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annotate wm.c @ 2:a79188fe4a40

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added new stuff
author Anselm R. Garbe <garbeam@wmii.de>
date Mon, 10 Jul 2006 18:35:39 +0200
parents 491f34c11291
children e969f3575b7a
rev   line source
garbeam@0 1 /*
garbeam@0 2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
garbeam@0 3 * See LICENSE file for license details.
garbeam@0 4 */
garbeam@0 5
garbeam@0 6 #include <stdarg.h>
garbeam@0 7 #include <stdio.h>
garbeam@0 8 #include <stdlib.h>
garbeam@0 9
garbeam@0 10 #include <X11/cursorfont.h>
garbeam@0 11 #include <X11/Xatom.h>
garbeam@0 12 #include <X11/Xproto.h>
garbeam@0 13
garbeam@0 14 #include "wm.h"
garbeam@0 15
garbeam@0 16 Display *dpy;
garbeam@0 17 Window root;
garbeam@0 18 XRectangle rect;
garbeam@0 19 int screen, sel_screen;
garbeam@0 20 Atom wm_atom[WMLast];
garbeam@0 21 Atom net_atom[NetLast];
garbeam@0 22 Cursor cursor[CurLast];
garbeam@0 23 unsigned int kmask, numlock_mask;
garbeam@0 24 Pixmap pmap;
garbeam@0 25
garbeam@0 26 enum { WM_PROTOCOL_DELWIN = 1 };
garbeam@0 27
garbeam@0 28 static Bool other_wm_running;
garbeam@0 29 static int (*x_error_handler) (Display *, XErrorEvent *);
garbeam@0 30 static char version[] = "gridwm - " VERSION ", (C)opyright MMVI Anselm R. Garbe\n";
garbeam@0 31
garbeam@0 32 static void
garbeam@0 33 usage()
garbeam@0 34 {
garbeam@0 35 fputs("usage: gridwm [-v]\n", stderr);
garbeam@0 36 exit(1);
garbeam@0 37 }
garbeam@0 38
garbeam@0 39 static void
garbeam@0 40 scan_wins()
garbeam@0 41 {
garbeam@0 42 unsigned int i, num;
garbeam@0 43 Window *wins;
garbeam@0 44 XWindowAttributes wa;
garbeam@0 45 Window d1, d2;
garbeam@0 46
garbeam@0 47 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
garbeam@0 48 for(i = 0; i < num; i++) {
garbeam@0 49 if(!XGetWindowAttributes(dpy, wins[i], &wa))
garbeam@0 50 continue;
garbeam@0 51 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
garbeam@0 52 continue;
garbeam@0 53 if(wa.map_state == IsViewable)
garbeam@0 54 /*manage*/;
garbeam@0 55 }
garbeam@0 56 }
garbeam@0 57 if(wins)
garbeam@0 58 XFree(wins);
garbeam@0 59 }
garbeam@0 60
garbeam@0 61 static int
garbeam@0 62 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
garbeam@0 63 {
garbeam@0 64 Atom real;
garbeam@0 65 int format;
garbeam@0 66 unsigned long res, extra;
garbeam@0 67 int status;
garbeam@0 68
garbeam@0 69 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
garbeam@0 70 &res, &extra, prop);
garbeam@0 71
garbeam@0 72 if(status != Success || *prop == 0) {
garbeam@0 73 return 0;
garbeam@0 74 }
garbeam@0 75 if(res == 0) {
garbeam@0 76 free((void *) *prop);
garbeam@0 77 }
garbeam@0 78 return res;
garbeam@0 79 }
garbeam@0 80
garbeam@0 81 int
garbeam@0 82 win_proto(Window w)
garbeam@0 83 {
garbeam@0 84 Atom *protocols;
garbeam@0 85 long res;
garbeam@0 86 int protos = 0;
garbeam@0 87 int i;
garbeam@0 88
garbeam@0 89 res = win_property(w, wm_atom[WMProtocols], XA_ATOM, 20L,
garbeam@0 90 ((unsigned char **) &protocols));
garbeam@0 91 if(res <= 0) {
garbeam@0 92 return protos;
garbeam@0 93 }
garbeam@0 94 for(i = 0; i < res; i++) {
garbeam@0 95 if(protocols[i] == wm_atom[WMDelete])
garbeam@0 96 protos |= WM_PROTOCOL_DELWIN;
garbeam@0 97 }
garbeam@0 98 free((char *) protocols);
garbeam@0 99 return protos;
garbeam@0 100 }
garbeam@0 101
garbeam@0 102 /*
garbeam@0 103 * There's no way to check accesses to destroyed windows, thus
garbeam@0 104 * those cases are ignored (especially on UnmapNotify's).
garbeam@0 105 * Other types of errors call Xlib's default error handler, which
garbeam@0 106 * calls exit().
garbeam@0 107 */
garbeam@0 108 static int
garbeam@0 109 error_handler(Display *dpy, XErrorEvent *error)
garbeam@0 110 {
garbeam@0 111 if(error->error_code == BadWindow
garbeam@0 112 || (error->request_code == X_SetInputFocus
garbeam@0 113 && error->error_code == BadMatch)
garbeam@0 114 || (error->request_code == X_PolyText8
garbeam@0 115 && error->error_code == BadDrawable)
garbeam@0 116 || (error->request_code == X_PolyFillRectangle
garbeam@0 117 && error->error_code == BadDrawable)
garbeam@0 118 || (error->request_code == X_PolySegment
garbeam@0 119 && error->error_code == BadDrawable)
garbeam@0 120 || (error->request_code == X_ConfigureWindow
garbeam@0 121 && error->error_code == BadMatch)
garbeam@0 122 || (error->request_code == X_GrabKey
garbeam@0 123 && error->error_code == BadAccess))
garbeam@0 124 return 0;
garbeam@0 125 fprintf(stderr, "gridwm: fatal error: request code=%d, error code=%d\n",
garbeam@0 126 error->request_code, error->error_code);
garbeam@0 127 return x_error_handler(dpy, error); /* may call exit() */
garbeam@0 128 }
garbeam@0 129
garbeam@0 130 /*
garbeam@0 131 * Startup Error handler to check if another window manager
garbeam@0 132 * is already running.
garbeam@0 133 */
garbeam@0 134 static int
garbeam@0 135 startup_error_handler(Display *dpy, XErrorEvent *error)
garbeam@0 136 {
garbeam@0 137 other_wm_running = True;
garbeam@0 138 return -1;
garbeam@0 139 }
garbeam@0 140
garbeam@0 141 static void
garbeam@0 142 init_lock_keys()
garbeam@0 143 {
garbeam@0 144 XModifierKeymap *modmap;
garbeam@0 145 KeyCode numlock;
garbeam@0 146 int i;
garbeam@0 147 static int masks[] = {
garbeam@0 148 ShiftMask, LockMask, ControlMask, Mod1Mask,
garbeam@0 149 Mod2Mask, Mod3Mask, Mod4Mask, Mod5Mask
garbeam@0 150 };
garbeam@0 151
garbeam@0 152 numlock_mask = 0;
garbeam@0 153 modmap = XGetModifierMapping(dpy);
garbeam@0 154 numlock = XKeysymToKeycode(dpy, XStringToKeysym("Num_Lock"));
garbeam@0 155
garbeam@0 156 if(modmap && modmap->max_keypermod > 0) {
garbeam@0 157 int max = (sizeof(masks) / sizeof(int)) * modmap->max_keypermod;
garbeam@0 158 for(i = 0; i < max; i++)
garbeam@0 159 if(numlock && (modmap->modifiermap[i] == numlock))
garbeam@0 160 numlock_mask = masks[i / modmap->max_keypermod];
garbeam@0 161 }
garbeam@0 162 XFreeModifiermap(modmap);
garbeam@0 163
garbeam@0 164 kmask = 255 & ~(numlock_mask | LockMask);
garbeam@0 165 }
garbeam@0 166
garbeam@0 167 static void
garbeam@0 168 cleanup()
garbeam@0 169 {
garbeam@0 170 /*
garbeam@0 171 Client *c;
garbeam@0 172 for(c=client; c; c=c->next)
garbeam@0 173 reparent_client(c, root, c->sel->rect.x, c->sel->rect.y);
garbeam@0 174 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
garbeam@0 175 */
garbeam@0 176 }
garbeam@0 177
garbeam@0 178 int
garbeam@0 179 main(int argc, char *argv[])
garbeam@0 180 {
garbeam@0 181 int i;
garbeam@0 182 XSetWindowAttributes wa;
garbeam@0 183 unsigned int mask;
garbeam@0 184 Window w;
garbeam@0 185
garbeam@0 186 /* command line args */
garbeam@0 187 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
garbeam@0 188 switch (argv[i][1]) {
garbeam@0 189 case 'v':
garbeam@0 190 fprintf(stdout, "%s", version);
garbeam@0 191 exit(0);
garbeam@0 192 break;
garbeam@0 193 default:
garbeam@0 194 usage();
garbeam@0 195 break;
garbeam@0 196 }
garbeam@0 197 }
garbeam@0 198
garbeam@0 199 dpy = XOpenDisplay(0);
garbeam@0 200 if(!dpy)
garbeam@0 201 error("gridwm: cannot connect X server\n");
garbeam@0 202
garbeam@0 203 screen = DefaultScreen(dpy);
garbeam@0 204 root = RootWindow(dpy, screen);
garbeam@0 205
garbeam@0 206 /* check if another WM is already running */
garbeam@0 207 other_wm_running = False;
garbeam@0 208 XSetErrorHandler(startup_error_handler);
garbeam@0 209 /* this causes an error if some other WM is running */
garbeam@0 210 XSelectInput(dpy, root, SubstructureRedirectMask);
garbeam@0 211 XSync(dpy, False);
garbeam@0 212
garbeam@0 213 if(other_wm_running)
garbeam@0 214 error("gridwm: another window manager is already running\n");
garbeam@0 215
garbeam@0 216 rect.x = rect.y = 0;
garbeam@0 217 rect.width = DisplayWidth(dpy, screen);
garbeam@0 218 rect.height = DisplayHeight(dpy, screen);
garbeam@0 219 sel_screen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
garbeam@0 220
garbeam@0 221 XSetErrorHandler(0);
garbeam@0 222 x_error_handler = XSetErrorHandler(error_handler);
garbeam@0 223
garbeam@0 224 /* init atoms */
garbeam@0 225 wm_atom[WMState] = XInternAtom(dpy, "WM_STATE", False);
garbeam@0 226 wm_atom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
garbeam@0 227 wm_atom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
garbeam@0 228 net_atom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
garbeam@0 229 net_atom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
garbeam@0 230
garbeam@0 231 XChangeProperty(dpy, root, net_atom[NetSupported], XA_ATOM, 32,
garbeam@0 232 PropModeReplace, (unsigned char *) net_atom, NetLast);
garbeam@0 233
garbeam@0 234
garbeam@0 235 /* init cursors */
garbeam@0 236 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
garbeam@0 237 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
garbeam@0 238 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
garbeam@0 239
garbeam@0 240 init_lock_keys();
garbeam@0 241
garbeam@0 242 pmap = XCreatePixmap(dpy, root, rect.width, rect.height,
garbeam@0 243 DefaultDepth(dpy, screen));
garbeam@0 244
garbeam@0 245 wa.event_mask = SubstructureRedirectMask | EnterWindowMask | LeaveWindowMask;
garbeam@0 246 wa.cursor = cursor[CurNormal];
garbeam@0 247 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
garbeam@0 248
garbeam@0 249 scan_wins();
garbeam@0 250
garbeam@0 251 cleanup();
garbeam@0 252 XCloseDisplay(dpy);
garbeam@0 253
garbeam@0 254 return 0;
garbeam@0 255 }