2 Situare - A location system for Facebook
3 Copyright (C) 2010 Ixonos Plc. Authors:
5 Sami Rämö - sami.ramo@ixonos.com
6 Pekka Nissinen - pekka.nissinen@ixonos.com
8 Situare is free software; you can redistribute it and/or
9 modify it under the terms of the GNU General Public License
10 version 2 as published by the Free Software Foundation.
12 Situare is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with Situare; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
26 #include <QGraphicsView>
28 class QPropertyAnimation;
33 * @brief Map view widget
35 * @author Sami Rämö - sami.ramo (at) ixonos.com
36 * @author Pekka Nissinen - pekka.nissinen (at) ixonos.com
38 class MapView : public QGraphicsView
47 Q_PROPERTY(qreal viewScale READ viewScale WRITE setViewScale)
53 * @param parent Parent
55 MapView(QWidget *parent = 0);
57 /*******************************************************************************
58 * BASE CLASS INHERITED AND REIMPLEMENTED MEMBER FUNCTIONS
59 ******************************************************************************/
62 * @brief Called when view is resized.
64 * @param event resize event
66 void resizeEvent(QResizeEvent *event);
70 * @brief Event handler for mouse move events
72 * Does calculate mouse movement delta from last event position and new view center
73 * based on that delta. Saves current event position for next round. Emits viewScrolled
74 * signal and doesn't actually scroll the view.
75 * @param event Mouse event
77 void mouseMoveEvent(QMouseEvent *event);
80 * @brief Event handler for mouse press events
82 * Saves inial values for mouse and scene location for dragging view.
83 * @param event Mouse event
85 void mousePressEvent(QMouseEvent *event);
87 void mouseReleaseEvent(QMouseEvent *event);
89 /*******************************************************************************
90 * MEMBER FUNCTIONS AND SLOTS
91 ******************************************************************************/
94 * @brief Slot for centering view to new location
96 * @param sceneCoordinate Scene coordinates of the new center point
98 void centerToSceneCoordinates(QPoint sceneCoordinate);
101 * @brief Set zoom level of the view
103 * @param zoomLevel Zoom level
105 void setZoomLevel(int zoomLevel);
109 * @brief Set new view scale
111 * @param viewScale New scaling factor
113 void setViewScale(qreal viewScale);
116 * @brief Get current view scale
118 * @return Current view scaling factor
122 /*******************************************************************************
124 ******************************************************************************/
127 * @brief Signal for view resize events.
129 * Signal is emitted when view has been resized.
130 * @param size view size
132 void viewResized(const QSize &size);
135 * @brief Signal for view scroll events
137 * Signal is emitted when view is scrolled.
138 * @param sceneCoordinate Scene coordinates of the new center point of the view
140 void viewScrolled(QPoint sceneCoordinate);
143 * @brief Signal for informing that zooming animation is finished
145 void viewZoomFinished();
147 /*******************************************************************************
149 ******************************************************************************/
153 QPoint m_dragViewSpeed;
154 QPoint m_mouseLastScenePosition; ///< Previous mouse event position
155 QPoint m_mouseLastViewPosition;
156 QPoint m_scenePosition; ///< New center position
157 QPropertyAnimation *m_zoomAnimation; ///< Zoom animation
159 MapScroller *m_scroller;