src/editor/editwidget.c

src/editor/editwidget.c
/* */
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) 1996-2025
   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 #ifdef HAVE_CHARSET
  55 #    include "lib/charsets.h"
  56 #endif
  57 
  58 #include "src/keymap.h"           // keybind_lookup_keymap_command()
  59 #include "src/setup.h"            // home_dir
  60 #include "src/execute.h"          // toggle_subshell()
  61 #include "src/filemanager/cmd.h"  // save_setup_cmd()
  62 #include "src/learn.h"            // learn_keys()
  63 
  64 #include "edit-impl.h"
  65 #include "editwidget.h"
  66 #include "editmacros.h"  // edit_execute_macro()
  67 #ifdef HAVE_ASPELL
  68 #    include "spell.h"
  69 #endif
  70 
  71 /*** global variables ****************************************************************************/
  72 
  73 char *edit_window_state_char = NULL;
  74 char *edit_window_close_char = NULL;
  75 
  76 /*** file scope macro definitions ****************************************************************/
  77 
  78 #define WINDOW_MIN_LINES (2 + 2)
  79 #define WINDOW_MIN_COLS  (2 + LINE_STATE_WIDTH + 2)
  80 
  81 /*** file scope type declarations ****************************************************************/
  82 
  83 /*** forward declarations (file scope functions) *************************************************/
  84 
  85 /*** file scope variables ************************************************************************/
  86 
  87 static unsigned int edit_dlg_init_refcounter = 0;
  88 
  89 /* --------------------------------------------------------------------------------------------- */
  90 /*** file scope functions ************************************************************************/
  91 /* --------------------------------------------------------------------------------------------- */
  92 /**
  93  * Init the 'edit' subsystem
  94  */
  95 
  96 static void
  97 edit_dlg_init (void)
     /*   */
  98 {
  99     edit_dlg_init_refcounter++;
 100 
 101     if (edit_dlg_init_refcounter == 1)
 102     {
 103         edit_window_state_char = mc_skin_get ("widget-editor", "window-state-char", "*");
 104         edit_window_close_char = mc_skin_get ("widget-editor", "window-close-char", "X");
 105 
 106 #ifdef HAVE_ASPELL
 107         aspell_init ();
 108 #endif
 109     }
 110 }
 111 
 112 /* --------------------------------------------------------------------------------------------- */
 113 /**
 114  * Deinit the 'edit' subsystem
 115  */
 116 
 117 static void
 118 edit_dlg_deinit (void)
     /*   */
 119 {
 120     if (edit_dlg_init_refcounter == 1)
 121     {
 122         g_free (edit_window_state_char);
 123         g_free (edit_window_close_char);
 124 
 125 #ifdef HAVE_ASPELL
 126         aspell_clean ();
 127 #endif
 128     }
 129 
 130     if (edit_dlg_init_refcounter != 0)
 131         edit_dlg_init_refcounter--;
 132 }
 133 
 134 /* --------------------------------------------------------------------------------------------- */
 135 /**
 136  * Show info about editor
 137  */
 138 
 139 static void
 140 edit_about (void)
     /*   */
 141 {
 142     char *ver;
 143 
 144     ver = g_strdup_printf ("MCEdit %s", mc_global.mc_version);
 145 
 146     {
 147         quick_widget_t quick_widgets[] = {
 148             QUICK_LABEL (ver, NULL),
 149             QUICK_SEPARATOR (TRUE),
 150             QUICK_LABEL (N_ ("A user friendly text editor\n"
 151                              "written for the Midnight Commander."),
 152                          NULL),
 153             QUICK_SEPARATOR (FALSE),
 154             QUICK_LABEL (N_ ("Copyright (C) 1996-2025 the Free Software Foundation"), NULL),
 155             QUICK_START_BUTTONS (TRUE, TRUE),
 156             QUICK_BUTTON (N_ ("&OK"), B_ENTER, NULL, NULL),
 157             QUICK_END,
 158         };
 159 
 160         WRect r = { -1, -1, 0, 40 };
 161 
 162         quick_dialog_t qdlg = {
 163             .rect = r,
 164             .title = N_ ("About"),
 165             .help = "[Internal File Editor]",
 166             .widgets = quick_widgets,
 167             .callback = NULL,
 168             .mouse_callback = NULL,
 169         };
 170 
 171         quick_widgets[0].pos_flags = WPOS_KEEP_TOP | WPOS_CENTER_HORZ;
 172         quick_widgets[2].pos_flags = WPOS_KEEP_TOP | WPOS_CENTER_HORZ;
 173         quick_widgets[4].pos_flags = WPOS_KEEP_TOP | WPOS_CENTER_HORZ;
 174 
 175         (void) quick_dialog (&qdlg);
 176     }
 177 
 178     g_free (ver);
 179 }
 180 
 181 /* --------------------------------------------------------------------------------------------- */
 182 /**
 183  * Show a help window
 184  */
 185 
 186 static void
 187 edit_help (const WDialog *h)
     /*   */
 188 {
 189     ev_help_t event_data = { NULL, h->help_ctx };
 190 
 191     mc_event_raise (MCEVENT_GROUP_CORE, "help", &event_data);
 192 }
 193 
 194 /* --------------------------------------------------------------------------------------------- */
 195 /**
 196  * Restore saved window size.
 197  *
 198  * @param edit editor object
 199  */
 200 
 201 static void
 202 edit_restore_size (WEdit *edit)
     /*   */
 203 {
 204     Widget *w = WIDGET (edit);
 205 
 206     edit->drag_state = MCEDIT_DRAG_NONE;
 207     w->mouse.forced_capture = FALSE;
 208     widget_set_size_rect (w, &edit->loc_prev);
 209     widget_draw (WIDGET (w->owner));
 210 }
 211 
 212 /* --------------------------------------------------------------------------------------------- */
 213 /**
 214  * Move window by one row or column in any direction.
 215  *
 216  * @param edit    editor object
 217  * @param command direction (CK_Up, CK_Down, CK_Left, CK_Right)
 218  */
 219 
 220 static void
 221 edit_window_move (WEdit *edit, long command)
     /*   */
 222 {
 223     Widget *we = WIDGET (edit);
 224     Widget *wo = WIDGET (we->owner);
 225     WRect *w = &we->rect;
 226     const WRect *wh = &wo->rect;
 227 
 228     switch (command)
 229     {
 230     case CK_Up:
 231         if (w->y > wh->y + 1)  // menubar
 232             w->y--;
 233         break;
 234     case CK_Down:
 235         if (w->y < wh->y + wh->lines - 2)  // buttonbar
 236             w->y++;
 237         break;
 238     case CK_Left:
 239         if (w->x + wh->cols > wh->x)
 240             w->x--;
 241         break;
 242     case CK_Right:
 243         if (w->x < wh->x + wh->cols)
 244             w->x++;
 245         break;
 246     default:
 247         return;
 248     }
 249 
 250     edit->force |= REDRAW_PAGE;
 251     widget_draw (wo);
 252 }
 253 
 254 /* --------------------------------------------------------------------------------------------- */
 255 /**
 256  * Resize window by one row or column in any direction.
 257  *
 258  * @param edit    editor object
 259  * @param command direction (CK_Up, CK_Down, CK_Left, CK_Right)
 260  */
 261 
 262 static void
 263 edit_window_resize (WEdit *edit, long command)
     /*   */
 264 {
 265     Widget *we = WIDGET (edit);
 266     Widget *wo = WIDGET (we->owner);
 267     WRect *w = &we->rect;
 268     const WRect *wh = &wo->rect;
 269 
 270     switch (command)
 271     {
 272     case CK_Up:
 273         if (w->lines > WINDOW_MIN_LINES)
 274             w->lines--;
 275         break;
 276     case CK_Down:
 277         if (w->y + w->lines < wh->y + wh->lines - 1)  // buttonbar
 278             w->lines++;
 279         break;
 280     case CK_Left:
 281         if (w->cols > WINDOW_MIN_COLS)
 282             w->cols--;
 283         break;
 284     case CK_Right:
 285         if (w->x + w->cols < wh->x + wh->cols)
 286             w->cols++;
 287         break;
 288     default:
 289         return;
 290     }
 291 
 292     edit->force |= REDRAW_COMPLETELY;
 293     widget_draw (wo);
 294 }
 295 
 296 /* --------------------------------------------------------------------------------------------- */
 297 /**
 298  * Get hotkey by number.
 299  *
 300  * @param n number
 301  * @return hotkey
 302  */
 303 
 304 static unsigned char
 305 get_hotkey (int n)
     /*   */
 306 {
 307     return (n <= 9) ? '0' + n : 'a' + n - 10;
 308 }
 309 
 310 /* --------------------------------------------------------------------------------------------- */
 311 
 312 static void
 313 edit_window_list (const WDialog *h)
     /*   */
 314 {
 315     const WGroup *g = CONST_GROUP (h);
 316     const size_t offset = 2;  // skip menu and buttonbar
 317     const size_t dlg_num = g_list_length (g->widgets) - offset;
 318     int lines, cols;
 319     Listbox *listbox;
 320     GList *w;
 321     WEdit *selected;
 322     int i = 0;
 323 
 324     lines = MIN ((size_t) (LINES * 2 / 3), dlg_num);
 325     cols = COLS * 2 / 3;
 326 
 327     listbox = listbox_window_new (lines, cols, _ ("Open files"), "[Open files]");
 328 
 329     for (w = g->widgets; w != NULL; w = g_list_next (w))
 330         if (edit_widget_is_editor (CONST_WIDGET (w->data)))
 331         {
 332             WEdit *e = EDIT (w->data);
 333             char *fname;
 334 
 335             if (e->filename_vpath == NULL)
 336                 fname = g_strdup_printf ("%c [%s]", e->modified != 0 ? '*' : ' ', _ ("NoName"));
 337             else
 338                 fname = g_strdup_printf ("%c%s", e->modified != 0 ? '*' : ' ',
 339                                          vfs_path_as_str (e->filename_vpath));
 340 
 341             listbox_add_item (listbox->list, LISTBOX_APPEND_AT_END, get_hotkey (i++),
 342                               str_term_trim (fname, WIDGET (listbox->list)->rect.cols - 2), e,
 343                               FALSE);
 344             g_free (fname);
 345         }
 346 
 347     selected = listbox_run_with_data (listbox, g->current->data);
 348     if (selected != NULL)
 349         widget_select (WIDGET (selected));
 350 }
 351 
 352 /* --------------------------------------------------------------------------------------------- */
 353 
 354 static char *
 355 edit_get_shortcut (long command)
     /*   */
 356 {
 357     const char *ext_map;
 358     const char *shortcut = NULL;
 359 
 360     shortcut = keybind_lookup_keymap_shortcut (editor_map, command);
 361     if (shortcut != NULL)
 362         return g_strdup (shortcut);
 363 
 364     ext_map = keybind_lookup_keymap_shortcut (editor_map, CK_ExtendedKeyMap);
 365     if (ext_map != NULL)
 366         shortcut = keybind_lookup_keymap_shortcut (editor_x_map, command);
 367     if (shortcut != NULL)
 368         return g_strdup_printf ("%s %s", ext_map, shortcut);
 369 
 370     return NULL;
 371 }
 372 
 373 /* --------------------------------------------------------------------------------------------- */
 374 
 375 static char *
 376 edit_get_title (const WDialog *h, size_t len)
     /*   */
 377 {
 378     const WEdit *edit;
 379     const char *modified;
 380     const char *file_label;
 381     char *filename;
 382 
 383     edit = edit_find_editor (h);
 384     modified = edit->modified != 0 ? "(*) " : "    ";
 385 
 386     len -= 4;
 387 
 388     if (edit->filename_vpath == NULL)
 389         filename = g_strdup (_ ("[NoName]"));
 390     else
 391         filename = g_strdup (vfs_path_as_str (edit->filename_vpath));
 392 
 393     file_label = str_term_trim (filename, len - str_term_width1 (_ ("Edit: ")));
 394     g_free (filename);
 395 
 396     return g_strconcat (_ ("Edit: "), modified, file_label, (char *) NULL);
 397 }
 398 
 399 /* --------------------------------------------------------------------------------------------- */
 400 
 401 static cb_ret_t
 402 edit_dialog_command_execute (WDialog *h, long command)
     /*   */
 403 {
 404     WGroup *g = GROUP (h);
 405     cb_ret_t ret = MSG_HANDLED;
 406 
 407     switch (command)
 408     {
 409     case CK_EditNew:
 410         edit_load_file_from_filename (h, NULL);
 411         break;
 412     case CK_EditFile:
 413         edit_load_cmd (h);
 414         break;
 415     case CK_History:
 416         edit_load_file_from_history (h);
 417         break;
 418     case CK_EditSyntaxFile:
 419         edit_load_syntax_file (h);
 420         break;
 421     case CK_EditUserMenu:
 422         edit_load_menu_file (h);
 423         break;
 424     case CK_Close:
 425         // if there are no opened files anymore, close MC editor
 426         if (edit_widget_is_editor (CONST_WIDGET (g->current->data))
 427             && edit_close_cmd (EDIT (g->current->data)) && edit_find_editor (h) == NULL)
 428             dlg_close (h);
 429         break;
 430     case CK_Help:
 431         edit_help (h);
 432         break;
 433     case CK_Menu:
 434         edit_menu_cmd (h);
 435         break;
 436     case CK_Quit:
 437     case CK_Cancel:
 438         // don't close editor due to SIGINT, but stop move/resize window
 439         {
 440             Widget *w = WIDGET (g->current->data);
 441 
 442             if (edit_widget_is_editor (w) && EDIT (w)->drag_state != MCEDIT_DRAG_NONE)
 443                 edit_restore_size (EDIT (w));
 444             else if (command == CK_Quit)
 445                 dlg_close (h);
 446         }
 447         break;
 448     case CK_About:
 449         edit_about ();
 450         break;
 451     case CK_SyntaxOnOff:
 452         edit_syntax_onoff_cmd (h);
 453         break;
 454     case CK_ShowTabTws:
 455         edit_show_tabs_tws_cmd (h);
 456         break;
 457     case CK_ShowMargin:
 458         edit_show_margin_cmd (h);
 459         break;
 460     case CK_ShowNumbers:
 461         edit_show_numbers_cmd (h);
 462         break;
 463     case CK_Refresh:
 464         edit_refresh_cmd ();
 465         break;
 466     case CK_Shell:
 467         toggle_subshell ();
 468         break;
 469     case CK_LearnKeys:
 470         learn_keys ();
 471         break;
 472     case CK_WindowMove:
 473     case CK_WindowResize:
 474         if (edit_widget_is_editor (CONST_WIDGET (g->current->data)))
 475             edit_handle_move_resize (EDIT (g->current->data), command);
 476         break;
 477     case CK_WindowList:
 478         edit_window_list (h);
 479         break;
 480     case CK_WindowNext:
 481         group_select_next_widget (g);
 482         break;
 483     case CK_WindowPrev:
 484         group_select_prev_widget (g);
 485         break;
 486     case CK_Options:
 487         edit_options_dialog (h);
 488         break;
 489     case CK_OptionsSaveMode:
 490         edit_save_mode_cmd ();
 491         break;
 492     case CK_SaveSetup:
 493         save_setup_cmd ();
 494         break;
 495     default:
 496         ret = MSG_NOT_HANDLED;
 497         break;
 498     }
 499 
 500     return ret;
 501 }
 502 
 503 /* --------------------------------------------------------------------------------------------- */
 504 /*
 505  * Translate the keycode into either 'command' or 'char_for_insertion'.
 506  * 'command' is one of the editor commands from lib/keybind.h.
 507  */
 508 
 509 static gboolean
 510 edit_translate_key (WEdit *edit, long x_key, int *cmd, int *ch)
     /*   */
 511 {
 512     Widget *w = WIDGET (edit);
 513     long command = CK_InsertChar;
 514     int char_for_insertion = -1;
 515 
 516     // an ordinary insertable character
 517     if (!w->ext_mode && x_key < 256)
 518     {
 519 #ifndef HAVE_CHARSET
 520         if (is_printable (x_key))
 521         {
 522             char_for_insertion = x_key;
 523             goto fin;
 524         }
 525 #else
 526         int c;
 527 
 528         if (edit->charpoint >= MB_LEN_MAX)
 529         {
 530             edit->charpoint = 0;
 531             edit->charbuf[edit->charpoint] = '\0';
 532         }
 533         if (edit->charpoint < MB_LEN_MAX)
 534         {
 535             edit->charbuf[edit->charpoint++] = x_key;
 536             edit->charbuf[edit->charpoint] = '\0';
 537         }
 538 
 539         // input from 8-bit locale
 540         if (!mc_global.utf8_display)
 541         {
 542             // source is in 8-bit codeset
 543             c = convert_from_input_c (x_key);
 544 
 545             if (is_printable (c))
 546             {
 547                 if (!edit->utf8)
 548                     char_for_insertion = c;
 549                 else
 550                     char_for_insertion = convert_from_8bit_to_utf_c2 ((char) x_key);
 551                 goto fin;
 552             }
 553         }
 554         else
 555         {
 556             // UTF-8 locale
 557             int res;
 558 
 559             res = str_is_valid_char (edit->charbuf, edit->charpoint);
 560             if (res < 0 && res != -2)
 561             {
 562                 edit->charpoint = 0;  // broken multibyte char, skip
 563                 goto fin;
 564             }
 565 
 566             if (edit->utf8)
 567             {
 568                 // source is in UTF-8 codeset
 569                 if (res < 0)
 570                 {
 571                     char_for_insertion = x_key;
 572                     goto fin;
 573                 }
 574 
 575                 edit->charbuf[edit->charpoint] = '\0';
 576                 edit->charpoint = 0;
 577                 if (g_unichar_isprint (g_utf8_get_char (edit->charbuf)))
 578                 {
 579                     char_for_insertion = x_key;
 580                     goto fin;
 581                 }
 582             }
 583             else
 584             {
 585                 // 8-bit source
 586                 if (res < 0)
 587                 {
 588                     // not finished multibyte input (we're in the middle of multibyte utf-8 char)
 589                     goto fin;
 590                 }
 591 
 592                 if (g_unichar_isprint (g_utf8_get_char (edit->charbuf)))
 593                 {
 594                     c = convert_from_utf_to_current (edit->charbuf);
 595                     edit->charbuf[0] = '\0';
 596                     edit->charpoint = 0;
 597                     char_for_insertion = c;
 598                     goto fin;
 599                 }
 600 
 601                 // non-printable utf-8 input, skip it
 602                 edit->charbuf[0] = '\0';
 603                 edit->charpoint = 0;
 604             }
 605         }
 606 #endif
 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_exit (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 (edit->fullscreen == 0)
1113         {
1114             if (event->y == 0)
1115             {
1116                 if (event->x >= close_x - 1 && event->x <= close_x + 1)
1117                     ;  // do nothing (see MSG_MOUSE_CLICK)
1118                 else if (event->x >= toggle_fullscreen_x - 1 && event->x <= toggle_fullscreen_x + 1)
1119                     ;  // do nothing (see MSG_MOUSE_CLICK)
1120                 else
1121                 {
1122                     // start window move
1123                     edit_execute_cmd (edit, CK_WindowMove, -1);
1124                     edit_update_screen (
1125                         edit);  // Paint the buttonbar over our possibly overlapping frame.
1126                     edit->drag_state_start = event->x;
1127                 }
1128                 break;
1129             }
1130 
1131             if (event->y == w->rect.lines - 1 && event->x == w->rect.cols - 1)
1132             {
1133                 // bottom-right corner -- start window resize
1134                 edit_execute_cmd (edit, CK_WindowResize, -1);
1135                 break;
1136             }
1137         }
1138 
1139         MC_FALLTHROUGH;  // to start/stop text selection
1140 
1141     case MSG_MOUSE_UP:
1142         edit_update_cursor (edit, event);
1143         edit_total_update (edit);
1144         break;
1145 
1146     case MSG_MOUSE_CLICK:
1147         if (event->y == 0)
1148         {
1149             if (event->x >= close_x - 1 && event->x <= close_x + 1)
1150                 send_message (w->owner, NULL, MSG_ACTION, CK_Close, NULL);
1151             else if (event->x >= toggle_fullscreen_x - 1 && event->x <= toggle_fullscreen_x + 1)
1152                 edit_toggle_fullscreen (edit);
1153             else if (edit->fullscreen == 0 && event->count == GPM_DOUBLE)
1154                 // double click on top line (toggle fullscreen)
1155                 edit_toggle_fullscreen (edit);
1156         }
1157         else if (event->count == GPM_DOUBLE)
1158         {
1159             // double click
1160             edit_mark_current_word_cmd (edit);
1161             edit_total_update (edit);
1162         }
1163         else if (event->count == GPM_TRIPLE)
1164         {
1165             // triple click: works in GPM only, not in xterm
1166             edit_mark_current_line_cmd (edit);
1167             edit_total_update (edit);
1168         }
1169         break;
1170 
1171     case MSG_MOUSE_DRAG:
1172         edit_update_cursor (edit, event);
1173         edit_total_update (edit);
1174         break;
1175 
1176     case MSG_MOUSE_SCROLL_UP:
1177         edit_move_up (edit, 2, TRUE);
1178         edit_total_update (edit);
1179         break;
1180 
1181     case MSG_MOUSE_SCROLL_DOWN:
1182         edit_move_down (edit, 2, TRUE);
1183         edit_total_update (edit);
1184         break;
1185 
1186     default:
1187         break;
1188     }
1189 }
1190 
1191 /* --------------------------------------------------------------------------------------------- */
1192 /*** public functions ****************************************************************************/
1193 /* --------------------------------------------------------------------------------------------- */
1194 /**
1195  * Edit one file.
1196  *
1197  * @param file_vpath file object
1198  * @param line       line number
1199  * @return TRUE if no errors was occurred, FALSE otherwise
1200  */
1201 
1202 gboolean
1203 edit_file (const edit_arg_t *arg)
     /*   */
1204 {
1205     GList *files;
1206     gboolean ok;
1207 
1208     files = g_list_prepend (NULL, (edit_arg_t *) arg);
1209     ok = edit_files (files);
1210     g_list_free (files);
1211 
1212     return ok;
1213 }
1214 
1215 /* --------------------------------------------------------------------------------------------- */
1216 
1217 gboolean
1218 edit_files (const GList *files)
     /*   */
1219 {
1220     static gboolean made_directory = FALSE;
1221     WDialog *edit_dlg;
1222     WGroup *g;
1223     WMenuBar *menubar;
1224     Widget *w, *wd;
1225     const GList *file;
1226     gboolean ok = FALSE;
1227 
1228     if (!made_directory)
1229     {
1230         char *dir;
1231 
1232         dir = mc_build_filename (mc_config_get_cache_path (), EDIT_HOME_DIR, (char *) NULL);
1233         made_directory = (mkdir (dir, 0700) != -1 || errno == EEXIST);
1234         g_free (dir);
1235 
1236         dir = mc_build_filename (mc_config_get_path (), EDIT_HOME_DIR, (char *) NULL);
1237         made_directory = (mkdir (dir, 0700) != -1 || errno == EEXIST);
1238         g_free (dir);
1239 
1240         dir = mc_build_filename (mc_config_get_data_path (), EDIT_HOME_DIR, (char *) NULL);
1241         made_directory = (mkdir (dir, 0700) != -1 || errno == EEXIST);
1242         g_free (dir);
1243     }
1244 
1245     // Create a new dialog and add it widgets to it
1246     edit_dlg = dlg_create (FALSE, 0, 0, 1, 1, WPOS_FULLSCREEN, FALSE, NULL, edit_dialog_callback,
1247                            edit_dialog_mouse_callback, "[Internal File Editor]", NULL);
1248     wd = WIDGET (edit_dlg);
1249     widget_want_tab (wd, TRUE);
1250     wd->keymap = editor_map;
1251     wd->ext_keymap = editor_x_map;
1252 
1253     edit_dlg->get_shortcut = edit_get_shortcut;
1254     edit_dlg->get_title = edit_get_title;
1255 
1256     g = GROUP (edit_dlg);
1257 
1258     edit_dlg->bg = WIDGET (background_new (1, 0, wd->rect.lines - 2, wd->rect.cols,
1259                                            EDITOR_BACKGROUND, ' ', edit_dialog_bg_callback));
1260     group_add_widget (g, edit_dlg->bg);
1261 
1262     menubar = menubar_new (NULL);
1263     w = WIDGET (menubar);
1264     group_add_widget_autopos (g, w, w->pos_flags, NULL);
1265     edit_init_menu (menubar);
1266 
1267     w = WIDGET (buttonbar_new ());
1268     group_add_widget_autopos (g, w, w->pos_flags, NULL);
1269 
1270     for (file = files; file != NULL; file = g_list_next (file))
1271     {
1272         gboolean f_ok;
1273 
1274         f_ok = edit_load_file_from_filename (edit_dlg, (const edit_arg_t *) file->data);
1275         // at least one file has been opened succefully
1276         ok = ok || f_ok;
1277     }
1278 
1279     if (ok)
1280         dlg_run (edit_dlg);
1281 
1282     if (!ok || widget_get_state (wd, WST_CLOSED))
1283         widget_destroy (wd);
1284 
1285     return ok;
1286 }
1287 
1288 /* --------------------------------------------------------------------------------------------- */
1289 
1290 WEdit *
1291 edit_find_editor (const WDialog *h)
     /*   */
1292 {
1293     const WGroup *g = CONST_GROUP (h);
1294 
1295     if (edit_widget_is_editor (CONST_WIDGET (g->current->data)))
1296         return EDIT (g->current->data);
1297     return EDIT (widget_find_by_type (CONST_WIDGET (h), edit_callback));
1298 }
1299 
1300 /* --------------------------------------------------------------------------------------------- */
1301 /**
1302  * Check if widget is an WEdit class.
1303  *
1304  * @param w probably editor object
1305  * @return TRUE if widget is an WEdit class, FALSE otherwise
1306  */
1307 
1308 gboolean
1309 edit_widget_is_editor (const Widget *w)
     /*   */
1310 {
1311     return (w != NULL && w->callback == edit_callback);
1312 }
1313 
1314 /* --------------------------------------------------------------------------------------------- */
1315 
1316 void
1317 edit_update_screen (WEdit *e)
     /*   */
1318 {
1319     edit_scroll_screen_over_cursor (e);
1320     edit_update_curs_col (e);
1321     edit_status (e, widget_get_state (WIDGET (e), WST_FOCUSED));
1322 
1323     // pop all events for this window for internal handling
1324     if (!is_idle ())
1325         e->force |= REDRAW_PAGE;
1326     else
1327     {
1328         if ((e->force & REDRAW_COMPLETELY) != 0)
1329             e->force |= REDRAW_PAGE;
1330         edit_render_keypress (e);
1331     }
1332 
1333     widget_draw (WIDGET (buttonbar_find (DIALOG (WIDGET (e)->owner))));
1334 }
1335 
1336 /* --------------------------------------------------------------------------------------------- */
1337 /**
1338  * Save current window size.
1339  *
1340  * @param edit editor object
1341  */
1342 
1343 void
1344 edit_save_size (WEdit *edit)
     /*   */
1345 {
1346     edit->loc_prev = WIDGET (edit)->rect;
1347 }
1348 
1349 /* --------------------------------------------------------------------------------------------- */
1350 /**
1351  * Create new editor window and insert it into editor screen.
1352  *
1353  * @param h     editor dialog (screen)
1354  * @param y     y coordinate
1355  * @param x     x coordinate
1356  * @param lines window height
1357  * @param cols  window width
1358  * @param f     file object
1359  * @param fline line number in file
1360  * @return TRUE if new window was successfully created and inserted into editor screen,
1361  *         FALSE otherwise
1362  */
1363 
1364 gboolean
1365 edit_add_window (WDialog *h, const WRect *r, const edit_arg_t *arg)
     /*   */
1366 {
1367     WEdit *edit;
1368     Widget *w;
1369 
1370     edit = edit_init (NULL, r, arg);
1371     if (edit == NULL)
1372         return FALSE;
1373 
1374     w = WIDGET (edit);
1375     w->callback = edit_callback;
1376     w->mouse_callback = edit_mouse_callback;
1377 
1378     group_add_widget_autopos (GROUP (h), w, WPOS_KEEP_ALL, NULL);
1379     edit_set_buttonbar (edit, buttonbar_find (h));
1380     widget_draw (WIDGET (h));
1381 
1382     return TRUE;
1383 }
1384 
1385 /* --------------------------------------------------------------------------------------------- */
1386 /**
1387  * Handle move/resize events.
1388  *
1389  * @param edit    editor object
1390  * @param command action id
1391  * @return TRUE if the action was handled, FALSE otherwise
1392  */
1393 
1394 gboolean
1395 edit_handle_move_resize (WEdit *edit, long command)
     /*   */
1396 {
1397     Widget *w = WIDGET (edit);
1398     gboolean ret = FALSE;
1399 
1400     if (edit->fullscreen != 0)
1401     {
1402         edit->drag_state = MCEDIT_DRAG_NONE;
1403         w->mouse.forced_capture = FALSE;
1404         return ret;
1405     }
1406 
1407     switch (edit->drag_state)
1408     {
1409     case MCEDIT_DRAG_NONE:
1410         // possible start move/resize
1411         switch (command)
1412         {
1413         case CK_WindowMove:
1414             edit->drag_state = MCEDIT_DRAG_MOVE;
1415             edit_save_size (edit);
1416             edit_status (edit, TRUE);  // redraw frame and status
1417             /**
1418              * If a user initiates a move by the menu, not by the mouse, we
1419              * make a subsequent mouse drag pull the frame from its middle.
1420              * (We can instead choose '0' to pull it from the corner.)
1421              */
1422             edit->drag_state_start = w->rect.cols / 2;
1423             ret = TRUE;
1424             break;
1425         case CK_WindowResize:
1426             edit->drag_state = MCEDIT_DRAG_RESIZE;
1427             edit_save_size (edit);
1428             edit_status (edit, TRUE);  // redraw frame and status
1429             ret = TRUE;
1430             break;
1431         default:
1432             break;
1433         }
1434         break;
1435 
1436     case MCEDIT_DRAG_MOVE:
1437         switch (command)
1438         {
1439         case CK_WindowResize:
1440             edit->drag_state = MCEDIT_DRAG_RESIZE;
1441             ret = TRUE;
1442             break;
1443         case CK_Up:
1444         case CK_Down:
1445         case CK_Left:
1446         case CK_Right:
1447             edit_window_move (edit, command);
1448             ret = TRUE;
1449             break;
1450         case CK_Enter:
1451         case CK_WindowMove:
1452             edit->drag_state = MCEDIT_DRAG_NONE;
1453             edit_status (edit, TRUE);  // redraw frame and status
1454             MC_FALLTHROUGH;
1455         default:
1456             ret = TRUE;
1457             break;
1458         }
1459         break;
1460 
1461     case MCEDIT_DRAG_RESIZE:
1462         switch (command)
1463         {
1464         case CK_WindowMove:
1465             edit->drag_state = MCEDIT_DRAG_MOVE;
1466             ret = TRUE;
1467             break;
1468         case CK_Up:
1469         case CK_Down:
1470         case CK_Left:
1471         case CK_Right:
1472             edit_window_resize (edit, command);
1473             ret = TRUE;
1474             break;
1475         case CK_Enter:
1476         case CK_WindowResize:
1477             edit->drag_state = MCEDIT_DRAG_NONE;
1478             edit_status (edit, TRUE);  // redraw frame and status
1479             MC_FALLTHROUGH;
1480         default:
1481             ret = TRUE;
1482             break;
1483         }
1484         break;
1485 
1486     default:
1487         break;
1488     }
1489 
1490     /**
1491      * - We let the user stop a resize/move operation by clicking with the
1492      *   mouse anywhere. ("clicking" = pressing and releasing a button.)
1493      * - We let the user perform a resize/move operation by a mouse drag
1494      *   initiated anywhere.
1495      *
1496      * "Anywhere" means: inside or outside the window. We make this happen
1497      * with the 'forced_capture' flag.
1498      */
1499     w->mouse.forced_capture = (edit->drag_state != MCEDIT_DRAG_NONE);
1500 
1501     return ret;
1502 }
1503 
1504 /* --------------------------------------------------------------------------------------------- */
1505 /**
1506  * Toggle window fuulscreen mode.
1507  *
1508  * @param edit editor object
1509  */
1510 
1511 void
1512 edit_toggle_fullscreen (WEdit *edit)
     /*   */
1513 {
1514     Widget *w = WIDGET (edit);
1515 
1516     edit->fullscreen = edit->fullscreen != 0 ? 0 : 1;
1517     edit->force = REDRAW_COMPLETELY;
1518 
1519     if (edit->fullscreen == 0)
1520     {
1521         edit_restore_size (edit);
1522         // do not follow screen size on resize
1523         w->pos_flags = WPOS_KEEP_DEFAULT;
1524     }
1525     else
1526     {
1527         WRect r;
1528 
1529         edit_save_size (edit);
1530         r = WIDGET (w->owner)->rect;
1531         rect_grow (&r, -1, 0);
1532         widget_set_size_rect (w, &r);
1533         // follow screen size on resize
1534         w->pos_flags = WPOS_KEEP_ALL;
1535         edit->force |= REDRAW_PAGE;
1536         edit_update_screen (edit);
1537     }
1538 }
1539 
1540 /* --------------------------------------------------------------------------------------------- */
/* */
root/src/editor/editwidget.c

DEFINITIONS
