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=e18549b5ee1039cb61b0bb38c2104fc9
5 REG_FIDDLE(Pixmap_readPixels_4, 256, 256, false, 3) {
draw(SkCanvas * canvas)6 void draw(SkCanvas* canvas) {
7 SkImageInfo info = SkImageInfo::MakeN32Premul(image->width(), image->height());
8 std::vector<int32_t> srcPixels;
9 const int rowBytes = image->width() * 4;
10 srcPixels.resize(image->height() * rowBytes);
11 SkPixmap pixmap(info, (const void*) &srcPixels.front(), rowBytes);
12 image->readPixels(nullptr, pixmap, 0, 0);
13 for (int index = 0; index < 3; ++index ) {
14 std::vector<int32_t> dstPixels;
15 dstPixels.resize(image->height() * rowBytes);
16 SkPixmap dstmap(info, &dstPixels.front(), rowBytes);
17 pixmap.readPixels(dstmap);
18 SkBitmap bitmap;
19 bitmap.installPixels(dstmap);
20 canvas->translate(32, 32);
21 canvas->drawImage(bitmap.asImage(), 0, 0);
22 }
23 }
24 } // END FIDDLE
25