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 "tools/fiddle/examples.h"
4// HASH=8aa8ca63dff4641dfc6ea8a3c555d59c
5REG_FIDDLE(Image_readPixels, 256, 256, false, 3) {
6void draw(SkCanvas* canvas) {
7    canvas->scale(.5f, .5f);
8    const int width = 32;
9    const int height = 32;
10    std::vector<int32_t> dstPixels;
11    dstPixels.resize(height * width * 4);
12    SkImageInfo info = SkImageInfo::MakeN32Premul(width, height);
13    for (int y = 0; y < 512; y += height ) {
14        for (int x = 0; x < 512; x += width ) {
15            if (image->readPixels(nullptr, info, &dstPixels.front(), width * 4, x, y)) {
16                SkPixmap dstPixmap(info, &dstPixels.front(), width * 4);
17                SkBitmap bitmap;
18                bitmap.installPixels(dstPixmap);
19                canvas->drawImage(bitmap.asImage(), 0, 0);
20            }
21            canvas->translate(48, 0);
22        }
23        canvas->translate(-16 * 48, 48);
24    }
25}
26}  // END FIDDLE
27