1cb93a386Sopenharmony_ci// Copyright 2019 Google LLC. 2cb93a386Sopenharmony_ci// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file. 3cb93a386Sopenharmony_ci#include "tools/fiddle/examples.h" 4cb93a386Sopenharmony_ci// HASH=9b3133a6673d2514d166398adbe1f9f4 5cb93a386Sopenharmony_ciREG_FIDDLE(Bitmap_writePixels, 256, 256, false, 3) { 6cb93a386Sopenharmony_civoid draw(SkCanvas* canvas) { 7cb93a386Sopenharmony_ci std::vector<int32_t> srcPixels; 8cb93a386Sopenharmony_ci int width = image->width(); 9cb93a386Sopenharmony_ci int height = image->height(); 10cb93a386Sopenharmony_ci srcPixels.resize(height * width * 4); 11cb93a386Sopenharmony_ci SkPixmap pixmap(SkImageInfo::MakeN32Premul(width, height), (const void*) &srcPixels.front(), 12cb93a386Sopenharmony_ci width * 4); 13cb93a386Sopenharmony_ci image->readPixels(nullptr, pixmap, 0, 0); 14cb93a386Sopenharmony_ci canvas->scale(.5f, .5f); 15cb93a386Sopenharmony_ci width /= 4; 16cb93a386Sopenharmony_ci height /= 4; 17cb93a386Sopenharmony_ci for (int y = 0; y < 4; ++y) { 18cb93a386Sopenharmony_ci for (int x = 0; x < 4; ++x) { 19cb93a386Sopenharmony_ci SkBitmap bitmap; 20cb93a386Sopenharmony_ci bitmap.allocPixels(SkImageInfo::MakeN32Premul(width, height)); 21cb93a386Sopenharmony_ci bitmap.writePixels(pixmap, -y * width, -x * height); 22cb93a386Sopenharmony_ci canvas->drawImage(bitmap.asImage(), x * width, y * height); 23cb93a386Sopenharmony_ci } 24cb93a386Sopenharmony_ci } 25cb93a386Sopenharmony_ci} 26cb93a386Sopenharmony_ci} // END FIDDLE 27