event.c

   1 /*
   2  * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
   3  * See LICENSE file for license details.
   4  */
   5
   6 #include <fcntl.h>
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9 #include <string.h>
  10 #include <X11/keysym.h>
  11 #include <X11/Xatom.h>
  12
  13 #include "dwm.h"
  14
  15 /* local functions */
  16 static void buttonpress(XEvent *e);
  17 static void configurerequest(XEvent *e);
  18 static void destroynotify(XEvent *e);
  19 static void enternotify(XEvent *e);
  20 static void leavenotify(XEvent *e);
  21 static void expose(XEvent *e);
  22 static void keymapnotify(XEvent *e);
  23 static void maprequest(XEvent *e);
  24 static void propertynotify(XEvent *e);
  25 static void unmapnotify(XEvent *e);
  26
  27 void (*handler[LASTEvent]) (XEvent *) = {
  28         [ButtonPress] = buttonpress,
  29         [ConfigureRequest] = configurerequest,
  30         [DestroyNotify] = destroynotify,
  31         [EnterNotify] = enternotify,
  32         [LeaveNotify] = leavenotify,
  33         [Expose] = expose,
  34         [KeyPress] = keypress,
  35         [KeymapNotify] = keymapnotify,
  36         [MapRequest] = maprequest,
  37         [PropertyNotify] = propertynotify,
  38         [UnmapNotify] = unmapnotify
  39 };
  40
  41 static void
  42 buttonpress(XEvent *e)
  43 {
  44         XButtonPressedEvent *ev = &e->xbutton;
  45         Client *c;
  46
  47         if(barwin == ev->window)
  48                 barclick(ev);
  49         else if((c = getclient(ev->window))) {
  50                 craise(c);
  51                 switch(ev->button) {
  52                 default:
  53                         break;
  54                 case Button1:
  55                         mmove(c);
  56                         break;
  57                 case Button2:
  58                         lower(c);
  59                         break;
  60                 case Button3:
  61                         mresize(c);
  62                         break;
  63                 }
  64         }
  65 }
  66
  67 static void
  68 configurerequest(XEvent *e)
  69 {
  70         XConfigureRequestEvent *ev = &e->xconfigurerequest;
  71         XWindowChanges wc;
  72         Client *c;
  73
  74         ev->value_mask &= ~CWSibling;
  75         if((c = getclient(ev->window))) {
  76                 gravitate(c, True);
  77                 if(ev->value_mask & CWX)
  78                         c->x = ev->x;
  79                 if(ev->value_mask & CWY)
  80                         c->y = ev->y;
  81                 if(ev->value_mask & CWWidth)
  82                         c->w = ev->width;
  83                 if(ev->value_mask & CWHeight)
  84                         c->h = ev->height;
  85                 if(ev->value_mask & CWBorderWidth)
  86                         c->border = 1;
  87                 gravitate(c, False);
  88                 resize(c, True);
  89         }
  90
  91         wc.x = ev->x;
  92         wc.y = ev->y;
  93         wc.width = ev->width;
  94         wc.height = ev->height;
  95         wc.border_width = 1;
  96         wc.sibling = None;
  97         wc.stack_mode = Above;
  98         ev->value_mask &= ~CWStackMode;
  99         ev->value_mask |= CWBorderWidth;
 100         XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 101         XFlush(dpy);
 102 }
 103
 104 static void
 105 destroynotify(XEvent *e)
 106 {
 107         Client *c;
 108         XDestroyWindowEvent *ev = &e->xdestroywindow;
 109
 110         if((c = getclient(ev->window)))
 111                 unmanage(c);
 112 }
 113
 114 static void
 115 enternotify(XEvent *e)
 116 {
 117         XCrossingEvent *ev = &e->xcrossing;
 118         Client *c;
 119
 120         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 121                 return;
 122
 123         if((c = getclient(ev->window)))
 124                 focus(c);
 125         else if(ev->window == root)
 126                 issel = True;
 127 }
 128
 129 static void
 130 leavenotify(XEvent *e)
 131 {
 132         XCrossingEvent *ev = &e->xcrossing;
 133
 134         if((ev->window == root) && !ev->same_screen)
 135                 issel = True;
 136 }
 137
 138 static void
 139 expose(XEvent *e)
 140 {
 141         XExposeEvent *ev = &e->xexpose;
 142         Client *c;
 143
 144         if(ev->count == 0) {
 145                 if(barwin == ev->window)
 146                         draw_bar();
 147                 else if((c = gettitle(ev->window)))
 148                         draw_client(c);
 149         }
 150 }
 151
 152 static void
 153 keymapnotify(XEvent *e)
 154 {
 155         update_keys();
 156 }
 157
 158 static void
 159 maprequest(XEvent *e)
 160 {
 161         XMapRequestEvent *ev = &e->xmaprequest;
 162         static XWindowAttributes wa;
 163
 164         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 165                 return;
 166
 167         if(wa.override_redirect) {
 168                 XSelectInput(dpy, ev->window,
 169                                 (StructureNotifyMask | PropertyChangeMask));
 170                 return;
 171         }
 172
 173         if(!getclient(ev->window))
 174                 manage(ev->window, &wa);
 175 }
 176
 177 static void
 178 propertynotify(XEvent *e)
 179 {
 180         XPropertyEvent *ev = &e->xproperty;
 181         Window trans;
 182         Client *c;
 183
 184         if(ev->state == PropertyDelete)
 185                 return; /* ignore */
 186
 187         if((c = getclient(ev->window))) {
 188                 if(ev->atom == wm_atom[WMProtocols]) {
 189                         c->proto = win_proto(c->win);
 190                         return;
 191                 }
 192                 switch (ev->atom) {
 193                         default: break;
 194                         case XA_WM_TRANSIENT_FOR:
 195                                 XGetTransientForHint(dpy, c->win, &trans);
 196                                 if(!c->floating && (c->floating = (trans != 0)))
 197                                         arrange(NULL);
 198                                 break;
 199                         case XA_WM_NORMAL_HINTS:
 200                                 update_size(c);
 201                                 break;
 202                 }
 203                 if(ev->atom == XA_WM_NAME || ev->atom == net_atom[NetWMName]) {
 204                         update_name(c);
 205                         draw_client(c);
 206                 }
 207         }
 208 }
 209
 210 static void
 211 unmapnotify(XEvent *e)
 212 {
 213         Client *c;
 214         XUnmapEvent *ev = &e->xunmap;
 215
 216         if((c = getclient(ev->window)))
 217                 unmanage(c);
 218 }