4  *  rangebox.c -- implements the rangebox dialog
6  *  Copyright 2012-2019,2020	Thomas E. Dickey
33     /* window in which the value and slider are drawn */
41     /* position and width of the slider field */
47     /* value to add to make slider move by one cell */
62     int col = data->value_col;  in digit_of()
65     while (++col < data->value_len) {  in digit_of()
77     char *next = 0;  in set_digit()
79     sprintf(buffer, "%*d", data->value_len, data->current);  in set_digit()
80     buffer[data->value_col] = (char) chr;  in set_digit()
82     if (next == 0 || *next == '\0') {  in set_digit()
83 	if ((check <= (long) data->max_value) &&  in set_digit()
84 	    (check >= (long) data->min_value)) {  in set_digit()
86 	    data->current = (int) check;  in set_digit()
100     if (value != data->current) {  in draw_value()
101 	WINDOW *win = data->window;  in draw_value()
104 	int ranges = (data->max_value + 1 - data->min_value);  in draw_value()
105 	int offset = (value - data->min_value);  in draw_value()
110 	if (ranges > data->slide_len) {  in draw_value()
111 	    scaled = (offset + data->slide_inc) / data->slide_inc;  in draw_value()
112 	} else if (ranges < data->slide_len) {  in draw_value()
113 	    scaled = (offset + 1) * data->slide_inc;  in draw_value()
119 	wmove(win, data->slide_y, data->slide_x);  in draw_value()
120 	for (n = 0; n < data->slide_len; ++n) {  in draw_value()
123 	wmove(win, data->slide_y, data->value_x);  in draw_value()
124 	wprintw(win, "%*d", data->value_len, value);  in draw_value()
125 	if ((gauge_attr & A_REVERSE) != 0) {  in draw_value()
130 	wmove(win, data->slide_y, data->slide_x);  in draw_value()
131 	for (n = 0; n < scaled; ++n) {  in draw_value()
141 	data->current = value;  in draw_value()
147 		   data->slide_len,  in draw_value()
148 		   data->slide_inc));  in draw_value()
155  * Allow the user to select from a range of values, e.g., using a slider.
166     /* *INDENT-OFF* */  in dialog_rangebox()
184 	DLG_KEYS_DATA( DLGK_ITEM_PREV,  '-' ),  in dialog_rangebox()
192     /* *INDENT-ON* */  in dialog_rangebox()
250     usable = (width - 2 - 4 * MARGIN);  in dialog_rangebox()
251     ranges = max_value - min_value + 1;  in dialog_rangebox()
259     data.value_x = (usable - data.value_len) / 2 + MARGIN;  in dialog_rangebox()
260     data.value_col = data.value_len - 1;  in dialog_rangebox()
263      * The slider is scaled, to try to use the width of the dialog.  in dialog_rangebox()
266 	data.slide_inc = (ranges + usable - 1) / usable;  in dialog_rangebox()
275     data.slide_x = (usable - data.slide_len) / 2 + MARGIN + 2;  in dialog_rangebox()
276     data.slide_y = height - 5;  in dialog_rangebox()
278     data.current = cur_value - 1;  in dialog_rangebox()
283     dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr);  in dialog_rangebox()
285     dlg_mouse_mkregion(data.slide_y - 1, data.slide_x - 1, 3, usable + 2, 'i');  in dialog_rangebox()
287 		  height - 6, data.slide_x - MARGIN,  in dialog_rangebox()
305 	button = (state < 0) ? 0 : state;  in dialog_rangebox()
306 	dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);  in dialog_rangebox()
307 	if (state < 0) {  in dialog_rangebox()
318 	if ((key2 = dlg_char_to_button(key, buttons)) >= 0) {  in dialog_rangebox()
321 	    /* handle function-keys */  in dialog_rangebox()
332 		    if (state < 0 && state > -data.value_len) {  in dialog_rangebox()
333 			--state;  in dialog_rangebox()
335 			state = dlg_prev_ok_buttonindex(state, -data.value_len);  in dialog_rangebox()
339 		    if (state < 0) {  in dialog_rangebox()
342 			state = dlg_next_ok_buttonindex(state, -data.value_len);  in dialog_rangebox()
352 		    if (state < 0) {  in dialog_rangebox()
353 			cur_value -= digit_of(&data);  in dialog_rangebox()
355 			cur_value -= 1;  in dialog_rangebox()
361 		    if (state < 0) {  in dialog_rangebox()
370 		    cur_value -= data.slide_inc;  in dialog_rangebox()
391 		    state = -data.value_len;  in dialog_rangebox()
395 			result = dlg_ok_buttoncode(key - M_EVENT);  in dialog_rangebox()
396 			if (result < 0)  in dialog_rangebox()
401 	    } else if (isdigit(key) && state < 0) {  in dialog_rangebox()
404 		    data.current--;  in dialog_rangebox()