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=086866243bf9e4c14c3b215a2aa69ad9
5cb93a386Sopenharmony_ciREG_FIDDLE(Pixmap_writable_addr32, 256, 72, false, 4) {
6cb93a386Sopenharmony_civoid draw(SkCanvas* canvas) {
7cb93a386Sopenharmony_ci    std::vector<int32_t> pixels;
8cb93a386Sopenharmony_ci    pixels.resize(image->height() * image->width() * 4);
9cb93a386Sopenharmony_ci    SkPixmap pixmap(SkImageInfo::Make(image->width(), image->height(), kN32_SkColorType,
10cb93a386Sopenharmony_ci            image->alphaType()), (const void*) &pixels.front(), image->width() * 4);
11cb93a386Sopenharmony_ci    image->readPixels(nullptr, pixmap, 0, 0);
12cb93a386Sopenharmony_ci    for (int y = 0; y < pixmap.height() / 2; ++y) {
13cb93a386Sopenharmony_ci        for (int x = 0; x < pixmap.width(); ++x) {
14cb93a386Sopenharmony_ci            if ((x & 4) == (y & 4)) {
15cb93a386Sopenharmony_ci                *pixmap.writable_addr32(x, y) =
16cb93a386Sopenharmony_ci                        *pixmap.writable_addr32(pixmap.width() - x - 1, pixmap.height() - y - 1);
17cb93a386Sopenharmony_ci            }
18cb93a386Sopenharmony_ci        }
19cb93a386Sopenharmony_ci    }
20cb93a386Sopenharmony_ci    SkBitmap bitmap;
21cb93a386Sopenharmony_ci    bitmap.installPixels(pixmap);
22cb93a386Sopenharmony_ci    canvas->drawImage(bitmap.asImage(), 0, 0);
23cb93a386Sopenharmony_ci}
24cb93a386Sopenharmony_ci}  // END FIDDLE
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