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 configurerequest(XEvent *e);
  16 static void destroynotify(XEvent *e);
  17 static void enternotify(XEvent *e);
  18 static void leavenotify(XEvent *e);
  19 static void expose(XEvent *e);
  20 static void keymapnotify(XEvent *e);
  21 static void maprequest(XEvent *e);
  22 static void propertynotify(XEvent *e);
  23 static void unmapnotify(XEvent *e);
  24
  25 void (*handler[LASTEvent]) (XEvent *) = {
  26         [ConfigureRequest] = configurerequest,
  27         [DestroyNotify] = destroynotify,
  28         [EnterNotify] = enternotify,
  29         [LeaveNotify] = leavenotify,
  30         [Expose] = expose,
  31         [KeyPress] = keypress,
  32         [KeymapNotify] = keymapnotify,
  33         [MapRequest] = maprequest,
  34         [PropertyNotify] = propertynotify,
  35         [UnmapNotify] = unmapnotify
  36 };
  37
  38 unsigned int
  39 flush_events(long even_mask)
  40 {
  41         XEvent ev;
  42         unsigned int n = 0;
  43         while(XCheckMaskEvent(dpy, even_mask, &ev)) n++;
  44         return n;
  45 }
  46
  47 static void
  48 configurerequest(XEvent *e)
  49 {
  50         XConfigureRequestEvent *ev = &e->xconfigurerequest;
  51         XWindowChanges wc;
  52         Client *c;
  53
  54         c = getclient(ev->window);
  55         ev->value_mask &= ~CWSibling;
  56         if(c) {
  57                 if(ev->value_mask & CWX)
  58                         c->r[RFloat].x = ev->x;
  59                 if(ev->value_mask & CWY)
  60                         c->r[RFloat].y = ev->y;
  61                 if(ev->value_mask & CWWidth)
  62                         c->r[RFloat].width = ev->width;
  63                 if(ev->value_mask & CWHeight)
  64                         c->r[RFloat].height = ev->height;
  65                 if(ev->value_mask & CWBorderWidth)
  66                         c->border = ev->border_width;
  67         }
  68
  69         wc.x = ev->x;
  70         wc.y = ev->y;
  71         wc.width = ev->width;
  72         wc.height = ev->height;
  73         wc.border_width = 0;
  74         wc.sibling = None;
  75         wc.stack_mode = Above;
  76         ev->value_mask &= ~CWStackMode;
  77         ev->value_mask |= CWBorderWidth;
  78         XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
  79         XFlush(dpy);
  80 }
  81
  82 static void
  83 destroynotify(XEvent *e)
  84 {
  85         Client *c;
  86         XDestroyWindowEvent *ev = &e->xdestroywindow;
  87
  88         if((c = getclient(ev->window)))
  89                 unmanage(c);
  90 }
  91
  92 static void
  93 enternotify(XEvent *e)
  94 {
  95         XCrossingEvent *ev = &e->xcrossing;
  96         Client *c;
  97
  98         if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
  99                 return;
 100
 101         if((c = getclient(ev->window)))
 102                 focus(c);
 103         else if(ev->window == root) {
 104                 sel_screen = True;
 105                 /*draw_frames();*/
 106         }
 107 }
 108
 109 static void
 110 leavenotify(XEvent *e)
 111 {
 112         XCrossingEvent *ev = &e->xcrossing;
 113
 114         if((ev->window == root) && !ev->same_screen) {
 115                 sel_screen = True;
 116                 /*draw_frames();*/
 117         }
 118 }
 119
 120 static void
 121 expose(XEvent *e)
 122 {
 123         XExposeEvent *ev = &e->xexpose;
 124
 125         if(ev->count == 0) {
 126                 if(ev->window == barwin)
 127                         draw_bar();
 128         }
 129 }
 130
 131 static void
 132 keymapnotify(XEvent *e)
 133 {
 134         update_keys();
 135 }
 136
 137 static void
 138 maprequest(XEvent *e)
 139 {
 140         XMapRequestEvent *ev = &e->xmaprequest;
 141         static XWindowAttributes wa;
 142
 143         if(!XGetWindowAttributes(dpy, ev->window, &wa))
 144                 return;
 145
 146         if(wa.override_redirect) {
 147                 XSelectInput(dpy, ev->window,
 148                                 (StructureNotifyMask | PropertyChangeMask));
 149                 return;
 150         }
 151
 152         if(!getclient(ev->window))
 153                 manage(ev->window, &wa);
 154 }
 155
 156 static void
 157 propertynotify(XEvent *e)
 158 {
 159         XPropertyEvent *ev = &e->xproperty;
 160         long msize;
 161         Client *c;
 162
 163         if(ev->state == PropertyDelete)
 164                 return; /* ignore */
 165
 166         if(ev->atom == wm_atom[WMProtocols]) {
 167                 c->proto = win_proto(c->win);
 168                 return;
 169         }
 170         if((c = getclient(ev->window))) {
 171                 switch (ev->atom) {
 172                         default: break;
 173                         case XA_WM_TRANSIENT_FOR:
 174                                 XGetTransientForHint(dpy, c->win, &c->trans);
 175                                 break;
 176                         case XA_WM_NORMAL_HINTS:
 177                                 if(!XGetWMNormalHints(dpy, c->win, &c->size, &msize)
 178                                                 || !c->size.flags)
 179                                         c->size.flags = PSize;
 180                                 if(c->size.flags & PMinSize && c->size.flags & PMaxSize
 181                                                 && c->size.min_width == c->size.max_width
 182                                                 && c->size.min_height == c->size.max_height)
 183                                         c->fixedsize = True;
 184                                 else
 185                                         c->fixedsize = False;
 186                                 break;
 187                 }
 188                 if(ev->atom == XA_WM_NAME || ev->atom == net_atom[NetWMName]) {
 189                         update_name(c);
 190                 }
 191         }
 192 }
 193
 194 static void
 195 unmapnotify(XEvent *e)
 196 {
 197         Client *c;
 198         XUnmapEvent *ev = &e->xunmap;
 199
 200         if((c = getclient(ev->window)))
 201                 unmanage(c);
 202 }