| 1 | /* xscreensaver, Copyright (c) 1992-2014 Jamie Zawinski <jwz@jwz.org> |
| 2 | * |
| 3 | * Permission to use, copy, modify, distribute, and sell this software and its |
| 4 | * documentation for any purpose is hereby granted without fee, provided that |
| 5 | * the above copyright notice appear in all copies and that both that |
| 6 | * copyright notice and this permission notice appear in supporting |
| 7 | * documentation. No representations are made about the suitability of this |
| 8 | * software for any purpose. It is provided "as is" without express or |
| 9 | * implied warranty. |
| 10 | */ |
| 11 | |
| 12 | #include "utils.h" |
| 13 | #include "resources.h" |
| 14 | |
| 15 | extern char *progname; |
| 16 | |
| 17 | |
| 18 | #if !defined(HAVE_COCOA) && !defined(HAVE_ANDROID) |
| 19 | |
| 20 | #include <X11/Xresource.h> |
| 21 | |
| 22 | /* These are the Xlib/Xrm versions of these functions. |
| 23 | The Cocoa versions are on OSX/XScreenSaverView.m. |
| 24 | */ |
| 25 | |
| 26 | extern char *progclass; |
| 27 | extern XrmDatabase XtDatabase (Display *); |
| 28 | |
| 29 | static unsigned int get_time_resource (Display *dpy, |
| 30 | char *res_name, char *res_class, |
| 31 | Bool sec_p); |
| 32 | |
| 33 | #ifndef isupper |
| 34 | # define isupper(c) ((c) >= 'A' && (c) <= 'Z') |
| 35 | #endif |
| 36 | #ifndef _tolower |
| 37 | # define _tolower(c) ((c) - 'A' + 'a') |
| 38 | #endif |
| 39 | |
| 40 | char * |
| 41 | get_string_resource (Display *dpy, char *res_name, char *res_class) |
| 42 | { |
| 43 | XrmValue value; |
| 44 | char *type; |
| 45 | char full_name [1024], full_class [1024]; |
| 46 | strcpy (full_name, progname); |
| 47 | strcat (full_name, "."); |
| 48 | strcat (full_name, res_name); |
| 49 | strcpy (full_class, progclass); |
| 50 | strcat (full_class, "."); |
| 51 | strcat (full_class, res_class); |
| 52 | if (XrmGetResource (XtDatabase (dpy), full_name, full_class, &type, &value)) |
| 53 | { |
| 54 | char *str = (char *) malloc (value.size + 1); |
| 55 | strncpy (str, (char *) value.addr, value.size); |
| 56 | str [value.size] = 0; |
| 57 | return str; |
| 58 | } |
| 59 | return 0; |
| 60 | } |
| 61 | |
| 62 | Bool |
| 63 | get_boolean_resource (Display *dpy, char *res_name, char *res_class) |
| 64 | { |
| 65 | char *tmp, buf [100]; |
| 66 | char *s = get_string_resource (dpy, res_name, res_class); |
| 67 | char *os = s; |
| 68 | if (! s) return 0; |
| 69 | for (tmp = buf; *s; s++) |
| 70 | *tmp++ = isupper (*s) ? _tolower (*s) : *s; |
| 71 | *tmp = 0; |
| 72 | free (os); |
| 73 | |
| 74 | while (*buf && |
| 75 | (buf[strlen(buf)-1] == ' ' || |
| 76 | buf[strlen(buf)-1] == '\t')) |
| 77 | buf[strlen(buf)-1] = 0; |
| 78 | |
| 79 | if (!strcmp (buf, "on") || !strcmp (buf, "true") || !strcmp (buf, "yes")) |
| 80 | return 1; |
| 81 | if (!strcmp (buf,"off") || !strcmp (buf, "false") || !strcmp (buf,"no")) |
| 82 | return 0; |
| 83 | fprintf (stderr, "%s: %s must be boolean, not %s.\n", |
| 84 | progname, res_name, buf); |
| 85 | return 0; |
| 86 | } |
| 87 | |
| 88 | int |
| 89 | get_integer_resource (Display *dpy, char *res_name, char *res_class) |
| 90 | { |
| 91 | int val; |
| 92 | char c, *s = get_string_resource (dpy, res_name, res_class); |
| 93 | char *ss = s; |
| 94 | if (!s) return 0; |
| 95 | |
| 96 | while (*ss && *ss <= ' ') ss++; /* skip whitespace */ |
| 97 | |
| 98 | if (ss[0] == '0' && (ss[1] == 'x' || ss[1] == 'X')) /* 0x: parse as hex */ |
| 99 | { |
| 100 | if (1 == sscanf (ss+2, "%x %c", (unsigned int *) &val, &c)) |
| 101 | { |
| 102 | free (s); |
| 103 | return val; |
| 104 | } |
| 105 | } |
| 106 | else /* else parse as dec */ |
| 107 | { |
| 108 | if (1 == sscanf (ss, "%d %c", &val, &c)) |
| 109 | { |
| 110 | free (s); |
| 111 | return val; |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | fprintf (stderr, "%s: %s must be an integer, not %s.\n", |
| 116 | progname, res_name, s); |
| 117 | free (s); |
| 118 | return 0; |
| 119 | } |
| 120 | |
| 121 | double |
| 122 | get_float_resource (Display *dpy, char *res_name, char *res_class) |
| 123 | { |
| 124 | double val; |
| 125 | char c, *s = get_string_resource (dpy, res_name, res_class); |
| 126 | if (! s) return 0.0; |
| 127 | if (1 == sscanf (s, " %lf %c", &val, &c)) |
| 128 | { |
| 129 | free (s); |
| 130 | return val; |
| 131 | } |
| 132 | fprintf (stderr, "%s: %s must be a float, not %s.\n", |
| 133 | progname, res_name, s); |
| 134 | free (s); |
| 135 | return 0.0; |
| 136 | } |
| 137 | |
| 138 | #endif /* !HAVE_COCOA && !HAVE_ANDROID */ |
| 139 | |
| 140 | |
| 141 | /* These functions are the same with Xlib, Cocoa and Android: |
| 142 | */ |
| 143 | |
| 144 | |
| 145 | unsigned int |
| 146 | get_pixel_resource (Display *dpy, Colormap cmap, |
| 147 | char *res_name, char *res_class) |
| 148 | { |
| 149 | XColor color; |
| 150 | char *s = get_string_resource (dpy, res_name, res_class); |
| 151 | char *s2; |
| 152 | Bool ok = True; |
| 153 | if (!s) goto DEFAULT; |
| 154 | |
| 155 | for (s2 = s + strlen(s) - 1; s2 > s; s2--) |
| 156 | if (*s2 == ' ' || *s2 == '\t') |
| 157 | *s2 = 0; |
| 158 | else |
| 159 | break; |
| 160 | |
| 161 | if (! XParseColor (dpy, cmap, s, &color)) |
| 162 | { |
| 163 | fprintf (stderr, "%s: can't parse color %s", progname, s); |
| 164 | ok = False; |
| 165 | goto DEFAULT; |
| 166 | } |
| 167 | if (! XAllocColor (dpy, cmap, &color)) |
| 168 | { |
| 169 | fprintf (stderr, "%s: couldn't allocate color %s", progname, s); |
| 170 | ok = False; |
| 171 | goto DEFAULT; |
| 172 | } |
| 173 | free (s); |
| 174 | return (unsigned int) color.pixel; |
| 175 | DEFAULT: |
| 176 | if (s) free (s); |
| 177 | |
| 178 | { |
| 179 | Bool black_p = (strlen(res_class) >= 10 && |
| 180 | !strcasecmp ("Background", |
| 181 | res_class + strlen(res_class) - 10)); |
| 182 | if (!ok) |
| 183 | fprintf (stderr, ": using %s.\n", (black_p ? "black" : "white")); |
| 184 | color.flags = DoRed|DoGreen|DoBlue; |
| 185 | color.red = color.green = color.blue = (black_p ? 0 : 0xFFFF); |
| 186 | if (XAllocColor (dpy, cmap, &color)) |
| 187 | return (unsigned int) color.pixel; |
| 188 | else |
| 189 | { |
| 190 | fprintf (stderr, "%s: couldn't allocate %s either!\n", progname, |
| 191 | (black_p ? "black" : "white")); |
| 192 | /* We can't use BlackPixel/WhitePixel here, because we don't know |
| 193 | what screen we're allocating on (only an issue when running inside |
| 194 | the xscreensaver daemon: for hacks, DefaultScreen is fine.) |
| 195 | */ |
| 196 | return 0; |
| 197 | } |
| 198 | } |
| 199 | } |
| 200 | |
| 201 | |
| 202 | int |
| 203 | parse_time (const char *string, Bool seconds_default_p, Bool silent_p) |
| 204 | { |
| 205 | unsigned int h, m, s; |
| 206 | char c; |
| 207 | if (3 == sscanf (string, " %u : %2u : %2u %c", &h, &m, &s, &c)) |
| 208 | ; |
| 209 | else if (2 == sscanf (string, " : %2u : %2u %c", &m, &s, &c) || |
| 210 | 2 == sscanf (string, " %u : %2u %c", &m, &s, &c)) |
| 211 | h = 0; |
| 212 | else if (1 == sscanf (string, " : %2u %c", &s, &c)) |
| 213 | h = m = 0; |
| 214 | else if (1 == sscanf (string, " %u %c", |
| 215 | (seconds_default_p ? &s : &m), &c)) |
| 216 | { |
| 217 | h = 0; |
| 218 | if (seconds_default_p) m = 0; |
| 219 | else s = 0; |
| 220 | } |
| 221 | else |
| 222 | { |
| 223 | if (! silent_p) |
| 224 | fprintf (stderr, "%s: invalid time interval specification \"%s\".\n", |
| 225 | progname, string); |
| 226 | return -1; |
| 227 | } |
| 228 | if (s >= 60 && (h != 0 || m != 0)) |
| 229 | { |
| 230 | if (! silent_p) |
| 231 | fprintf (stderr, "%s: seconds > 59 in \"%s\".\n", progname, string); |
| 232 | return -1; |
| 233 | } |
| 234 | if (m >= 60 && h > 0) |
| 235 | { |
| 236 | if (! silent_p) |
| 237 | fprintf (stderr, "%s: minutes > 59 in \"%s\".\n", progname, string); |
| 238 | return -1; |
| 239 | } |
| 240 | return ((h * 60 * 60) + (m * 60) + s); |
| 241 | } |
| 242 | |
| 243 | static unsigned int |
| 244 | get_time_resource (Display *dpy, char *res_name, char *res_class, Bool sec_p) |
| 245 | { |
| 246 | int val; |
| 247 | char *s = get_string_resource (dpy, res_name, res_class); |
| 248 | if (!s) return 0; |
| 249 | val = parse_time (s, sec_p, False); |
| 250 | free (s); |
| 251 | return (val < 0 ? 0 : val); |
| 252 | } |
| 253 | |
| 254 | unsigned int |
| 255 | get_seconds_resource (Display *dpy, char *res_name, char *res_class) |
| 256 | { |
| 257 | return get_time_resource (dpy, res_name, res_class, True); |
| 258 | } |
| 259 | |
| 260 | unsigned int |
| 261 | get_minutes_resource (Display *dpy, char *res_name, char *res_class) |
| 262 | { |
| 263 | return get_time_resource (dpy, res_name, res_class, False); |
| 264 | } |
| 265 | |
| 266 | |
| 267 | /* A utility function for event-handler functions: |
| 268 | Returns True if the event is a simple click, Space, Tab, etc. |
| 269 | Returns False otherwise. |
| 270 | The idea here is that most hacks interpret to clicks or basic |
| 271 | keypresses as "change it up". |
| 272 | |
| 273 | This isn't really the right file for this, but whatever. |
| 274 | */ |
| 275 | Bool |
| 276 | screenhack_event_helper (Display *dpy, Window window, XEvent *event) |
| 277 | { |
| 278 | if (event->xany.type == KeyPress) |
| 279 | { |
| 280 | KeySym keysym; |
| 281 | char c = 0; |
| 282 | XLookupString (&event->xkey, &c, 1, &keysym, 0); |
| 283 | if (c == ' ' || c == '\t' || c == '\r' || c == '\n' || |
| 284 | keysym == XK_Left || keysym == XK_Right || |
| 285 | keysym == XK_Up || keysym == XK_Down || |
| 286 | keysym == XK_Prior || keysym == XK_Next) |
| 287 | return True; |
| 288 | } |
| 289 | else if (event->xany.type == ButtonPress) |
| 290 | { |
| 291 | if (event->xbutton.button == 1) |
| 292 | return True; |
| 293 | } |
| 294 | |
| 295 | return False; |
| 296 | } |