2 * $Id: rangebox.c,v 1.32 2020/11/22 23:25:09 tom Exp $
4 * rangebox.c -- implements the rangebox dialog
6 * Copyright 2012-2019,2020 Thomas E. Dickey
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU Lesser General Public License, version 2.1
10 * as published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this program; if not, write to
19 * Free Software Foundation, Inc.
20 * 51 Franklin St., Fifth Floor
21 * Boston, MA 02110, USA.
24 #include <dlg_internals.h>
29 #define MIN_HIGH (ONE_HIGH + 1 + (4 * MARGIN))
30 #define MIN_WIDE (10 + 2 + (2 * MARGIN))
33 /* window in which the value and slider are drawn */
37 /* position and width of the numeric field */
41 /* position and width of the slider field */
45 /* current value drawn */
47 /* value to add to make slider move by one cell */
55 sprintf(temp, "%d", value);
56 return (int) strlen(temp);
60 digit_of(VALUE * data)
62 int col = data->value_col;
65 while (++col < data->value_len) {
72 set_digit(VALUE * data, int chr)
79 sprintf(buffer, "%*d", data->value_len, data->current);
80 buffer[data->value_col] = (char) chr;
81 check = strtol(buffer, &next, 10);
82 if (next == 0 || *next == '\0') {
83 if ((check <= (long) data->max_value) &&
84 (check >= (long) data->min_value)) {
86 data->current = (int) check;
94 * This is similar to the gauge code, but differs in the way the number
98 draw_value(VALUE * data, int value)
100 if (value != data->current) {
101 WINDOW *win = data->window;
104 int ranges = (data->max_value + 1 - data->min_value);
105 int offset = (value - data->min_value);
110 if (ranges > data->slide_len) {
111 scaled = (offset + data->slide_inc) / data->slide_inc;
112 } else if (ranges < data->slide_len) {
113 scaled = (offset + 1) * data->slide_inc;
118 dlg_attrset(win, gauge_attr);
119 wmove(win, data->slide_y, data->slide_x);
120 for (n = 0; n < data->slide_len; ++n) {
121 (void) waddch(win, ' ');
123 wmove(win, data->slide_y, data->value_x);
124 wprintw(win, "%*d", data->value_len, value);
125 if ((gauge_attr & A_REVERSE) != 0) {
126 dlg_attroff(win, A_REVERSE);
128 dlg_attrset(win, A_REVERSE);
130 wmove(win, data->slide_y, data->slide_x);
131 for (n = 0; n < scaled; ++n) {
132 chtype ch2 = winch(win);
133 if (gauge_attr & A_REVERSE) {
136 (void) waddch(win, ch2);
138 dlg_attrset(win, dialog_attr);
141 data->current = value;
143 DLG_TRACE(("# drew %d offset %d scaled %d limit %d inc %d\n",
155 * Allow the user to select from a range of values, e.g., using a slider.
158 dialog_rangebox(const char *title,
167 static DLG_KEYS_BINDING binding[] = {
168 DLG_KEYS_DATA( DLGK_DELETE_RIGHT,KEY_DC ),
172 DLG_KEYS_DATA( DLGK_FIELD_NEXT, CHR_NEXT ),
173 DLG_KEYS_DATA( DLGK_FIELD_NEXT, KEY_RIGHT ),
174 DLG_KEYS_DATA( DLGK_FIELD_NEXT, TAB ),
175 DLG_KEYS_DATA( DLGK_FIELD_PREV, CHR_BACKSPACE ),
176 DLG_KEYS_DATA( DLGK_FIELD_PREV, CHR_PREVIOUS ),
177 DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_BTAB ),
178 DLG_KEYS_DATA( DLGK_FIELD_PREV, KEY_LEFT ),
179 DLG_KEYS_DATA( DLGK_ITEM_FIRST, KEY_HOME),
180 DLG_KEYS_DATA( DLGK_ITEM_LAST, KEY_END),
181 DLG_KEYS_DATA( DLGK_ITEM_LAST, KEY_LL ),
182 DLG_KEYS_DATA( DLGK_ITEM_NEXT, '+'),
183 DLG_KEYS_DATA( DLGK_ITEM_NEXT, KEY_DOWN),
184 DLG_KEYS_DATA( DLGK_ITEM_PREV, '-' ),
185 DLG_KEYS_DATA( DLGK_ITEM_PREV, KEY_UP ),
186 DLG_KEYS_DATA( DLGK_PAGE_NEXT, KEY_NEXT),
187 DLG_KEYS_DATA( DLGK_PAGE_NEXT, KEY_NPAGE),
188 DLG_KEYS_DATA( DLGK_PAGE_PREV, KEY_PPAGE ),
189 DLG_KEYS_DATA( DLGK_PAGE_PREV, KEY_PREVIOUS ),
195 int old_height = height;
196 int old_width = width;
201 int result = DLG_EXIT_UNKNOWN;
203 int state = dlg_default_button();
204 const char **buttons = dlg_ok_labels();
206 char buffer[MAX_LEN];
207 int cur_value = default_value;
212 DLG_TRACE(("# tailbox args:\n"));
213 DLG_TRACE2S("title", title);
214 DLG_TRACE2S("message", cprompt);
215 DLG_TRACE2N("height", height);
216 DLG_TRACE2N("width", width);
217 DLG_TRACE2N("minval", min_value);
218 DLG_TRACE2N("maxval", max_value);
219 DLG_TRACE2N("default", default_value);
221 if (max_value < min_value)
222 max_value = min_value;
223 if (cur_value > max_value)
224 cur_value = max_value;
225 if (cur_value < min_value)
226 cur_value = min_value;
234 prompt = dlg_strclone(cprompt);
235 dlg_auto_size(title, prompt, &height, &width, MIN_HIGH, MIN_WIDE);
237 dlg_button_layout(buttons, &width);
238 dlg_print_size(height, width);
239 dlg_ctl_size(height, width);
241 dialog = dlg_new_window(height, width,
242 yorg = dlg_box_y_ordinate(height),
243 xorg = dlg_box_x_ordinate(width));
245 data.window = dialog;
247 data.min_value = min_value;
248 data.max_value = max_value;
250 usable = (width - 2 - 4 * MARGIN);
251 ranges = max_value - min_value + 1;
254 * Center the number after allowing for its maximum number of digits.
256 data.value_len = digits_of(max_value);
257 if (digits_of(min_value) > data.value_len)
258 data.value_len = digits_of(min_value);
259 data.value_x = (usable - data.value_len) / 2 + MARGIN;
260 data.value_col = data.value_len - 1;
263 * The slider is scaled, to try to use the width of the dialog.
265 if (ranges > usable) {
266 data.slide_inc = (ranges + usable - 1) / usable;
267 data.slide_len = 1 + ranges / data.slide_inc;
268 } else if (ranges < usable) {
269 data.slide_inc = usable / ranges;
270 data.slide_len = ranges * data.slide_inc;
273 data.slide_len = usable;
275 data.slide_x = (usable - data.slide_len) / 2 + MARGIN + 2;
276 data.slide_y = height - 5;
278 data.current = cur_value - 1;
280 dlg_register_window(dialog, "rangebox", binding);
281 dlg_register_buttons(dialog, "rangebox", buttons);
283 dlg_draw_box2(dialog, 0, 0, height, width, dialog_attr, border_attr, border2_attr);
284 dlg_mouse_setbase(xorg, yorg);
285 dlg_mouse_mkregion(data.slide_y - 1, data.slide_x - 1, 3, usable + 2, 'i');
286 dlg_draw_box2(dialog,
287 height - 6, data.slide_x - MARGIN,
288 2 + MARGIN, data.slide_len + 2 * MARGIN,
292 dlg_draw_bottom_box2(dialog, border_attr, border2_attr, dialog_attr);
293 dlg_draw_title(dialog, title);
294 dlg_draw_helpline(dialog, FALSE);
296 dlg_attrset(dialog, dialog_attr);
297 dlg_print_autowrap(dialog, prompt, height, width);
299 dlg_trace_win(dialog);
301 while (result == DLG_EXIT_UNKNOWN) {
304 draw_value(&data, cur_value);
305 button = (state < 0) ? 0 : state;
306 dlg_draw_buttons(dialog, height - 2, 0, buttons, button, FALSE, width);
308 data.value_col = data.value_len + state;
309 wmove(dialog, data.slide_y, data.value_x + data.value_col);
312 key = dlg_mouse_wgetch(dialog, &fkey);
313 if (dlg_result_key(key, fkey, &result)) {
314 if (!dlg_button_key(result, &button, &key, &fkey))
318 if ((key2 = dlg_char_to_button(key, buttons)) >= 0) {
321 /* handle function-keys */
326 result = dlg_enter_buttoncode(button);
329 result = dlg_ok_buttoncode(button);
331 case DLGK_FIELD_PREV:
332 if (state < 0 && state > -data.value_len) {
335 state = dlg_prev_ok_buttonindex(state, -data.value_len);
338 case DLGK_FIELD_NEXT:
342 state = dlg_next_ok_buttonindex(state, -data.value_len);
345 case DLGK_ITEM_FIRST:
346 cur_value = min_value;
349 cur_value = max_value;
353 cur_value -= digit_of(&data);
357 if (cur_value < min_value)
358 cur_value = min_value;
362 cur_value += digit_of(&data);
366 if (cur_value > max_value)
367 cur_value = max_value;
370 cur_value -= data.slide_inc;
371 if (cur_value < min_value)
372 cur_value = min_value;
375 cur_value += data.slide_inc;
376 if (cur_value > max_value)
377 cur_value = max_value;
381 dlg_will_resize(dialog);
387 _dlg_resize_cleanup(dialog);
390 case DLGK_MOUSE('i'):
391 state = -data.value_len;
394 if (is_DLGK_MOUSE(key)) {
395 result = dlg_ok_buttoncode(key - M_EVENT);
397 result = DLG_EXIT_OK;
401 } else if (isdigit(key) && state < 0) {
402 if (set_digit(&data, key)) {
403 cur_value = data.current;
412 sprintf(buffer, "%d", cur_value);
413 dlg_add_result(buffer);
416 dlg_del_window(dialog);
417 dlg_mouse_free_regions();