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/*
* Copyright 2017 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 "sk_tool_utils.h"
#include "SkSurface.h"
#include "SkBlurImageFilter.h"
static sk_sp<SkImage> make_image(SkCanvas* canvas) {
SkImageInfo info = SkImageInfo::MakeN32Premul(250, 200);
auto surface = sk_tool_utils::makeSurface(canvas, info);
SkCanvas* c = surface->getCanvas();
SkPaint paint;
paint.setAntiAlias(true);
paint.setColor(SK_ColorBLUE);
c->drawRect(SkRect::MakeIWH(info.width(), info.height()), paint);
paint.setColor(SK_ColorGREEN);
c->drawCircle(125, 100, 100, paint);
paint.setColor(SK_ColorRED);
c->drawRect(SkRect::MakeIWH(80, 80), paint);
return surface->makeImageSnapshot();
}
static void draw_image(SkCanvas* canvas, const sk_sp<SkImage> image, sk_sp<SkImageFilter> filter) {
SkAutoCanvasRestore acr(canvas, true);
SkPaint paint;
paint.setImageFilter(std::move(filter));
canvas->translate(SkIntToScalar(30), 0);
canvas->clipRect(SkRect::MakeIWH(image->width(),image->height()));
canvas->drawImage(image, 0, 0, &paint);
}
namespace skiagm {
// This GM draws one rectangle, one green inscribed circle, and one red square
// with different blur settings.
class ImageBlurClampModeGM : public GM {
public:
ImageBlurClampModeGM() {
this->setBGColor(sk_tool_utils::color_to_565(0xFFCCCCCC));
}
protected:
SkString onShortName() override {
return SkString("imageblurclampmode");
}
SkISize onISize() override {
return SkISize::Make(850, 920);
}
bool runAsBench() const override { return true; }
void onDraw(SkCanvas* canvas) override {
sk_sp<SkImage> image(make_image(canvas));
sk_sp<SkImageFilter> filter;
canvas->translate(0, 30);
// Test different kernel size, including the one to launch 2d Gaussian
// blur.
for (auto sigma: { 0.6f, 3.0f, 8.0f, 20.0f }) {
canvas->save();
// x-only blur
filter = SkBlurImageFilter::Make(sigma, 0.0f, nullptr, nullptr,
SkBlurImageFilter::kClamp_TileMode);
draw_image(canvas, image, std::move(filter));
canvas->translate(image->width() + 20, 0);
// y-only blur
filter = SkBlurImageFilter::Make(0.0f, sigma, nullptr, nullptr,
SkBlurImageFilter::kClamp_TileMode);
draw_image(canvas, image, std::move(filter));
canvas->translate(image->width() + 20, 0);
// both directions
filter = SkBlurImageFilter::Make(sigma, sigma, nullptr, nullptr,
SkBlurImageFilter::kClamp_TileMode);
draw_image(canvas, image, std::move(filter));
canvas->translate(image->width() + 20, 0);
canvas->restore();
canvas->translate(0, image->height() + 20);
}
}
private:
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new ImageBlurClampModeGM;)
}
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