 const SaveRec* rec = mSaveStack 258 ? static_cast<const SaveRec*>(mSaveStack->back()) 259 : nullptr; 260 int currentSaveCount = mCanvas->getSaveCount(); 261 SkASSERT(!rec || currentSaveCount >= rec->saveCount); 262 263 return (rec && rec->saveCount == currentSaveCount) ? rec : nullptr; 264} 265 266// ---------------------------------------------------------------------------- 267// functions to emulate legacy SaveFlags (i.e. independent matrix/clip flags) 268// ---------------------------------------------------------------------------- 269 270void SkiaCanvas::recordPartialSave(SaveFlags::Flags flags) { 271 // A partial save is a save operation which doesn't capture the full canvas state. 272 // (either SaveFlags::Matrix or SaveFlags::Clip is missing). 273 274 // Mask-out non canvas state bits. 275 flags &= SaveFlags::MatrixClip; 276 277 if (flags == SaveFlags::MatrixClip) { 278 // not a partial save. 279 return; 280 } 281 282 if (!mSaveStack) { 283 mSaveStack.reset(new SkDeque(sizeof(struct SaveRec), 8)); 284 } 285 286 SaveRec* rec = static_cast<SaveRec*>(mSaveStack->push_back()); 287 rec->saveCount = mCanvas->getSaveCount(); 288 rec->saveFlags = flags; 289 rec->clipIndex = mClipStack.size(); 290} 291 292template <typename T> 293void SkiaCanvas::recordClip(const T& clip, SkClipOp op) { 294 // Only need tracking when in a partial save frame which 295 // doesn't restore the clip. 296 const SaveRec* rec = this->currentSaveRec(); 297 if (rec && !(rec->saveFlags & SaveFlags::Clip)) { 298 mClipStack.emplace_back(clip, op, mCanvas->getTotalMatrix()); 299 } 300} 301 302// Applies and optionally removes all clips >= index. 303void SkiaCanvas::applyPersistentClips(size_t clipStartIndex) { 304 SkASSERT(clipStartIndex <= mClipStack.size()); 305 const auto begin = mClipStack.cbegin() + clipStartIndex; 306 const auto end = mClipStack.cend(); 307 308 // Clip application mutates the CTM. 309 const SkMatrix saveMatrix = mCanvas->getTotalMatrix(); 310 311 for (auto clip = begin; clip != end; ++clip) { 312 clip->apply(mCanvas); 313 } 314 315 mCanvas->setMatrix(saveMatrix); 316 317 // If the current/post-restore save rec is also persisting clips, we 318 // leave them on the stack to be reapplied part of the next restore(). 319 // Otherwise we're done and just pop them. 320 const auto* rec = this->currentSaveRec(); 321 if (!rec || (rec->saveFlags & SaveFlags::Clip)) { 322 mClipStack.erase(begin, end); 323 } 324} 325 326// ---------------------------------------------------------------------------- 327// Canvas state operations: Matrix 328// ---------------------------------------------------------------------------- 329 330void SkiaCanvas::getMatrix(SkMatrix* outMatrix) const { 331 *outMatrix = mCanvas->getTotalMatrix(); 332} 333 334void SkiaCanvas::setMatrix(const SkMatrix& matrix) { 335 mCanvas->setMatrix(matrix); 336} 337 338void SkiaCanvas::concat(const SkMatrix& matrix) { 339 mCanvas->concat(matrix); 340} 341 342void SkiaCanvas::rotate(float degrees) { 343 mCanvas->rotate(degrees); 344} 345 346void SkiaCanvas::scale(float sx, float sy) { 347 mCanvas->scale(sx, sy); 348} 349 350void SkiaCanvas::skew(float sx, float sy) { 351 mCanvas->skew(sx, sy); 352} 353 354void SkiaCanvas::translate(float dx, float dy) { 355 mCanvas->translate(dx, dy); 356} 357 358// ---------------------------------------------------------------------------- 359// Canvas state operations: Clips 360// ---------------------------------------------------------------------------- 361 362// This function is a mirror of SkCanvas::getClipBounds except that it does 363// not outset the edge of the clip to account for anti-aliasing. There is 364// a skia bug to investigate pushing this logic into back into skia. 365// (see https://code.google.com/p/skia/issues/detail?id=1303) 366bool SkiaCanvas::getClipBounds(SkRect* outRect) const { 367 SkIRect ibounds; 368 if (!mCanvas->getDeviceClipBounds(&ibounds)) { 369 return false; 370 } 371 372 SkMatrix inverse; 373 // if we can't invert the CTM, we can't return local clip bounds 374 if (!mCanvas->getTotalMatrix().invert(&inverse)) { 375 if (outRect) { 376 outRect->setEmpty(); 377 } 378 return false; 379 } 380 381 if (NULL != outRect) { 382 SkRect r = SkRect::Make(ibounds); 383 inverse.mapRect(outRect, r); 384 } 385 return true; 386} 387 388bool SkiaCanvas::quickRejectRect(float left, float top, float right, float bottom) const { 389 SkRect bounds = SkRect::MakeLTRB(left, top, right, bottom); 390 return mCanvas->quickReject(bounds); 391} 392 393bool SkiaCanvas::quickRejectPath(const SkPath& path) const { 394 return mCanvas->quickReject(path); 395} 396 397bool SkiaCanvas::clipRect(float left, float top, float right, float bottom, SkClipOp op) { 398 SkRect rect = SkRect::MakeLTRB(left, top, right, bottom); 399 this->recordClip(rect, op); 400 mCanvas->clipRect(rect, op); 401 return !mCanvas->isClipEmpty(); 402} 403 404bool SkiaCanvas::clipPath(const SkPath* path, SkClipOp op) { 405 SkRRect roundRect; 406 if (path->isRRect(&roundRect)) { 407 this->recordClip(roundRect, op); 408 mCanvas->clipRRect(roundRect, op); 409 } else { 410 this->recordClip(*path, op); 411 mCanvas->clipPath(*path, op); 412 } 413 return !mCanvas->isClipEmpty(); 414} 415 416// ---------------------------------------------------------------------------- 417// Canvas state operations: Filters 418// ---------------------------------------------------------------------------- 419 420SkDrawFilter* SkiaCanvas::getDrawFilter() { 421 return mCanvas->getDrawFilter(); 422} 423 424void SkiaCanvas::setDrawFilter(SkDrawFilter* drawFilter) { 425 mCanvas->setDrawFilter(drawFilter); 426} 427 428// ---------------------------------------------------------------------------- 429// Canvas draw operations 430// ---------------------------------------------------------------------------- 431 432void SkiaCanvas::drawColor(int color, SkBlendMode mode) { 433 mCanvas->drawColor(color, mode); 434} 435 436void SkiaCanvas::drawPaint(const SkPaint& paint) { 437 mCanvas->drawPaint(paint); 438} 439 440// ---------------------------------------------------------------------------- 441// Canvas draw operations: Geometry 442// ---------------------------------------------------------------------------- 443 444void SkiaCanvas::drawPoints(const float* points, int count, const SkPaint& paint, 445 SkCanvas::PointMode mode) { 446 if (CC_UNLIKELY(count < 2 || paint.nothingToDraw())) return; 447 // convert the floats into SkPoints 448 count >>= 1; // now it is the number of points 449 std::unique_ptr<SkPoint[]> pts(new SkPoint[count]); 450 for (int i = 0; i < count; i++) { 451 pts[i].set(points[0], points[1]); 452 points += 2; 453 } 454 mCanvas->drawPoints(mode, count, pts.get(), paint); 455} 456 457 458void SkiaCanvas::drawPoint(float x, float y, const SkPaint& paint) { 459 mCanvas->drawPoint(x, y, paint); 460} 461 462void SkiaCanvas::drawPoints(const float* points, int count, const SkPaint& paint) { 463 this->drawPoints(points, count, paint, SkCanvas::kPoints_PointMode); 464} 465 466void SkiaCanvas::drawLine(float startX, float startY, float stopX, float stopY, 467 const SkPaint& paint) { 468 mCanvas->drawLine(startX, startY, stopX, stopY, paint); 469} 470 471void SkiaCanvas::drawLines(const float* points, int count, const SkPaint& paint) { 472 if (CC_UNLIKELY(count < 4 || paint.nothingToDraw())) return; 473 this->drawPoints(points, count, paint, SkCanvas::kLines_PointMode); 474} 475 476void SkiaCanvas::drawRect(float left, float top, float right, float bottom, 477 const SkPaint& paint) { 478 if (CC_UNLIKELY(paint.nothingToDraw())) return; 479 mCanvas->drawRectCoords(left, top, right, bottom, paint); 480 481} 482 483void SkiaCanvas::drawRegion(const SkRegion& region, const SkPaint& paint) { 484 if (CC_UNLIKELY(paint.nothingToDraw())) return; 485 mCanvas->drawRegion(region, paint); 486} 487 488void SkiaCanvas::drawRoundRect(float left, float top, float right, float bottom, 489 float rx, float ry, const SkPaint& paint) { 490 if (CC_UNLIKELY(paint.nothingToDraw())) return; 491 SkRect rect = SkRect::MakeLTRB(left, top, right, bottom); 492 mCanvas->drawRoundRect(rect, rx, ry, paint); 493} 494 495void SkiaCanvas::drawCircle(float x, float y, float radius, const SkPaint& paint) { 496 if (CC_UNLIKELY(radius <= 0 || paint.nothingToDraw())) return; 497 mCanvas->drawCircle(x, y, radius, paint); 498} 499 500void SkiaCanvas::drawOval(float left, float top, float right, float bottom, const SkPaint& paint) { 501 if (CC_UNLIKELY(paint.nothingToDraw())) return; 502 SkRect oval = SkRect::MakeLTRB(left, top, right, bottom); 503 mCanvas->drawOval(oval, paint); 504} 505 506void SkiaCanvas::drawArc(float left, float top, float right, float bottom, 507 float startAngle, float sweepAngle, bool useCenter, const SkPaint& paint) { 508 if (CC_UNLIKELY(paint.nothingToDraw())) return; 509 SkRect arc = SkRect::MakeLTRB(left, top, right, bottom); 510 mCanvas->drawArc(arc, startAngle, sweepAngle, useCenter, paint); 511} 512 513void SkiaCanvas::drawPath(const SkPath& path, const SkPaint& paint) { 514 if (CC_UNLIKELY(paint.nothingToDraw())) return; 515 mCanvas->drawPath(path, paint); 516} 517 518void SkiaCanvas::drawVertices(SkCanvas::VertexMode vertexMode, int vertexCount, 519 const float* verts, const float* texs, const int* colors, 520 const uint16_t* indices, int indexCount, const SkPaint& paint) { 521#ifndef SK_SCALAR_IS_FLOAT 522 SkDEBUGFAIL("SkScalar must be a float for these conversions to be valid"); 523#endif 524 const int ptCount = vertexCount >> 1; 525 mCanvas->drawVertices(vertexMode, ptCount, (SkPoint*)verts, (SkPoint*)texs, 526 (SkColor*)colors, indices, indexCount, paint); 527} 528 529// ---------------------------------------------------------------------------- 530// Canvas draw operations: Bitmaps 531// ---------------------------------------------------------------------------- 532 533void SkiaCanvas::drawBitmap(Bitmap& bitmap, float left, float top, const SkPaint* paint) { 534 SkBitmap skBitmap; 535 bitmap.getSkBitmap(&skBitmap); 536 mCanvas->drawBitmap(skBitmap, left, top, paint); 537} 538 539void SkiaCanvas::drawBitmap(Bitmap& hwuiBitmap, const SkMatrix& matrix, const SkPaint* paint) { 540 SkBitmap bitmap; 541 hwuiBitmap.getSkBitmap(&bitmap); 542 SkAutoCanvasRestore acr(mCanvas, true); 543 mCanvas->concat(matrix); 544 mCanvas->drawBitmap(bitmap, 0, 0, paint); 545} 546 547void SkiaCanvas::drawBitmap(Bitmap& hwuiBitmap, float srcLeft, float srcTop, 548 float srcRight, float srcBottom, float dstLeft, float dstTop, 549 float dstRight, float dstBottom, const SkPaint* paint) { 550 SkBitmap bitmap; 551 hwuiBitmap.getSkBitmap(&bitmap); 552 SkRect srcRect = SkRect::MakeLTRB(srcLeft, srcTop, srcRight, srcBottom); 553 SkRect dstRect = SkRect::MakeLTRB(dstLeft, dstTop, dstRight, dstBottom); 554 mCanvas->drawBitmapRect(bitmap, srcRect, dstRect, paint); 555} 556 557void SkiaCanvas::drawBitmapMesh(Bitmap& hwuiBitmap, int meshWidth, int meshHeight, 558 const float* vertices, const int* colors, const SkPaint* paint) { 559 SkBitmap bitmap; 560 hwuiBitmap.getSkBitmap(&bitmap); 561 const int ptCount = (meshWidth + 1) * (meshHeight + 1); 562 const int indexCount = meshWidth * meshHeight * 6; 563 564 /* Our temp storage holds 2 or 3 arrays. 565 texture points [ptCount * sizeof(SkPoint)] 566 optionally vertex points [ptCount * sizeof(SkPoint)] if we need a 567 copy to convert from float to fixed 568 indices [ptCount * sizeof(uint16_t)] 569 */ 570 ssize_t storageSize = ptCount * sizeof(SkPoint); // texs[] 571 storageSize += indexCount * sizeof(uint16_t); // indices[] 572 573 574#ifndef SK_SCALAR_IS_FLOAT 575 SkDEBUGFAIL("SkScalar must be a float for these conversions to be valid"); 576#endif 577 std::unique_ptr<char[]> storage(new char[storageSize]); 578 SkPoint* texs = (SkPoint*)storage.get(); 579 uint16_t* indices = (uint16_t*)(texs + ptCount); 580 581 // cons up texture coordinates and indices 582 { 583 const SkScalar w = SkIntToScalar(bitmap.width()); 584 const SkScalar h = SkIntToScalar(bitmap.height()); 585 const SkScalar dx = w / meshWidth; 586 const SkScalar dy = h / meshHeight; 587 588 SkPoint* texsPtr = texs; 589 SkScalar y = 0; 590 for (int i = 0; i <= meshHeight; i++) { 591 if (i == meshHeight) { 592 y = h; // to ensure numerically we hit h exactly 593 } 594 SkScalar x = 0; 595 for (int j = 0; j < meshWidth; j++) { 596 texsPtr->set(x, y); 597 texsPtr += 1; 598 x += dx; 599 } 600 texsPtr->set(w, y); 601 texsPtr += 1; 602 y += dy; 603 } 604 SkASSERT(texsPtr - texs == ptCount); 605 } 606 607 // cons up indices 608 { 609 uint16_t* indexPtr = indices; 610 int index = 0; 611 for (int i = 0; i < meshHeight; i++) { 612 for (int j = 0; j < meshWidth; j++) { 613 // lower-left triangle 614 *indexPtr++ = index; 615 *indexPtr++ = index + meshWidth + 1; 616 *indexPtr++ = index + meshWidth + 2; 617 // upper-right triangle 618 *indexPtr++ = index; 619 *indexPtr++ = index + meshWidth + 2; 620 *indexPtr++ = index + 1; 621 // bump to the next cell 622 index += 1; 623 } 624 // bump to the next row 625 index += 1; 626 } 627 SkASSERT(indexPtr - indices == indexCount); 628 SkASSERT((char*)indexPtr - (char*)storage.get() == storageSize); 629 } 630 631 // double-check that we have legal indices 632#ifdef SK_DEBUG 633 { 634 for (int i = 0; i < indexCount; i++) { 635 SkASSERT((unsigned)indices[i] < (unsigned)ptCount); 636 } 637 } 638#endif 639 640 // cons-up a shader for the bitmap 641 SkPaint tmpPaint; 642 if (paint) { 643 tmpPaint = *paint; 644 } 645 646 sk_sp<SkImage> image = SkMakeImageFromRasterBitmap(bitmap, kNever_SkCopyPixelsMode); 647 tmpPaint.setShader(image->makeShader(SkShader::kClamp_TileMode, SkShader::kClamp_TileMode)); 648 649 mCanvas->drawVertices(SkCanvas::kTriangles_VertexMode, ptCount, (SkPoint*)vertices, 650 texs, (const SkColor*)colors, indices, 651 indexCount, tmpPaint); 652} 653 654void SkiaCanvas::drawNinePatch(Bitmap& hwuiBitmap, const Res_png_9patch& chunk, 655 float dstLeft, float dstTop, float dstRight, float dstBottom, const SkPaint* paint) { 656 657 SkBitmap bitmap; 658 hwuiBitmap.getSkBitmap(&bitmap); 659 660 SkCanvas::Lattice lattice; 661 NinePatchUtils::SetLatticeDivs(&lattice, chunk, bitmap.width(), bitmap.height()); 662 663 lattice.fFlags = nullptr; 664 int numFlags = 0; 665 if (chunk.numColors > 0 && chunk.numColors == NinePatchUtils::NumDistinctRects(lattice)) { 666 // We can expect the framework to give us a color for every distinct rect. 667 // Skia requires a flag for every rect. 668 numFlags = (lattice.fXCount + 1) * (lattice.fYCount + 1); 669 } 670 671 SkAutoSTMalloc<25, SkCanvas::Lattice::Flags> flags(numFlags); 672 if (numFlags > 0) { 673 NinePatchUtils::SetLatticeFlags(&lattice, flags.get(), numFlags, chunk); 674 } 675 676 lattice.fBounds = nullptr; 677 SkRect dst = SkRect::MakeLTRB(dstLeft, dstTop, dstRight, dstBottom); 678 mCanvas->drawBitmapLattice(bitmap, lattice, dst, paint); 679} 680 681void SkiaCanvas::drawVectorDrawable(VectorDrawableRoot* vectorDrawable) { 682 vectorDrawable->drawStaging(this); 683} 684 685// ---------------------------------------------------------------------------- 686// Canvas draw operations: Text 687// ---------------------------------------------------------------------------- 688 689void SkiaCanvas::drawGlyphs(const uint16_t* text, const float* positions, int count, 690 const SkPaint& paint, float x, float y, 691 float boundsLeft, float boundsTop, float boundsRight, float boundsBottom, 692 float totalAdvance) { 693 if (!text || !positions || count <= 0 || paint.nothingToDraw()) return; 694 // Set align to left for drawing, as we don't want individual 695 // glyphs centered or right-aligned; the offset above takes 696 // care of all alignment. 697 SkPaint paintCopy(paint); 698 paintCopy.setTextAlign(SkPaint::kLeft_Align); 699 700 SkRect bounds = SkRect::MakeLTRB(boundsLeft + x, boundsTop + y, 701 boundsRight + x, boundsBottom + y); 702 703 SkTextBlobBuilder builder; 704 const SkTextBlobBuilder::RunBuffer& buffer = builder.allocRunPos(paintCopy, count, &bounds); 705 // TODO: we could reduce the number of memcpy's if the this were exposed further up 706 // in the architecture. 707 memcpy(buffer.glyphs, text, count * sizeof(uint16_t)); 708 memcpy(buffer.pos, positions, (count << 1) * sizeof(float)); 709 710 sk_sp<SkTextBlob> textBlob(builder.make()); 711 mCanvas->drawTextBlob(textBlob, 0, 0, paintCopy); 712 drawTextDecorations(x, y, totalAdvance, paintCopy); 713} 714 715void SkiaCanvas::drawLayoutOnPath(const minikin::Layout& layout, float hOffset, float vOffset, 716 const SkPaint& paint, const SkPath& path, size_t start, size_t end) { 717 const int N = end - start; 718 SkAutoSTMalloc<1024, uint8_t> storage(N * (sizeof(uint16_t) + sizeof(SkRSXform))); 719 SkRSXform* xform = (SkRSXform*)storage.get(); 720 uint16_t* glyphs = (uint16_t*)(xform + N); 721 SkPathMeasure meas(path, false); 722 723 for (size_t i = start; i < end; i++) { 724 glyphs[i - start] = layout.getGlyphId(i); 725 float x = hOffset + layout.getX(i); 726 float y = vOffset + layout.getY(i); 727 728 SkPoint pos; 729 SkVector tan; 730 if (!meas.getPosTan(x, &pos, &tan)) { 731 pos.set(x, y); 732 tan.set(1, 0); 733 } 734 xform[i - start].fSCos = tan.x(); 735 xform[i - start].fSSin = tan.y(); 736 xform[i - start].fTx = pos.x() - tan.y() * y; 737 xform[i - start].fTy = pos.y() + tan.x() * y; 738 } 739 740 this->asSkCanvas()->drawTextRSXform(glyphs, sizeof(uint16_t) * N, xform, nullptr, paint); 741} 742 743// ---------------------------------------------------------------------------- 744// Canvas draw operations: Animations 745// ---------------------------------------------------------------------------- 746 747void SkiaCanvas::drawRoundRect(uirenderer::CanvasPropertyPrimitive* left, 748 uirenderer::CanvasPropertyPrimitive* top, uirenderer::CanvasPropertyPrimitive* right, 749 uirenderer::CanvasPropertyPrimitive* bottom, uirenderer::CanvasPropertyPrimitive* rx, 750 uirenderer::CanvasPropertyPrimitive* ry, uirenderer::CanvasPropertyPaint* paint) { 751 sk_sp<uirenderer::skiapipeline::AnimatedRoundRect> drawable( 752 new uirenderer::skiapipeline::AnimatedRoundRect(left, top, right, bottom, rx, ry, paint)); 753 mCanvas->drawDrawable(drawable.get()); 754} 755 756void SkiaCanvas::drawCircle(uirenderer::CanvasPropertyPrimitive* x, uirenderer::CanvasPropertyPrimitive* y, 757 uirenderer::CanvasPropertyPrimitive* radius, uirenderer::CanvasPropertyPaint* paint) { 758 sk_sp<uirenderer::skiapipeline::AnimatedCircle> drawable(new uirenderer::skiapipeline::AnimatedCircle(x, y, radius, paint)); 759 mCanvas->drawDrawable(drawable.get()); 760} 761 762// ---------------------------------------------------------------------------- 763// Canvas draw operations: View System 764// ---------------------------------------------------------------------------- 765 766void SkiaCanvas::drawLayer(uirenderer::DeferredLayerUpdater* layerUpdater) { 767 LOG_ALWAYS_FATAL("SkiaCanvas can't directly draw Layers"); 768} 769 770void SkiaCanvas::drawRenderNode(uirenderer::RenderNode* renderNode) { 771 LOG_ALWAYS_FATAL("SkiaCanvas can't directly draw RenderNodes"); 772} 773 774void SkiaCanvas::callDrawGLFunction(Functor* functor, 775 uirenderer::GlFunctorLifecycleListener* listener) { 776 LOG_ALWAYS_FATAL("SkiaCanvas can't directly draw GL Content"); 777} 778 779} // namespace android 780