2 Situare - A location system for Facebook
3 Copyright (C) 2010 Ixonos Plc. Authors:
5 Sami Rämö - sami.ramo@ixonos.com
7 Situare is free software; you can redistribute it and/or
8 modify it under the terms of the GNU General Public License
9 version 2 as published by the Free Software Foundation.
11 Situare is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with Situare; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
25 #include <QGraphicsView>
26 #include <QPropertyAnimation>
29 * @brief Map view widget
31 * @author Sami Rämö - sami.ramo (at) ixonos.com
33 class MapView : public QGraphicsView
42 Q_PROPERTY(qreal viewScale READ viewScale WRITE setViewScale)
48 * @param parent Parent
50 MapView(QWidget *parent = 0);
52 /*******************************************************************************
53 * BASE CLASS INHERITED AND REIMPLEMENTED MEMBER FUNCTIONS
54 ******************************************************************************/
57 * @brief Called when view is resized.
59 * @param event resize event
61 void resizeEvent(QResizeEvent *event);
65 * @brief Event handler for mouse move events
67 * Does calculate mouse movement delta from last event position and new view center
68 * based on that delta. Saves current event position for next round. Emits viewScrolled
69 * signal and doesn't actually scroll the view.
70 * @param event Mouse event
72 void mouseMoveEvent(QMouseEvent *event);
75 * @brief Event handler for mouse press events
77 * Saves inial values for mouse and scene location for dragging view.
78 * @param event Mouse event
80 void mousePressEvent(QMouseEvent *event);
82 /*******************************************************************************
83 * MEMBER FUNCTIONS AND SLOTS
84 ******************************************************************************/
87 * @brief Slot for centering view to new location
89 * @param sceneCoordinate Scene coordinates of the new center point
91 void centerToSceneCoordinates(QPoint sceneCoordinate);
94 * @brief Set zoom level of the view
96 * @param zoomLevel Zoom level
98 void setZoomLevel(int zoomLevel);
102 * @brief get current horizontal scale (vertical should be same)
104 * @return qreal Current horizontal scale value
106 qreal currentScale();
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
146 void viewZoomFinished();
149 * @brief Signal for updating view content
151 * Signal is emitted when view content needs an update.
152 * @param viewTopLeft Scene coordinate of the viewport top left corner
154 void viewContentChanged(QPoint viewTopLeft);
156 /*******************************************************************************
158 ******************************************************************************/
160 QPoint m_mousePosition; ///< Previous mouse event position
161 QPoint m_scenePosition; ///< New center position
162 QPropertyAnimation *m_zoomAnimation; ///< Zoom animation