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/*
* 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"
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.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:
SkString onShortName() override {
return SkString("pictureshadertile");
}
SkISize onISize() 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 < 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));
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] = SkShader::MakePictureShader(pictureRef, SkShader::kRepeat_TileMode,
SkShader::kRepeat_TileMode, &localMatrix,
tilePtr);
}
}
void onDraw(SkCanvas* canvas) 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:
sk_sp<SkShader> fShaders[SK_ARRAY_COUNT(tiles)];
typedef GM INHERITED;
};
DEF_GM(return new PictureShaderTileGM;)
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