src/dolphincolumnview.h

   1 /***************************************************************************
   2  *   Copyright (C) 2007-2009 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 DOLPHINCOLUMNVIEW_H
  21 #define DOLPHINCOLUMNVIEW_H
  22
  23 #include "dolphinview.h"
  24
  25 #include <QFont>
  26 #include <QListView>
  27 #include <QSize>
  28 #include <QStyleOption>
  29
  30 #include <kurl.h>
  31
  32 class DolphinColumnViewContainer;
  33 class DolphinModel;
  34 class DolphinSortFilterProxyModel;
  35 class DolphinDirLister;
  36 class DolphinViewAutoScroller;
  37 class KFilePreviewGenerator;
  38 class KFileItem;
  39 class KFileItemList;
  40 class SelectionManager;
  41 class ToolTipManager;
  42
  43 /**
  44  * Represents one column inside the DolphinColumnViewContainer.
  45  */
  46 class DolphinColumnView : public QListView
  47 {
  48     Q_OBJECT
  49
  50 public:
  51     DolphinColumnView(QWidget* parent,
  52                       DolphinColumnViewContainer* container,
  53                       const KUrl& url);
  54     virtual ~DolphinColumnView();
  55
  56     /**
  57      * An active column is defined as column, which shows the same URL
  58      * as indicated by the URL navigator. The active column is usually
  59      * drawn in a lighter color. All operations are applied to this column.
  60      */
  61     void setActive(bool active);
  62     bool isActive() const;
  63
  64     /**
  65      * Sets the directory URL of the child column that is shown next to
  66      * this column. This property is only used for a visual indication
  67      * of the shown directory, it does not trigger a loading of the model.
  68      */
  69     void setChildUrl(const KUrl& url);
  70     const KUrl& childUrl() const;
  71
  72     /** Sets the directory URL that is shown inside the column widget. */
  73     void setUrl(const KUrl& url);
  74
  75     /** Returns the directory URL that is shown inside the column widget. */
  76     const KUrl& url() const;
  77
  78     /**
  79      * Updates the background color dependent from the activation state
  80      * \a isViewActive of the column view.
  81      */
  82     void updateBackground();
  83
  84     /**
  85      * Returns the item on the position \a pos. The KFileItem instance
  86      * is null if no item is below the position.
  87      */
  88     KFileItem itemAt(const QPoint& pos) const;
  89
  90 protected:
  91     virtual QStyleOptionViewItem viewOptions() const;
  92     virtual void startDrag(Qt::DropActions supportedActions);
  93     virtual void dragEnterEvent(QDragEnterEvent* event);
  94     virtual void dragLeaveEvent(QDragLeaveEvent* event);
  95     virtual void dragMoveEvent(QDragMoveEvent* event);
  96     virtual void dropEvent(QDropEvent* event);
  97     virtual void paintEvent(QPaintEvent* event);
  98     virtual void mousePressEvent(QMouseEvent* event);
  99     virtual void keyPressEvent(QKeyEvent* event);
 100     virtual void contextMenuEvent(QContextMenuEvent* event);
 101     virtual void wheelEvent(QWheelEvent* event);
 102     virtual void leaveEvent(QEvent* event);
 103     virtual void selectionChanged(const QItemSelection& selected, const QItemSelection& deselected);
 104     virtual void currentChanged(const QModelIndex& current, const QModelIndex& previous);
 105
 106 private slots:
 107     void setZoomLevel(int level);
 108
 109     void slotEntered(const QModelIndex& index);
 110     void requestActivation();
 111     void updateFont();
 112
 113     void slotShowPreviewChanged();
 114
 115 private:
 116     /** Used by DolphinColumnView::setActive(). */
 117     void activate();
 118
 119     /** Used by DolphinColumnView::setActive(). */
 120     void deactivate();
 121
 122     void updateDecorationSize(bool showPreview);
 123
 124 private:
 125     bool m_active;
 126     DolphinColumnViewContainer* m_container;
 127     SelectionManager* m_selectionManager;
 128     DolphinViewAutoScroller* m_autoScroller;
 129     KUrl m_url;      // URL of the directory that is shown
 130     KUrl m_childUrl; // URL of the next column that is shown
 131
 132     QFont m_font;
 133     QSize m_decorationSize;
 134
 135     DolphinDirLister* m_dirLister;
 136     DolphinModel* m_dolphinModel;
 137     DolphinSortFilterProxyModel* m_proxyModel;
 138
 139     KFilePreviewGenerator* m_previewGenerator;
 140
 141     ToolTipManager* m_toolTipManager;
 142
 143     QRect m_dropRect;
 144
 145     friend class DolphinColumnViewContainer;
 146 };
 147
 148 inline bool DolphinColumnView::isActive() const
 149 {
 150     return m_active;
 151 }
 152
 153 inline void DolphinColumnView::setChildUrl(const KUrl& url)
 154 {
 155     m_childUrl = url;
 156 }
 157
 158 inline const KUrl& DolphinColumnView::childUrl() const
 159 {
 160     return m_childUrl;
 161 }
 162
 163 inline void DolphinColumnView::setUrl(const KUrl& url)
 164 {
 165     if (url != m_url) {
 166         m_url = url;
 167         //reload();
 168     }
 169 }
 170
 171 inline const KUrl& DolphinColumnView::url() const
 172 {
 173     return m_url;
 174 }
 175
 176 #endif