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
5 #include <climits>
6 #include <random>
7
8 REG_FIDDLE(Bitmap_installPixels_2, 256, 256, false, 0) {
draw(SkCanvas * canvas)9 void draw(SkCanvas* canvas) {
10 std::default_random_engine rng;
11 const auto randUint = [&rng](uint32_t min, uint32_t max) -> uint32_t {
12 return std::uniform_int_distribution<uint32_t>(min, max)(rng);
13 };
14 SkBitmap bitmap;
15 const int width = 8;
16 const int height = 8;
17 uint32_t pixels[width * height];
18 for (unsigned x = 0; x < width * height; ++x) {
19 pixels[x] = randUint(0, UINT_MAX);
20 }
21 SkImageInfo info = SkImageInfo::MakeN32(width, height, kUnpremul_SkAlphaType);
22 if (bitmap.installPixels(info, pixels, info.minRowBytes())) {
23 canvas->scale(32, 32);
24 canvas->drawImage(bitmap.asImage(), 0, 0);
25 }
26 }
27 } // END FIDDLE
28