9d9312b308
Change-Id: I606eb7dfbce04147bfc6e287bb2c75051a44a076 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/264692 Commit-Queue: Joe Gregorio <jcgregorio@google.com> Reviewed-by: Joe Gregorio <jcgregorio@google.com>
56 lines
1.8 KiB
C++
56 lines
1.8 KiB
C++
// Copyright 2020 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 "tools/fiddle/examples.h"
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REG_FIDDLE_SRGB(50_percent_gray, 530, 150, false, 0, 0, false) {
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static sk_sp<SkShader> make_bw_dither() {
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auto surf = SkSurface::MakeRasterN32Premul(2, 2);
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surf->getCanvas()->drawColor(SK_ColorWHITE);
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surf->getCanvas()->drawRect({0, 0, 1, 1}, SkPaint());
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surf->getCanvas()->drawRect({1, 1, 2, 2}, SkPaint());
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return surf->makeImageSnapshot()->makeShader(SkTileMode::kRepeat,
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SkTileMode::kRepeat);
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}
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void draw(SkCanvas* canvas) {
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canvas->drawColor(SK_ColorWHITE);
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SkFont font(nullptr, 12);
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// BW Dither
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canvas->translate(5, 5);
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SkPaint p;
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p.setShader(make_bw_dither());
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canvas->drawRect({0, 0, 100, 100}, p);
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SkPaint black;
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canvas->drawString("BW Dither", 0, 125, font, black);
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// Scaled BW Dither
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canvas->translate(105, 0);
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p.setFilterQuality(kLow_SkFilterQuality);
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canvas->save();
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canvas->scale(0.5, 0.5);
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canvas->drawRect({0, 0, 200, 200}, p);
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canvas->restore();
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canvas->drawString("Scaled Dither", 0, 125, font, black);
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// Blend black on to white
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canvas->translate(105, 0);
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p.setColor(0x80000000);
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p.setShader(nullptr);
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canvas->drawRect({0, 0, 100, 100}, p);
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p.setShader(nullptr);
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drawString(canvas,"Blend", 0, 125, font, black);
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// Opaque color (0xFFBCBCBC)
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canvas->translate(105, 0);
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p.setColor(0xFFBCBCBC);
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canvas->drawRect({0, 0, 100, 100}, p);
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canvas->drawString("0xFFBCBCBC", 0, 125, font, black);
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// Opaque color (0xFF808080)
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canvas->translate(105, 0);
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p.setColor(0xFF808080);
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canvas->drawRect({0, 0, 100, 100}, p);
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canvas->drawString("0xFF808080", 0, 125, font, black);
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}
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} // END FIDDLE
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