edit/editwidget.c

   1 /* editor initialisation and callback handler.
   2
   3    Copyright (C) 1996, 1997 the Free Software Foundation
   4
   5    Authors: 1996, 1997 Paul Sheer
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  20    02111-1307, USA.
  21  */
  22
  23 #include <config.h>
  24 #include "edit.h"
  25
  26 WEdit *wedit;
  27 Dlg_head *edit_dlg;
  28 WMenu *edit_menubar;
  29
  30 int column_highlighting = 0;
  31
  32 static int edit_callback (Dlg_head * h, WEdit * edit, int msg, int par);
  33
  34 int edit_event (WEdit * edit, Gpm_Event * event, int *result)
  35 {
  36     *result = MOU_NORMAL;
  37     edit_update_curs_row (edit);
  38     edit_update_curs_col (edit);
  39     if (event->type & (GPM_DOWN | GPM_DRAG | GPM_UP)) {
  40         if (event->y > 1 && event->x > 0
  41             && event->x <= edit->num_widget_columns
  42             && event->y <= edit->num_widget_lines + 1) {
  43             if (edit->mark2 != -1 && event->type & (GPM_UP | GPM_DRAG))
  44                 return 1;       /* a lone up mustn't do anything */
  45             if (event->type & (GPM_DOWN | GPM_UP))
  46                 edit_push_key_press (edit);
  47             edit_cursor_move (edit, edit_bol (edit, edit->curs1) - edit->curs1);
  48             if (--event->y > (edit->curs_row + 1))
  49                 edit_cursor_move (edit,
  50                                   edit_move_forward (edit, edit->curs1, event->y - (edit->curs_row + 1), 0)
  51                                   - edit->curs1);
  52             if (event->y < (edit->curs_row + 1))
  53                 edit_cursor_move (edit,
  54                                   +edit_move_backward (edit, edit->curs1, (edit->curs_row + 1) - event->y)
  55                                   - edit->curs1);
  56             edit_cursor_move (edit, (int) edit_move_forward3 (edit, edit->curs1,
  57                        event->x - edit->start_col - 1, 0) - edit->curs1);
  58             edit->prev_col = edit_get_col (edit);
  59             if (event->type & GPM_DOWN) {
  60                 edit_mark_cmd (edit, 1);        /* reset */
  61                 edit->highlight = 0;
  62             }
  63             if (!(event->type & GPM_DRAG))
  64                 edit_mark_cmd (edit, 0);
  65             edit->force |= REDRAW_COMPLETELY;
  66             edit_update_curs_row (edit);
  67             edit_update_curs_col (edit);
  68             edit_update_screen (edit);
  69             return 1;
  70         }
  71     }
  72     return 0;
  73 }
  74
  75
  76
  77 int menubar_event (Gpm_Event * event, WMenu * menubar);         /* menu.c */
  78
  79 int edit_mouse_event (Gpm_Event * event, void *x)
  80 {
  81     int result;
  82     if (edit_event ((WEdit *) x, event, &result))
  83         return result;
  84     else
  85         return menubar_event (event, edit_menubar);
  86 }
  87
  88 int
  89 edit (const char *_file, int line)
  90 {
  91     static int made_directory = 0;
  92     int framed = 0;
  93     char *text = 0;
  94     WButtonBar *edit_bar;
  95
  96     if (option_backup_ext_int != -1) {
  97         option_backup_ext = malloc (sizeof (int) + 1);
  98         option_backup_ext[sizeof (int)] = '\0';
  99         memcpy (option_backup_ext, (char *) &option_backup_ext_int,
 100                 sizeof (int));
 101     }
 102     if (!made_directory) {
 103         mkdir (catstrs (home_dir, EDIT_DIR, 0), 0700);
 104         made_directory = 1;
 105     }
 106     if (_file) {
 107         if (!(*_file)) {
 108             _file = 0;
 109             text = "";
 110         }
 111     } else
 112         text = "";
 113
 114     if (!(wedit = edit_init (NULL, LINES - 2, COLS, _file, text, "", 0))) {
 115         return 0;
 116     }
 117     wedit->macro_i = -1;
 118
 119     /* Create a new dialog and add it widgets to it */
 120     edit_dlg =
 121         create_dlg (0, 0, LINES, COLS, NULL, NULL,
 122                     "[Internal File Editor]", NULL, DLG_WANT_TAB);
 123
 124     init_widget (&(wedit->widget), 0, 0, LINES - 1, COLS,
 125                  (callback_fn) edit_callback, (destroy_fn) edit_clean,
 126                  (mouse_h) edit_mouse_event, 0);
 127
 128     widget_want_cursor (wedit->widget, 1);
 129
 130     edit_bar = buttonbar_new (1);
 131
 132     if (!framed) {
 133         switch (edit_key_emulation) {
 134         case EDIT_KEY_EMULATION_NORMAL:
 135             edit_init_menu_normal ();   /* editmenu.c */
 136             break;
 137         case EDIT_KEY_EMULATION_EMACS:
 138             edit_init_menu_emacs ();    /* editmenu.c */
 139             break;
 140         }
 141         edit_menubar = menubar_new (0, 0, COLS, EditMenuBar, N_menus);
 142     }
 143     add_widget (edit_dlg, wedit);
 144
 145     if (!framed)
 146         add_widget (edit_dlg, edit_menubar);
 147
 148     add_widget (edit_dlg, edit_bar);
 149     edit_move_display (wedit, line - 1);
 150     edit_move_to_line (wedit, line - 1);
 151
 152     run_dlg (edit_dlg);
 153
 154     if (!framed)
 155         edit_done_menu ();      /* editmenu.c */
 156
 157     destroy_dlg (edit_dlg);
 158
 159     return 1;
 160 }
 161
 162 static void edit_my_define (Dlg_head * h, int idx, char *text,
 163                             void (*fn) (WEdit *), WEdit * edit)
 164 {
 165     define_label_data (h, (Widget *) edit, idx, text, (buttonbarfn) fn, edit);
 166 }
 167
 168
 169 static void cmd_F1 (WEdit * edit)
 170 {
 171     send_message (edit->widget.parent, (Widget *) edit, WIDGET_KEY, KEY_F (1));
 172 }
 173
 174 static void cmd_F2 (WEdit * edit)
 175 {
 176     send_message (edit->widget.parent, (Widget *) edit, WIDGET_KEY, KEY_F (2));
 177 }
 178
 179 static void cmd_F3 (WEdit * edit)
 180 {
 181     send_message (edit->widget.parent, (Widget *) edit, WIDGET_KEY, KEY_F (3));
 182 }
 183
 184 static void cmd_F4 (WEdit * edit)
 185 {
 186     send_message (edit->widget.parent, (Widget *) edit, WIDGET_KEY, KEY_F (4));
 187 }
 188
 189 static void cmd_F5 (WEdit * edit)
 190 {
 191     send_message (edit->widget.parent, (Widget *) edit, WIDGET_KEY, KEY_F (5));
 192 }
 193
 194 static void cmd_F6 (WEdit * edit)
 195 {
 196     send_message (edit->widget.parent, (Widget *) edit, WIDGET_KEY, KEY_F (6));
 197 }
 198
 199 static void cmd_F7 (WEdit * edit)
 200 {
 201     send_message (edit->widget.parent, (Widget *) edit, WIDGET_KEY, KEY_F (7));
 202 }
 203
 204 static void cmd_F8 (WEdit * edit)
 205 {
 206     send_message (edit->widget.parent, (Widget *) edit, WIDGET_KEY, KEY_F (8));
 207 }
 208
 209 #if 0
 210 static void cmd_F9 (WEdit * edit)
 211 {
 212     send_message (edit->widget.parent, (Widget *) edit, WIDGET_KEY, KEY_F (9));
 213 }
 214 #endif
 215
 216 static void cmd_F10 (WEdit * edit)
 217 {
 218     send_message (edit->widget.parent, (Widget *) edit, WIDGET_KEY, KEY_F (10));
 219 }
 220
 221 void edit_labels (WEdit * edit)
 222 {
 223     Dlg_head *h = edit->widget.parent;
 224
 225     edit_my_define (h, 1, _ ("Help"), cmd_F1, edit);
 226     edit_my_define (h, 2, _ ("Save"), cmd_F2, edit);
 227     edit_my_define (h, 3, _ ("Mark"), cmd_F3, edit);
 228     edit_my_define (h, 4, _ ("Replac"), cmd_F4, edit);
 229     edit_my_define (h, 5, _ ("Copy"), cmd_F5, edit);
 230     edit_my_define (h, 6, _ ("Move"), cmd_F6, edit);
 231     edit_my_define (h, 7, _ ("Search"), cmd_F7, edit);
 232     edit_my_define (h, 8, _ ("Delete"), cmd_F8, edit);
 233     if (!edit->have_frame)
 234         edit_my_define (h, 9, _ ("PullDn"), edit_menu_cmd, edit);
 235     edit_my_define (h, 10, _ ("Quit"), cmd_F10, edit);
 236
 237     redraw_labels (h, (Widget *) edit);
 238 }
 239
 240
 241 long get_key_state (void)
 242 {
 243     return (long) get_modifier ();
 244 }
 245
 246 void edit_adjust_size (Dlg_head * h)
 247 {
 248     WEdit *edit;
 249     WButtonBar *edit_bar;
 250
 251     edit = (WEdit *) find_widget_type (h, (callback_fn) edit_callback);
 252     edit_bar = (WButtonBar *) edit->widget.parent->current->next->widget;
 253     widget_set_size (&edit->widget, 0, 0, LINES - 1, COLS);
 254     widget_set_size (&edit_bar->widget, LINES - 1, 0, 1, COLS);
 255     widget_set_size (&edit_menubar->widget, 0, 0, 1, COLS);
 256
 257 #ifdef RESIZABLE_MENUBAR
 258     menubar_arrange (edit_menubar);
 259 #endif
 260 }
 261
 262 void edit_update_screen (WEdit * e)
 263 {
 264     edit_scroll_screen_over_cursor (e);
 265
 266     edit_update_curs_col (e);
 267     edit_status (e);
 268
 269 /* pop all events for this window for internal handling */
 270
 271     if (!is_idle ()) {
 272         e->force |= REDRAW_PAGE;
 273         return;
 274     }
 275     if (e->force & REDRAW_COMPLETELY)
 276         e->force |= REDRAW_PAGE;
 277     edit_render_keypress (e);
 278 }
 279
 280 static int edit_callback (Dlg_head * h, WEdit * e, int msg, int par)
 281 {
 282     switch (msg) {
 283     case WIDGET_INIT:
 284         e->force |= REDRAW_COMPLETELY;
 285         edit_labels (e);
 286         break;
 287     case WIDGET_DRAW:
 288         e->force |= REDRAW_COMPLETELY;
 289         e->num_widget_lines = LINES - 2;
 290         e->num_widget_columns = COLS;
 291     case WIDGET_FOCUS:
 292         edit_update_screen (e);
 293         return 1;
 294     case WIDGET_KEY:{
 295             int cmd, ch;
 296             if (edit_drop_hotkey_menu (e, par))         /* first check alt-f, alt-e, alt-s, etc for drop menus */
 297                 return 1;
 298             if (!edit_translate_key (e, 0, par, get_key_state (), &cmd, &ch))
 299                 return 0;
 300             edit_execute_key_command (e, cmd, ch);
 301             edit_update_screen (e);
 302         }
 303         return 1;
 304     case WIDGET_COMMAND:
 305         edit_execute_key_command (e, par, -1);
 306         edit_update_screen (e);
 307         return 1;
 308     case WIDGET_CURSOR:
 309         widget_move (&e->widget, e->curs_row + EDIT_TEXT_VERTICAL_OFFSET, e->curs_col + e->start_col);
 310         return 1;
 311     }
 312     return default_proc (h, msg, par);
 313 }