src/views/dolphincolumnview.h

   1 /***************************************************************************
   2  *   Copyright (C) 2007-2009 by Peter Penz <peter.penz19@gmail.com>        *
   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 #include "dolphintreeview.h"
  25
  26 #include <QFont>
  27 #include <QSize>
  28 #include <QStyleOption>
  29
  30 #include <KUrl>
  31
  32 class DolphinColumnViewContainer;
  33 class DolphinModel;
  34 class DolphinSortFilterProxyModel;
  35 class DolphinDirLister;
  36 class KFileItem;
  37 class QLabel;
  38 class SelectionManager;
  39 class ViewExtensionsFactory;
  40
  41 /**
  42  * Represents one column inside the DolphinColumnViewContainer.
  43  */
  44 class DolphinColumnView : public DolphinTreeView
  45 {
  46     Q_OBJECT
  47
  48 public:
  49     DolphinColumnView(QWidget* parent,
  50                       DolphinColumnViewContainer* container,
  51                       const KUrl& url);
  52     virtual ~DolphinColumnView();
  53
  54     /**
  55      * An active column is defined as column, which shows the same URL
  56      * as indicated by the URL navigator. The active column is usually
  57      * drawn in a lighter color. All operations are applied to this column.
  58      */
  59     void setActive(bool active);
  60     bool isActive() const;
  61
  62     /**
  63      * Sets the directory URL of the child column that is shown next to
  64      * this column. This property is used for a visual indication
  65      * of the shown directory, it does not trigger a loading of the model.
  66      * When no url is selected and the user presses right, then child
  67      * url will be used as column.
  68      */
  69     void setChildUrl(const KUrl& url);
  70     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     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     virtual void setSelectionModel(QItemSelectionModel* model);
  91
  92 protected:
  93     virtual QStyleOptionViewItem viewOptions() const;
  94     virtual bool event(QEvent* event);
  95     virtual void startDrag(Qt::DropActions supportedActions);
  96     virtual void dragEnterEvent(QDragEnterEvent* event);
  97     virtual void dragMoveEvent(QDragMoveEvent* event);
  98     virtual void dropEvent(QDropEvent* event);
  99     virtual void paintEvent(QPaintEvent* event);
 100     virtual void mousePressEvent(QMouseEvent* event);
 101     virtual void keyPressEvent(QKeyEvent* event);
 102     virtual void contextMenuEvent(QContextMenuEvent* event);
 103     virtual void wheelEvent(QWheelEvent* event);
 104     virtual void leaveEvent(QEvent* event);
 105     virtual void currentChanged(const QModelIndex& current, const QModelIndex& previous);
 106     virtual QRect visualRect(const QModelIndex& index) const;
 107     virtual bool acceptsDrop(const QModelIndex& index) const;
 108     virtual bool eventFilter(QObject* watched, QEvent* event);
 109
 110 private slots:
 111     void setZoomLevel(int level);
 112
 113     void slotEntered(const QModelIndex& index);
 114     void requestActivation();
 115     void updateFont();
 116
 117     void slotShowPreviewChanged();
 118
 119     void slotDirListerCompleted();
 120
 121 private:
 122     /** Used by DolphinColumnView::setActive(). */
 123     void activate();
 124
 125     /** Used by DolphinColumnView::setActive(). */
 126     void deactivate();
 127
 128     void updateDecorationSize(bool showPreview);
 129
 130 private:
 131     bool m_active;
 132     DolphinColumnViewContainer* m_container;
 133     SelectionManager* m_selectionManager;
 134     ViewExtensionsFactory* m_extensionsFactory;
 135     KUrl m_url;      // URL of the directory that is shown
 136     KUrl m_childUrl; // URL of the next column that is shown
 137
 138     QFont m_font;
 139     QSize m_decorationSize;
 140
 141     DolphinDirLister* m_dirLister;
 142     DolphinModel* m_dolphinModel;
 143     DolphinSortFilterProxyModel* m_proxyModel;
 144
 145     QLabel* m_resizeWidget;
 146     int m_resizeXOrigin;
 147
 148     friend class DolphinColumnViewContainer;
 149 };
 150
 151 #endif