gtkedit/editdraw.c

   1 /* editor text drawing.
   2
   3    Copyright (C) 1996, 1997 the Free Software Foundation
   4
   5    Authors: 1996, 1997 Paul Sheer
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  20    02111-1307, USA.
  21 */
  22
  23 #include <config.h>
  24 #include "edit.h"
  25
  26 #define MAX_LINE_LEN 1024
  27
  28 #if ! defined (MIDNIGHT) && ! defined (GTK)
  29 #include "app_glob.c"
  30 #include "coollocal.h"
  31 #include "mad.h"
  32 #endif
  33
  34 extern int column_highlighting;
  35
  36 #if defined (MIDNIGHT) || defined (GTK)
  37
  38 void status_string (WEdit * edit, char *s, int w, int fill, int font_width)
  39 {
  40 #ifdef MIDNIGHT
  41     int i;
  42 #endif
  43     char t[160];                /* 160 just to be sure */
  44 /* The field lengths just prevents the status line from shortening to much */
  45     sprintf (t, "[%c%c%c%c] %2ld:%3ld+%2ld=%3ld/%3ld - *%-4ld/%4ldb=%3d",
  46              edit->mark1 != edit->mark2 ? ( column_highlighting ? 'C' : 'B') : '-',
  47              edit->modified ? 'M' : '-', edit->macro_i < 0 ? '-' : 'R',
  48              edit->overwrite == 0 ? '-' : 'O',
  49              edit->curs_col / font_width, edit->start_line + 1, edit->curs_row,
  50              edit->curs_line + 1, edit->total_lines + 1, edit->curs1,
  51              edit->last_byte, edit->curs1 < edit->last_byte
  52              ? edit_get_byte (edit, edit->curs1) : -1);
  53 #ifdef MIDNIGHT
  54     sprintf (s, "%.*s", w + 1, t);
  55     i = strlen (s);
  56     s[i] = ' ';
  57     i = w;
  58     do {
  59         if (strchr ("+-*=/:b", s[i]))   /* chop off the last word/number */
  60             break;
  61         s[i] = fill;
  62     } while (i--);
  63     s[i] = fill;
  64     s[w] = 0;
  65 #else
  66     strcpy (s, t);
  67 #endif
  68 }
  69
  70 #endif
  71
  72 #ifdef MIDNIGHT
  73
  74 /* how to get as much onto the status line as is numerically possible :) */
  75 void edit_status (WEdit * edit)
  76 {
  77     int w, i, t;
  78     char *s;
  79     w = edit->widget.cols - (edit->have_frame * 2);
  80     s = malloc (w + 15);
  81     if (w < 4)
  82         w = 4;
  83     memset (s, ' ', w);
  84     attrset (SELECTED_COLOR);
  85     if (w > 4) {
  86         widget_move (edit, edit->have_frame, edit->have_frame);
  87         i = w > 24 ? 18 : w - 6;
  88         i = i < 13 ? 13 : i;
  89         sprintf (s, "%s", (char *) name_trunc (edit->filename ? edit->filename : "", i));
  90         i += strlen (s);
  91         s[strlen (s)] = ' ';
  92         t = w - 20;
  93         if (t < 0)
  94             t = 0;
  95         status_string (edit, s + 20, t, ' ', 1);
  96     } else {
  97         s[w] = 0;
  98     }
  99     printw ("%.*s", w, s);
 100     attrset (NORMAL_COLOR);
 101     free (s);
 102 }
 103
 104 #else
 105
 106 #ifndef GTK
 107 extern int fixed_font;
 108 #endif
 109
 110 void render_status (CWidget * wdt, int expose);
 111
 112 #ifdef GTK
 113
 114 void edit_status (WEdit *edit)
 115 {
 116     GtkEntry *entry;
 117     int w, i, t;
 118     char s[160];
 119     w = edit->num_widget_columns - 1;
 120     if (w > 150)
 121         w = 150;
 122     if (w < 0)
 123         w = 0;
 124     memset (s, 0, w);
 125     if (w > 1) {
 126         i = w > 24 ? 18 : w - 6;
 127         i = i < 13 ? 13 : i;
 128         sprintf (s, "%s", (char *) name_trunc (edit->filename ? edit->filename : "", i));
 129         i = strlen (s);
 130         s[i] = ' ';
 131         s[i + 1] = ' ';
 132         t = w - i - 2;
 133         if (t < 0)
 134             t = 0;
 135         status_string (edit, s + i + 2, t, 0, FONT_MEAN_WIDTH);
 136     }
 137     s[w] = 0;
 138     entry = GTK_ENTRY (edit->widget->status);
 139     if (strcmp (s, gtk_entry_get_text (entry)))
 140         gtk_entry_set_text (entry, s);
 141 }
 142
 143 #else
 144
 145 void edit_status (WEdit * edit)
 146 {
 147     long start_mark, end_mark;
 148     CWidget *wdt;
 149     mode_t m;
 150     char *p;
 151     char id[33];
 152     char s[256];
 153     if (eval_marks (edit, &start_mark, &end_mark))
 154         end_mark = start_mark = 0;
 155     if ((COptionsOf (edit->widget) & EDITOR_NO_TEXT))
 156         return;
 157     m = edit->stat.st_mode;
 158     p = edit->filename ? edit->filename : "";
 159     sprintf (s, "\034%c%s\033\035  \034-%c%c%c%c%c%c%c%c%c\035  \034%s%s%s%c\035  \034\030%02ld\033\035  \034%-4ld+%2ld=\030%4ld\033/%3ld\035  \034*%-5ld/%5ldb=%c%3d\035%c \034\001%ld\033\035",
 160              *p ? '\033' : '\003', *p ? (char *) name_trunc (p, max (edit->num_widget_lines / 3, 16)) : _ ("<unnamed>"),
 161              m & S_IRUSR ? 'r' : '-',
 162              m & S_IWUSR ? 'w' : '-',
 163              m & S_IXUSR ? 'x' : '-',
 164              m & S_IRGRP ? 'r' : '-',
 165              m & S_IWGRP ? 'w' : '-',
 166              m & S_IXGRP ? 'x' : '-',
 167              m & S_IROTH ? 'r' : '-',
 168              m & S_IWOTH ? 'w' : '-',
 169              m & S_IXOTH ? 'x' : '-',
 170              end_mark - start_mark || (edit->mark2 == -1 && !edit->highlight) ? (column_highlighting ? "\032C\033" : "\001B\033") : "-",
 171              edit->modified ? "\012M\033" : "-", edit->macro_i < 0 ? "-" : "\023R\033",
 172              edit->overwrite == 0 ? '-' : 'O',
 173              edit->curs_col / FONT_MEAN_WIDTH, edit->start_line + 1, edit->curs_row,
 174              edit->curs_line + 1, edit->total_lines + 1, edit->curs1,
 175              edit->last_byte, edit->curs1 == edit->last_byte ? '\014' : '\033', edit->curs1 < edit->last_byte
 176              ? edit_get_byte (edit, edit->curs1) : -1,
 177              end_mark - start_mark && !column_highlighting ? ' ' : '\0',
 178              end_mark - start_mark);
 179     strcpy (id, CIdentOf (edit->widget));
 180     strcat (id, ".text");
 181     wdt = CIdent (id);
 182     free (wdt->text);
 183     wdt->text = (char *) strdup (s);
 184     CSetWidgetSize (id, CWidthOf (edit->widget), CHeightOf (wdt));
 185     render_status (wdt, 0);
 186 }
 187
 188 #endif
 189
 190 #endif
 191
 192
 193 /* boolean */
 194 int cursor_in_screen (WEdit * edit, long row)
 195 {
 196     if (row < 0 || row >= edit->num_widget_lines)
 197         return 0;
 198     else
 199         return 1;
 200 }
 201
 202 /* returns rows from the first displayed line to the cursor */
 203 int cursor_from_display_top (WEdit * edit)
 204 {
 205     if (edit->curs1 < edit->start_display)
 206         return -edit_move_forward (edit, edit->curs1, 0, edit->start_display);
 207     else
 208         return edit_move_forward (edit, edit->start_display, 0, edit->curs1);
 209 }
 210
 211 /* returns how far the cursor is out of the screen */
 212 int cursor_out_of_screen (WEdit * edit)
 213 {
 214     int row = cursor_from_display_top (edit);
 215     if (row >= edit->num_widget_lines)
 216         return row - edit->num_widget_lines + 1;
 217     if (row < 0)
 218         return row;
 219     return 0;
 220 }
 221
 222 #ifndef MIDNIGHT
 223 extern unsigned char per_char[256];
 224 int edit_width_of_long_printable (int c);
 225 #endif
 226
 227 /* this scrolls the text so that cursor is on the screen */
 228 void edit_scroll_screen_over_cursor (WEdit * edit)
 229 {
 230     int p;
 231     int outby;
 232     int b_extreme, t_extreme, l_extreme, r_extreme;
 233     r_extreme = EDIT_RIGHT_EXTREME;
 234     l_extreme = EDIT_LEFT_EXTREME;
 235     b_extreme = EDIT_BOTTOM_EXTREME;
 236     t_extreme = EDIT_TOP_EXTREME;
 237     if (edit->found_len) {
 238         b_extreme = max (edit->num_widget_lines / 4, b_extreme);
 239         t_extreme = max (edit->num_widget_lines / 4, t_extreme);
 240     }
 241     if (b_extreme + t_extreme + 1 > edit->num_widget_lines) {
 242         int n;
 243         n = b_extreme + t_extreme;
 244         b_extreme = (b_extreme * (edit->num_widget_lines - 1)) / n;
 245         t_extreme = (t_extreme * (edit->num_widget_lines - 1)) / n;
 246     }
 247     if (l_extreme + r_extreme + 1 > edit->num_widget_columns) {
 248         int n;
 249         n = l_extreme + t_extreme;
 250         l_extreme = (l_extreme * (edit->num_widget_columns - 1)) / n;
 251         r_extreme = (r_extreme * (edit->num_widget_columns - 1)) / n;
 252     }
 253     p = edit_get_col (edit);
 254     edit_update_curs_row (edit);
 255 #ifdef MIDNIGHT
 256     outby = p + edit->start_col - edit->num_widget_columns + 1 + (r_extreme + edit->found_len);
 257 #else
 258     outby = p + edit->start_col - CWidthOf (edit->widget) + 7 + (r_extreme + edit->found_len) * FONT_MEAN_WIDTH + edit_width_of_long_printable (edit_get_byte (edit, edit->curs1));
 259 #endif
 260     if (outby > 0)
 261         edit_scroll_right (edit, outby);
 262 #ifdef MIDNIGHT
 263     outby = l_extreme - p - edit->start_col;
 264 #else
 265     outby = l_extreme * FONT_MEAN_WIDTH - p - edit->start_col;
 266 #endif
 267     if (outby > 0)
 268         edit_scroll_left (edit, outby);
 269     p = edit->curs_row;
 270     outby = p - edit->num_widget_lines + 1 + b_extreme;
 271     if (outby > 0)
 272         edit_scroll_downward (edit, outby);
 273     outby = t_extreme - p;
 274     if (outby > 0)
 275         edit_scroll_upward (edit, outby);
 276     edit_update_curs_row (edit);
 277 }
 278
 279
 280 #ifndef MIDNIGHT
 281
 282 #define CACHE_WIDTH 256
 283 #define CACHE_HEIGHT 128
 284
 285 int EditExposeRedraw = 0;
 286 int EditClear = 0;
 287
 288 /* background colors: marked is refers to mouse highlighting, highlighted refers to a found string. */
 289 unsigned long edit_abnormal_color, edit_marked_abnormal_color;
 290 unsigned long edit_highlighted_color, edit_marked_color;
 291 unsigned long edit_normal_background_color;
 292
 293 /* foreground colors */
 294 unsigned long edit_normal_foreground_color, edit_bold_color;
 295 unsigned long edit_italic_color;
 296
 297 /* cursor color */
 298 unsigned long edit_cursor_color;
 299
 300 void edit_set_foreground_colors (unsigned long normal, unsigned long bold, unsigned long italic)
 301 {
 302     edit_normal_foreground_color = normal;
 303     edit_bold_color = bold;
 304     edit_italic_color = italic;
 305 }
 306
 307 void edit_set_background_colors (unsigned long normal, unsigned long abnormal, unsigned long marked, unsigned long marked_abnormal, unsigned long highlighted)
 308 {
 309     edit_abnormal_color = abnormal;
 310     edit_marked_abnormal_color = marked_abnormal;
 311     edit_marked_color = marked;
 312     edit_highlighted_color = highlighted;
 313     edit_normal_background_color = normal;
 314 }
 315
 316 void edit_set_cursor_color (unsigned long c)
 317 {
 318     edit_cursor_color = c;
 319 }
 320
 321 #else
 322
 323 static void set_color (int font)
 324 {
 325     attrset (font);
 326 }
 327
 328 #define edit_move(x,y) widget_move(edit, y, x);
 329
 330 static void print_to_widget (WEdit * edit, long row, int start_col, float start_col_real, long end_col, unsigned int line[])
 331 {
 332     int x = (float) start_col_real + EDIT_TEXT_HORIZONTAL_OFFSET;
 333     int x1 = start_col + EDIT_TEXT_HORIZONTAL_OFFSET;
 334     int y = row + EDIT_TEXT_VERTICAL_OFFSET;
 335
 336     set_color (EDITOR_NORMAL_COLOR);
 337     edit_move (x1, y);
 338     hline (' ', end_col + 1 - EDIT_TEXT_HORIZONTAL_OFFSET - x1);
 339
 340     edit_move (x + FONT_OFFSET_X, y + FONT_OFFSET_Y);
 341     {
 342         unsigned int *p = line;
 343         int textchar = ' ';
 344         long style;
 345
 346         while (*p) {
 347             style = *p >> 8;
 348             textchar = *p & 0xFF;
 349 #ifdef HAVE_SYNTAXH
 350             if (!(style & (0xFF - MOD_ABNORMAL - MOD_CURSOR)))
 351                 SLsmg_set_color ((*p & 0x007F0000) >> 16);
 352 #endif
 353             if (style & MOD_ABNORMAL)
 354                 textchar = '.';
 355             if (style & MOD_HIGHLIGHTED) {
 356                 set_color (EDITOR_BOLD_COLOR);
 357             } else if (style & MOD_MARKED) {
 358                 set_color (EDITOR_MARKED_COLOR);
 359             }
 360             if (style & MOD_UNDERLINED) {
 361                 set_color (EDITOR_UNDERLINED_COLOR);
 362             }
 363             if (style & MOD_BOLD) {
 364                 set_color (EDITOR_BOLD_COLOR);
 365             }
 366             addch (textchar);
 367             p++;
 368         }
 369     }
 370 }
 371
 372 /* b pointer to begining of line */
 373 static void edit_draw_this_line (WEdit * edit, long b, long row, long start_col, long end_col)
 374 {
 375     static unsigned int line[MAX_LINE_LEN];
 376     unsigned int *p = line;
 377     long m1 = 0, m2 = 0, q, c1, c2;
 378     int col, start_col_real;
 379     unsigned int c;
 380     int fg, bg;
 381     int i, book_mark = -1;
 382
 383 #if 0
 384     if (!book_mark_query (edit, edit->start_line + row, &book_mark))
 385         book_mark = -1;
 386 #endif
 387
 388     edit_get_syntax_color (edit, b - 1, &fg, &bg);
 389     q = edit_move_forward3 (edit, b, start_col - edit->start_col, 0);
 390     start_col_real = (col = (int) edit_move_forward3 (edit, b, 0, q)) + edit->start_col;
 391     c1 = min (edit->column1, edit->column2);
 392     c2 = max (edit->column1, edit->column2);
 393
 394     if (col + 16 > -edit->start_col) {
 395         eval_marks (edit, &m1, &m2);
 396
 397         if (row <= edit->total_lines - edit->start_line) {
 398             while (col <= end_col - edit->start_col) {
 399                 *p = 0;
 400                 if (q == edit->curs1)
 401                     *p |= MOD_CURSOR * 256;
 402                 if (q >= m1 && q < m2) {
 403                     if (column_highlighting) {
 404                         int x;
 405                         x = edit_move_forward3 (edit, b, 0, q);
 406                         if (x >= c1 && x < c2)
 407                             *p |= MOD_MARKED * 256;
 408                     } else
 409                         *p |= MOD_MARKED * 256;
 410                 }
 411                 if (q == edit->bracket)
 412                     *p |= MOD_BOLD * 256;
 413                 if (q >= edit->found_start && q < edit->found_start + edit->found_len)
 414                     *p |= MOD_HIGHLIGHTED * 256;
 415                 c = edit_get_byte (edit, q);
 416 /* we don't use bg for mc - fg contains both */
 417                 if (book_mark == -1) {
 418                     edit_get_syntax_color (edit, q, &fg, &bg);
 419                     *p |= fg << 16;
 420                 } else {
 421                     *p |= book_mark << 16;
 422                 }
 423                 q++;
 424                 switch (c) {
 425                 case '\n':
 426                     col = end_col - edit->start_col + 1;        /* quit */
 427                     *(p++) |= ' ';
 428                     break;
 429                 case '\t':
 430                     i = TAB_SIZE - ((int) col % TAB_SIZE);
 431                     *p |= ' ';
 432                     c = *(p++) & (0xFFFFFFFF - MOD_CURSOR * 256);
 433                     col += i;
 434                     while (--i)
 435                         *(p++) = c;
 436                     break;
 437                 case '\r':
 438                     break;
 439                 default:
 440                     if (is_printable (c)) {
 441                         *(p++) |= c;
 442                     } else {
 443                         *(p++) = '.';
 444                         *p |= (256 * MOD_ABNORMAL);
 445                     }
 446                     col++;
 447                     break;
 448                 }
 449             }
 450         }
 451     } else {
 452         start_col_real = start_col = 0;
 453     }
 454     *p = 0;
 455
 456     print_to_widget (edit, row, start_col, start_col_real, end_col, line);
 457 }
 458
 459 #endif
 460
 461 #ifdef MIDNIGHT
 462
 463 #define key_pending(x) (!is_idle())
 464
 465 #else
 466
 467 int edit_mouse_pending (Window win);
 468 #define edit_draw_this_line edit_draw_this_line_proportional
 469
 470 static int key_pending (WEdit * edit)
 471 {
 472     static int flush = 0, line = 0;
 473 #ifdef GTK
 474     /* ******* */
 475 #else
 476     if (!edit) {
 477         flush = line = 0;
 478     } else if (!(edit->force & REDRAW_COMPLETELY) && !EditExposeRedraw) {
 479 /* this flushes the display in logarithmic intervals - so both fast and
 480    slow machines will get good performance vs nice-refreshing */
 481         if ((1 << flush) == ++line) {
 482             flush++;
 483             return CKeyPending ();
 484         }
 485     }
 486 #endif
 487     return 0;
 488 }
 489
 490 #endif
 491
 492
 493 /* b for pointer to begining of line */
 494 static void edit_draw_this_char (WEdit * edit, long curs, long row)
 495 {
 496     int b = edit_bol (edit, curs);
 497 #ifdef MIDNIGHT
 498     edit_draw_this_line (edit, b, row, 0, edit->num_widget_columns - 1);
 499 #else
 500     edit_draw_this_line (edit, b, row, 0, CWidthOf (edit->widget));
 501 #endif
 502 }
 503
 504 /* cursor must be in screen for other than REDRAW_PAGE passed in force */
 505 void render_edit_text (WEdit * edit, long start_row, long start_column, long end_row, long end_column)
 506 {
 507     long row = 0, curs_row;
 508     static int prev_curs_row = 0;
 509     static int prev_start_col = 0;
 510     static long prev_curs = 0;
 511
 512 #ifndef MIDNIGHT
 513     static unsigned long prev_win = 0;
 514 #endif
 515
 516     int force = edit->force;
 517     long b;
 518
 519 #ifndef MIDNIGHT
 520     key_pending (0);
 521 #endif
 522
 523 /*
 524    if the position of the page has not moved then we can draw the cursor character only.
 525    This will prevent line flicker when using arrow keys.
 526  */
 527     if ((!(force & REDRAW_CHAR_ONLY)) || (force & REDRAW_PAGE)
 528 #ifndef MIDNIGHT
 529 #ifdef GTK
 530         || prev_win != ((GdkWindowPrivate *) CWindowOf (edit->widget)->text_area)->xwindow
 531 #else
 532         || prev_win != CWindowOf (edit->widget)
 533 #endif
 534 #endif
 535         ) {
 536         if (!(force & REDRAW_IN_BOUNDS)) {      /* !REDRAW_IN_BOUNDS means to ignore bounds and redraw whole rows */
 537             start_row = 0;
 538             end_row = edit->num_widget_lines - 1;
 539             start_column = 0;
 540 #ifdef MIDNIGHT
 541             end_column = edit->num_widget_columns - 1;
 542 #else
 543             end_column = CWidthOf (edit->widget);
 544 #endif
 545         }
 546         if (force & REDRAW_PAGE) {
 547             row = start_row;
 548             b = edit_move_forward (edit, edit->start_display, start_row, 0);
 549             while (row <= end_row) {
 550                 if (key_pending (edit))
 551                     goto exit_render;
 552                 edit_draw_this_line (edit, b, row, start_column, end_column);
 553                 b = edit_move_forward (edit, b, 1, 0);
 554                 row++;
 555             }
 556         } else {
 557             curs_row = edit->curs_row;
 558
 559             if (force & REDRAW_BEFORE_CURSOR) {
 560                 if (start_row < curs_row) {
 561                     long upto = curs_row - 1 <= end_row ? curs_row - 1 : end_row;
 562                     row = start_row;
 563                     b = edit->start_display;
 564                     while (row <= upto) {
 565                         if (key_pending (edit))
 566                             goto exit_render;
 567                         edit_draw_this_line (edit, b, row, start_column, end_column);
 568                         b = edit_move_forward (edit, b, 1, 0);
 569                     }
 570                 }
 571             }
 572 /*          if (force & REDRAW_LINE) {          ---> default */
 573             b = edit_bol (edit, edit->curs1);
 574             if (curs_row >= start_row && curs_row <= end_row) {
 575                 if (key_pending (edit))
 576                     goto exit_render;
 577                 edit_draw_this_line (edit, b, curs_row, start_column, end_column);
 578             }
 579             if (force & REDRAW_AFTER_CURSOR) {
 580                 if (end_row > curs_row) {
 581                     row = curs_row + 1 < start_row ? start_row : curs_row + 1;
 582                     b = edit_move_forward (edit, b, 1, 0);
 583                     while (row <= end_row) {
 584                         if (key_pending (edit))
 585                             goto exit_render;
 586                         edit_draw_this_line (edit, b, row, start_column, end_column);
 587                         b = edit_move_forward (edit, b, 1, 0);
 588                         row++;
 589                     }
 590                 }
 591             }
 592             if (force & REDRAW_LINE_ABOVE && curs_row >= 1) {
 593                 row = curs_row - 1;
 594                 b = edit_move_backward (edit, edit_bol (edit, edit->curs1), 1);
 595                 if (row >= start_row && row <= end_row) {
 596                     if (key_pending (edit))
 597                         goto exit_render;
 598                     edit_draw_this_line (edit, b, row, start_column, end_column);
 599                 }
 600             }
 601             if (force & REDRAW_LINE_BELOW && row < edit->num_widget_lines - 1) {
 602                 row = curs_row + 1;
 603                 b = edit_bol (edit, edit->curs1);
 604                 b = edit_move_forward (edit, b, 1, 0);
 605                 if (row >= start_row && row <= end_row) {
 606                     if (key_pending (edit))
 607                         goto exit_render;
 608                     edit_draw_this_line (edit, b, row, start_column, end_column);
 609                 }
 610             }
 611         }
 612     } else {
 613         if (prev_curs_row < edit->curs_row) {   /* with the new text highlighting, we must draw from the top down */
 614             edit_draw_this_char (edit, prev_curs, prev_curs_row);
 615             edit_draw_this_char (edit, edit->curs1, edit->curs_row);
 616         } else {
 617             edit_draw_this_char (edit, edit->curs1, edit->curs_row);
 618             edit_draw_this_char (edit, prev_curs, prev_curs_row);
 619         }
 620     }
 621
 622     edit->force = 0;
 623
 624     prev_curs_row = edit->curs_row;
 625     prev_curs = edit->curs1;
 626     prev_start_col = edit->start_col;
 627 #ifndef MIDNIGHT
 628 #ifdef GTK
 629     prev_win = ((GdkWindowPrivate *) CWindowOf (edit->widget)->text_area)->xwindow;
 630 #else
 631     prev_win = CWindowOf (edit->widget);
 632 #endif
 633 #endif
 634   exit_render:
 635     return;
 636 }
 637
 638
 639
 640 #ifndef MIDNIGHT
 641
 642 void edit_convert_expose_to_area (XExposeEvent * xexpose, int *row1, int *col1, int *row2, int *col2)
 643 {
 644     *col1 = xexpose->x - EDIT_TEXT_HORIZONTAL_OFFSET;
 645     *row1 = (xexpose->y - EDIT_TEXT_VERTICAL_OFFSET) / FONT_PIX_PER_LINE;
 646     *col2 = xexpose->x + xexpose->width + EDIT_TEXT_HORIZONTAL_OFFSET + 3;
 647     *row2 = (xexpose->y + xexpose->height - EDIT_TEXT_VERTICAL_OFFSET) / FONT_PIX_PER_LINE;
 648 }
 649
 650 #ifdef GTK
 651
 652 void edit_render_tidbits (GtkEdit * edit)
 653 {
 654     gtk_widget_draw_focus (GTK_WIDGET (edit));
 655 }
 656
 657 #else
 658
 659 void edit_render_tidbits (CWidget * wdt)
 660 {
 661     int isfocussed;
 662     int w = wdt->width, h = wdt->height;
 663     Window win;
 664
 665     win = wdt->winid;
 666     isfocussed = (win == CGetFocus ());
 667
 668     CSetColor (COLOR_FLAT);
 669
 670     if (isfocussed) {
 671         render_bevel (win, 0, 0, w - 1, h - 1, 3, 1);   /*most outer border bevel */
 672     } else {
 673         render_bevel (win, 2, 2, w - 3, h - 3, 1, 1);   /*border bevel */
 674         render_bevel (win, 0, 0, w - 1, h - 1, 2, 0);   /*most outer border bevel */
 675     }
 676 }
 677
 678 #endif
 679
 680 void edit_set_space_width (int s);
 681 extern int option_long_whitespace;
 682
 683 #endif
 684
 685 void edit_render (WEdit * edit, int page, int row_start, int col_start, int row_end, int col_end)
 686 {
 687     int f = 0;
 688 #ifdef GTK
 689     GtkEdit *win;
 690 #endif
 691     if (page)                   /* if it was an expose event, 'page' would be set */
 692         edit->force |= REDRAW_PAGE | REDRAW_IN_BOUNDS;
 693     f = edit->force & (REDRAW_PAGE | REDRAW_COMPLETELY);
 694
 695 #ifdef MIDNIGHT
 696     if (edit->force & REDRAW_COMPLETELY)
 697         redraw_labels (edit->widget.parent, (Widget *) edit);
 698 #else
 699     if (option_long_whitespace)
 700         edit_set_space_width (per_char[' '] * 2);
 701     else
 702         edit_set_space_width (per_char[' ']);
 703 #ifdef GTK
 704     win = (GtkEdit *) edit->widget;
 705 #endif
 706     edit_set_foreground_colors (
 707                                  color_palette (option_editor_fg_normal),
 708                                    color_palette (option_editor_fg_bold),
 709                                    color_palette (option_editor_fg_italic)
 710         );
 711     edit_set_background_colors (
 712                                  color_palette (option_editor_bg_normal),
 713                                color_palette (option_editor_bg_abnormal),
 714                                  color_palette (option_editor_bg_marked),
 715                         color_palette (option_editor_bg_marked_abnormal),
 716                              color_palette (option_editor_bg_highlighted)
 717         );
 718     edit_set_cursor_color (
 719                               color_palette (option_editor_fg_cursor)
 720         );
 721
 722 #ifdef GTK
 723     /* *********** */
 724 #else
 725     if (!EditExposeRedraw)
 726         set_cursor_position (0, 0, 0, 0, 0, 0, 0, 0, 0);
 727 #endif
 728 #endif
 729
 730     render_edit_text (edit, row_start, col_start, row_end, col_end);
 731     if (edit->force)            /* edit->force != 0 means a key was pending and the redraw
 732                                    was halted, so next time we must redraw everything in case stuff
 733                                    was left undrawn from a previous key press */
 734         edit->force |= REDRAW_PAGE;
 735 #ifndef MIDNIGHT
 736     if (f) {
 737         edit_render_tidbits (edit->widget);
 738 #ifdef GTK
 739     /*  ***************** */
 740 #else
 741         CSetColor (edit_normal_background_color);
 742         CLine (CWindowOf (edit->widget), 3, 3, 3, CHeightOf (edit->widget) - 4);
 743 #endif
 744     }
 745 #endif
 746 }
 747
 748 #ifndef MIDNIGHT
 749 void edit_render_expose (WEdit * edit, XExposeEvent * xexpose)
 750 {
 751     int row_start, col_start, row_end, col_end;
 752     EditExposeRedraw = 1;
 753     edit->num_widget_lines = (CHeightOf (edit->widget) - EDIT_FRAME_H) / FONT_PIX_PER_LINE;
 754     edit->num_widget_columns = (CWidthOf (edit->widget) - EDIT_FRAME_W) / FONT_MEAN_WIDTH;
 755     if (edit->force & (REDRAW_PAGE | REDRAW_COMPLETELY)) {
 756         edit->force |= REDRAW_PAGE | REDRAW_COMPLETELY;
 757         edit_render_keypress (edit);
 758     } else {
 759         edit_convert_expose_to_area (xexpose, &row_start, &col_start, &row_end, &col_end);
 760         edit_render (edit, 1, row_start, col_start, row_end, col_end);
 761     }
 762     EditExposeRedraw = 0;
 763 }
 764
 765 void edit_render_keypress (WEdit * edit)
 766 {
 767     edit_render (edit, 0, 0, 0, 0, 0);
 768 }
 769
 770 #else
 771
 772 void edit_render_keypress (WEdit * edit)
 773 {
 774     edit_render (edit, 0, 0, 0, 0, 0);
 775 }
 776
 777 #endif