1/*
2 * Copyright (c) 2021 - 2023 the ThorVG project. All rights reserved.
3
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10
11 * The above copyright notice and this permission notice shall be included in all
12 * copies or substantial portions of the Software.
13
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23#include "tvgIteratorAccessor.h"
24
25/************************************************************************/
26/* Internal Class Implementation */
27/************************************************************************/
28
29static bool accessChildren(Iterator* it, function<bool(const Paint* paint)> func)
30{
31 while (auto child = it->next()) {
32 //Access the child
33 if (!func(child)) return false;
34
35 //Access the children of the child
36 if (auto it2 = IteratorAccessor::iterator(child)) {
37 if (!accessChildren(it2, func)) {
38 delete(it2);
39 return false;
40 }
41 delete(it2);
42 }
43 }
44 return true;
45}
46
47/************************************************************************/
48/* External Class Implementation */
49/************************************************************************/
50
51unique_ptr<Picture> Accessor::set(unique_ptr<Picture> picture, function<bool(const Paint* paint)> func) noexcept
52{
53 auto p = picture.get();
54 if (!p || !func) return picture;
55
56 //Use the Preorder Tree-Search
57
58 //Root
59 if (!func(p)) return picture;
60
61 //Children
62 if (auto it = IteratorAccessor::iterator(p)) {
63 accessChildren(it, func);
64 delete(it);
65 }
66 return picture;
67}
68
69
70Accessor::~Accessor()
71{
72
73}
74
75
76Accessor::Accessor() : pImpl(nullptr)
77{
78
79}
80
81
82unique_ptr<Accessor> Accessor::gen() noexcept
83{
84 return unique_ptr<Accessor>(new Accessor);
85}
86