src/dolphincolumnwidget.h

   1 /***************************************************************************
   2  *   Copyright (C) 2007 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 DOLPHINCOLUMNWIDGET_H
  21 #define DOLPHINCOLUMNWIDGET_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 DolphinColumnView;
  33 class DolphinModel;
  34 class DolphinSortFilterProxyModel;
  35 class IconManager;
  36 class KDirLister;
  37 class KJob;
  38 class KFileItem;
  39 class KFileItemList;
  40 class QPixmap;
  41
  42 /**
  43  * Represents one column inside the DolphinColumnView and has been
  44  * extended to respect view options and hovering information.
  45  */
  46 class DolphinColumnWidget : public QListView
  47 {
  48     Q_OBJECT
  49
  50 public:
  51     DolphinColumnWidget(QWidget* parent,
  52                         DolphinColumnView* columnView,
  53                         const KUrl& url);
  54     virtual ~DolphinColumnWidget();
  55
  56     /** Sets the size of the icons. */
  57     void setDecorationSize(const QSize& size);
  58
  59     /**
  60      * An active column is defined as column, which shows the same URL
  61      * as indicated by the URL navigator. The active column is usually
  62      * drawn in a lighter color. All operations are applied to this column.
  63      */
  64     void setActive(bool active);
  65     bool isActive() const;
  66
  67     /**
  68      * Sets the directory URL of the child column that is shown next to
  69      * this column. This property is only used for a visual indication
  70      * of the shown directory, it does not trigger a loading of the model.
  71      */
  72     void setChildUrl(const KUrl& url);
  73     const KUrl& childUrl() const;
  74
  75     /** Sets the directory URL that is shown inside the column widget. */
  76     void setUrl(const KUrl& url);
  77
  78     /** Returns the directory URL that is shown inside the column widget. */
  79     const KUrl& url() const;
  80
  81     /** Reloads the directory DolphinColumnWidget::url(). */
  82     void reload();
  83
  84     void setSorting(DolphinView::Sorting sorting);
  85     void setSortOrder(Qt::SortOrder order);
  86     void setShowHiddenFiles(bool show);
  87     void setShowPreview(bool show);
  88
  89     /**
  90      * Updates the background color dependent from the activation state
  91      * \a isViewActive of the column view.
  92      */
  93     void updateBackground();
  94
  95     /**
  96      * Filters the currently shown items by \a nameFilter. All items
  97      * which contain the given filter string will be shown.
  98      */
  99     void setNameFilter(const QString& nameFilter);
 100
 101 protected:
 102     virtual QStyleOptionViewItem viewOptions() const;
 103     virtual void startDrag(Qt::DropActions supportedActions);
 104     virtual void dragEnterEvent(QDragEnterEvent* event);
 105     virtual void dragLeaveEvent(QDragLeaveEvent* event);
 106     virtual void dragMoveEvent(QDragMoveEvent* event);
 107     virtual void dropEvent(QDropEvent* event);
 108     virtual void paintEvent(QPaintEvent* event);
 109     virtual void mousePressEvent(QMouseEvent* event);
 110     virtual void keyPressEvent(QKeyEvent* event);
 111     virtual void contextMenuEvent(QContextMenuEvent* event);
 112     virtual void selectionChanged(const QItemSelection& selected, const QItemSelection& deselected);
 113
 114 private slots:
 115     /**
 116      * If the item specified by \a index is a directory, then this
 117      * directory will be loaded in a new column. If the  item is a
 118      * file, the corresponding application will get started.
 119      */
 120     void triggerItem(const QModelIndex& index);
 121
 122     void slotEntered(const QModelIndex& index);
 123
 124     void requestActivation();
 125
 126 private:
 127     /** Used by DolphinColumnWidget::setActive(). */
 128     void activate();
 129
 130     /** Used by DolphinColumnWidget::setActive(). */
 131     void deactivate();
 132
 133     KFileItem itemForIndex(const QModelIndex& index) const;
 134
 135 private:
 136     bool m_active;
 137     DolphinColumnView* m_view;
 138     KUrl m_url;      // URL of the directory that is shown
 139     KUrl m_childUrl; // URL of the next column that is shown
 140
 141     QFont m_font;
 142     QSize m_decorationSize;
 143
 144     KDirLister* m_dirLister;
 145     DolphinModel* m_dolphinModel;
 146     DolphinSortFilterProxyModel* m_proxyModel;
 147
 148     IconManager* m_iconManager;
 149
 150     bool m_dragging;   // TODO: remove this property when the issue #160611 is solved in Qt 4.4
 151     QRect m_dropRect;  // TODO: remove this property when the issue #160611 is solved in Qt 4.4
 152 };
 153
 154 inline bool DolphinColumnWidget::isActive() const
 155 {
 156     return m_active;
 157 }
 158
 159 inline void DolphinColumnWidget::setChildUrl(const KUrl& url)
 160 {
 161     m_childUrl = url;
 162 }
 163
 164 inline const KUrl& DolphinColumnWidget::childUrl() const
 165 {
 166     return m_childUrl;
 167 }
 168
 169 inline void DolphinColumnWidget::setUrl(const KUrl& url)
 170 {
 171     if (url != m_url) {
 172         m_url = url;
 173         reload();
 174     }
 175 }
 176
 177 inline const KUrl& DolphinColumnWidget::url() const
 178 {
 179     return m_url;
 180 }
 181
 182 #endif