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- /* $XConsortium: StrToCurs.c,v 1.19 92/03/19 15:22:29 converse Exp $ */
-
- /***********************************************************
- Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts,
- and the Massachusetts Institute of Technology, Cambridge, Massachusetts.
-
- All Rights Reserved
-
- 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 names of Digital or MIT not be
- used in advertising or publicity pertaining to distribution of the
- software without specific, written prior permission.
-
- DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
- ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
- DIGITAL 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.
-
- ******************************************************************/
-
- #include <X11/Intrinsic.h>
- #include <X11/StringDefs.h>
- #include <X11/Xmu/Converters.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>
- #ifndef PATH_MAX
- #ifdef MAXPATHLEN
- #define PATH_MAX MAXPATHLEN
- #else
- #define PATH_MAX 1024
- #endif
- #endif
- #endif /* PATH_MAX */
-
- /* Kludge source to avoid encountering broken shared library linkers
- which insist on resolving references unused by the application,
- and broken object file formats that don't correctly distinguish
- references to procedures from references to data.
- */
- #if defined(SUNSHLIB) || defined(SVR4)
- #define XMU_KLUDGE
- #endif
-
- /*
- * XmuConvertStringToCursor:
- *
- * allows String to specify a standard cursor name (from cursorfont.h), a
- * font name and glyph index of the form "FONT fontname index [[font] index]",
- * or a bitmap file name (absolute, or relative to the global resource
- * bitmapFilePath, class BitmapFilePath). If the resource is not
- * defined, the default value is the build symbol BITMAPDIR.
- *
- * shares lots of code with XmuCvtStringToPixmap, but unfortunately
- * can't use it as the hotspot info is lost.
- *
- * To use, include the following in your ClassInitialize procedure:
-
- static XtConvertArgRec screenConvertArg[] = {
- {XtBaseOffset, (XtPointer) XtOffsetOf(WidgetRec, core.screen),
- sizeof(Screen *)}
- };
-
- XtAddConverter(XtRString, XtRCursor, XmuCvtStringToCursor,
- screenConvertArg, XtNumber(screenConvertArg));
- *
- */
-
- #define done(address, type) \
- { (*toVal).size = sizeof(type); (*toVal).addr = (XPointer) address; }
-
- #define FONTSPECIFIER "FONT "
-
- /*ARGSUSED*/
- void XmuCvtStringToCursor(args, num_args, fromVal, toVal)
- XrmValuePtr args;
- Cardinal *num_args;
- XrmValuePtr fromVal;
- XrmValuePtr toVal;
- {
- static Cursor cursor; /* static for cvt magic */
- char *name = (char *)fromVal->addr;
- Screen *screen;
- register int i;
- char maskname[PATH_MAX];
- Pixmap source, mask;
- /* XXX - make fg/bg resources */
- static XColor bgColor = {0, 0xffff, 0xffff, 0xffff};
- static XColor fgColor = {0, 0, 0, 0};
- int xhot, yhot;
- int len;
-
-
- if (*num_args != 1)
- XtErrorMsg("wrongParameters","cvtStringToCursor","XtToolkitError",
- "String to cursor conversion needs screen argument",
- (String *)NULL, (Cardinal *)NULL);
-
- screen = *((Screen **) args[0].addr);
-
- if (0 == strncmp(FONTSPECIFIER, name, strlen(FONTSPECIFIER))) {
- char source_name[PATH_MAX], mask_name[PATH_MAX];
- int source_char, mask_char, fields;
- Font source_font, mask_font;
- XrmValue fromString, toFont;
- XrmValue cvtArg;
- Boolean success;
- Display *dpy = DisplayOfScreen(screen);
- #ifdef XMU_KLUDGE
- Cardinal num;
- #endif
-
- fields = sscanf(name, "FONT %s %d %s %d",
- source_name, &source_char,
- mask_name, &mask_char);
- if (fields < 2) {
- XtStringConversionWarning(name, XtRCursor);
- return;
- }
-
- fromString.addr = source_name;
- fromString.size = strlen(source_name) + 1;
- toFont.addr = (XPointer) &source_font;
- toFont.size = sizeof(Font);
- cvtArg.addr = (XPointer) &dpy;
- cvtArg.size = sizeof(Display *);
- /* XXX using display of screen argument as message display */
- #ifdef XMU_KLUDGE
- /* XXX Sacrifice caching */
- num = 1;
- success = XtCvtStringToFont(dpy, &cvtArg, &num, &fromString, &toFont,
- NULL);
- #else
- success = XtCallConverter(dpy, XtCvtStringToFont, &cvtArg,
- (Cardinal)1, &fromString, &toFont, NULL);
- #endif
- if (!success) {
- XtStringConversionWarning(name, XtRCursor);
- return;
- }
-
- switch (fields) {
- case 2: /* defaulted mask font & char */
- mask_font = source_font;
- mask_char = source_char;
- break;
-
- case 3: /* defaulted mask font */
- mask_font = source_font;
- mask_char = atoi(mask_name);
- break;
-
- case 4: /* specified mask font & char */
- fromString.addr = mask_name;
- fromString.size = strlen(mask_name) + 1;
- toFont.addr = (XPointer) &mask_font;
- toFont.size = sizeof(Font);
- /* XXX using display of screen argument as message display */
- #ifdef XMU_KLUDGE
- /* XXX Sacrifice caching */
- num = 1;
- success = XtCvtStringToFont(dpy, &cvtArg, &num, &fromString,
- &toFont, NULL);
- #else
- success = XtCallConverter(dpy, XtCvtStringToFont, &cvtArg,
- (Cardinal)1, &fromString, &toFont, NULL);
- #endif
- if (!success) {
- XtStringConversionWarning(name, XtRCursor);
- return;
- }
- }
-
- cursor = XCreateGlyphCursor( DisplayOfScreen(screen), source_font,
- mask_font, source_char, mask_char,
- &fgColor, &bgColor );
- done(&cursor, Cursor);
- return;
- }
-
- i = XmuCursorNameToIndex (name);
- if (i != -1) {
- cursor = XCreateFontCursor (DisplayOfScreen(screen), i);
- done(&cursor, Cursor);
- return;
- }
-
- if ((source = XmuLocateBitmapFile (screen, name,
- maskname, (sizeof maskname) - 4,
- NULL, NULL, &xhot, &yhot)) == None) {
- XtStringConversionWarning (name, XtRCursor);
- }
- len = strlen (maskname);
- for (i = 0; i < 2; i++) {
- strcpy (maskname + len, i == 0 ? "Mask" : "msk");
- if ((mask = XmuLocateBitmapFile (screen, maskname, NULL, 0,
- NULL, NULL, NULL, NULL)) != None)
- break;
- }
-
- cursor = XCreatePixmapCursor( DisplayOfScreen(screen), source, mask,
- &fgColor, &bgColor, xhot, yhot );
- XFreePixmap( DisplayOfScreen(screen), source );
- if (mask != None) XFreePixmap( DisplayOfScreen(screen), mask );
-
- done(&cursor, Cursor);
- }
-
- #define new_done(type, value) \
- { \
- if (toVal->addr != NULL) { \
- if (toVal->size < sizeof(type)) { \
- toVal->size = sizeof(type); \
- return False; \
- } \
- *(type*)(toVal->addr) = (value); \
- } \
- else { \
- static type static_val; \
- static_val = (value); \
- toVal->addr = (XPointer)&static_val; \
- } \
- toVal->size = sizeof(type); \
- return True; \
- }
-
- /* Function Name: XmuCvtStringToColorCursor
- * Description: Converts a string into a colored cursor.
- * Arguments: dpy
- * args - an argument list (see below).
- * num_args - number of elements in the argument list.
- * fromVal - value to convert from.
- * toVal - value to convert to.
- * data
- * Returns: True or False
- */
-
- /*ARGSUSED*/
- Boolean
- XmuCvtStringToColorCursor(dpy, args, num_args, fromVal, toVal, converter_data)
- Display *dpy;
- XrmValuePtr args;
- Cardinal *num_args;
- XrmValuePtr fromVal;
- XrmValuePtr toVal;
- XtPointer *converter_data; /* unused */
- {
- Cursor cursor;
- Pixel fg, bg;
- Colormap c_map;
- XColor colors[2];
- Cardinal number;
- XrmValue ret_val;
-
- if (*num_args != 4) {
- XtAppWarningMsg(XtDisplayToApplicationContext(dpy),
- "wrongParameters","cvtStringToColorCursor","XmuError",
- "String to color cursor conversion needs four arguments",
- (String *)NULL, (Cardinal *)NULL);
- return False;
- }
-
- fg = *((Pixel *) args[1].addr);
- bg = *((Pixel *) args[2].addr);
- c_map = *((Colormap *) args[3].addr);
-
- number = 1;
- XmuCvtStringToCursor(args, &number, fromVal, &ret_val);
-
- cursor = *((Cursor *) ret_val.addr);
-
- if (cursor == None)
- new_done(Cursor, cursor);
-
- colors[0].pixel = fg;
- colors[1].pixel = bg;
-
- XQueryColors (dpy, c_map, colors, 2);
- XRecolorCursor(dpy, cursor, colors, colors + 1);
- new_done(Cursor, cursor);
- }
-
-
-
-