// Copyright 2019 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" // HASH=3fdac2b2f48bd227d2e74234c260bc8e REG_FIDDLE(Modulate, 256, 256, false, 0) { void draw(SkCanvas* canvas) { auto drawSquare = [=](int dx, int dy, SkBlendMode mode, const char* label) -> void { const SkColor colors[] = { SK_ColorBLACK, SK_ColorWHITE }; const SkPoint horz[] = { { 0, 0 }, { 128, 0 } }; SkPaint paint; paint.setShader(SkGradientShader::MakeLinear(horz, colors, nullptr, SK_ARRAY_COUNT(colors), SkTileMode::kClamp)); paint.setBlendMode(mode); canvas->translate(dx, dy); canvas->drawRect({0, 0, 128, 128}, paint); paint.setBlendMode(SkBlendMode::kXor); SkFont font; canvas->drawString(label, 40, 100, font, paint); }; drawSquare(0, 0, SkBlendMode::kSrc, "destination"); drawSquare(128, 0, SkBlendMode::kSrc, ""); drawSquare(0, 128, SkBlendMode::kSrc, ""); canvas->translate(-128, -128); canvas->rotate(90, 0, 128); drawSquare(0, 0, SkBlendMode::kSrc, "source"); drawSquare(0, -128, SkBlendMode::kModulate, "modulate"); drawSquare(-128, 0, SkBlendMode::kMultiply, "multiply"); } } // END FIDDLE