658 lines
14 KiB
C
658 lines
14 KiB
C
/*
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* Copyright © 2024 Thomas E. Dickey
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* Copyright © 2002 Keith Packard
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "xcursorint.h"
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#include <stdlib.h>
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#include <string.h>
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#ifndef ICONDIR
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#define ICONDIR "/usr/X11R6/lib/X11/icons"
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#endif
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#ifndef XCURSORPATH
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#define XCURSORPATH "~/.local/share/icons:~/.icons:/usr/share/icons:/usr/share/pixmaps:"ICONDIR
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#endif
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typedef struct XcursorInherit {
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char *line;
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const char *theme;
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} XcursorInherit;
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const char *
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XcursorLibraryPath (void)
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{
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static const char *path;
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if (!path)
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{
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path = getenv ("XCURSOR_PATH");
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if (!path)
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path = XCURSORPATH;
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traceOpts((T_OPTION(XCURSOR_PATH) ": %s\n", NonNull(path)));
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}
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return path;
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}
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static void
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_XcursorAddPathElt (char *path, const char *elt, int len)
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{
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size_t pathlen = strlen (path);
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/* append / if the path doesn't currently have one */
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if (path[0] == '\0' || path[pathlen - 1] != '/')
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{
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strcat (path, "/");
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pathlen++;
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}
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if (len == -1)
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len = (int) strlen (elt);
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/* strip leading slashes */
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while (len && elt[0] == '/')
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{
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elt++;
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len--;
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}
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strncpy (path + pathlen, elt, (size_t) len);
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path[pathlen + (size_t) len] = '\0';
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}
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static char *
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_XcursorBuildThemeDir (const char *dir, const char *theme)
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{
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const char *colon;
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const char *tcolon;
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char *full;
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char *home;
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int dirlen;
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int homelen;
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int themelen;
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int len;
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if (!dir || !theme)
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return NULL;
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colon = strchr (dir, ':');
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if (!colon)
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colon = dir + strlen (dir);
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dirlen = (int) (colon - dir);
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tcolon = strchr (theme, ':');
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if (!tcolon)
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tcolon = theme + strlen (theme);
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themelen = (int) (tcolon - theme);
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home = NULL;
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homelen = 0;
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if (*dir == '~')
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{
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home = getenv ("HOME");
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if (!home)
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return NULL;
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homelen = (int) strlen (home);
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dir++;
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dirlen--;
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}
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/*
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* add space for any needed directory separators, one per component,
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* and one for the trailing null
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*/
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len = 1 + homelen + 1 + dirlen + 1 + themelen + 1;
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full = malloc ((size_t)len);
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if (!full)
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return NULL;
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full[0] = '\0';
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if (home)
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_XcursorAddPathElt (full, home, -1);
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_XcursorAddPathElt (full, dir, dirlen);
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_XcursorAddPathElt (full, theme, themelen);
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return full;
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}
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static char *
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_XcursorBuildFullname (const char *dir, const char *subdir, const char *file)
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{
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char *full;
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if (!dir || !subdir || !file)
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return NULL;
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full = malloc (strlen (dir) + 1 + strlen (subdir) + 1 + strlen (file) + 1);
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if (!full)
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return NULL;
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full[0] = '\0';
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_XcursorAddPathElt (full, dir, -1);
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_XcursorAddPathElt (full, subdir, -1);
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_XcursorAddPathElt (full, file, -1);
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return full;
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}
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static const char *
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_XcursorNextPath (const char *path)
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{
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char *colon = strchr (path, ':');
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if (!colon)
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return NULL;
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return colon + 1;
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}
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/*
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* _XcursorThemeInherits, XcursorWhite, & XcursorSep are copied in
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* libxcb-cursor/cursor/load_cursor.c. Please update that copy to
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* include any changes made to the code for those here.
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*/
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#define XcursorWhite(c) ((c) == ' ' || (c) == '\t' || (c) == '\n')
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#define XcursorSep(c) ((c) == ';' || (c) == ',')
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static char *
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_XcursorThemeInherits (const char *full)
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{
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char line[8192];
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char *result = NULL;
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FILE *f;
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if (!full)
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return NULL;
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f = fopen (full, "r" FOPEN_CLOEXEC);
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if (f)
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{
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while (fgets (line, sizeof (line), f))
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{
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if (!strncmp (line, "Inherits", 8))
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{
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char *l = line + 8;
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while (*l == ' ') l++;
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if (*l != '=') continue;
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l++;
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while (*l == ' ') l++;
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result = malloc (strlen (l) + 1);
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if (result)
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{
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char *r = result;
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while (*l)
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{
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while (XcursorSep(*l) || XcursorWhite (*l)) l++;
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if (!*l)
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break;
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if (r != result)
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*r++ = ':';
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while (*l && !XcursorWhite(*l) &&
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!XcursorSep(*l))
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*r++ = *l++;
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}
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*r++ = '\0';
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}
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break;
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}
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}
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fclose (f);
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}
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return result;
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}
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#define XCURSOR_SCAN_CORE ((FILE *) 1)
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#define MAX_INHERITS_DEPTH 32
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static FILE *
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XcursorScanTheme (const char *theme, const char *name)
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{
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FILE *f = NULL;
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char *full;
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char *dir;
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const char *path;
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XcursorInherit inherits[MAX_INHERITS_DEPTH + 1];
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int d;
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if (!theme || !name)
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return NULL;
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/*
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* XCURSOR_CORE_THEME is a magic name; cursors from the core set
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* are never found in any directory. Instead, a magic value is
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* returned which truncates any search so that overlying functions
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* can switch to equivalent core cursors
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*/
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if (!strcmp (theme, XCURSOR_CORE_THEME) && XcursorLibraryShape (name) >= 0)
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return XCURSOR_SCAN_CORE;
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memset (inherits, 0, sizeof (inherits));
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d = 0;
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inherits[d].theme = theme;
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while (f == NULL && d >= 0 && inherits[d].theme != NULL)
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{
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/*
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* Scan this theme
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*/
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for (path = XcursorLibraryPath ();
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path && f == NULL;
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path = _XcursorNextPath (path))
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{
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dir = _XcursorBuildThemeDir (path, inherits[d].theme);
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if (dir)
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{
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full = _XcursorBuildFullname (dir, "cursors", name);
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if (full)
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{
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f = fopen (full, "r" FOPEN_CLOEXEC);
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free (full);
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}
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if (!f && inherits[d + 1].line == NULL)
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{
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if (d + 1 >= MAX_INHERITS_DEPTH)
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{
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free (dir);
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goto finish;
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}
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full = _XcursorBuildFullname (dir, "", "index.theme");
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if (full)
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{
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inherits[d + 1].line = _XcursorThemeInherits (full);
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inherits[d + 1].theme = inherits[d + 1].line;
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free (full);
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}
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}
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free (dir);
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}
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}
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d++;
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while (d > 0 && inherits[d].theme == NULL)
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{
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free (inherits[d].line);
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inherits[d].line = NULL;
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if (--d == 0)
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inherits[d].theme = NULL;
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else
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inherits[d].theme = _XcursorNextPath (inherits[d].theme);
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}
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/*
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* Detect and break self reference loop early on.
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*/
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if (inherits[d].theme != NULL && strcmp (inherits[d].theme, theme) == 0)
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break;
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}
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finish:
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for (d = 1; d <= MAX_INHERITS_DEPTH; d++)
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free (inherits[d].line);
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return f;
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}
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XcursorImage *
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XcursorLibraryLoadImage (const char *file, const char *theme, int size)
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{
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FILE *f = NULL;
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XcursorImage *image = NULL;
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enterFunc((T_CALLED(XcursorLibraryLoadImage) "(\"%s\",\"%s\", %d)\n",
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NonNull(file), NonNull(theme), size));
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if (!file)
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returnAddr(NULL);
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if (theme)
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f = XcursorScanTheme (theme, file);
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if (!f)
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f = XcursorScanTheme ("default", file);
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if (f != NULL && f != XCURSOR_SCAN_CORE)
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{
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image = XcursorFileLoadImage (f, size);
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fclose (f);
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}
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returnAddr(image);
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}
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static XcursorImages *
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_XcursorLibraryLoadImages (Display *dpy, const char *file)
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{
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int size = XcursorGetDefaultSize (dpy);
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char *theme = XcursorGetTheme (dpy);
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XcursorBool resized = XcursorGetResizable (dpy);
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FILE *f = NULL;
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XcursorImages *images = NULL;
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if (!file)
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return NULL;
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if (theme)
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f = XcursorScanTheme (theme, file);
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if (!f)
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f = XcursorScanTheme ("default", file);
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if (f != NULL && f != XCURSOR_SCAN_CORE)
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{
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images = _XcursorFileLoadImages (f, size, resized);
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if (images)
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XcursorImagesSetName (images, file);
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fclose (f);
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}
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return images;
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}
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XcursorImages *
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XcursorLibraryLoadImages (const char *file, const char *theme, int size)
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{
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FILE *f = NULL;
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XcursorImages *images = NULL;
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enterFunc((T_CALLED(XcursorLibraryLoadImages) "(\"%s\", \"%s\", %d)\n",
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NonNull(file), NonNull(theme), size));
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if (!file)
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returnAddr(NULL);
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if (theme)
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f = XcursorScanTheme (theme, file);
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if (!f)
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f = XcursorScanTheme ("default", file);
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if (f != NULL && f != XCURSOR_SCAN_CORE)
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{
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images = XcursorFileLoadImages (f, size);
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if (images)
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XcursorImagesSetName (images, file);
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fclose (f);
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}
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returnAddr(images);
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}
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Cursor
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XcursorLibraryLoadCursor (Display *dpy, const char *file)
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{
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XcursorImages *images;
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Cursor cursor = 0;
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enterFunc((T_CALLED(XcursorLibraryLoadCursor) "(%p, \"%s\")\n",
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(void*)dpy, NonNull(file)));
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if (!file)
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returnLong(cursor);
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images = _XcursorLibraryLoadImages (dpy, file);
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if (!images)
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{
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int id = XcursorLibraryShape (file);
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if (id >= 0)
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cursor = _XcursorCreateFontCursor (dpy, (unsigned) id);
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}
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else
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{
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cursor = XcursorImagesLoadCursor (dpy, images);
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XcursorImagesDestroy (images);
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#if defined HAVE_XFIXES && XFIXES_MAJOR >= 2
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XFixesSetCursorName (dpy, cursor, file);
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#endif
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}
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returnLong(cursor);
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}
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XcursorCursors *
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XcursorLibraryLoadCursors (Display *dpy, const char *file)
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{
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XcursorImages *images;
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XcursorCursors *cursors;
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enterFunc((T_CALLED(XcursorLibraryLoadCursors) "(%p, \"%s\")\n",
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(void*)dpy, NonNull(file)));
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if (!file)
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returnAddr(NULL);
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images = _XcursorLibraryLoadImages (dpy, file);
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if (!images)
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{
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int id = XcursorLibraryShape (file);
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if (id >= 0)
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{
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cursors = XcursorCursorsCreate (dpy, 1);
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if (cursors)
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{
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cursors->cursors[0] = _XcursorCreateFontCursor (dpy, (unsigned) id);
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if (cursors->cursors[0] == None)
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{
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XcursorCursorsDestroy (cursors);
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cursors = NULL;
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}
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else
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cursors->ncursor = 1;
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}
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}
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else
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cursors = NULL;
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}
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else
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{
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cursors = XcursorImagesLoadCursors (dpy, images);
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XcursorImagesDestroy (images);
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}
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returnAddr(cursors);
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}
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static const char _XcursorStandardNames[] =
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"X_cursor\0"
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"arrow\0"
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"based_arrow_down\0"
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"based_arrow_up\0"
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"boat\0"
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"bogosity\0"
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"bottom_left_corner\0"
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"bottom_right_corner\0"
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"bottom_side\0"
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"bottom_tee\0"
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"box_spiral\0"
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"center_ptr\0"
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"circle\0"
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"clock\0"
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"coffee_mug\0"
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"cross\0"
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"cross_reverse\0"
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"crosshair\0"
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"diamond_cross\0"
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"dot\0"
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"dotbox\0"
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"double_arrow\0"
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"draft_large\0"
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"draft_small\0"
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"draped_box\0"
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"exchange\0"
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"fleur\0"
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"gobbler\0"
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"gumby\0"
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"hand1\0"
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"hand2\0"
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"heart\0"
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"icon\0"
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"iron_cross\0"
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"left_ptr\0"
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"left_side\0"
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"left_tee\0"
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"leftbutton\0"
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"ll_angle\0"
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"lr_angle\0"
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"man\0"
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"middlebutton\0"
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"mouse\0"
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"pencil\0"
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"pirate\0"
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"plus\0"
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"question_arrow\0"
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"right_ptr\0"
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"right_side\0"
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"right_tee\0"
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"rightbutton\0"
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"rtl_logo\0"
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"sailboat\0"
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"sb_down_arrow\0"
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"sb_h_double_arrow\0"
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"sb_left_arrow\0"
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"sb_right_arrow\0"
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"sb_up_arrow\0"
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"sb_v_double_arrow\0"
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"shuttle\0"
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"sizing\0"
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"spider\0"
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"spraycan\0"
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"star\0"
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"target\0"
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"tcross\0"
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"top_left_arrow\0"
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"top_left_corner\0"
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"top_right_corner\0"
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"top_side\0"
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"top_tee\0"
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"trek\0"
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"ul_angle\0"
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"umbrella\0"
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"ur_angle\0"
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"watch\0"
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"xterm";
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static const unsigned short _XcursorStandardNameOffsets[] = {
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0, 9, 15, 32, 47, 52, 61, 80, 100, 112, 123, 134, 145, 152, 158,
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169, 175, 189, 199, 213, 217, 224, 237, 249, 261, 272, 281, 287,
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295, 301, 307, 313, 319, 324, 335, 344, 354, 363, 374, 383, 392,
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396, 409, 415, 422, 429, 434, 449, 459, 470, 480, 492, 501, 510,
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524, 542, 556, 571, 583, 601, 609, 616, 623, 632, 637, 644, 651,
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666, 682, 699, 708, 716, 721, 730, 739, 748, 754
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};
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#define NUM_STANDARD_NAMES (sizeof _XcursorStandardNameOffsets / sizeof _XcursorStandardNameOffsets[0])
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#define STANDARD_NAME(id) \
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_XcursorStandardNames + _XcursorStandardNameOffsets[id]
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XcursorImage *
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XcursorShapeLoadImage (unsigned int shape, const char *theme, int size)
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{
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unsigned int id = shape >> 1;
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XcursorImage *result = NULL;
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enterFunc((T_CALLED(XcursorShapeLoadImage) "(%u, \"%s\", %d)\n",
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shape, NonNull(theme), size));
|
|
|
|
if (id < NUM_STANDARD_NAMES)
|
|
result = XcursorLibraryLoadImage (STANDARD_NAME (id), theme, size);
|
|
|
|
returnAddr(result);
|
|
}
|
|
|
|
XcursorImages *
|
|
_XcursorShapeLoadImages (Display *dpy, unsigned int shape)
|
|
{
|
|
unsigned int id = shape >> 1;
|
|
XcursorImages *result = NULL;
|
|
|
|
enterFunc((T_CALLED(_XcursorShapeLoadImages) "(%p, %u)\n",
|
|
(void*)dpy, shape));
|
|
|
|
if (id < NUM_STANDARD_NAMES)
|
|
result = _XcursorLibraryLoadImages (dpy, STANDARD_NAME (id));
|
|
|
|
returnAddr(result);
|
|
}
|
|
|
|
XcursorImages *
|
|
XcursorShapeLoadImages (unsigned int shape, const char *theme, int size)
|
|
{
|
|
unsigned int id = shape >> 1;
|
|
XcursorImages *result = NULL;
|
|
|
|
enterFunc((T_CALLED(XcursorShapeLoadImages) "(%u, \"%s\", %d)\n",
|
|
shape, NonNull(theme), size));
|
|
|
|
if (id < NUM_STANDARD_NAMES)
|
|
result = XcursorLibraryLoadImages (STANDARD_NAME (id), theme, size);
|
|
|
|
returnAddr(result);
|
|
}
|
|
|
|
Cursor
|
|
XcursorShapeLoadCursor (Display *dpy, unsigned int shape)
|
|
{
|
|
unsigned int id = shape >> 1;
|
|
Cursor result = None;
|
|
|
|
enterFunc((T_CALLED(XcursorShapeLoadCursor) "(%p, %u)\n",
|
|
(void*)dpy, shape));
|
|
|
|
if (id < NUM_STANDARD_NAMES)
|
|
result = XcursorLibraryLoadCursor (dpy, STANDARD_NAME (id));
|
|
|
|
returnLong(result);
|
|
}
|
|
|
|
XcursorCursors *
|
|
XcursorShapeLoadCursors (Display *dpy, unsigned int shape)
|
|
{
|
|
unsigned int id = shape >> 1;
|
|
XcursorCursors *result = NULL;
|
|
|
|
enterFunc((T_CALLED(XcursorShapeLoadCursors) "(%p, %u)\n",
|
|
(void*)dpy, shape));
|
|
|
|
if (id < NUM_STANDARD_NAMES)
|
|
result = XcursorLibraryLoadCursors (dpy, STANDARD_NAME (id));
|
|
|
|
returnAddr(result);
|
|
}
|
|
|
|
int
|
|
XcursorLibraryShape (const char *library)
|
|
{
|
|
int low, high;
|
|
|
|
enterFunc((T_CALLED(XcursorLibraryShape) "(%s)\n", NonNull(library)));
|
|
|
|
low = 0;
|
|
high = NUM_STANDARD_NAMES - 1;
|
|
while (low < high - 1)
|
|
{
|
|
int mid = (low + high) >> 1;
|
|
int c = strcmp (library, STANDARD_NAME (mid));
|
|
if (c == 0)
|
|
returnCode(mid << 1);
|
|
if (c > 0)
|
|
low = mid;
|
|
else
|
|
high = mid;
|
|
}
|
|
while (low <= high)
|
|
{
|
|
if (!strcmp (library, STANDARD_NAME (low)))
|
|
return (low << 1);
|
|
low++;
|
|
}
|
|
returnCode(-1);
|
|
}
|