1 /****************************************************************************
2 * Copyright (c) 1998 Free Software Foundation, Inc. *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
7 * without limitation the rights to use, copy, modify, merge, publish, *
8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
25 * sale, use or other dealings in this Software without prior written *
27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 ****************************************************************************/
34 /* panel.c -- implementation of panels library, some core routines */
35 #include "panel.priv.h"
37 MODULE_ID("$Id: panel.c,v 1.15 1998/02/11 12:14:01 tom Exp $")
41 const char *_nc_my_visbuf(const void *ptr)
45 sprintf(temp, "ptr:%p", ptr);
47 strcpy(temp, "<null>");
48 return _nc_visbuf(temp);
54 /*+-------------------------------------------------------------------------
56 --------------------------------------------------------------------------*/
59 _nc_dPanel(const char *text, const PANEL *pan)
61 _tracef("%s id=%s b=%s a=%s y=%d x=%d",
62 text, USER_PTR(pan->user),
63 (pan->below) ? USER_PTR(pan->below->user) : "--",
64 (pan->above) ? USER_PTR(pan->above->user) : "--",
65 pan->wstarty, pan->wstartx);
69 /*+-------------------------------------------------------------------------
71 --------------------------------------------------------------------------*/
74 _nc_dStack(const char *fmt, int num, const PANEL *pan)
78 sprintf(s80,fmt,num,pan);
79 _tracef("%s b=%s t=%s",s80,
80 (_nc_bottom_panel) ? USER_PTR(_nc_bottom_panel->user) : "--",
81 (_nc_top_panel) ? USER_PTR(_nc_top_panel->user) : "--");
83 _tracef("pan id=%s", USER_PTR(pan->user));
84 pan = _nc_bottom_panel;
93 /*+-------------------------------------------------------------------------
94 Wnoutrefresh(pan) - debugging hook for wnoutrefresh
95 --------------------------------------------------------------------------*/
98 _nc_Wnoutrefresh(const PANEL *pan)
100 dPanel("wnoutrefresh",pan);
101 wnoutrefresh(pan->win);
105 /*+-------------------------------------------------------------------------
107 --------------------------------------------------------------------------*/
110 _nc_Touchpan(const PANEL *pan)
112 dPanel("Touchpan",pan);
117 /*+-------------------------------------------------------------------------
118 Touchline(pan,start,count)
119 --------------------------------------------------------------------------*/
122 _nc_Touchline(const PANEL *pan, int start, int count)
125 sprintf(s80,"Touchline s=%d c=%d",start,count);
127 touchline(pan->win,start,count);
131 /*+-------------------------------------------------------------------------
132 __panels_overlapped(pan1,pan2) - check panel overlapped
133 --------------------------------------------------------------------------*/
135 __panels_overlapped(register const PANEL *pan1, register const PANEL *pan2)
140 dBug(("__panels_overlapped %s %s", USER_PTR(pan1->user), USER_PTR(pan2->user)));
141 /* pan1 intersects with pan2 ? */
142 if( (((pan1->wstarty >= pan2->wstarty) && (pan1->wstarty < pan2->wendy)) ||
143 ((pan2->wstarty >= pan1->wstarty) && (pan2->wstarty < pan1->wendy))) &&
144 (((pan1->wstartx >= pan2->wstartx) && (pan1->wstartx < pan2->wendx)) ||
145 ((pan2->wstartx >= pan1->wstartx) && (pan2->wstartx < pan1->wendx)))
153 /*+-------------------------------------------------------------------------
154 _nc_free_obscure(pan)
155 --------------------------------------------------------------------------*/
157 _nc_free_obscure(PANEL *pan)
159 PANELCONS *tobs = pan->obscure; /* "this" one */
160 PANELCONS *nobs; /* "next" one */
168 pan->obscure = (PANELCONS *)0;
171 /*+-------------------------------------------------------------------------
173 --------------------------------------------------------------------------*/
175 _nc_override(const PANEL *pan, int show)
179 PANELCONS *tobs = pan->obscure; /* "this" one */
181 dBug(("_nc_override %s,%d", USER_PTR(pan->user),show));
187 /* The following while loop will now mark all panel window lines
188 * obscured by use or obscuring us as touched, so they will be
193 while(tobs && (tobs->pan != pan))
195 /* The next loop will now only go through the panels obscuring pan;
196 * it updates all the lines in the obscuring panels in sync. with
197 * the lines touched in pan itself. This is called in update_panels()
198 * in a loop from the bottom_panel to the top_panel, resulting in
199 * the desired update effect.
208 if((pan2 = tobs->pan) != pan) {
209 dBug(("test obs pan=%s pan2=%s", USER_PTR(pan->user), USER_PTR(pan2->user)));
210 for(y = pan->wstarty; y < pan->wendy; y++) {
211 if( (y >= pan2->wstarty) && (y < pan2->wendy) &&
212 ((is_linetouched(pan->win,y - pan->wstarty) == TRUE)) )
213 Touchline(pan2,y - pan2->wstarty,1);
220 /*+-------------------------------------------------------------------------
221 __calculate_obscure()
222 --------------------------------------------------------------------------*/
224 _nc_calculate_obscure(void)
228 PANELCONS *tobs; /* "this" one */
229 PANELCONS *lobs = (PANELCONS *)0; /* last one */
231 pan = _nc_bottom_panel;
235 _nc_free_obscure(pan);
236 dBug(("--> __calculate_obscure %s", USER_PTR(pan->user)));
237 lobs = (PANELCONS *)0; /* last one */
238 pan2 = _nc_bottom_panel;
239 /* This loop builds a list of panels obsured by pan or obscuring
240 pan; pan itself is in the list; all panels before pan are
241 obscured by pan, all panels after pan are obscuring pan. */
244 if(__panels_overlapped(pan,pan2))
246 if(!(tobs = (PANELCONS *)malloc(sizeof(PANELCONS))))
249 dPanel("obscured",pan2);
250 tobs->above = (PANELCONS *)0;
259 _nc_override(pan,P_TOUCH);
264 /*+-------------------------------------------------------------------------
265 _nc_panel_is_linked(pan) - check to see if panel is in the stack
266 --------------------------------------------------------------------------*/
268 _nc_panel_is_linked(const PANEL *pan)
270 /* This works! The only case where it would fail is, when the list has
271 only one element. But this could only be the pseudo panel at the bottom */
272 return ( ((pan->above!=(PANEL *)0) ||
273 (pan->below!=(PANEL *)0) ||
274 (pan==_nc_bottom_panel)) ? TRUE : FALSE );
278 /*+-------------------------------------------------------------------------
279 __panel_link_bottom(pan) - link panel into stack at bottom
280 --------------------------------------------------------------------------*/
282 _nc_panel_link_bottom(PANEL *pan)
285 dStack("<lb%d>",1,pan);
286 if(_nc_panel_is_linked(pan))
290 pan->above = (PANEL *)0;
291 pan->below = (PANEL *)0;
293 { /* the stdscr pseudo panel always stays real bottom;
294 so we insert after bottom panel*/
295 pan->below = _nc_bottom_panel;
296 pan->above = _nc_bottom_panel->above;
298 pan->above->below = pan;
299 _nc_bottom_panel->above = pan;
302 _nc_bottom_panel = pan;
305 assert(_nc_bottom_panel == _nc_stdscr_pseudo_panel);
306 _nc_calculate_obscure();
307 dStack("<lb%d>",9,pan);