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 "dwm.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(barwin == ev->window)
  54                 barclick(ev);
  55         else if((c = getclient(ev->window))) {
  56                 craise(c);
  57                 switch(ev->button) {
  58                 default:
  59                         break;
  60                 case Button1:
  61                         mmove(c);
  62                         break;
  63                 case Button2:
  64                         lower(c);
  65                         break;
  66                 case Button3:
  67                         mresize(c);
  68                         break;
  69                 }
  70         }
  71 }
  72
  73 static void
  74 configurerequest(XEvent *e)
  75 {
  76         XConfigureRequestEvent *ev = &e->xconfigurerequest;
  77         XWindowChanges wc;
  78         Client *c;
  79
  80         ev->value_mask &= ~CWSibling;
  81         if((c = getclient(ev->window))) {
  82                 gravitate(c, True);
  83                 if(ev->value_mask & CWX)
  84                         c->x = ev->x;
  85                 if(ev->value_mask & CWY)
  86                         c->y = ev->y;
  87                 if(ev->value_mask & CWWidth)
  88                         c->w = ev->width;
  89                 if(ev->value_mask & CWHeight)
  90                         c->h = ev->height;
  91                 if(ev->value_mask & CWBorderWidth)
  92                         c->border = 1;
  93                 gravitate(c, False);
  94                 resize(c, True);
  95         }
  96
  97         wc.x = ev->x;
  98         wc.y = ev->y;
  99         wc.width = ev->width;
 100         wc.height = ev->height;
 101         wc.border_width = 1;
 102         wc.sibling = None;
 103         wc.stack_mode = Above;
 104         ev->value_mask &= ~CWStackMode;
 105         ev->value_mask |= CWBorderWidth;
 106         XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 107         XFlush(dpy);
 108 }
 109
 110 static void
 111 destroynotify(XEvent *e)
 112 {
 113         Client *c;
 114         XDestroyWindowEvent *ev = &e->xdestroywindow;
 115
 116         if((c = getclient(ev->window)))
 117                 unmanage(c);
 118 }
 119
 120 static void
 121 enternotify(XEvent *e)
 122 {
 123         XCrossingEvent *ev = &e->xcrossing;
 124         Client *c;
 125
 126         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 127                 return;
 128
 129         if((c = getclient(ev->window)))
 130                 focus(c);
 131         else if(ev->window == root)
 132                 issel = True;
 133 }
 134
 135 static void
 136 leavenotify(XEvent *e)
 137 {
 138         XCrossingEvent *ev = &e->xcrossing;
 139
 140         if((ev->window == root) && !ev->same_screen)
 141                 issel = True;
 142 }
 143
 144 static void
 145 expose(XEvent *e)
 146 {
 147         XExposeEvent *ev = &e->xexpose;
 148         Client *c;
 149
 150         if(ev->count == 0) {
 151                 if((c = gettitle(ev->window)))
 152                         draw_client(c);
 153         }
 154 }
 155
 156 static void
 157 keymapnotify(XEvent *e)
 158 {
 159         update_keys();
 160 }
 161
 162 static void
 163 maprequest(XEvent *e)
 164 {
 165         XMapRequestEvent *ev = &e->xmaprequest;
 166         static XWindowAttributes wa;
 167
 168         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 169                 return;
 170
 171         if(wa.override_redirect) {
 172                 XSelectInput(dpy, ev->window,
 173                                 (StructureNotifyMask | PropertyChangeMask));
 174                 return;
 175         }
 176
 177         if(!getclient(ev->window))
 178                 manage(ev->window, &wa);
 179 }
 180
 181 static void
 182 propertynotify(XEvent *e)
 183 {
 184         XPropertyEvent *ev = &e->xproperty;
 185         Window trans;
 186         Client *c;
 187
 188         if(ev->state == PropertyDelete)
 189                 return; /* ignore */
 190
 191         if((c = getclient(ev->window))) {
 192                 if(ev->atom == wm_atom[WMProtocols]) {
 193                         c->proto = win_proto(c->win);
 194                         return;
 195                 }
 196                 switch (ev->atom) {
 197                         default: break;
 198                         case XA_WM_TRANSIENT_FOR:
 199                                 XGetTransientForHint(dpy, c->win, &trans);
 200                                 if(!c->floating && (c->floating = (trans != 0)))
 201                                         arrange(NULL);
 202                                 break;
 203                         case XA_WM_NORMAL_HINTS:
 204                                 update_size(c);
 205                                 break;
 206                 }
 207                 if(ev->atom == XA_WM_NAME || ev->atom == net_atom[NetWMName]) {
 208                         update_name(c);
 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 }