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view main.c @ 50:148f25ed0ad7

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several other additions/fixes, dwm is quite usable already
author Anselm R. Garbe <garbeam@wmii.de>
date Thu, 13 Jul 2006 18:21:38 +0200
parents 466591c2f967
children 035617ee18d1
line source
1 /*
2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
3 * See LICENSE file for license details.
4 */
5
6 #include <stdarg.h>
7 #include <stdio.h>
8 #include <stdlib.h>
9
10 #include <X11/cursorfont.h>
11 #include <X11/Xatom.h>
12 #include <X11/Xproto.h>
13
14 #include "dwm.h"
15
16 /********** CUSTOMIZE **********/
17
18 char *tags[TLast] = {
19 [Tscratch] = "scratch",
20 [Tdev] = "dev",
21 [Tirc] = "irc",
22 [Twww] = "www",
23 [Twork] = "work",
24 };
25
26 /********** CUSTOMIZE **********/
27
28 /* X structs */
29 Display *dpy;
30 Window root, barwin;
31 Atom wm_atom[WMLast], net_atom[NetLast];
32 Cursor cursor[CurLast];
33 Bool running = True;
34 Bool issel;
35
36 char stext[1024];
37 int tsel = Tdev; /* default tag */
38 int screen, sx, sy, sw, sh, th;
39
40 DC dc = {0};
41 Client *clients = NULL;
42 Client *sel = NULL;
43
44 static Bool other_wm_running;
45 static const char version[] =
46 "dwm - " VERSION ", (C)opyright MMVI Anselm R. Garbe\n";
47 static int (*x_error_handler) (Display *, XErrorEvent *);
48
49 static void
50 usage() { error("usage: dwm [-v]\n"); }
51
52 static void
53 scan_wins()
54 {
55 unsigned int i, num;
56 Window *wins;
57 XWindowAttributes wa;
58 Window d1, d2;
59
60 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
61 for(i = 0; i < num; i++) {
62 if(!XGetWindowAttributes(dpy, wins[i], &wa))
63 continue;
64 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
65 continue;
66 if(wa.map_state == IsViewable)
67 manage(wins[i], &wa);
68 }
69 }
70 if(wins)
71 XFree(wins);
72 }
73
74 static int
75 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
76 {
77 Atom real;
78 int format;
79 unsigned long res, extra;
80 int status;
81
82 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
83 &res, &extra, prop);
84
85 if(status != Success || *prop == 0) {
86 return 0;
87 }
88 if(res == 0) {
89 free((void *) *prop);
90 }
91 return res;
92 }
93
94 int
95 win_proto(Window w)
96 {
97 unsigned char *protocols;
98 long res;
99 int protos = 0;
100 int i;
101
102 res = win_property(w, wm_atom[WMProtocols], XA_ATOM, 20L, &protocols);
103 if(res <= 0) {
104 return protos;
105 }
106 for(i = 0; i < res; i++) {
107 if(protocols[i] == wm_atom[WMDelete])
108 protos |= WM_PROTOCOL_DELWIN;
109 }
110 free((char *) protocols);
111 return protos;
112 }
113
114 void
115 send_message(Window w, Atom a, long value)
116 {
117 XEvent e;
118
119 e.type = ClientMessage;
120 e.xclient.window = w;
121 e.xclient.message_type = a;
122 e.xclient.format = 32;
123 e.xclient.data.l[0] = value;
124 e.xclient.data.l[1] = CurrentTime;
125 XSendEvent(dpy, w, False, NoEventMask, &e);
126 XFlush(dpy);
127 }
128
129 /*
130 * There's no way to check accesses to destroyed windows, thus
131 * those cases are ignored (especially on UnmapNotify's).
132 * Other types of errors call Xlib's default error handler, which
133 * calls exit().
134 */
135 int
136 error_handler(Display *dpy, XErrorEvent *error)
137 {
138 if(error->error_code == BadWindow
139 || (error->request_code == X_SetInputFocus
140 && error->error_code == BadMatch)
141 || (error->request_code == X_PolyText8
142 && error->error_code == BadDrawable)
143 || (error->request_code == X_PolyFillRectangle
144 && error->error_code == BadDrawable)
145 || (error->request_code == X_PolySegment
146 && error->error_code == BadDrawable)
147 || (error->request_code == X_ConfigureWindow
148 && error->error_code == BadMatch)
149 || (error->request_code == X_GrabKey
150 && error->error_code == BadAccess))
151 return 0;
152 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
153 error->request_code, error->error_code);
154 return x_error_handler(dpy, error); /* may call exit() */
155 }
156
157 /*
158 * Startup Error handler to check if another window manager
159 * is already running.
160 */
161 static int
162 startup_error_handler(Display *dpy, XErrorEvent *error)
163 {
164 other_wm_running = True;
165 return -1;
166 }
167
168 static void
169 cleanup()
170 {
171 while(sel) {
172 resize(sel);
173 unmanage(sel);
174 }
175 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
176 }
177
178 void
179 quit(Arg *arg)
180 {
181 running = False;
182 }
183
184 int
185 main(int argc, char *argv[])
186 {
187 int i;
188 XSetWindowAttributes wa;
189 unsigned int mask;
190 Window w;
191 XEvent ev;
192
193 /* command line args */
194 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
195 switch (argv[i][1]) {
196 case 'v':
197 fprintf(stdout, "%s", version);
198 exit(0);
199 break;
200 default:
201 usage();
202 break;
203 }
204 }
205
206 dpy = XOpenDisplay(0);
207 if(!dpy)
208 error("dwm: cannot connect X server\n");
209
210 screen = DefaultScreen(dpy);
211 root = RootWindow(dpy, screen);
212
213 /* check if another WM is already running */
214 other_wm_running = False;
215 XSetErrorHandler(startup_error_handler);
216 /* this causes an error if some other WM is running */
217 XSelectInput(dpy, root, SubstructureRedirectMask);
218 XFlush(dpy);
219
220 if(other_wm_running)
221 error("dwm: another window manager is already running\n");
222
223 sx = sy = 0;
224 sw = DisplayWidth(dpy, screen);
225 sh = DisplayHeight(dpy, screen);
226 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
227
228 XSetErrorHandler(0);
229 x_error_handler = XSetErrorHandler(error_handler);
230
231 /* init atoms */
232 wm_atom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
233 wm_atom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
234 net_atom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
235 net_atom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
236
237 XChangeProperty(dpy, root, net_atom[NetSupported], XA_ATOM, 32,
238 PropModeReplace, (unsigned char *) net_atom, NetLast);
239
240
241 /* init cursors */
242 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
243 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
244 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
245
246 update_keys();
247
248 /* style */
249 dc.bg = initcolor(BGCOLOR);
250 dc.fg = initcolor(FGCOLOR);
251 dc.border = initcolor(BORDERCOLOR);
252 initfont(FONT);
253
254 th = dc.font.height + 4;
255
256 dc.drawable = XCreatePixmap(dpy, root, sw, th, DefaultDepth(dpy, screen));
257 dc.gc = XCreateGC(dpy, root, 0, 0);
258
259 wa.event_mask = SubstructureRedirectMask | EnterWindowMask \
260 | LeaveWindowMask;
261 wa.cursor = cursor[CurNormal];
262 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
263
264 scan_wins();
265
266 while(running) {
267 XNextEvent(dpy, &ev);
268 if(handler[ev.type])
269 (handler[ev.type])(&ev); /* call handler */
270 }
271
272 cleanup();
273 XCloseDisplay(dpy);
274
275 return 0;
276 }