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 <kcategorizedview.h>
  24 #include <kitemcategorizer.h>
  25
  26 #include <QSize>
  27 #include <QStyleOption>
  28
  29 #include <libdolphin_export.h>
  30
  31 class DolphinController;
  32
  33 /**
  34  * @brief Represents the view, where each item is shown as an icon.
  35  *
  36  * It is also possible that instead of the icon a preview of the item
  37  * content is shown.
  38  */
  39 class LIBDOLPHINPRIVATE_EXPORT DolphinIconsView : public KCategorizedView
  40 {
  41     Q_OBJECT
  42
  43 public:
  44     explicit DolphinIconsView(QWidget* parent, DolphinController* controller);
  45     virtual ~DolphinIconsView();
  46
  47     /** @see QAbstractItemView::visualRect() */
  48     virtual QRect visualRect(const QModelIndex& index) const;
  49
  50 protected:
  51     virtual QStyleOptionViewItem viewOptions() const;
  52     virtual void contextMenuEvent(QContextMenuEvent* event);
  53     virtual void mousePressEvent(QMouseEvent* event);
  54     virtual void dragEnterEvent(QDragEnterEvent* event);
  55     virtual void dragLeaveEvent(QDragLeaveEvent* event);
  56     virtual void dragMoveEvent(QDragMoveEvent* event);
  57     virtual void dropEvent(QDropEvent* event);
  58     virtual void paintEvent(QPaintEvent* event);
  59     virtual void keyPressEvent(QKeyEvent* event);
  60
  61 private slots:
  62     void slotShowPreviewChanged(bool show);
  63     void slotShowAdditionalInfoChanged(bool show);
  64     void zoomIn();
  65     void zoomOut();
  66
  67 private:
  68     bool isZoomInPossible() const;
  69     bool isZoomOutPossible() const;
  70
  71     /** Returns the increased icon size for the size \a size. */
  72     int increasedIconSize(int size) const;
  73
  74     /** Returns the decreased icon size for the size \a size. */
  75     int decreasedIconSize(int size) const;
  76
  77     /**
  78      * Updates the size of the grid depending on the state
  79      * of \a showPreview and \a showAdditionalInfo.
  80      */
  81     void updateGridSize(bool showPreview, bool showAdditionalInfo);
  82
  83 private:
  84     DolphinController* m_controller;
  85     QStyleOptionViewItem m_viewOptions;
  86
  87     QSize m_itemSize;
  88
  89     bool m_dragging;   // TODO: remove this property when the issue #160611 is solved in Qt 4.4
  90     QRect m_dropRect;  // TODO: remove this property when the issue #160611 is solved in Qt 4.4
  91 };
  92
  93 #endif