1 | /*************************************************************************** |
2 | * Copyright (C) 1999-2006 by Éric Bischoff <ebischoff@nerim.net> * |
3 | * Copyright (C) 2007 by Albert Astals Cid <aacid@kde.org> * |
4 | * * |
5 | * This program is free software; you can redistribute it and/or modify * |
6 | * it under the terms of the GNU General Public License as published by * |
7 | * the Free Software Foundation; either version 2 of the License, or * |
8 | * (at your option) any later version. * |
9 | ***************************************************************************/ |
10 | |
11 | /* Action stored in the undo buffer */ |
12 | |
13 | #include "action.h" |
14 | |
15 | #include <QGraphicsScene> |
16 | |
17 | #include "todraw.h" |
18 | |
19 | ActionAdd::ActionAdd(ToDraw *item, QGraphicsScene *scene) |
20 | : m_item(item), m_scene(scene), m_done(false) |
21 | { |
22 | } |
23 | |
24 | ActionAdd::~ActionAdd() |
25 | { |
26 | if (!m_done) delete m_item; |
27 | } |
28 | |
29 | void ActionAdd::redo() |
30 | { |
31 | m_scene->addItem(m_item); |
32 | m_done = true; |
33 | } |
34 | |
35 | void ActionAdd::undo() |
36 | { |
37 | m_scene->removeItem(m_item); |
38 | m_done = false; |
39 | } |
40 | |
41 | |
42 | |
43 | ActionRemove::ActionRemove(ToDraw *item, QGraphicsScene *scene) |
44 | : m_item(item), m_scene(scene), m_done(true) |
45 | { |
46 | } |
47 | |
48 | ActionRemove::~ActionRemove() |
49 | { |
50 | if (m_done) delete m_item; |
51 | } |
52 | |
53 | void ActionRemove::redo() |
54 | { |
55 | if (!m_done) |
56 | { |
57 | m_scene->removeItem(m_item); |
58 | m_done = true; |
59 | } |
60 | } |
61 | |
62 | void ActionRemove::undo() |
63 | { |
64 | m_scene->addItem(m_item); |
65 | m_done = false; |
66 | } |
67 | |
68 | |
69 | |
70 | ActionMove::ActionMove(ToDraw *item, const QPointF &pos, int zValue, QGraphicsScene *scene) |
71 | : m_item(item), m_zValue(zValue), m_scene(scene) |
72 | { |
73 | m_pos = QPointF(pos.x() / scene->width(), pos.y() / scene->height()); |
74 | } |
75 | |
76 | void ActionMove::redo() |
77 | { |
78 | QPointF pos = m_item->pos(); |
79 | qreal zValue = m_item->zValue(); |
80 | m_item->setPos(m_pos.x() * m_scene->width(), m_pos.y() * m_scene->height()); |
81 | m_item->setZValue(m_zValue); |
82 | m_pos = QPointF(pos.x() / m_scene->width(), pos.y() / m_scene->height()); |
83 | m_zValue = zValue; |
84 | } |
85 | |
86 | void ActionMove::undo() |
87 | { |
88 | redo(); |
89 | } |
90 | |