/* Emacs shell widget -- glue.
   Copyright (C) 1994, 1995 Sun Microsystems, Inc.

This file is part of XEmacs.

XEmacs is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation, either version 3 of the License, or (at your
option) any later version.

XEmacs is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with XEmacs.  If not, see <http://www.gnu.org/licenses/>. */

/* Synched up with: Not in FSF. */

/* Written by Ben Wing, May, 1994. */

#include <config.h>

#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <X11/StringDefs.h>
#include "xintrinsicp.h"
#include <X11/Shell.h>
#include <X11/ShellP.h>
#include "EmacsShell.h"
#include "ExternalShell.h"

#define ABORT abort

#if 0 /* Not currently used */

/* The root_geometry_manager() method in Shell.c is fucked up with regard
   to the user-specified-position vs. program-specified-position and
   user-specified-size vs. program-specified-size flag. (It always
   sets program-specified whenever the program requests a change
   in its size or position, even when this came from direct user
   request.) So we provide external entry points to fix this after
   the program requested a size or position change.  If it turns
   out that the user-specified-position flag needs to be set at the
   *same* time that the geometry change request is made, then we
   will have to duplicate the entire root_geometry_manager() method;
   but I don't think there are any WM's that require this. */

/* junk stolen from IntrinsicI.h */

extern void _XtAllocError( String /* alloc_type */);

/* junk ungraciously copied from Shell.c */

static void ComputeWMSizeHints(w, hints)
    WMShellWidget w;
    XSizeHints *hints;
{
    long flags;
    hints->flags = flags = w->wm.size_hints.flags;
#define copy(field) hints->field = w->wm.size_hints.field
    if (flags & (USPosition | PPosition)) {
	copy(x);
	copy(y);
    }
    if (flags & (USSize | PSize)) {
	copy(width);
	copy(height);
    }
    if (flags & PMinSize) {
	copy(min_width);
	copy(min_height);
    }
    if (flags & PMaxSize) {
	copy(max_width);
	copy(max_height);
    }
    if (flags & PResizeInc) {
	copy(width_inc);
	copy(height_inc);
    }
    if (flags & PAspect) {
	copy(min_aspect.x);
	copy(min_aspect.y);
	copy(max_aspect.x);
	copy(max_aspect.y);
    }
#undef copy
#define copy(field) hints->field = w->wm.field
    if (flags & PBaseSize) {
	copy(base_width);
	copy(base_height);
    }
    if (flags & PWinGravity)
	copy(win_gravity);
#undef copy
}

static void _SetWMSizeHints(w)
    WMShellWidget w;
{
    XSizeHints *size_hints = XAllocSizeHints();

    if (size_hints == NULL) _XtAllocError("XAllocSizeHints");
    ComputeWMSizeHints(w, size_hints);
    XSetWMNormalHints(XtDisplay((Widget)w), XtWindow((Widget)w), size_hints);
    XFree((char*)size_hints);
}

/* end of junk ungraciously copied from Shell.c */

#endif /* 0 */
#if 0 /* Not currently used */

void
EmacsShellSetSizeUserSpecified (Widget gw)
{
  WMShellWidget w = (WMShellWidget) gw;
  w->wm.size_hints.flags |= USSize;
  w->wm.size_hints.flags &= ~PSize;
  if (!w->shell.override_redirect && XtIsRealized (gw))
    _SetWMSizeHints (w);
}

void
EmacsShellSetPositionUserSpecified (Widget gw)
{
  WMShellWidget w = (WMShellWidget) gw;
  w->wm.size_hints.flags |= USPosition;
  w->wm.size_hints.flags &= ~PPosition;
  if (!w->shell.override_redirect && XtIsRealized (gw))
    _SetWMSizeHints (w);
}

#endif /* 0 */

void
EmacsShellSmashIconicHint (Widget shell, int iconic_p)
{
  /* See comment in frame-x.c about this */
  WMShellWidget wmshell = (WMShellWidget) shell;
  assert (XtIsSubclass (shell, wmShellWidgetClass));
  /* old_state = (wmshell->wm.wm_hints.flags & StateHint
                  ? wmshell->wm.wm_hints.initial_state
                  : NormalState); */
  wmshell->wm.wm_hints.flags |= StateHint;
  wmshell->wm.wm_hints.initial_state = iconic_p ? IconicState : NormalState;
}

void
EmacsShellUpdateSizeHints (Widget gw)
{
  if (XtIsSubclass (gw, topLevelEmacsShellWidgetClass))
    TopLevelEmacsShellUpdateSizeHints (gw);
#ifdef EXTERNAL_WIDGET
  else if (XtIsSubclass (gw, externalShellWidgetClass))
    /* do what ??? Don't abort! */;
#endif
  else if (XtIsSubclass (gw, transientEmacsShellWidgetClass))
    TransientEmacsShellUpdateSizeHints (gw);
  else
    ABORT ();
}
