| /* |
| * 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 "gm/gm.h" |
| #include "include/core/SkBitmap.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkMatrix.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkPicture.h" |
| #include "include/core/SkPictureRecorder.h" |
| #include "include/core/SkPoint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkShader.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| #include "include/core/SkTextBlob.h" |
| #include "include/core/SkTileMode.h" |
| #include "include/core/SkTypes.h" |
| #include "tools/ToolUtils.h" |
| #include "tools/fonts/FontToolUtils.h" |
| |
| static struct { |
| SkTileMode tmx; |
| SkTileMode tmy; |
| } kTileConfigs[] = { |
| { SkTileMode::kRepeat, SkTileMode::kRepeat }, |
| { SkTileMode::kRepeat, SkTileMode::kClamp }, |
| { SkTileMode::kMirror, SkTileMode::kRepeat }, |
| }; |
| |
| class PictureShaderGM : public skiagm::GM { |
| public: |
| PictureShaderGM(SkScalar tileSize, SkScalar sceneSize, bool useLocalMatrixWrapper = false, |
| float alpha = 1) |
| : fTileSize(tileSize) |
| , fSceneSize(sceneSize) |
| , fAlpha(alpha) |
| , fUseLocalMatrixWrapper(useLocalMatrixWrapper) |
| {} |
| |
| protected: |
| void onOnceBeforeDraw() override { |
| // Build the picture. |
| SkPictureRecorder recorder; |
| SkCanvas* pictureCanvas = recorder.beginRecording(fTileSize, fTileSize); |
| 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 getName() const override { |
| return SkStringPrintf("pictureshader%s%s", |
| fUseLocalMatrixWrapper ? "_localwrapper" : "", |
| fAlpha < 1 ? "_alpha" : ""); |
| } |
| |
| SkISize getISize() 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 < std::size(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); |
| |
| paint.setAlphaf(fAlpha); |
| |
| auto pictureShader = fPicture->makeShader(kTileConfigs[tileMode].tmx, |
| kTileConfigs[tileMode].tmy, |
| SkFilterMode::kNearest, |
| 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 = fBitmap.makeShader(kTileConfigs[tileMode].tmx, |
| kTileConfigs[tileMode].tmy, |
| SkSamplingOptions(), |
| fUseLocalMatrixWrapper ? nullptr : &localMatrix); |
| paint.setShader(fUseLocalMatrixWrapper |
| ? bitmapShader->makeWithLocalMatrix(localMatrix) |
| : bitmapShader); |
| canvas->drawRect(SkRect::MakeWH(fSceneSize, fSceneSize), paint); |
| |
| canvas->restore(); |
| } |
| |
| const SkScalar fTileSize; |
| const SkScalar fSceneSize; |
| const float fAlpha; |
| const bool fUseLocalMatrixWrapper; |
| |
| sk_sp<SkPicture> fPicture; |
| SkBitmap fBitmap; |
| |
| using INHERITED = GM; |
| }; |
| |
| DEF_GM(return new PictureShaderGM(50, 100);) |
| DEF_GM(return new PictureShaderGM(50, 100, true);) |
| DEF_GM(return new PictureShaderGM(50, 100, false, 0.25f);) |
| |
| 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<SkPicture> 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(picture->makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat, |
| SkFilterMode::kNearest)); |
| canvas->drawPaint(p); |
| } |
| |
| DEF_SIMPLE_GM(pictureshader_persp, canvas, 215, 110) { |
| enum class DrawStrategy { |
| kDirect, |
| kPictureShader, |
| }; |
| |
| auto drawPicture = [](SkCanvas* canvas, sk_sp<SkPicture> picture, DrawStrategy strategy) { |
| // Only want local upper 50x50 of 'picture' before we apply decal (or clip) |
| SkRect bounds = {0.f, 0.f, 50.f, 50.f}; |
| switch(strategy) { |
| case DrawStrategy::kDirect: { |
| canvas->clipRect(bounds, true); |
| canvas->drawPicture(picture); |
| break; } |
| case DrawStrategy::kPictureShader: { |
| SkPaint paint; |
| paint.setShader(picture->makeShader(SkTileMode::kDecal, SkTileMode::kDecal, |
| SkFilterMode::kLinear, nullptr, &bounds)); |
| canvas->drawRect({0.f, 0.f, 50.f, 50.f}, paint); |
| break; } |
| } |
| }; |
| |
| auto picture = []() { |
| sk_sp<SkTypeface> typeface = ToolUtils::DefaultPortableTypeface(); |
| SkASSERT(typeface); |
| SkFont font; |
| font.setTypeface(typeface); |
| font.setHinting(SkFontHinting::kNormal); |
| font.setSize(8.f); |
| |
| SkPaint paint; |
| paint.setColor(SK_ColorGREEN); |
| SkPictureRecorder recorder; |
| SkCanvas* record_canvas = recorder.beginRecording({0, 0, 100, 100}); |
| record_canvas->drawTextBlob(SkTextBlob::MakeFromString("Hamburgefons", font), |
| 0, 16.f, paint); |
| return recorder.finishRecordingAsPicture(); |
| }(); |
| |
| SkM44 m; |
| m.preScale(2.f, 2.f); |
| SkM44 persp = SkM44::Perspective(0.01f, 10.f, SK_ScalarPI / 3.f); |
| persp.preTranslate(0.f, 5.f, -0.1f); |
| persp.preConcat(SkM44::Rotate({0.f, 1.f, 0.f}, 0.008f)); |
| m.postConcat(persp); |
| |
| canvas->clear(SK_ColorBLACK); |
| canvas->translate(5.f, 5.f); |
| for (auto strategy : { DrawStrategy::kDirect, |
| DrawStrategy::kPictureShader }) { |
| canvas->save(); |
| |
| SkPaint outline; |
| outline.setColor(SK_ColorWHITE); |
| outline.setStyle(SkPaint::kStroke_Style); |
| outline.setStrokeWidth(1.f); |
| canvas->drawRect({-1, -1, 101, 101}, outline); |
| |
| canvas->clipRect({0, 0, 100, 100}); |
| canvas->concat(m); |
| |
| drawPicture(canvas, picture, strategy); |
| canvas->restore(); |
| |
| canvas->translate(105.f, 0.f); |
| } |
| } |