2014-08-06 20:07:15 +00:00
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/*
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* Copyright 2014 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "SkPaint.h"
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#include "SkPicture.h"
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#include "SkPictureRecorder.h"
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#include "SkShader.h"
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static const SkScalar kPictureSize = SK_Scalar1;
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static const SkScalar kFillSize = 100;
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static const unsigned kRowSize = 6;
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static const struct {
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SkScalar x, y, w, h;
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SkScalar offsetX, offsetY;
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} tiles[] = {
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{ 0, 0, 1, 1, 0, 0 },
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{ 0.5f, 0.5f, 1, 1, 0, 0 },
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{ -0.5f, -0.5f, 1, 1, 0, 0 },
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{ 0, 0, 1.5f, 1.5f, 0, 0 },
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{ 0.5f, 0.5f, 1.5f, 1.5f, 0, 0 },
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{ -0.5f, -0.5f, 1.5f, 1.5f, 0, 0 },
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{ 0, 0, 0.5f, 0.5f, 0, 0 },
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{ -0.25f, -0.25f, 0.5f, 0.5f, 0, 0 },
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{ 0.25f, 0.25f, 0.5f, 0.5f, 0, 0 },
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{ 0, 0, 1, 1, 0.5f, 0.5f },
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{ 0.5f, 0.5f, 1, 1, 0.5f, 0.5f },
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{ -0.5f, -0.5f, 1, 1, 0.5f, 0.5f },
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{ 0, 0, 1.5f, 1.5f, 0.5f, 0.5f },
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{ 0.5f, 0.5f, 1.5f, 1.5f, 0.5f, 0.5f },
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{ -0.5f, -0.5f, 1.5f, 1.5f, 0.5f, 0.5f },
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{ 0, 0, 1.5f, 1, 0, 0 },
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{ 0.5f, 0.5f, 1.5f, 1, 0, 0 },
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{ -0.5f, -0.5f, 1.5f, 1, 0, 0 },
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{ 0, 0, 0.5f, 1, 0, 0 },
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{ -0.25f, -0.25f, 0.5f, 1, 0, 0 },
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{ 0.25f, 0.25f, 0.5f, 1, 0, 0 },
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{ 0, 0, 1, 1.5f, 0, 0 },
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{ 0.5f, 0.5f, 1, 1.5f, 0, 0 },
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{ -0.5f, -0.5f, 1, 1.5f, 0, 0 },
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{ 0, 0, 1, 0.5f, 0, 0 },
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{ -0.25f, -0.25f, 1, 0.5f, 0, 0 },
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{ 0.25f, 0.25f, 1, 0.5f, 0, 0 },
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};
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class PictureShaderTileGM : public skiagm::GM {
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public:
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PictureShaderTileGM() {
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SkPictureRecorder recorder;
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2014-08-29 15:03:56 +00:00
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SkCanvas* pictureCanvas = recorder.beginRecording(kPictureSize, kPictureSize, NULL, 0);
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2014-08-06 20:07:15 +00:00
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drawScene(pictureCanvas, kPictureSize);
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SkAutoTUnref<SkPicture> picture(recorder.endRecording());
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for (unsigned i = 0; i < SK_ARRAY_COUNT(tiles); ++i) {
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SkRect tile = SkRect::MakeXYWH(tiles[i].x * kPictureSize,
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tiles[i].y * kPictureSize,
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tiles[i].w * kPictureSize,
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tiles[i].h * kPictureSize);
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SkMatrix localMatrix;
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localMatrix.setTranslate(tiles[i].offsetX * kPictureSize,
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tiles[i].offsetY * kPictureSize);
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localMatrix.postScale(kFillSize / (2 * kPictureSize),
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kFillSize / (2 * kPictureSize));
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fShaders[i].reset(SkShader::CreatePictureShader(picture,
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SkShader::kRepeat_TileMode,
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SkShader::kRepeat_TileMode,
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&localMatrix,
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&tile));
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}
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}
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protected:
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virtual uint32_t onGetFlags() const SK_OVERRIDE {
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return kSkipTiled_Flag;
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}
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virtual SkString onShortName() SK_OVERRIDE {
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return SkString("pictureshadertile");
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}
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virtual SkISize onISize() SK_OVERRIDE {
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return SkISize::Make(800, 600);
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}
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virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
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canvas->clear(SK_ColorBLACK);
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SkPaint paint;
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paint.setStyle(SkPaint::kFill_Style);
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for (unsigned i = 0; i < SK_ARRAY_COUNT(fShaders); ++i) {
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paint.setShader(fShaders[i]);
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canvas->save();
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canvas->translate((i % kRowSize) * kFillSize * 1.1f,
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(i / kRowSize) * kFillSize * 1.1f);
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canvas->drawRect(SkRect::MakeWH(kFillSize, kFillSize), paint);
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canvas->restore();
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}
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}
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private:
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void drawScene(SkCanvas* canvas, SkScalar pictureSize) {
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canvas->clear(SK_ColorWHITE);
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SkPaint paint;
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paint.setColor(SK_ColorGREEN);
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paint.setStyle(SkPaint::kFill_Style);
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paint.setAntiAlias(true);
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canvas->drawCircle(pictureSize / 4, pictureSize / 4, pictureSize / 4, paint);
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canvas->drawRect(SkRect::MakeXYWH(pictureSize / 2, pictureSize / 2,
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pictureSize / 2, pictureSize / 2), paint);
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paint.setColor(SK_ColorRED);
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canvas->drawLine(pictureSize / 2, pictureSize * 1 / 3,
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pictureSize / 2, pictureSize * 2 / 3, paint);
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canvas->drawLine(pictureSize * 1 / 3, pictureSize / 2,
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pictureSize * 2 / 3, pictureSize / 2, paint);
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paint.setColor(SK_ColorBLACK);
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paint.setStyle(SkPaint::kStroke_Style);
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canvas->drawRect(SkRect::MakeWH(pictureSize, pictureSize), paint);
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}
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SkAutoTUnref<SkShader> fShaders[SK_ARRAY_COUNT(tiles)];
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typedef GM INHERITED;
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};
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DEF_GM( return SkNEW(PictureShaderTileGM); )
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