src/dolphiniconsview.h

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz (peter.penz@gmx.at)                  *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #ifndef DOLPHINICONSVIEW_H
  21 #define DOLPHINICONSVIEW_H
  22
  23 #include <klistview.h>
  24 #include <kitemcategorizer.h>
  25 #include <QtGui/QStyleOption>
  26 #include <libdolphin_export.h>
  27
  28 class DolphinController;
  29 class DolphinItemCategorizer;
  30 class DolphinView;
  31
  32 /**
  33  * @brief Represents the view, where each item is shown as an icon.
  34  *
  35  * It is also possible that instead of the icon a preview of the item
  36  * content is shown.
  37  */
  38 class LIBDOLPHINPRIVATE_EXPORT DolphinIconsView : public KListView
  39 {
  40     Q_OBJECT
  41
  42 public:
  43     explicit DolphinIconsView(QWidget* parent, DolphinController* controller);
  44     virtual ~DolphinIconsView();
  45
  46 protected:
  47     virtual QStyleOptionViewItem viewOptions() const;
  48     virtual void contextMenuEvent(QContextMenuEvent* event);
  49     virtual void mousePressEvent(QMouseEvent* event);
  50     virtual void mouseReleaseEvent(QMouseEvent* event);
  51     virtual void dragEnterEvent(QDragEnterEvent* event);
  52     virtual void dragLeaveEvent(QDragLeaveEvent* event);
  53     virtual void dragMoveEvent(QDragMoveEvent* event);
  54     virtual void dropEvent(QDropEvent* event);
  55     virtual void paintEvent(QPaintEvent* event);
  56
  57 private slots:
  58     void slotShowPreviewChanged(bool show);
  59     void slotShowAdditionalInfoChanged(bool show);
  60     void zoomIn();
  61     void zoomOut();
  62
  63 private:
  64     bool isZoomInPossible() const;
  65     bool isZoomOutPossible() const;
  66
  67     /** Returns the increased icon size for the size \a size. */
  68     int increasedIconSize(int size) const;
  69
  70     /** Returns the decreased icon size for the size \a size. */
  71     int decreasedIconSize(int size) const;
  72
  73     /**
  74      * Updates the size of the grid depending on the state
  75      * of \a showPreview and \a showAdditionalInfo.
  76      */
  77     void updateGridSize(bool showPreview, bool showAdditionalInfo);
  78
  79 private:
  80     DolphinController* m_controller;
  81     QStyleOptionViewItem m_viewOptions;
  82
  83     bool m_dragging;   // TODO: remove this property when the issue #160611 is solved in Qt 4.4
  84     QRect m_dropRect;  // TODO: remove this property when the issue #160611 is solved in Qt 4.4
  85 };
  86
  87 #endif