/* * 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.h" #include "SkPaint.h" #include "SkPicture.h" #include "SkPictureRecorder.h" #include "SkShader.h" static const SkScalar kPictureSize = SK_Scalar1; static const SkScalar kFillSize = 100; static const unsigned kRowSize = 6; static const 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.setColor(SK_ColorGREEN); paint.setStyle(SkPaint::kFill_Style); paint.setAntiAlias(true); canvas->drawCircle(pictureSize / 4, pictureSize / 4, pictureSize / 4, paint); 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: uint32_t onGetFlags() const SK_OVERRIDE { return kSkipTiled_Flag; } SkString onShortName() SK_OVERRIDE { return SkString("pictureshadertile"); } SkISize onISize() SK_OVERRIDE { return SkISize::Make(800, 600); } void onOnceBeforeDraw() SK_OVERRIDE { SkPictureRecorder recorder; SkCanvas* pictureCanvas = recorder.beginRecording(kPictureSize, kPictureSize); draw_scene(pictureCanvas, kPictureSize); SkAutoTUnref<SkPicture> picture(recorder.endRecording()); 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); SkAutoTUnref<SkPicture> offsetPicture(recorder.endRecording()); for (unsigned i = 0; i < SK_ARRAY_COUNT(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)); SkPicture* picturePtr = picture.get(); SkRect* tilePtr = &tile; if (tile == SkRect::MakeWH(kPictureSize, kPictureSize)) { // When the tile == picture bounds, exercise the picture + offset path. picturePtr = offsetPicture.get(); tilePtr = NULL; } fShaders[i].reset(SkShader::CreatePictureShader(picturePtr, SkShader::kRepeat_TileMode, SkShader::kRepeat_TileMode, &localMatrix, tilePtr)); } } void onDraw(SkCanvas* canvas) SK_OVERRIDE { canvas->clear(SK_ColorBLACK); SkPaint paint; paint.setStyle(SkPaint::kFill_Style); for (unsigned i = 0; i < SK_ARRAY_COUNT(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: SkAutoTUnref<SkShader> fShaders[SK_ARRAY_COUNT(tiles)]; typedef GM INHERITED; }; DEF_GM( return SkNEW(PictureShaderTileGM); )