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