| Hal Canary | 83c2f70 | 2019-03-07 14:53:03 -0500 | [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. |
| 3 | #include "fiddle/examples.h" |
| 4 | // HASH=b77a73c4baa63a4a8e2a4fdd96144d0b |
| 5 | REG_FIDDLE(Image_030, 256, 256, false, 3) { |
| 6 | void draw(SkCanvas* canvas) { |
| 7 | std::vector<int32_t> srcPixels; |
| 8 | int rowBytes = image->width() * 4; |
| 9 | int quarterWidth = image->width() / 4; |
| 10 | int quarterHeight = image->height() / 4; |
| 11 | srcPixels.resize(image->height() * rowBytes); |
| 12 | for (int y = 0; y < 4; ++y) { |
| 13 | for (int x = 0; x < 4; ++x) { |
| 14 | SkPixmap pixmap(SkImageInfo::MakeN32Premul(quarterWidth, quarterHeight), |
| 15 | &srcPixels.front() + x * image->height() * quarterWidth + |
| 16 | y * quarterWidth, rowBytes); |
| 17 | image->readPixels(pixmap, x * quarterWidth, y * quarterHeight); |
| 18 | } |
| 19 | } |
| 20 | canvas->scale(.5f, .5f); |
| 21 | SkBitmap bitmap; |
| 22 | bitmap.installPixels(SkImageInfo::MakeN32Premul(image->width(), image->height()), |
| 23 | &srcPixels.front(), rowBytes); |
| 24 | canvas->drawBitmap(bitmap, 0, 0); |
| 25 | } |
| 26 | } // END FIDDLE |