| Hal Canary | 6c8422c | 2020-01-10 15:22:09 -0500 | [diff] [blame] | 1 | // Copyright 2020 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(subset_example, 512, 512, false, 3) { |
| 5 | void draw(SkCanvas* canvas) { |
| 6 | canvas->drawColor(SK_ColorWHITE); |
| 7 | const int N = 8; |
| 8 | int shuffle[N * N]; |
| 9 | for (int i = 0; i < (N * N); ++i) { |
| 10 | shuffle[i] = i; |
| 11 | } |
| 12 | srand(0); |
| 13 | for (int i = 0; i < (N * N); ++i) { |
| 14 | std::swap(shuffle[i], shuffle[rand() % (N * N - i) + i]); |
| 15 | } |
| 16 | int w = (source.width() - 1) / N + 1; |
| 17 | int h = (source.height() - 1) / N + 1; |
| 18 | for (int i = 0; i < N; ++i) { |
| 19 | for (int j = 0; j < N; ++j) { |
| 20 | int x = shuffle[(N * i) + j] % N; |
| 21 | int y = shuffle[(N * i) + j] / N; |
| 22 | SkBitmap subset; |
| 23 | source.extractSubset(&subset, SkIRect::MakeXYWH(w * x, h * y, w, h)); |
| 24 | canvas->drawBitmap(subset, w * i, h * j); |
| 25 | } |
| 26 | } |
| 27 | } |
| 28 | } // END FIDDLE |