/****************************************************************************
* Copyright (c) 1998 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
****************************************************************************/
/* panel.c -- implementation of panels library, some core routines */
#include "panel.priv.h"
MODULE_ID("$Id: panel.c,v 1.16 1998/09/19 21:26:31 Todd.Miller Exp $")
#ifdef TRACE
#ifndef TRACE_TXT
const char *_nc_my_visbuf(const void *ptr)
{
char temp[32];
if (ptr != 0)
sprintf(temp, "ptr:%p", ptr);
else
strcpy(temp, "<null>");
return _nc_visbuf(temp);
}
#endif
#endif
/*+-------------------------------------------------------------------------
dPanel(text,pan)
--------------------------------------------------------------------------*/
#ifdef TRACE
void
_nc_dPanel(const char *text, const PANEL *pan)
{
_tracef("%s id=%s b=%s a=%s y=%d x=%d",
text, USER_PTR(pan->user),
(pan->below) ? USER_PTR(pan->below->user) : "--",
(pan->above) ? USER_PTR(pan->above->user) : "--",
pan->wstarty, pan->wstartx);
}
#endif
/*+-------------------------------------------------------------------------
dStack(fmt,num,pan)
--------------------------------------------------------------------------*/
#ifdef TRACE
void
_nc_dStack(const char *fmt, int num, const PANEL *pan)
{
char s80[80];
sprintf(s80,fmt,num,pan);
_tracef("%s b=%s t=%s",s80,
(_nc_bottom_panel) ? USER_PTR(_nc_bottom_panel->user) : "--",
(_nc_top_panel) ? USER_PTR(_nc_top_panel->user) : "--");
if(pan)
_tracef("pan id=%s", USER_PTR(pan->user));
pan = _nc_bottom_panel;
while(pan)
{
dPanel("stk",pan);
pan = pan->above;
}
}
#endif
/*+-------------------------------------------------------------------------
Wnoutrefresh(pan) - debugging hook for wnoutrefresh
--------------------------------------------------------------------------*/
#ifdef TRACE
void
_nc_Wnoutrefresh(const PANEL *pan)
{
dPanel("wnoutrefresh",pan);
wnoutrefresh(pan->win);
}
#endif
/*+-------------------------------------------------------------------------
Touchpan(pan)
--------------------------------------------------------------------------*/
#ifdef TRACE
void
_nc_Touchpan(const PANEL *pan)
{
dPanel("Touchpan",pan);
touchwin(pan->win);
}
#endif
/*+-------------------------------------------------------------------------
Touchline(pan,start,count)
--------------------------------------------------------------------------*/
#ifdef TRACE
void
_nc_Touchline(const PANEL *pan, int start, int count)
{
char s80[80];
sprintf(s80,"Touchline s=%d c=%d",start,count);
dPanel(s80,pan);
touchline(pan->win,start,count);
}
#endif
/*+-------------------------------------------------------------------------
__panels_overlapped(pan1,pan2) - check panel overlapped
--------------------------------------------------------------------------*/
static INLINE bool
__panels_overlapped(register const PANEL *pan1, register const PANEL *pan2)
{
if(!pan1 || !pan2)
return(FALSE);
dBug(("__panels_overlapped %s %s", USER_PTR(pan1->user), USER_PTR(pan2->user)));
/* pan1 intersects with pan2 ? */
if( (((pan1->wstarty >= pan2->wstarty) && (pan1->wstarty < pan2->wendy)) ||
((pan2->wstarty >= pan1->wstarty) && (pan2->wstarty < pan1->wendy))) &&
(((pan1->wstartx >= pan2->wstartx) && (pan1->wstartx < pan2->wendx)) ||
((pan2->wstartx >= pan1->wstartx) && (pan2->wstartx < pan1->wendx)))
) return(TRUE);
else {
dBug((" no"));
return(FALSE);
}
}
/*+-------------------------------------------------------------------------
_nc_free_obscure(pan)
--------------------------------------------------------------------------*/
void
_nc_free_obscure(PANEL *pan)
{
PANELCONS *tobs = pan->obscure; /* "this" one */
PANELCONS *nobs; /* "next" one */
while(tobs)
{
nobs = tobs->above;
free((char *)tobs);
tobs = nobs;
}
pan->obscure = (PANELCONS *)0;
}
/*+-------------------------------------------------------------------------
__override(pan,show)
--------------------------------------------------------------------------*/
void
_nc_override(const PANEL *pan, int show)
{
int y;
PANEL *pan2;
PANELCONS *tobs = pan->obscure; /* "this" one */
dBug(("_nc_override %s,%d", USER_PTR(pan->user),show));
switch (show)
{
case P_TOUCH:
Touchpan(pan);
/* The following while loop will now mark all panel window lines
* obscured by use or obscuring us as touched, so they will be
* updated.
*/
break;
case P_UPDATE:
while(tobs && (tobs->pan != pan))
tobs = tobs->above;
/* The next loop will now only go through the panels obscuring pan;
* it updates all the lines in the obscuring panels in sync. with
* the lines touched in pan itself. This is called in update_panels()
* in a loop from the bottom_panel to the top_panel, resulting in
* the desired update effect.
*/
break;
default:
return;
}
while(tobs)
{
if((pan2 = tobs->pan) != pan) {
dBug(("test obs pan=%s pan2=%s", USER_PTR(pan->user), USER_PTR(pan2->user)));
for(y = pan->wstarty; y < pan->wendy; y++) {
if( (y >= pan2->wstarty) && (y < pan2->wendy) &&
((is_linetouched(pan->win,y - pan->wstarty) == TRUE)) )
Touchline(pan2,y - pan2->wstarty,1);
}
}
tobs = tobs->above;
}
}
/*+-------------------------------------------------------------------------
__calculate_obscure()
--------------------------------------------------------------------------*/
void
_nc_calculate_obscure(void)
{
PANEL *pan;
PANEL *pan2;
PANELCONS *tobs; /* "this" one */
PANELCONS *lobs = (PANELCONS *)0; /* last one */
pan = _nc_bottom_panel;
while(pan)
{
if(pan->obscure)
_nc_free_obscure(pan);
dBug(("--> __calculate_obscure %s", USER_PTR(pan->user)));
lobs = (PANELCONS *)0; /* last one */
pan2 = _nc_bottom_panel;
/* This loop builds a list of panels obsured by pan or obscuring
pan; pan itself is in the list; all panels before pan are
obscured by pan, all panels after pan are obscuring pan. */
while(pan2)
{
if(__panels_overlapped(pan,pan2))
{
if(!(tobs = (PANELCONS *)malloc(sizeof(PANELCONS))))
return;
tobs->pan = pan2;
dPanel("obscured",pan2);
tobs->above = (PANELCONS *)0;
if(lobs)
lobs->above = tobs;
else
pan->obscure = tobs;
lobs = tobs;
}
pan2 = pan2->above;
}
_nc_override(pan,P_TOUCH);
pan = pan->above;
}
}
/*+-------------------------------------------------------------------------
_nc_panel_is_linked(pan) - check to see if panel is in the stack
--------------------------------------------------------------------------*/
bool
_nc_panel_is_linked(const PANEL *pan)
{
/* This works! The only case where it would fail is, when the list has
only one element. But this could only be the pseudo panel at the bottom */
return ( ((pan->above!=(PANEL *)0) ||
(pan->below!=(PANEL *)0) ||
(pan==_nc_bottom_panel)) ? TRUE : FALSE );
}
/*+-------------------------------------------------------------------------
__panel_link_bottom(pan) - link panel into stack at bottom
--------------------------------------------------------------------------*/
void
_nc_panel_link_bottom(PANEL *pan)
{
#ifdef TRACE
dStack("<lb%d>",1,pan);
if(_nc_panel_is_linked(pan))
return;
#endif
pan->above = (PANEL *)0;
pan->below = (PANEL *)0;
if(_nc_bottom_panel)
{ /* the stdscr pseudo panel always stays real bottom;
so we insert after bottom panel*/
pan->below = _nc_bottom_panel;
pan->above = _nc_bottom_panel->above;
if (pan->above)
pan->above->below = pan;
_nc_bottom_panel->above = pan;
}
else
_nc_bottom_panel = pan;
if(!_nc_top_panel)
_nc_top_panel = pan;
assert(_nc_bottom_panel == _nc_stdscr_pseudo_panel);
_nc_calculate_obscure();
dStack("<lb%d>",9,pan);
}
