dwm-meillo

view wm.c @ 12:a2b399582afe

find changesets by author, revision, files, or words in the commit message
new stuff
author Anselm R. Garbe <garbeam@wmii.de>
date Tue, 11 Jul 2006 14:53:22 +0200
parents d567f430a81d
children 5cc5e55a132d
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 "wm.h"
15
16 /* X structs */
17 Display *dpy;
18 Window root, barwin;
19 Atom net_atom[NetLast];
20 Cursor cursor[CurLast];
21 XRectangle rect, barrect;
22 Bool running = True;
23
24 char *bartext, tag[256];
25 int screen, sel_screen;
26
27 Brush brush = {0};
28 Client *clients = NULL;
29
30 enum { WM_PROTOCOL_DELWIN = 1 };
31
32 static Bool other_wm_running;
33 static char version[] = "gridwm - " VERSION ", (C)opyright MMVI Anselm R. Garbe\n";
34 static int (*x_error_handler) (Display *, XErrorEvent *);
35
36 static void
37 usage()
38 {
39 fputs("usage: gridwm [-v]\n", stderr);
40 exit(1);
41 }
42
43 static void
44 scan_wins()
45 {
46 unsigned int i, num;
47 Window *wins;
48 XWindowAttributes wa;
49 Window d1, d2;
50
51 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
52 for(i = 0; i < num; i++) {
53 if(!XGetWindowAttributes(dpy, wins[i], &wa))
54 continue;
55 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
56 continue;
57 if(wa.map_state == IsViewable)
58 manage(wins[i], &wa);
59 }
60 }
61 if(wins)
62 XFree(wins);
63 }
64
65 /*
66 * There's no way to check accesses to destroyed windows, thus
67 * those cases are ignored (especially on UnmapNotify's).
68 * Other types of errors call Xlib's default error handler, which
69 * calls exit().
70 */
71 int
72 error_handler(Display *dpy, XErrorEvent *error)
73 {
74 if(error->error_code == BadWindow
75 || (error->request_code == X_SetInputFocus
76 && error->error_code == BadMatch)
77 || (error->request_code == X_PolyText8
78 && error->error_code == BadDrawable)
79 || (error->request_code == X_PolyFillRectangle
80 && error->error_code == BadDrawable)
81 || (error->request_code == X_PolySegment
82 && error->error_code == BadDrawable)
83 || (error->request_code == X_ConfigureWindow
84 && error->error_code == BadMatch)
85 || (error->request_code == X_GrabKey
86 && error->error_code == BadAccess))
87 return 0;
88 fprintf(stderr, "gridwm: fatal error: request code=%d, error code=%d\n",
89 error->request_code, error->error_code);
90 return x_error_handler(dpy, error); /* may call exit() */
91 }
92
93 /*
94 * Startup Error handler to check if another window manager
95 * is already running.
96 */
97 static int
98 startup_error_handler(Display *dpy, XErrorEvent *error)
99 {
100 other_wm_running = True;
101 return -1;
102 }
103
104 static void
105 cleanup()
106 {
107 /*
108 Client *c;
109 for(c=client; c; c=c->next)
110 reparent_client(c, root, c->sel->rect.x, c->sel->rect.y);
111 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
112 */
113 }
114
115 int
116 main(int argc, char *argv[])
117 {
118 int i;
119 XSetWindowAttributes wa;
120 unsigned int mask;
121 Window w;
122 XEvent ev;
123
124 /* command line args */
125 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
126 switch (argv[i][1]) {
127 case 'v':
128 fprintf(stdout, "%s", version);
129 exit(0);
130 break;
131 default:
132 usage();
133 break;
134 }
135 }
136
137 dpy = XOpenDisplay(0);
138 if(!dpy)
139 error("gridwm: cannot connect X server\n");
140
141 screen = DefaultScreen(dpy);
142 root = RootWindow(dpy, screen);
143
144 /* check if another WM is already running */
145 other_wm_running = False;
146 XSetErrorHandler(startup_error_handler);
147 /* this causes an error if some other WM is running */
148 XSelectInput(dpy, root, SubstructureRedirectMask);
149 XFlush(dpy);
150
151 if(other_wm_running)
152 error("gridwm: another window manager is already running\n");
153
154 rect.x = rect.y = 0;
155 rect.width = DisplayWidth(dpy, screen);
156 rect.height = DisplayHeight(dpy, screen);
157 sel_screen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
158
159 XSetErrorHandler(0);
160 x_error_handler = XSetErrorHandler(error_handler);
161
162 /* init atoms */
163 net_atom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
164 net_atom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
165
166 XChangeProperty(dpy, root, net_atom[NetSupported], XA_ATOM, 32,
167 PropModeReplace, (unsigned char *) net_atom, NetLast);
168
169
170 /* init cursors */
171 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
172 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
173 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
174
175 update_keys();
176
177 brush.drawable = XCreatePixmap(dpy, root, rect.width, rect.height,
178 DefaultDepth(dpy, screen));
179 brush.gc = XCreateGC(dpy, root, 0, 0);
180
181 /* style */
182 loadcolors(dpy, screen, &brush, BGCOLOR, FGCOLOR, BORDERCOLOR);
183 loadfont(dpy, &brush.font, FONT);
184
185 wa.override_redirect = 1;
186 wa.background_pixmap = ParentRelative;
187 wa.event_mask = ExposureMask;
188
189 barrect = rect;
190 barrect.height = labelheight(&brush.font);
191 barrect.y = rect.height - barrect.height;
192 barwin = XCreateWindow(dpy, root, barrect.x, barrect.y,
193 barrect.width, barrect.height, 0, DefaultDepth(dpy, screen),
194 CopyFromParent, DefaultVisual(dpy, screen),
195 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
196 bartext = NULL;
197 XDefineCursor(dpy, barwin, cursor[CurNormal]);
198 XMapRaised(dpy, barwin);
199 draw_bar();
200
201 wa.event_mask = SubstructureRedirectMask | EnterWindowMask \
202 | LeaveWindowMask;
203 wa.cursor = cursor[CurNormal];
204 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
205
206 scan_wins();
207
208 while(running) {
209 XNextEvent(dpy, &ev);
210 if(handler[ev.type])
211 (handler[ev.type]) (&ev); /* call handler */
212 }
213
214 cleanup();
215 XCloseDisplay(dpy);
216
217 return 0;
218 }