src/panels/information/informationpanelcontent.h

   1 /***************************************************************************
   2  *   Copyright (C) 2009-2010 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 INFORMATIONPANELCONTENT_H
  21 #define INFORMATIONPANELCONTENT_H
  22
  23 #include <kconfig.h>
  24 #include <kfileitem.h>
  25 #include <kurl.h>
  26 #include <kvbox.h>
  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     void configureSettings();
  66
  67 signals:
  68     void urlActivated( const KUrl& url );
  69
  70 protected:
  71     /** @see QObject::eventFilter() */
  72     virtual bool eventFilter(QObject* obj, QEvent* event);
  73
  74 private slots:
  75     /**
  76      * Is invoked if no preview is available for the item. In this
  77      * case the icon will be shown.
  78      */
  79     void showIcon(const KFileItem& item);
  80
  81     /**
  82      * Is invoked if a preview is available for the item. The preview
  83      * \a pixmap is shown inside the info page.
  84      */
  85     void showPreview(const KFileItem& item, const QPixmap& pixmap);
  86
  87     /**
  88      * Marks the currently shown preview as outdated
  89      * by greying the content.
  90      */
  91     void markOutdatedPreview();
  92
  93     void slotPlayingStarted();
  94     void slotPlayingStopped();
  95
  96     /**
  97      * Is invoked after the file meta data configuration dialog has been
  98      * closed and refreshes the visibility of the meta data.
  99      */
 100     void refreshMetaData();
 101
 102 private:
 103     /**
 104      * Checks whether the an URL is repesented by a place. If yes,
 105      * then the place icon and name are shown instead of a preview.
 106      * @return True, if the URL represents exactly a place.
 107      * @param url The url to check.
 108      */
 109     bool applyPlace(const KUrl& url);
 110
 111     /**
 112      * Sets the text for the label \a m_nameLabel and assures that the
 113      * text is split in a way that it can be wrapped within the
 114      * label width (QLabel::setWordWrap() does not work if the
 115      * text represents one extremely long word).
 116      */
 117     void setNameLabelText(const QString& text);
 118
 119     /**
 120      * Adjusts the sizes of the widgets dependent on the available
 121      * width given by \p width.
 122      */
 123     void adjustWidgetSizes(int width);
 124
 125 private:
 126     KFileItem m_item;
 127
 128     bool m_pendingPreview;
 129     QTimer* m_outdatedPreviewTimer;
 130
 131     PixmapViewer* m_preview;
 132     PhononWidget* m_phononWidget;
 133     QLabel* m_nameLabel;
 134     KFileMetaDataWidget* m_metaDataWidget;
 135     QScrollArea* m_metaDataArea;
 136 };
 137
 138 #endif // INFORMATIONPANELCONTENT_H