2 * Copyright 2014 Google Inc.
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
9 #include "sk_tool_utils.h"
13 #include "SkPicture.h"
14 #include "SkPictureRecorder.h"
18 SkShader::TileMode tmx;
19 SkShader::TileMode tmy;
21 { SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode },
22 { SkShader::kRepeat_TileMode, SkShader::kClamp_TileMode },
23 { SkShader::kMirror_TileMode, SkShader::kRepeat_TileMode },
26 class PictureShaderGM : public skiagm::GM {
28 PictureShaderGM(SkScalar tileSize, SkScalar sceneSize)
30 , fSceneSize(sceneSize) {
34 void onOnceBeforeDraw() override {
36 SkPictureRecorder recorder;
37 SkCanvas* pictureCanvas = recorder.beginRecording(fTileSize, fTileSize, nullptr, 0);
38 this->drawTile(pictureCanvas);
39 fPicture = recorder.finishRecordingAsPicture();
41 // Build a reference bitmap.
42 fBitmap.allocN32Pixels(SkScalarCeilToInt(fTileSize), SkScalarCeilToInt(fTileSize));
43 fBitmap.eraseColor(SK_ColorTRANSPARENT);
44 SkCanvas bitmapCanvas(fBitmap);
45 this->drawTile(&bitmapCanvas);
49 SkString onShortName() override {
50 return SkString("pictureshader");
53 SkISize onISize() override {
54 return SkISize::Make(1400, 1450);
57 void onDraw(SkCanvas* canvas) override {
58 this->drawSceneColumn(canvas, SkPoint::Make(0, 0), 1, 1, 0);
59 this->drawSceneColumn(canvas, SkPoint::Make(0, fSceneSize * 6.4f), 1, 2, 0);
60 this->drawSceneColumn(canvas, SkPoint::Make(fSceneSize * 2.4f, 0), 1, 1, 1);
61 this->drawSceneColumn(canvas, SkPoint::Make(fSceneSize * 2.4f, fSceneSize * 6.4f), 1, 1, 2);
62 this->drawSceneColumn(canvas, SkPoint::Make(fSceneSize * 4.8f, 0), 2, 1, 0);
63 this->drawSceneColumn(canvas, SkPoint::Make(fSceneSize * 9.6f, 0), 2, 2, 0);
65 // One last custom row to exercise negative scaling
66 SkMatrix ctm, localMatrix;
67 ctm.setTranslate(fSceneSize * 2.1f, fSceneSize * 13.8f);
69 localMatrix.setScale(2, 2);
70 this->drawScene(canvas, ctm, localMatrix, 0);
72 ctm.setTranslate(fSceneSize * 2.4f, fSceneSize * 12.8f);
73 localMatrix.setScale(-1, -1);
74 this->drawScene(canvas, ctm, localMatrix, 0);
76 ctm.setTranslate(fSceneSize * 4.8f, fSceneSize * 12.3f);
78 this->drawScene(canvas, ctm, localMatrix, 0);
80 ctm.setTranslate(fSceneSize * 13.8f, fSceneSize * 14.3f);
82 localMatrix.setTranslate(fTileSize / 4, fTileSize / 4);
83 localMatrix.preRotate(45);
84 localMatrix.preScale(-2, -2);
85 this->drawScene(canvas, ctm, localMatrix, 0);
89 void drawSceneColumn(SkCanvas* canvas, const SkPoint& pos, SkScalar scale, SkScalar localScale,
91 SkMatrix ctm, localMatrix;
93 ctm.setTranslate(pos.x(), pos.y());
94 ctm.preScale(scale, scale);
95 localMatrix.setScale(localScale, localScale);
96 this->drawScene(canvas, ctm, localMatrix, tileMode);
98 ctm.setTranslate(pos.x(), pos.y() + fSceneSize * 1.2f * scale);
99 ctm.preScale(scale, scale);
100 localMatrix.setTranslate(fTileSize / 4, fTileSize / 4);
101 localMatrix.preScale(localScale, localScale);
102 this->drawScene(canvas, ctm, localMatrix, tileMode);
104 ctm.setTranslate(pos.x(), pos.y() + fSceneSize * 2.4f * scale);
105 ctm.preScale(scale, scale);
106 localMatrix.setRotate(45);
107 localMatrix.preScale(localScale, localScale);
108 this->drawScene(canvas, ctm, localMatrix, tileMode);
110 ctm.setTranslate(pos.x(), pos.y() + fSceneSize * 3.6f * scale);
111 ctm.preScale(scale, scale);
112 localMatrix.setSkew(1, 0);
113 localMatrix.preScale(localScale, localScale);
114 this->drawScene(canvas, ctm, localMatrix, tileMode);
116 ctm.setTranslate(pos.x(), pos.y() + fSceneSize * 4.8f * scale);
117 ctm.preScale(scale, scale);
118 localMatrix.setTranslate(fTileSize / 4, fTileSize / 4);
119 localMatrix.preRotate(45);
120 localMatrix.preScale(localScale, localScale);
121 this->drawScene(canvas, ctm, localMatrix, tileMode);
124 void drawTile(SkCanvas* canvas) {
126 paint.setColor(SK_ColorGREEN);
127 paint.setStyle(SkPaint::kFill_Style);
128 paint.setAntiAlias(true);
130 canvas->drawCircle(fTileSize / 4, fTileSize / 4, fTileSize / 4, paint);
131 canvas->drawRect(SkRect::MakeXYWH(fTileSize / 2, fTileSize / 2,
132 fTileSize / 2, fTileSize / 2), paint);
134 paint.setColor(SK_ColorRED);
135 canvas->drawLine(fTileSize / 2, fTileSize * 1 / 3,
136 fTileSize / 2, fTileSize * 2 / 3, paint);
137 canvas->drawLine(fTileSize * 1 / 3, fTileSize / 2,
138 fTileSize * 2 / 3, fTileSize / 2, paint);
141 void drawScene(SkCanvas* canvas, const SkMatrix& matrix, const SkMatrix& localMatrix,
143 SkASSERT(tileMode < SK_ARRAY_COUNT(kTileConfigs));
146 paint.setStyle(SkPaint::kFill_Style);
147 paint.setColor(sk_tool_utils::color_to_565(SK_ColorLTGRAY));
150 canvas->concat(matrix);
151 canvas->drawRect(SkRect::MakeWH(fSceneSize, fSceneSize), paint);
152 canvas->drawRect(SkRect::MakeXYWH(fSceneSize * 1.1f, 0, fSceneSize, fSceneSize), paint);
154 paint.setShader(SkShader::MakePictureShader(fPicture, kTileConfigs[tileMode].tmx,
155 kTileConfigs[tileMode].tmy, &localMatrix,
157 canvas->drawRect(SkRect::MakeWH(fSceneSize, fSceneSize), paint);
159 canvas->translate(fSceneSize * 1.1f, 0);
161 paint.setShader(SkShader::MakeBitmapShader(fBitmap,
162 kTileConfigs[tileMode].tmx,
163 kTileConfigs[tileMode].tmy,
165 canvas->drawRect(SkRect::MakeWH(fSceneSize, fSceneSize), paint);
173 sk_sp<SkPicture> fPicture;
176 typedef GM INHERITED;
179 DEF_GM(return new PictureShaderGM(50, 100);)
181 DEF_SIMPLE_GM(tiled_picture_shader, canvas, 400, 400) {
182 // https://code.google.com/p/skia/issues/detail?id=3398
183 SkRect tile = SkRect::MakeWH(100, 100);
185 SkPictureRecorder recorder;
186 SkCanvas* c = recorder.beginRecording(tile);
191 p.setColor(sk_tool_utils::color_to_565(0xFF303F9F)); // dark blue
193 p.setColor(sk_tool_utils::color_to_565(0xFFC5CAE9)); // light blue
194 p.setStrokeWidth(10);
195 c->drawLine(20, 20, 80, 80, p);
197 sk_sp<SkPicture> picture(recorder.finishRecordingAsPicture());
199 p.setColor(sk_tool_utils::color_to_565(0xFF8BC34A)); // green
200 canvas->drawPaint(p);
202 canvas->clipRect(SkRect::MakeXYWH(0, 0, 400, 350));
203 p.setColor(sk_tool_utils::color_to_565(0xFFB6B6B6)); // gray
204 canvas->drawPaint(p);
206 p.setShader(SkShader::MakePictureShader(std::move(picture), SkShader::kRepeat_TileMode,
207 SkShader::kRepeat_TileMode,
209 canvas->drawPaint(p);