/* * Copyright 2014 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "ToolUtils.h" #include "gm.h" #include "SkBitmap.h" #include "SkPaint.h" #include "SkPicture.h" #include "SkPictureRecorder.h" #include "SkShader.h" static struct { SkShader::TileMode tmx; SkShader::TileMode tmy; } kTileConfigs[] = { { SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode }, { SkShader::kRepeat_TileMode, SkShader::kClamp_TileMode }, { SkShader::kMirror_TileMode, SkShader::kRepeat_TileMode }, }; class PictureShaderGM : public skiagm::GM { public: PictureShaderGM(SkScalar tileSize, SkScalar sceneSize, bool useLocalMatrixWrapper = false) : fTileSize(tileSize) , fSceneSize(sceneSize) , fUseLocalMatrixWrapper(useLocalMatrixWrapper) {} protected: void onOnceBeforeDraw() override { // Build the picture. SkPictureRecorder recorder; SkCanvas* pictureCanvas = recorder.beginRecording(fTileSize, fTileSize, nullptr, 0); this->drawTile(pictureCanvas); fPicture = recorder.finishRecordingAsPicture(); // Build a reference bitmap. fBitmap.allocN32Pixels(SkScalarCeilToInt(fTileSize), SkScalarCeilToInt(fTileSize)); fBitmap.eraseColor(SK_ColorTRANSPARENT); SkCanvas bitmapCanvas(fBitmap); this->drawTile(&bitmapCanvas); } SkString onShortName() override { return SkStringPrintf("pictureshader%s", fUseLocalMatrixWrapper ? "_localwrapper" : ""); } SkISize onISize() override { return SkISize::Make(1400, 1450); } void onDraw(SkCanvas* canvas) override { this->drawSceneColumn(canvas, SkPoint::Make(0, 0), 1, 1, 0); this->drawSceneColumn(canvas, SkPoint::Make(0, fSceneSize * 6.4f), 1, 2, 0); this->drawSceneColumn(canvas, SkPoint::Make(fSceneSize * 2.4f, 0), 1, 1, 1); this->drawSceneColumn(canvas, SkPoint::Make(fSceneSize * 2.4f, fSceneSize * 6.4f), 1, 1, 2); this->drawSceneColumn(canvas, SkPoint::Make(fSceneSize * 4.8f, 0), 2, 1, 0); this->drawSceneColumn(canvas, SkPoint::Make(fSceneSize * 9.6f, 0), 2, 2, 0); // One last custom row to exercise negative scaling SkMatrix ctm, localMatrix; ctm.setTranslate(fSceneSize * 2.1f, fSceneSize * 13.8f); ctm.preScale(-1, -1); localMatrix.setScale(2, 2); this->drawScene(canvas, ctm, localMatrix, 0); ctm.setTranslate(fSceneSize * 2.4f, fSceneSize * 12.8f); localMatrix.setScale(-1, -1); this->drawScene(canvas, ctm, localMatrix, 0); ctm.setTranslate(fSceneSize * 4.8f, fSceneSize * 12.3f); ctm.preScale(2, 2); this->drawScene(canvas, ctm, localMatrix, 0); ctm.setTranslate(fSceneSize * 13.8f, fSceneSize * 14.3f); ctm.preScale(-2, -2); localMatrix.setTranslate(fTileSize / 4, fTileSize / 4); localMatrix.preRotate(45); localMatrix.preScale(-2, -2); this->drawScene(canvas, ctm, localMatrix, 0); } private: void drawSceneColumn(SkCanvas* canvas, const SkPoint& pos, SkScalar scale, SkScalar localScale, unsigned tileMode) { SkMatrix ctm, localMatrix; ctm.setTranslate(pos.x(), pos.y()); ctm.preScale(scale, scale); localMatrix.setScale(localScale, localScale); this->drawScene(canvas, ctm, localMatrix, tileMode); ctm.setTranslate(pos.x(), pos.y() + fSceneSize * 1.2f * scale); ctm.preScale(scale, scale); localMatrix.setTranslate(fTileSize / 4, fTileSize / 4); localMatrix.preScale(localScale, localScale); this->drawScene(canvas, ctm, localMatrix, tileMode); ctm.setTranslate(pos.x(), pos.y() + fSceneSize * 2.4f * scale); ctm.preScale(scale, scale); localMatrix.setRotate(45); localMatrix.preScale(localScale, localScale); this->drawScene(canvas, ctm, localMatrix, tileMode); ctm.setTranslate(pos.x(), pos.y() + fSceneSize * 3.6f * scale); ctm.preScale(scale, scale); localMatrix.setSkew(1, 0); localMatrix.preScale(localScale, localScale); this->drawScene(canvas, ctm, localMatrix, tileMode); ctm.setTranslate(pos.x(), pos.y() + fSceneSize * 4.8f * scale); ctm.preScale(scale, scale); localMatrix.setTranslate(fTileSize / 4, fTileSize / 4); localMatrix.preRotate(45); localMatrix.preScale(localScale, localScale); this->drawScene(canvas, ctm, localMatrix, tileMode); } void drawTile(SkCanvas* canvas) { SkPaint paint; paint.setColor(SK_ColorGREEN); paint.setStyle(SkPaint::kFill_Style); paint.setAntiAlias(true); canvas->drawCircle(fTileSize / 4, fTileSize / 4, fTileSize / 4, paint); canvas->drawRect(SkRect::MakeXYWH(fTileSize / 2, fTileSize / 2, fTileSize / 2, fTileSize / 2), paint); paint.setColor(SK_ColorRED); canvas->drawLine(fTileSize / 2, fTileSize * 1 / 3, fTileSize / 2, fTileSize * 2 / 3, paint); canvas->drawLine(fTileSize * 1 / 3, fTileSize / 2, fTileSize * 2 / 3, fTileSize / 2, paint); } void drawScene(SkCanvas* canvas, const SkMatrix& matrix, const SkMatrix& localMatrix, unsigned tileMode) { SkASSERT(tileMode < SK_ARRAY_COUNT(kTileConfigs)); SkPaint paint; paint.setStyle(SkPaint::kFill_Style); paint.setColor(SK_ColorLTGRAY); canvas->save(); canvas->concat(matrix); canvas->drawRect(SkRect::MakeWH(fSceneSize, fSceneSize), paint); canvas->drawRect(SkRect::MakeXYWH(fSceneSize * 1.1f, 0, fSceneSize, fSceneSize), paint); auto pictureShader = SkShader::MakePictureShader(fPicture, kTileConfigs[tileMode].tmx, kTileConfigs[tileMode].tmy, fUseLocalMatrixWrapper ? nullptr : &localMatrix, nullptr); paint.setShader(fUseLocalMatrixWrapper ? pictureShader->makeWithLocalMatrix(localMatrix) : pictureShader); canvas->drawRect(SkRect::MakeWH(fSceneSize, fSceneSize), paint); canvas->translate(fSceneSize * 1.1f, 0); auto bitmapShader = SkShader::MakeBitmapShader(fBitmap, kTileConfigs[tileMode].tmx, kTileConfigs[tileMode].tmy, fUseLocalMatrixWrapper ? nullptr : &localMatrix); paint.setShader(fUseLocalMatrixWrapper ? bitmapShader->makeWithLocalMatrix(localMatrix) : bitmapShader); canvas->drawRect(SkRect::MakeWH(fSceneSize, fSceneSize), paint); canvas->restore(); } sk_sp fPicture; SkBitmap fBitmap; SkScalar fTileSize; SkScalar fSceneSize; bool fUseLocalMatrixWrapper; typedef GM INHERITED; }; DEF_GM(return new PictureShaderGM(50, 100);) DEF_GM(return new PictureShaderGM(50, 100, true);) DEF_SIMPLE_GM(tiled_picture_shader, canvas, 400, 400) { // https://code.google.com/p/skia/issues/detail?id=3398 SkRect tile = SkRect::MakeWH(100, 100); SkPictureRecorder recorder; SkCanvas* c = recorder.beginRecording(tile); SkRect r = tile; r.inset(4, 4); SkPaint p; p.setColor(ToolUtils::color_to_565(0xFF303F9F)); // dark blue c->drawRect(r, p); p.setColor(ToolUtils::color_to_565(0xFFC5CAE9)); // light blue p.setStrokeWidth(10); c->drawLine(20, 20, 80, 80, p); sk_sp picture(recorder.finishRecordingAsPicture()); p.setColor(ToolUtils::color_to_565(0xFF8BC34A)); // green canvas->drawPaint(p); canvas->clipRect(SkRect::MakeXYWH(0, 0, 400, 350)); p.setColor(0xFFB6B6B6); // gray canvas->drawPaint(p); p.setShader(SkShader::MakePictureShader(std::move(picture), SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, nullptr, nullptr)); canvas->drawPaint(p); }