src/views/zoomlevelinfo.h

   1 /***************************************************************************
   2  *   Copyright (C) 2008 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 ZOOMLEVELINFO_H
  21 #define ZOOMLEVELINFO_H
  22
  23 class QSize;
  24
  25 /**
  26  * @short Helper class for getting information about the zooming
  27  *        capabilities.
  28  */
  29 class ZoomLevelInfo {
  30 public:
  31     static int minimumLevel();
  32     static int maximumLevel();
  33
  34     /**
  35      * Helper method for the view implementation to get
  36      * the icon size for the zoom level \a level that
  37      * is between the range ZoomLevelInfo::minimumLevel() and
  38      * ZoomLevelInfo::maximumLevel().
  39      */
  40     static int iconSizeForZoomLevel(int level);
  41
  42     /**
  43      * Helper method for the view implementation to get
  44      * the zoom level for the icon size \a size that
  45      * is between the range ZoomLevelInfo::minimumLevel() and
  46      * ZoomLevelInfo::maximumLevel().
  47      */
  48     static int zoomLevelForIconSize(const QSize& size);
  49 };
  50
  51 #endif