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-baloo.h"
  24 #include <KConfig>
  25 #include <KFileItem>
  26 #include <KUrl>
  27 #include <KVBox>
  28
  29 #include <QPointer>
  30
  31 class KFileItemList;
  32 class PhononWidget;
  33 class PixmapViewer;
  34 class PlacesItemModel;
  35 class QPixmap;
  36 class QString;
  37 class QLabel;
  38 class QScrollArea;
  39
  40 namespace KIO {
  41   class PreviewJob;
  42 }
  43
  44 #ifndef HAVE_BALOO
  45 class KFileMetaDataWidget;
  46 #else
  47 namespace Baloo {
  48     class FileMetaDataWidget;
  49 }
  50 #endif
  51
  52 /**
  53  * @brief Manages the widgets that display the meta information
  54 *         for file items of the Information Panel.
  55  */
  56 class InformationPanelContent : public QWidget
  57 {
  58     Q_OBJECT
  59
  60 public:
  61     explicit InformationPanelContent(QWidget* parent = 0);
  62     virtual ~InformationPanelContent();
  63
  64     /**
  65      * Shows the meta information for the item \p item.
  66      * The preview of the item is generated asynchronously,
  67      * the other meta information are fetched synchronously.
  68      */
  69     void showItem(const KFileItem& item);
  70
  71     /**
  72      * Shows the meta information for the items \p items.
  73      */
  74     void showItems(const KFileItemList& items);
  75
  76     /**
  77      * Opens a menu which allows to configure which meta information
  78      * should be shown.
  79      *
  80      * TODO: Move this code to the class InformationPanel
  81      */
  82     void configureSettings(const QList<QAction*>& customContextMenuActions);
  83
  84 signals:
  85     void urlActivated( const KUrl& url );
  86
  87 protected:
  88     /** @see QObject::eventFilter() */
  89     virtual bool eventFilter(QObject* obj, QEvent* event);
  90
  91 private slots:
  92     /**
  93      * Is invoked if no preview is available for the item. In this
  94      * case the icon will be shown.
  95      */
  96     void showIcon(const KFileItem& item);
  97
  98     /**
  99      * Is invoked if a preview is available for the item. The preview
 100      * \a pixmap is shown inside the info page.
 101      */
 102     void showPreview(const KFileItem& item, const QPixmap& pixmap);
 103
 104     /**
 105      * Marks the currently shown preview as outdated
 106      * by greying the content.
 107      */
 108     void markOutdatedPreview();
 109
 110     void slotHasVideoChanged(bool hasVideo);
 111
 112     /**
 113      * Is invoked after the file meta data configuration dialog has been
 114      * closed and refreshes the visibility of the meta data.
 115      */
 116     void refreshMetaData();
 117
 118 private:
 119     /**
 120      * Checks whether the an URL is repesented by a place. If yes,
 121      * then the place icon and name are shown instead of a preview.
 122      * @return True, if the URL represents exactly a place.
 123      * @param url The url to check.
 124      */
 125     bool applyPlace(const KUrl& url);
 126
 127     /**
 128      * Sets the text for the label \a m_nameLabel and assures that the
 129      * text is split in a way that it can be wrapped within the
 130      * label width (QLabel::setWordWrap() does not work if the
 131      * text represents one extremely long word).
 132      */
 133     void setNameLabelText(const QString& text);
 134
 135     /**
 136      * Adjusts the sizes of the widgets dependent on the available
 137      * width given by \p width.
 138      */
 139     void adjustWidgetSizes(int width);
 140
 141 private:
 142     KFileItem m_item;
 143
 144     QPointer<KIO::PreviewJob> m_previewJob;
 145     QTimer* m_outdatedPreviewTimer;
 146
 147     PixmapViewer* m_preview;
 148     PhononWidget* m_phononWidget;
 149     QLabel* m_nameLabel;
 150 #ifndef HAVE_BALOO
 151     KFileMetaDataWidget* m_metaDataWidget;
 152 #else
 153     Baloo::FileMetaDataWidget* m_metaDataWidget;
 154 #endif
 155     QScrollArea* m_metaDataArea;
 156
 157     PlacesItemModel* m_placesItemModel;
 158 };
 159
 160 #endif // INFORMATIONPANELCONTENT_H