1 /*
2 * Copyright (C) 2000-2007 Carsten Haitzler, Geoff Harrison and various contributors
3 * Copyright (C) 2004-2015 Kim Woelders
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a copy
6 * of this software and associated documentation files (the "Software"), to
7 * deal in the Software without restriction, including without limitation the
8 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
9 * sell copies of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies of the Software, its documentation and marketing & publicity
14 * materials, and acknowledgment shall be given in the documentation, materials
15 * and software packages that this Software was used.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
21 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24 #include "config.h"
25
26 #include <signal.h>
27 #include <X11/Xlib.h>
28 #include <X11/keysym.h>
29
30 #include "E.h"
31 #include "events.h"
32 #include "ewins.h"
33 #include "screen.h"
34 #include "session.h"
35 #include "xwin.h"
36
37 static void
HandleXIOError(void)38 HandleXIOError(void)
39 {
40 SessionExit(EEXIT_ERROR, NULL);
41 }
42
43 /*
44 * This function sets up all of our connections to X
45 */
46 void
SetupX(const char * dstr)47 SetupX(const char *dstr)
48 {
49 int err;
50 char buf[128];
51 unsigned int mask;
52
53 if (!dstr)
54 dstr = getenv("DISPLAY");
55 if (!dstr)
56 dstr = ":0.0";
57
58 /* Open a connection to the diplay nominated by the DISPLAY variable */
59 err = EDisplayOpen(dstr, Dpy.screen);
60 if (err)
61 {
62 Alert(_("Enlightenment cannot connect to the display nominated by\n"
63 "your shell's DISPLAY environment variable. You may set this\n"
64 "variable to indicate which display name Enlightenment is to\n"
65 "connect to. It may be that you do not have an Xserver already\n"
66 "running to serve that Display connection, or that you do not\n"
67 "have permission to connect to that display. Please make sure\n"
68 "all is correct before trying again. Run an Xserver by running\n"
69 "xdm or startx first, or contact your local system\n"
70 "administrator, or Xserver vendor, or read the X, xdm and\n"
71 "startx manual pages before proceeding.\n"));
72 EExit(1);
73 }
74
75 if (getenv("ESYNCHRONIZE"))
76 XSynchronize(disp, True);
77
78 Dpy.screens = ScreenCount(disp);
79 Dpy.screen = DefaultScreen(disp);
80
81 if (Mode.wm.master ||
82 Mode.wm.master_screen < 0 || Mode.wm.master_screen >= Dpy.screens)
83 Mode.wm.master_screen = Dpy.screen;
84
85 /* Start up on multiple heads, if appropriate */
86 if (Dpy.screens > 1 && !Mode.wm.single && !Mode.wm.restart)
87 {
88 int i;
89
90 for (i = 0; i < Dpy.screens; i++)
91 {
92 pid_t pid;
93
94 if (i == Dpy.screen)
95 continue;
96
97 pid = fork();
98 if (pid)
99 {
100 /* We are the master */
101 Mode.wm.child_count++;
102 Mode.wm.children =
103 EREALLOC(pid_t, Mode.wm.children, Mode.wm.child_count);
104 Mode.wm.children[Mode.wm.child_count - 1] = pid;
105 }
106 else
107 {
108 /* We are a slave */
109 EDisplayDisconnect();
110 Mode.wm.master = 0;
111 Mode.wm.pid = getpid();
112 Dpy.screen = i;
113 ExtInitWinSet(NoXID);
114 #ifdef SIGSTOP
115 kill(getpid(), SIGSTOP);
116 #endif
117 EDisplayOpen(dstr, i);
118 /* Terminate the loop as I am the child process... */
119 break;
120 }
121 }
122 }
123
124 Dpy.name = Estrdup(DisplayString(disp));
125 Esetenv("DISPLAY", Dpy.name);
126
127 Dpy.pixel_black = BlackPixel(disp, Dpy.screen);
128 Dpy.pixel_white = WhitePixel(disp, Dpy.screen);
129
130 EDisplaySetErrorHandlers(EventShowError, HandleXIOError);
131
132 /* Root defaults */
133 RROOT = ERegisterWindow(DefaultRootWindow(disp), NULL);
134
135 if (Mode.wm.window)
136 {
137 VROOT = ECreateWindow(RROOT, 0, 0, Mode.wm.win_w, Mode.wm.win_h, 0);
138
139 /* Enable eesh and edox to pick up the virtual root */
140 Esnprintf(buf, sizeof(buf), "%#x", WinGetXwin(VROOT));
141 Esetenv("ENL_WM_ROOT", buf);
142 }
143 else
144 {
145 /* Running E normally on the root window */
146 VROOT = RROOT;
147 }
148
149 Dpy.root_gc = EXCreateGC(WinGetXwin(VROOT), 0, NULL);
150
151 /* Initialise event handling */
152 EventsInit();
153
154 /* select all the root window events to start managing */
155 Dpy.last_error_code = 0;
156 mask =
157 StructureNotifyMask | SubstructureNotifyMask | SubstructureRedirectMask;
158 ESelectInput(VROOT, mask);
159 ESync(0);
160 if (Dpy.last_error_code)
161 {
162 AlertX(_("Another Window Manager is already running"),
163 _("OK"), NULL, NULL,
164 _("Another Window Manager is already running.\n" "\n"
165 "You will have to quit your current Window Manager first before\n"
166 "you can successfully run Enlightenment.\n"));
167 EExit(1);
168 }
169
170 mask |= ButtonPressMask | ButtonReleaseMask;
171 ESelectInput(VROOT, mask);
172 ESync(0);
173 if (Dpy.last_error_code)
174 {
175 AlertX(_("Cannot select root window button press events"),
176 _("OK"), NULL, NULL,
177 _("Root window button actions will not work.\n"));
178 }
179
180 /* warn, if necessary about X version problems */
181 if (ProtocolVersion(disp) != 11)
182 {
183 AlertX(_("X server version error"), _("Ignore this error"), "",
184 _("Quit Enlightenment"),
185 _("WARNING:\n"
186 "This is not an X11 Xserver. It in fact talks the X%i protocol.\n"
187 "This may mean Enlightenment will either not function, or\n"
188 "function incorrectly. If it is later than X11, then your\n"
189 "server is one the author of Enlightenment neither have\n"
190 "access to, nor have heard of.\n"), ProtocolVersion(disp));
191 }
192
193 /* damn that bloody numlock stuff - ok I'd rather XFree got fixed to not */
194 /* have it as a modifier and everyone have to write specific code to mask */
195 /* it out - but well.... */
196 /* ok under Xfree Numlock and Scollock are lock modifiers and we need */
197 /* to hunt them down to mask them out - EVIL EVIL EVIL hack but needed */
198 {
199 XModifierKeymap *mod;
200 EX_KeyCode nl, sl;
201 unsigned int numlock, scrollock;
202 int i;
203
204 int masks[8] = {
205 ShiftMask, LockMask, ControlMask, Mod1Mask, Mod2Mask, Mod3Mask,
206 Mod4Mask, Mod5Mask
207 };
208
209 numlock = scrollock = 0;
210 mod = XGetModifierMapping(disp);
211 nl = EKeysymToKeycode(XK_Num_Lock);
212 sl = EKeysymToKeycode(XK_Scroll_Lock);
213 if ((mod) && (mod->max_keypermod > 0))
214 {
215 for (i = 0; i < (8 * mod->max_keypermod); i++)
216 {
217 if ((nl) && (mod->modifiermap[i] == nl))
218 numlock = masks[i / mod->max_keypermod];
219 else if ((sl) && (mod->modifiermap[i] == sl))
220 scrollock = masks[i / mod->max_keypermod];
221 }
222 }
223 Mode.masks.mod_combos[0] = 0;
224 Mode.masks.mod_combos[1] = LockMask;
225 if (numlock)
226 {
227 Mode.masks.mod_combos[2] = numlock;
228 Mode.masks.mod_combos[5] = LockMask | numlock;
229 }
230 if (scrollock)
231 {
232 Mode.masks.mod_combos[3] = scrollock;
233 Mode.masks.mod_combos[6] = LockMask | scrollock;
234 }
235 if (numlock && scrollock)
236 {
237 Mode.masks.mod_combos[4] = numlock | scrollock;
238 Mode.masks.mod_combos[7] = LockMask | numlock | scrollock;
239 }
240
241 Mode.masks.mod_key_mask =
242 (ShiftMask | ControlMask | Mod1Mask | Mod2Mask | Mod3Mask | Mod4Mask |
243 Mod5Mask) & (~(numlock | scrollock | LockMask));
244
245 if (mod)
246 XFreeModifiermap(mod);
247 }
248
249 ScreenInit();
250 }
251