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 <KFileItem>
  24 #include <config-baloo.h>
  25
  26 #include <QPointer>
  27 #include <QUrl>
  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 namespace Baloo {
  44     class FileMetaDataWidget;
  45 }
  46
  47 /**
  48  * @brief Manages the widgets that display the meta information
  49 *         for file items of the Information Panel.
  50  */
  51 class InformationPanelContent : public QWidget
  52 {
  53     Q_OBJECT
  54
  55 public:
  56     explicit InformationPanelContent(QWidget* parent = nullptr);
  57     ~InformationPanelContent() override;
  58
  59     /**
  60      * Shows the meta information for the item \p item.
  61      * The preview of the item is generated asynchronously,
  62      * the other meta information are fetched synchronously.
  63      */
  64     void showItem(const KFileItem& item);
  65
  66     /**
  67      * Shows the meta information for the items \p items and its preview
  68      */
  69     void showItems(const KFileItemList& items);
  70
  71     KFileItemList items();
  72
  73     /**
  74      * Refreshes the preview display, hiding it if needed
  75      */
  76     void refreshPreview();
  77
  78 signals:
  79     void urlActivated( const QUrl& url );
  80
  81 public slots:
  82     /**
  83      * Is invoked after the file meta data configuration dialog has been
  84      * closed and refreshes the displayed meta data by the panel.
  85      */
  86     void refreshMetaData();
  87
  88 protected:
  89     /** @see QObject::eventFilter() */
  90     bool eventFilter(QObject* obj, QEvent* event) override;
  91
  92 private slots:
  93     /**
  94      * Is invoked if no preview is available for the item. In this
  95      * case the icon will be shown.
  96      */
  97     void showIcon(const KFileItem& item);
  98
  99     /**
 100      * Is invoked if a preview is available for the item. The preview
 101      * \a pixmap is shown inside the info page.
 102      */
 103     void showPreview(const KFileItem& item, const QPixmap& pixmap);
 104
 105     /**
 106      * Marks the currently shown preview as outdated
 107      * by greying the content.
 108      */
 109     void markOutdatedPreview();
 110
 111     void slotHasVideoChanged(bool hasVideo);
 112
 113 private:
 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     QPointer<KIO::PreviewJob> m_previewJob;
 132     QTimer* m_outdatedPreviewTimer;
 133
 134     PixmapViewer* m_preview;
 135     PhononWidget* m_phononWidget;
 136     QLabel* m_nameLabel;
 137     Baloo::FileMetaDataWidget* m_metaDataWidget;
 138     QScrollArea* m_metaDataArea;
 139
 140     PlacesItemModel* m_placesItemModel;
 141 };
 142
 143 #endif // INFORMATIONPANELCONTENT_H