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
  25 #include <kfileitem.h>
  26 #include <kfileitemdelegate.h>
  27
  28 #include <QSize>
  29 #include <QStyleOption>
  30
  31 #include <libdolphin_export.h>
  32
  33 class DolphinController;
  34 class DolphinCategoryDrawer;
  35
  36 /**
  37  * @brief Represents the view, where each item is shown as an icon.
  38  *
  39  * It is also possible that instead of the icon a preview of the item
  40  * content is shown.
  41  */
  42 class LIBDOLPHINPRIVATE_EXPORT DolphinIconsView : public KCategorizedView
  43 {
  44     Q_OBJECT
  45
  46 public:
  47     explicit DolphinIconsView(QWidget* parent, DolphinController* controller);
  48     virtual ~DolphinIconsView();
  49
  50     /** @see QAbstractItemView::visualRect() */
  51     virtual QRect visualRect(const QModelIndex& index) const;
  52
  53 protected:
  54     virtual QStyleOptionViewItem viewOptions() const;
  55     virtual void contextMenuEvent(QContextMenuEvent* event);
  56     virtual void mousePressEvent(QMouseEvent* event);
  57     virtual void startDrag(Qt::DropActions supportedActions);
  58     virtual void dragEnterEvent(QDragEnterEvent* event);
  59     virtual void dragLeaveEvent(QDragLeaveEvent* event);
  60     virtual void dragMoveEvent(QDragMoveEvent* event);
  61     virtual void dropEvent(QDropEvent* event);
  62     virtual void paintEvent(QPaintEvent* event);
  63     virtual void keyPressEvent(QKeyEvent* event);
  64
  65 private slots:
  66     void triggerItem(const QModelIndex& index);
  67     void slotEntered(const QModelIndex& index);
  68     void slotShowPreviewChanged();
  69     void slotAdditionalInfoChanged(const KFileItemDelegate::InformationList& info);
  70     void zoomIn();
  71     void zoomOut();
  72
  73 private:
  74     bool isZoomInPossible() const;
  75     bool isZoomOutPossible() const;
  76
  77     /** Returns the increased icon size for the size \a size. */
  78     int increasedIconSize(int size) const;
  79
  80     /** Returns the decreased icon size for the size \a size. */
  81     int decreasedIconSize(int size) const;
  82
  83     /**
  84      * Updates the size of the grid depending on the state
  85      * of \a showPreview and \a additionalInfoCount.
  86      */
  87     void updateGridSize(bool showPreview, int additionalInfoCount);
  88
  89     KFileItem itemForIndex(const QModelIndex& index) const;
  90
  91     /**
  92      * Returns the number of additional information lines that should
  93      * be shown below the item name.
  94      */
  95     int additionalInfoCount() const;
  96
  97 private:
  98     DolphinController* m_controller;
  99     DolphinCategoryDrawer* m_categoryDrawer;
 100     QStyleOptionViewItem m_viewOptions;
 101
 102     QSize m_itemSize;
 103
 104     bool m_dragging;   // TODO: remove this property when the issue #160611 is solved in Qt 4.4
 105     QRect m_dropRect;  // TODO: remove this property when the issue #160611 is solved in Qt 4.4
 106 };
 107
 108 #endif