diff options
Diffstat (limited to 'nx-X11/programs/Xserver/hw/dmx/dmxfont.c')
| -rw-r--r-- | nx-X11/programs/Xserver/hw/dmx/dmxfont.c | 559 |
1 files changed, 0 insertions, 559 deletions
diff --git a/nx-X11/programs/Xserver/hw/dmx/dmxfont.c b/nx-X11/programs/Xserver/hw/dmx/dmxfont.c deleted file mode 100644 index 3dba61de4..000000000 --- a/nx-X11/programs/Xserver/hw/dmx/dmxfont.c +++ /dev/null @@ -1,559 +0,0 @@ -/* $XFree86$ */ -/* - * Copyright 2001-2004 Red Hat Inc., Durham, North Carolina. - * - * All Rights Reserved. - * - * Permission is hereby granted, free of charge, to any person obtaining - * a copy of this software and associated documentation files (the - * "Software"), to deal in the Software without restriction, including - * without limitation on the rights to use, copy, modify, merge, - * publish, distribute, sublicense, and/or sell copies of the Software, - * and to permit persons to whom the Software is furnished to do so, - * subject to the following conditions: - * - * The above copyright notice and this permission notice (including the - * next paragraph) shall be included in all copies or substantial - * portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - * NON-INFRINGEMENT. IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS - * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN - * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -/* - * Authors: - * Kevin E. Martin <kem@redhat.com> - * - */ - -/** \file - * This file provides support for fonts. */ - -#ifdef HAVE_DMX_CONFIG_H -#include <dmx-config.h> -#endif - -#define DMX_FONTPATH_DEBUG 0 - -#include "dmx.h" -#include "dmxsync.h" -#include "dmxfont.h" -#include "dmxlog.h" - -#include <X11/fonts/fontstruct.h> -#include "dixfont.h" -#include "dixstruct.h" - -static int (*dmxSaveProcVector[256])(ClientPtr); -static int dmxFontLastError; - -static int dmxFontErrorHandler(Display *dpy, XErrorEvent *ev) -{ - dmxFontLastError = ev->error_code; - - return 0; -} - -static char **dmxGetFontPath(int *npaths) -{ - char **fp; - unsigned char *c, *paths; - char *newfp; - int len, l, i; - - paths = GetFontPath(npaths, &len); - - newfp = xalloc(*npaths + len); - c = (unsigned char *)newfp; - fp = xalloc(*npaths * sizeof(*fp)); - - memmove(newfp, paths+1, *npaths + len - 1); - l = *paths; - for (i = 0; i < *npaths; i++) { - fp[i] = (char *)c; - c += l; - l = *c; - *c++ = '\0'; - } - -#if DMX_FONTPATH_DEBUG - for (i = 0; i < *npaths; i++) - dmxLog(dmxDebug, "FontPath[%d] = %s\n", i, fp[i]); -#endif - - return fp; -} - -static void dmxFreeFontPath(char **fp) -{ - xfree(fp[0]); - xfree(fp); -} - -static Bool dmxCheckFontPathElement(DMXScreenInfo *dmxScreen, char *fp) -{ - int (*oldErrorHandler)(Display *, XErrorEvent *); - - if (!dmxScreen->beDisplay) - return TRUE; - - dmxFontLastError = 0; - oldErrorHandler = XSetErrorHandler(dmxFontErrorHandler); - XSetFontPath(dmxScreen->beDisplay, &fp, 1); - dmxSync(dmxScreen, TRUE); /* Must complete before removing handler */ - XSetErrorHandler(oldErrorHandler); - - return (dmxFontLastError == 0); -} - -static int dmxSetFontPath(DMXScreenInfo *dmxScreen) -{ - int (*oldErrorHandler)(Display *, XErrorEvent *); - char **fp; - int result = Success; - int npaths; - - if (!dmxScreen->beDisplay) - return result; - - fp = dmxGetFontPath(&npaths); - if (!fp) return BadAlloc; - - dmxFontLastError = 0; - oldErrorHandler = XSetErrorHandler(dmxFontErrorHandler); - XSetFontPath(dmxScreen->beDisplay, fp, npaths); - dmxSync(dmxScreen, TRUE); /* Must complete before removing handler */ - XSetErrorHandler(oldErrorHandler); - - if (dmxFontLastError) { - result = dmxFontLastError; - /* We could set *error here to the offending path, but it is - * ignored, so we don't bother figuring out which path is bad. - * If we do add this support in the future, we'll need to add - * error to the function's argument list. - */ - } - - dmxFreeFontPath(fp); - - return result; -} - -static int dmxCheckFontPath(DMXScreenInfo *dmxScreen, int *error) -{ - char **oldFontPath; - int nOldPaths; - int result = Success; - - if (!dmxScreen->beDisplay) - return result; - - /* Save old font path */ - oldFontPath = XGetFontPath(dmxScreen->beDisplay, &nOldPaths); - - result = dmxSetFontPath(dmxScreen); - - /* Restore old font path */ - XSetFontPath(dmxScreen->beDisplay, oldFontPath, nOldPaths); - XFreeFontPath(oldFontPath); - dmxSync(dmxScreen, FALSE); - - return result; -} - -static int dmxProcSetFontPath(ClientPtr client) -{ - unsigned char *ptr; - unsigned long nbytes, total, n; - long nfonts; - int i, result; - int error; - unsigned char *oldFontPath, *tmpFontPath; - int nOldPaths; - int lenOldPaths; - REQUEST(xSetFontPathReq); - - REQUEST_AT_LEAST_SIZE(xSetFontPathReq); - - nbytes = (client->req_len << 2) - sizeof(xSetFontPathReq); - total = nbytes; - ptr = (unsigned char *)&stuff[1]; - nfonts = stuff->nFonts; - - while (--nfonts >= 0) { - if ((total == 0) || (total < (n = (*ptr + 1)))) - return BadLength; - total -= n; - ptr += n; - } - if (total >= 4) - return BadLength; - - tmpFontPath = GetFontPath(&nOldPaths, &lenOldPaths); - oldFontPath = xalloc(nOldPaths + lenOldPaths); - memmove(oldFontPath, tmpFontPath, nOldPaths + lenOldPaths); - - result = SetFontPath(client, stuff->nFonts, (unsigned char *)&stuff[1], - &error); - if (!result) { - for (i = 0; i < dmxNumScreens; i++) - if ((result = dmxCheckFontPath(&dmxScreens[i], &error))) - break; - - if (result) { - int ignoreresult, ignoreerror; - - /* Restore old fontpath in the DMX server */ - ignoreresult = SetFontPath(client, nOldPaths, oldFontPath, - &ignoreerror); - } else { - result = client->noClientException; - client->errorValue = error; - } - } - - xfree(oldFontPath); - return result; -} - -/** Initialize font support. In addition to the screen function call - * pointers, DMX also hooks in at the ProcVector[] level. Here the old - * ProcVector function pointers are saved and the new ProcVector - * function pointers are initialized. */ -void dmxInitFonts(void) -{ - int i; - - for (i = 0; i < 256; i++) - dmxSaveProcVector[i] = ProcVector[i]; - - ProcVector[X_SetFontPath] = dmxProcSetFontPath; -} - -/** Reset font support by restoring the original ProcVector function - * pointers. */ -void dmxResetFonts(void) -{ - int i; - - for (i = 0; i < 256; i++) - ProcVector[i] = dmxSaveProcVector[i]; -} - -/** Load the font, \a pFont, on the back-end server associated with \a - * pScreen. When a font is loaded, the font path on back-end server is - * first initialized to that specified on the command line with the - * -fontpath options, and then the font is loaded. */ -Bool dmxBELoadFont(ScreenPtr pScreen, FontPtr pFont) -{ - DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; - dmxFontPrivPtr pFontPriv = FontGetPrivate(pFont, dmxFontPrivateIndex); - char *name; - char **oldFontPath = NULL; - int nOldPaths; - Atom name_atom, value_atom; - int i; - - /* Make sure we have a font private struct to work with */ - if (!pFontPriv) - return FALSE; - - /* Don't load a font over top of itself */ - if (pFontPriv->font[pScreen->myNum]) { - return TRUE; /* Already loaded font */ - } - - /* Save old font path */ - oldFontPath = XGetFontPath(dmxScreen->beDisplay, &nOldPaths); - - /* Set the font path for the font about to be loaded on the back-end */ - if (dmxSetFontPath(dmxScreen)) { - char **fp; - int npaths; - Bool *goodfps; - - /* This could fail only when first starting the X server and - * loading the default font. If it fails here, then the default - * font path is invalid, no default font path will be set, the - * DMX server will fail to load the default font, and it will - * exit with an error unless we remove the offending font paths - * with the -ignorebadfontpaths command line option. - */ - - fp = dmxGetFontPath(&npaths); - if (!fp) { - dmxLog(dmxError, - "No default font path set.\n"); - dmxLog(dmxError, - "Please see the Xdmx man page for information on how to\n"); - dmxLog(dmxError, - "initialize the DMX server's default font path.\n"); - XFreeFontPath(oldFontPath); - return FALSE; - } - - if (!dmxFontPath) - dmxLog(dmxWarning, "No default font path is set.\n"); - - goodfps = xalloc(npaths * sizeof(*goodfps)); - - dmxLog(dmxError, - "The DMX server failed to set the following font paths on " - "screen #%d:\n", pScreen->myNum); - - for (i = 0; i < npaths; i++) - if (!(goodfps[i] = dmxCheckFontPathElement(dmxScreen, fp[i]))) - dmxLog(dmxError, " %s\n", fp[i]); - - if (dmxIgnoreBadFontPaths) { - char *newfp; - int newnpaths = 0; - int len = 0; - int j = 0; - int error; - - dmxLog(dmxError, - "These font paths will not be used because the " - "\"-ignorebadfontpaths\"\n"); - dmxLog(dmxError, - "option is set.\n"); - - for (i = 0; i < npaths; i++) - if (goodfps[i]) { - len += strlen(fp[i]) + 1; - newnpaths++; - } - - if (!newnpaths) { - /* No valid font paths were found */ - dmxLog(dmxError, - "After removing the font paths above, no valid font " - "paths were\n"); - dmxLog(dmxError, - "available. Please check that the font paths set on " - "the command\n"); - dmxLog(dmxError, - "line or in the configuration file via the " - "\"-fontpath\" option\n"); - dmxLog(dmxError, - "are valid on all back-end servers. See the Xdmx man " - "page for\n"); - dmxLog(dmxError, - "more information on font paths.\n"); - dmxFreeFontPath(fp); - XFreeFontPath(oldFontPath); - xfree(goodfps); - return FALSE; - } - - newfp = xalloc(len * sizeof(*newfp)); - for (i = 0; i < npaths; i++) { - if (goodfps[i]) { - int n = strlen(fp[i]); - newfp[j++] = n; - strncpy(&newfp[j], fp[i], n); - j += n; - } - } - - if (SetFontPath(NULL, newnpaths, (unsigned char *)newfp, &error)) { - /* Note that this should never happen since all of the - * FPEs were previously valid. */ - dmxLog(dmxError, "Cannot reset the default font path.\n"); - } - } else if (dmxFontPath) { - dmxLog(dmxError, - "Please remove these font paths from the command line " - "or\n"); - dmxLog(dmxError, - "configuration file, or set the \"-ignorebadfontpaths\" " - "option to\n"); - dmxLog(dmxError, - "ignore them. For more information on these options, see " - "the\n"); - dmxLog(dmxError, - "Xdmx man page.\n"); - } else { - dmxLog(dmxError, - "Please specify the font paths that are available on all " - "back-end\n"); - dmxLog(dmxError, - "servers with the \"-fontpath\" option, or use the " - "\"-ignorebadfontpaths\"\n"); - dmxLog(dmxError, - "to ignore bad defaults. For more information on " - "these and other\n"); - dmxLog(dmxError, - "font-path-related options, see the Xdmx man page.\n"); - } - - if (!dmxIgnoreBadFontPaths || - (dmxIgnoreBadFontPaths && dmxSetFontPath(dmxScreen))) { - /* We still have errors so return with error */ - dmxFreeFontPath(fp); - XFreeFontPath(oldFontPath); - xfree(goodfps); - return FALSE; - } - } - - /* Find requested font on back-end server */ - name_atom = MakeAtom("FONT", 4, TRUE); - value_atom = 0L; - - for (i = 0; i < pFont->info.nprops; i++) { - if ((Atom)pFont->info.props[i].name == name_atom) { - value_atom = pFont->info.props[i].value; - break; - } - } - if (!value_atom) return FALSE; - - name = (char *)NameForAtom(value_atom); - if (!name) return FALSE; - - pFontPriv->font[pScreen->myNum] = - XLoadQueryFont(dmxScreen->beDisplay, name); - - /* Restore old font path */ - XSetFontPath(dmxScreen->beDisplay, oldFontPath, nOldPaths); - XFreeFontPath(oldFontPath); - dmxSync(dmxScreen, FALSE); - - if (!pFontPriv->font[pScreen->myNum]) return FALSE; - - return TRUE; -} - -/** Realize the font, \a pFont, on the back-end server associated with - * \a pScreen. */ -Bool dmxRealizeFont(ScreenPtr pScreen, FontPtr pFont) -{ - DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; - dmxFontPrivPtr pFontPriv; - - if (!(pFontPriv = FontGetPrivate(pFont, dmxFontPrivateIndex))) { - FontSetPrivate(pFont, dmxFontPrivateIndex, NULL); - pFontPriv = xalloc(sizeof(dmxFontPrivRec)); - if (!pFontPriv) return FALSE; - pFontPriv->font = NULL; - MAXSCREENSALLOC(pFontPriv->font); - if (!pFontPriv->font) { - xfree(pFontPriv); - return FALSE; - } - pFontPriv->refcnt = 0; - } - - FontSetPrivate(pFont, dmxFontPrivateIndex, (pointer)pFontPriv); - - if (dmxScreen->beDisplay) { - if (!dmxBELoadFont(pScreen, pFont)) - return FALSE; - - pFontPriv->refcnt++; - } else { - pFontPriv->font[pScreen->myNum] = NULL; - } - - return TRUE; -} - -/** Free \a pFont on the back-end associated with \a pScreen. */ -Bool dmxBEFreeFont(ScreenPtr pScreen, FontPtr pFont) -{ - DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; - dmxFontPrivPtr pFontPriv = FontGetPrivate(pFont, dmxFontPrivateIndex); - - if (pFontPriv && pFontPriv->font[pScreen->myNum]) { - XFreeFont(dmxScreen->beDisplay, pFontPriv->font[pScreen->myNum]); - pFontPriv->font[pScreen->myNum] = NULL; - return TRUE; - } - - return FALSE; -} - -/** Unrealize the font, \a pFont, on the back-end server associated with - * \a pScreen. */ -Bool dmxUnrealizeFont(ScreenPtr pScreen, FontPtr pFont) -{ - DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; - dmxFontPrivPtr pFontPriv; - - if ((pFontPriv = FontGetPrivate(pFont, dmxFontPrivateIndex))) { - /* In case the font failed to load properly */ - if (!pFontPriv->refcnt) { - MAXSCREENSFREE(pFontPriv->font); - xfree(pFontPriv); - FontSetPrivate(pFont, dmxFontPrivateIndex, NULL); - } else if (pFontPriv->font[pScreen->myNum]) { - if (dmxScreen->beDisplay) - dmxBEFreeFont(pScreen, pFont); - - /* The code below is non-obvious, so here's an explanation... - * - * When creating the default GC, the server opens up the - * default font once for each screen, which in turn calls - * the RealizeFont function pointer once for each screen. - * During this process both dix's font refcnt and DMX's font - * refcnt are incremented once for each screen. - * - * Later, when shutting down the X server, dix shuts down - * each screen in reverse order. During this shutdown - * procedure, each screen's default GC is freed and then - * that screen is closed by calling the CloseScreen function - * pointer. screenInfo.numScreens is then decremented after - * closing each screen. This procedure means that the dix's - * font refcnt for the font used by the default GC's is - * decremented once for each screen # greater than 0. - * However, since dix's refcnt for the default font is not - * yet 0 for each screen greater than 0, no call to the - * UnrealizeFont function pointer is made for those screens. - * Then, when screen 0 is being closed, dix's font refcnt - * for the default GC's font is finally 0 and the font is - * unrealized. However, since screenInfo.numScreens has - * been decremented already down to 1, only one call to - * UnrealizeFont is made (for screen 0). Thus, even though - * RealizeFont was called once for each screen, - * UnrealizeFont is only called for screen 0. - * - * This is a bug in dix. - * - * To avoid the memory leak of pFontPriv for each server - * generation, we can also free pFontPriv if the refcnt is - * not yet 0 but the # of screens is 1 -- i.e., the case - * described in the dix bug above. This is only a temporary - * workaround until the bug in dix is solved. - * - * The other problem is that the font structure allocated by - * XLoadQueryFont() above is not freed for screens > 0. - * This problem cannot be worked around here since the back- - * end displays for screens > 0 have already been closed by - * the time this code is called from dix. - * - * When the bug in dix described above is fixed, then we can - * remove the "|| screenInfo.numScreens == 1" code below and - * the memory leaks will be eliminated. - */ - if (--pFontPriv->refcnt == 0 -#if 1 - /* Remove this code when the dix bug is fixed */ - || screenInfo.numScreens == 1 -#endif - ) { - MAXSCREENSFREE(pFontPriv->font); - xfree(pFontPriv); - FontSetPrivate(pFont, dmxFontPrivateIndex, NULL); - } - } - } - - return TRUE; -} |