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=32d51e959d6cc720a74ec4822511e2cd
5REG_FIDDLE(Region_Iterator_rewind, 256, 256, true, 0) {
6void draw(SkCanvas* canvas) {
7    auto debugster = [](const char* label, SkRegion::Iterator& iter, bool addRewind) -> void {
8        if (addRewind) {
9            bool success = iter.rewind();
10            SkDebugf("%14s rewind success=%s\n", label, success ? "true" : "false");
11        }
12        auto r = iter.rect();
13        SkDebugf("%14s rect={%d,%d,%d,%d}\n", label, r.fLeft, r.fTop, r.fRight, r.fBottom);
14    };
15    SkRegion::Iterator iter;
16    debugster("empty iter", iter, true);
17    SkRegion region;
18    iter.reset(region);
19    debugster("empty region", iter, true);
20    region.setRect({1, 2, 3, 4});
21    iter.reset(region);
22    debugster("after set rect", iter, false);
23    debugster("after rewind", iter, true);
24}
25}  // END FIDDLE
26