/* * 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, int direction) { SkImageInfo info = SkImageInfo::MakeN32Premul(250, 200); auto surface = ToolUtils::makeSurface(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.setAlphaf(0.5f); } 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.setAlphaf(0.5f); } 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(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( SkImageFilters::Blur(sigma, 0.0f, SkTileMode::kRepeat, nullptr)); draw_image(canvas, image[0], std::move(filter)); canvas->translate(image[0]->width() + 20, 0); filter = SkImageFilters::Blur(0.0f, sigma, SkTileMode::kRepeat, nullptr); draw_image(canvas, image[1], std::move(filter)); canvas->translate(image[1]->width() + 20, 0); filter = SkImageFilters::Blur(sigma, sigma, SkTileMode::kRepeat, nullptr); 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;) }