src/Projection/ChartProjection.hpp

   1 /*
   2 Copyright_License {
   3
   4   XCSoar Glide Computer - http://www.xcsoar.org/
   5   Copyright (C) 2000-2013 The XCSoar Project
   6   A detailed list of copyright holders can be found in the file "AUTHORS".
   7
   8   This program is free software; you can redistribute it and/or
   9   modify it under the terms of the GNU General Public License
  10   as published by the Free Software Foundation; either version 2
  11   of the License, or (at your option) any later version.
  12
  13   This program is distributed in the hope that it will be useful,
  14   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16   GNU General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with this program; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21 }
  22 */
  23
  24 #include "WindowProjection.hpp"
  25
  26 class TaskProjection;
  27 class OrderedTask;
  28 class OrderedTaskPoint;
  29
  30 /**
  31  * Utility class to determine projection for a chart from task data,
  32  * typically scaled to fill the canvas
  33  */
  34 class ChartProjection:
  35   public WindowProjection
  36 {
  37 public:
  38   ChartProjection() = default;
  39
  40   explicit ChartProjection(const PixelRect &rc,
  41                            const TaskProjection &task_projection,
  42                            fixed radius_factor=fixed(1.1)) {
  43     Set(rc, task_projection, radius_factor);
  44   }
  45
  46   ChartProjection(const PixelRect &rc, const OrderedTask &task,
  47                   const GeoPoint &fallback_loc) {
  48     Set(rc, task, fallback_loc);
  49   }
  50
  51   ChartProjection(const PixelRect &rc, const OrderedTaskPoint &point,
  52                   const GeoPoint &fallback_loc) {
  53     Set(rc, point, fallback_loc);
  54   }
  55
  56   void Set(const PixelRect &rc, const TaskProjection &task_projection,
  57            fixed radius_factor=fixed(1.1));
  58
  59   void Set(const PixelRect &rc, const OrderedTask &task,
  60            const GeoPoint &fallback_loc);
  61
  62   void Set(const PixelRect &rc, const OrderedTaskPoint &point,
  63            const GeoPoint &fallback_loc);
  64
  65 private:
  66   void Set(const PixelRect &rc, const GeoPoint &center, const fixed radius);
  67 };