Provide basic rubberband functionality

This is just a rough draft: The rubberband gets visible and an
automatic scrolling is done if the autoscroll-margins have been
reached. However currently no items get selected yet. Currently
the autoscrolling has a severe bug if the scrollbars are manually
changed before or after a rubberband selection.

1 files changed, 60 insertions, 0 deletions

diff --git a/src/kitemviews/kitemlistrubberband_p.h b/src/kitemviews/kitemlistrubberband_p.h
new file mode 100644
index 000000000..aea58af46
--- /dev/null
+++ b/src/kitemviews/kitemlistrubberband_p.h
@@ -0,0 +1,60 @@
+/***************************************************************************
+ *   Copyright (C) 2011 by Peter Penz <[email protected]>             *
+ *                                                                         *
+ *   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 KITEMLISTRUBBERBAND_H
+#define KITEMLISTRUBBERBAND_H
+
+#include <libdolphin_export.h>
+#include <QObject>
+#include <QPointF>
+
+/**
+ * @brief Manages the rubberband when selecting items.
+ */
+class LIBDOLPHINPRIVATE_EXPORT KItemListRubberBand : public QObject
+{
+    Q_OBJECT
+
+public:
+    explicit KItemListRubberBand(QObject* parent = 0);
+    virtual ~KItemListRubberBand();
+
+    void setStartPosition(const QPointF& pos);
+    QPointF startPosition() const;
+
+    void setEndPosition(const QPointF& pos);
+    QPointF endPosition() const;
+
+    void setActive(bool active);
+    bool isActive() const;
+
+signals:
+    void activationChanged(bool active);
+    void startPositionChanged(const QPointF& current, const QPointF& previous);
+    void endPositionChanged(const QPointF& current, const QPointF& previous);
+
+private:
+    bool m_active;
+    QPointF m_startPos;
+    QPointF m_endPos;
+};
+
+#endif
+
+