apps/dolphin/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 <QFont>
  29 #include <QSize>
  30 #include <QStyleOption>
  31
  32 #include <libdolphin_export.h>
  33
  34 class DolphinController;
  35 class SelectionManager;
  36 class DolphinCategoryDrawer;
  37 class DolphinViewAutoScroller;
  38
  39 /**
  40  * @brief Represents the view, where each item is shown as an icon.
  41  *
  42  * It is also possible that instead of the icon a preview of the item
  43  * content is shown.
  44  */
  45 class LIBDOLPHINPRIVATE_EXPORT DolphinIconsView : public KCategorizedView
  46 {
  47     Q_OBJECT
  48
  49 public:
  50     explicit DolphinIconsView(QWidget* parent, DolphinController* controller);
  51     virtual ~DolphinIconsView();
  52     virtual void scrollTo(const QModelIndex& index, ScrollHint hint = EnsureVisible);
  53
  54 protected slots:
  55     virtual void dataChanged(const QModelIndex& topLeft, const QModelIndex& bottomRight);
  56
  57 protected:
  58     virtual QStyleOptionViewItem viewOptions() const;
  59     virtual void contextMenuEvent(QContextMenuEvent* event);
  60     virtual void mousePressEvent(QMouseEvent* event);
  61     virtual void startDrag(Qt::DropActions supportedActions);
  62     virtual void dragEnterEvent(QDragEnterEvent* event);
  63     virtual void dragLeaveEvent(QDragLeaveEvent* event);
  64     virtual void dragMoveEvent(QDragMoveEvent* event);
  65     virtual void dropEvent(QDropEvent* event);
  66     virtual void keyPressEvent(QKeyEvent* event);
  67     virtual void wheelEvent(QWheelEvent* event);
  68     virtual void showEvent(QShowEvent* event);
  69     virtual void leaveEvent(QEvent* event);
  70     virtual void currentChanged(const QModelIndex& current, const QModelIndex& previous);
  71     virtual void resizeEvent(QResizeEvent* event);
  72
  73 private slots:
  74     void slotShowPreviewChanged();
  75     void slotAdditionalInfoChanged();
  76     void setZoomLevel(int level);
  77     void requestActivation();
  78     void updateFont();
  79
  80 private:
  81     /**
  82      * Updates the size of the grid depending on the state
  83      * of \a showPreview and \a additionalInfoCount.
  84      */
  85     void updateGridSize(bool showPreview, int additionalInfoCount);
  86
  87     /**
  88      * Returns the number of additional information lines that should
  89      * be shown below the item name.
  90      */
  91     int additionalInfoCount() const;
  92
  93 private:
  94     bool m_enableScrollTo;
  95     DolphinController* m_controller;
  96     SelectionManager* m_selectionManager;
  97     DolphinViewAutoScroller* m_autoScroller;
  98     DolphinCategoryDrawer* m_categoryDrawer;
  99
 100     QFont m_font;
 101     QSize m_decorationSize;
 102     QStyleOptionViewItem::Position m_decorationPosition;
 103     Qt::Alignment m_displayAlignment;
 104
 105     QSize m_itemSize;
 106     QRect m_dropRect;
 107 };
 108
 109 #endif