| 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=e9f70cbc9827097449a386ec7a8a8188 |
| Hal Canary | a7181e7c | 2019-03-18 16:06:34 -0400 | [diff] [blame] | 5 | REG_FIDDLE(Bitmap_readPixels_2, 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 | srcPixels.resize(source.height() * source.rowBytes()); |
| 9 | for (int y = 0; y < 4; ++y) { |
| 10 | for (int x = 0; x < 4; ++x) { |
| 11 | SkPixmap pixmap(SkImageInfo::MakeN32Premul(source.width() / 4, source.height() / 4), |
| 12 | &srcPixels.front() + x * source.height() * source.width() / 4 + |
| 13 | y * source.width() / 4, source.rowBytes()); |
| 14 | source.readPixels(pixmap, x * source.width() / 4, y * source.height() / 4); |
| 15 | } |
| 16 | } |
| 17 | canvas->scale(.5f, .5f); |
| 18 | SkBitmap bitmap; |
| 19 | bitmap.installPixels(SkImageInfo::MakeN32Premul(source.width(), source.height()), |
| 20 | &srcPixels.front(), source.rowBytes()); |
| 21 | canvas->drawBitmap(bitmap, 0, 0); |
| 22 | } |
| 23 | } // END FIDDLE |