| 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=6ec7f7b2cc163cd29f627eef6d4b061c |
| Hal Canary | a7181e7c | 2019-03-18 16:06:34 -0400 | [diff] [blame] | 5 | REG_FIDDLE(Pixmap_readPixels_3, 256, 256, false, 3) { |
| Hal Canary | 8751512 | 2019-03-15 14:22:51 -0400 | [diff] [blame] | 6 | void draw(SkCanvas* canvas) { |
| 7 | SkImageInfo info = SkImageInfo::MakeN32Premul(image->width(), image->height()); |
| 8 | std::vector<int32_t> srcPixels; |
| 9 | const int rowBytes = image->width() * 4; |
| 10 | srcPixels.resize(image->height() * rowBytes); |
| 11 | SkPixmap pixmap(info, (const void*) &srcPixels.front(), rowBytes); |
| 12 | image->readPixels(pixmap, 0, 0); |
| 13 | for (int offset : { 32, 64, 96 } ) { |
| 14 | std::vector<int32_t> dstPixels; |
| 15 | dstPixels.resize(image->height() * rowBytes); |
| 16 | SkPixmap dstmap(info, &dstPixels.front(), rowBytes); |
| 17 | pixmap.readPixels(dstmap, offset, 0); |
| 18 | SkBitmap bitmap; |
| 19 | bitmap.installPixels(dstmap); |
| 20 | canvas->translate(32, 32); |
| 21 | canvas->drawBitmap(bitmap, 0, 0); |
| 22 | } |
| 23 | } |
| 24 | } // END FIDDLE |