src/statusbarspaceinfo.h

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz (peter.penz@gmx.at) and              *
   3  *   and Patrice Tremblay                                                  *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
  19  ***************************************************************************/
  20 #ifndef STATUSBARSPACEINFO_H
  21 #define STATUSBARSPACEINFO_H
  22
  23 #include <kurl.h>
  24 #include <qcolor.h>
  25
  26 #include <QPaintEvent>
  27 #include <QWidget>
  28
  29 class KDiskFreeSp;
  30 class QTimer;
  31
  32 /**
  33  * @short Shows the available space for the volume represented
  34  *        by the given URL as part of the status bar.
  35  */
  36 class StatusBarSpaceInfo : public QWidget
  37 {
  38     Q_OBJECT
  39
  40 public:
  41     explicit StatusBarSpaceInfo(QWidget* parent);
  42     virtual ~StatusBarSpaceInfo();
  43
  44     void setUrl(const KUrl& url);
  45     const KUrl& url() const
  46     {
  47         return m_url;
  48     }
  49
  50 protected:
  51     /** @see QWidget::paintEvent() */
  52     virtual void paintEvent(QPaintEvent* event);
  53
  54 private slots:
  55     /**
  56      * The strange signature of this method is due to a compiler
  57      * bug (?). More details are given inside the class KDiskFreeSp (see
  58      * KDE Libs documentation).
  59      */
  60     void slotFoundMountPoint(const unsigned long& kBSize,
  61                              const unsigned long& kBUsed,
  62                              const unsigned long& kBAvailable,
  63                              const QString& mountPoint);
  64     void showResult();
  65
  66     /** Refreshs the space information for the current set URL. */
  67     void refresh();
  68
  69 private:
  70     /**
  71      * Returns a color for the progress bar by respecting
  72      * the given background color \a bgColor. It is assured
  73      * that enough contrast is given to have a visual indication.
  74      */
  75     QColor progressColor(const QColor& bgColor) const;
  76
  77 private:
  78     KUrl m_url;
  79     bool m_gettingSize;
  80     unsigned long m_kBSize;
  81     unsigned long m_kBAvailable;
  82 };
  83
  84 #endif