src/progress.cpp

   1 /* $Id: progress.cpp 23740 2012-01-03 21:32:51Z rubidium $ */
   2
   3 /*
   4  * This file is part of OpenTTD.
   5  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
   6  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   7  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
   8  */
   9
  10 /** @file progress.cpp Functions for modal progress windows. */
  11
  12 #include "stdafx.h"
  13 #include "thread/thread.h"
  14
  15 #include "safeguards.h"
  16
  17 /** Are we in a modal progress or not? */
  18 bool _in_modal_progress = false;
  19 bool _first_in_modal_loop = false;
  20 /** Rights for the performing work. */
  21 ThreadMutex *_modal_progress_work_mutex = ThreadMutex::New();
  22 /** Rights for the painting. */
  23 ThreadMutex *_modal_progress_paint_mutex = ThreadMutex::New();
  24
  25 /**
  26  * Set the modal progress state.
  27  * @note Makes IsFirstModalProgressLoop return true for the next call.
  28  * @param state The new state; are we modal or not?
  29  */
  30 void SetModalProgress(bool state)
  31 {
  32         _in_modal_progress = state;
  33         _first_in_modal_loop = true;
  34 }
  35
  36 /**
  37  * Check whether this is the first modal progress loop.
  38  * @note Set by SetModalProgress, unset by calling this method.
  39  * @return True if this is the first loop.
  40  */
  41 bool IsFirstModalProgressLoop()
  42 {
  43         bool ret = _first_in_modal_loop;
  44         _first_in_modal_loop = false;
  45         return ret;
  46 }