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- /*
- * $XConsortium: LocBitmap.c,v 1.16 91/07/02 09:09:59 rws Exp $
- *
- * Copyright 1989 Massachusetts Institute of Technology
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation for any purpose and without fee is hereby granted, provided
- * that the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation, and that the name of M.I.T. not be used in advertising
- * or publicity pertaining to distribution of the software without specific,
- * written prior permission. M.I.T. makes no representations about the
- * suitability of this software for any purpose. It is provided "as is"
- * without express or implied warranty.
- *
- * M.I.T. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL M.I.T.
- * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- * Author: Jim Fulton, MIT X Consortium
- */
-
- #include <X11/Xlib.h>
- #include <X11/Xresource.h>
- #include <X11/Xutil.h>
- #include <X11/Xmu/CvtCache.h>
- #include <X11/Xmu/Drawing.h>
-
- #ifndef X_NOT_POSIX
- #ifdef _POSIX_SOURCE
- #include <limits.h>
- #else
- #define _POSIX_SOURCE
- #include <limits.h>
- #undef _POSIX_SOURCE
- #endif
- #endif /* X_NOT_POSIX */
- #ifndef PATH_MAX
- #include <sys/param.h>
- #ifdef MAXPATHLEN
- #define PATH_MAX MAXPATHLEN
- #else
- #define PATH_MAX 1024
- #endif
- #endif /* PATH_MAX */
-
- static char **split_path_string();
-
-
- /*
- * XmuLocateBitmapFile - read a bitmap file using the normal defaults
- */
-
- #if NeedFunctionPrototypes
- Pixmap XmuLocateBitmapFile (Screen *screen, _Xconst char *name, char *srcname,
- int srcnamelen, int *widthp, int *heightp,
- int *xhotp, int *yhotp)
- #else
- Pixmap XmuLocateBitmapFile (screen, name, srcname, srcnamelen,
- widthp, heightp, xhotp, yhotp)
- Screen *screen;
- char *name;
- char *srcname; /* RETURN */
- int srcnamelen;
- int *widthp, *heightp, *xhotp, *yhotp; /* RETURN */
- #endif
- {
- return XmuLocatePixmapFile (screen, name,
- (unsigned long) 1, (unsigned long) 0,
- (unsigned int) 1, srcname, srcnamelen,
- widthp, heightp, xhotp, yhotp);
- }
-
-
- /*
- * version that reads pixmap data as well as bitmap data
- */
- #if NeedFunctionPrototypes
- Pixmap XmuLocatePixmapFile (Screen *screen, _Xconst char *name,
- unsigned long fore, unsigned long back,
- unsigned int depth,
- char *srcname, int srcnamelen,
- int *widthp, int *heightp, int *xhotp, int *yhotp)
- #else
- Pixmap XmuLocatePixmapFile (screen, name, fore, back, depth,
- srcname, srcnamelen,
- widthp, heightp, xhotp, yhotp)
- Screen *screen;
- char *name;
- unsigned long fore, back;
- unsigned int depth;
- char *srcname; /* RETURN */
- int srcnamelen;
- int *widthp, *heightp, *xhotp, *yhotp; /* RETURN */
- #endif
- {
- Display *dpy = DisplayOfScreen (screen);
- Window root = RootWindowOfScreen (screen);
- Bool try_plain_name = True;
- XmuCvtCache *cache = _XmuCCLookupDisplay (dpy);
- char **file_paths = (char **) NULL;
- char filename[PATH_MAX];
- unsigned int width, height;
- int xhot, yhot;
- int i;
-
- /*
- * look in cache for bitmap path
- */
- if (cache) {
- if (!cache->string_to_bitmap.bitmapFilePath) {
- XrmName xrm_name[2];
- XrmClass xrm_class[2];
- XrmRepresentation rep_type;
- XrmValue value;
-
- xrm_name[0] = XrmPermStringToQuark ("bitmapFilePath");
- xrm_name[1] = NULLQUARK;
- xrm_class[0] = XrmPermStringToQuark ("BitmapFilePath");
- xrm_class[1] = NULLQUARK;
- if (!XrmGetDatabase(dpy)) {
- /* what a hack; need to initialize it */
- (void) XGetDefault (dpy, "", "");
- }
- if (XrmQGetResource (XrmGetDatabase(dpy), xrm_name, xrm_class,
- &rep_type, &value) &&
- rep_type == XrmPermStringToQuark("String")) {
- cache->string_to_bitmap.bitmapFilePath =
- split_path_string (value.addr);
- }
- }
- file_paths = cache->string_to_bitmap.bitmapFilePath;
- }
-
-
- /*
- * Search order:
- * 1. name if it begins with / or ./
- * 2. "each prefix in file_paths"/name
- * 3. BITMAPDIR/name
- * 4. name if didn't begin with / or .
- */
-
- #ifndef BITMAPDIR
- #define BITMAPDIR "/usr/include/X11/bitmaps"
- #endif
-
- for (i = 1; i <= 4; i++) {
- char *fn = filename;
- Pixmap pixmap;
- unsigned char *data;
-
- switch (i) {
- case 1:
- if (!(name[0] == '/' || (name[0] == '.') && name[1] == '/'))
- continue;
- fn = (char *) name;
- try_plain_name = False;
- break;
- case 2:
- if (file_paths && *file_paths) {
- sprintf (filename, "%s/%s", *file_paths, name);
- file_paths++;
- i--;
- break;
- }
- continue;
- case 3:
- sprintf (filename, "%s/%s", BITMAPDIR, name);
- break;
- case 4:
- if (!try_plain_name) continue;
- fn = (char *) name;
- break;
- }
-
- data = NULL;
- pixmap = None;
- if (XmuReadBitmapDataFromFile (fn, &width, &height, &data,
- &xhot, &yhot) == BitmapSuccess) {
- pixmap = XCreatePixmapFromBitmapData (dpy, root, (char *) data,
- width, height,
- fore, back, depth);
- XFree ((char *)data);
- }
-
- if (pixmap) {
- if (widthp) *widthp = (int)width;
- if (heightp) *heightp = (int)height;
- if (xhotp) *xhotp = xhot;
- if (yhotp) *yhotp = yhot;
- if (srcname && srcnamelen > 0) {
- strncpy (srcname, fn, srcnamelen - 1);
- srcname[srcnamelen - 1] = '\0';
- }
- return pixmap;
- }
- }
-
- return None;
- }
-
-
- /*
- * split_path_string - split a colon-separated list into its constituent
- * parts; to release, free list[0] and list.
- */
- static char **split_path_string (src)
- register char *src;
- {
- int nelems = 1;
- register char *dst;
- char **elemlist, **elem;
-
- /* count the number of elements */
- for (dst = src; *dst; dst++) if (*dst == ':') nelems++;
-
- /* get memory for everything */
- dst = (char *) malloc (dst - src + 1);
- if (!dst) return NULL;
- elemlist = (char **) calloc ((nelems + 1), sizeof (char *));
- if (!elemlist) {
- free (dst);
- return NULL;
- }
-
- /* copy to new list and walk up nulling colons and setting list pointers */
- strcpy (dst, src);
- for (elem = elemlist, src = dst; *src; src++) {
- if (*src == ':') {
- *elem++ = dst;
- *src = '\0';
- dst = src + 1;
- }
- }
- *elem = dst;
-
- return elemlist;
- }
-
-
- void _XmuStringToBitmapInitCache (c)
- register XmuCvtCache *c;
- {
- c->string_to_bitmap.bitmapFilePath = NULL;
- }
-
- void _XmuStringToBitmapFreeCache (c)
- register XmuCvtCache *c;
- {
- if (c->string_to_bitmap.bitmapFilePath) {
- if (c->string_to_bitmap.bitmapFilePath[0])
- free (c->string_to_bitmap.bitmapFilePath[0]);
- free ((char *) (c->string_to_bitmap.bitmapFilePath));
- }
- }
-