contrib/bsddialog/lib/theme.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause
   3  *
   4  * Copyright (c) 2021-2023 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 <curses.h>
  29
  30 #include "bsddialog.h"
  31 #include "bsddialog_theme.h"
  32 #include "lib_util.h"
  33
  34 #define GET_COLOR(bg, fg) (COLOR_PAIR(bg * 8 + fg +1))
  35 #define WHITE GET_COLOR(COLOR_WHITE, COLOR_BLACK)
  36 #define BLACK GET_COLOR(COLOR_WHITE, COLOR_BLACK) | A_REVERSE
  37 #define NFLAGS 6
  38
  39 struct bsddialog_theme t;
  40 bool hastermcolors;
  41
  42 struct flag_converter {
  43         unsigned int public;
  44         unsigned int private;
  45 };
  46
  47 static struct flag_converter flagconv[NFLAGS] = {
  48         {BSDDIALOG_BLINK,      A_BLINK},
  49         {BSDDIALOG_BOLD,       A_BOLD},
  50         {BSDDIALOG_HALFBRIGHT, A_DIM},
  51         {BSDDIALOG_HIGHLIGHT,  A_STANDOUT},
  52         {BSDDIALOG_REVERSE,    A_REVERSE},
  53         {BSDDIALOG_UNDERLINE,  A_UNDERLINE}
  54 };
  55
  56 static struct bsddialog_theme blackwhite = {
  57         .screen.color = WHITE,
  58
  59         .shadow.color = GET_COLOR(COLOR_BLACK, COLOR_BLACK),
  60         .shadow.y     = 1,
  61         .shadow.x     = 2,
  62
  63         .dialog.delimtitle       = true,
  64         .dialog.titlecolor       = WHITE,
  65         .dialog.lineraisecolor   = WHITE,
  66         .dialog.linelowercolor   = WHITE,
  67         .dialog.color            = WHITE,
  68         .dialog.bottomtitlecolor = WHITE,
  69         .dialog.arrowcolor       = WHITE,
  70
  71         .menu.f_prefixcolor   = WHITE,
  72         .menu.prefixcolor     = WHITE,
  73         .menu.f_selectorcolor = BLACK,
  74         .menu.selectorcolor   = WHITE,
  75         .menu.f_desccolor     = BLACK,
  76         .menu.desccolor       = WHITE,
  77         .menu.f_namecolor     = BLACK,
  78         .menu.namecolor       = WHITE,
  79         .menu.f_shortcutcolor = BLACK | A_UNDERLINE,
  80         .menu.shortcutcolor   = WHITE | A_UNDERLINE,
  81         .menu.bottomdesccolor = WHITE,
  82         .menu.sepnamecolor    = WHITE,
  83         .menu.sepdesccolor    = WHITE,
  84
  85         .form.f_fieldcolor    = BLACK,
  86         .form.fieldcolor      = WHITE,
  87         .form.readonlycolor   = WHITE,
  88         .form.bottomdesccolor = WHITE,
  89
  90         .bar.f_color = BLACK,
  91         .bar.color   = WHITE,
  92
  93         .button.minmargin       = 1,
  94         .button.maxmargin       = 5,
  95         .button.leftdelim       = '[',
  96         .button.rightdelim      = ']',
  97         .button.f_delimcolor    = WHITE,
  98         .button.delimcolor      = WHITE,
  99         .button.f_color         = BLACK,
 100         .button.color           = WHITE,
 101         .button.f_shortcutcolor = BLACK | A_UNDERLINE | A_BOLD,
 102         .button.shortcutcolor   = WHITE | A_UNDERLINE | A_BOLD
 103 };
 104
 105 static struct bsddialog_theme flat = {
 106         .screen.color = GET_COLOR(COLOR_CYAN, COLOR_BLUE) | A_BOLD,
 107
 108         .shadow.color = GET_COLOR(COLOR_BLACK, COLOR_BLACK),
 109         .shadow.y     = 1,
 110         .shadow.x     = 2,
 111
 112         .dialog.delimtitle       = true,
 113         .dialog.titlecolor       = GET_COLOR(COLOR_BLUE,  COLOR_WHITE) | A_BOLD,
 114         .dialog.lineraisecolor   = GET_COLOR(COLOR_BLACK, COLOR_WHITE),
 115         .dialog.linelowercolor   = GET_COLOR(COLOR_BLACK, COLOR_WHITE),
 116         .dialog.color            = GET_COLOR(COLOR_BLACK, COLOR_WHITE),
 117         .dialog.bottomtitlecolor = GET_COLOR(COLOR_BLACK, COLOR_WHITE) | A_BOLD,
 118         .dialog.arrowcolor       = GET_COLOR(COLOR_BLUE,  COLOR_WHITE),
 119
 120         .menu.f_prefixcolor   = GET_COLOR(COLOR_BLACK, COLOR_WHITE),
 121         .menu.prefixcolor     = GET_COLOR(COLOR_BLACK, COLOR_WHITE),
 122         .menu.f_selectorcolor = GET_COLOR(COLOR_WHITE, COLOR_BLUE),
 123         .menu.selectorcolor   = GET_COLOR(COLOR_BLACK, COLOR_WHITE),
 124         .menu.f_desccolor     = GET_COLOR(COLOR_WHITE, COLOR_BLUE),
 125         .menu.desccolor       = GET_COLOR(COLOR_BLACK, COLOR_WHITE),
 126         .menu.f_namecolor     = GET_COLOR(COLOR_WHITE, COLOR_BLUE),
 127         .menu.namecolor       = GET_COLOR(COLOR_BLUE,  COLOR_WHITE),
 128         .menu.f_shortcutcolor = GET_COLOR(COLOR_RED,   COLOR_BLUE),
 129         .menu.shortcutcolor   = GET_COLOR(COLOR_RED,   COLOR_WHITE),
 130         .menu.bottomdesccolor = GET_COLOR(COLOR_WHITE, COLOR_BLUE),
 131         .menu.sepnamecolor    = GET_COLOR(COLOR_RED,   COLOR_WHITE),
 132         .menu.sepdesccolor    = GET_COLOR(COLOR_RED,   COLOR_WHITE),
 133
 134         .form.f_fieldcolor    = GET_COLOR(COLOR_WHITE, COLOR_BLUE) | A_BOLD,
 135         .form.fieldcolor      = GET_COLOR(COLOR_WHITE, COLOR_CYAN) | A_BOLD,
 136         .form.readonlycolor   = GET_COLOR(COLOR_CYAN,  COLOR_WHITE)| A_BOLD,
 137         .form.bottomdesccolor = GET_COLOR(COLOR_WHITE, COLOR_BLUE),
 138
 139         .bar.f_color = GET_COLOR(COLOR_WHITE, COLOR_BLUE)  | A_BOLD,
 140         .bar.color   = GET_COLOR(COLOR_BLUE,  COLOR_WHITE) | A_BOLD,
 141
 142         .button.minmargin       = 1,
 143         .button.maxmargin       = 5,
 144         .button.leftdelim       = '[',
 145         .button.rightdelim      = ']',
 146         .button.f_delimcolor    = GET_COLOR(COLOR_WHITE,  COLOR_BLUE)  | A_BOLD,
 147         .button.delimcolor      = GET_COLOR(COLOR_BLACK,  COLOR_WHITE),
 148         .button.f_color         = GET_COLOR(COLOR_YELLOW, COLOR_BLUE)  | A_BOLD,
 149         .button.color           = GET_COLOR(COLOR_BLACK,  COLOR_WHITE),
 150         .button.f_shortcutcolor = GET_COLOR(COLOR_WHITE,  COLOR_BLUE)  | A_BOLD,
 151         .button.shortcutcolor   = GET_COLOR(COLOR_RED,    COLOR_WHITE) | A_BOLD
 152 };
 153
 154 static void
 155 set_theme(struct bsddialog_theme *dst, struct bsddialog_theme *src)
 156 {
 157         dst->screen.color = src->screen.color;
 158
 159         dst->shadow.color = src->shadow.color;
 160         dst->shadow.y     = src->shadow.y;
 161         dst->shadow.x     = src->shadow.x;
 162
 163         dst->dialog.delimtitle       = src->dialog.delimtitle;
 164         dst->dialog.titlecolor       = src->dialog.titlecolor;
 165         dst->dialog.lineraisecolor   = src->dialog.lineraisecolor;
 166         dst->dialog.linelowercolor   = src->dialog.linelowercolor;
 167         dst->dialog.color            = src->dialog.color;
 168         dst->dialog.bottomtitlecolor = src->dialog.bottomtitlecolor;
 169         dst->dialog.arrowcolor       = src->dialog.arrowcolor;
 170
 171         dst->menu.f_prefixcolor   = src->menu.f_prefixcolor;
 172         dst->menu.prefixcolor     = src->menu.prefixcolor;
 173         dst->menu.f_selectorcolor = src->menu.f_selectorcolor;
 174         dst->menu.selectorcolor   = src->menu.selectorcolor;
 175         dst->menu.f_desccolor     = src->menu.f_desccolor;
 176         dst->menu.desccolor       = src->menu.desccolor;
 177         dst->menu.f_namecolor     = src->menu.f_namecolor;
 178         dst->menu.namecolor       = src->menu.namecolor;
 179         dst->menu.f_shortcutcolor = src->menu.f_shortcutcolor;
 180         dst->menu.shortcutcolor   = src->menu.shortcutcolor;
 181         dst->menu.bottomdesccolor = src->menu.bottomdesccolor;
 182         dst->menu.sepnamecolor    = src->menu.sepnamecolor;
 183         dst->menu.sepdesccolor    = src->menu.sepdesccolor;
 184
 185         dst->form.f_fieldcolor    = src->form.f_fieldcolor;
 186         dst->form.fieldcolor      = src->form.fieldcolor;
 187         dst->form.readonlycolor   = src->form.readonlycolor;
 188         dst->form.bottomdesccolor = src->form.bottomdesccolor;
 189
 190         dst->bar.f_color = src->bar.f_color;
 191         dst->bar.color   = src->bar.color;
 192
 193         dst->button.minmargin       = src->button.minmargin;
 194         dst->button.maxmargin       = src->button.maxmargin;
 195         dst->button.leftdelim       = src->button.leftdelim;
 196         dst->button.rightdelim      = src->button.rightdelim;
 197         dst->button.f_delimcolor    = src->button.f_delimcolor;
 198         dst->button.delimcolor      = src->button.delimcolor;
 199         dst->button.f_color         = src->button.f_color;
 200         dst->button.color           = src->button.color;
 201         dst->button.f_shortcutcolor = src->button.f_shortcutcolor;
 202         dst->button.shortcutcolor   = src->button.shortcutcolor;
 203
 204         bkgd(dst->screen.color);
 205 }
 206
 207 /* API */
 208 int bsddialog_get_theme(struct bsddialog_theme *theme)
 209 {
 210         CHECK_PTR(theme);
 211         set_theme(theme, &t);
 212
 213         return (BSDDIALOG_OK);
 214 }
 215
 216 int bsddialog_set_theme(struct bsddialog_theme *theme)
 217 {
 218         CHECK_PTR(theme);
 219         set_theme(&t, theme);
 220         refresh();
 221
 222         return (BSDDIALOG_OK);
 223 }
 224
 225 int bsddialog_set_default_theme(enum bsddialog_default_theme newtheme)
 226 {
 227         if (newtheme == BSDDIALOG_THEME_3D) {
 228                 set_theme(&t, &flat);
 229                 t.dialog.lineraisecolor   =
 230                     GET_COLOR(COLOR_WHITE, COLOR_WHITE) | A_BOLD;
 231                 t.dialog.delimtitle       = false;
 232                 t.dialog.bottomtitlecolor = t.dialog.bottomtitlecolor | A_BOLD;
 233         } else if (newtheme == BSDDIALOG_THEME_BLACKWHITE) {
 234                 set_theme(&t, &blackwhite);
 235         } else if (newtheme == BSDDIALOG_THEME_FLAT) {
 236                 set_theme(&t, &flat);
 237         } else {
 238                 RETURN_FMTERROR("Unknown default theme (%d), "
 239                     "to use enum bsddialog_default_theme",
 240                     newtheme);
 241         }
 242         refresh();
 243
 244         return (BSDDIALOG_OK);
 245 }
 246
 247 int
 248 bsddialog_color(enum bsddialog_color foreground,
 249     enum bsddialog_color background, unsigned int flags)
 250 {
 251         unsigned int i, f;
 252
 253         f = 0;
 254         for (i=0; i < NFLAGS; i++)
 255                 if (flags & flagconv[i].public)
 256                         f |= flagconv[i].private;
 257
 258         return (GET_COLOR(foreground, background) | f);
 259 }
 260
 261 int
 262 bsddialog_color_attrs(int color, enum bsddialog_color *foreground,
 263     enum bsddialog_color *background, unsigned int *flags)
 264 {
 265         short fg, bg;
 266         unsigned int i, f;
 267
 268         if (flags != NULL) {
 269                 f = 0;
 270                 for (i=0; i < NFLAGS; i++)
 271                         if (color & flagconv[i].private)
 272                                 f |= flagconv[i].public;
 273                 *flags = f;
 274         }
 275         if (pair_content(PAIR_NUMBER(color), &fg, &bg) != OK)
 276                 RETURN_ERROR("Cannot get color attributes");
 277         if (foreground != NULL)
 278                 *foreground = fg;
 279         if (background != NULL)
 280                 *background = bg;
 281
 282         return (BSDDIALOG_OK);
 283 }
 284
 285 bool bsddialog_hascolors(void)
 286 {
 287         return (hastermcolors);
 288 }