| 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=febdbfac6cf4cde69837643be2e1f6dd |
| Hal Canary | a7181e7c | 2019-03-18 16:06:34 -0400 | [diff] [blame] | 5 | REG_FIDDLE(Pixmap_extractSubset, 256, 128, false, 3) { |
| Hal Canary | 8751512 | 2019-03-15 14:22:51 -0400 | [diff] [blame] | 6 | void draw(SkCanvas* canvas) { |
| 7 | std::vector<int32_t> pixels; |
| 8 | pixels.resize(image->height() * image->width() * 4); |
| 9 | SkPixmap pixmap(SkImageInfo::Make(image->width(), image->height(), kN32_SkColorType, |
| 10 | image->alphaType()), (const void*) &pixels.front(), image->width() * 4); |
| Adlai Holler | bcfc554 | 2020-08-27 12:44:07 -0400 | [diff] [blame] | 11 | image->readPixels(nullptr, pixmap, 0, 0); |
| Hal Canary | 8751512 | 2019-03-15 14:22:51 -0400 | [diff] [blame] | 12 | SkPixmap inset; |
| 13 | if (pixmap.extractSubset(&inset, {128, 128, 512, 512})) { |
| 14 | SkBitmap bitmap; |
| 15 | bitmap.installPixels(inset); |
| Mike Reed | ecdd979 | 2021-01-27 20:39:22 -0500 | [diff] [blame] | 16 | canvas->drawImage(bitmap.asImage(), 0, 0); |
| Hal Canary | 8751512 | 2019-03-15 14:22:51 -0400 | [diff] [blame] | 17 | } |
| 18 | } |
| 19 | } // END FIDDLE |