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  91      * Marks the currently shown preview as outdated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