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 104      * Marks the currently shown preview as outdated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