1 /* $OpenBSD: panel.c,v 1.6 1998/11/19 01:14:21 millert Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998 Free Software Foundation, Inc. * 5 * * 6 * Permission is hereby granted, free of charge, to any person obtaining a * 7 * copy of this software and associated documentation files (the * 8 * "Software"), to deal in the Software without restriction, including * 9 * without limitation the rights to use, copy, modify, merge, publish, * 10 * distribute, distribute with modifications, sublicense, and/or sell * 11 * copies of the Software, and to permit persons to whom the Software is * 12 * furnished to do so, subject to the following conditions: * 13 * * 14 * The above copyright notice and this permission notice shall be included * 15 * in all copies or substantial portions of the Software. * 16 * * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 24 * * 25 * Except as contained in this notice, the name(s) of the above copyright * 26 * holders shall not be used in advertising or otherwise to promote the * 27 * sale, use or other dealings in this Software without prior written * 28 * authorization. * 29 ****************************************************************************/ 30 31 /**************************************************************************** 32 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1995 * 33 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 34 ****************************************************************************/ 35 36 /* panel.c -- implementation of panels library, some core routines */ 37 #include "panel.priv.h" 38 39 MODULE_ID("$From: panel.c,v 1.16 1998/09/19 21:26:31 Todd.Miller Exp $") 40 41 #ifdef TRACE 42 #ifndef TRACE_TXT 43 const char *_nc_my_visbuf(const void *ptr) 44 { 45 char temp[32]; 46 if (ptr != 0) 47 snprintf(temp, sizeof(temp), "ptr:%p", ptr); 48 else 49 strcpy(temp, "<null>"); 50 return _nc_visbuf(temp); 51 } 52 #endif 53 #endif 54 55 56 /*+------------------------------------------------------------------------- 57 dPanel(text,pan) 58 --------------------------------------------------------------------------*/ 59 #ifdef TRACE 60 void 61 _nc_dPanel(const char *text, const PANEL *pan) 62 { 63 _tracef("%s id=%s b=%s a=%s y=%d x=%d", 64 text, USER_PTR(pan->user), 65 (pan->below) ? USER_PTR(pan->below->user) : "--", 66 (pan->above) ? USER_PTR(pan->above->user) : "--", 67 pan->wstarty, pan->wstartx); 68 } 69 #endif 70 71 /*+------------------------------------------------------------------------- 72 dStack(fmt,num,pan) 73 --------------------------------------------------------------------------*/ 74 #ifdef TRACE 75 void 76 _nc_dStack(const char *fmt, int num, const PANEL *pan) 77 { 78 char s80[80]; 79 80 snprintf(s80,sizeof(s80),fmt,num,pan); 81 _tracef("%s b=%s t=%s",s80, 82 (_nc_bottom_panel) ? USER_PTR(_nc_bottom_panel->user) : "--", 83 (_nc_top_panel) ? USER_PTR(_nc_top_panel->user) : "--"); 84 if(pan) 85 _tracef("pan id=%s", USER_PTR(pan->user)); 86 pan = _nc_bottom_panel; 87 while(pan) 88 { 89 dPanel("stk",pan); 90 pan = pan->above; 91 } 92 } 93 #endif 94 95 /*+------------------------------------------------------------------------- 96 Wnoutrefresh(pan) - debugging hook for wnoutrefresh 97 --------------------------------------------------------------------------*/ 98 #ifdef TRACE 99 void 100 _nc_Wnoutrefresh(const PANEL *pan) 101 { 102 dPanel("wnoutrefresh",pan); 103 wnoutrefresh(pan->win); 104 } 105 #endif 106 107 /*+------------------------------------------------------------------------- 108 Touchpan(pan) 109 --------------------------------------------------------------------------*/ 110 #ifdef TRACE 111 void 112 _nc_Touchpan(const PANEL *pan) 113 { 114 dPanel("Touchpan",pan); 115 touchwin(pan->win); 116 } 117 #endif 118 119 /*+------------------------------------------------------------------------- 120 Touchline(pan,start,count) 121 --------------------------------------------------------------------------*/ 122 #ifdef TRACE 123 void 124 _nc_Touchline(const PANEL *pan, int start, int count) 125 { 126 char s80[80]; 127 snprintf(s80,sizeof(s80),"Touchline s=%d c=%d",start,count); 128 dPanel(s80,pan); 129 touchline(pan->win,start,count); 130 } 131 #endif 132 133 /*+------------------------------------------------------------------------- 134 __panels_overlapped(pan1,pan2) - check panel overlapped 135 --------------------------------------------------------------------------*/ 136 static INLINE bool 137 __panels_overlapped(register const PANEL *pan1, register const PANEL *pan2) 138 { 139 if(!pan1 || !pan2) 140 return(FALSE); 141 142 dBug(("__panels_overlapped %s %s", USER_PTR(pan1->user), USER_PTR(pan2->user))); 143 /* pan1 intersects with pan2 ? */ 144 if( (((pan1->wstarty >= pan2->wstarty) && (pan1->wstarty < pan2->wendy)) || 145 ((pan2->wstarty >= pan1->wstarty) && (pan2->wstarty < pan1->wendy))) && 146 (((pan1->wstartx >= pan2->wstartx) && (pan1->wstartx < pan2->wendx)) || 147 ((pan2->wstartx >= pan1->wstartx) && (pan2->wstartx < pan1->wendx))) 148 ) return(TRUE); 149 else { 150 dBug((" no")); 151 return(FALSE); 152 } 153 } 154 155 /*+------------------------------------------------------------------------- 156 _nc_free_obscure(pan) 157 --------------------------------------------------------------------------*/ 158 void 159 _nc_free_obscure(PANEL *pan) 160 { 161 PANELCONS *tobs = pan->obscure; /* "this" one */ 162 PANELCONS *nobs; /* "next" one */ 163 164 while(tobs) 165 { 166 nobs = tobs->above; 167 free((char *)tobs); 168 tobs = nobs; 169 } 170 pan->obscure = (PANELCONS *)0; 171 } 172 173 /*+------------------------------------------------------------------------- 174 __override(pan,show) 175 --------------------------------------------------------------------------*/ 176 void 177 _nc_override(const PANEL *pan, int show) 178 { 179 int y; 180 PANEL *pan2; 181 PANELCONS *tobs = pan->obscure; /* "this" one */ 182 183 dBug(("_nc_override %s,%d", USER_PTR(pan->user),show)); 184 185 switch (show) 186 { 187 case P_TOUCH: 188 Touchpan(pan); 189 /* The following while loop will now mark all panel window lines 190 * obscured by use or obscuring us as touched, so they will be 191 * updated. 192 */ 193 break; 194 case P_UPDATE: 195 while(tobs && (tobs->pan != pan)) 196 tobs = tobs->above; 197 /* The next loop will now only go through the panels obscuring pan; 198 * it updates all the lines in the obscuring panels in sync. with 199 * the lines touched in pan itself. This is called in update_panels() 200 * in a loop from the bottom_panel to the top_panel, resulting in 201 * the desired update effect. 202 */ 203 break; 204 default: 205 return; 206 } 207 208 while(tobs) 209 { 210 if((pan2 = tobs->pan) != pan) { 211 dBug(("test obs pan=%s pan2=%s", USER_PTR(pan->user), USER_PTR(pan2->user))); 212 for(y = pan->wstarty; y < pan->wendy; y++) { 213 if( (y >= pan2->wstarty) && (y < pan2->wendy) && 214 ((is_linetouched(pan->win,y - pan->wstarty) == TRUE)) ) 215 Touchline(pan2,y - pan2->wstarty,1); 216 } 217 } 218 tobs = tobs->above; 219 } 220 } 221 222 /*+------------------------------------------------------------------------- 223 __calculate_obscure() 224 --------------------------------------------------------------------------*/ 225 void 226 _nc_calculate_obscure(void) 227 { 228 PANEL *pan; 229 PANEL *pan2; 230 PANELCONS *tobs; /* "this" one */ 231 PANELCONS *lobs = (PANELCONS *)0; /* last one */ 232 233 pan = _nc_bottom_panel; 234 while(pan) 235 { 236 if(pan->obscure) 237 _nc_free_obscure(pan); 238 dBug(("--> __calculate_obscure %s", USER_PTR(pan->user))); 239 lobs = (PANELCONS *)0; /* last one */ 240 pan2 = _nc_bottom_panel; 241 /* This loop builds a list of panels obsured by pan or obscuring 242 pan; pan itself is in the list; all panels before pan are 243 obscured by pan, all panels after pan are obscuring pan. */ 244 while(pan2) 245 { 246 if(__panels_overlapped(pan,pan2)) 247 { 248 if(!(tobs = (PANELCONS *)malloc(sizeof(PANELCONS)))) 249 return; 250 tobs->pan = pan2; 251 dPanel("obscured",pan2); 252 tobs->above = (PANELCONS *)0; 253 if(lobs) 254 lobs->above = tobs; 255 else 256 pan->obscure = tobs; 257 lobs = tobs; 258 } 259 pan2 = pan2->above; 260 } 261 _nc_override(pan,P_TOUCH); 262 pan = pan->above; 263 } 264 } 265 266 /*+------------------------------------------------------------------------- 267 _nc_panel_is_linked(pan) - check to see if panel is in the stack 268 --------------------------------------------------------------------------*/ 269 bool 270 _nc_panel_is_linked(const PANEL *pan) 271 { 272 /* This works! The only case where it would fail is, when the list has 273 only one element. But this could only be the pseudo panel at the bottom */ 274 return ( ((pan->above!=(PANEL *)0) || 275 (pan->below!=(PANEL *)0) || 276 (pan==_nc_bottom_panel)) ? TRUE : FALSE ); 277 } 278 279 280 /*+------------------------------------------------------------------------- 281 __panel_link_bottom(pan) - link panel into stack at bottom 282 --------------------------------------------------------------------------*/ 283 void 284 _nc_panel_link_bottom(PANEL *pan) 285 { 286 #ifdef TRACE 287 dStack("<lb%d>",1,pan); 288 if(_nc_panel_is_linked(pan)) 289 return; 290 #endif 291 292 pan->above = (PANEL *)0; 293 pan->below = (PANEL *)0; 294 if(_nc_bottom_panel) 295 { /* the stdscr pseudo panel always stays real bottom; 296 so we insert after bottom panel*/ 297 pan->below = _nc_bottom_panel; 298 pan->above = _nc_bottom_panel->above; 299 if (pan->above) 300 pan->above->below = pan; 301 _nc_bottom_panel->above = pan; 302 } 303 else 304 _nc_bottom_panel = pan; 305 if(!_nc_top_panel) 306 _nc_top_panel = pan; 307 assert(_nc_bottom_panel == _nc_stdscr_pseudo_panel); 308 _nc_calculate_obscure(); 309 dStack("<lb%d>",9,pan); 310 } 311