1 /* 2 * $Id: progressbox.c,v 1.21 2012/07/03 00:12:52 tom Exp $ 3 * 4 * progressbox.c -- implements the progress box 5 * 6 * Copyright 2005 Valery Reznic 7 * Copyright 2006-2011 Thomas E. Dickey 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU Lesser General Public License as 11 * published by the Free Software Foundation; either version 2.1 of the 12 * License, or (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, but 15 * WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * Lesser General Public License for more details. 18 * 19 * You should have received a copy of the GNU Lesser General Public 20 * License along with this program; if not, write to 21 * Free Software Foundation, Inc. 22 * 51 Franklin St., Fifth Floor 23 * Boston, MA 02110, USA. 24 */ 25 26 #include <dialog.h> 27 #include <dlg_keys.h> 28 29 #define MIN_HIGH (4) 30 #define MIN_WIDE (10 + 2 * (2 + MARGIN)) 31 32 typedef struct { 33 DIALOG_CALLBACK obj; 34 WINDOW *text; 35 char line[MAX_LEN + 1]; 36 int is_eof; 37 } MY_OBJ; 38 39 /* 40 * Return current line of text. 41 */ 42 static char * 43 get_line(MY_OBJ * obj) 44 { 45 FILE *fp = obj->obj.input; 46 int col = 0; 47 int j, tmpint, ch; 48 49 while (1) { 50 if ((ch = getc(fp)) == EOF) { 51 obj->is_eof = 1; 52 if (col) { 53 break; 54 } else { 55 return NULL; 56 } 57 } 58 if (ch == '\n') 59 break; 60 if (ch == '\r') 61 break; 62 if ((ch == TAB) && (dialog_vars.tab_correct)) { 63 tmpint = dialog_state.tab_len 64 - (col % dialog_state.tab_len); 65 for (j = 0; j < tmpint; j++) { 66 if (col < MAX_LEN) 67 obj->line[col] = ' '; 68 ++col; 69 } 70 } else { 71 obj->line[col] = (char) ch; 72 ++col; 73 } 74 if (col >= MAX_LEN) 75 break; 76 } 77 78 obj->line[col] = '\0'; 79 80 return obj->line; 81 } 82 83 /* 84 * Print a new line of text. 85 */ 86 static void 87 print_line(MY_OBJ * obj, WINDOW *win, int row, int width) 88 { 89 int i, y, x; 90 char *line = obj->line; 91 92 (void) wmove(win, row, 0); /* move cursor to correct line */ 93 (void) waddch(win, ' '); 94 #ifdef NCURSES_VERSION 95 (void) waddnstr(win, line, MIN((int) strlen(line), width - 2)); 96 #else 97 line[MIN((int) strlen(line), width - 2)] = '\0'; 98 waddstr(win, line); 99 #endif 100 101 getyx(win, y, x); 102 (void) y; 103 /* Clear 'residue' of previous line */ 104 for (i = 0; i < width - x; i++) 105 (void) waddch(win, ' '); 106 } 107 108 static int 109 pause_for_ok(WINDOW *dialog, int height, int width) 110 { 111 /* *INDENT-OFF* */ 112 static DLG_KEYS_BINDING binding[] = { 113 HELPKEY_BINDINGS, 114 ENTERKEY_BINDINGS, 115 TRAVERSE_BINDINGS, 116 END_KEYS_BINDING 117 }; 118 /* *INDENT-ON* */ 119 120 int button; 121 int key = 0, fkey; 122 int result = DLG_EXIT_UNKNOWN; 123 const char **buttons = dlg_ok_label(); 124 int check; 125 int save_nocancel = dialog_vars.nocancel; 126 bool redraw = TRUE; 127 128 dialog_vars.nocancel = TRUE; 129 button = dlg_default_button(); 130 131 dlg_register_window(dialog, "progressbox", binding); 132 dlg_register_buttons(dialog, "progressbox", buttons); 133 134 dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr); 135 mouse_mkbutton(height - 2, width / 2 - 4, 6, '\n'); 136 137 while (result == DLG_EXIT_UNKNOWN) { 138 if (redraw) { 139 redraw = FALSE; 140 if (button < 0) 141 button = 0; 142 dlg_draw_buttons(dialog, 143 height - 2, 0, 144 buttons, button, 145 FALSE, width); 146 } 147 148 key = dlg_mouse_wgetch(dialog, &fkey); 149 if (dlg_result_key(key, fkey, &result)) 150 break; 151 152 if (!fkey && (check = dlg_char_to_button(key, buttons)) >= 0) { 153 result = dlg_ok_buttoncode(check); 154 break; 155 } 156 157 if (fkey) { 158 switch (key) { 159 case DLGK_FIELD_NEXT: 160 button = dlg_next_button(buttons, button); 161 redraw = TRUE; 162 break; 163 case DLGK_FIELD_PREV: 164 button = dlg_prev_button(buttons, button); 165 redraw = TRUE; 166 break; 167 case DLGK_ENTER: 168 result = dlg_ok_buttoncode(button); 169 break; 170 default: 171 if (is_DLGK_MOUSE(key)) { 172 result = dlg_ok_buttoncode(key - M_EVENT); 173 if (result < 0) 174 result = DLG_EXIT_OK; 175 } else { 176 beep(); 177 } 178 break; 179 } 180 181 } else { 182 beep(); 183 } 184 } 185 dlg_unregister_window(dialog); 186 187 dialog_vars.nocancel = save_nocancel; 188 return result; 189 } 190 191 int 192 dlg_progressbox(const char *title, 193 const char *cprompt, 194 int height, 195 int width, 196 int pauseopt, 197 FILE *fp) 198 { 199 int i; 200 int x, y, thigh; 201 WINDOW *dialog, *text; 202 MY_OBJ *obj; 203 char *prompt = dlg_strclone(cprompt); 204 int result; 205 206 dlg_tab_correct_str(prompt); 207 dlg_auto_size(title, prompt, &height, &width, MIN_HIGH, MIN_WIDE); 208 dlg_print_size(height, width); 209 dlg_ctl_size(height, width); 210 211 x = dlg_box_x_ordinate(width); 212 y = dlg_box_y_ordinate(height); 213 thigh = height - (2 * MARGIN); 214 215 dialog = dlg_new_window(height, width, y, x); 216 217 dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr); 218 dlg_draw_title(dialog, title); 219 dlg_draw_helpline(dialog, FALSE); 220 221 if (*prompt != '\0') { 222 int y2, x2; 223 224 (void) wattrset(dialog, dialog_attr); 225 dlg_print_autowrap(dialog, prompt, height, width); 226 getyx(dialog, y2, x2); 227 (void) x2; 228 ++y2; 229 wmove(dialog, y2, MARGIN); 230 for (i = 0; i < getmaxx(dialog) - 2 * MARGIN; i++) 231 (void) waddch(dialog, dlg_boxchar(ACS_HLINE)); 232 y += y2; 233 thigh -= y2; 234 } 235 236 /* Create window for text region, used for scrolling text */ 237 text = dlg_sub_window(dialog, 238 thigh, 239 width - (2 * MARGIN), 240 y + MARGIN, 241 x + MARGIN); 242 243 (void) wrefresh(dialog); 244 245 (void) wmove(dialog, thigh, (MARGIN + 1)); 246 (void) wnoutrefresh(dialog); 247 248 obj = dlg_calloc(MY_OBJ, 1); 249 assert_ptr(obj, "dlg_progressbox"); 250 251 obj->obj.input = fp; 252 obj->obj.win = dialog; 253 obj->text = text; 254 255 dlg_attr_clear(text, thigh, getmaxx(text), dialog_attr); 256 for (i = 0; get_line(obj); i++) { 257 if (i < thigh) { 258 print_line(obj, text, i, width - (2 * MARGIN)); 259 } else { 260 scrollok(text, TRUE); 261 scroll(text); 262 scrollok(text, FALSE); 263 print_line(obj, text, thigh - 1, width - (2 * MARGIN)); 264 } 265 (void) wrefresh(text); 266 dlg_trace_win(dialog); 267 if (obj->is_eof) 268 break; 269 } 270 271 if (pauseopt) { 272 scrollok(text, TRUE); 273 wscrl(text, 1 + MARGIN); 274 (void) wrefresh(text); 275 result = pause_for_ok(dialog, height, width); 276 } else { 277 wrefresh(dialog); 278 result = DLG_EXIT_OK; 279 } 280 281 dlg_del_window(dialog); 282 free(prompt); 283 free(obj); 284 285 return result; 286 } 287 288 /* 289 * Display text from a stdin in a scrolling window. 290 */ 291 int 292 dialog_progressbox(const char *title, const char *cprompt, int height, int width) 293 { 294 int result; 295 result = dlg_progressbox(title, 296 cprompt, 297 height, 298 width, 299 FALSE, 300 dialog_state.pipe_input); 301 dialog_state.pipe_input = 0; 302 return result; 303 } 304