1*c8dee2aaSAndroid Build Coastguard Worker // Copyright 2019 Google LLC.
2*c8dee2aaSAndroid Build Coastguard Worker // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3*c8dee2aaSAndroid Build Coastguard Worker #include "tools/fiddle/examples.h"
4*c8dee2aaSAndroid Build Coastguard Worker REG_FIDDLE(Pixmap_readPixels_2, 256, 256, false, 3) {
draw(SkCanvas * canvas)5*c8dee2aaSAndroid Build Coastguard Worker void draw(SkCanvas* canvas) {
6*c8dee2aaSAndroid Build Coastguard Worker SkImageInfo info = SkImageInfo::MakeN32Premul(image->width(), image->height());
7*c8dee2aaSAndroid Build Coastguard Worker std::vector<int32_t> srcPixels;
8*c8dee2aaSAndroid Build Coastguard Worker const int rowBytes = image->width() * 4;
9*c8dee2aaSAndroid Build Coastguard Worker srcPixels.resize(image->height() * rowBytes);
10*c8dee2aaSAndroid Build Coastguard Worker SkPixmap pixmap(info, (const void*) &srcPixels.front(), rowBytes);
11*c8dee2aaSAndroid Build Coastguard Worker image->readPixels(nullptr, pixmap, 0, 0);
12*c8dee2aaSAndroid Build Coastguard Worker for (int offset : { 32, 64, 96 } ) {
13*c8dee2aaSAndroid Build Coastguard Worker std::vector<int32_t> dstPixels;
14*c8dee2aaSAndroid Build Coastguard Worker dstPixels.resize(image->height() * rowBytes);
15*c8dee2aaSAndroid Build Coastguard Worker pixmap.readPixels(info, &dstPixels.front(), rowBytes, offset, 0);
16*c8dee2aaSAndroid Build Coastguard Worker SkBitmap bitmap;
17*c8dee2aaSAndroid Build Coastguard Worker SkPixmap dstmap(info, &dstPixels.front(), rowBytes);
18*c8dee2aaSAndroid Build Coastguard Worker bitmap.installPixels(dstmap);
19*c8dee2aaSAndroid Build Coastguard Worker canvas->translate(32, 32);
20*c8dee2aaSAndroid Build Coastguard Worker canvas->drawImage(bitmap.asImage(), 0, 0);
21*c8dee2aaSAndroid Build Coastguard Worker }
22*c8dee2aaSAndroid Build Coastguard Worker }
23*c8dee2aaSAndroid Build Coastguard Worker } // END FIDDLE
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