| 1 | /*
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| 2 | * util.c
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| 3 | *
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| 4 | * ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
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| 5 | * MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
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| 6 | *
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| 7 | * This program is free software; you can redistribute it and/or
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| 8 | * modify it under the terms of the GNU General Public License
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| 9 | * as published by the Free Software Foundation; either version 2
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| 10 | * of the License, or (at your option) any later version.
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| 11 | *
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| 12 | * This program is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with this program; if not, write to the Free Software
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| 19 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 20 | */
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| 21 |
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| 22 | #include "dialog.h"
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| 23 |
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| 24 |
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| 25 | /* use colors by default? */
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| 26 | bool use_colors = 1;
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| 27 |
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| 28 | const char *backtitle = NULL;
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| 29 |
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| 30 | const char *dialog_result;
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| 31 |
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| 32 | /*
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| 33 | * Attribute values, default is for mono display
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| 34 | */
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| 35 | chtype attributes[] =
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| 36 | {
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| 37 | A_NORMAL, /* screen_attr */
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| 38 | A_NORMAL, /* shadow_attr */
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| 39 | A_NORMAL, /* dialog_attr */
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| 40 | A_BOLD, /* title_attr */
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| 41 | A_NORMAL, /* border_attr */
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| 42 | A_REVERSE, /* button_active_attr */
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| 43 | A_DIM, /* button_inactive_attr */
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| 44 | A_REVERSE, /* button_key_active_attr */
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| 45 | A_BOLD, /* button_key_inactive_attr */
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| 46 | A_REVERSE, /* button_label_active_attr */
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| 47 | A_NORMAL, /* button_label_inactive_attr */
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| 48 | A_NORMAL, /* inputbox_attr */
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| 49 | A_NORMAL, /* inputbox_border_attr */
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| 50 | A_NORMAL, /* searchbox_attr */
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| 51 | A_BOLD, /* searchbox_title_attr */
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| 52 | A_NORMAL, /* searchbox_border_attr */
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| 53 | A_BOLD, /* position_indicator_attr */
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| 54 | A_NORMAL, /* menubox_attr */
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| 55 | A_NORMAL, /* menubox_border_attr */
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| 56 | A_NORMAL, /* item_attr */
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| 57 | A_REVERSE, /* item_selected_attr */
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| 58 | A_BOLD, /* tag_attr */
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| 59 | A_REVERSE, /* tag_selected_attr */
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| 60 | A_BOLD, /* tag_key_attr */
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| 61 | A_REVERSE, /* tag_key_selected_attr */
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| 62 | A_BOLD, /* check_attr */
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| 63 | A_REVERSE, /* check_selected_attr */
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| 64 | A_BOLD, /* uarrow_attr */
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| 65 | A_BOLD /* darrow_attr */
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| 66 | };
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| 67 |
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| 68 |
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| 69 | #include "colors.h"
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| 70 |
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| 71 | /*
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| 72 | * Table of color values
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| 73 | */
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| 74 | int color_table[][3] =
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| 75 | {
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| 76 | {SCREEN_FG, SCREEN_BG, SCREEN_HL},
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| 77 | {SHADOW_FG, SHADOW_BG, SHADOW_HL},
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| 78 | {DIALOG_FG, DIALOG_BG, DIALOG_HL},
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| 79 | {TITLE_FG, TITLE_BG, TITLE_HL},
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| 80 | {BORDER_FG, BORDER_BG, BORDER_HL},
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| 81 | {BUTTON_ACTIVE_FG, BUTTON_ACTIVE_BG, BUTTON_ACTIVE_HL},
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| 82 | {BUTTON_INACTIVE_FG, BUTTON_INACTIVE_BG, BUTTON_INACTIVE_HL},
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| 83 | {BUTTON_KEY_ACTIVE_FG, BUTTON_KEY_ACTIVE_BG, BUTTON_KEY_ACTIVE_HL},
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| 84 | {BUTTON_KEY_INACTIVE_FG, BUTTON_KEY_INACTIVE_BG, BUTTON_KEY_INACTIVE_HL},
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| 85 | {BUTTON_LABEL_ACTIVE_FG, BUTTON_LABEL_ACTIVE_BG, BUTTON_LABEL_ACTIVE_HL},
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| 86 | {BUTTON_LABEL_INACTIVE_FG, BUTTON_LABEL_INACTIVE_BG,
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| 87 | BUTTON_LABEL_INACTIVE_HL},
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| 88 | {INPUTBOX_FG, INPUTBOX_BG, INPUTBOX_HL},
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| 89 | {INPUTBOX_BORDER_FG, INPUTBOX_BORDER_BG, INPUTBOX_BORDER_HL},
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| 90 | {SEARCHBOX_FG, SEARCHBOX_BG, SEARCHBOX_HL},
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| 91 | {SEARCHBOX_TITLE_FG, SEARCHBOX_TITLE_BG, SEARCHBOX_TITLE_HL},
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| 92 | {SEARCHBOX_BORDER_FG, SEARCHBOX_BORDER_BG, SEARCHBOX_BORDER_HL},
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| 93 | {POSITION_INDICATOR_FG, POSITION_INDICATOR_BG, POSITION_INDICATOR_HL},
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| 94 | {MENUBOX_FG, MENUBOX_BG, MENUBOX_HL},
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| 95 | {MENUBOX_BORDER_FG, MENUBOX_BORDER_BG, MENUBOX_BORDER_HL},
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| 96 | {ITEM_FG, ITEM_BG, ITEM_HL},
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| 97 | {ITEM_SELECTED_FG, ITEM_SELECTED_BG, ITEM_SELECTED_HL},
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| 98 | {TAG_FG, TAG_BG, TAG_HL},
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| 99 | {TAG_SELECTED_FG, TAG_SELECTED_BG, TAG_SELECTED_HL},
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| 100 | {TAG_KEY_FG, TAG_KEY_BG, TAG_KEY_HL},
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| 101 | {TAG_KEY_SELECTED_FG, TAG_KEY_SELECTED_BG, TAG_KEY_SELECTED_HL},
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| 102 | {CHECK_FG, CHECK_BG, CHECK_HL},
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| 103 | {CHECK_SELECTED_FG, CHECK_SELECTED_BG, CHECK_SELECTED_HL},
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| 104 | {UARROW_FG, UARROW_BG, UARROW_HL},
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| 105 | {DARROW_FG, DARROW_BG, DARROW_HL},
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| 106 | }; /* color_table */
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| 107 |
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| 108 | /*
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| 109 | * Set window to attribute 'attr'
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| 110 | */
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| 111 | void
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| 112 | attr_clear (WINDOW * win, int height, int width, chtype attr)
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| 113 | {
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| 114 | int i, j;
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| 115 |
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| 116 | wattrset (win, attr);
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| 117 | for (i = 0; i < height; i++) {
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| 118 | wmove (win, i, 0);
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| 119 | for (j = 0; j < width; j++)
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| 120 | waddch (win, ' ');
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| 121 | }
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| 122 | touchwin (win);
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| 123 | }
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| 124 |
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| 125 | void dialog_clear (void)
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| 126 | {
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| 127 | attr_clear (stdscr, LINES, COLS, screen_attr);
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| 128 | /* Display background title if it exists ... - SLH */
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| 129 | if (backtitle != NULL) {
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| 130 | int i;
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| 131 |
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| 132 | wattrset (stdscr, screen_attr);
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| 133 | mvwaddstr (stdscr, 0, 1, (char *)backtitle);
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| 134 | wmove (stdscr, 1, 1);
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| 135 | for (i = 1; i < COLS - 1; i++)
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| 136 | waddch (stdscr, ACS_HLINE);
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| 137 | }
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| 138 | wnoutrefresh (stdscr);
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| 139 | }
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| 140 |
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| 141 | /*
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| 142 | * Do some initialization for dialog
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| 143 | */
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| 144 | void
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| 145 | init_dialog (void)
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| 146 | {
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| 147 | initscr (); /* Init curses */
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| 148 | keypad (stdscr, TRUE);
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| 149 | cbreak ();
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| 150 | noecho ();
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| 151 |
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| 152 |
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| 153 | if (use_colors) /* Set up colors */
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| 154 | color_setup ();
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| 155 |
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| 156 |
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| 157 | dialog_clear ();
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| 158 | }
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| 159 |
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| 160 | /*
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| 161 | * Setup for color display
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| 162 | */
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| 163 | void
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| 164 | color_setup (void)
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| 165 | {
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| 166 | int i;
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| 167 |
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| 168 | if (has_colors ()) { /* Terminal supports color? */
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| 169 | start_color ();
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| 170 |
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| 171 | /* Initialize color pairs */
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| 172 | for (i = 0; i < ATTRIBUTE_COUNT; i++)
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| 173 | init_pair (i + 1, color_table[i][0], color_table[i][1]);
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| 174 |
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| 175 | /* Setup color attributes */
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| 176 | for (i = 0; i < ATTRIBUTE_COUNT; i++)
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| 177 | attributes[i] = C_ATTR (color_table[i][2], i + 1);
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| 178 | }
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| 179 | }
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| 180 |
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| 181 | /*
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| 182 | * End using dialog functions.
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| 183 | */
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| 184 | void
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| 185 | end_dialog (void)
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| 186 | {
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| 187 | endwin ();
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| 188 | }
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| 189 |
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| 190 |
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| 191 | /*
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| 192 | * Print a string of text in a window, automatically wrap around to the
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| 193 | * next line if the string is too long to fit on one line. Newline
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| 194 | * characters '\n' are replaced by spaces. We start on a new line
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| 195 | * if there is no room for at least 4 nonblanks following a double-space.
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| 196 | */
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| 197 | void
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| 198 | print_autowrap (WINDOW * win, const char *prompt, int width, int y, int x)
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| 199 | {
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| 200 | int newl, cur_x, cur_y;
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| 201 | int i, prompt_len, room, wlen;
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| 202 | char tempstr[MAX_LEN + 1], *word, *sp, *sp2;
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| 203 |
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| 204 | strcpy (tempstr, prompt);
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| 205 |
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| 206 | prompt_len = strlen(tempstr);
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| 207 |
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| 208 | /*
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| 209 | * Remove newlines
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| 210 | */
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| 211 | for(i=0; i<prompt_len; i++) {
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| 212 | if(tempstr[i] == '\n') tempstr[i] = ' ';
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| 213 | }
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| 214 |
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| 215 | if (prompt_len <= width - x * 2) { /* If prompt is short */
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| 216 | wmove (win, y, (width - prompt_len) / 2);
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| 217 | waddstr (win, tempstr);
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| 218 | } else {
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| 219 | cur_x = x;
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| 220 | cur_y = y;
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| 221 | newl = 1;
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| 222 | word = tempstr;
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| 223 | while (word && *word) {
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| 224 | sp = index(word, ' ');
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| 225 | if (sp)
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| 226 | *sp++ = 0;
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| 227 |
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| 228 | /* Wrap to next line if either the word does not fit,
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| 229 | or it is the first word of a new sentence, and it is
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| 230 | short, and the next word does not fit. */
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| 231 | room = width - cur_x;
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| 232 | wlen = strlen(word);
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| 233 | if (wlen > room ||
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| 234 | (newl && wlen < 4 && sp && wlen+1+strlen(sp) > room
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| 235 | && (!(sp2 = index(sp, ' ')) || wlen+1+(sp2-sp) > room))) {
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| 236 | cur_y++;
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| 237 | cur_x = x;
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| 238 | }
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| 239 | wmove (win, cur_y, cur_x);
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| 240 | waddstr (win, word);
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| 241 | getyx (win, cur_y, cur_x);
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| 242 | cur_x++;
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| 243 | if (sp && *sp == ' ') {
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| 244 | cur_x++; /* double space */
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| 245 | while (*++sp == ' ');
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| 246 | newl = 1;
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| 247 | } else
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| 248 | newl = 0;
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| 249 | word = sp;
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| 250 | }
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| 251 | }
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| 252 | }
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| 253 |
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| 254 | /*
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| 255 | * Print a button
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| 256 | */
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| 257 | void
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| 258 | print_button (WINDOW * win, const char *label, int y, int x, int selected)
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| 259 | {
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| 260 | int i, temp;
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| 261 |
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| 262 | wmove (win, y, x);
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| 263 | wattrset (win, selected ? button_active_attr : button_inactive_attr);
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| 264 | waddstr (win, "<");
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| 265 | temp = strspn (label, " ");
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| 266 | label += temp;
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| 267 | wattrset (win, selected ? button_label_active_attr
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| 268 | : button_label_inactive_attr);
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| 269 | for (i = 0; i < temp; i++)
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| 270 | waddch (win, ' ');
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| 271 | wattrset (win, selected ? button_key_active_attr
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| 272 | : button_key_inactive_attr);
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| 273 | waddch (win, label[0]);
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| 274 | wattrset (win, selected ? button_label_active_attr
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| 275 | : button_label_inactive_attr);
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| 276 | waddstr (win, (char *)label + 1);
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| 277 | wattrset (win, selected ? button_active_attr : button_inactive_attr);
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| 278 | waddstr (win, ">");
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| 279 | wmove (win, y, x + temp + 1);
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| 280 | }
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| 281 |
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| 282 | /*
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| 283 | * Draw a rectangular box with line drawing characters
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| 284 | */
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| 285 | void
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| 286 | draw_box (WINDOW * win, int y, int x, int height, int width,
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| 287 | chtype box, chtype border)
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| 288 | {
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| 289 | int i, j;
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| 290 |
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| 291 | wattrset (win, 0);
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| 292 | for (i = 0; i < height; i++) {
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| 293 | wmove (win, y + i, x);
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| 294 | for (j = 0; j < width; j++)
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| 295 | if (!i && !j)
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| 296 | waddch (win, border | ACS_ULCORNER);
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| 297 | else if (i == height - 1 && !j)
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| 298 | waddch (win, border | ACS_LLCORNER);
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| 299 | else if (!i && j == width - 1)
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| 300 | waddch (win, box | ACS_URCORNER);
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| 301 | else if (i == height - 1 && j == width - 1)
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| 302 | waddch (win, box | ACS_LRCORNER);
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| 303 | else if (!i)
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| 304 | waddch (win, border | ACS_HLINE);
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| 305 | else if (i == height - 1)
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| 306 | waddch (win, box | ACS_HLINE);
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| 307 | else if (!j)
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| 308 | waddch (win, border | ACS_VLINE);
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| 309 | else if (j == width - 1)
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| 310 | waddch (win, box | ACS_VLINE);
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| 311 | else
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| 312 | waddch (win, box | ' ');
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| 313 | }
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| 314 | }
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| 315 |
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| 316 | /*
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| 317 | * Draw shadows along the right and bottom edge to give a more 3D look
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| 318 | * to the boxes
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| 319 | */
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| 320 | void
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| 321 | draw_shadow (WINDOW * win, int y, int x, int height, int width)
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| 322 | {
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| 323 | int i;
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| 324 |
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| 325 | if (has_colors ()) { /* Whether terminal supports color? */
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| 326 | wattrset (win, shadow_attr);
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| 327 | wmove (win, y + height, x + 2);
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| 328 | for (i = 0; i < width; i++)
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| 329 | waddch (win, winch (win) & A_CHARTEXT);
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| 330 | for (i = y + 1; i < y + height + 1; i++) {
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| 331 | wmove (win, i, x + width);
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| 332 | waddch (win, winch (win) & A_CHARTEXT);
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| 333 | waddch (win, winch (win) & A_CHARTEXT);
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| 334 | }
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| 335 | wnoutrefresh (win);
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| 336 | }
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| 337 | }
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| 338 |
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| 339 | /*
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| 340 | * Return the position of the first alphabetic character in a string.
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| 341 | */
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| 342 | int
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| 343 | first_alpha(const char *string, const char *exempt)
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| 344 | {
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| 345 | int i, in_paren=0, c;
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| 346 |
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| 347 | for (i = 0; i < strlen(string); i++) {
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| 348 | c = tolower(string[i]);
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| 349 |
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| 350 | if (strchr("<[(", c)) ++in_paren;
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| 351 | if (strchr(">])", c) && in_paren > 0) --in_paren;
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| 352 |
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| 353 | if ((! in_paren) && isalpha(c) &&
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| 354 | strchr(exempt, c) == 0)
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| 355 | return i;
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| 356 | }
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| 357 |
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| 358 | return 0;
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| 359 | }
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| 360 |
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| 361 | /*
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| 362 | * Get the first selected item in the dialog_list_item list.
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| 363 | */
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| 364 | struct dialog_list_item *
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| 365 | first_sel_item(int item_no, struct dialog_list_item ** items)
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| 366 | {
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| 367 | int i;
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| 368 |
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| 369 | for (i = 0; i < item_no; i++) {
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| 370 | if (items[i]->selected)
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| 371 | return items[i];
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| 372 | }
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| 373 |
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| 374 | return NULL;
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| 375 | }
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