1 // Copyright 2019 Google LLC.
2 // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3 #include "tools/fiddle/examples.h"
4 REG_FIDDLE(Difference, 256, 256, false, 5) {
draw(SkCanvas * canvas)5 void draw(SkCanvas* canvas) {
6 canvas->drawImage(image, 0, 0);
7 canvas->drawImage(image, 128, 0);
8 canvas->drawImage(image, 0, 128);
9 canvas->drawImage(image, 128, 128);
10 SkPaint paint;
11 paint.setBlendMode(SkBlendMode::kDstATop);
12 SkColor alphas[] = { SK_ColorBLACK, SK_ColorTRANSPARENT };
13 SkPoint vert[] = { { 0, 0 }, { 0, 256 } };
14 paint.setShader(SkGradientShader::MakeLinear(vert, alphas, nullptr, std::size(alphas),
15 SkTileMode::kClamp));
16 canvas->drawPaint(paint);
17 canvas->clipRect( { 30, 30, 226, 226 } );
18 canvas->drawColor(0x80bb9977, SkBlendMode::kDifference);
19 }
20 } // END FIDDLE
21