/* $OpenBSD: panel.c,v 1.3 1997/12/03 05:17:56 millert Exp $ */ /*************************************************************************** * COPYRIGHT NOTICE * **************************************************************************** * panels is copyright (C) 1995 * * Zeyd M. Ben-Halim * * zmbenhal@netcom.com * * Eric S. Raymond * * esr@snark.thyrsus.com * * * * All praise to the original author, Warren Tucker. * * * * Permission is hereby granted to reproduce and distribute panels * * by any means and for any fee, whether alone or as part of a * * larger distribution, in source or in binary form, PROVIDED * * this notice is included with any such distribution, and is not * * removed from any of its header files. Mention of panels in any * * applications linked with it is highly appreciated. * * * * panels comes AS IS with no warranty, implied or expressed. * * * ***************************************************************************/ /* panel.c -- implementation of panels library, some core routines */ #include "panel.priv.h" MODULE_ID("Id: panel.c,v 1.14 1997/10/18 18:34:31 tom Exp $") #ifdef TRACE #ifndef TRACE_TXT const char *_nc_my_visbuf(const void *ptr) { char temp[40]; if (ptr != 0) snprintf(temp, sizeof(temp), "ptr:%p", ptr); else strcpy(temp, ""); 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]; snprintf(s80,sizeof(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]; snprintf(s80,sizeof(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("",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("",9,pan); }