.:F L U X B O X:. - Developer Zone

00001 // App.cc
00002 // Copyright (c) 2002 Henrik Kinnunen (fluxgen at linuxmail.org)
00003 //
00004 // Permission is hereby granted, free of charge, to any person obtaining a
00005 // copy of this software and associated documentation files (the "Software"),
00006 // to deal in the Software without restriction, including without limitation
00007 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
00008 // and/or sell copies of the Software, and to permit persons to whom the
00009 // Software is furnished to do so, subject to the following conditions:
00010 //
00011 // The above copyright notice and this permission notice shall be included in
00012 // all copies or substantial portions of the Software.
00013 //
00014 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00015 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00016 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
00017 // THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00018 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
00019 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
00020 // DEALINGS IN THE SOFTWARE.
00021 
00022 #include "App.hh"
00023 
00024 #include "EventManager.hh"
00025 
00026 #include <cassert>
00027 #include <string>
00028 
00029 namespace FbTk {
00030 
00031 App *App::s_app = 0;
00032 
00033 App *App::instance() {
00034     if (s_app == 0)
00035         throw std::string("You must create an instance of FbTk::App first!");
00036     return s_app;
00037 }
00038 
00039 App::App(const char *displayname):m_done(false), m_display(0) {
00040     if (s_app != 0)
00041         throw std::string("Can't create more than one instance of FbTk::App");
00042     s_app = this;
00043     // this allows the use of std::string.c_str(), which returns 
00044     // a blank string, rather than a null string, so we make them equivalent
00045     if (displayname != 0 && displayname[0] == '\0')
00046         displayname = 0;
00047     m_display = XOpenDisplay(displayname);
00048 }
00049 
00050 App::~App() {
00051     if (m_display != 0) {
00052         XCloseDisplay(m_display);
00053         m_display = 0;
00054     }
00055     s_app = 0;
00056 }
00057 
00058 void App::sync(bool discard) {
00059     XSync(display(), discard);
00060 }
00061 
00062 void App::eventLoop() {
00063     XEvent ev;
00064     while (!m_done) {
00065         XNextEvent(display(), &ev);
00066         EventManager::instance()->handleEvent(ev);
00067     }
00068 }
00069 
00070 
00071 void App::end() {
00072     m_done = true; //end loop in App::eventLoop
00073 }
00074 
00075 }; // end namespace FbTk
App.cc

Fluxbox CVS-Jan-2003
