src/editor/editwidget.c

src/editor/editwidget.c
Manual pages: mc • mcdiff • mcedit • mcview
/* */
This source file includes following definitions.
edit_dlg_init
edit_dlg_deinit
edit_about
edit_help
edit_restore_size
edit_window_move
edit_window_resize
get_hotkey
edit_window_list
edit_get_shortcut
edit_get_title
edit_dialog_command_execute
edit_translate_key
edit_quit
edit_set_buttonbar
edit_total_update
edit_update_cursor
edit_dialog_callback
edit_dialog_mouse_callback
edit_dialog_bg_callback
edit_callback
edit_mouse_handle_move_resize
edit_mouse_callback
edit_file
edit_files
edit_find_editor
edit_widget_is_editor
edit_update_screen
edit_save_size
edit_add_window
edit_handle_move_resize
edit_toggle_fullscreen
   1 /*
   2    Editor initialisation and callback handler.
   3 
   4    Copyright (C) 1996-2026
   5    Free Software Foundation, Inc.
   6 
   7    Written by:
   8    Paul Sheer, 1996, 1997
   9    Andrew Borodin <aborodin@vmail.ru> 2012-2024
  10 
  11    This file is part of the Midnight Commander.
  12 
  13    The Midnight Commander is free software: you can redistribute it
  14    and/or modify it under the terms of the GNU General Public License as
  15    published by the Free Software Foundation, either version 3 of the License,
  16    or (at your option) any later version.
  17 
  18    The Midnight Commander is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21    GNU General Public License for more details.
  22 
  23    You should have received a copy of the GNU General Public License
  24    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  25  */
  26 
  27 /** \file
  28  *  \brief Source: editor initialisation and callback handler
  29  *  \author Paul Sheer
  30  *  \date 1996, 1997
  31  */
  32 
  33 #include <config.h>
  34 
  35 #include <ctype.h>
  36 #include <errno.h>
  37 #include <stdlib.h>
  38 #include <string.h>
  39 #include <sys/types.h>
  40 #include <unistd.h>
  41 
  42 #include "lib/global.h"
  43 
  44 #include "lib/tty/tty.h"    // LINES, COLS
  45 #include "lib/tty/key.h"    // is_idle(), bracketed_pasting_in_progress
  46 #include "lib/tty/color.h"  // tty_setcolor()
  47 #include "lib/skin.h"
  48 #include "lib/fileloc.h"  // EDIT_HOME_DIR
  49 #include "lib/strutil.h"  // str_term_trim()
  50 #include "lib/util.h"     // mc_build_filename()
  51 #include "lib/widget.h"
  52 #include "lib/mcconfig.h"
  53 #include "lib/event.h"  // mc_event_raise()
  54 #include "lib/charsets.h"
  55 
  56 #include "src/keymap.h"           // keybind_lookup_keymap_command()
  57 #include "src/setup.h"            // home_dir
  58 #include "src/execute.h"          // toggle_subshell()
  59 #include "src/filemanager/cmd.h"  // save_setup_cmd()
  60 #include "src/learn.h"            // learn_keys()
  61 
  62 #include "edit-impl.h"
  63 #include "editwidget.h"
  64 #include "editmacros.h"  // edit_execute_macro()
  65 #ifdef HAVE_ASPELL
  66 #include "spell.h"
  67 #endif
  68 
  69 /*** global variables ****************************************************************************/
  70 
  71 char *edit_window_state_char = NULL;
  72 char *edit_window_close_char = NULL;
  73 
  74 /*** file scope macro definitions ****************************************************************/
  75 
  76 #define WINDOW_MIN_LINES (2 + 2)
  77 #define WINDOW_MIN_COLS  (2 + LINE_STATE_WIDTH + 2)
  78 
  79 /*** file scope type declarations ****************************************************************/
  80 
  81 /*** forward declarations (file scope functions) *************************************************/
  82 
  83 /*** file scope variables ************************************************************************/
  84 
  85 static unsigned int edit_dlg_init_refcounter = 0;
  86 
  87 /* --------------------------------------------------------------------------------------------- */
  88 /*** file scope functions ************************************************************************/
  89 /* --------------------------------------------------------------------------------------------- */
  90 /**
  91  * Init the 'edit' subsystem
  92  */
  93 
  94 static void
  95 edit_dlg_init (void)
     /*   */
  96 {
  97     edit_dlg_init_refcounter++;
  98 
  99     if (edit_dlg_init_refcounter == 1)
 100     {
 101         edit_window_state_char = mc_skin_get ("widget-editor", "window-state-char", "*");
 102         edit_window_close_char = mc_skin_get ("widget-editor", "window-close-char", "X");
 103 
 104 #ifdef HAVE_ASPELL
 105         aspell_init ();
 106 #endif
 107     }
 108 }
 109 
 110 /* --------------------------------------------------------------------------------------------- */
 111 /**
 112  * Deinit the 'edit' subsystem
 113  */
 114 
 115 static void
 116 edit_dlg_deinit (void)
     /*   */
 117 {
 118     if (edit_dlg_init_refcounter == 1)
 119     {
 120         g_free (edit_window_state_char);
 121         g_free (edit_window_close_char);
 122 
 123 #ifdef HAVE_ASPELL
 124         aspell_clean ();
 125 #endif
 126     }
 127 
 128     if (edit_dlg_init_refcounter != 0)
 129         edit_dlg_init_refcounter--;
 130 }
 131 
 132 /* --------------------------------------------------------------------------------------------- */
 133 /**
 134  * Show info about editor
 135  */
 136 
 137 static void
 138 edit_about (void)
     /*   */
 139 {
 140     char *version;
 141     char *package_copyright;
 142     char *description;
 143 
 144     version = g_strdup_printf ("MCEdit %s", mc_global.mc_version);
 145     package_copyright = mc_get_package_copyright ();
 146     description =
 147         g_strdup_printf (_ ("A user friendly text editor\nwritten for the %s."), PACKAGE_NAME);
 148 
 149     {
 150         quick_widget_t quick_widgets[] = {
 151             QUICK_LABEL (version, NULL),
 152             QUICK_SEPARATOR (TRUE),
 153             QUICK_LABEL (description, NULL),
 154             QUICK_SEPARATOR (FALSE),
 155             QUICK_LABEL (package_copyright, NULL),
 156             QUICK_START_BUTTONS (TRUE, TRUE),
 157             QUICK_BUTTON (_ ("&OK"), B_ENTER, NULL, NULL),
 158             QUICK_END,
 159         };
 160 
 161         WRect r = { -1, -1, 0, 40 };
 162 
 163         quick_dialog_t qdlg = {
 164             .rect = r,
 165             .title = _ ("About"),
 166             .help = "[Internal File Editor]",
 167             .widgets = quick_widgets,
 168             .callback = NULL,
 169             .mouse_callback = NULL,
 170         };
 171 
 172         quick_widgets[0].pos_flags = WPOS_KEEP_TOP | WPOS_CENTER_HORZ;
 173         quick_widgets[2].pos_flags = WPOS_KEEP_TOP | WPOS_CENTER_HORZ;
 174         quick_widgets[4].pos_flags = WPOS_KEEP_TOP | WPOS_CENTER_HORZ;
 175 
 176         (void) quick_dialog (&qdlg);
 177     }
 178 
 179     g_free (version);
 180     g_free (package_copyright);
 181     g_free (description);
 182 }
 183 
 184 /* --------------------------------------------------------------------------------------------- */
 185 /**
 186  * Show a help window
 187  */
 188 
 189 static void
 190 edit_help (const WDialog *h)
     /*   */
 191 {
 192     ev_help_t event_data = { NULL, h->help_ctx };
 193 
 194     mc_event_raise (MCEVENT_GROUP_CORE, "help", &event_data);
 195 }
 196 
 197 /* --------------------------------------------------------------------------------------------- */
 198 /**
 199  * Restore saved window size.
 200  *
 201  * @param edit editor object
 202  */
 203 
 204 static void
 205 edit_restore_size (WEdit *edit)
     /*   */
 206 {
 207     Widget *w = WIDGET (edit);
 208 
 209     edit->drag_state = MCEDIT_DRAG_NONE;
 210     w->mouse.forced_capture = FALSE;
 211     widget_set_size_rect (w, &edit->loc_prev);
 212     widget_draw (WIDGET (w->owner));
 213 }
 214 
 215 /* --------------------------------------------------------------------------------------------- */
 216 /**
 217  * Move window by one row or column in any direction.
 218  *
 219  * @param edit    editor object
 220  * @param command direction (CK_Up, CK_Down, CK_Left, CK_Right)
 221  */
 222 
 223 static void
 224 edit_window_move (WEdit *edit, long command)
     /*   */
 225 {
 226     Widget *we = WIDGET (edit);
 227     Widget *wo = WIDGET (we->owner);
 228     WRect *w = &we->rect;
 229     const WRect *wh = &wo->rect;
 230 
 231     switch (command)
 232     {
 233     case CK_Up:
 234         if (w->y > wh->y + 1)  // menubar
 235             w->y--;
 236         break;
 237     case CK_Down:
 238         if (w->y < wh->y + wh->lines - 2)  // buttonbar
 239             w->y++;
 240         break;
 241     case CK_Left:
 242         if (w->x + wh->cols > wh->x)
 243             w->x--;
 244         break;
 245     case CK_Right:
 246         if (w->x < wh->x + wh->cols)
 247             w->x++;
 248         break;
 249     default:
 250         return;
 251     }
 252 
 253     edit->force |= REDRAW_PAGE;
 254     widget_draw (wo);
 255 }
 256 
 257 /* --------------------------------------------------------------------------------------------- */
 258 /**
 259  * Resize window by one row or column in any direction.
 260  *
 261  * @param edit    editor object
 262  * @param command direction (CK_Up, CK_Down, CK_Left, CK_Right)
 263  */
 264 
 265 static void
 266 edit_window_resize (WEdit *edit, long command)
     /*   */
 267 {
 268     Widget *we = WIDGET (edit);
 269     Widget *wo = WIDGET (we->owner);
 270     WRect *w = &we->rect;
 271     const WRect *wh = &wo->rect;
 272 
 273     switch (command)
 274     {
 275     case CK_Up:
 276         if (w->lines > WINDOW_MIN_LINES)
 277             w->lines--;
 278         break;
 279     case CK_Down:
 280         if (w->y + w->lines < wh->y + wh->lines - 1)  // buttonbar
 281             w->lines++;
 282         break;
 283     case CK_Left:
 284         if (w->cols > WINDOW_MIN_COLS)
 285             w->cols--;
 286         break;
 287     case CK_Right:
 288         if (w->x + w->cols < wh->x + wh->cols)
 289             w->cols++;
 290         break;
 291     default:
 292         return;
 293     }
 294 
 295     edit->force |= REDRAW_COMPLETELY;
 296     widget_draw (wo);
 297 }
 298 
 299 /* --------------------------------------------------------------------------------------------- */
 300 /**
 301  * Get hotkey by number.
 302  *
 303  * @param n number
 304  * @return hotkey
 305  */
 306 
 307 static unsigned char
 308 get_hotkey (int n)
     /*   */
 309 {
 310     return (n <= 9) ? '0' + n : 'a' + n - 10;
 311 }
 312 
 313 /* --------------------------------------------------------------------------------------------- */
 314 
 315 static void
 316 edit_window_list (const WDialog *h)
     /*   */
 317 {
 318     const WGroup *g = CONST_GROUP (h);
 319     const size_t offset = 3;  // skip background, menu, and buttonbar
 320     const size_t dlg_num = g_list_length (g->widgets) - offset;
 321     int lines, cols;
 322     Listbox *listbox;
 323     GList *w;
 324     WEdit *selected;
 325     int i = 0;
 326 
 327     lines = MIN ((size_t) (LINES * 2 / 3), dlg_num);
 328     cols = COLS * 2 / 3;
 329 
 330     listbox = listbox_window_new (lines, cols, _ ("Open files"), "[Open files]");
 331 
 332     const size_t fname_offset = 2;  // marker and space
 333     const size_t fname_max_width = WIDGET (listbox->list)->rect.cols - fname_offset;
 334 
 335     for (w = g->widgets; w != NULL; w = g_list_next (w))
 336         if (edit_widget_is_editor (CONST_WIDGET (w->data)))
 337         {
 338             WEdit *e = EDIT (w->data);
 339             const char *fname;
 340             char *item_text;
 341 
 342             if (e->filename_vpath == NULL)
 343                 fname = _ ("[NoName]");
 344             else
 345                 fname = vfs_path_as_str (e->filename_vpath);
 346 
 347             const char *displayed_fname = str_term_trim (fname, fname_max_width);
 348 
 349             item_text = g_strdup_printf ("%c %s", e->modified != 0 ? '*' : ' ', displayed_fname);
 350 
 351             listbox_add_item_take (listbox->list, LISTBOX_APPEND_AT_END, get_hotkey (i++),
 352                                    item_text, e, FALSE);
 353         }
 354 
 355     selected = listbox_run_with_data (listbox, g->current->data);
 356     if (selected != NULL)
 357         widget_select (WIDGET (selected));
 358 }
 359 
 360 /* --------------------------------------------------------------------------------------------- */
 361 
 362 static char *
 363 edit_get_shortcut (long command)
     /*   */
 364 {
 365     const char *ext_map;
 366     const char *shortcut = NULL;
 367 
 368     shortcut = keybind_lookup_keymap_shortcut (editor_map, command);
 369     if (shortcut != NULL)
 370         return g_strdup (shortcut);
 371 
 372     ext_map = keybind_lookup_keymap_shortcut (editor_map, CK_ExtendedKeyMap);
 373     if (ext_map != NULL)
 374         shortcut = keybind_lookup_keymap_shortcut (editor_x_map, command);
 375     if (shortcut != NULL)
 376         return g_strdup_printf ("%s %s", ext_map, shortcut);
 377 
 378     return NULL;
 379 }
 380 
 381 /* --------------------------------------------------------------------------------------------- */
 382 
 383 static char *
 384 edit_get_title (const WDialog *h, const ssize_t width)
     /*   */
 385 {
 386     const WEdit *edit;
 387     const char *modified;
 388     const char *file_label;
 389     char *filename;
 390 
 391     edit = edit_find_editor (h);
 392     modified = edit->modified != 0 ? "(*) " : "    ";
 393 
 394     const ssize_t width1 = width - strlen (modified);
 395 
 396     if (edit->filename_vpath == NULL)
 397         filename = g_strdup (_ ("[NoName]"));
 398     else
 399         filename = g_strdup (vfs_path_as_str (edit->filename_vpath));
 400 
 401     file_label = str_term_trim (filename, width1 - str_term_width1 (_ ("Edit: ")));
 402     g_free (filename);
 403 
 404     return g_strconcat (_ ("Edit: "), modified, file_label, (char *) NULL);
 405 }
 406 
 407 /* --------------------------------------------------------------------------------------------- */
 408 
 409 static cb_ret_t
 410 edit_dialog_command_execute (WDialog *h, long command)
     /*   */
 411 {
 412     WGroup *g = GROUP (h);
 413     cb_ret_t ret = MSG_HANDLED;
 414 
 415     switch (command)
 416     {
 417     case CK_EditNew:
 418         edit_load_file_from_filename (h, NULL);
 419         break;
 420     case CK_EditFile:
 421         edit_load_cmd (h);
 422         break;
 423     case CK_History:
 424         edit_load_file_from_history (h);
 425         break;
 426     case CK_EditSyntaxFile:
 427         edit_load_syntax_file (h);
 428         break;
 429     case CK_EditUserMenu:
 430         edit_load_menu_file (h);
 431         break;
 432     case CK_Close:
 433         // if there are no opened files anymore, close MC editor
 434         if (edit_widget_is_editor (CONST_WIDGET (g->current->data))
 435             && edit_close_cmd (EDIT (g->current->data)) && edit_find_editor (h) == NULL)
 436             dlg_close (h);
 437         break;
 438     case CK_Help:
 439         edit_help (h);
 440         break;
 441     case CK_Menu:
 442         edit_menu_cmd (h);
 443         break;
 444     case CK_Quit:
 445     case CK_Cancel:
 446         // don't close editor due to SIGINT, but stop move/resize window
 447         {
 448             Widget *w = WIDGET (g->current->data);
 449 
 450             if (edit_widget_is_editor (w) && EDIT (w)->drag_state != MCEDIT_DRAG_NONE)
 451                 edit_restore_size (EDIT (w));
 452             else if (command == CK_Quit)
 453                 dlg_close (h);
 454         }
 455         break;
 456     case CK_About:
 457         edit_about ();
 458         break;
 459     case CK_SyntaxOnOff:
 460         edit_syntax_onoff_cmd (h);
 461         break;
 462     case CK_ShowTabTws:
 463         edit_show_tabs_tws_cmd (h);
 464         break;
 465     case CK_ShowMargin:
 466         edit_show_margin_cmd (h);
 467         break;
 468     case CK_ShowNumbers:
 469         edit_show_numbers_cmd (h);
 470         break;
 471     case CK_Refresh:
 472         edit_refresh_cmd ();
 473         break;
 474     case CK_Shell:
 475         toggle_subshell ();
 476         break;
 477     case CK_LearnKeys:
 478         learn_keys ();
 479         break;
 480     case CK_WindowMove:
 481     case CK_WindowResize:
 482         if (edit_widget_is_editor (CONST_WIDGET (g->current->data)))
 483             edit_handle_move_resize (EDIT (g->current->data), command);
 484         break;
 485     case CK_WindowList:
 486         edit_window_list (h);
 487         break;
 488     case CK_WindowNext:
 489         group_select_next_widget (g);
 490         break;
 491     case CK_WindowPrev:
 492         group_select_prev_widget (g);
 493         break;
 494     case CK_Options:
 495         edit_options_dialog (h);
 496         break;
 497     case CK_OptionsSaveMode:
 498         edit_save_mode_cmd ();
 499         break;
 500     case CK_SaveSetup:
 501         save_setup_cmd ();
 502         break;
 503     default:
 504         ret = MSG_NOT_HANDLED;
 505         break;
 506     }
 507 
 508     return ret;
 509 }
 510 
 511 /* --------------------------------------------------------------------------------------------- */
 512 /*
 513  * Translate the keycode into either 'command' or 'char_for_insertion'.
 514  * 'command' is one of the editor commands from lib/keybind.h.
 515  */
 516 
 517 static gboolean
 518 edit_translate_key (WEdit *edit, long x_key, int *cmd, int *ch)
     /*   */
 519 {
 520     Widget *w = WIDGET (edit);
 521     long command = CK_InsertChar;
 522     int char_for_insertion = -1;
 523 
 524     // an ordinary insertable character
 525     if (!w->ext_mode && x_key < 256)
 526     {
 527         int c;
 528 
 529         if (edit->charpoint >= MB_LEN_MAX)
 530         {
 531             edit->charpoint = 0;
 532             edit->charbuf[edit->charpoint] = '\0';
 533         }
 534         if (edit->charpoint < MB_LEN_MAX)
 535         {
 536             edit->charbuf[edit->charpoint++] = x_key;
 537             edit->charbuf[edit->charpoint] = '\0';
 538         }
 539 
 540         // input from 8-bit locale
 541         if (!mc_global.utf8_display)
 542         {
 543             // source is in 8-bit codeset
 544             c = convert_from_input_c (x_key);
 545 
 546             if (is_printable (c))
 547             {
 548                 if (!edit->utf8)
 549                     char_for_insertion = c;
 550                 else
 551                     char_for_insertion = convert_from_8bit_to_utf_c2 ((char) x_key);
 552                 goto fin;
 553             }
 554         }
 555         else
 556         {
 557             // UTF-8 locale
 558             int res;
 559 
 560             res = str_is_valid_char (edit->charbuf, edit->charpoint);
 561             if (res < 0 && res != -2)
 562             {
 563                 edit->charpoint = 0;  // broken multibyte char, skip
 564                 goto fin;
 565             }
 566 
 567             if (edit->utf8)
 568             {
 569                 // source is in UTF-8 codeset
 570                 if (res < 0)
 571                 {
 572                     char_for_insertion = x_key;
 573                     goto fin;
 574                 }
 575 
 576                 edit->charbuf[edit->charpoint] = '\0';
 577                 edit->charpoint = 0;
 578                 if (g_unichar_isprint (g_utf8_get_char (edit->charbuf)))
 579                 {
 580                     char_for_insertion = x_key;
 581                     goto fin;
 582                 }
 583             }
 584             else
 585             {
 586                 // 8-bit source
 587                 if (res < 0)
 588                 {
 589                     // not finished multibyte input (we're in the middle of multibyte utf-8 char)
 590                     goto fin;
 591                 }
 592 
 593                 if (g_unichar_isprint (g_utf8_get_char (edit->charbuf)))
 594                 {
 595                     c = convert_from_utf_to_current (edit->charbuf);
 596                     edit->charbuf[0] = '\0';
 597                     edit->charpoint = 0;
 598                     char_for_insertion = c;
 599                     goto fin;
 600                 }
 601 
 602                 // non-printable utf-8 input, skip it
 603                 edit->charbuf[0] = '\0';
 604                 edit->charpoint = 0;
 605             }
 606         }
 607     }
 608 
 609     // Commands specific to the key emulation
 610     command = widget_lookup_key (w, x_key);
 611     if (command == CK_IgnoreKey)
 612         command = CK_InsertChar;
 613 
 614 fin:
 615     *cmd = (int) command;  // FIXME
 616     *ch = char_for_insertion;
 617 
 618     return !(command == CK_InsertChar && char_for_insertion == -1);
 619 }
 620 
 621 /* --------------------------------------------------------------------------------------------- */
 622 
 623 static inline void
 624 edit_quit (WDialog *h)
     /*   */
 625 {
 626     GList *l;
 627     WEdit *e = NULL;
 628     GSList *m = NULL;
 629     GSList *me;
 630 
 631     // don't stop the dialog before final decision
 632     widget_set_state (WIDGET (h), WST_ACTIVE, TRUE);
 633 
 634     // check window state and get modified files
 635     for (l = GROUP (h)->widgets; l != NULL; l = g_list_next (l))
 636         if (edit_widget_is_editor (CONST_WIDGET (l->data)))
 637         {
 638             e = EDIT (l->data);
 639 
 640             if (e->drag_state != MCEDIT_DRAG_NONE)
 641             {
 642                 edit_restore_size (e);
 643                 g_slist_free (m);
 644                 return;
 645             }
 646 
 647             /* create separate list because widget_select()
 648                changes the window position in Z order */
 649             if (e->modified != 0)
 650                 m = g_slist_prepend (m, l->data);
 651         }
 652 
 653     for (me = m; me != NULL; me = g_slist_next (me))
 654     {
 655         e = EDIT (me->data);
 656 
 657         widget_select (WIDGET (e));
 658 
 659         if (!edit_ok_to_quit (e))
 660             break;
 661     }
 662 
 663     // if all files were checked, quit editor
 664     if (me == NULL)
 665         dlg_close (h);
 666 
 667     g_slist_free (m);
 668 }
 669 
 670 /* --------------------------------------------------------------------------------------------- */
 671 
 672 static inline void
 673 edit_set_buttonbar (WEdit *edit, WButtonBar *bb)
     /*   */
 674 {
 675     Widget *w = WIDGET (edit);
 676 
 677     buttonbar_set_label (bb, 1, Q_ ("ButtonBar|Help"), w->keymap, NULL);
 678     buttonbar_set_label (bb, 2, Q_ ("ButtonBar|Save"), w->keymap, w);
 679     buttonbar_set_label (bb, 3, Q_ ("ButtonBar|Mark"), w->keymap, w);
 680     buttonbar_set_label (bb, 4, Q_ ("ButtonBar|Replac"), w->keymap, w);
 681     buttonbar_set_label (bb, 5, Q_ ("ButtonBar|Copy"), w->keymap, w);
 682     buttonbar_set_label (bb, 6, Q_ ("ButtonBar|Move"), w->keymap, w);
 683     buttonbar_set_label (bb, 7, Q_ ("ButtonBar|Search"), w->keymap, w);
 684     buttonbar_set_label (bb, 8, Q_ ("ButtonBar|Delete"), w->keymap, w);
 685     buttonbar_set_label (bb, 9, Q_ ("ButtonBar|PullDn"), w->keymap, NULL);
 686     buttonbar_set_label (bb, 10, Q_ ("ButtonBar|Quit"), w->keymap, NULL);
 687 }
 688 
 689 /* --------------------------------------------------------------------------------------------- */
 690 
 691 static void
 692 edit_total_update (WEdit *edit)
     /*   */
 693 {
 694     edit_find_bracket (edit);
 695     edit->force |= REDRAW_COMPLETELY;
 696     edit_update_curs_row (edit);
 697     edit_update_screen (edit);
 698 }
 699 
 700 /* --------------------------------------------------------------------------------------------- */
 701 
 702 static gboolean
 703 edit_update_cursor (WEdit *edit, const mouse_event_t *event)
     /*   */
 704 {
 705     int x, y;
 706     gboolean done;
 707 
 708     x = event->x - (edit->fullscreen != 0 ? 0 : 1);
 709     y = event->y - (edit->fullscreen != 0 ? 0 : 1);
 710 
 711     if (edit->mark2 != -1 && event->msg == MSG_MOUSE_UP)
 712         return TRUE;  // don't do anything
 713 
 714     if (event->msg == MSG_MOUSE_DOWN || event->msg == MSG_MOUSE_UP)
 715         edit_push_key_press (edit);
 716 
 717     if (!edit_options.cursor_beyond_eol)
 718         edit->prev_col = x - edit->start_col - edit_options.line_state_width;
 719     else
 720     {
 721         long line_len;
 722 
 723         line_len = edit_move_forward3 (edit, edit_buffer_get_current_bol (&edit->buffer), 0,
 724                                        edit_buffer_get_current_eol (&edit->buffer));
 725 
 726         if (x > line_len - 1)
 727         {
 728             edit->over_col = x - line_len - edit->start_col - edit_options.line_state_width;
 729             edit->prev_col = line_len;
 730         }
 731         else
 732         {
 733             edit->over_col = 0;
 734             edit->prev_col = x - edit_options.line_state_width - edit->start_col;
 735         }
 736     }
 737 
 738     if (y > edit->curs_row)
 739         edit_move_down (edit, y - edit->curs_row, FALSE);
 740     else if (y < edit->curs_row)
 741         edit_move_up (edit, edit->curs_row - y, FALSE);
 742     else
 743         edit_move_to_prev_col (edit, edit_buffer_get_current_bol (&edit->buffer));
 744 
 745     if (event->msg == MSG_MOUSE_CLICK)
 746     {
 747         edit_mark_cmd (edit, TRUE);  // reset
 748         edit->highlight = 0;
 749     }
 750 
 751     done = (event->msg != MSG_MOUSE_DRAG);
 752     if (done)
 753         edit_mark_cmd (edit, FALSE);
 754 
 755     return done;
 756 }
 757 
 758 /* --------------------------------------------------------------------------------------------- */
 759 /** Callback for the edit dialog */
 760 
 761 static cb_ret_t
 762 edit_dialog_callback (Widget *w, Widget *sender, widget_msg_t msg, int parm, void *data)
     /*   */
 763 {
 764     WGroup *g = GROUP (w);
 765     WDialog *h = DIALOG (w);
 766 
 767     switch (msg)
 768     {
 769     case MSG_INIT:
 770         edit_dlg_init ();
 771         return MSG_HANDLED;
 772 
 773     case MSG_RESIZE:
 774         dlg_default_callback (w, NULL, MSG_RESIZE, 0, NULL);
 775         menubar_arrange (menubar_find (h));
 776         return MSG_HANDLED;
 777 
 778     case MSG_ACTION:
 779     {
 780         // Handle shortcuts, menu, and buttonbar.
 781 
 782         cb_ret_t result;
 783 
 784         result = edit_dialog_command_execute (h, parm);
 785 
 786         /* We forward any commands coming from the menu, and which haven't been
 787            handled by the dialog, to the focused WEdit window. */
 788         if (result == MSG_NOT_HANDLED && sender == WIDGET (menubar_find (h)))
 789             result = send_message (g->current->data, NULL, MSG_ACTION, parm, NULL);
 790 
 791         return result;
 792     }
 793 
 794     case MSG_KEY:
 795     {
 796         Widget *we = WIDGET (g->current->data);
 797         cb_ret_t ret = MSG_NOT_HANDLED;
 798 
 799         if (edit_widget_is_editor (we))
 800         {
 801             gboolean ext_mode;
 802             long command;
 803 
 804             // keep and then extmod flag
 805             ext_mode = we->ext_mode;
 806             command = widget_lookup_key (we, parm);
 807             we->ext_mode = ext_mode;
 808 
 809             if (command == CK_IgnoreKey)
 810                 we->ext_mode = FALSE;
 811             else
 812             {
 813                 ret = edit_dialog_command_execute (h, command);
 814                 /* if command was not handled, keep the extended mode
 815                    for the further key processing */
 816                 if (ret == MSG_HANDLED)
 817                     we->ext_mode = FALSE;
 818             }
 819         }
 820 
 821         /*
 822          * Due to the "end of bracket" escape the editor sees input with is_idle() == false
 823          * (expects more characters) and hence doesn't yet refresh the screen, but then
 824          * no further characters arrive (there's only an "end of bracket" which is swallowed
 825          * by tty_get_event()), so you end up with a screen that's not refreshed after pasting.
 826          * So let's trigger an IDLE signal.
 827          */
 828         if (!is_idle ())
 829             widget_idle (w, TRUE);
 830         return ret;
 831     }
 832 
 833         // hardcoded menu hotkeys (see edit_drop_hotkey_menu)
 834     case MSG_UNHANDLED_KEY:
 835         return edit_drop_hotkey_menu (h, parm) ? MSG_HANDLED : MSG_NOT_HANDLED;
 836 
 837     case MSG_VALIDATE:
 838         edit_quit (h);
 839         return MSG_HANDLED;
 840 
 841     case MSG_DESTROY:
 842         edit_dlg_deinit ();
 843         return MSG_HANDLED;
 844 
 845     case MSG_IDLE:
 846         widget_idle (w, FALSE);
 847         return send_message (g->current->data, NULL, MSG_IDLE, 0, NULL);
 848 
 849     default:
 850         return dlg_default_callback (w, sender, msg, parm, data);
 851     }
 852 }
 853 
 854 /* --------------------------------------------------------------------------------------------- */
 855 
 856 /**
 857  * Handle mouse events of editor screen.
 858  *
 859  * @param w Widget object (the editor)
 860  * @param msg mouse event message
 861  * @param event mouse event data
 862  */
 863 static void
 864 edit_dialog_mouse_callback (Widget *w, mouse_msg_t msg, mouse_event_t *event)
     /*   */
 865 {
 866     gboolean unhandled = TRUE;
 867 
 868     if (msg == MSG_MOUSE_DOWN && event->y == 0)
 869     {
 870         WGroup *g = GROUP (w);
 871         WDialog *h = DIALOG (w);
 872         WMenuBar *b;
 873 
 874         b = menubar_find (h);
 875 
 876         if (!widget_get_state (WIDGET (b), WST_FOCUSED))
 877         {
 878             // menubar
 879 
 880             GList *l;
 881             GList *top = NULL;
 882             int x;
 883 
 884             // Try find top fullscreen window
 885             for (l = g->widgets; l != NULL; l = g_list_next (l))
 886                 if (edit_widget_is_editor (CONST_WIDGET (l->data))
 887                     && EDIT (l->data)->fullscreen != 0)
 888                     top = l;
 889 
 890             // Handle fullscreen/close buttons in the top line
 891             x = w->rect.cols - 6;
 892 
 893             if (top != NULL && event->x >= x)
 894             {
 895                 WEdit *e = EDIT (top->data);
 896 
 897                 if (top != g->current)
 898                 {
 899                     // Window is not active. Activate it
 900                     widget_select (WIDGET (e));
 901                 }
 902 
 903                 // Handle buttons
 904                 if (event->x - x <= 2)
 905                     edit_toggle_fullscreen (e);
 906                 else
 907                     send_message (h, NULL, MSG_ACTION, CK_Close, NULL);
 908 
 909                 unhandled = FALSE;
 910             }
 911 
 912             if (unhandled)
 913                 menubar_activate (b, drop_menus, -1);
 914         }
 915     }
 916 
 917     // Continue handling of unhandled event in window or menu
 918     event->result.abort = unhandled;
 919 }
 920 
 921 /* --------------------------------------------------------------------------------------------- */
 922 
 923 static cb_ret_t
 924 edit_dialog_bg_callback (Widget *w, Widget *sender, widget_msg_t msg, int parm, void *data)
     /*   */
 925 {
 926     switch (msg)
 927     {
 928     case MSG_INIT:
 929         w->rect = WIDGET (w->owner)->rect;
 930         rect_grow (&w->rect, -1, 0);
 931         w->pos_flags |= WPOS_KEEP_ALL;
 932         return MSG_HANDLED;
 933 
 934     default:
 935         return background_callback (w, sender, msg, parm, data);
 936     }
 937 }
 938 
 939 /* --------------------------------------------------------------------------------------------- */
 940 
 941 static cb_ret_t
 942 edit_callback (Widget *w, Widget *sender, widget_msg_t msg, int parm, void *data)
     /*   */
 943 {
 944     WEdit *e = EDIT (w);
 945 
 946     switch (msg)
 947     {
 948     case MSG_FOCUS:
 949         edit_set_buttonbar (e, buttonbar_find (DIALOG (w->owner)));
 950         return MSG_HANDLED;
 951 
 952     case MSG_DRAW:
 953         e->force |= REDRAW_COMPLETELY;
 954         edit_update_screen (e);
 955         return MSG_HANDLED;
 956 
 957     case MSG_KEY:
 958     {
 959         int cmd, ch;
 960         cb_ret_t ret = MSG_NOT_HANDLED;
 961 
 962         // The user may override the access-keys for the menu bar.
 963         if (macro_index == -1 && !bracketed_pasting_in_progress && edit_execute_macro (e, parm))
 964         {
 965             edit_update_screen (e);
 966             ret = MSG_HANDLED;
 967         }
 968         else if (edit_translate_key (e, parm, &cmd, &ch))
 969         {
 970             edit_execute_key_command (e, cmd, ch);
 971             edit_update_screen (e);
 972             ret = MSG_HANDLED;
 973         }
 974 
 975         return ret;
 976     }
 977 
 978     case MSG_ACTION:
 979         // command from menubar or buttonbar
 980         edit_execute_key_command (e, parm, -1);
 981         edit_update_screen (e);
 982         return MSG_HANDLED;
 983 
 984     case MSG_CURSOR:
 985     {
 986         int y, x;
 987 
 988         y = (e->fullscreen != 0 ? 0 : 1) + EDIT_TEXT_VERTICAL_OFFSET + e->curs_row;
 989         x = (e->fullscreen != 0 ? 0 : 1) + EDIT_TEXT_HORIZONTAL_OFFSET
 990             + edit_options.line_state_width + e->curs_col + e->start_col + e->over_col;
 991 
 992         widget_gotoyx (w, y, x);
 993         return MSG_HANDLED;
 994     }
 995 
 996     case MSG_IDLE:
 997         edit_update_screen (e);
 998         return MSG_HANDLED;
 999 
1000     case MSG_DESTROY:
1001         edit_clean (e);
1002         return MSG_HANDLED;
1003 
1004     default:
1005         return widget_default_callback (w, sender, msg, parm, data);
1006     }
1007 }
1008 
1009 /* --------------------------------------------------------------------------------------------- */
1010 
1011 /**
1012  * Handle move/resize mouse events.
1013  */
1014 static void
1015 edit_mouse_handle_move_resize (Widget *w, mouse_msg_t msg, mouse_event_t *event)
     /*   */
1016 {
1017     WEdit *edit = EDIT (w);
1018     WRect *r = &w->rect;
1019     const WRect *h = &CONST_WIDGET (w->owner)->rect;
1020     int global_x, global_y;
1021 
1022     if (msg == MSG_MOUSE_UP)
1023     {
1024         // Exit move/resize mode
1025         edit_execute_cmd (edit, CK_Enter, -1);
1026         edit_update_screen (edit);  // Paint the buttonbar over our possibly overlapping frame.
1027         return;
1028     }
1029 
1030     if (msg != MSG_MOUSE_DRAG)
1031         /**
1032          * We ignore any other events. Specifically, MSG_MOUSE_DOWN.
1033          *
1034          * When the move/resize is initiated by the menu, we let the user
1035          * stop it by clicking with the mouse. Which is why we don't want
1036          * a mouse down to affect the window.
1037          */
1038         return;
1039 
1040     // Convert point to global coordinates for easier calculations.
1041     global_x = event->x + r->x;
1042     global_y = event->y + r->y;
1043 
1044     // Clamp the point to the dialog's client area.
1045     global_y = CLAMP (global_y, h->y + 1, h->y + h->lines - 2);  // Status line, buttonbar
1046     global_x =
1047         CLAMP (global_x, h->x,
1048                h->x + h->cols - 1);  // Currently a no-op, as the dialog has no left/right margins
1049 
1050     if (edit->drag_state == MCEDIT_DRAG_MOVE)
1051     {
1052         r->y = global_y;
1053         r->x = global_x - edit->drag_state_start;
1054     }
1055     else if (edit->drag_state == MCEDIT_DRAG_RESIZE)
1056     {
1057         r->lines = MAX (WINDOW_MIN_LINES, global_y - r->y + 1);
1058         r->cols = MAX (WINDOW_MIN_COLS, global_x - r->x + 1);
1059     }
1060 
1061     edit->force |= REDRAW_COMPLETELY;  // Not really needed as WEdit's MSG_DRAW already does this.
1062 
1063     // We draw the whole dialog because dragging/resizing exposes area beneath
1064     widget_draw (WIDGET (w->owner));
1065 }
1066 
1067 /* --------------------------------------------------------------------------------------------- */
1068 
1069 /**
1070  * Handle mouse events of editor window
1071  *
1072  * @param w Widget object (the editor window)
1073  * @param msg mouse event message
1074  * @param event mouse event data
1075  */
1076 static void
1077 edit_mouse_callback (Widget *w, mouse_msg_t msg, mouse_event_t *event)
     /*   */
1078 {
1079     WEdit *edit = EDIT (w);
1080     // buttons' distance from right edge
1081     int dx = edit->fullscreen != 0 ? 0 : 2;
1082     // location of 'Close' and 'Toggle fullscreen' pictograms
1083     int close_x, toggle_fullscreen_x;
1084 
1085     close_x = (w->rect.cols - 1) - dx - 1;
1086     toggle_fullscreen_x = close_x - 3;
1087 
1088     if (edit->drag_state != MCEDIT_DRAG_NONE)
1089     {
1090         // window is being resized/moved
1091         edit_mouse_handle_move_resize (w, msg, event);
1092         return;
1093     }
1094 
1095     /* If it's the last line on the screen, we abort the event to make the
1096      * system channel it to the overlapping buttonbar instead. We have to do
1097      * this because a WEdit has the WOP_TOP_SELECT flag, which makes it above
1098      * the buttonbar in Z-order. */
1099     if (msg == MSG_MOUSE_DOWN && (event->y + w->rect.y == LINES - 1))
1100     {
1101         event->result.abort = TRUE;
1102         return;
1103     }
1104 
1105     switch (msg)
1106     {
1107     case MSG_MOUSE_DOWN:
1108         widget_select (w);
1109         edit_update_curs_row (edit);
1110         edit_update_curs_col (edit);
1111 
1112         if (event->count == GPM_DOUBLE)
1113             edit->word_highlight = TRUE;
1114         else if (event->count == GPM_TRIPLE)
1115             edit->line_highlight = TRUE;
1116 
1117         if (edit->fullscreen == 0)
1118         {
1119             if (event->y == 0)
1120             {
1121                 if (event->x >= close_x - 1 && event->x <= close_x + 1)
1122                     ;  // do nothing (see MSG_MOUSE_CLICK)
1123                 else if (event->x >= toggle_fullscreen_x - 1 && event->x <= toggle_fullscreen_x + 1)
1124                     ;  // do nothing (see MSG_MOUSE_CLICK)
1125                 else
1126                 {
1127                     // start window move
1128                     edit_execute_cmd (edit, CK_WindowMove, -1);
1129                     edit_update_screen (
1130                         edit);  // Paint the buttonbar over our possibly overlapping frame.
1131                     edit->drag_state_start = event->x;
1132                 }
1133                 break;
1134             }
1135 
1136             if (event->y == w->rect.lines - 1 && event->x == w->rect.cols - 1)
1137             {
1138                 // bottom-right corner -- start window resize
1139                 edit_execute_cmd (edit, CK_WindowResize, -1);
1140                 break;
1141             }
1142         }
1143 
1144         edit_update_cursor (edit, event);
1145         edit_total_update (edit);
1146         break;
1147 
1148     case MSG_MOUSE_UP:
1149         edit_update_cursor (edit, event);
1150         edit_total_update (edit);
1151         edit->word_highlight = FALSE;
1152         edit->line_highlight = FALSE;
1153         break;
1154 
1155     case MSG_MOUSE_CLICK:
1156         if (event->y == 0)
1157         {
1158             if (event->x >= close_x - 1 && event->x <= close_x + 1)
1159                 send_message (w->owner, NULL, MSG_ACTION, CK_Close, NULL);
1160             else if (event->x >= toggle_fullscreen_x - 1 && event->x <= toggle_fullscreen_x + 1)
1161                 edit_toggle_fullscreen (edit);
1162             else if (edit->fullscreen == 0 && event->count == GPM_DOUBLE)
1163                 // double click on top line (toggle fullscreen)
1164                 edit_toggle_fullscreen (edit);
1165         }
1166         break;
1167 
1168     case MSG_MOUSE_DRAG:
1169         edit_update_cursor (edit, event);
1170         edit_total_update (edit);
1171         break;
1172 
1173     case MSG_MOUSE_SCROLL_UP:
1174         edit_move_up (edit, 2, TRUE);
1175         edit_total_update (edit);
1176         break;
1177 
1178     case MSG_MOUSE_SCROLL_DOWN:
1179         edit_move_down (edit, 2, TRUE);
1180         edit_total_update (edit);
1181         break;
1182 
1183     default:
1184         break;
1185     }
1186 }
1187 
1188 /* --------------------------------------------------------------------------------------------- */
1189 /*** public functions ****************************************************************************/
1190 /* --------------------------------------------------------------------------------------------- */
1191 /**
1192  * Edit one file.
1193  *
1194  * @param file_vpath file object
1195  * @param line       line number
1196  * @return TRUE if no errors was occurred, FALSE otherwise
1197  */
1198 
1199 gboolean
1200 edit_file (const edit_arg_t *arg)
     /*   */
1201 {
1202     GList *files;
1203     gboolean ok;
1204 
1205     files = g_list_prepend (NULL, (edit_arg_t *) arg);
1206     ok = edit_files (files);
1207     g_list_free (files);
1208 
1209     return ok;
1210 }
1211 
1212 /* --------------------------------------------------------------------------------------------- */
1213 
1214 gboolean
1215 edit_files (const GList *files)
     /*   */
1216 {
1217     static gboolean made_directory = FALSE;
1218     WDialog *edit_dlg;
1219     WGroup *g;
1220     WMenuBar *menubar;
1221     Widget *w, *wd;
1222     const GList *file;
1223     gboolean ok = FALSE;
1224 
1225     if (!made_directory)
1226     {
1227         char *dir;
1228 
1229         dir = mc_build_filename (mc_config_get_cache_path (), EDIT_HOME_DIR, (char *) NULL);
1230         made_directory = (mkdir (dir, 0700) != -1 || errno == EEXIST);
1231         g_free (dir);
1232 
1233         dir = mc_build_filename (mc_config_get_path (), EDIT_HOME_DIR, (char *) NULL);
1234         made_directory = (mkdir (dir, 0700) != -1 || errno == EEXIST);
1235         g_free (dir);
1236 
1237         dir = mc_build_filename (mc_config_get_data_path (), EDIT_HOME_DIR, (char *) NULL);
1238         made_directory = (mkdir (dir, 0700) != -1 || errno == EEXIST);
1239         g_free (dir);
1240     }
1241 
1242     // Create a new dialog and add it widgets to it
1243     edit_dlg = dlg_create (FALSE, 0, 0, 1, 1, WPOS_FULLSCREEN, FALSE, NULL, edit_dialog_callback,
1244                            edit_dialog_mouse_callback, "[Internal File Editor]", NULL);
1245     wd = WIDGET (edit_dlg);
1246     widget_want_tab (wd, TRUE);
1247     wd->keymap = editor_map;
1248     wd->ext_keymap = editor_x_map;
1249 
1250     edit_dlg->get_shortcut = edit_get_shortcut;
1251     edit_dlg->get_title = edit_get_title;
1252 
1253     g = GROUP (edit_dlg);
1254 
1255     edit_dlg->bg = WIDGET (background_new (1, 0, wd->rect.lines - 2, wd->rect.cols,
1256                                            EDITOR_BACKGROUND_COLOR, ' ', edit_dialog_bg_callback));
1257     group_add_widget (g, edit_dlg->bg);
1258 
1259     menubar = menubar_new (NULL);
1260     w = WIDGET (menubar);
1261     group_add_widget_autopos (g, w, w->pos_flags, NULL);
1262     edit_init_menu (menubar);
1263 
1264     w = WIDGET (buttonbar_new ());
1265     group_add_widget_autopos (g, w, w->pos_flags, NULL);
1266 
1267     for (file = files; file != NULL; file = g_list_next (file))
1268     {
1269         gboolean f_ok;
1270 
1271         f_ok = edit_load_file_from_filename (edit_dlg, (const edit_arg_t *) file->data);
1272         // at least one file has been opened succefully
1273         ok = ok || f_ok;
1274     }
1275 
1276     if (ok)
1277         dlg_run (edit_dlg);
1278 
1279     if (!ok || widget_get_state (wd, WST_CLOSED))
1280         widget_destroy (wd);
1281 
1282     return ok;
1283 }
1284 
1285 /* --------------------------------------------------------------------------------------------- */
1286 
1287 WEdit *
1288 edit_find_editor (const WDialog *h)
     /*   */
1289 {
1290     const WGroup *g = CONST_GROUP (h);
1291 
1292     if (edit_widget_is_editor (CONST_WIDGET (g->current->data)))
1293         return EDIT (g->current->data);
1294     return EDIT (widget_find_by_type (CONST_WIDGET (h), edit_callback));
1295 }
1296 
1297 /* --------------------------------------------------------------------------------------------- */
1298 /**
1299  * Check if widget is an WEdit class.
1300  *
1301  * @param w probably editor object
1302  * @return TRUE if widget is an WEdit class, FALSE otherwise
1303  */
1304 
1305 gboolean
1306 edit_widget_is_editor (const Widget *w)
     /*   */
1307 {
1308     return (w != NULL && w->callback == edit_callback);
1309 }
1310 
1311 /* --------------------------------------------------------------------------------------------- */
1312 
1313 void
1314 edit_update_screen (WEdit *e)
     /*   */
1315 {
1316     edit_scroll_screen_over_cursor (e);
1317     edit_update_curs_col (e);
1318     edit_status (e, widget_get_state (WIDGET (e), WST_FOCUSED));
1319 
1320     // pop all events for this window for internal handling
1321     if (!is_idle ())
1322         e->force |= REDRAW_PAGE;
1323     else
1324     {
1325         if ((e->force & REDRAW_COMPLETELY) != 0)
1326             e->force |= REDRAW_PAGE;
1327         edit_render_keypress (e);
1328     }
1329 
1330     widget_draw (WIDGET (buttonbar_find (DIALOG (WIDGET (e)->owner))));
1331 }
1332 
1333 /* --------------------------------------------------------------------------------------------- */
1334 /**
1335  * Save current window size.
1336  *
1337  * @param edit editor object
1338  */
1339 
1340 void
1341 edit_save_size (WEdit *edit)
     /*   */
1342 {
1343     edit->loc_prev = WIDGET (edit)->rect;
1344 }
1345 
1346 /* --------------------------------------------------------------------------------------------- */
1347 /**
1348  * Create new editor window and insert it into editor screen.
1349  *
1350  * @param h     editor dialog (screen)
1351  * @param y     y coordinate
1352  * @param x     x coordinate
1353  * @param lines window height
1354  * @param cols  window width
1355  * @param f     file object
1356  * @param fline line number in file
1357  * @return TRUE if new window was successfully created and inserted into editor screen,
1358  *         FALSE otherwise
1359  */
1360 
1361 gboolean
1362 edit_add_window (WDialog *h, const WRect *r, const edit_arg_t *arg)
     /*   */
1363 {
1364     WEdit *edit;
1365     Widget *w;
1366 
1367     edit = edit_init (NULL, r, arg);
1368     if (edit == NULL)
1369         return FALSE;
1370 
1371     w = WIDGET (edit);
1372     w->callback = edit_callback;
1373     w->mouse_callback = edit_mouse_callback;
1374 
1375     group_add_widget_autopos (GROUP (h), w, WPOS_KEEP_ALL, NULL);
1376     edit_set_buttonbar (edit, buttonbar_find (h));
1377     widget_draw (WIDGET (h));
1378 
1379     return TRUE;
1380 }
1381 
1382 /* --------------------------------------------------------------------------------------------- */
1383 /**
1384  * Handle move/resize events.
1385  *
1386  * @param edit    editor object
1387  * @param command action id
1388  * @return TRUE if the action was handled, FALSE otherwise
1389  */
1390 
1391 gboolean
1392 edit_handle_move_resize (WEdit *edit, long command)
     /*   */
1393 {
1394     Widget *w = WIDGET (edit);
1395     gboolean ret = FALSE;
1396 
1397     if (edit->fullscreen != 0)
1398     {
1399         edit->drag_state = MCEDIT_DRAG_NONE;
1400         w->mouse.forced_capture = FALSE;
1401         return ret;
1402     }
1403 
1404     switch (edit->drag_state)
1405     {
1406     case MCEDIT_DRAG_NONE:
1407         // possible start move/resize
1408         switch (command)
1409         {
1410         case CK_WindowMove:
1411             edit->drag_state = MCEDIT_DRAG_MOVE;
1412             edit_save_size (edit);
1413             edit_status (edit, TRUE);  // redraw frame and status
1414             /**
1415              * If a user initiates a move by the menu, not by the mouse, we
1416              * make a subsequent mouse drag pull the frame from its middle.
1417              * (We can instead choose '0' to pull it from the corner.)
1418              */
1419             edit->drag_state_start = w->rect.cols / 2;
1420             ret = TRUE;
1421             break;
1422         case CK_WindowResize:
1423             edit->drag_state = MCEDIT_DRAG_RESIZE;
1424             edit_save_size (edit);
1425             edit_status (edit, TRUE);  // redraw frame and status
1426             ret = TRUE;
1427             break;
1428         default:
1429             break;
1430         }
1431         break;
1432 
1433     case MCEDIT_DRAG_MOVE:
1434         switch (command)
1435         {
1436         case CK_WindowResize:
1437             edit->drag_state = MCEDIT_DRAG_RESIZE;
1438             ret = TRUE;
1439             break;
1440         case CK_Up:
1441         case CK_Down:
1442         case CK_Left:
1443         case CK_Right:
1444             edit_window_move (edit, command);
1445             ret = TRUE;
1446             break;
1447         case CK_Enter:
1448         case CK_WindowMove:
1449             edit->drag_state = MCEDIT_DRAG_NONE;
1450             edit_status (edit, TRUE);  // redraw frame and status
1451             MC_FALLTHROUGH;
1452         default:
1453             ret = TRUE;
1454             break;
1455         }
1456         break;
1457 
1458     case MCEDIT_DRAG_RESIZE:
1459         switch (command)
1460         {
1461         case CK_WindowMove:
1462             edit->drag_state = MCEDIT_DRAG_MOVE;
1463             ret = TRUE;
1464             break;
1465         case CK_Up:
1466         case CK_Down:
1467         case CK_Left:
1468         case CK_Right:
1469             edit_window_resize (edit, command);
1470             ret = TRUE;
1471             break;
1472         case CK_Enter:
1473         case CK_WindowResize:
1474             edit->drag_state = MCEDIT_DRAG_NONE;
1475             edit_status (edit, TRUE);  // redraw frame and status
1476             MC_FALLTHROUGH;
1477         default:
1478             ret = TRUE;
1479             break;
1480         }
1481         break;
1482 
1483     default:
1484         break;
1485     }
1486 
1487     /**
1488      * - We let the user stop a resize/move operation by clicking with the
1489      *   mouse anywhere. ("clicking" = pressing and releasing a button.)
1490      * - We let the user perform a resize/move operation by a mouse drag
1491      *   initiated anywhere.
1492      *
1493      * "Anywhere" means: inside or outside the window. We make this happen
1494      * with the 'forced_capture' flag.
1495      */
1496     w->mouse.forced_capture = (edit->drag_state != MCEDIT_DRAG_NONE);
1497 
1498     return ret;
1499 }
1500 
1501 /* --------------------------------------------------------------------------------------------- */
1502 /**
1503  * Toggle window fuulscreen mode.
1504  *
1505  * @param edit editor object
1506  */
1507 
1508 void
1509 edit_toggle_fullscreen (WEdit *edit)
     /*   */
1510 {
1511     Widget *w = WIDGET (edit);
1512 
1513     edit->fullscreen = edit->fullscreen != 0 ? 0 : 1;
1514     edit->force = REDRAW_COMPLETELY;
1515 
1516     if (edit->fullscreen == 0)
1517     {
1518         edit_restore_size (edit);
1519         // do not follow screen size on resize
1520         w->pos_flags = WPOS_KEEP_DEFAULT;
1521     }
1522     else
1523     {
1524         WRect r;
1525 
1526         edit_save_size (edit);
1527         r = WIDGET (w->owner)->rect;
1528         rect_grow (&r, -1, 0);
1529         widget_set_size_rect (w, &r);
1530         // follow screen size on resize
1531         w->pos_flags = WPOS_KEEP_ALL;
1532         edit->force |= REDRAW_PAGE;
1533         edit_update_screen (edit);
1534     }
1535 }
1536 
1537 /* --------------------------------------------------------------------------------------------- */
/* */
root/src/editor/editwidget.c

DEFINITIONS
