| /* |
| * 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/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/SkTileMode.h" |
| #include "include/core/SkTypes.h" |
| |
| constexpr SkScalar kPictureSize = SK_Scalar1; |
| constexpr SkScalar kFillSize = 100; |
| constexpr unsigned kRowSize = 6; |
| |
| constexpr struct { |
| SkScalar x, y, w, h; |
| SkScalar offsetX, offsetY; |
| } tiles[] = { |
| { 0, 0, 1, 1, 0, 0 }, |
| { -0.5f, -0.5f, 1, 1, 0, 0 }, |
| { 0.5f, 0.5f, 1, 1, 0, 0 }, |
| |
| { 0, 0, 1.5f, 1.5f, 0, 0 }, |
| { -0.5f, -0.5f, 1.5f, 1.5f, 0, 0 }, |
| { 0.5f, 0.5f, 1.5f, 1.5f, 0, 0 }, |
| |
| { 0, 0, 0.5f, 0.5f, 0, 0 }, |
| { 0.25f, 0.25f, 0.5f, 0.5f, 0, 0 }, |
| { -0.25f, -0.25f, 0.5f, 0.5f, 0, 0 }, |
| |
| { 0, 0, 1, 1, 0.5f, 0.5f }, |
| { -0.5f, -0.5f, 1, 1, 0.5f, 0.5f }, |
| { 0.5f, 0.5f, 1, 1, 0.5f, 0.5f }, |
| |
| { 0, 0, 1.5f, 1.5f, 0.5f, 0.5f }, |
| { -0.5f, -0.5f, 1.5f, 1.5f, 0.5f, 0.5f }, |
| { 0.5f, 0.5f, 1.5f, 1.5f, 0.5f, 0.5f }, |
| |
| { 0, 0, 1.5f, 1, 0, 0 }, |
| { -0.5f, -0.5f, 1.5f, 1, 0, 0 }, |
| { 0.5f, 0.5f, 1.5f, 1, 0, 0 }, |
| |
| { 0, 0, 0.5f, 1, 0, 0 }, |
| { 0.25f, 0.25f, 0.5f, 1, 0, 0 }, |
| { -0.25f, -0.25f, 0.5f, 1, 0, 0 }, |
| |
| { 0, 0, 1, 1.5f, 0, 0 }, |
| { -0.5f, -0.5f, 1, 1.5f, 0, 0 }, |
| { 0.5f, 0.5f, 1, 1.5f, 0, 0 }, |
| |
| { 0, 0, 1, 0.5f, 0, 0 }, |
| { 0.25f, 0.25f, 1, 0.5f, 0, 0 }, |
| { -0.25f, -0.25f, 1, 0.5f, 0, 0 }, |
| }; |
| |
| static void draw_scene(SkCanvas* canvas, SkScalar pictureSize) { |
| canvas->clear(SK_ColorWHITE); |
| |
| SkPaint paint; |
| paint.setStyle(SkPaint::kFill_Style); |
| paint.setAntiAlias(true); |
| |
| paint.setColor(SK_ColorGREEN); |
| canvas->drawCircle(pictureSize / 4, pictureSize / 4, pictureSize / 4, paint); |
| paint.setColor(SK_ColorBLUE); |
| canvas->drawRect(SkRect::MakeXYWH(pictureSize / 2, pictureSize / 2, |
| pictureSize / 2, pictureSize / 2), paint); |
| |
| paint.setColor(SK_ColorRED); |
| canvas->drawLine(pictureSize / 2, pictureSize * 1 / 3, |
| pictureSize / 2, pictureSize * 2 / 3, paint); |
| canvas->drawLine(pictureSize * 1 / 3, pictureSize / 2, |
| pictureSize * 2 / 3, pictureSize / 2, paint); |
| |
| paint.setColor(SK_ColorBLACK); |
| paint.setStyle(SkPaint::kStroke_Style); |
| canvas->drawRect(SkRect::MakeWH(pictureSize, pictureSize), paint); |
| } |
| |
| class PictureShaderTileGM : public skiagm::GM { |
| protected: |
| SkString getName() const override { return SkString("pictureshadertile"); } |
| |
| SkISize getISize() override { return SkISize::Make(800, 600); } |
| |
| void onOnceBeforeDraw() override { |
| SkPictureRecorder recorder; |
| SkCanvas* pictureCanvas = recorder.beginRecording(kPictureSize, kPictureSize); |
| draw_scene(pictureCanvas, kPictureSize); |
| sk_sp<SkPicture> picture(recorder.finishRecordingAsPicture()); |
| |
| SkPoint offset = SkPoint::Make(100, 100); |
| pictureCanvas = recorder.beginRecording(SkRect::MakeXYWH(offset.x(), offset.y(), |
| kPictureSize, kPictureSize)); |
| pictureCanvas->translate(offset.x(), offset.y()); |
| draw_scene(pictureCanvas, kPictureSize); |
| sk_sp<SkPicture> offsetPicture(recorder.finishRecordingAsPicture()); |
| |
| for (unsigned i = 0; i < std::size(tiles); ++i) { |
| SkRect tile = SkRect::MakeXYWH(tiles[i].x * kPictureSize, |
| tiles[i].y * kPictureSize, |
| tiles[i].w * kPictureSize, |
| tiles[i].h * kPictureSize); |
| SkMatrix localMatrix; |
| localMatrix.setTranslate(tiles[i].offsetX * kPictureSize, |
| tiles[i].offsetY * kPictureSize); |
| localMatrix.postScale(kFillSize / (2 * kPictureSize), |
| kFillSize / (2 * kPictureSize)); |
| |
| sk_sp<SkPicture> pictureRef = picture; |
| SkRect* tilePtr = &tile; |
| |
| if (tile == SkRect::MakeWH(kPictureSize, kPictureSize)) { |
| // When the tile == picture bounds, exercise the picture + offset path. |
| pictureRef = offsetPicture; |
| tilePtr = nullptr; |
| } |
| |
| fShaders[i] = pictureRef->makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat, |
| SkFilterMode::kNearest, &localMatrix, tilePtr); |
| } |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| canvas->clear(SK_ColorBLACK); |
| |
| SkPaint paint; |
| paint.setStyle(SkPaint::kFill_Style); |
| |
| for (unsigned i = 0; i < std::size(fShaders); ++i) { |
| paint.setShader(fShaders[i]); |
| |
| canvas->save(); |
| canvas->translate((i % kRowSize) * kFillSize * 1.1f, |
| (i / kRowSize) * kFillSize * 1.1f); |
| canvas->drawRect(SkRect::MakeWH(kFillSize, kFillSize), paint); |
| canvas->restore(); |
| } |
| } |
| |
| private: |
| sk_sp<SkShader> fShaders[std::size(tiles)]; |
| |
| using INHERITED = GM; |
| }; |
| |
| DEF_GM(return new PictureShaderTileGM;) |