Ejemplo n.º 1
0
/*
 * Display text from a file in a dialog box, like in a "tail -f".
 */
int
dialog_tailbox(const char *title, const char *file, int height, int width, int bg_task)
{
    /* *INDENT-OFF* */
    static DLG_KEYS_BINDING binding[] = {
	HELPKEY_BINDINGS,
	ENTERKEY_BINDINGS,
	DLG_KEYS_DATA( DLGK_BEGIN,      '0' ),
	DLG_KEYS_DATA( DLGK_BEGIN,      KEY_BEG ),
	DLG_KEYS_DATA( DLGK_GRID_LEFT,  'H' ),
	DLG_KEYS_DATA( DLGK_GRID_LEFT,  'h' ),
	DLG_KEYS_DATA( DLGK_GRID_LEFT,  KEY_LEFT ),
	DLG_KEYS_DATA( DLGK_GRID_RIGHT, 'L' ),
	DLG_KEYS_DATA( DLGK_GRID_RIGHT, 'l' ),
	DLG_KEYS_DATA( DLGK_GRID_RIGHT, KEY_RIGHT ),
	END_KEYS_BINDING
    };
    /* *INDENT-ON* */

#ifdef KEY_RESIZE
    int old_height = height;
    int old_width = width;
#endif
    int fkey;
    int x, y, result, thigh;
    WINDOW *dialog, *text;
    const char **buttons = 0;
    MY_OBJ *obj;
    FILE *fd;
    int min_width = 12;

    /* Open input file for reading */
    if ((fd = fopen(file, "rb")) == NULL)
	dlg_exiterr("Can't open input file in dialog_tailbox().");

#ifdef KEY_RESIZE
  retry:
#endif
    dlg_auto_sizefile(title, file, &height, &width, 2, min_width);
    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) + (bg_task ? 0 : 2));

    dialog = dlg_new_window(height, width, y, x);

    dlg_mouse_setbase(x, y);

    /* Create window for text region, used for scrolling text */
    text = dlg_sub_window(dialog,
			  thigh,
			  width - (2 * MARGIN),
			  y + MARGIN,
			  x + MARGIN);

    dlg_draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
    dlg_draw_bottom_box(dialog);
    dlg_draw_title(dialog, title);
    dlg_draw_helpline(dialog, FALSE);

    if (!bg_task) {
	buttons = dlg_exit_label();
	dlg_button_layout(buttons, &min_width);
	dlg_draw_buttons(dialog, height - (2 * MARGIN), 0, buttons, FALSE,
			 FALSE, width);
    }

    (void) wmove(dialog, thigh, (MARGIN + 1));
    (void) wnoutrefresh(dialog);

    obj = dlg_calloc(MY_OBJ, 1);
    assert_ptr(obj, "dialog_tailbox");

    obj->obj.input = fd;
    obj->obj.win = dialog;
    obj->obj.handle_getc = handle_my_getc;
    obj->obj.handle_input = bg_task ? handle_input : 0;
    obj->obj.keep_bg = bg_task && dialog_vars.cant_kill;
    obj->obj.bg_task = bg_task;
    obj->text = text;
    obj->buttons = buttons;
    dlg_add_callback(&(obj->obj));

    dlg_register_window(dialog, "tailbox", binding);
    dlg_register_buttons(dialog, "tailbox", buttons);

    /* Print last page of text */
    dlg_attr_clear(text, thigh, getmaxx(text), dialog_attr);
    repaint_text(obj);

    if (bg_task) {
	result = DLG_EXIT_OK;
    } else {
	int ch;
	do {
	    ch = dlg_getc(dialog, &fkey);
#ifdef KEY_RESIZE
	    if (fkey && ch == KEY_RESIZE) {
		/* reset data */
		height = old_height;
		width = old_width;
		/* repaint */
		dlg_clear();
		dlg_del_window(dialog);
		refresh();
		dlg_mouse_free_regions();
		dlg_button_layout(buttons, &min_width);
		goto retry;
	    }
#endif
	}
	while (handle_my_getc(&(obj->obj), ch, fkey, &result));
    }
    dlg_mouse_free_regions();
    return result;
}
Ejemplo n.º 2
0
/*
 * Display text from a file in a dialog box.
 */
int
dialog_textbox(const char *title, const char *file, int height, int width)
{
    /* *INDENT-OFF* */
    static DLG_KEYS_BINDING binding[] = {
	HELPKEY_BINDINGS,
	ENTERKEY_BINDINGS,
	DLG_KEYS_DATA( DLGK_GRID_DOWN,  'J' ),
	DLG_KEYS_DATA( DLGK_GRID_DOWN,  'j' ),
	DLG_KEYS_DATA( DLGK_GRID_DOWN,  KEY_DOWN ),
	DLG_KEYS_DATA( DLGK_GRID_LEFT,  'H' ),
	DLG_KEYS_DATA( DLGK_GRID_LEFT,  'h' ),
	DLG_KEYS_DATA( DLGK_GRID_LEFT,  KEY_LEFT ),
	DLG_KEYS_DATA( DLGK_GRID_RIGHT, 'L' ),
	DLG_KEYS_DATA( DLGK_GRID_RIGHT, 'l' ),
	DLG_KEYS_DATA( DLGK_GRID_RIGHT, KEY_RIGHT ),
	DLG_KEYS_DATA( DLGK_GRID_UP,    'K' ),
	DLG_KEYS_DATA( DLGK_GRID_UP,    'k' ),
	DLG_KEYS_DATA( DLGK_GRID_UP,    KEY_UP ),
	DLG_KEYS_DATA( DLGK_PAGE_FIRST, 'g' ),
	DLG_KEYS_DATA( DLGK_PAGE_FIRST, KEY_HOME ),
	DLG_KEYS_DATA( DLGK_PAGE_LAST,  'G' ),
	DLG_KEYS_DATA( DLGK_PAGE_LAST,  KEY_END ),
	DLG_KEYS_DATA( DLGK_PAGE_LAST,  KEY_LL ),
	DLG_KEYS_DATA( DLGK_PAGE_NEXT,  ' ' ),
	DLG_KEYS_DATA( DLGK_PAGE_NEXT,  KEY_NPAGE ),
	DLG_KEYS_DATA( DLGK_PAGE_PREV,  'B' ),
	DLG_KEYS_DATA( DLGK_PAGE_PREV,  'b' ),
	DLG_KEYS_DATA( DLGK_PAGE_PREV,  KEY_PPAGE ),
	DLG_KEYS_DATA( DLGK_BEGIN,	'0' ),
	DLG_KEYS_DATA( DLGK_BEGIN,	KEY_BEG ),
	DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ),
	DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ),
	END_KEYS_BINDING
    };
    /* *INDENT-ON* */

#ifdef KEY_RESIZE
    int old_height = height;
    int old_width = width;
#endif
    long fpos;
    int x, y, cur_x, cur_y;
    int key = 0, fkey;
    int next = 0;
    int i, code, passed_end;
    char search_term[MAX_LEN + 1];
    MY_OBJ obj;
    WINDOW *dialog;
    bool moved;
    int result = DLG_EXIT_UNKNOWN;
    int button = dlg_default_button();
    int min_width = 12;

    search_term[0] = '\0';	/* no search term entered yet */

    memset(&obj, 0, sizeof(obj));

    obj.begin_reached = TRUE;
    obj.buffer_first = TRUE;
    obj.end_reached = FALSE;
    obj.buttons = dlg_exit_label();

    /* Open input file for reading */
    if ((obj.fd = open(file, O_RDONLY)) == -1)
	dlg_exiterr("Can't open input file %s", file);

    /* Get file size. Actually, 'file_size' is the real file size - 1,
       since it's only the last byte offset from the beginning */
    lseek_end(&obj, 0L);

    /* Restore file pointer to beginning of file after getting file size */
    lseek_set(&obj, 0L);

    read_high(&obj, BUF_SIZE);

    dlg_button_layout(obj.buttons, &min_width);

#ifdef KEY_RESIZE
  retry:
#endif
    moved = TRUE;

    dlg_auto_sizefile(title, file, &height, &width, 2, min_width);
    dlg_print_size(height, width);
    dlg_ctl_size(height, width);

    x = dlg_box_x_ordinate(width);
    y = dlg_box_y_ordinate(height);

    dialog = dlg_new_window(height, width, y, x);
    dlg_register_window(dialog, "textbox", binding);
    dlg_register_buttons(dialog, "textbox", obj.buttons);

    dlg_mouse_setbase(x, y);

    /* Create window for text region, used for scrolling text */
    obj.text = dlg_sub_window(dialog, PAGE_LENGTH, PAGE_WIDTH, y + 1, x + 1);

    /* register the new window, along with its borders */
    dlg_mouse_mkbigregion(0, 0, PAGE_LENGTH + 2, width, KEY_MAX, 1, 1, 1 /* lines */ );
    dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr);
    dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr);
    dlg_draw_title(dialog, title);

    dlg_draw_buttons(dialog, PAGE_LENGTH + 2, 0, obj.buttons, button, FALSE, width);
    (void) wnoutrefresh(dialog);
    getyx(dialog, cur_y, cur_x);	/* Save cursor position */

    dlg_attr_clear(obj.text, PAGE_LENGTH, PAGE_WIDTH, dialog_attr);

    while (result == DLG_EXIT_UNKNOWN) {

	/*
	 * Update the screen according to whether we shifted up/down by a line
	 * or not.
	 */
	if (moved) {
	    if (next < 0) {
		(void) scrollok(obj.text, TRUE);
		(void) scroll(obj.text);	/* Scroll text region up one line */
		(void) scrollok(obj.text, FALSE);
		print_line(&obj, PAGE_LENGTH - 1, PAGE_WIDTH);
		(void) wnoutrefresh(obj.text);
	    } else if (next > 0) {
		/*
		 * We don't call print_page() here but use scrolling to ensure
		 * faster screen update.  However, 'end_reached' and
		 * 'page_length' should still be updated, and 'in_buf' should
		 * point to start of next page.  This is done by calling
		 * get_line() in the following 'for' loop.
		 */
		(void) scrollok(obj.text, TRUE);
		(void) wscrl(obj.text, -1);	/* Scroll text region down one line */
		(void) scrollok(obj.text, FALSE);
		obj.page_length = 0;
		passed_end = 0;
		for (i = 0; i < PAGE_LENGTH; i++) {
		    if (!i) {
			print_line(&obj, 0, PAGE_WIDTH);	/* print first line of page */
			(void) wnoutrefresh(obj.text);
		    } else
			(void) get_line(&obj);	/* Called to update 'end_reached' and 'in_buf' */
		    if (!passed_end)
			obj.page_length++;
		    if (obj.end_reached && !passed_end)
			passed_end = 1;
		}
	    } else {
		print_page(&obj, PAGE_LENGTH, PAGE_WIDTH);
	    }
	    print_position(&obj, dialog, height, width);
	    (void) wmove(dialog, cur_y, cur_x);		/* Restore cursor position */
	    wrefresh(dialog);
	}
	moved = FALSE;		/* assume we'll not move */
	next = 0;		/* ...but not scroll by a line */

	key = dlg_mouse_wgetch(dialog, &fkey);
	if (dlg_result_key(key, fkey, &result))
	    break;

	if (!fkey && (code = dlg_char_to_button(key, obj.buttons)) >= 0) {
	    result = dlg_ok_buttoncode(code);
	    break;
	}

	if (fkey) {
	    switch (key) {
	    default:
		if (is_DLGK_MOUSE(key)) {
		    result = dlg_exit_buttoncode(key - M_EVENT);
		    if (result < 0)
			result = DLG_EXIT_OK;
		} else {
		    beep();
		}
		break;
	    case DLGK_FIELD_NEXT:
		button = dlg_next_button(obj.buttons, button);
		if (button < 0)
		    button = 0;
		dlg_draw_buttons(dialog,
				 height - 2, 0,
				 obj.buttons, button,
				 FALSE, width);
		break;
	    case DLGK_FIELD_PREV:
		button = dlg_prev_button(obj.buttons, button);
		if (button < 0)
		    button = 0;
		dlg_draw_buttons(dialog,
				 height - 2, 0,
				 obj.buttons, button,
				 FALSE, width);
		break;
	    case DLGK_ENTER:
		if (dialog_vars.nook)
		    result = DLG_EXIT_OK;
		else
		    result = dlg_exit_buttoncode(button);
		break;
	    case DLGK_PAGE_FIRST:
		if (!obj.begin_reached) {
		    obj.begin_reached = 1;
		    /* First page not in buffer? */
		    fpos = ftell_obj(&obj);

		    if (fpos > obj.fd_bytes_read) {
			/* Yes, we have to read it in */
			lseek_set(&obj, 0L);

			read_high(&obj, BUF_SIZE);
		    }
		    obj.in_buf = 0;
		    moved = TRUE;
		}
		break;
	    case DLGK_PAGE_LAST:
		obj.end_reached = TRUE;
		/* Last page not in buffer? */
		fpos = ftell_obj(&obj);

		if (fpos < obj.file_size) {
		    /* Yes, we have to read it in */
		    lseek_end(&obj, -BUF_SIZE);

		    read_high(&obj, BUF_SIZE);
		}
		obj.in_buf = obj.bytes_read;
		back_lines(&obj, (long) PAGE_LENGTH);
		moved = TRUE;
		break;
	    case DLGK_GRID_UP:	/* Previous line */
		if (!obj.begin_reached) {
		    back_lines(&obj, obj.page_length + 1);
		    next = 1;
		    moved = TRUE;
		}
		break;
	    case DLGK_PAGE_PREV:	/* Previous page */
	    case DLGK_MOUSE(KEY_PPAGE):
		if (!obj.begin_reached) {
		    back_lines(&obj, obj.page_length + PAGE_LENGTH);
		    moved = TRUE;
		}
		break;
	    case DLGK_GRID_DOWN:	/* Next line */
		if (!obj.end_reached) {
		    obj.begin_reached = 0;
		    next = -1;
		    moved = TRUE;
		}
		break;
	    case DLGK_PAGE_NEXT:	/* Next page */
	    case DLGK_MOUSE(KEY_NPAGE):
		if (!obj.end_reached) {
		    obj.begin_reached = 0;
		    moved = TRUE;
		}
		break;
	    case DLGK_BEGIN:	/* Beginning of line */
		if (obj.hscroll > 0) {
		    obj.hscroll = 0;
		    /* Reprint current page to scroll horizontally */
		    back_lines(&obj, obj.page_length);
		    moved = TRUE;
		}
		break;
	    case DLGK_GRID_LEFT:	/* Scroll left */
		if (obj.hscroll > 0) {
		    obj.hscroll--;
		    /* Reprint current page to scroll horizontally */
		    back_lines(&obj, obj.page_length);
		    moved = TRUE;
		}
		break;
	    case DLGK_GRID_RIGHT:	/* Scroll right */
		if (obj.hscroll < MAX_LEN) {
		    obj.hscroll++;
		    /* Reprint current page to scroll horizontally */
		    back_lines(&obj, obj.page_length);
		    moved = TRUE;
		}
		break;
#ifdef KEY_RESIZE
	    case KEY_RESIZE:
		/* reset data */
		height = old_height;
		width = old_width;
		back_lines(&obj, obj.page_length);
		/* repaint */
		dlg_clear();
		dlg_del_window(dialog);
		refresh();
		dlg_mouse_free_regions();
		goto retry;
#endif
	    }
	} else {
	    switch (key) {
	    case '/':		/* Forward search */
	    case 'n':		/* Repeat forward search */
	    case '?':		/* Backward search */
	    case 'N':		/* Repeat backward search */
		moved = perform_search(&obj, height, width, key, search_term);
		fkey = FALSE;
		break;
	    default:
		beep();
		break;
	    }
	}
    }

    dlg_del_window(dialog);
    free(obj.buf);
    (void) close(obj.fd);
    dlg_mouse_free_regions();
    return result;
}