diff options
| -rw-r--r-- | gm/imageblurclampmode.cpp | 100 | ||||
| -rw-r--r-- | gn/gm.gni | 1 |
2 files changed, 101 insertions, 0 deletions
diff --git a/gm/imageblurclampmode.cpp b/gm/imageblurclampmode.cpp new file mode 100644 index 0000000000..0f97ef386e --- /dev/null +++ b/gm/imageblurclampmode.cpp @@ -0,0 +1,100 @@ +/* + * 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) { + SkImageInfo info = SkImageInfo::MakeN32Premul(250, 200); + auto surface = make_surface(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); + } + + void onDraw(SkCanvas* canvas) override { + sk_sp<SkImage> image(make_image(canvas)); + + 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)); + draw_image(canvas, image, std::move(filter)); + canvas->translate(image->width() + 20, 0); + + filter = SkBlurImageFilter::Make(0.0f, sigma, nullptr); + draw_image(canvas, image, std::move(filter)); + canvas->translate(image->width() + 20, 0); + + filter = SkBlurImageFilter::Make(sigma, sigma, nullptr); + 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;) +} @@ -160,6 +160,7 @@ gm_sources = [ "$_gm/imagealphathreshold.cpp", "$_gm/imageblur.cpp", "$_gm/imageblur2.cpp", + "$_gm/imageblurclampmode.cpp", "$_gm/imageblurtiled.cpp", "$_gm/imagefilters.cpp", "$_gm/imagefiltersbase.cpp", |