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=9b3133a6673d2514d166398adbe1f9f4 |
Hal Canary | a7181e7c | 2019-03-18 16:06:34 -0400 | [diff] [blame] | 5 | REG_FIDDLE(Bitmap_writePixels, 256, 256, false, 3) { |
Hal Canary | 8751512 | 2019-03-15 14:22:51 -0400 | [diff] [blame] | 6 | void draw(SkCanvas* canvas) { |
| 7 | std::vector<int32_t> srcPixels; |
| 8 | int width = image->width(); |
| 9 | int height = image->height(); |
| 10 | srcPixels.resize(height * width * 4); |
| 11 | SkPixmap pixmap(SkImageInfo::MakeN32Premul(width, height), (const void*) &srcPixels.front(), |
| 12 | width * 4); |
| 13 | image->readPixels(pixmap, 0, 0); |
| 14 | canvas->scale(.5f, .5f); |
| 15 | width /= 4; |
| 16 | height /= 4; |
| 17 | for (int y = 0; y < 4; ++y) { |
| 18 | for (int x = 0; x < 4; ++x) { |
| 19 | SkBitmap bitmap; |
| 20 | bitmap.allocPixels(SkImageInfo::MakeN32Premul(width, height)); |
| 21 | bitmap.writePixels(pixmap, -y * width, -x * height); |
| 22 | canvas->drawBitmap(bitmap, x * width, y * height); |
| 23 | } |
| 24 | } |
| 25 | } |
| 26 | } // END FIDDLE |