/* * 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/gm.h" #include "include/core/SkCanvas.h" #include "include/core/SkColor.h" #include "include/core/SkImage.h" #include "include/core/SkImageFilter.h" #include "include/core/SkImageInfo.h" #include "include/core/SkPaint.h" #include "include/core/SkRect.h" #include "include/core/SkRefCnt.h" #include "include/core/SkScalar.h" #include "include/core/SkSize.h" #include "include/core/SkString.h" #include "include/core/SkSurface.h" #include "include/effects/SkImageFilters.h" #include "tools/ToolUtils.h" #include <initializer_list> #include <utility> static sk_sp<SkImage> make_image(SkCanvas* canvas) { SkImageInfo info = SkImageInfo::MakeN32Premul(250, 200); auto surface = ToolUtils::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(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 = SkImageFilters::Blur(sigma, 0.0f, SkTileMode::kClamp, nullptr); draw_image(canvas, image, std::move(filter)); canvas->translate(image->width() + 20, 0); // y-only blur filter = SkImageFilters::Blur(0.0f, sigma, SkTileMode::kClamp, nullptr); draw_image(canvas, image, std::move(filter)); canvas->translate(image->width() + 20, 0); // both directions filter = SkImageFilters::Blur(sigma, sigma, SkTileMode::kClamp, nullptr); draw_image(canvas, image, std::move(filter)); canvas->translate(image->width() + 20, 0); canvas->restore(); canvas->translate(0, image->height() + 20); } } private: using INHERITED = GM; }; ////////////////////////////////////////////////////////////////////////////// DEF_GM(return new ImageBlurClampModeGM;) } // namespace skiagm