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