2019-03-15 18:22:51 +00:00
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// Copyright 2019 Google LLC.
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// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
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#include "fiddle/examples.h"
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// HASH=3fdac2b2f48bd227d2e74234c260bc8e
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2019-03-18 20:06:34 +00:00
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REG_FIDDLE(Modulate, 256, 256, false, 0) {
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2019-03-15 18:22:51 +00:00
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void draw(SkCanvas* canvas) {
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auto drawSquare = [=](int dx, int dy, SkBlendMode mode, const char* label) -> void {
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const SkColor colors[] = { SK_ColorBLACK, SK_ColorWHITE };
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const SkPoint horz[] = { { 0, 0 }, { 128, 0 } };
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SkPaint paint;
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paint.setShader(SkGradientShader::MakeLinear(horz, colors, nullptr, SK_ARRAY_COUNT(colors),
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SkShader::kClamp_TileMode));
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paint.setBlendMode(mode);
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canvas->translate(dx, dy);
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canvas->drawRect({0, 0, 128, 128}, paint);
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paint.setBlendMode(SkBlendMode::kXor);
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SkFont font;
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canvas->drawString(label, 40, 100, font, paint);
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};
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drawSquare(0, 0, SkBlendMode::kSrc, "destination");
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drawSquare(128, 0, SkBlendMode::kSrc, "");
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drawSquare(0, 128, SkBlendMode::kSrc, "");
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canvas->translate(-128, -128);
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canvas->rotate(90, 0, 128);
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drawSquare(0, 0, SkBlendMode::kSrc, "source");
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drawSquare(0, -128, SkBlendMode::kModulate, "modulate");
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drawSquare(-128, 0, SkBlendMode::kMultiply, "multiply");
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}
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} // END FIDDLE
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