src/Pan.cpp

   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 "Pan.hpp"
  25 #include "UIGlobals.hpp"
  26 #include "UIActions.hpp"
  27 #include "MainWindow.hpp"
  28 #include "MapWindow/GlueMapWindow.hpp"
  29 #include "Interface.hpp"
  30 #include "PageActions.hpp"
  31 #include "Input/InputEvents.hpp"
  32
  33 #include <assert.h>
  34
  35 bool
  36 IsPanning()
  37 {
  38   const GlueMapWindow *map = UIGlobals::GetMapIfActive();
  39   return map != NULL && map->IsPanning();
  40 }
  41
  42 void
  43 EnterPan()
  44 {
  45   assert(CommonInterface::main_window != NULL);
  46
  47   GlueMapWindow *map = PageActions::ShowOnlyMap();
  48   if (map == NULL || map->IsPanning())
  49     return;
  50
  51   map->SetPan(true);
  52
  53   InputEvents::setMode(InputEvents::MODE_DEFAULT);
  54   InputEvents::UpdatePan();
  55 }
  56
  57 bool
  58 PanTo(const GeoPoint &location)
  59 {
  60   assert(CommonInterface::main_window != NULL);
  61
  62   GlueMapWindow *map = PageActions::ShowOnlyMap();
  63   if (map == NULL)
  64     return false;
  65
  66   map->PanTo(location);
  67
  68   InputEvents::setMode(InputEvents::MODE_DEFAULT);
  69   InputEvents::UpdatePan();
  70   return true;
  71 }
  72
  73 void
  74 DisablePan()
  75 {
  76   GlueMapWindow *map = UIGlobals::GetMapIfActive();
  77   if (map == NULL || !map->IsPanning())
  78     return;
  79
  80   map->SetPan(false);
  81
  82   InputEvents::UpdatePan();
  83 }
  84
  85 void
  86 LeavePan()
  87 {
  88   GlueMapWindow *map = UIGlobals::GetMapIfActive();
  89   if (map == NULL || !map->IsPanning())
  90     return;
  91
  92   map->SetPan(false);
  93
  94   InputEvents::UpdatePan();
  95   PageActions::Restore();
  96 }
  97
  98 void
  99 TogglePan()
 100 {
 101   if (IsPanning())
 102     LeavePan();
 103   else
 104     EnterPan();
 105 }