Mercurial > dwm-meillo
annotate main.c @ 455:4e3e22673073
fixed some other comments, now also the code side seems to be at a level to be reviewed by experienced programmers
| author | Anselm R. Garbe <arg@10kloc.org> |
|---|---|
| date | Mon, 11 Sep 2006 11:28:28 +0200 |
| parents | a2e587651c79 |
| children | 81fcd7ddafee |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com> | |
| 3 * See LICENSE file for license details. | |
| 4 */ | |
| 5 | |
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6 #include "dwm.h" |
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7 #include <errno.h> |
| 0 | 8 #include <stdio.h> |
| 9 #include <stdlib.h> | |
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10 #include <string.h> |
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11 #include <unistd.h> |
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12 #include <sys/select.h> |
| 0 | 13 #include <X11/cursorfont.h> |
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14 #include <X11/keysym.h> |
| 0 | 15 #include <X11/Xatom.h> |
| 16 #include <X11/Xproto.h> | |
| 17 | |
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18 /* extern */ |
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19 |
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20 char stext[1024]; |
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21 Bool *seltag; |
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22 int bx, by, bw, bh, bmw, mw, screen, sx, sy, sw, sh; |
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23 unsigned int ntags, numlockmask; |
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24 Atom wmatom[WMLast], netatom[NetLast]; |
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25 Bool running = True; |
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26 Bool issel = True; |
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27 Bool maximized = False; |
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28 Client *clients = NULL; |
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29 Client *sel = NULL; |
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30 Client *stack = NULL; |
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31 Cursor cursor[CurLast]; |
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32 Display *dpy; |
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33 DC dc = {0}; |
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34 Window root, barwin; |
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35 |
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36 /* static */ |
| 0 | 37 |
| 123 | 38 static int (*xerrorxlib)(Display *, XErrorEvent *); |
| 302 | 39 static Bool otherwm, readin; |
| 0 | 40 |
| 41 static void | |
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42 cleanup() |
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43 { |
| 302 | 44 close(STDIN_FILENO); |
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45 while(sel) { |
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46 resize(sel, True, TopLeft); |
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47 unmanage(sel); |
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48 } |
| 295 | 49 if(dc.font.set) |
| 50 XFreeFontSet(dpy, dc.font.set); | |
| 51 else | |
| 52 XFreeFont(dpy, dc.font.xfont); | |
| 292 | 53 XUngrabKey(dpy, AnyKey, AnyModifier, root); |
| 295 | 54 XFreePixmap(dpy, dc.drawable); |
| 55 XFreeGC(dpy, dc.gc); | |
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56 XDestroyWindow(dpy, barwin); |
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57 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime); |
| 292 | 58 XSync(dpy, False); |
| 433 | 59 free(seltag); |
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60 } |
| 0 | 61 |
| 62 static void | |
| 75 | 63 scan() |
| 0 | 64 { |
| 65 unsigned int i, num; | |
| 123 | 66 Window *wins, d1, d2; |
| 0 | 67 XWindowAttributes wa; |
| 68 | |
| 292 | 69 wins = NULL; |
| 0 | 70 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) { |
| 71 for(i = 0; i < num; i++) { | |
| 72 if(!XGetWindowAttributes(dpy, wins[i], &wa)) | |
| 73 continue; | |
| 74 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1)) | |
| 75 continue; | |
| 76 if(wa.map_state == IsViewable) | |
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77 manage(wins[i], &wa); |
| 0 | 78 } |
| 79 } | |
| 80 if(wins) | |
| 81 XFree(wins); | |
| 82 } | |
| 83 | |
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84 static void |
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85 setup() |
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86 { |
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87 int i, j; |
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88 unsigned int mask; |
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89 Window w; |
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90 XModifierKeymap *modmap; |
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91 XSetWindowAttributes wa; |
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92 |
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93 /* init atoms */ |
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94 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False); |
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95 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False); |
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96 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False); |
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97 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False); |
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98 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32, |
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99 PropModeReplace, (unsigned char *) netatom, NetLast); |
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100 |
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101 /* init cursors */ |
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102 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr); |
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103 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing); |
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104 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur); |
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105 |
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106 modmap = XGetModifierMapping(dpy); |
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107 for (i = 0; i < 8; i++) { |
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108 for (j = 0; j < modmap->max_keypermod; j++) { |
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109 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock)) |
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110 numlockmask = (1 << i); |
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111 } |
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112 } |
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113 XFree(modmap); |
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114 |
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115 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask | EnterWindowMask | LeaveWindowMask; |
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116 wa.cursor = cursor[CurNormal]; |
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117 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa); |
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118 |
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119 grabkeys(); |
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120 initrregs(); |
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121 |
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122 for(ntags = 0; tags[ntags]; ntags++); |
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123 seltag = emallocz(sizeof(Bool) * ntags); |
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124 seltag[0] = True; |
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125 |
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126 /* style */ |
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127 dc.norm[ColBG] = getcolor(NORMBGCOLOR); |
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128 dc.norm[ColFG] = getcolor(NORMFGCOLOR); |
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129 dc.sel[ColBG] = getcolor(SELBGCOLOR); |
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130 dc.sel[ColFG] = getcolor(SELFGCOLOR); |
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131 dc.status[ColBG] = getcolor(STATUSBGCOLOR); |
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132 dc.status[ColFG] = getcolor(STATUSFGCOLOR); |
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133 setfont(FONT); |
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134 |
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135 bmw = textw(FLOATSYMBOL) > textw(TILESYMBOL) ? textw(FLOATSYMBOL) : textw(TILESYMBOL); |
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136 sx = sy = 0; |
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137 sw = DisplayWidth(dpy, screen); |
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138 sh = DisplayHeight(dpy, screen); |
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139 mw = (sw * MASTERW) / 100; |
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140 |
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141 bx = by = 0; |
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142 bw = sw; |
|
353
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143 dc.h = bh = dc.font.height + 2; |
|
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144 wa.override_redirect = 1; |
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145 wa.background_pixmap = ParentRelative; |
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146 wa.event_mask = ButtonPressMask | ExposureMask; |
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147 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen), |
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148 CopyFromParent, DefaultVisual(dpy, screen), |
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149 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa); |
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150 XDefineCursor(dpy, barwin, cursor[CurNormal]); |
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151 XMapRaised(dpy, barwin); |
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152 |
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153 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen)); |
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154 dc.gc = XCreateGC(dpy, root, 0, 0); |
|
344
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155 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter); |
|
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156 |
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157 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask); |
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158 strcpy(stext, "dwm-"VERSION); |
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159 } |
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160 |
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161 /* |
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162 * Startup Error handler to check if another window manager |
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163 * is already running. |
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164 */ |
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165 static int |
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166 xerrorstart(Display *dsply, XErrorEvent *ee) |
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167 { |
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168 otherwm = True; |
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169 return -1; |
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170 } |
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171 |
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172 /* extern */ |
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173 |
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174 int |
| 75 | 175 getproto(Window w) |
|
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176 { |
| 329 | 177 int i, format, protos, status; |
|
328
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178 unsigned long extra, res; |
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179 Atom *protocols, real; |
|
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180 |
| 329 | 181 protos = 0; |
| 182 status = XGetWindowProperty(dpy, w, wmatom[WMProtocols], 0L, 20L, False, | |
| 183 XA_ATOM, &real, &format, &res, &extra, (unsigned char **)&protocols); | |
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184 if(status != Success || protocols == 0) |
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185 return protos; |
| 329 | 186 for(i = 0; i < res; i++) |
| 77 | 187 if(protocols[i] == wmatom[WMDelete]) |
|
157
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188 protos |= PROTODELWIN; |
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189 free(protocols); |
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190 return protos; |
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191 } |
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192 |
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193 void |
| 74 | 194 sendevent(Window w, Atom a, long value) |
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195 { |
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196 XEvent e; |
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197 |
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198 e.type = ClientMessage; |
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199 e.xclient.window = w; |
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200 e.xclient.message_type = a; |
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201 e.xclient.format = 32; |
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202 e.xclient.data.l[0] = value; |
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203 e.xclient.data.l[1] = CurrentTime; |
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204 XSendEvent(dpy, w, False, NoEventMask, &e); |
|
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205 XSync(dpy, False); |
|
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206 } |
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207 |
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208 void |
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209 quit(Arg *arg) |
| 75 | 210 { |
| 302 | 211 readin = running = False; |
| 75 | 212 } |
| 213 | |
| 214 /* | |
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215 * There's no way to check accesses to destroyed windows, thus those cases are |
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216 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs |
|
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217 * default error handler, which may call exit. |
| 0 | 218 */ |
|
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219 int |
| 75 | 220 xerror(Display *dpy, XErrorEvent *ee) |
| 0 | 221 { |
| 75 | 222 if(ee->error_code == BadWindow |
| 123 | 223 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch) |
| 224 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable) | |
| 225 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable) | |
| 226 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable) | |
| 227 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch) | |
| 228 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)) | |
| 0 | 229 return 0; |
| 34 | 230 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n", |
| 123 | 231 ee->request_code, ee->error_code); |
|
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232 return xerrorxlib(dpy, ee); /* may call exit */ |
|
27
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233 } |
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234 |
| 0 | 235 int |
| 236 main(int argc, char *argv[]) | |
| 237 { | |
|
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238 int r, xfd; |
|
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239 fd_set rd; |
| 0 | 240 |
|
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241 if(argc == 2 && !strncmp("-v", argv[1], 3)) { |
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242 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout); |
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243 exit(EXIT_SUCCESS); |
| 0 | 244 } |
|
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245 else if(argc != 1) |
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246 eprint("usage: dwm [-v]\n"); |
| 0 | 247 |
| 248 dpy = XOpenDisplay(0); | |
| 249 if(!dpy) | |
| 197 | 250 eprint("dwm: cannot open display\n"); |
| 0 | 251 |
|
265
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252 xfd = ConnectionNumber(dpy); |
| 0 | 253 screen = DefaultScreen(dpy); |
| 254 root = RootWindow(dpy, screen); | |
| 255 | |
| 75 | 256 otherwm = False; |
| 257 XSetErrorHandler(xerrorstart); | |
| 197 | 258 /* this causes an error if some other window manager is running */ |
| 0 | 259 XSelectInput(dpy, root, SubstructureRedirectMask); |
|
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260 XSync(dpy, False); |
| 0 | 261 |
| 75 | 262 if(otherwm) |
| 263 eprint("dwm: another window manager is already running\n"); | |
| 0 | 264 |
| 292 | 265 XSync(dpy, False); |
|
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266 XSetErrorHandler(NULL); |
| 75 | 267 xerrorxlib = XSetErrorHandler(xerror); |
| 275 | 268 XSync(dpy, False); |
| 0 | 269 |
|
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270 setup(); |
| 74 | 271 drawstatus(); |
| 75 | 272 scan(); |
|
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273 |
| 214 | 274 /* main event loop, also reads status text from stdin */ |
| 242 | 275 XSync(dpy, False); |
| 292 | 276 procevent(); |
| 302 | 277 readin = True; |
| 5 | 278 while(running) { |
|
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279 FD_ZERO(&rd); |
|
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280 if(readin) |
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281 FD_SET(STDIN_FILENO, &rd); |
|
265
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282 FD_SET(xfd, &rd); |
|
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283 r = select(xfd + 1, &rd, NULL, NULL, NULL); |
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284 if((r == -1) && (errno == EINTR)) |
|
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285 continue; |
|
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286 if(r > 0) { |
|
164
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287 if(readin && FD_ISSET(STDIN_FILENO, &rd)) { |
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288 readin = NULL != fgets(stext, sizeof(stext), stdin); |
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289 if(readin) |
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290 stext[strlen(stext) - 1] = 0; |
|
162
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291 else |
|
164
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292 strcpy(stext, "broken pipe"); |
| 74 | 293 drawstatus(); |
|
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294 } |
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295 } |
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333
827f8f6c9e97
separated setup stuff into main.c:setup() - this makes main() more readable
Anselm R. Garbe <arg@10kloc.org>
parents:
329
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296 else if(r < 0) |
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316
d69cdb180a3e
small changes to dwm.1, rearranged order within main event loop
Anselm R.Garbe <arg@10ksloc.org>
parents:
309
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297 eprint("select failed\n"); |
| 293 | 298 procevent(); |
| 5 | 299 } |
| 0 | 300 cleanup(); |
| 301 XCloseDisplay(dpy); | |
| 302 | |
| 303 return 0; | |
| 304 } |