blob: 845b09d0654dff0ca9824ef2c1bcfb98256ef45f [file] [log] [blame]
// 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 = SkSurfaces::Raster(SkImageInfo::MakeN32Premul(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,
SkSamplingOptions(SkFilterMode::kLinear));
}
void draw(SkCanvas* canvas) {
canvas->drawColor(SK_ColorWHITE);
SkFont font(fontMgr->matchFamilyStyle(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);
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);
canvas->drawString("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