motif_l/m_func.c

   1 /*-
   2  * Copyright (c) 1996
   3  *      Rob Zimmermann.  All rights reserved.
   4  * Copyright (c) 1996
   5  *      Keith Bostic.  All rights reserved.
   6  *
   7  * See the LICENSE file for redistribution information.
   8  */
   9
  10 #include "config.h"
  11
  12 #ifndef lint
  13 static const char sccsid[] = "$Id: m_func.c,v 8.24 2000/07/05 11:33:18 skimo Exp $ (Berkeley) $Date: 2000/07/05 11:33:18 $";
  14 #endif /* not lint */
  15
  16 #include <sys/types.h>
  17 #include <sys/queue.h>
  18
  19 #include <Xm/PanedW.h>
  20 #include <Xm/ScrollBar.h>
  21
  22 #include <bitstring.h>
  23 #include <stdio.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26
  27 #include "../common/common.h"
  28 #include "../ipc/ip.h"
  29 #include "m_motif.h"
  30
  31 \f
  32 static int
  33 vi_addstr(ipvi, str1, len1)
  34         char *str1;
  35         u_int32_t len1;
  36 {
  37 #ifdef TRACE
  38         vtrace("addstr() {%.*s}\n", ipbp->len1, ipbp->str1);
  39 #endif
  40         /* Add to backing store. */
  41         memcpy(CharAt(__vi_screen, __vi_screen->cury, __vi_screen->curx),
  42             str1, len1);
  43         memset(FlagAt(__vi_screen, __vi_screen->cury, __vi_screen->curx),
  44             __vi_screen->color, len1);
  45
  46         /* Draw from backing store. */
  47         __vi_draw_text(__vi_screen,
  48             __vi_screen->cury, __vi_screen->curx, len1);
  49
  50         /* Advance the caret. */
  51         __vi_move_caret(__vi_screen,
  52             __vi_screen->cury, __vi_screen->curx + len1);
  53         return (0);
  54 }
  55
  56 static int
  57 vi_attribute(ipvi, val1, val2)
  58         u_int32_t val1;
  59         u_int32_t val2;
  60 {
  61         switch (val1) {
  62         case SA_ALTERNATE:
  63                 /* XXX: Nothing. */
  64                 break;
  65         case SA_INVERSE:
  66                 __vi_screen->color = val2;
  67                 break;
  68         }
  69         return (0);
  70 }
  71
  72 static int
  73 vi_bell(ipvi)
  74 {
  75         /*
  76          * XXX
  77          * Future... implement visible bell.
  78          */
  79         XBell(XtDisplay(__vi_screen->area), 0);
  80         return (0);
  81 }
  82
  83 static int
  84 vi_busyon(ipvi, str1, len1)
  85         char *str1;
  86         u_int32_t len1;
  87 {
  88         __vi_set_cursor(__vi_screen, 1);
  89         return (0);
  90 }
  91
  92 static int
  93 vi_busyoff(ipvi)
  94 {
  95         __vi_set_cursor(__vi_screen, 0);
  96         return (0);
  97 }
  98
  99 static int
 100 vi_clrtoeol(ipvi)
 101 {
 102         int len;
 103         char *ptr;
 104
 105         len = __vi_screen->cols - __vi_screen->curx;
 106         ptr = CharAt(__vi_screen, __vi_screen->cury, __vi_screen->curx);
 107
 108         /* Clear backing store. */
 109         memset(ptr, ' ', len);
 110         memset(FlagAt(__vi_screen, __vi_screen->cury, __vi_screen->curx),
 111             COLOR_STANDARD, len);
 112
 113         /* Draw from backing store. */
 114         __vi_draw_text(__vi_screen, __vi_screen->cury, __vi_screen->curx, len);
 115
 116         return (0);
 117 }
 118
 119 static int
 120 vi_deleteln(ipvi)
 121 {
 122         int y, rows, len, height, width;
 123
 124         y = __vi_screen->cury;
 125         rows = __vi_screen->rows - (y+1);
 126         len = __vi_screen->cols * rows;
 127
 128         /* Don't want to copy the caret! */
 129         __vi_erase_caret(__vi_screen);
 130
 131         /* Adjust backing store and the flags. */
 132         memmove(CharAt(__vi_screen, y, 0), CharAt(__vi_screen, y+1, 0), len);
 133         memmove(FlagAt(__vi_screen, y, 0), FlagAt(__vi_screen, y+1, 0), len);
 134
 135         /* Move the bits on the screen. */
 136         width = __vi_screen->ch_width * __vi_screen->cols;
 137         height = __vi_screen->ch_height * rows;
 138         XCopyArea(XtDisplay(__vi_screen->area),         /* display */
 139                   XtWindow(__vi_screen->area),          /* src */
 140                   XtWindow(__vi_screen->area),          /* dest */
 141                   __vi_copy_gc,                         /* context */
 142                   0, YTOP(__vi_screen, y+1),            /* srcx, srcy */
 143                   width, height,
 144                   0, YTOP(__vi_screen, y)               /* dstx, dsty */
 145                   );
 146         /* Need to let X take over. */
 147         XmUpdateDisplay(__vi_screen->area);
 148
 149         return (1);
 150 }
 151
 152 static int
 153 vi_discard(ipvi)
 154 {
 155         /* XXX: Nothing. */
 156         return (0);
 157 }
 158
 159 static int
 160 vi_insertln(ipvi)
 161 {
 162         int y, rows, height, width;
 163         char *from, *to;
 164
 165         y = __vi_screen->cury;
 166         rows = __vi_screen->rows - (1+y);
 167         from = CharAt(__vi_screen, y, 0),
 168         to = CharAt(__vi_screen, y+1, 0);
 169
 170         /* Don't want to copy the caret! */
 171         __vi_erase_caret(__vi_screen);
 172
 173         /* Adjust backing store. */
 174         memmove(to, from, __vi_screen->cols * rows);
 175         memset(from, ' ', __vi_screen->cols);
 176
 177         /* And the backing store. */
 178         from = FlagAt(__vi_screen, y, 0),
 179         to = FlagAt(__vi_screen, y+1, 0);
 180         memmove(to, from, __vi_screen->cols * rows);
 181         memset(from, COLOR_STANDARD, __vi_screen->cols);
 182
 183         /* Move the bits on the screen. */
 184         width = __vi_screen->ch_width * __vi_screen->cols;
 185         height = __vi_screen->ch_height * rows;
 186
 187         XCopyArea(XtDisplay(__vi_screen->area),         /* display */
 188                   XtWindow(__vi_screen->area),          /* src */
 189                   XtWindow(__vi_screen->area),          /* dest */
 190                   __vi_copy_gc,                         /* context */
 191                   0, YTOP(__vi_screen, y),              /* srcx, srcy */
 192                   width, height,
 193                   0, YTOP(__vi_screen, y+1)             /* dstx, dsty */
 194                   );
 195
 196         /* clear out the new space */
 197         XClearArea(XtDisplay(__vi_screen->area),        /* display */
 198                    XtWindow(__vi_screen->area),         /* window */
 199                    0, YTOP(__vi_screen, y),             /* srcx, srcy */
 200                    0, __vi_screen->ch_height,           /* w=full, height */
 201                    True                                 /* no exposures */
 202                    );
 203
 204         /* Need to let X take over. */
 205         XmUpdateDisplay(__vi_screen->area);
 206
 207         return (1);
 208 }
 209
 210 static int
 211 vi_move(ipvi, val1, val2)
 212         u_int32_t val1;
 213         u_int32_t val2;
 214 {
 215         __vi_move_caret(__vi_screen, val1, val2);
 216         return (0);
 217 }
 218
 219 static int
 220 vi_redraw(ipvi)
 221 {
 222         __vi_expose_func(0, __vi_screen, 0);
 223         return (0);
 224 }
 225
 226 static int
 227 vi_refresh(ipvi)
 228 {
 229         /* probably ok to scroll again */
 230         __vi_clear_scroll_block();
 231
 232         /* if the tag stack widget is active, set the text field there
 233          * to agree with the current caret position.
 234          * Note that this really ought to be done by core due to wrapping issues
 235          */
 236         __vi_set_word_at_caret( __vi_screen );
 237
 238         /* similarly, the text ruler... */
 239         __vi_set_text_ruler( __vi_screen->cury, __vi_screen->curx );
 240
 241         return (0);
 242 }
 243
 244 static int
 245 vi_quit(ipvi)
 246 {
 247         if (__vi_exitp != NULL)
 248                 __vi_exitp();
 249
 250         return (0);
 251 }
 252
 253 static int
 254 vi_rename(ipvi, str1, len1)
 255         char *str1;
 256         u_int32_t len1;
 257 {
 258         Widget shell;
 259         size_t len;
 260         const char *tail, *p;
 261
 262         /* For the icon, use the tail. */
 263         for (p = str1, len = len1; len > 1; ++p, --len)
 264                 if (p[0] == '/')
 265                         tail = p + 1;
 266         /*
 267          * XXX
 268          * Future:  Attach a title to each screen.  For now, we change
 269          * the title of the shell.
 270          */
 271         shell = __vi_screen->area;
 272         while ( ! XtIsShell(shell) ) shell = XtParent(shell);
 273         XtVaSetValues(shell,
 274                       XmNiconName,      tail,
 275                       XmNtitle,         str1,
 276                       0
 277                       );
 278         return (0);
 279 }
 280
 281 static int
 282 vi_rewrite(ipvi, val1)
 283         u_int32_t val1;
 284 {
 285         /* XXX: Nothing. */
 286         return (0);
 287 }
 288
 289
 290 static int
 291 vi_scrollbar(ipvi, val1, val2, val3)
 292         u_int32_t val1;
 293         u_int32_t val2;
 294         u_int32_t val3;
 295 {
 296         int top, size, maximum, old_max;
 297
 298         /* in the buffer,
 299          *      val1 contains the top visible line number
 300          *      val2 contains the number of visible lines
 301          *      val3 contains the number of lines in the file
 302          */
 303         top     = val1;
 304         size    = val2;
 305         maximum = val3;
 306
 307 #if 0
 308         fprintf( stderr, "Setting scrollbar\n" );
 309         fprintf( stderr, "\tvalue\t\t%d\n",     top );
 310         fprintf( stderr, "\tsize\t\t%d\n",      size );
 311         fprintf( stderr, "\tmaximum\t\t%d\n",   maximum );
 312 #endif
 313
 314         /* armor plating.  core thinks there are no lines in an
 315          * empty file, but says we are on line 1
 316          */
 317         if ( top >= maximum ) {
 318 #if 0
 319             fprintf( stderr, "Correcting for top >= maximum\n" );
 320 #endif
 321             maximum     = top + 1;
 322             size        = 1;
 323         }
 324
 325         /* armor plating.  core may think there are more
 326          * lines visible than remain in the file
 327          */
 328         if ( top+size >= maximum ) {
 329 #if 0
 330             fprintf( stderr, "Correcting for top+size >= maximum\n" );
 331 #endif
 332             size        = maximum - top;
 333         }
 334
 335         /* need to increase the maximum before changing the values */
 336         XtVaGetValues( __vi_screen->scroll, XmNmaximum, &old_max, 0 );
 337         if ( maximum > old_max )
 338             XtVaSetValues( __vi_screen->scroll, XmNmaximum, maximum, 0 );
 339
 340         /* change the rest of the values without generating a callback */
 341         XmScrollBarSetValues( __vi_screen->scroll,
 342                               top,
 343                               size,
 344                               1,        /* increment */
 345                               size,     /* page_increment */
 346                               False     /* do not notify me */
 347                               );
 348
 349         /* need to decrease the maximum after changing the values */
 350         if ( maximum < old_max )
 351             XtVaSetValues( __vi_screen->scroll, XmNmaximum, maximum, 0 );
 352
 353         /* done */
 354         return (0);
 355 }
 356
 357 static int
 358 vi_select(ipvi, str1, len1)
 359         char *str1;
 360         u_int32_t len1;
 361 {
 362         /* XXX: Nothing. */
 363         return (0);
 364 }
 365
 366 static int
 367 vi_split(ipvi)
 368 {
 369         /* XXX: Nothing. */
 370         return (0);
 371 }
 372
 373 IPSIOPS ipsi_ops_motif = {
 374         vi_addstr,
 375         vi_attribute,
 376         vi_bell,
 377         vi_busyoff,
 378         vi_busyon,
 379         vi_clrtoeol,
 380         vi_deleteln,
 381         vi_discard,
 382         __vi_editopt,
 383         vi_insertln,
 384         vi_move,
 385         vi_quit,
 386         vi_redraw,
 387         vi_refresh,
 388         vi_rename,
 389         vi_rewrite,
 390         vi_scrollbar,
 391         vi_select,
 392         vi_split,
 393 };