source/utils/CarlaMainLoop.hpp

   1 /*
   2  * Carla Main-Loop utils
   3  * Copyright (C) 2017 Filipe Coelho <falktx@falktx.com>
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation; either version 2 of
   8  * the License, or 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  * For a full copy of the GNU General Public License see the doc/GPL.txt file.
  16  */
  17
  18 #ifndef CARLA_MAIN_LOOP_HPP_INCLUDED
  19 #define CARLA_MAIN_LOOP_HPP_INCLUDED
  20
  21 #include "CarlaBackend.h"
  22 #include "CarlaUtils.hpp"
  23
  24 #ifdef CARLA_OS_MAC
  25 # import <Cocoa/Cocoa.h>
  26 #endif
  27
  28 // ---------------------------------------------------------------------------------------------------------------------
  29
  30 CARLA_BACKEND_START_NAMESPACE
  31
  32 static inline
  33 bool runMainLoopOnce()
  34 {
  35 #if defined(CARLA_OS_MAC)
  36     NSAutoreleasePool* const pool = [[NSAutoreleasePool alloc] init];
  37     NSDate* const date = [NSDate distantPast];
  38     NSEvent* event;
  39
  40     for (;;)
  41     {
  42         event = [NSApp
  43                 #ifdef __MAC_10_12
  44                  nextEventMatchingMask:NSEventMaskAny
  45                 #else
  46                  nextEventMatchingMask:NSAnyEventMask
  47                 #endif
  48                              untilDate:date
  49                                 inMode:NSDefaultRunLoopMode
  50                                dequeue:YES];
  51
  52         if (event == nil)
  53             break;
  54
  55         [NSApp sendEvent: event];
  56     }
  57
  58     [pool release];
  59 #elif defined(CARLA_OS_WIN)
  60     MSG msg;
  61     if (! ::PeekMessage(&msg, nullptr, 0, 0, PM_NOREMOVE))
  62         return true;
  63
  64     if (::GetMessage(&msg, nullptr, 0, 0) >= 0)
  65     {
  66         if (msg.message == WM_QUIT)
  67             return false;
  68
  69         //TranslateMessage(&msg);
  70         DispatchMessage(&msg);
  71     }
  72 #endif
  73
  74     return true;
  75 }
  76
  77 CARLA_BACKEND_END_NAMESPACE
  78
  79 // ---------------------------------------------------------------------------------------------------------------------
  80
  81 #endif // CARLA_MAIN_LOOP_HPP_INCLUDED