1 /*
2 * Copyright 2018 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "src/core/SkCanvasPriv.h"
9
10 #include "src/base/SkAutoMalloc.h"
11 #include "src/core/SkDevice.h"
12 #include "src/core/SkReadBuffer.h"
13 #include "src/core/SkWriter32.h"
14
15 #include <locale>
16
SkAutoCanvasMatrixPaint(SkCanvas * canvas,const SkMatrix * matrix,const SkPaint * paint,const SkRect & bounds)17 SkAutoCanvasMatrixPaint::SkAutoCanvasMatrixPaint(SkCanvas* canvas, const SkMatrix* matrix,
18 const SkPaint* paint, const SkRect& bounds)
19 : fCanvas(canvas)
20 , fSaveCount(canvas->getSaveCount()) {
21 if (paint) {
22 SkRect newBounds = bounds;
23 if (matrix) {
24 matrix->mapRect(&newBounds);
25 }
26 canvas->saveLayer(&newBounds, paint);
27 } else if (matrix) {
28 canvas->save();
29 }
30
31 if (matrix) {
32 canvas->concat(*matrix);
33 }
34 }
35
~SkAutoCanvasMatrixPaint()36 SkAutoCanvasMatrixPaint::~SkAutoCanvasMatrixPaint() {
37 fCanvas->restoreToCount(fSaveCount);
38 }
39
40 ///////////////////////////////////////////////////////////////////////////////////////////////////
41
ReadLattice(SkReadBuffer & buffer,SkCanvas::Lattice * lattice)42 bool SkCanvasPriv::ReadLattice(SkReadBuffer& buffer, SkCanvas::Lattice* lattice) {
43 lattice->fXCount = buffer.readInt();
44 lattice->fXDivs = buffer.skipT<int32_t>(lattice->fXCount);
45 lattice->fYCount = buffer.readInt();
46 lattice->fYDivs = buffer.skipT<int32_t>(lattice->fYCount);
47 int flagCount = buffer.readInt();
48 lattice->fRectTypes = nullptr;
49 lattice->fColors = nullptr;
50 if (flagCount) {
51 lattice->fRectTypes = buffer.skipT<SkCanvas::Lattice::RectType>(flagCount);
52 lattice->fColors = buffer.skipT<SkColor>(flagCount);
53 }
54 lattice->fBounds = buffer.skipT<SkIRect>();
55 return buffer.isValid();
56 }
57
WriteLattice(void * buffer,const SkCanvas::Lattice & lattice)58 size_t SkCanvasPriv::WriteLattice(void* buffer, const SkCanvas::Lattice& lattice) {
59 int flagCount = lattice.fRectTypes ? (lattice.fXCount + 1) * (lattice.fYCount + 1) : 0;
60
61 const size_t size = (1 + lattice.fXCount + 1 + lattice.fYCount + 1) * sizeof(int32_t) +
62 SkAlign4(flagCount * sizeof(SkCanvas::Lattice::RectType)) +
63 SkAlign4(flagCount * sizeof(SkColor)) +
64 sizeof(SkIRect);
65
66 if (buffer) {
67 SkWriter32 writer(buffer, size);
68 writer.write32(lattice.fXCount);
69 writer.write(lattice.fXDivs, lattice.fXCount * sizeof(uint32_t));
70 writer.write32(lattice.fYCount);
71 writer.write(lattice.fYDivs, lattice.fYCount * sizeof(uint32_t));
72 writer.write32(flagCount);
73 writer.writePad(lattice.fRectTypes, flagCount * sizeof(uint8_t));
74 writer.write(lattice.fColors, flagCount * sizeof(SkColor));
75 SkASSERT(lattice.fBounds);
76 writer.write(lattice.fBounds, sizeof(SkIRect));
77 SkASSERT(writer.bytesWritten() == size);
78 }
79 return size;
80 }
81
WriteLattice(SkWriteBuffer & buffer,const SkCanvas::Lattice & lattice)82 void SkCanvasPriv::WriteLattice(SkWriteBuffer& buffer, const SkCanvas::Lattice& lattice) {
83 const size_t size = WriteLattice(nullptr, lattice);
84 SkAutoSMalloc<1024> storage(size);
85 WriteLattice(storage.get(), lattice);
86 buffer.writePad32(storage.get(), size);
87 }
88
GetDstClipAndMatrixCounts(const SkCanvas::ImageSetEntry set[],int count,int * totalDstClipCount,int * totalMatrixCount)89 void SkCanvasPriv::GetDstClipAndMatrixCounts(const SkCanvas::ImageSetEntry set[], int count,
90 int* totalDstClipCount, int* totalMatrixCount) {
91 int dstClipCount = 0;
92 int maxMatrixIndex = -1;
93 for (int i = 0; i < count; ++i) {
94 dstClipCount += 4 * set[i].fHasClip;
95 if (set[i].fMatrixIndex > maxMatrixIndex) {
96 maxMatrixIndex = set[i].fMatrixIndex;
97 }
98 }
99
100 *totalDstClipCount = dstClipCount;
101 *totalMatrixCount = maxMatrixIndex + 1;
102 }
103
104 #if GR_TEST_UTILS && defined(SK_GANESH)
105
106 #include "src/gpu/ganesh/Device_v1.h"
107
TopDeviceSurfaceDrawContext(SkCanvas * canvas)108 skgpu::v1::SurfaceDrawContext* SkCanvasPriv::TopDeviceSurfaceDrawContext(SkCanvas* canvas) {
109 if (auto gpuDevice = canvas->topDevice()->asGaneshDevice()) {
110 return gpuDevice->surfaceDrawContext();
111 }
112
113 return nullptr;
114 }
115
TopDeviceSurfaceFillContext(SkCanvas * canvas)116 skgpu::v1::SurfaceFillContext* SkCanvasPriv::TopDeviceSurfaceFillContext(SkCanvas* canvas) {
117 if (auto gpuDevice = canvas->topDevice()->asGaneshDevice()) {
118 return gpuDevice->surfaceFillContext();
119 }
120
121 return nullptr;
122 }
123
124 #endif // GR_TEST_UTILS && defined(SK_GANESH)
125
126
127 #if defined(SK_GANESH)
128 #include "src/gpu/ganesh/Device_v1.h"
129
TopDeviceTargetProxy(SkCanvas * canvas)130 GrRenderTargetProxy* SkCanvasPriv::TopDeviceTargetProxy(SkCanvas* canvas) {
131 if (auto gpuDevice = canvas->topDevice()->asGaneshDevice()) {
132 return gpuDevice->targetProxy();
133 }
134
135 return nullptr;
136 }
137
138 #else // defined(SK_GANESH)
139
TopDeviceTargetProxy(SkCanvas * canvas)140 GrRenderTargetProxy* SkCanvasPriv::TopDeviceTargetProxy(SkCanvas* canvas) {
141 return nullptr;
142 }
143
144 #endif // defined(SK_GANESH)
145
146 #if GRAPHITE_TEST_UTILS
147 #include "src/gpu/graphite/Device.h"
148
TopDeviceGraphiteTargetProxy(SkCanvas * canvas)149 skgpu::graphite::TextureProxy* SkCanvasPriv::TopDeviceGraphiteTargetProxy(SkCanvas* canvas) {
150 if (auto gpuDevice = canvas->topDevice()->asGraphiteDevice()) {
151 return gpuDevice->target();
152 }
153 return nullptr;
154 }
155
156 #endif // GRAPHITE_TEST_UTILS
157