dwm-meillo
view wm.c @ 8:7066ff2fe8bc
added key handling
| author | Anselm R. Garbe <garbeam@wmii.de> |
|---|---|
| date | Tue, 11 Jul 2006 11:50:18 +0200 |
| parents | 49e2fc9fb94f |
| children | d567f430a81d |
line source
1 /*
2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
3 * See LICENSE file for license details.
4 */
6 #include <stdarg.h>
7 #include <stdio.h>
8 #include <stdlib.h>
10 #include <X11/cursorfont.h>
11 #include <X11/Xatom.h>
12 #include <X11/Xproto.h>
14 #include "wm.h"
16 /* X structs */
17 Display *dpy;
18 Window root, barwin;
19 Atom wm_atom[WMLast], net_atom[NetLast];
20 Cursor cursor[CurLast];
21 XRectangle rect, barrect;
22 Bool running = True;
23 Client *client = NULL;
25 char *bartext, tag[256];
26 int screen, sel_screen;
28 /* draw structs */
29 Brush brush = {0};
31 enum { WM_PROTOCOL_DELWIN = 1 };
33 static Bool other_wm_running;
34 static int (*x_error_handler) (Display *, XErrorEvent *);
35 static char version[] = "gridwm - " VERSION ", (C)opyright MMVI Anselm R. Garbe\n";
37 static void
38 usage()
39 {
40 fputs("usage: gridwm [-v]\n", stderr);
41 exit(1);
42 }
44 static void
45 scan_wins()
46 {
47 unsigned int i, num;
48 Window *wins;
49 XWindowAttributes wa;
50 Window d1, d2;
52 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
53 for(i = 0; i < num; i++) {
54 if(!XGetWindowAttributes(dpy, wins[i], &wa))
55 continue;
56 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
57 continue;
58 if(wa.map_state == IsViewable)
59 manage(create_client(wins[i], &wa));
60 }
61 }
62 if(wins)
63 XFree(wins);
64 }
66 static int
67 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
68 {
69 Atom real;
70 int format;
71 unsigned long res, extra;
72 int status;
74 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
75 &res, &extra, prop);
77 if(status != Success || *prop == NULL) {
78 return 0;
79 }
80 if(res == 0)
81 free((void *) *prop);
82 return res;
83 }
85 int
86 win_proto(Window w)
87 {
88 Atom *protocols;
89 long res;
90 int protos = 0;
91 int i;
93 res = win_property(w, wm_atom[WMProtocols], XA_ATOM, 20L,
94 ((unsigned char **) &protocols));
95 if(res <= 0) {
96 return protos;
97 }
98 for(i = 0; i < res; i++) {
99 if(protocols[i] == wm_atom[WMDelete])
100 protos |= WM_PROTOCOL_DELWIN;
101 }
102 free((char *) protocols);
103 return protos;
104 }
106 /*
107 * There's no way to check accesses to destroyed windows, thus
108 * those cases are ignored (especially on UnmapNotify's).
109 * Other types of errors call Xlib's default error handler, which
110 * calls exit().
111 */
112 static int
113 error_handler(Display *dpy, XErrorEvent *error)
114 {
115 if(error->error_code == BadWindow
116 || (error->request_code == X_SetInputFocus
117 && error->error_code == BadMatch)
118 || (error->request_code == X_PolyText8
119 && error->error_code == BadDrawable)
120 || (error->request_code == X_PolyFillRectangle
121 && error->error_code == BadDrawable)
122 || (error->request_code == X_PolySegment
123 && error->error_code == BadDrawable)
124 || (error->request_code == X_ConfigureWindow
125 && error->error_code == BadMatch)
126 || (error->request_code == X_GrabKey
127 && error->error_code == BadAccess))
128 return 0;
129 fprintf(stderr, "gridwm: fatal error: request code=%d, error code=%d\n",
130 error->request_code, error->error_code);
131 return x_error_handler(dpy, error); /* may call exit() */
132 }
134 /*
135 * Startup Error handler to check if another window manager
136 * is already running.
137 */
138 static int
139 startup_error_handler(Display *dpy, XErrorEvent *error)
140 {
141 other_wm_running = True;
142 return -1;
143 }
145 static void
146 cleanup()
147 {
148 /*
149 Client *c;
150 for(c=client; c; c=c->next)
151 reparent_client(c, root, c->sel->rect.x, c->sel->rect.y);
152 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
153 */
154 }
156 int
157 main(int argc, char *argv[])
158 {
159 int i;
160 XSetWindowAttributes wa;
161 unsigned int mask;
162 Window w;
163 XEvent ev;
165 /* command line args */
166 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
167 switch (argv[i][1]) {
168 case 'v':
169 fprintf(stdout, "%s", version);
170 exit(0);
171 break;
172 default:
173 usage();
174 break;
175 }
176 }
178 dpy = XOpenDisplay(0);
179 if(!dpy)
180 error("gridwm: cannot connect X server\n");
182 screen = DefaultScreen(dpy);
183 root = RootWindow(dpy, screen);
185 /* check if another WM is already running */
186 other_wm_running = False;
187 XSetErrorHandler(startup_error_handler);
188 /* this causes an error if some other WM is running */
189 XSelectInput(dpy, root, SubstructureRedirectMask);
190 XFlush(dpy);
192 if(other_wm_running)
193 error("gridwm: another window manager is already running\n");
195 rect.x = rect.y = 0;
196 rect.width = DisplayWidth(dpy, screen);
197 rect.height = DisplayHeight(dpy, screen);
198 sel_screen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
200 XSetErrorHandler(0);
201 x_error_handler = XSetErrorHandler(error_handler);
203 /* init atoms */
204 wm_atom[WMState] = XInternAtom(dpy, "WM_STATE", False);
205 wm_atom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
206 wm_atom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
207 net_atom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
208 net_atom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
210 XChangeProperty(dpy, root, net_atom[NetSupported], XA_ATOM, 32,
211 PropModeReplace, (unsigned char *) net_atom, NetLast);
214 /* init cursors */
215 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
216 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
217 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
219 update_keys();
221 brush.drawable = XCreatePixmap(dpy, root, rect.width, rect.height,
222 DefaultDepth(dpy, screen));
223 brush.gc = XCreateGC(dpy, root, 0, 0);
225 /* style */
226 loadcolors(dpy, screen, &brush, BGCOLOR, FGCOLOR, BORDERCOLOR);
227 loadfont(dpy, &brush.font, FONT);
229 wa.override_redirect = 1;
230 wa.background_pixmap = ParentRelative;
231 wa.event_mask = ExposureMask;
233 barrect = rect;
234 barrect.height = labelheight(&brush.font);
235 barrect.y = rect.height - barrect.height;
236 barwin = XCreateWindow(dpy, root, barrect.x, barrect.y,
237 barrect.width, barrect.height, 0, DefaultDepth(dpy, screen),
238 CopyFromParent, DefaultVisual(dpy, screen),
239 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
240 bartext = NULL;
241 XDefineCursor(dpy, barwin, cursor[CurNormal]);
242 XMapRaised(dpy, barwin);
243 draw_bar();
245 wa.event_mask = SubstructureRedirectMask | EnterWindowMask | LeaveWindowMask;
246 wa.cursor = cursor[CurNormal];
247 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
249 scan_wins();
251 while(running) {
252 XNextEvent(dpy, &ev);
253 if(handler[ev.type])
254 (handler[ev.type]) (&ev); /* call handler */
255 }
257 cleanup();
258 XCloseDisplay(dpy);
260 return 0;
261 }