client.c

/*  jbwm - Minimalist Window Manager for X */
/*  Copyright 2008-2020, Alisa Bedard <alisabedard@gmail.com> */
/*  Copyright 1999-2015, Ciaran Anscomb <evilwm@6809.org.uk> */
/*  See README for license and other details. */
#include "client.h"
#include <stdlib.h>
#include "ewmh.h"
#include "ewmh_state.h"
#include "atom.h"
#include "select.h"
#include "title_bar.h"
#include "util.h"
#include "vdesk.h"
#include "wm_state.h"
#include <X11/Xatom.h>
#include <X11/Xutil.h>
/* Relink c's linked list to exclude c.
 * Note:  As *c and *i may alias each other, use of 'restrict'
 * in relink would be invalid. */
static void relink(const struct JBWMClient * c, struct JBWMClient * i,
  struct JBWMClient ** head_client, struct JBWMClient ** current_client)
{
  if (*(current_client) == c)
    *(current_client) = NULL; // flag as invalid
  if (i == c) /* c is head client.  */
    *(head_client) = c->next; /* removed first client. */
  if (i && i->next)
    relink(c, (i->next != c) ? i->next : (i->next = c->next),
      head_client, current_client);
}
void jbwm_set_client_vdesk(struct JBWMClient * c, uint8_t desktop)
{
  Display *d;
  if(c){
    d=c->screen->xlib->display;
    c->vdesk=desktop;
    /*  Save in an atomic property, useful for restart and deskbars. */
    XChangeProperty(d, c->window, jbwm_atoms[JBWM_NET_WM_DESKTOP],
      XA_CARDINAL, 8, PropModeReplace, (unsigned char *)&desktop, 1);
    if(c->screen->vdesk!=c->vdesk)
      jbwm_hide_client(c);
  }
}
/* Return the client that has specified window as either window or parent.
 *  This is the a frequently called function.  Show restraint in adding any
 *  future tests.  */
struct JBWMClient * jbwm_find_client(
  struct JBWMClient *head, const Window w)
{
  return (head && head->parent != w && head->window != w
    && head->tb.win != w) ? jbwm_find_client(head->next, w) : head;

}
void jbwm_toggle_sticky(struct JBWMClient * c,
  struct JBWMClient ** current_client)
{
  if(c){
    c->opt.sticky ^= true; /*  toggle */
    jbwm_select_client(c, current_client);
    jbwm_update_title_bar(c);
    {
      Display *d;
      d=c->screen->xlib->display;
      (c->opt.sticky ? jbwm_ewmh_add_state : jbwm_ewmh_remove_state)
      (d, c->window,
        jbwm_atoms[JBWM_NET_WM_STATE_STICKY]);
    }
  }
}
/*  Free client and destroy its windows and properties. */
void jbwm_client_free(struct JBWMClient * c, struct JBWMClient ** head_client,
  struct JBWMClient ** current_client)
{
  Display *d;
  const Window w = c->window, parent = c->parent;
  const union JBWMRectangle * p = &c->size;
  d = c->screen->xlib->display;
  /*  Per ICCCM + wm-spec */
  XDeleteProperty(d, w, jbwm_atoms[JBWM_NET_WM_STATE]);
  XDeleteProperty(d, w, jbwm_atoms[JBWM_NET_WM_DESKTOP]);
  XReparentWindow(d, w, c->screen->xlib->root, p->x, p->y);
  XRemoveFromSaveSet(d, w);
  if(parent)
    XDestroyWindow(d, parent);
  relink(c, *head_client, head_client, current_client);
  free(c);
}
void jbwm_hide_client(const struct JBWMClient * c)
{
  XUnmapWindow(c->screen->xlib->display, c->parent);
  jbwm_set_wm_state(c, IconicState);
}
void jbwm_restore_client(const struct JBWMClient * c)
{
  XMapWindow(c->screen->xlib->display, c->parent);
  jbwm_set_wm_state(c, NormalState);
}