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-rw-r--r--contrib/bsddialog/lib/slider.c670
1 files changed, 670 insertions, 0 deletions
diff --git a/contrib/bsddialog/lib/slider.c b/contrib/bsddialog/lib/slider.c
new file mode 100644
index 000000000000..534253470849
--- /dev/null
+++ b/contrib/bsddialog/lib/slider.c
@@ -0,0 +1,670 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2025 Braulio Rivas
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <curses.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "bsddialog.h"
+#include "bsddialog_theme.h"
+#include "lib_util.h"
+
+#define MINHSLIDER 13
+#define MINWSLIDER 36
+
+#define NULLWIN -1
+#define START_WIN 0
+#define END_WIN 1
+#define STEP_WIN 2
+#define SLIDER_WIN 3
+#define NWIN 4
+
+enum operation {
+ MOVERIGHT,
+ MOVEFARRIGHT,
+ MOVEFASTRIGHT,
+ MOVELEFT,
+ MOVEFARLEFT,
+ MOVEFASTLEFT,
+ INCREASELEFT,
+ DECREASELEFT,
+ INCREASERIGHT,
+ DECREASERIGHT,
+ INCREASESTEP,
+ DECREASESTEP,
+};
+
+struct sliderctl {
+ enum operation op;
+ unsigned long (*spaces)[2];
+ int nspaces; /* api unsigned, but segfault handlesliderctl():MOVELEFT */
+ unsigned long length;
+ unsigned long *start;
+ unsigned long *end;
+ unsigned long step;
+};
+
+static int crashes(long x, long y, long a, long b)
+{
+ return ((x <= a && a <= y) || (x <= b && b <= y));
+}
+
+static int fits(long x, long y, long a, long b)
+{
+ return ((x <= a) && (b <= y));
+}
+
+static void handlesliderctl(struct sliderctl *sliderctl)
+{
+ int i, step, tmpstep;
+ unsigned long x, y, size, old_start, old_end;
+ signed long new_start, new_end;
+
+ step = sliderctl->step;
+ old_start = *(sliderctl->start);
+ new_start = old_start;
+ old_end = *(sliderctl->end);
+ new_end = old_end;
+ size = old_end - old_start + 1;
+
+ switch (sliderctl->op) {
+ case MOVERIGHT:
+ new_start = old_start + step;
+ new_end = old_end + step;
+
+ for (i = 0; i < sliderctl->nspaces; i++) {
+ x = (sliderctl->spaces)[i][0];
+ y = (sliderctl->spaces)[i][1];
+
+ if (crashes(x, y, new_start, new_end)) {
+ new_start = y + 1;
+ new_end = new_start + size - 1;
+ break;
+ }
+ }
+ break;
+ case MOVELEFT:
+ new_start = old_start - step;
+ new_end = old_end - step;
+
+ for (i = sliderctl->nspaces - 1; i >= 0; i--) {
+ x = (sliderctl->spaces)[i][0];
+ y = (sliderctl->spaces)[i][1];
+
+ if (crashes(x, y, new_start, new_end)) {
+ new_end = x - 1;
+ new_start = new_end - size + 1;
+ break;
+ }
+ }
+ break;
+ case INCREASELEFT:
+ new_start = old_start + step;
+ break;
+ case DECREASELEFT:
+ new_start = old_start - step;
+ for (i = 0; i < sliderctl->nspaces; i++) {
+ x = (sliderctl->spaces)[i][0];
+ y = (sliderctl->spaces)[i][1];
+
+ if (crashes(x, y, new_start, new_end)) {
+ new_start = old_start;
+ break;
+ }
+ }
+ break;
+ case INCREASERIGHT:
+ new_end = old_end + step;
+ for (i = 0; i < sliderctl->nspaces; i++) {
+ x = (sliderctl->spaces)[i][0];
+ y = (sliderctl->spaces)[i][1];
+
+ if (crashes(x, y, new_start, new_end)) {
+ new_end = old_end;
+ break;
+ }
+ }
+ break;
+ case DECREASERIGHT:
+ new_end = old_end - step;
+ break;
+ case MOVEFARLEFT:
+ new_start = 0;
+ new_end = size - 1;
+ for (i = 0; i < sliderctl->nspaces; i++) {
+ x = (sliderctl->spaces)[i][0];
+ y = (sliderctl->spaces)[i][1];
+
+ if (crashes(x, y, new_start, new_end)) {
+ new_start = y + 1;
+ new_end = new_start + size - 1;
+ break;
+ }
+ }
+ break;
+ case MOVEFARRIGHT:
+ new_end = (sliderctl->length) - 1;
+ new_start = new_end - size + 1;
+ for (i = sliderctl->nspaces - 1; i >= 0; i--) {
+ x = (sliderctl->spaces)[i][0];
+ y = (sliderctl->spaces)[i][1];
+
+ if (crashes(x, y, new_start, new_end)) {
+ new_end = x - 1;
+ new_start = new_end - size + 1;
+ break;
+ }
+ }
+ break;
+ case MOVEFASTLEFT:
+ if (size < 10) {
+ tmpstep = 1;
+ } else {
+ tmpstep = ((sliderctl->length) * 10) / 100;
+ }
+ new_start = old_start - tmpstep;
+ new_end = old_end - tmpstep;
+
+ for (i = sliderctl->nspaces - 1; i >= 0; i--) {
+ x = (sliderctl->spaces)[i][0];
+ y = (sliderctl->spaces)[i][1];
+
+ if (crashes(x, y, new_start, new_end)) {
+ new_end = x - 1;
+ new_start = new_end - size + 1;
+ break;
+ }
+ }
+ break;
+ case MOVEFASTRIGHT:
+ if (size < 10) {
+ tmpstep = 1;
+ } else {
+ tmpstep = ((sliderctl->length) * 10) / 100;
+ }
+ new_start = old_start + tmpstep;
+ new_end = old_end + tmpstep;
+
+ for (i = 0; i < sliderctl->nspaces; i++) {
+ x = (sliderctl->spaces)[i][0];
+ y = (sliderctl->spaces)[i][1];
+
+ if (crashes(x, y, new_start, new_end)) {
+ new_start = y + 1;
+ new_end = new_start + size - 1;
+ break;
+ }
+ }
+ break;
+ case INCREASESTEP:
+ ++step;
+ break;
+ case DECREASESTEP:
+ if (step > 1) {
+ --step;
+ }
+ break;
+ }
+
+ if (fits(0, (sliderctl->length) - 1, new_start, new_end) != 1) {
+ new_start = old_start;
+ new_end = old_end;
+ }
+
+ if (new_start > new_end) {
+ new_start = old_start;
+ new_end = old_end;
+ }
+
+ sliderctl->step = step;
+
+ *(sliderctl->start) = new_start;
+ *(sliderctl->end) = new_end;
+}
+
+static void
+drawsquare(struct bsddialog_conf *conf, WINDOW *win, enum elevation elev,
+ bool focus, const char *fmt, unsigned long value)
+{
+ int h, l, w;
+
+ getmaxyx(win, h, w);
+ draw_borders(conf, win, elev);
+ if (focus) {
+ l = 2 + w % 2;
+ wattron(win, t.dialog.arrowcolor);
+ mvwhline(win, 0, w / 2 - l / 2, UARROW(conf), l);
+ mvwhline(win, h - 1, w / 2 - l / 2, DARROW(conf), l);
+ wattroff(win, t.dialog.arrowcolor);
+ }
+
+ if (focus)
+ wattron(win, t.menu.f_namecolor);
+
+ mvwprintw(win, 1, 1, fmt, value);
+
+ if (focus)
+ wattroff(win, t.menu.f_namecolor);
+
+ wnoutrefresh(win);
+}
+
+static void
+print_slider(struct bsddialog_conf *conf, WINDOW *win,
+ unsigned long spaces[][2], int nspaces, unsigned long length,
+ unsigned long *start, unsigned long *end, bool active)
+{
+ int i, y, x, l, height, width;
+ unsigned long s, e;
+ chtype ch;
+
+ getmaxyx(win, height, width);
+ wclear(win);
+ draw_borders(conf, win, RAISED);
+
+ if (active) {
+ wattron(win, t.dialog.arrowcolor);
+ mvwvline(win, 1, 0, LARROW(conf), 1);
+ mvwvline(win, 1, width - 1, RARROW(conf), 1);
+ wattroff(win, t.dialog.arrowcolor);
+ }
+
+ y = height / 2;
+ width -= 1;
+
+ ch = ' ' | bsddialog_color(BSDDIALOG_RED, BSDDIALOG_RED, 0);
+ for (i = 0; i < nspaces; i++) {
+ s = spaces[i][0];
+ e = spaces[i][1];
+
+ x = (s * width) / length;
+ l = ((e - s) * width) / length;
+
+ if ((e - s) == 0) {
+ l = 0;
+ } else if (l == 0) {
+ l = 1;
+ }
+
+ mvwhline(win, y, x + 1, ch, l);
+ }
+
+ ch = ' ' | t.bar.f_color;
+ s = ((*start) * width) / length;
+ l = (((*end) - (*start)) * width) / length;
+ if ((*end - *start) == 0) {
+ l = 0;
+ } else if (l == 0) {
+ l = 1;
+ }
+ mvwhline(win, y, s + 1, ch, l);
+
+ wnoutrefresh(win);
+}
+
+static int
+slider_draw(struct dialog *d, bool redraw, WINDOW *start_win, WINDOW *end_win,
+ WINDOW *size_win, WINDOW *step_win, WINDOW *slider_win, const char *unit)
+{
+ char *buf;
+ int yslider, xslider;
+
+ if (redraw) {
+ hide_dialog(d);
+ refresh(); /* Important for decreasing screen */
+ }
+ if (dialog_size_position(d, MINHSLIDER, MINWSLIDER, NULL) != 0)
+ return (BSDDIALOG_ERROR);
+ if (draw_dialog(d) != 0) /* doupdate in main loop */
+ return (BSDDIALOG_ERROR);
+ if (redraw)
+ refresh(); /* Important to fix grey lines expanding screen */
+ TEXTPAD(d, MINHSLIDER + HBUTTONS);
+
+ yslider = d->y + d->h - 15;
+ xslider = d->x + d->w / 2 - 17;
+ asprintf(&buf, "Start (%s)", unit);
+ mvwaddstr(d->widget, d->h - 16, d->w / 2 - 17, buf);
+ free(buf);
+ update_box(d->conf, start_win, yslider, xslider, 3, 17, RAISED);
+ asprintf(&buf, "End (%s)", unit);
+ mvwaddstr(d->widget, d->h - 16, d->w / 2, buf);
+ free(buf);
+ update_box(d->conf, end_win, yslider, xslider + 17, 3, 17, RAISED);
+ asprintf(&buf, "Size (%s)", unit);
+ mvwaddstr(d->widget, d->h - 12, d->w / 2 - 17, buf);
+ free(buf);
+ update_box(d->conf, size_win, yslider + 4, xslider, 3, 17, RAISED);
+ asprintf(&buf, "Step (%s)", unit);
+ mvwaddstr(d->widget, d->h - 12, d->w / 2, buf);
+ free(buf);
+ update_box(d->conf, step_win, yslider + 4, xslider + 17, 3, 17, RAISED);
+
+ update_box(d->conf, slider_win, yslider + 7, xslider, 3, 34, RAISED);
+ wnoutrefresh(d->widget);
+
+ return (0);
+}
+
+/* API */
+int
+bsddialog_slider(struct bsddialog_conf *conf, const char *text, int rows,
+ int cols, const char *unit, unsigned long length, unsigned long *start,
+ unsigned long *end, bool resize, unsigned int nblocks,
+ unsigned long blocks[][2])
+{
+ struct sliderctl ctl;
+ bool loop, focusbuttons;
+ int retval, sel;
+ wint_t input;
+ unsigned long size;
+ WINDOW *start_win, *end_win, *size_win, *step_win, *slider_win;
+ struct dialog dialog;
+
+ CHECK_PTR(start);
+ CHECK_PTR(end);
+
+ ctl.spaces = blocks;
+ ctl.nspaces = nblocks;
+ ctl.length = length;
+ ctl.start = start;
+ ctl.end = end;
+ ctl.step = 1;
+
+ if (prepare_dialog(conf, text, rows, cols, &dialog) != 0)
+ return (BSDDIALOG_ERROR);
+ set_buttons(&dialog, true, OK_LABEL, CANCEL_LABEL);
+
+ if ((start_win = newwin(1, 1, 1, 1)) == NULL)
+ RETURN_ERROR("Cannot build WINDOW for start");
+ wbkgd(start_win, t.dialog.color);
+
+ if ((end_win = newwin(1, 1, 1, 1)) == NULL)
+ RETURN_ERROR("Cannot build WINDOW for end");
+ wbkgd(end_win, t.dialog.color);
+
+ if ((step_win = newwin(1, 1, 1, 1)) == NULL)
+ RETURN_ERROR("Cannot build WINDOW for step");
+ wbkgd(step_win, t.dialog.color);
+
+ if ((size_win = newwin(1, 1, 1, 1)) == NULL)
+ RETURN_ERROR("Cannot build WINDOW for size");
+ wbkgd(size_win, t.dialog.color);
+
+ if ((slider_win = newwin(1, 1, 1, 1)) == NULL)
+ RETURN_ERROR("Cannot build WINDOW for slider");
+ wbkgd(slider_win, t.dialog.color);
+
+ if (slider_draw(&dialog, false, start_win, end_win, size_win, step_win,
+ slider_win, unit) != 0)
+ return (BSDDIALOG_ERROR);
+
+ sel = NULLWIN;
+ loop = focusbuttons = true;
+ while (loop) {
+ size = *(ctl.end) - *(ctl.start) + 1;
+ drawsquare(conf, start_win, RAISED, sel == START_WIN, "%15lu", *start);
+ drawsquare(conf, end_win, RAISED, sel == END_WIN, "%15lu", *end);
+ drawsquare(conf, size_win, RAISED, 0, "%15lu", size);
+ drawsquare(conf, step_win, RAISED, sel == STEP_WIN, "%15d", ctl.step);
+ print_slider(conf, slider_win, blocks, nblocks, length, start,
+ end, sel == SLIDER_WIN);
+ doupdate();
+
+ if (get_wch(&input) == ERR)
+ continue;
+ switch (input) {
+ case KEY_ENTER:
+ case 10: /* Enter */
+ if (focusbuttons || conf->button.always_active) {
+ retval = BUTTONVALUE(dialog.bs);
+ loop = false;
+ }
+ break;
+ case 27: /* Esc */
+ if (conf->key.enable_esc) {
+ retval = BSDDIALOG_ESC;
+ loop = false;
+ }
+ break;
+ case '\t': /* TAB */
+ if (focusbuttons) {
+ dialog.bs.curr++;
+ if (dialog.bs.curr >= (int)dialog.bs.nbuttons) {
+ focusbuttons = false;
+ sel = START_WIN;
+ dialog.bs.curr =
+ conf->button.always_active ? 0 : -1;
+ }
+ } else {
+ sel++;
+ if ((sel + 1) > NWIN) {
+ focusbuttons = true;
+ sel = NULLWIN;
+ dialog.bs.curr = 0;
+ }
+ }
+ DRAW_BUTTONS(dialog);
+ break;
+ case KEY_CTRL('n'):
+ case KEY_RIGHT:
+ if (focusbuttons) {
+ dialog.bs.curr++;
+ if (dialog.bs.curr >= (int)dialog.bs.nbuttons) {
+ focusbuttons = false;
+ sel = START_WIN;
+ dialog.bs.curr =
+ conf->button.always_active ? 0 : -1;
+ }
+ } else if (sel == SLIDER_WIN) {
+ ctl.op = MOVERIGHT;
+ handlesliderctl(&ctl);
+ } else {
+ sel++;
+ }
+ DRAW_BUTTONS(dialog);
+ break;
+ case KEY_CTRL('p'):
+ case KEY_LEFT:
+ if (focusbuttons) {
+ dialog.bs.curr--;
+ if (dialog.bs.curr < 0) {
+ focusbuttons = false;
+ sel = SLIDER_WIN;
+ dialog.bs.curr =
+ conf->button.always_active ? 0 : -1;
+ }
+ } else if (sel == SLIDER_WIN) {
+ ctl.op = MOVELEFT;
+ handlesliderctl(&ctl);
+ } else if (sel == END_WIN) {
+ sel = START_WIN;
+ } else {
+ focusbuttons = true;
+ sel = NULLWIN;
+ dialog.bs.curr = 0;
+ }
+ DRAW_BUTTONS(dialog);
+ break;
+ case KEY_UP:
+ if (focusbuttons) {
+ sel = SLIDER_WIN;
+ focusbuttons = false;
+ dialog.bs.curr =
+ conf->button.always_active ? 0 : -1;
+ DRAW_BUTTONS(dialog);
+ } else if (sel == START_WIN) {
+ if (resize) {
+ ctl.op = INCREASELEFT;
+ } else {
+ ctl.op = MOVERIGHT;
+ }
+ handlesliderctl(&ctl);
+ } else if (sel == END_WIN) {
+ if (resize) {
+ ctl.op = INCREASERIGHT;
+ } else {
+ ctl.op = MOVERIGHT;
+ }
+ handlesliderctl(&ctl);
+ } else if (sel == STEP_WIN) {
+ ctl.op = INCREASESTEP;
+ handlesliderctl(&ctl);
+ }
+ break;
+ case KEY_DOWN:
+ if (focusbuttons) {
+ break;
+ } else if (sel == START_WIN) {
+ if (resize) {
+ ctl.op = DECREASELEFT;
+ } else {
+ ctl.op = MOVELEFT;
+ }
+ handlesliderctl(&ctl);
+ } else if (sel == END_WIN) {
+ if (resize) {
+ ctl.op = DECREASERIGHT;
+ } else {
+ ctl.op = MOVELEFT;
+ }
+ handlesliderctl(&ctl);
+ } else if (sel == STEP_WIN) {
+ ctl.op = DECREASESTEP;
+ handlesliderctl(&ctl);
+ }
+ break;
+ case '-':
+ if (focusbuttons) {
+ break;
+ } else if (sel == START_WIN) {
+ if (resize) {
+ ctl.op = DECREASELEFT;
+ } else {
+ ctl.op = MOVELEFT;
+ }
+ handlesliderctl(&ctl);
+ } else if (sel == END_WIN) {
+ if (resize) {
+ ctl.op = DECREASERIGHT;
+ } else {
+ ctl.op = MOVELEFT;
+ }
+ handlesliderctl(&ctl);
+ } else if (sel == STEP_WIN) {
+ ctl.op = DECREASESTEP;
+ handlesliderctl(&ctl);
+ }
+ break;
+ case '+':
+ if (focusbuttons) {
+ break;
+ } else if (sel == START_WIN) {
+ if (resize) {
+ ctl.op = INCREASELEFT;
+ } else {
+ ctl.op = MOVERIGHT;
+ }
+ handlesliderctl(&ctl);
+ } else if (sel == END_WIN) {
+ if (resize) {
+ ctl.op = INCREASERIGHT;
+ } else {
+ ctl.op = MOVERIGHT;
+ }
+ handlesliderctl(&ctl);
+ } else if (sel == STEP_WIN) {
+ ctl.op = INCREASESTEP;
+ handlesliderctl(&ctl);
+ }
+ break;
+ case KEY_HOME:
+ if (focusbuttons) {
+ break;
+ } else if (sel == SLIDER_WIN) {
+ ctl.op = MOVEFARLEFT;
+ handlesliderctl(&ctl);
+ }
+ break;
+ case KEY_END:
+ if (focusbuttons) {
+ break;
+ } else if (sel == SLIDER_WIN) {
+ ctl.op = MOVEFARRIGHT;
+ handlesliderctl(&ctl);
+ }
+ break;
+ case KEY_PPAGE:
+ if (focusbuttons) {
+ break;
+ } else if (sel == SLIDER_WIN) {
+ ctl.op = MOVEFASTLEFT;
+ handlesliderctl(&ctl);
+ }
+ break;
+ case KEY_NPAGE:
+ if (focusbuttons) {
+ break;
+ } else if (sel == SLIDER_WIN) {
+ ctl.op = MOVEFASTRIGHT;
+ handlesliderctl(&ctl);
+ }
+ break;
+ case KEY_F(1):
+ if (conf->key.f1_file == NULL &&
+ conf->key.f1_message == NULL)
+ break;
+ if (f1help_dialog(conf) != 0)
+ return (BSDDIALOG_ERROR);
+ if (slider_draw(&dialog, true, start_win, end_win, size_win,
+ step_win, slider_win, unit) != 0)
+ return (BSDDIALOG_ERROR);
+ break;
+ case KEY_CTRL('l'):
+ case KEY_RESIZE:
+ if (slider_draw(&dialog, true, start_win, end_win, size_win,
+ step_win, slider_win, unit) != 0)
+ return (BSDDIALOG_ERROR);
+ break;
+ default:
+ if (shortcut_buttons(input, &dialog.bs)) {
+ DRAW_BUTTONS(dialog);
+ doupdate();
+ retval = BUTTONVALUE(dialog.bs);
+ loop = false;
+ }
+ }
+ }
+
+ delwin(start_win);
+ delwin(end_win);
+ delwin(step_win);
+ delwin(slider_win);
+ end_dialog(&dialog);
+
+ return (retval);
+}
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