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  90      * Marks the currently shown preview as outdated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