xref: /aosp_15_r20/external/skia/docs/examples/Pixmap_addr_2.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
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(Pixmap_addr_2, 256, 256, true, 0) {
draw(SkCanvas * canvas)5 void draw(SkCanvas* canvas) {
6     const int w = 4;
7     const int h = 4;
8     std::vector<SkPMColor> storage;
9     storage.resize(w * h);
10     SkPixmap pixmap(SkImageInfo::MakeN32(w, h, kPremul_SkAlphaType), &storage.front(), w * 4);
11     SkDebugf("pixmap.addr(1, 2) %c= &storage[1 + 2 * w]\n",
12               pixmap.addr(1, 2)  == &storage[1 + 2 * w] ? '=' : '!');
13 }
14 }  // END FIDDLE
15