1*c8dee2aaSAndroid Build Coastguard Worker // Copyright 2019 Google LLC.
2*c8dee2aaSAndroid Build Coastguard Worker // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3*c8dee2aaSAndroid Build Coastguard Worker #include "tools/fiddle/examples.h"
4*c8dee2aaSAndroid Build Coastguard Worker REG_FIDDLE(Canvas_writePixels, 256, 256, false, 0) {
draw(SkCanvas * canvas)5*c8dee2aaSAndroid Build Coastguard Worker void draw(SkCanvas* canvas) {
6*c8dee2aaSAndroid Build Coastguard Worker SkImageInfo imageInfo = SkImageInfo::MakeN32(256, 1, kPremul_SkAlphaType);
7*c8dee2aaSAndroid Build Coastguard Worker for (int y = 0; y < 256; ++y) {
8*c8dee2aaSAndroid Build Coastguard Worker uint32_t pixels[256];
9*c8dee2aaSAndroid Build Coastguard Worker for (int x = 0; x < 256; ++x) {
10*c8dee2aaSAndroid Build Coastguard Worker pixels[x] = SkColorSetARGB(x, (x + y) % 256, x, (x - y) & 0xFF);
11*c8dee2aaSAndroid Build Coastguard Worker }
12*c8dee2aaSAndroid Build Coastguard Worker canvas->writePixels(imageInfo, &pixels, sizeof(pixels), 0, y);
13*c8dee2aaSAndroid Build Coastguard Worker }
14*c8dee2aaSAndroid Build Coastguard Worker }
15*c8dee2aaSAndroid Build Coastguard Worker } // END FIDDLE
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