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display.c
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display.c
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// Copyright 2020, Alisa Bedard
#include "display.h"
#include <X11/Xproto.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include "client.h"
#include "config.h"
#include "log.h"
#include "util.h"
static struct JBWMClient ** current_client;
static struct JBWMClient ** head_client;
void jbwm_set_up_error_handler(struct JBWMClient ** head_client_arg,
struct JBWMClient ** current_client_arg){
head_client=head_client_arg;
current_client=current_client_arg;
}
__attribute__((pure))
static int handle_xerror(Display * d __attribute__((unused)),
XErrorEvent * e)
{
struct JBWMClient *c;
switch (e->error_code) {
case BadAccess:
if (e->request_code == X_ChangeWindowAttributes)
jbwm_error("Cannot access the root window.");
break;
case BadWindow:
c=jbwm_find_client(*head_client, e->resourceid);
if(c)
jbwm_client_free(c, head_client, current_client);
break;
case BadAtom:
break;
}
JBWM_LOG("XError type:%d xid:%lu serial:%lu"
" err:%d req:%d min:%d\n",
e->type, e->resourceid, e->serial, e->error_code,
e->request_code, e->minor_code);
return 0; // Ignore everything else.
}
Display * jbwm_open_display(void)
{
Display * display;
errno = ECONNREFUSED; // Default error message
display=XOpenDisplay(NULL);
if(!display)
jbwm_error(getenv("DISPLAY"));
XSetErrorHandler(handle_xerror);
return display;
}