/* * $Id: progressbox.c,v 1.23 2012/12/21 10:00:05 tom Exp $ * * progressbox.c -- implements the progress box * * Copyright 2005 Valery Reznic * Copyright 2006-2012 Thomas E. Dickey * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this program; if not, write to * Free Software Foundation, Inc. * 51 Franklin St., Fifth Floor * Boston, MA 02110, USA. */ #include #include #define MIN_HIGH (4) #define MIN_WIDE (10 + 2 * (2 + MARGIN)) typedef struct { DIALOG_CALLBACK obj; WINDOW *text; char line[MAX_LEN + 1]; int is_eof; } MY_OBJ; /* * Return current line of text. */ static char * get_line(MY_OBJ * obj) { FILE *fp = obj->obj.input; int col = 0; int j, tmpint, ch; for (;;) { if ((ch = getc(fp)) == EOF) { obj->is_eof = 1; if (col) { break; } else { return NULL; } } if (ch == '\n') break; if (ch == '\r') break; if (col >= MAX_LEN) continue; if ((ch == TAB) && (dialog_vars.tab_correct)) { tmpint = dialog_state.tab_len - (col % dialog_state.tab_len); for (j = 0; j < tmpint; j++) { if (col < MAX_LEN) { obj->line[col] = ' '; ++col; } else { break; } } } else { obj->line[col] = (char) ch; ++col; } } obj->line[col] = '\0'; return obj->line; } /* * Print a new line of text. */ static void print_line(MY_OBJ * obj, WINDOW *win, int row, int width) { int i, y, x; char *line = obj->line; (void) wmove(win, row, 0); /* move cursor to correct line */ (void) waddch(win, ' '); #ifdef NCURSES_VERSION (void) waddnstr(win, line, MIN((int) strlen(line), width - 2)); #else line[MIN((int) strlen(line), width - 2)] = '\0'; waddstr(win, line); #endif getyx(win, y, x); (void) y; /* Clear 'residue' of previous line */ for (i = 0; i < width - x; i++) (void) waddch(win, ' '); } static int pause_for_ok(WINDOW *dialog, int height, int width) { /* *INDENT-OFF* */ static DLG_KEYS_BINDING binding[] = { HELPKEY_BINDINGS, ENTERKEY_BINDINGS, TRAVERSE_BINDINGS, END_KEYS_BINDING }; /* *INDENT-ON* */ int button; int key = 0, fkey; int result = DLG_EXIT_UNKNOWN; const char **buttons = dlg_ok_label(); int check; int save_nocancel = dialog_vars.nocancel; bool redraw = TRUE; dialog_vars.nocancel = TRUE; button = dlg_default_button(); dlg_register_window(dialog, "progressbox", binding); dlg_register_buttons(dialog, "progressbox", buttons); dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr); mouse_mkbutton(height - 2, width / 2 - 4, 6, '\n'); while (result == DLG_EXIT_UNKNOWN) { if (redraw) { redraw = FALSE; if (button < 0) button = 0; dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width); } key = dlg_mouse_wgetch(dialog, &fkey); if (dlg_result_key(key, fkey, &result)) break; if (!fkey && (check = dlg_char_to_button(key, buttons)) >= 0) { result = dlg_ok_buttoncode(check); break; } if (fkey) { switch (key) { case DLGK_FIELD_NEXT: button = dlg_next_button(buttons, button); redraw = TRUE; break; case DLGK_FIELD_PREV: button = dlg_prev_button(buttons, button); redraw = TRUE; break; case DLGK_ENTER: result = dlg_ok_buttoncode(button); break; default: if (is_DLGK_MOUSE(key)) { result = dlg_ok_buttoncode(key - M_EVENT); if (result < 0) result = DLG_EXIT_OK; } else { beep(); } break; } } else { beep(); } } dlg_unregister_window(dialog); dialog_vars.nocancel = save_nocancel; return result; } int dlg_progressbox(const char *title, const char *cprompt, int height, int width, int pauseopt, FILE *fp) { int i; int x, y, thigh; WINDOW *dialog, *text; MY_OBJ *obj; char *prompt = dlg_strclone(cprompt); int result; dlg_tab_correct_str(prompt); dlg_auto_size(title, prompt, &height, &width, MIN_HIGH, MIN_WIDE); dlg_print_size(height, width); dlg_ctl_size(height, width); x = dlg_box_x_ordinate(width); y = dlg_box_y_ordinate(height); thigh = height - (2 * MARGIN); dialog = dlg_new_window(height, width, y, x); dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr); dlg_draw_title(dialog, title); dlg_draw_helpline(dialog, FALSE); if (*prompt != '\0') { int y2, x2; (void) wattrset(dialog, dialog_attr); dlg_print_autowrap(dialog, prompt, height, width); getyx(dialog, y2, x2); (void) x2; ++y2; wmove(dialog, y2, MARGIN); for (i = 0; i < getmaxx(dialog) - 2 * MARGIN; i++) (void) waddch(dialog, dlg_boxchar(ACS_HLINE)); y += y2; thigh -= y2; } /* Create window for text region, used for scrolling text */ text = dlg_sub_window(dialog, thigh, width - (2 * MARGIN), y + MARGIN, x + MARGIN); (void) wrefresh(dialog); (void) wmove(dialog, thigh, (MARGIN + 1)); (void) wnoutrefresh(dialog); obj = dlg_calloc(MY_OBJ, 1); assert_ptr(obj, "dlg_progressbox"); obj->obj.input = fp; obj->obj.win = dialog; obj->text = text; dlg_attr_clear(text, thigh, getmaxx(text), dialog_attr); for (i = 0; get_line(obj); i++) { if (i < thigh) { print_line(obj, text, i, width - (2 * MARGIN)); } else { scrollok(text, TRUE); scroll(text); scrollok(text, FALSE); print_line(obj, text, thigh - 1, width - (2 * MARGIN)); } (void) wrefresh(text); dlg_trace_win(dialog); if (obj->is_eof) break; } if (pauseopt) { scrollok(text, TRUE); wscrl(text, 1 + MARGIN); (void) wrefresh(text); result = pause_for_ok(dialog, height, width); } else { wrefresh(dialog); result = DLG_EXIT_OK; } dlg_del_window(dialog); free(prompt); free(obj); return result; } /* * Display text from a stdin in a scrolling window. */ int dialog_progressbox(const char *title, const char *cprompt, int height, int width) { int result; result = dlg_progressbox(title, cprompt, height, width, FALSE, dialog_state.pipe_input); dialog_state.pipe_input = 0; return result; }