1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2021-2022 Alfonso Sabato Siciliano 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/param.h> 29 30 #include <curses.h> 31 #include <string.h> 32 33 #include "bsddialog.h" 34 #include "bsddialog_theme.h" 35 #include "lib_util.h" 36 37 extern struct bsddialog_theme t; 38 39 static void 40 textbox_autosize(struct bsddialog_conf *conf, int rows, int cols, int *h, 41 int *w, int hpad, int wpad, struct buttons bs) 42 { 43 if (cols == BSDDIALOG_AUTOSIZE) 44 *w = widget_min_width(conf, 0, wpad, &bs); 45 46 if (rows == BSDDIALOG_AUTOSIZE) 47 *h = widget_min_height(conf, 0, hpad, true); 48 } 49 50 static int 51 textbox_checksize(int rows, int cols, int hpad, struct buttons bs) 52 { 53 int mincols; 54 55 mincols = VBORDERS + bs.sizebutton; 56 57 if (cols < mincols) 58 RETURN_ERROR("Few cols for the textbox"); 59 60 if (rows < 4 /* HBORDERS + button*/ + (hpad > 0 ? 1 : 0)) 61 RETURN_ERROR("Few rows for the textbox"); 62 63 return (0); 64 } 65 66 /* API */ 67 int 68 bsddialog_textbox(struct bsddialog_conf *conf, const char* file, int rows, 69 int cols) 70 { 71 bool loop; 72 int i, output, input; 73 int y, x, h, w, hpad, wpad, ypad, xpad, ys, ye, xs, xe, printrows; 74 char buf[BUFSIZ]; 75 FILE *fp; 76 struct buttons bs; 77 WINDOW *shadow, *widget, *pad; 78 79 if ((fp = fopen(file, "r")) == NULL) 80 RETURN_ERROR("Cannot open file"); 81 82 hpad = 1; 83 wpad = 1; 84 pad = newpad(hpad, wpad); 85 wbkgd(pad, t.dialog.color); 86 i = 0; 87 while (fgets(buf, BUFSIZ, fp) != NULL) { 88 if ((int) strlen(buf) > wpad) { 89 wpad = strlen(buf); 90 wresize(pad, hpad, wpad); 91 } 92 if (i > hpad-1) { 93 hpad++; 94 wresize(pad, hpad, wpad); 95 } 96 mvwaddstr(pad, i, 0, buf); 97 i++; 98 } 99 fclose(fp); 100 101 bs.nbuttons = 1; 102 bs.label[0] = "EXIT"; 103 if (conf->button.ok_label != NULL) 104 bs.label[0] = conf->button.ok_label; 105 bs.value[0] = BSDDIALOG_OK; 106 bs.curr = 0; 107 bs.sizebutton = strlen(bs.label[0]) + 2; 108 109 if (set_widget_size(conf, rows, cols, &h, &w) != 0) 110 return (BSDDIALOG_ERROR); 111 textbox_autosize(conf, rows, cols, &h, &w, hpad, wpad, bs); 112 if (textbox_checksize(h, w, hpad, bs) != 0) 113 return (BSDDIALOG_ERROR); 114 if (set_widget_position(conf, &y, &x, h, w) != 0) 115 return (BSDDIALOG_ERROR); 116 117 if (new_dialog(conf, &shadow, &widget, y, x, h, w, NULL, NULL, &bs, 118 true) != 0) 119 return (BSDDIALOG_ERROR); 120 121 ys = y + 1; 122 xs = x + 1; 123 ye = ys + h - 5; 124 xe = xs + w - 3; 125 ypad = xpad = 0; 126 printrows = h-4; 127 loop = true; 128 while (loop) { 129 wnoutrefresh(widget); 130 pnoutrefresh(pad, ypad, xpad, ys, xs, ye, xe); 131 doupdate(); 132 input = getch(); 133 switch(input) { 134 case KEY_ENTER: 135 case 10: /* Enter */ 136 output = BSDDIALOG_OK; 137 loop = false; 138 break; 139 case 27: /* Esc */ 140 if (conf->key.enable_esc) { 141 output = BSDDIALOG_ESC; 142 loop = false; 143 } 144 break; 145 case KEY_HOME: 146 ypad = 0; 147 break; 148 case KEY_END: 149 ypad = hpad - printrows; 150 ypad = ypad < 0 ? 0 : ypad; 151 break; 152 case KEY_PPAGE: 153 ypad -= printrows; 154 ypad = ypad < 0 ? 0 : ypad; 155 break; 156 case KEY_NPAGE: 157 ypad += printrows; 158 if (ypad + printrows > hpad) 159 ypad = hpad - printrows; 160 break; 161 case '0': 162 xpad = 0; 163 case KEY_LEFT: 164 case 'h': 165 xpad = xpad > 0 ? xpad - 1 : 0; 166 break; 167 case KEY_RIGHT: 168 case 'l': 169 xpad = (xpad + w-2) < wpad-1 ? xpad + 1 : xpad; 170 break; 171 case KEY_UP: 172 case 'k': 173 ypad = ypad > 0 ? ypad - 1 : 0; 174 break; 175 case KEY_DOWN: 176 case'j': 177 ypad = ypad + printrows <= hpad -1 ? ypad + 1 : ypad; 178 break; 179 case KEY_F(1): 180 if (conf->f1_file == NULL && conf->f1_message == NULL) 181 break; 182 if (f1help(conf) != 0) 183 return (BSDDIALOG_ERROR); 184 /* No break, screen size can change */ 185 case KEY_RESIZE: 186 /* Important for decreasing screen */ 187 hide_widget(y, x, h, w, conf->shadow); 188 refresh(); 189 190 if (set_widget_size(conf, rows, cols, &h, &w) != 0) 191 return (BSDDIALOG_ERROR); 192 textbox_autosize(conf, rows, cols, &h, &w, hpad, wpad, 193 bs); 194 if (textbox_checksize(h, w, hpad, bs) != 0) 195 return (BSDDIALOG_ERROR); 196 if (set_widget_position(conf, &y, &x, h, w) != 0) 197 return (BSDDIALOG_ERROR); 198 199 ys = y + 1; 200 xs = x + 1; 201 ye = ys + h - 5; 202 xe = xs + w - 3; 203 ypad = xpad = 0; 204 printrows = h - 4; 205 206 if (update_dialog(conf, shadow, widget, y, x, h, w, 207 NULL, NULL, &bs, true) != 0) 208 return (BSDDIALOG_ERROR); 209 210 /* Important to fix grey lines expanding screen */ 211 refresh(); 212 break; 213 default: 214 if (shortcut_buttons(input, &bs)) { 215 output = bs.value[bs.curr]; 216 loop = false; 217 } 218 } 219 } 220 221 end_dialog(conf, shadow, widget, pad); 222 223 return (output); 224 }