1 | // |
2 | // KBlackBox |
3 | // |
4 | // A simple game inspired by an emacs module |
5 | // |
6 | /*************************************************************************** |
7 | * Copyright (c) 1999-2000, Robert Cimrman * |
8 | * cimrman3@students.zcu.cz * |
9 | * * |
10 | * Copyright (c) 2007, Nicolas Roffet * |
11 | * nicolas-kde@roffet.com * |
12 | * * |
13 | * * |
14 | * This program is free software; you can redistribute it and/or modify * |
15 | * it under the terms of the GNU General Public License as published by * |
16 | * the Free Software Foundation; either version 2 of the License, or * |
17 | * (at your option) any later version. * |
18 | * * |
19 | * This program is distributed in the hope that it will be useful, * |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
22 | * GNU General Public License for more details. * |
23 | * * |
24 | * You should have received a copy of the GNU General Public License * |
25 | * along with this program; if not, write to the * |
26 | * Free Software Foundation, Inc., * |
27 | * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA * |
28 | ***************************************************************************/ |
29 | |
30 | #include "kbbgraphicsitemonbox.h" |
31 | |
32 | |
33 | |
34 | #include <QGraphicsScene> |
35 | #include <QGraphicsSceneMouseEvent> |
36 | |
37 | |
38 | #include "kbbgraphicsitem.h" |
39 | #include "kbbgraphicsiteminteractioninfo.h" |
40 | #include "kbbitemwithposition.h" |
41 | #include "kbbscalablegraphicwidget.h" |
42 | #include "kbbthememanager.h" |
43 | |
44 | |
45 | |
46 | // |
47 | // Constructor / Destructor |
48 | // |
49 | |
50 | KBBGraphicsItemOnBox::KBBGraphicsItemOnBox(KBBScalableGraphicWidget::itemType itemType, KBBScalableGraphicWidget* parent, KBBThemeManager* themeManager, const int boxPosition, const int columns, const int rows) : KBBGraphicsItem(itemType, parent->scene(), themeManager), KBBItemWithPosition() |
51 | { |
52 | m_widget = parent; |
53 | m_columns = columns; |
54 | m_rows = rows; |
55 | m_itemType = itemType; |
56 | |
57 | setBoxPosition(boxPosition); |
58 | |
59 | if (isMovable()) { |
60 | setAcceptDrops(true); |
61 | setFlag(QGraphicsItem::ItemIsMovable); |
62 | } |
63 | } |
64 | |
65 | |
66 | |
67 | // |
68 | // Public |
69 | // |
70 | |
71 | int KBBGraphicsItemOnBox::position () |
72 | { |
73 | return m_boxPosition; |
74 | } |
75 | |
76 | |
77 | |
78 | // |
79 | // Protected |
80 | // |
81 | |
82 | void KBBGraphicsItemOnBox::removeInteractionInfos() |
83 | { |
84 | } |
85 | |
86 | |
87 | |
88 | // |
89 | // Private |
90 | // |
91 | |
92 | int KBBGraphicsItemOnBox::boxPosition(qreal x, qreal y) |
93 | { |
94 | int r = (int)((y - KBBScalableGraphicWidget::BORDER_SIZE)/KBBScalableGraphicWidget::RATIO); |
95 | int c = (int)((x - KBBScalableGraphicWidget::BORDER_SIZE)/KBBScalableGraphicWidget::RATIO); |
96 | |
97 | if ((r<0) || (r>=m_rows) || (c<0) || (c>=m_columns)) { |
98 | if (m_boxPosition>=m_columns*m_rows) |
99 | // Item is outside of the board |
100 | return m_boxPosition; |
101 | else |
102 | return NO_POSITION; |
103 | } else |
104 | return c+r*m_columns; |
105 | } |
106 | |
107 | |
108 | bool KBBGraphicsItemOnBox::isMovable() |
109 | { |
110 | return ((m_itemType==KBBScalableGraphicWidget::playerBall) || (m_itemType==KBBScalableGraphicWidget::unsureBall) || (m_itemType==KBBScalableGraphicWidget::markerNothing)); |
111 | } |
112 | |
113 | |
114 | void KBBGraphicsItemOnBox::mousePressEvent (QGraphicsSceneMouseEvent* event) |
115 | { |
116 | m_dragXPos = x(); |
117 | m_dragYPos = y(); |
118 | m_dragX = event->scenePos().x(); |
119 | m_dragY = event->scenePos().y(); |
120 | |
121 | if (isMovable()) { |
122 | setCursor(Qt::ClosedHandCursor); |
123 | removeInteractionInfos(); |
124 | } |
125 | } |
126 | |
127 | |
128 | void KBBGraphicsItemOnBox::mouseReleaseEvent (QGraphicsSceneMouseEvent* event) |
129 | { |
130 | // Let's Qt handle the drag en drop |
131 | QGraphicsItem::mouseReleaseEvent(event); |
132 | |
133 | qreal dropX = event->scenePos().x(); |
134 | qreal dropY = event->scenePos().y(); |
135 | |
136 | if ((dropX==m_dragX) && (dropY==m_dragY)) { |
137 | setCursor(Qt::ArrowCursor); |
138 | if ((position()!=NO_POSITION) && (position()<(m_columns*m_rows))) |
139 | m_widget->mouseBoxClick(event->button(), position()); |
140 | } else if (isMovable()) { |
141 | setCursor(Qt::ArrowCursor); |
142 | |
143 | if ((boxPosition(dropX, dropY)==NO_POSITION) || (boxPosition(dropX, dropY)==boxPosition(m_dragX, m_dragY)) || (boxPosition(dropX, dropY)>=m_columns*m_rows)) |
144 | // Cancel move |
145 | setPos(m_dragXPos, m_dragYPos); |
146 | else { |
147 | if (m_itemType==KBBScalableGraphicWidget::markerNothing) |
148 | setBoxPosition(m_widget->moveMarkerNothing(boxPosition(m_dragX, m_dragY), boxPosition(dropX, dropY))); |
149 | else { |
150 | int newPos = m_widget->positionAfterMovingBall(boxPosition(m_dragX, m_dragY), boxPosition(dropX, dropY)); |
151 | |
152 | // if we do move from outside the board. Because in this case and if the move is OK, we will destroy ourself to put a "real" new ball over the board... So we cannot do anything else more after calling m_widget->moveBall()... |
153 | if ((m_boxPosition==NO_POSITION) || (m_boxPosition>=(m_columns*m_rows))) { |
154 | if (newPos==m_boxPosition) |
155 | setPos(m_dragXPos, m_dragYPos); |
156 | else |
157 | m_widget->moveBall(boxPosition(m_dragX, m_dragY), boxPosition(dropX, dropY)); |
158 | } else |
159 | setBoxPosition(m_widget->moveBall(boxPosition(m_dragX, m_dragY), boxPosition(dropX, dropY))); |
160 | } |
161 | } |
162 | } |
163 | } |
164 | |
165 | |
166 | void KBBGraphicsItemOnBox::setBoxPosition(int boxPosition) |
167 | { |
168 | m_boxPosition = boxPosition; |
169 | |
170 | if ((boxPosition!=NO_POSITION) && (boxPosition<m_columns*m_rows)) { |
171 | QPointF p((qreal) (KBBScalableGraphicWidget::BORDER_SIZE + KBBScalableGraphicWidget::RATIO*(boxPosition % m_columns)), (qreal) (KBBScalableGraphicWidget::BORDER_SIZE + KBBScalableGraphicWidget::RATIO*(boxPosition / m_columns))); |
172 | setPos(p); |
173 | } |
174 | } |
175 | |