diff options
Diffstat (limited to 'lib/textbox.c')
| -rw-r--r-- | lib/textbox.c | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/lib/textbox.c b/lib/textbox.c new file mode 100644 index 000000000000..2874aa5832b9 --- /dev/null +++ b/lib/textbox.c @@ -0,0 +1,280 @@ +/*- + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2021 Alfonso Sabato Siciliano + * + * 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 <sys/param.h> + +#include <string.h> + +#ifdef PORTNCURSES +#include <ncurses/curses.h> +#else +#include <curses.h> +#endif + +#include "bsddialog.h" +#include "lib_util.h" +#include "bsddialog_theme.h" + +/* "Text": tailbox - tailboxbg - textbox */ + +#define BUTTON_TEXTBOX "HELP" + +extern struct bsddialog_theme t; + +enum textmode { TAILMODE, TAILBGMODE, TEXTMODE}; + +static void +textbox_autosize(struct bsddialog_conf conf, int rows, int cols, int *h, int *w, + int hpad, int wpad) +{ + + if (cols == BSDDIALOG_AUTOSIZE) { + *w = VBORDERS; + /* buttons size */ + *w += strlen(BUTTON_TEXTBOX) + 2 /* text delims*/; + /* text size */ + *w = MAX(*w, wpad + VBORDERS); + /* avoid terminal overflow */ + *w = MIN(*w, widget_max_width(conf)-1); /* again -1, fix util.c */ + } + + if (rows == BSDDIALOG_AUTOSIZE) { + *h = hpad + 4; /* HBORDERS + button border */ + /* avoid terminal overflow */ + *h = MIN(*h, widget_max_height(conf)); + } +} + +static int textbox_checksize(int rows, int cols, int hpad, int wpad) +{ + int mincols; + + mincols = VBORDERS + strlen(BUTTON_TEXTBOX) + 2 /* text delims */; + + if (cols < mincols) + RETURN_ERROR("Few cols for the textbox"); + + if (rows < 4 /* HBORDERS + button*/ + (hpad > 0 ? 1 : 0)) + RETURN_ERROR("Few rows for the textbox"); + + return 0; +} + +static int +do_textbox(enum textmode mode, struct bsddialog_conf conf, char* path, int rows, int cols) +{ + WINDOW *widget, *pad, *shadow; + int i, input, y, x, h, w, hpad, wpad, ypad, xpad, ys, ye, xs, xe, printrows; + char buf[BUFSIZ], *exitbutt; + FILE *fp; + bool loop; + int output; + + if (mode == TAILMODE || mode == TAILBGMODE) { + bsddialog_msgbox(conf, "Tailbox and Tailboxbg unimplemented", rows, cols); + RETURN_ERROR("Tailbox and Tailboxbg unimplemented"); + } + + if ((fp = fopen(path, "r")) == NULL) + RETURN_ERROR("Cannot open file"); + /*if (mode == TAILMODE) { + fseek (fp, 0, SEEK_END); + i = nlines = 0; + while (i < hpad) { + line = ; + } + for (i=hpad-1; i--; i>=0) { + } + }*/ + hpad = 1; + wpad = 1; + pad = newpad(hpad, wpad); + wbkgd(pad, t.widgetcolor); + i = 0; + while(fgets(buf, BUFSIZ, fp) != NULL) { + if ((int) strlen(buf) > wpad) { + wpad = strlen(buf); + wresize(pad, hpad, wpad); + } + if (i > hpad-1) { + hpad++; + wresize(pad, hpad, wpad); + } + mvwaddstr(pad, i, 0, buf); + i++; + } + fclose(fp); + + if (set_widget_size(conf, rows, cols, &h, &w) != 0) + return BSDDIALOG_ERROR; + textbox_autosize(conf, rows, cols, &h, &w, hpad, wpad); + if (textbox_checksize(h, w, hpad, wpad) != 0) + return BSDDIALOG_ERROR; + if (set_widget_position(conf, &y, &x, h, w) != 0) + return BSDDIALOG_ERROR; + + if (new_widget_withtextpad(conf, &shadow, &widget, y, x, h, w, RAISED, + NULL, NULL, NULL, true) != 0) + return BSDDIALOG_ERROR; + + exitbutt = conf.button.exit_label == NULL ? BUTTON_TEXTBOX : conf.button.exit_label; + draw_button(widget, h-2, (w-2)/2 - strlen(exitbutt)/2, strlen(exitbutt)+2, + exitbutt, true, true); + + wrefresh(widget); + + ys = y + 1; + xs = x + 1; + ye = ys + h - 5; + xe = xs + w - 3; + ypad = xpad = 0; + printrows = h-4; + loop = true; + while(loop) { + prefresh(pad, ypad, xpad, ys, xs, ye, xe); + input = getch(); + switch(input) { + case KEY_ENTER: + case 10: /* Enter */ + output = BSDDIALOG_YESOK; + loop = false; + break; + case 27: /* Esc */ + output = BSDDIALOG_ESC; + loop = false; + break; + case KEY_HOME: + ypad = 0; + break; + case KEY_END: + ypad = hpad - printrows; + ypad = ypad < 0 ? 0 : ypad; + break; + case KEY_PPAGE: + ypad -= printrows; + ypad = ypad < 0 ? 0 : ypad; + break; + case KEY_NPAGE: + ypad += printrows; + ypad = ypad + printrows > hpad ? hpad - printrows : ypad; + break; + case '0': + xpad = 0; + case KEY_LEFT: + case 'h': + xpad = xpad > 0 ? xpad - 1 : 0; + break; + case KEY_RIGHT: + case 'l': + xpad = (xpad + w-2) < wpad-1 ? xpad + 1 : xpad; + break; + case KEY_UP: + case 'k': + ypad = ypad > 0 ? ypad - 1 : 0; + break; + case KEY_DOWN: + case'j': + ypad = ypad + printrows <= hpad -1 ? ypad + 1 : ypad; + break; + case KEY_F(1): + if (conf.hfile == NULL) + break; + if (f1help(conf) != 0) + return BSDDIALOG_ERROR; + /* No break! the terminal size can change */ + case KEY_RESIZE: + hide_widget(y, x, h, w,conf.shadow); + + /* + * Unnecessary, but, when the columns decrease the + * following "refresh" seem not work + */ + refresh(); + + if (set_widget_size(conf, rows, cols, &h, &w) != 0) + return BSDDIALOG_ERROR; + textbox_autosize(conf, rows, cols, &h, &w, hpad, wpad); + if (textbox_checksize(h, w, hpad, wpad) != 0) + return BSDDIALOG_ERROR; + if (set_widget_position(conf, &y, &x, h, w) != 0) + return BSDDIALOG_ERROR; + + wclear(shadow); + mvwin(shadow, y + t.shadowrows, x + t.shadowcols); + wresize(shadow, h, w); + + wclear(widget); + mvwin(widget, y, x); + wresize(widget, h, w); + + ys = y + 1; + xs = x + 1; + ye = ys + h - 5; + xe = xs + w - 3; + ypad = xpad = 0; + printrows = h - 4; + + if(update_widget_withtextpad(conf, shadow, widget, h, w, + RAISED, NULL, NULL, NULL, true) != 0) + return BSDDIALOG_ERROR; + + draw_button(widget, h-2, (w-2)/2 - strlen(exitbutt)/2, + strlen(exitbutt)+2, exitbutt, true, true); + + wrefresh(widget); /* for button */ + + /* Important to fix grey lines expanding screen */ + refresh(); + break; + } + } + + end_widget_withtextpad(conf, widget, h, w, pad, shadow); + + return output; +} + +int bsddialog_tailbox(struct bsddialog_conf conf, char* text, int rows, int cols) +{ + + return (do_textbox(TAILMODE, conf, text, rows, cols)); +} + +int bsddialog_tailboxbg(struct bsddialog_conf conf, char* text, int rows, int cols) +{ + + return (do_textbox(TAILBGMODE, conf, text, rows, cols)); +} + + +int bsddialog_textbox(struct bsddialog_conf conf, char* text, int rows, int cols) +{ + + return (do_textbox(TEXTMODE, conf, text, rows, cols)); +} + |