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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<SkSurface> make_surface(SkCanvas* canvas, const SkImageInfo& info) {
auto surface = canvas->makeSurface(info);
if (!surface) {
surface = SkSurface::MakeRaster(info);
}
return surface;
}
static sk_sp<SkImage> make_image(SkCanvas* canvas, int direction) {
SkImageInfo info = SkImageInfo::MakeN32Premul(250, 200);
auto surface = make_surface(canvas, info);
SkCanvas* c = surface->getCanvas();
SkPaint paint;
paint.setAntiAlias(true);
const SkColor colors[] = {
SK_ColorRED, SK_ColorBLUE, SK_ColorGREEN, SK_ColorYELLOW, SK_ColorBLACK
};
int width = 25;
bool xDirection = (direction & 0x1) == 1;
bool yDirection = (direction & 0x2) == 2;
if (xDirection) {
for (int x = 0; x < info.width(); x += width) {
paint.setColor(colors[x/width % 5]);
if (yDirection) {
paint.setAlpha(127);
}
c->drawRect(SkRect::MakeXYWH(x, 0, width, info.height()), paint);
}
}
if (yDirection) {
for (int y = 0; y < info.height(); y += width) {
paint.setColor(colors[y/width % 5]);
if (xDirection) {
paint.setAlpha(127);
}
c->drawRect(SkRect::MakeXYWH(0, y, info.width(), width), 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 a colorful grids with different blur settings.
class ImageBlurRepeatModeGM : public GM {
public:
ImageBlurRepeatModeGM() {
this->setBGColor(sk_tool_utils::color_to_565(0xFFCCCCCC));
}
protected:
SkString onShortName() override {
return SkString("imageblurrepeatmode");
}
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, 1), make_image(canvas, 2), make_image(canvas, 3) };
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();
sk_sp<SkImageFilter> filter(
SkBlurImageFilter::Make(sigma, 0.0f, nullptr, nullptr,
SkBlurImageFilter::kRepeat_TileMode));
draw_image(canvas, image[0], std::move(filter));
canvas->translate(image[0]->width() + 20, 0);
filter = SkBlurImageFilter::Make(0.0f, sigma, nullptr, nullptr,
SkBlurImageFilter::kRepeat_TileMode);
draw_image(canvas, image[1], std::move(filter));
canvas->translate(image[1]->width() + 20, 0);
filter = SkBlurImageFilter::Make(sigma, sigma, nullptr, nullptr,
SkBlurImageFilter::kRepeat_TileMode);
draw_image(canvas, image[2], std::move(filter));
canvas->translate(image[2]->width() + 20, 0);
canvas->restore();
canvas->translate(0, image[0]->height() + 20);
}
}
private:
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new ImageBlurRepeatModeGM;)
}
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