1 /**************************************************************************** 2 * Copyright (c) 1998 Free Software Foundation, Inc. * 3 * * 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: * 11 * * 12 * The above copyright notice and this permission notice shall be included * 13 * in all copies or substantial portions of the Software. * 14 * * 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. * 22 * * 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 * 26 * authorization. * 27 ****************************************************************************/ 28 29 /**************************************************************************** 30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1995 * 31 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 32 ****************************************************************************/ 33 34 /* panel.c -- implementation of panels library, some core routines */ 35 #include "panel.priv.h" 36 37 MODULE_ID("$Id: panel.c,v 1.16 1998/09/19 21:26:31 Todd.Miller Exp $") 38 39 #ifdef TRACE 40 #ifndef TRACE_TXT 41 const char *_nc_my_visbuf(const void *ptr) 42 { 43 char temp[32]; 44 if (ptr != 0) 45 sprintf(temp, "ptr:%p", ptr); 46 else 47 strcpy(temp, "<null>"); 48 return _nc_visbuf(temp); 49 } 50 #endif 51 #endif 52 53 54 /*+------------------------------------------------------------------------- 55 dPanel(text,pan) 56 --------------------------------------------------------------------------*/ 57 #ifdef TRACE 58 void 59 _nc_dPanel(const char *text, const PANEL *pan) 60 { 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); 66 } 67 #endif 68 69 /*+------------------------------------------------------------------------- 70 dStack(fmt,num,pan) 71 --------------------------------------------------------------------------*/ 72 #ifdef TRACE 73 void 74 _nc_dStack(const char *fmt, int num, const PANEL *pan) 75 { 76 char s80[80]; 77 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) : "--"); 82 if(pan) 83 _tracef("pan id=%s", USER_PTR(pan->user)); 84 pan = _nc_bottom_panel; 85 while(pan) 86 { 87 dPanel("stk",pan); 88 pan = pan->above; 89 } 90 } 91 #endif 92 93 /*+------------------------------------------------------------------------- 94 Wnoutrefresh(pan) - debugging hook for wnoutrefresh 95 --------------------------------------------------------------------------*/ 96 #ifdef TRACE 97 void 98 _nc_Wnoutrefresh(const PANEL *pan) 99 { 100 dPanel("wnoutrefresh",pan); 101 wnoutrefresh(pan->win); 102 } 103 #endif 104 105 /*+------------------------------------------------------------------------- 106 Touchpan(pan) 107 --------------------------------------------------------------------------*/ 108 #ifdef TRACE 109 void 110 _nc_Touchpan(const PANEL *pan) 111 { 112 dPanel("Touchpan",pan); 113 touchwin(pan->win); 114 } 115 #endif 116 117 /*+------------------------------------------------------------------------- 118 Touchline(pan,start,count) 119 --------------------------------------------------------------------------*/ 120 #ifdef TRACE 121 void 122 _nc_Touchline(const PANEL *pan, int start, int count) 123 { 124 char s80[80]; 125 sprintf(s80,"Touchline s=%d c=%d",start,count); 126 dPanel(s80,pan); 127 touchline(pan->win,start,count); 128 } 129 #endif 130 131 /*+------------------------------------------------------------------------- 132 __panels_overlapped(pan1,pan2) - check panel overlapped 133 --------------------------------------------------------------------------*/ 134 static INLINE bool 135 __panels_overlapped(register const PANEL *pan1, register const PANEL *pan2) 136 { 137 if(!pan1 || !pan2) 138 return(FALSE); 139 140 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))) 146 ) return(TRUE); 147 else { 148 dBug((" no")); 149 return(FALSE); 150 } 151 } 152 153 /*+------------------------------------------------------------------------- 154 _nc_free_obscure(pan) 155 --------------------------------------------------------------------------*/ 156 void 157 _nc_free_obscure(PANEL *pan) 158 { 159 PANELCONS *tobs = pan->obscure; /* "this" one */ 160 PANELCONS *nobs; /* "next" one */ 161 162 while(tobs) 163 { 164 nobs = tobs->above; 165 free((char *)tobs); 166 tobs = nobs; 167 } 168 pan->obscure = (PANELCONS *)0; 169 } 170 171 /*+------------------------------------------------------------------------- 172 __override(pan,show) 173 --------------------------------------------------------------------------*/ 174 void 175 _nc_override(const PANEL *pan, int show) 176 { 177 int y; 178 PANEL *pan2; 179 PANELCONS *tobs = pan->obscure; /* "this" one */ 180 181 dBug(("_nc_override %s,%d", USER_PTR(pan->user),show)); 182 183 switch (show) 184 { 185 case P_TOUCH: 186 Touchpan(pan); 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 189 * updated. 190 */ 191 break; 192 case P_UPDATE: 193 while(tobs && (tobs->pan != pan)) 194 tobs = tobs->above; 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. 200 */ 201 break; 202 default: 203 return; 204 } 205 206 while(tobs) 207 { 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); 214 } 215 } 216 tobs = tobs->above; 217 } 218 } 219 220 /*+------------------------------------------------------------------------- 221 __calculate_obscure() 222 --------------------------------------------------------------------------*/ 223 void 224 _nc_calculate_obscure(void) 225 { 226 PANEL *pan; 227 PANEL *pan2; 228 PANELCONS *tobs; /* "this" one */ 229 PANELCONS *lobs = (PANELCONS *)0; /* last one */ 230 231 pan = _nc_bottom_panel; 232 while(pan) 233 { 234 if(pan->obscure) 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. */ 242 while(pan2) 243 { 244 if(__panels_overlapped(pan,pan2)) 245 { 246 if(!(tobs = (PANELCONS *)malloc(sizeof(PANELCONS)))) 247 return; 248 tobs->pan = pan2; 249 dPanel("obscured",pan2); 250 tobs->above = (PANELCONS *)0; 251 if(lobs) 252 lobs->above = tobs; 253 else 254 pan->obscure = tobs; 255 lobs = tobs; 256 } 257 pan2 = pan2->above; 258 } 259 _nc_override(pan,P_TOUCH); 260 pan = pan->above; 261 } 262 } 263 264 /*+------------------------------------------------------------------------- 265 _nc_panel_is_linked(pan) - check to see if panel is in the stack 266 --------------------------------------------------------------------------*/ 267 bool 268 _nc_panel_is_linked(const PANEL *pan) 269 { 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 ); 275 } 276 277 278 /*+------------------------------------------------------------------------- 279 __panel_link_bottom(pan) - link panel into stack at bottom 280 --------------------------------------------------------------------------*/ 281 void 282 _nc_panel_link_bottom(PANEL *pan) 283 { 284 #ifdef TRACE 285 dStack("<lb%d>",1,pan); 286 if(_nc_panel_is_linked(pan)) 287 return; 288 #endif 289 290 pan->above = (PANEL *)0; 291 pan->below = (PANEL *)0; 292 if(_nc_bottom_panel) 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; 297 if (pan->above) 298 pan->above->below = pan; 299 _nc_bottom_panel->above = pan; 300 } 301 else 302 _nc_bottom_panel = pan; 303 if(!_nc_top_panel) 304 _nc_top_panel = pan; 305 assert(_nc_bottom_panel == _nc_stdscr_pseudo_panel); 306 _nc_calculate_obscure(); 307 dStack("<lb%d>",9,pan); 308 } 309