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1// App.cc
2// Copyright (c) 2002 Henrik Kinnunen (fluxgen at linuxmail.org)
3//
4// Permission is hereby granted, free of charge, to any person obtaining a
5// copy of this software and associated documentation files (the "Software"),
6// to deal in the Software without restriction, including without limitation
7// the rights to use, copy, modify, merge, publish, distribute, sublicense,
8// and/or sell copies of the Software, and to permit persons to whom the
9// Software is furnished to do so, subject to the following conditions:
10//
11// The above copyright notice and this permission notice shall be included in
12// all copies or substantial portions of the Software.
13//
14// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20// DEALINGS IN THE SOFTWARE.
21
22#include "App.hh"
23
24#include "EventManager.hh"
25
26#include <cassert>
27#include <string>
28
29namespace FbTk {
30
31App *App::s_app = 0;
32
33App *App::instance() {
34 if (s_app == 0)
35 throw std::string("You must create an instance of FbTk::App first!");
36 return s_app;
37}
38
39App::App(const char *displayname):m_done(false), m_display(0) {
40 if (s_app != 0)
41 throw std::string("Can't create more than one instance of FbTk::App");
42 s_app = this;
43 // this allows the use of std::string.c_str(), which returns
44 // a blank string, rather than a null string, so we make them equivalent
45 if (displayname != 0 && displayname[0] == '\0')
46 displayname = 0;
47 m_display = XOpenDisplay(displayname);
48}
49
50App::~App() {
51 if (m_display != 0) {
52 XCloseDisplay(m_display);
53 m_display = 0;
54 }
55 s_app = 0;
56}
57
58void App::sync(bool discard) {
59 XSync(display(), discard);
60}
61
62void App::eventLoop() {
63 XEvent ev;
64 while (!m_done) {
65 XNextEvent(display(), &ev);
66 EventManager::instance()->handleEvent(ev);
67 }
68}
69
70
71void App::end() {
72 m_done = true; //end loop in App::eventLoop
73}
74
75}; // end namespace FbTk