src/panels/information/informationpanelcontent.h

   1 /***************************************************************************
   2  *   Copyright (C) 2009-2010 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 INFORMATIONPANELCONTENT_H
  21 #define INFORMATIONPANELCONTENT_H
  22
  23 #include "config-nepomuk.h"
  24 #include <KConfig>
  25 #include <KFileItem>
  26 #include <KUrl>
  27 #include <KVBox>
  28
  29 class KFileItemList;
  30 class PhononWidget;
  31 class PixmapViewer;
  32 class PlacesItemModel;
  33 class QPixmap;
  34 class QString;
  35 class QLabel;
  36 class QScrollArea;
  37
  38 #ifndef HAVE_NEPOMUK
  39 class KFileMetaDataWidget;
  40 #else
  41 namespace Nepomuk2 {
  42     class FileMetaDataWidget;
  43 }
  44 #endif
  45
  46 /**
  47  * @brief Manages the widgets that display the meta information
  48 *         for file items of the Information Panel.
  49  */
  50 class InformationPanelContent : public QWidget
  51 {
  52     Q_OBJECT
  53
  54 public:
  55     explicit InformationPanelContent(QWidget* parent = 0);
  56     virtual ~InformationPanelContent();
  57
  58     /**
  59      * Shows the meta information for the item \p item.
  60      * The preview of the item is generated asynchronously,
  61      * the other meta information are fetched synchronously.
  62      */
  63     void showItem(const KFileItem& item);
  64
  65     /**
  66      * Shows the meta information for the items \p items.
  67      */
  68     void showItems(const KFileItemList& items);
  69
  70     /**
  71      * Opens a menu which allows to configure which meta information
  72      * should be shown.
  73      *
  74      * TODO: Move this code to the class InformationPanel
  75      */
  76     void configureSettings(const QList<QAction*>& customContextMenuActions);
  77
  78 signals:
  79     void urlActivated( const KUrl& url );
  80
  81 protected:
  82     /** @see QObject::eventFilter() */
  83     virtual bool eventFilter(QObject* obj, QEvent* event);
  84
  85 private slots:
  86     /**
  87      * Is invoked if no preview is available for the item. In this
  88      * case the icon will be shown.
  89      */
  90     void showIcon(const KFileItem& item);
  91
  92     /**
  93      * Is invoked if a preview is available for the item. The preview
  94      * \a pixmap is shown inside the info page.
  95      */
  96     void showPreview(const KFileItem& item, const QPixmap& pixmap);
  97
  98     /**
  99      * Marks the currently shown preview as outdated
 100      * by greying the content.
 101      */
 102     void markOutdatedPreview();
 103
 104     void slotHasVideoChanged(bool hasVideo);
 105
 106     /**
 107      * Is invoked after the file meta data configuration dialog has been
 108      * closed and refreshes the visibility of the meta data.
 109      */
 110     void refreshMetaData();
 111
 112 private:
 113     /**
 114      * Checks whether the an URL is repesented by a place. If yes,
 115      * then the place icon and name are shown instead of a preview.
 116      * @return True, if the URL represents exactly a place.
 117      * @param url The url to check.
 118      */
 119     bool applyPlace(const KUrl& url);
 120
 121     /**
 122      * Sets the text for the label \a m_nameLabel and assures that the
 123      * text is split in a way that it can be wrapped within the
 124      * label width (QLabel::setWordWrap() does not work if the
 125      * text represents one extremely long word).
 126      */
 127     void setNameLabelText(const QString& text);
 128
 129     /**
 130      * Adjusts the sizes of the widgets dependent on the available
 131      * width given by \p width.
 132      */
 133     void adjustWidgetSizes(int width);
 134
 135 private:
 136     KFileItem m_item;
 137
 138     bool m_pendingPreview;
 139     QTimer* m_outdatedPreviewTimer;
 140
 141     PixmapViewer* m_preview;
 142     PhononWidget* m_phononWidget;
 143     QLabel* m_nameLabel;
 144 #ifndef HAVE_NEPOMUK
 145     KFileMetaDataWidget* m_metaDataWidget;
 146 #else
 147     Nepomuk2::FileMetaDataWidget* m_metaDataWidget;
 148 #endif
 149     QScrollArea* m_metaDataArea;
 150
 151     PlacesItemModel* m_placesItemModel;
 152 };
 153
 154 #endif // INFORMATIONPANELCONTENT_H