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