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/*
* Copyright 2016 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 "SkBlurImageFilter.h"
#include "SkRRect.h"
#include "SkSurface.h"
#include "SkClipOpPriv.h"
#define WIDTH 512
#define HEIGHT 512
namespace skiagm {
class ComplexClipBlurTiledGM : public GM {
public:
ComplexClipBlurTiledGM() {
}
protected:
SkString onShortName() override {
return SkString("complexclip_blur_tiled");
}
SkISize onISize() override {
return SkISize::Make(WIDTH, HEIGHT);
}
void onDraw(SkCanvas* canvas) override {
SkPaint blurPaint;
blurPaint.setImageFilter(SkBlurImageFilter::Make(5.0f, 5.0f, nullptr));
const SkScalar tileSize = SkIntToScalar(128);
SkRect bounds = canvas->getLocalClipBounds();
int ts = SkScalarCeilToInt(tileSize);
SkImageInfo info = SkImageInfo::MakeN32Premul(ts, ts);
auto tileSurface(canvas->makeSurface(info));
if (!tileSurface) {
tileSurface = SkSurface::MakeRaster(info);
}
SkCanvas* tileCanvas = tileSurface->getCanvas();
for (SkScalar y = bounds.top(); y < bounds.bottom(); y += tileSize) {
for (SkScalar x = bounds.left(); x < bounds.right(); x += tileSize) {
tileCanvas->save();
tileCanvas->clear(0);
tileCanvas->translate(-x, -y);
SkRect rect = SkRect::MakeWH(WIDTH, HEIGHT);
tileCanvas->saveLayer(&rect, &blurPaint);
SkRRect rrect = SkRRect::MakeRectXY(rect.makeInset(20, 20), 25, 25);
tileCanvas->clipRRect(rrect, kDifference_SkClipOp, true);
SkPaint paint;
tileCanvas->drawRect(rect, paint);
tileCanvas->restore();
tileCanvas->restore();
canvas->drawImage(tileSurface->makeImageSnapshot().get(), x, y);
}
}
}
private:
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new ComplexClipBlurTiledGM;)
}
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