166 lines
5.8 KiB
C++
166 lines
5.8 KiB
C++
/*
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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/gm.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkMatrix.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkPicture.h"
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#include "include/core/SkPictureRecorder.h"
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#include "include/core/SkPoint.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkShader.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/core/SkTileMode.h"
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#include "include/core/SkTypes.h"
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constexpr SkScalar kPictureSize = SK_Scalar1;
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constexpr SkScalar kFillSize = 100;
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constexpr unsigned kRowSize = 6;
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constexpr 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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static void draw_scene(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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class PictureShaderTileGM : public skiagm::GM {
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protected:
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SkString onShortName() override {
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return SkString("pictureshadertile");
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}
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SkISize onISize() override {
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return SkISize::Make(800, 600);
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}
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void onOnceBeforeDraw() override {
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SkPictureRecorder recorder;
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SkCanvas* pictureCanvas = recorder.beginRecording(kPictureSize, kPictureSize);
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draw_scene(pictureCanvas, kPictureSize);
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sk_sp<SkPicture> picture(recorder.finishRecordingAsPicture());
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SkPoint offset = SkPoint::Make(100, 100);
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pictureCanvas = recorder.beginRecording(SkRect::MakeXYWH(offset.x(), offset.y(),
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kPictureSize, kPictureSize));
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pictureCanvas->translate(offset.x(), offset.y());
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draw_scene(pictureCanvas, kPictureSize);
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sk_sp<SkPicture> offsetPicture(recorder.finishRecordingAsPicture());
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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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sk_sp<SkPicture> pictureRef = picture;
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SkRect* tilePtr = &tile;
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if (tile == SkRect::MakeWH(kPictureSize, kPictureSize)) {
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// When the tile == picture bounds, exercise the picture + offset path.
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pictureRef = offsetPicture;
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tilePtr = nullptr;
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}
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fShaders[i] = pictureRef->makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat,
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SkFilterMode::kNearest, &localMatrix, tilePtr);
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}
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}
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void onDraw(SkCanvas* canvas) 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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sk_sp<SkShader> fShaders[SK_ARRAY_COUNT(tiles)];
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using INHERITED = GM;
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};
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DEF_GM(return new PictureShaderTileGM;)
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