blob: eb11f9ac23e59c2bf9c52d50b2e899b2e4a79c51 [file] [log] [blame]
// 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, std::size(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