// Copyright 2020 Google LLC. // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file. #include "tools/fiddle/examples.h" REG_FIDDLE_SRGB(50_percent_gray, 530, 150, false, 0, 0, false) { static sk_sp<SkShader> make_bw_dither() { auto surf = SkSurface::MakeRasterN32Premul(2, 2); surf->getCanvas()->drawColor(SK_ColorWHITE); surf->getCanvas()->drawRect({0, 0, 1, 1}, SkPaint()); surf->getCanvas()->drawRect({1, 1, 2, 2}, SkPaint()); return surf->makeImageSnapshot()->makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat); } void draw(SkCanvas* canvas) { canvas->drawColor(SK_ColorWHITE); SkFont font(nullptr, 12); // BW Dither canvas->translate(5, 5); SkPaint p; p.setShader(make_bw_dither()); canvas->drawRect({0, 0, 100, 100}, p); SkPaint black; canvas->drawString("BW Dither", 0, 125, font, black); // Scaled BW Dither canvas->translate(105, 0); p.setFilterQuality(kLow_SkFilterQuality); canvas->save(); canvas->scale(0.5, 0.5); canvas->drawRect({0, 0, 200, 200}, p); canvas->restore(); canvas->drawString("Scaled Dither", 0, 125, font, black); // Blend black on to white canvas->translate(105, 0); p.setColor(0x80000000); p.setShader(nullptr); canvas->drawRect({0, 0, 100, 100}, p); p.setShader(nullptr); drawString(canvas,"Blend", 0, 125, font, black); // Opaque color (0xFFBCBCBC) canvas->translate(105, 0); p.setColor(0xFFBCBCBC); canvas->drawRect({0, 0, 100, 100}, p); canvas->drawString("0xFFBCBCBC", 0, 125, font, black); // Opaque color (0xFF808080) canvas->translate(105, 0); p.setColor(0xFF808080); canvas->drawRect({0, 0, 100, 100}, p); canvas->drawString("0xFF808080", 0, 125, font, black); } } // END FIDDLE