event.c
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/*
* (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
* See LICENSE file for license details.
*/
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <X11/keysym.h>
#include <X11/Xatom.h>
#include "wm.h"
/* local functions */
static void buttonpress(XEvent *e);
static void configurerequest(XEvent *e);
static void destroynotify(XEvent *e);
static void enternotify(XEvent *e);
static void leavenotify(XEvent *e);
static void expose(XEvent *e);
static void keymapnotify(XEvent *e);
static void maprequest(XEvent *e);
static void propertynotify(XEvent *e);
static void unmapnotify(XEvent *e);
void (*handler[LASTEvent]) (XEvent *) = {
[ButtonPress] = buttonpress,
[ConfigureRequest] = configurerequest,
[DestroyNotify] = destroynotify,
[EnterNotify] = enternotify,
[LeaveNotify] = leavenotify,
[Expose] = expose,
[KeyPress] = keypress,
[KeymapNotify] = keymapnotify,
[MapRequest] = maprequest,
[PropertyNotify] = propertynotify,
[UnmapNotify] = unmapnotify
};
unsigned int
discard_events(long even_mask)
{
XEvent ev;
unsigned int n = 0;
while(XCheckMaskEvent(dpy, even_mask, &ev)) n++;
return n;
}
static void
buttonpress(XEvent *e)
{
XButtonPressedEvent *ev = &e->xbutton;
Client *c;
if((c = getclient(ev->window))) {
switch(ev->button) {
default:
break;
case Button1:
mmove(c);
break;
case Button2:
XLowerWindow(dpy, c->win);
break;
case Button3:
mresize(c);
break;
}
}
}
static void
configurerequest(XEvent *e)
{
XConfigureRequestEvent *ev = &e->xconfigurerequest;
XWindowChanges wc;
Client *c;
ev->value_mask &= ~CWSibling;
if((c = getclient(ev->window))) {
if(ev->value_mask & CWX)
c->r[RFloat].x = ev->x;
if(ev->value_mask & CWY)
c->r[RFloat].y = ev->y;
if(ev->value_mask & CWWidth)
c->r[RFloat].width = ev->width;
if(ev->value_mask & CWHeight)
c->r[RFloat].height = ev->height;
}
wc.x = ev->x;
wc.y = ev->y;
wc.width = ev->width;
wc.height = ev->height;
wc.border_width = 0;
wc.sibling = None;
wc.stack_mode = Above;
ev->value_mask &= ~CWStackMode;
ev->value_mask |= CWBorderWidth;
XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
XFlush(dpy);
}
static void
destroynotify(XEvent *e)
{
Client *c;
XDestroyWindowEvent *ev = &e->xdestroywindow;
if((c = getclient(ev->window)))
unmanage(c);
}
static void
enternotify(XEvent *e)
{
XCrossingEvent *ev = &e->xcrossing;
Client *c;
if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
return;
if((c = getclient(ev->window)))
focus(c);
else if(ev->window == root) {
sel_screen = True;
/*draw_frames();*/
}
}
static void
leavenotify(XEvent *e)
{
XCrossingEvent *ev = &e->xcrossing;
if((ev->window == root) && !ev->same_screen) {
sel_screen = True;
/*draw_frames();*/
}
}
static void
expose(XEvent *e)
{
XExposeEvent *ev = &e->xexpose;
if(ev->count == 0) {
if(ev->window == barwin)
draw_bar();
}
}
static void
keymapnotify(XEvent *e)
{
update_keys();
}
static void
maprequest(XEvent *e)
{
XMapRequestEvent *ev = &e->xmaprequest;
static XWindowAttributes wa;
if(!XGetWindowAttributes(dpy, ev->window, &wa))
return;
if(wa.override_redirect) {
XSelectInput(dpy, ev->window,
(StructureNotifyMask | PropertyChangeMask));
return;
}
if(!getclient(ev->window))
manage(ev->window, &wa);
}
static void
propertynotify(XEvent *e)
{
XPropertyEvent *ev = &e->xproperty;
long msize;
Client *c;
if(ev->state == PropertyDelete)
return; /* ignore */
if(ev->atom == wm_atom[WMProtocols]) {
c->proto = win_proto(c->win);
return;
}
if((c = getclient(ev->window))) {
switch (ev->atom) {
default: break;
case XA_WM_TRANSIENT_FOR:
XGetTransientForHint(dpy, c->win, &c->trans);
break;
case XA_WM_NORMAL_HINTS:
if(!XGetWMNormalHints(dpy, c->win, &c->size, &msize)
|| !c->size.flags)
c->size.flags = PSize;
if(c->size.flags & PMinSize && c->size.flags & PMaxSize
&& c->size.min_width == c->size.max_width
&& c->size.min_height == c->size.max_height)
c->fixedsize = True;
else
c->fixedsize = False;
break;
}
if(ev->atom == XA_WM_NAME || ev->atom == net_atom[NetWMName]) {
update_name(c);
}
}
}
static void
unmapnotify(XEvent *e)
{
Client *c;
XUnmapEvent *ev = &e->xunmap;
if((c = getclient(ev->window)))
unmanage(c);
}