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>
27 #include <QPropertyAnimation>
30 * @brief Map view widget
32 * @author Sami Rämö - sami.ramo (at) ixonos.com
33 * @author Pekka Nissinen - pekka.nissinen (at) ixonos.com
35 class MapView : public QGraphicsView
44 Q_PROPERTY(qreal viewScale READ viewScale WRITE setViewScale)
50 * @param parent Parent
52 MapView(QWidget *parent = 0);
54 /*******************************************************************************
55 * BASE CLASS INHERITED AND REIMPLEMENTED MEMBER FUNCTIONS
56 ******************************************************************************/
59 * @brief Called when view is resized.
61 * @param event resize event
63 void resizeEvent(QResizeEvent *event);
66 * @brief Called when view is displayed.
68 * @param event show event
70 void showEvent(QShowEvent *event);
74 * @brief Event handler for mouse move events
76 * Does calculate mouse movement delta from last event position and new view center
77 * based on that delta. Saves current event position for next round. Emits viewScrolled
78 * signal and doesn't actually scroll the view.
79 * @param event Mouse event
81 void mouseMoveEvent(QMouseEvent *event);
84 * @brief Event handler for mouse press events
86 * Saves inial values for mouse and scene location for dragging view.
87 * @param event Mouse event
89 void mousePressEvent(QMouseEvent *event);
91 /*******************************************************************************
92 * MEMBER FUNCTIONS AND SLOTS
93 ******************************************************************************/
96 * @brief Slot for centering view to new location
98 * @param sceneCoordinate Scene coordinates of the new center point
100 void centerToSceneCoordinates(QPoint sceneCoordinate);
103 * @brief Set zoom level of the view
105 * @param zoomLevel Zoom level
107 void setZoomLevel(int zoomLevel);
111 * @brief Set new view scale
113 * @param viewScale New scaling factor
115 void setViewScale(qreal viewScale);
118 * @brief Get current view scale
120 * @return Current view scaling factor
124 /*******************************************************************************
126 ******************************************************************************/
129 * @brief Signal for view resize events.
131 * Signal is emitted when view has been resized.
132 * @param size view size
134 void viewResized(const QSize &size);
137 * @brief Signal for view scroll events
139 * Signal is emitted when view is scrolled.
140 * @param sceneCoordinate Scene coordinates of the new center point of the view
142 void viewScrolled(QPoint sceneCoordinate);
145 * @brief Signal for informing that zooming animation is finished
147 void viewZoomFinished();
150 * @brief Signal for updating view content
152 * Signal is emitted when view content needs an update.
153 * @param viewTopLeft Scene coordinate of the viewport top left corner
155 void viewContentChanged(QPoint viewTopLeft);
158 * @brief Signal for drawing OSM license
160 * Signal is emitted when view is resized.
161 * @param width Viewport width
162 * @param height Viewport height
164 void viewResizedNewSize(int width, int height);
166 /*******************************************************************************
168 ******************************************************************************/
170 QPoint m_mousePosition; ///< Previous mouse event position
171 QPoint m_scenePosition; ///< New center position
172 QPropertyAnimation *m_zoomAnimation; ///< Zoom animation