src/panels/information/informationpanelcontent.h

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  89      * Marks the currently shown preview as outdated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