| Hal Canary | 8751512 | 2019-03-15 14:22:51 -0400 | [diff] [blame] | 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. |
| Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 3 | #include "tools/fiddle/examples.h" |
| Hal Canary | 8751512 | 2019-03-15 14:22:51 -0400 | [diff] [blame] | 4 | // HASH=94ad244056dc80ecd87daae004266334 |
| Hal Canary | a7181e7c | 2019-03-18 16:06:34 -0400 | [diff] [blame] | 5 | REG_FIDDLE(Pixmap_getColor, 256, 256, true, 0) { |
| Hal Canary | 8751512 | 2019-03-15 14:22:51 -0400 | [diff] [blame] | 6 | void draw(SkCanvas* canvas) { |
| 7 | const int w = 4; |
| 8 | const int h = 4; |
| 9 | std::vector<SkPMColor> storage; |
| 10 | storage.resize(w * h); |
| 11 | SkDebugf("Premultiplied:\n"); |
| 12 | for (int y = 0; y < h; ++y) { |
| 13 | SkDebugf("(0, %d) ", y); |
| 14 | for (int x = 0; x < w; ++x) { |
| 15 | int a = 0xFF * (x + y) / (w - 1 + h - 1); |
| 16 | storage[x + y * w] = SkPackARGB32(a, a * x / (w - 1), a * y / (h - 1), a); |
| 17 | SkDebugf("0x%08x%c", storage[x + y * w], x == w - 1 ? '\n' : ' '); |
| 18 | } |
| 19 | } |
| 20 | SkPixmap pixmap(SkImageInfo::MakeN32(w, h, kPremul_SkAlphaType), &storage.front(), w * 4); |
| 21 | SkDebugf("Unpremultiplied:\n"); |
| 22 | for (int y = 0; y < h; ++y) { |
| 23 | SkDebugf("(0, %d) ", y); |
| 24 | for (int x = 0; x < w; ++x) { |
| 25 | SkDebugf("0x%08x%c", pixmap.getColor(x, y), x == w - 1 ? '\n' : ' '); |
| 26 | } |
| 27 | } |
| 28 | } |
| 29 | } // END FIDDLE |