| /* |
| * Copyright 2018 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "src/core/SkAutoMalloc.h" |
| #include "src/core/SkCanvasPriv.h" |
| #include "src/core/SkReadBuffer.h" |
| #include "src/core/SkWriter32.h" |
| |
| SkAutoCanvasMatrixPaint::SkAutoCanvasMatrixPaint(SkCanvas* canvas, const SkMatrix* matrix, |
| const SkPaint* paint, const SkRect& bounds) |
| : fCanvas(canvas) |
| , fSaveCount(canvas->getSaveCount()) |
| { |
| if (paint) { |
| SkRect newBounds = bounds; |
| if (matrix) { |
| matrix->mapRect(&newBounds); |
| } |
| canvas->saveLayer(&newBounds, paint); |
| } else if (matrix) { |
| canvas->save(); |
| } |
| |
| if (matrix) { |
| canvas->concat(*matrix); |
| } |
| } |
| |
| SkAutoCanvasMatrixPaint::~SkAutoCanvasMatrixPaint() { |
| fCanvas->restoreToCount(fSaveCount); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| bool SkCanvasPriv::ReadLattice(SkReadBuffer& buffer, SkCanvas::Lattice* lattice) { |
| lattice->fXCount = buffer.readInt(); |
| lattice->fXDivs = buffer.skipT<int32_t>(lattice->fXCount); |
| lattice->fYCount = buffer.readInt(); |
| lattice->fYDivs = buffer.skipT<int32_t>(lattice->fYCount); |
| int flagCount = buffer.readInt(); |
| lattice->fRectTypes = nullptr; |
| lattice->fColors = nullptr; |
| if (flagCount) { |
| lattice->fRectTypes = buffer.skipT<SkCanvas::Lattice::RectType>(flagCount); |
| lattice->fColors = buffer.skipT<SkColor>(flagCount); |
| } |
| lattice->fBounds = buffer.skipT<SkIRect>(); |
| return buffer.isValid(); |
| } |
| |
| size_t SkCanvasPriv::WriteLattice(void* buffer, const SkCanvas::Lattice& lattice) { |
| int flagCount = lattice.fRectTypes ? (lattice.fXCount + 1) * (lattice.fYCount + 1) : 0; |
| |
| const size_t size = (1 + lattice.fXCount + 1 + lattice.fYCount + 1) * sizeof(int32_t) + |
| SkAlign4(flagCount * sizeof(SkCanvas::Lattice::RectType)) + |
| SkAlign4(flagCount * sizeof(SkColor)) + |
| sizeof(SkIRect); |
| |
| if (buffer) { |
| SkWriter32 writer(buffer, size); |
| writer.write32(lattice.fXCount); |
| writer.write(lattice.fXDivs, lattice.fXCount * sizeof(uint32_t)); |
| writer.write32(lattice.fYCount); |
| writer.write(lattice.fYDivs, lattice.fYCount * sizeof(uint32_t)); |
| writer.write32(flagCount); |
| writer.writePad(lattice.fRectTypes, flagCount * sizeof(uint8_t)); |
| writer.write(lattice.fColors, flagCount * sizeof(SkColor)); |
| SkASSERT(lattice.fBounds); |
| writer.write(lattice.fBounds, sizeof(SkIRect)); |
| SkASSERT(writer.bytesWritten() == size); |
| } |
| return size; |
| }; |
| |
| void SkCanvasPriv::WriteLattice(SkWriteBuffer& buffer, const SkCanvas::Lattice& lattice) { |
| const size_t size = WriteLattice(nullptr, lattice); |
| SkAutoSMalloc<1024> storage(size); |
| WriteLattice(storage.get(), lattice); |
| buffer.writePad32(storage.get(), size); |
| } |
| |
| void SkCanvasPriv::GetDstClipAndMatrixCounts(const SkCanvas::ImageSetEntry set[], int count, |
| int* totalDstClipCount, int* totalMatrixCount) { |
| int dstClipCount = 0; |
| int maxMatrixIndex = -1; |
| for (int i = 0; i < count; ++i) { |
| dstClipCount += 4 * set[i].fHasClip; |
| if (set[i].fMatrixIndex > maxMatrixIndex) { |
| maxMatrixIndex = set[i].fMatrixIndex; |
| } |
| } |
| |
| *totalDstClipCount = dstClipCount; |
| *totalMatrixCount = maxMatrixIndex + 1; |
| } |