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((c = getclient(ev->window))) {
  54                 craise(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 = 1;
  91                 gravitate(c, False);
  92                 resize(c, True);
  93         }
  94
  95         wc.x = ev->x;
  96         wc.y = ev->y;
  97         wc.width = ev->width;
  98         wc.height = ev->height;
  99         wc.border_width = 1;
 100         wc.sibling = None;
 101         wc.stack_mode = Above;
 102         ev->value_mask &= ~CWStackMode;
 103         ev->value_mask |= CWBorderWidth;
 104         XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
 105         XFlush(dpy);
 106 }
 107
 108 static void
 109 destroynotify(XEvent *e)
 110 {
 111         Client *c;
 112         XDestroyWindowEvent *ev = &e->xdestroywindow;
 113
 114         if((c = getclient(ev->window)))
 115                 unmanage(c);
 116 }
 117
 118 static void
 119 enternotify(XEvent *e)
 120 {
 121         XCrossingEvent *ev = &e->xcrossing;
 122         Client *c;
 123
 124         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
 125                 return;
 126
 127         if((c = getclient(ev->window)))
 128                 focus(c);
 129         else if(ev->window == root)
 130                 issel = True;
 131 }
 132
 133 static void
 134 leavenotify(XEvent *e)
 135 {
 136         XCrossingEvent *ev = &e->xcrossing;
 137
 138         if((ev->window == root) && !ev->same_screen)
 139                 issel = True;
 140 }
 141
 142 static void
 143 expose(XEvent *e)
 144 {
 145         XExposeEvent *ev = &e->xexpose;
 146         Client *c;
 147
 148         if(ev->count == 0) {
 149                 if((c = gettitle(ev->window)))
 150                         draw_client(c);
 151         }
 152 }
 153
 154 static void
 155 keymapnotify(XEvent *e)
 156 {
 157         update_keys();
 158 }
 159
 160 static void
 161 maprequest(XEvent *e)
 162 {
 163         XMapRequestEvent *ev = &e->xmaprequest;
 164         static XWindowAttributes wa;
 165
 166         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 167                 return;
 168
 169         if(wa.override_redirect) {
 170                 XSelectInput(dpy, ev->window,
 171                                 (StructureNotifyMask | PropertyChangeMask));
 172                 return;
 173         }
 174
 175         if(!getclient(ev->window))
 176                 manage(ev->window, &wa);
 177 }
 178
 179 static void
 180 propertynotify(XEvent *e)
 181 {
 182         XPropertyEvent *ev = &e->xproperty;
 183         Window trans;
 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, &trans);
 198                                 if(!c->floating && (c->floating = (trans != 0)))
 199                                         arrange(NULL);
 200                                 break;
 201                         case XA_WM_NORMAL_HINTS:
 202                                 update_size(c);
 203                                 break;
 204                 }
 205                 if(ev->atom == XA_WM_NAME || ev->atom == net_atom[NetWMName]) {
 206                         update_name(c);
 207                         draw_client(c);
 208                 }
 209         }
 210 }
 211
 212 static void
 213 unmapnotify(XEvent *e)
 214 {
 215         Client *c;
 216         XUnmapEvent *ev = &e->xunmap;
 217
 218         if((c = getclient(ev->window)))
 219                 unmanage(c);
 220 }