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
  38 /**
  39  * @brief Represents the view, where each item is shown as an icon.
  40  *
  41  * It is also possible that instead of the icon a preview of the item
  42  * content is shown.
  43  */
  44 class LIBDOLPHINPRIVATE_EXPORT DolphinIconsView : public KCategorizedView
  45 {
  46     Q_OBJECT
  47
  48 public:
  49     explicit DolphinIconsView(QWidget* parent, DolphinController* controller);
  50     virtual ~DolphinIconsView();
  51     virtual void scrollTo(const QModelIndex& index, ScrollHint hint = EnsureVisible);
  52
  53 protected slots:
  54     virtual void dataChanged(const QModelIndex& topLeft, const QModelIndex& bottomRight);
  55
  56 protected:
  57     virtual QStyleOptionViewItem viewOptions() const;
  58     virtual void contextMenuEvent(QContextMenuEvent* event);
  59     virtual void mousePressEvent(QMouseEvent* event);
  60     virtual void startDrag(Qt::DropActions supportedActions);
  61     virtual void dragEnterEvent(QDragEnterEvent* event);
  62     virtual void dragLeaveEvent(QDragLeaveEvent* event);
  63     virtual void dragMoveEvent(QDragMoveEvent* event);
  64     virtual void dropEvent(QDropEvent* event);
  65     virtual void keyPressEvent(QKeyEvent* event);
  66     virtual void wheelEvent(QWheelEvent* event);
  67     virtual void showEvent(QShowEvent* event);
  68     virtual void leaveEvent(QEvent* event);
  69
  70 private slots:
  71     void slotShowPreviewChanged();
  72     void slotAdditionalInfoChanged();
  73     void zoomIn();
  74     void zoomOut();
  75     void requestActivation();
  76     void updateFont();
  77
  78 private:
  79     bool isZoomInPossible() const;
  80     bool isZoomOutPossible() const;
  81
  82     /** Returns the increased icon size for the size \a size. */
  83     int increasedIconSize(int size) const;
  84
  85     /** Returns the decreased icon size for the size \a size. */
  86     int decreasedIconSize(int size) const;
  87
  88     /**
  89      * Updates the size of the grid depending on the state
  90      * of \a showPreview and \a additionalInfoCount.
  91      */
  92     void updateGridSize(bool showPreview, int additionalInfoCount);
  93
  94     /**
  95      * Returns the number of additional information lines that should
  96      * be shown below the item name.
  97      */
  98     int additionalInfoCount() const;
  99
 100 private:
 101     bool m_enableScrollTo;
 102     DolphinController* m_controller;
 103     SelectionManager* m_selectionManager;
 104     DolphinCategoryDrawer* m_categoryDrawer;
 105
 106     QFont m_font;
 107     QSize m_decorationSize;
 108     QStyleOptionViewItem::Position m_decorationPosition;
 109     Qt::Alignment m_displayAlignment;
 110
 111     QSize m_itemSize;
 112     QRect m_dropRect;
 113 };
 114
 115 #endif