Add OnMonitorRectItem to separate rect move and resize code from MonitorScene

[kdenlive] / src / onmonitoritems / onmonitorrectitem.h

diff --git a/src/onmonitoritems/onmonitorrectitem.h b/src/onmonitoritems/onmonitorrectitem.h
new file mode 100644 (file)
index 0000000..44e9104
--- /dev/null
+++ b/src/onmonitoritems/onmonitorrectitem.h
@@ -0,0 +1,69 @@
+/***************************************************************************
+ *   Copyright (C) 2010 by Till Theato (root@ttill.de)                     *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
+ ***************************************************************************/
+
+
+#ifndef ONMONITORRECTITEM_H
+#define ONMONITORRECTITEM_H
+
+#include <QtCore>
+#include <QGraphicsRectItem>
+
+enum rectActions { Move, ResizeTopLeft, ResizeBottomLeft, ResizeTopRight, ResizeBottomRight, ResizeLeft, ResizeRight, ResizeTop, ResizeBottom, NoAction };
+
+class OnMonitorRectItem : public QObject, public QGraphicsRectItem
+{
+    Q_OBJECT
+public:
+    OnMonitorRectItem(const QRectF &rect, QGraphicsItem *parent = 0);
+
+    /** @brief Enables/Disables the ability to modify the item.
+     * @param enabled (default = true) */
+    void setEnabled(bool enabled = true);
+
+    /** @brief Gets The action mode for the area @param pos +- 4.
+     * e.g. pos(0,0) returns ResizeTopLeft */
+    rectActions getMode(QPoint pos);
+    
+    enum { Type = UserType + 1};
+    /** @brief Reimplemented to make sure casting works. */
+    int type() const;
+
+    /** @brief Reimplemented to draw the handles. */
+    virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0 );
+
+public slots:
+    /** @brief Saves current mouse position and mode. */
+    void slotMousePressed(QGraphicsSceneMouseEvent *event);
+    /** @brief emits actionFinished signal if item was modified. */
+    void slotMouseReleased(QGraphicsSceneMouseEvent *event);
+    /** @brief Modifies item according to mouse position and mode. */
+    void slotMouseMoved(QGraphicsSceneMouseEvent *event);
+
+private:
+    rectActions m_mode;
+    QPointF m_clickPoint;
+    bool m_enabled;
+    bool m_modified;
+
+signals:
+    void actionFinished();
+    void setCursor(const QCursor &);
+};
+
+#endif