1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
// App.cc
// Copyright (c) 2002 - 2006 Henrik Kinnunen (fluxgen at fluxbox dot org)
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
#include "App.hh"
#include "FbString.hh"
#include "Font.hh"
#include "Image.hh"
#include "EventManager.hh"
#ifdef HAVE_CSTRING
#include <cstring>
#else
#include <string.h>
#endif
#ifdef HAVE_CSTDLIB
#include <cstdlib>
#else
#include <stdlib.h>
#endif
#include <set>
namespace FbTk {
App *App::s_app = 0;
App *App::instance() {
if (s_app == 0)
throw std::string("You must create an instance of FbTk::App first!");
return s_app;
}
App::App(const char *displayname):m_done(false), m_display(0) {
if (s_app != 0)
throw std::string("Can't create more than one instance of FbTk::App");
s_app = this;
// this allows the use of std::string.c_str(), which returns
// a blank string, rather than a null string, so we make them equivalent
if (displayname != 0 && displayname[0] == '\0')
displayname = 0;
m_display = XOpenDisplay(displayname);
if (!m_display) {
if (displayname) {
throw std::string("Couldn't connect to XServer") + displayname;
} else {
throw std::string("Couldn't connect to XServer passing null display");
}
}
FbStringUtil::init();
}
App::~App() {
if (m_display != 0) {
Font::shutdown();
XCloseDisplay(m_display);
m_display = 0;
}
s_app = 0;
}
void App::sync(bool discard) {
XSync(display(), discard);
}
void App::eventLoop() {
XEvent ev;
while (!m_done) {
XNextEvent(display(), &ev);
EventManager::instance()->handleEvent(ev);
}
}
void App::end() {
m_done = true; //end loop in App::eventLoop
}
bool App::setenv(const char* key, const char* value) {
if (!key || !*key)
return false;
static std::set<char*> stored;
const size_t key_size = strlen(key);
const size_t value_size = value ? strlen(value) : 0;
char* newenv = new char[key_size + value_size + 2];
if (newenv) {
char* oldenv = getenv(key);
// oldenv points to the value .. we have to go back a bit
if (oldenv && stored.find(oldenv - (key_size + 1)) != stored.end())
oldenv -= (key_size + 1);
else
oldenv = NULL;
memset(newenv, 0, key_size + value_size + 2);
strcat(newenv, key);
strcat(newenv, "=");
if (value_size > 0)
strcat(newenv, value);
if (putenv(newenv) == 0) {
if (oldenv) {
stored.erase(oldenv);
delete[] oldenv;
}
stored.insert(newenv);
}
return true;
}
return false;
}
} // end namespace FbTk
|
