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 <stdlib.h>
   8 #include <string.h>
   9 #include <X11/keysym.h>
  10 #include <X11/Xatom.h>
  11
  12 #include "wm.h"
  13
  14 /* local functions */
  15 static void buttonpress(XEvent *e);
  16 static void configurerequest(XEvent *e);
  17 static void destroynotify(XEvent *e);
  18 static void enternotify(XEvent *e);
  19 static void leavenotify(XEvent *e);
  20 static void expose(XEvent *e);
  21 static void keymapnotify(XEvent *e);
  22 static void maprequest(XEvent *e);
  23 static void propertynotify(XEvent *e);
  24 static void unmapnotify(XEvent *e);
  25
  26 void (*handler[LASTEvent]) (XEvent *) = {
  27         [ButtonPress] = buttonpress,
  28         [ConfigureRequest] = configurerequest,
  29         [DestroyNotify] = destroynotify,
  30         [EnterNotify] = enternotify,
  31         [LeaveNotify] = leavenotify,
  32         [Expose] = expose,
  33         [KeyPress] = keypress,
  34         [KeymapNotify] = keymapnotify,
  35         [MapRequest] = maprequest,
  36         [PropertyNotify] = propertynotify,
  37         [UnmapNotify] = unmapnotify
  38 };
  39
  40 void
  41 discard_events(long even_mask)
  42 {
  43         XEvent ev;
  44         while(XCheckMaskEvent(dpy, even_mask, &ev));
  45 }
  46
  47 static void
  48 buttonpress(XEvent *e)
  49 {
  50         XButtonPressedEvent *ev = &e->xbutton;
  51         Client *c;
  52
  53         if((c = getclient(ev->window))) {
  54                 raise(c);
  55                 switch(ev->button) {
  56                 default:
  57                         break;
  58                 case Button1:
  59                         mmove(c);
  60                         break;
  61                 case Button2:
  62                         lower(c);
  63                         break;
  64                 case Button3:
  65                         mresize(c);
  66                         break;
  67                 }
  68         }
  69 }
  70
  71 static void
  72 configurerequest(XEvent *e)
  73 {
  74         XConfigureRequestEvent *ev = &e->xconfigurerequest;
  75         XWindowChanges wc;
  76         Client *c;
  77
  78         ev->value_mask &= ~CWSibling;
  79         if((c = getclient(ev->window))) {
  80                 gravitate(c, True);
  81                 if(ev->value_mask & CWX)
  82                         c->x = ev->x;
  83                 if(ev->value_mask & CWY)
  84                         c->y = ev->y;
  85                 if(ev->value_mask & CWWidth)
  86                         c->w = ev->width;
  87                 if(ev->value_mask & CWHeight)
  88                         c->h = ev->height;
  89                 if(ev->value_mask & CWBorderWidth)
  90                         c->border = ev->border_width;
  91                 gravitate(c, False);
  92         }
  93
  94         wc.x = ev->x;
  95         wc.y = ev->y;
  96         wc.width = ev->width;
  97         wc.height = ev->height;
  98         wc.border_width = 1;
  99         wc.sibling = None;
 100         wc.stack_mode = Above;
 101         ev->value_mask &= ~CWStackMode;
 102         ev->value_mask |= CWBorderWidth;
 103         XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 104         XFlush(dpy);
 105 }
 106
 107 static void
 108 destroynotify(XEvent *e)
 109 {
 110         Client *c;
 111         XDestroyWindowEvent *ev = &e->xdestroywindow;
 112
 113         if((c = getclient(ev->window)))
 114                 unmanage(c);
 115 }
 116
 117 static void
 118 enternotify(XEvent *e)
 119 {
 120         XCrossingEvent *ev = &e->xcrossing;
 121         Client *c;
 122
 123         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 124                 return;
 125
 126         if((c = getclient(ev->window)))
 127                 focus(c);
 128         else if(ev->window == root)
 129                 issel = True;
 130 }
 131
 132 static void
 133 leavenotify(XEvent *e)
 134 {
 135         XCrossingEvent *ev = &e->xcrossing;
 136
 137         if((ev->window == root) && !ev->same_screen)
 138                 issel = True;
 139 }
 140
 141 static void
 142 expose(XEvent *e)
 143 {
 144         XExposeEvent *ev = &e->xexpose;
 145         Client *c;
 146
 147         if(ev->count == 0) {
 148                 if((c = gettitle(ev->window)))
 149                         draw_client(c);
 150                 else if(ev->window == barwin)
 151                         draw_bar();
 152         }
 153 }
 154
 155 static void
 156 keymapnotify(XEvent *e)
 157 {
 158         update_keys();
 159 }
 160
 161 static void
 162 maprequest(XEvent *e)
 163 {
 164         XMapRequestEvent *ev = &e->xmaprequest;
 165         static XWindowAttributes wa;
 166
 167         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 168                 return;
 169
 170         if(wa.override_redirect) {
 171                 XSelectInput(dpy, ev->window,
 172                                 (StructureNotifyMask | PropertyChangeMask));
 173                 return;
 174         }
 175
 176         if(!getclient(ev->window))
 177                 manage(ev->window, &wa);
 178 }
 179
 180 static void
 181 propertynotify(XEvent *e)
 182 {
 183         XPropertyEvent *ev = &e->xproperty;
 184         Client *c;
 185
 186         if(ev->state == PropertyDelete)
 187                 return; /* ignore */
 188
 189         if((c = getclient(ev->window))) {
 190                 if(ev->atom == wm_atom[WMProtocols]) {
 191                         c->proto = win_proto(c->win);
 192                         return;
 193                 }
 194                 switch (ev->atom) {
 195                         default: break;
 196                         case XA_WM_TRANSIENT_FOR:
 197                                 XGetTransientForHint(dpy, c->win, &c->trans);
 198                                 break;
 199                                 update_size(c);
 200                         case XA_WM_NORMAL_HINTS:
 201                                 update_size(c);
 202                                 break;
 203                 }
 204                 if(ev->atom == XA_WM_NAME || ev->atom == net_atom[NetWMName]) {
 205                         update_name(c);
 206                         if(c == stack)
 207                                 draw_bar();
 208                         else
 209                                 draw_client(c);
 210                 }
 211         }
 212 }
 213
 214 static void
 215 unmapnotify(XEvent *e)
 216 {
 217         Client *c;
 218         XUnmapEvent *ev = &e->xunmap;
 219
 220         if((c = getclient(ev->window)))
 221                 unmanage(c);
 222 }