diff options
Diffstat (limited to 'libXext/src')
| -rw-r--r-- | libXext/src/Makefile.am | 134 | ||||
| -rw-r--r-- | libXext/src/Makefile.in | 683 | ||||
| -rw-r--r-- | libXext/src/Xdbe.c | 947 | ||||
| -rw-r--r-- | libXext/src/extutil.c | 564 |
4 files changed, 822 insertions, 1506 deletions
diff --git a/libXext/src/Makefile.am b/libXext/src/Makefile.am index 6a7d379cb..99c711aaa 100644 --- a/libXext/src/Makefile.am +++ b/libXext/src/Makefile.am @@ -1,66 +1,68 @@ -lib_LTLIBRARIES=libXext.la - -AM_CFLAGS=\ - -I$(top_srcdir)/include \ - -I$(top_srcdir)/include/X11/extensions\ - $(XEXT_CFLAGS) $(MALLOC_ZERO_CFLAGS) - -libXext_la_LDFLAGS = -version-number $(XEXT_SOREV) -no-undefined - -libXext_la_LIBADD = $(XEXT_LIBS) - -libXext_la_SOURCES = \ - DPMS.c \ - MITMisc.c \ - XAppgroup.c \ - XEVI.c \ - XLbx.c \ - XMultibuf.c \ - XSecurity.c \ - XShape.c \ - XShm.c \ - XSync.c \ - XTestExt1.c \ - Xcup.c \ - Xdbe.c \ - Xge.c \ - extutil.c \ - globals.c - -libXextincludedir = $(includedir)/X11/extensions -libXextinclude_HEADERS = $(top_srcdir)/include/X11/extensions/dpms.h \ - $(top_srcdir)/include/X11/extensions/extutil.h \ - $(top_srcdir)/include/X11/extensions/lbxbuf.h \ - $(top_srcdir)/include/X11/extensions/lbxbufstr.h \ - $(top_srcdir)/include/X11/extensions/lbximage.h \ - $(top_srcdir)/include/X11/extensions/MITMisc.h \ - $(top_srcdir)/include/X11/extensions/multibuf.h \ - $(top_srcdir)/include/X11/extensions/security.h \ - $(top_srcdir)/include/X11/extensions/shape.h \ - $(top_srcdir)/include/X11/extensions/sync.h \ - $(top_srcdir)/include/X11/extensions/Xag.h \ - $(top_srcdir)/include/X11/extensions/Xcup.h \ - $(top_srcdir)/include/X11/extensions/Xdbe.h \ - $(top_srcdir)/include/X11/extensions/XEVI.h \ - $(top_srcdir)/include/X11/extensions/Xext.h \ - $(top_srcdir)/include/X11/extensions/Xge.h \ - $(top_srcdir)/include/X11/extensions/XLbx.h \ - $(top_srcdir)/include/X11/extensions/XShm.h \ - $(top_srcdir)/include/X11/extensions/xtestext1.h - -if LINT -ALL_LINT_FLAGS=$(LINT_FLAGS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \ - $(AM_CPPFLAGS) $(CPPFLAGS) - -lint: - $(LINT) $(ALL_LINT_FLAGS) $(libXext_la_SOURCES) $(XEXT_LIBS) -endif LINT - -if MAKE_LINT_LIB -lintlibdir = $(libdir) - -lintlib_DATA = $(LINTLIB) - -$(LINTLIB): $(libXext_la_SOURCES) - $(LINT) -y -oXext -x $(ALL_LINT_FLAGS) $(libXext_la_SOURCES) -endif MAKE_LINT_LIB +lib_LTLIBRARIES=libXext.la
+
+AM_CPPFLAGS=\
+ -I$(top_srcdir)/include \
+ -I$(top_srcdir)/include/X11/extensions\
+ $(XEXT_CFLAGS) $(MALLOC_ZERO_CFLAGS)
+
+AM_CFLAGS=$(CWARNFLAGS)
+
+libXext_la_LDFLAGS = -version-number $(XEXT_SOREV) -no-undefined
+
+libXext_la_LIBADD = $(XEXT_LIBS)
+
+libXext_la_SOURCES = \
+ DPMS.c \
+ MITMisc.c \
+ XAppgroup.c \
+ XEVI.c \
+ XLbx.c \
+ XMultibuf.c \
+ XSecurity.c \
+ XShape.c \
+ XShm.c \
+ XSync.c \
+ XTestExt1.c \
+ Xcup.c \
+ Xdbe.c \
+ Xge.c \
+ extutil.c \
+ globals.c
+
+libXextincludedir = $(includedir)/X11/extensions
+libXextinclude_HEADERS = $(top_srcdir)/include/X11/extensions/dpms.h \
+ $(top_srcdir)/include/X11/extensions/extutil.h \
+ $(top_srcdir)/include/X11/extensions/lbxbuf.h \
+ $(top_srcdir)/include/X11/extensions/lbxbufstr.h \
+ $(top_srcdir)/include/X11/extensions/lbximage.h \
+ $(top_srcdir)/include/X11/extensions/MITMisc.h \
+ $(top_srcdir)/include/X11/extensions/multibuf.h \
+ $(top_srcdir)/include/X11/extensions/security.h \
+ $(top_srcdir)/include/X11/extensions/shape.h \
+ $(top_srcdir)/include/X11/extensions/sync.h \
+ $(top_srcdir)/include/X11/extensions/Xag.h \
+ $(top_srcdir)/include/X11/extensions/Xcup.h \
+ $(top_srcdir)/include/X11/extensions/Xdbe.h \
+ $(top_srcdir)/include/X11/extensions/XEVI.h \
+ $(top_srcdir)/include/X11/extensions/Xext.h \
+ $(top_srcdir)/include/X11/extensions/Xge.h \
+ $(top_srcdir)/include/X11/extensions/XLbx.h \
+ $(top_srcdir)/include/X11/extensions/XShm.h \
+ $(top_srcdir)/include/X11/extensions/xtestext1.h
+
+if LINT
+ALL_LINT_FLAGS=$(LINT_FLAGS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
+ $(AM_CPPFLAGS) $(CPPFLAGS)
+
+lint:
+ $(LINT) $(ALL_LINT_FLAGS) $(libXext_la_SOURCES) $(XEXT_LIBS)
+endif LINT
+
+if MAKE_LINT_LIB
+lintlibdir = $(libdir)
+
+lintlib_DATA = $(LINTLIB)
+
+$(LINTLIB): $(libXext_la_SOURCES)
+ $(LINT) -y -oXext -x $(ALL_LINT_FLAGS) $(libXext_la_SOURCES)
+endif MAKE_LINT_LIB
diff --git a/libXext/src/Makefile.in b/libXext/src/Makefile.in deleted file mode 100644 index 932430f8e..000000000 --- a/libXext/src/Makefile.in +++ /dev/null @@ -1,683 +0,0 @@ -# Makefile.in generated by automake 1.11 from Makefile.am. -# @configure_input@ - -# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, -# 2003, 2004, 2005, 2006, 2007, 2008, 2009 Free Software Foundation, -# Inc. -# This Makefile.in is free software; the Free Software Foundation -# gives unlimited permission to copy and/or distribute it, -# with or without modifications, as long as this notice is preserved. - -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY, to the extent permitted by law; without -# even the implied warranty of MERCHANTABILITY or FITNESS FOR A -# PARTICULAR PURPOSE. - -@SET_MAKE@ - - - -VPATH = @srcdir@ -pkgdatadir = $(datadir)/@PACKAGE@ -pkgincludedir = $(includedir)/@PACKAGE@ -pkglibdir = $(libdir)/@PACKAGE@ -pkglibexecdir = $(libexecdir)/@PACKAGE@ -am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd -install_sh_DATA = $(install_sh) -c -m 644 -install_sh_PROGRAM = $(install_sh) -c -install_sh_SCRIPT = $(install_sh) -c -INSTALL_HEADER = $(INSTALL_DATA) -transform = $(program_transform_name) -NORMAL_INSTALL = : -PRE_INSTALL = : -POST_INSTALL = : -NORMAL_UNINSTALL = : -PRE_UNINSTALL = : -POST_UNINSTALL = : -build_triplet = @build@ -host_triplet = @host@ -subdir = src -DIST_COMMON = $(libXextinclude_HEADERS) $(srcdir)/Makefile.am \ - 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* - * Copyright (c) 1994, 1995 Hewlett-Packard Company - * - * 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 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 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 NONINFRINGEMENT. - * IN NO EVENT SHALL HEWLETT-PACKARD COMPANY 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. - * - * Except as contained in this notice, the name of the Hewlett-Packard - * Company shall not be used in advertising or otherwise to promote the - * sale, use or other dealings in this Software without prior written - * authorization from the Hewlett-Packard Company. - * - * Xlib DBE code - * - *****************************************************************************/ -/* $XFree86: xc/lib/Xext/Xdbe.c,v 3.7 2002/10/16 02:19:22 dawes Exp $ */ - -#define NEED_EVENTS -#define NEED_REPLIES -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include <stdio.h> -#include <X11/Xlibint.h> -#include <X11/extensions/Xext.h> -#include <X11/extensions/extutil.h> -#include <X11/extensions/Xdbe.h> -#include <X11/extensions/dbeproto.h> - -static XExtensionInfo _dbe_info_data; -static XExtensionInfo *dbe_info = &_dbe_info_data; -static char *dbe_extension_name = DBE_PROTOCOL_NAME; - -#define DbeCheckExtension(dpy,i,val) \ - XextCheckExtension (dpy, i, dbe_extension_name, val) -#define DbeSimpleCheckExtension(dpy,i) \ - XextSimpleCheckExtension (dpy, i, dbe_extension_name) - -#if !defined(UNIXCPP) -#define DbeGetReq(name,req,info) GetReq (name, req); \ - req->reqType = info->codes->major_opcode; \ - req->dbeReqType = X_##name; -#else -#define DbeGetReq(name,req,info) GetReq (name, req); \ - req->reqType = info->codes->major_opcode; \ - req->dbeReqType = X_/**/name; -#endif - - -/***************************************************************************** - * * - * private utility routines * - * * - *****************************************************************************/ - -/* - * find_display - locate the display info block - */ -static int close_display(Display *dpy, XExtCodes *codes); -static char *error_string(Display *dpy, int code, XExtCodes *codes, - char *buf, int n); -static XExtensionHooks dbe_extension_hooks = { - NULL, /* create_gc */ - NULL, /* copy_gc */ - NULL, /* flush_gc */ - NULL, /* free_gc */ - NULL, /* create_font */ - NULL, /* free_font */ - close_display, /* close_display */ - NULL, /* wire_to_event */ - NULL, /* event_to_wire */ - NULL, /* error */ - error_string, /* error_string */ -}; - -static char *dbe_error_list[] = { - "BadBuffer", /* DbeBadBuffer */ -}; - -static XEXT_GENERATE_FIND_DISPLAY (find_display, dbe_info, - dbe_extension_name, - &dbe_extension_hooks, - DbeNumberEvents, NULL) - -static XEXT_GENERATE_CLOSE_DISPLAY (close_display, dbe_info) - -static XEXT_GENERATE_ERROR_STRING (error_string, dbe_extension_name, - DbeNumberErrors, - dbe_error_list) - - -/***************************************************************************** - * * - * Double-Buffering public interfaces * - * * - *****************************************************************************/ - -/* - * XdbeQueryExtension - - * Sets major_version_return and minor_verion_return to the major and - * minor DBE protocol version supported by the server. If the DBE - * library is compatible with the version returned by the server, this - * function returns non-zero. If dpy does not support the DBE - * extension, or if there was an error during communication with the - * server, or if the server and library protocol versions are - * incompatible, this functions returns zero. No other Xdbe functions - * may be called before this function. If a client violates this rule, - * the effects of all subsequent Xdbe calls are undefined. - */ -Status XdbeQueryExtension ( - Display *dpy, - int *major_version_return, - int *minor_version_return) -{ - XExtDisplayInfo *info = find_display (dpy); - xDbeGetVersionReply rep; - register xDbeGetVersionReq *req; - - if (!XextHasExtension (info)) - return (Status)0; /* failure */ - - LockDisplay (dpy); - DbeGetReq (DbeGetVersion, req, info); - req->majorVersion = DBE_MAJOR_VERSION; - req->minorVersion = DBE_MINOR_VERSION; - - if (!_XReply (dpy, (xReply *) &rep, 0, xTrue)) { - UnlockDisplay (dpy); - SyncHandle (); - return (Status)0; /* failure */ - } - *major_version_return = rep.majorVersion; - *minor_version_return = rep.minorVersion; - UnlockDisplay (dpy); - - SyncHandle (); - - if (*major_version_return != DBE_MAJOR_VERSION) - return (Status)0; /* failure */ - else - return (Status)1; /* success */ -} - - -/* - * XdbeAllocateBackBuffer - - * This function returns a drawable ID used to refer to the back buffer - * of the specified window. The swap_action is a hint to indicate the - * swap action that will likely be used in subsequent calls to - * XdbeSwapBuffers. The actual swap action used in calls to - * XdbeSwapBuffers does not have to be the same as the swap_action - * passed to this function, though clients are encouraged to provide - * accurate information whenever possible. - */ - -XdbeBackBuffer XdbeAllocateBackBufferName( - Display *dpy, - Window window, - XdbeSwapAction swap_action) -{ - XExtDisplayInfo *info = find_display (dpy); - register xDbeAllocateBackBufferNameReq *req; - XdbeBackBuffer buffer; - - /* make sure extension is available; if not, return the - * third parameter (0). - */ - DbeCheckExtension (dpy, info, (XdbeBackBuffer)0); - - /* allocate the id */ - buffer = XAllocID (dpy); - - LockDisplay(dpy); - DbeGetReq(DbeAllocateBackBufferName, req, info); - req->window = window; - req->swapAction = (unsigned char)swap_action; - req->buffer = buffer; - - UnlockDisplay (dpy); - SyncHandle (); - return buffer; - -} /* XdbeAllocateBackBufferName() */ - -/* - * XdbeDeallocateBackBufferName - - * This function frees a drawable ID, buffer, that was obtained via - * XdbeAllocateBackBufferName. The buffer must refer to the back buffer - * of the specified window, or a protocol error results. - */ -Status XdbeDeallocateBackBufferName ( - Display *dpy, - XdbeBackBuffer buffer) -{ - XExtDisplayInfo *info = find_display (dpy); - register xDbeDeallocateBackBufferNameReq *req; - - DbeCheckExtension (dpy, info, (Status)0 /* failure */); - - LockDisplay (dpy); - DbeGetReq (DbeDeallocateBackBufferName, req, info); - req->buffer = buffer; - UnlockDisplay (dpy); - SyncHandle (); - - return (Status)1; /* success */ -} - - -/* - * XdbeSwapBuffers - - * This function swaps the front and back buffers for a list of windows. - * The argument num_windows specifies how many windows are to have their - * buffers swapped; it is the number of elements in the swap_info array. - * The argument swap_info specifies the information needed per window - * to do the swap. - */ -Status XdbeSwapBuffers ( - Display *dpy, - XdbeSwapInfo *swap_info, - int num_windows) -{ - XExtDisplayInfo *info = find_display (dpy); - register xDbeSwapBuffersReq *req; - int i; - - DbeCheckExtension (dpy, info, (Status)0 /* failure */); - - LockDisplay (dpy); - DbeGetReq (DbeSwapBuffers, req, info); - req->length += 2*num_windows; - req->n = num_windows; - - /* We need to handle 64-bit machines, where we can not use PackData32 - * directly because info would be lost in translating from 32- to 64-bit. - * Instead we send data via a loop that accounts for the translation. - */ - for (i = 0; i < num_windows; i++) - { - char tmp[4]; - Data32 (dpy, (long *)&swap_info[i].swap_window, 4); - tmp[0] = swap_info[i].swap_action; - Data (dpy, (char *)tmp, 4); - } - - UnlockDisplay (dpy); - SyncHandle (); - - - return (Status)1; /* success */ - -} /* XdbeSwapBuffers() */ - - -/* - * XdbeBeginIdiom - - * This function marks the beginning of an idiom sequence. - */ -Status XdbeBeginIdiom (Display *dpy) -{ - XExtDisplayInfo *info = find_display(dpy); - register xDbeBeginIdiomReq *req; - - DbeCheckExtension (dpy, info, (Status)0 /* failure */); - - LockDisplay (dpy); - DbeGetReq (DbeBeginIdiom, req, info); - UnlockDisplay (dpy); - SyncHandle (); - - return (Status)1; /* success */ -} - - -/* - * XdbeEndIdiom - - * This function marks the end of an idiom sequence. - */ -Status XdbeEndIdiom (Display *dpy) -{ - XExtDisplayInfo *info = find_display(dpy); - register xDbeEndIdiomReq *req; - - DbeCheckExtension (dpy, info, (Status)0 /* failure */); - - LockDisplay (dpy); - DbeGetReq (DbeEndIdiom, req, info); - UnlockDisplay (dpy); - SyncHandle (); - - return (Status)1; /* success */ -} - - -/* - * XdbeGetVisualInfo - - * This function returns information about which visuals support - * double buffering. The argument num_screens specifies how many - * elements there are in the screen_specifiers list. Each drawable - * in screen_specifiers designates a screen for which the supported - * visuals are being requested. If num_screens is zero, information - * for all screens is requested. In this case, upon return from this - * function, num_screens will be set to the number of screens that were - * found. If an error occurs, this function returns NULL, else it returns - * a pointer to a list of XdbeScreenVisualInfo structures of length - * num_screens. The nth element in the returned list corresponds to the - * nth drawable in the screen_specifiers list, unless num_screens was - * passed in with the value zero, in which case the nth element in the - * returned list corresponds to the nth screen of the server, starting - * with screen zero. - */ -XdbeScreenVisualInfo *XdbeGetVisualInfo ( - Display *dpy, - Drawable *screen_specifiers, - int *num_screens) /* SEND and RETURN */ -{ - XExtDisplayInfo *info = find_display(dpy); - register xDbeGetVisualInfoReq *req; - xDbeGetVisualInfoReply rep; - XdbeScreenVisualInfo *scrVisInfo; - int i; - - DbeCheckExtension (dpy, info, (XdbeScreenVisualInfo *)NULL); - - LockDisplay (dpy); - - DbeGetReq(DbeGetVisualInfo, req, info); - req->length = 2 + *num_screens; - req->n = *num_screens; - Data32 (dpy, screen_specifiers, (*num_screens * sizeof (CARD32))); - - if (!_XReply (dpy, (xReply *) &rep, 0, xFalse)) { - UnlockDisplay (dpy); - SyncHandle (); - return NULL; - } - - /* return the number of screens actually found if we - * requested information about all screens (*num_screens == 0) - */ - if (*num_screens == 0) - *num_screens = rep.m; - - /* allocate list of visual information to be returned */ - if (!(scrVisInfo = - (XdbeScreenVisualInfo *)Xmalloc( - (unsigned)(*num_screens * sizeof(XdbeScreenVisualInfo))))) { - UnlockDisplay (dpy); - SyncHandle (); - return NULL; - } - - for (i = 0; i < *num_screens; i++) - { - int nbytes; - int j; - long c; - - _XRead32 (dpy, &c, sizeof(CARD32)); - scrVisInfo[i].count = c; - - nbytes = scrVisInfo[i].count * sizeof(XdbeVisualInfo); - - /* if we can not allocate the list of visual/depth info - * then free the lists that we already allocate as well - * as the visual info list itself - */ - if (!(scrVisInfo[i].visinfo = (XdbeVisualInfo *)Xmalloc( - (unsigned)nbytes))) { - for (j = 0; j < i; j++) { - Xfree ((char *)scrVisInfo[j].visinfo); - } - Xfree ((char *)scrVisInfo); - UnlockDisplay (dpy); - SyncHandle (); - return NULL; - } - - /* Read the visual info item into the wire structure. Then copy each - * element into the library structure. The element sizes and/or - * padding may be different in the two structures. - */ - for (j = 0; j < scrVisInfo[i].count; j++) { - xDbeVisInfo xvi; - - _XRead (dpy, (char *)&xvi, sizeof(xDbeVisInfo)); - scrVisInfo[i].visinfo[j].visual = xvi.visualID; - scrVisInfo[i].visinfo[j].depth = xvi.depth; - scrVisInfo[i].visinfo[j].perflevel = xvi.perfLevel; - } - - } - - UnlockDisplay (dpy); - SyncHandle (); - return scrVisInfo; - -} /* XdbeGetVisualInfo() */ - - -/* - * XdbeFreeVisualInfo - - * This function frees the list of XdbeScreenVisualInfo returned by the - * function XdbeGetVisualInfo. - */ -void XdbeFreeVisualInfo(XdbeScreenVisualInfo *visual_info) -{ - if (visual_info == NULL) { - return; - } - - if (visual_info->visinfo) { - XFree(visual_info->visinfo); - } - - XFree(visual_info); -} - - -/* - * XdbeGetBackBufferAttributes - - * This function returns the attributes associated with the specified - * buffer. - */ -XdbeBackBufferAttributes *XdbeGetBackBufferAttributes( - Display *dpy, - XdbeBackBuffer buffer) -{ - XExtDisplayInfo *info = find_display(dpy); - register xDbeGetBackBufferAttributesReq *req; - xDbeGetBackBufferAttributesReply rep; - XdbeBackBufferAttributes *attr; - - DbeCheckExtension(dpy, info, (XdbeBackBufferAttributes *)NULL); - - if (!(attr = - (XdbeBackBufferAttributes *)Xmalloc(sizeof(XdbeBackBufferAttributes)))) { - return NULL; - } - - LockDisplay(dpy); - DbeGetReq(DbeGetBackBufferAttributes, req, info); - req->buffer = buffer; - - if (!_XReply (dpy, (xReply *) &rep, 0, xTrue)) { - UnlockDisplay (dpy); - SyncHandle (); - Xfree(attr); - return NULL; - } - attr->window = rep.attributes; - - UnlockDisplay (dpy); - SyncHandle (); - - return attr; -} - +/* $Xorg: Xdbe.c,v 1.4 2000/08/17 19:45:53 cpqbld Exp $ */
+/******************************************************************************
+ *
+ * Copyright (c) 1994, 1995 Hewlett-Packard Company
+ *
+ * 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 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 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 NONINFRINGEMENT.
+ * IN NO EVENT SHALL HEWLETT-PACKARD COMPANY 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.
+ *
+ * Except as contained in this notice, the name of the Hewlett-Packard
+ * Company shall not be used in advertising or otherwise to promote the
+ * sale, use or other dealings in this Software without prior written
+ * authorization from the Hewlett-Packard Company.
+ *
+ * Xlib DBE code
+ *
+ *****************************************************************************/
+/* $XFree86: xc/lib/Xext/Xdbe.c,v 3.7 2002/10/16 02:19:22 dawes Exp $ */
+
+#define NEED_EVENTS
+#define NEED_REPLIES
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdio.h>
+#include <X11/Xlibint.h>
+#include <X11/extensions/Xext.h>
+#include <X11/extensions/extutil.h>
+#include <X11/extensions/Xdbe.h>
+#include <X11/extensions/dbeproto.h>
+
+static XExtensionInfo _dbe_info_data;
+static XExtensionInfo *dbe_info = &_dbe_info_data;
+static char *dbe_extension_name = DBE_PROTOCOL_NAME;
+
+#define DbeCheckExtension(dpy,i,val) \
+ XextCheckExtension (dpy, i, dbe_extension_name, val)
+#define DbeSimpleCheckExtension(dpy,i) \
+ XextSimpleCheckExtension (dpy, i, dbe_extension_name)
+
+#if !defined(UNIXCPP)
+#define DbeGetReq(name,req,info) GetReq (name, req); \
+ req->reqType = info->codes->major_opcode; \
+ req->dbeReqType = X_##name;
+#else
+#define DbeGetReq(name,req,info) GetReq (name, req); \
+ req->reqType = info->codes->major_opcode; \
+ req->dbeReqType = X_/**/name;
+#endif
+
+
+/*****************************************************************************
+ * *
+ * private utility routines *
+ * *
+ *****************************************************************************/
+
+/*
+ * find_display - locate the display info block
+ */
+static int close_display(Display *dpy, XExtCodes *codes);
+static char *error_string(Display *dpy, int code, XExtCodes *codes,
+ char *buf, int n);
+static XExtensionHooks dbe_extension_hooks = {
+ NULL, /* create_gc */
+ NULL, /* copy_gc */
+ NULL, /* flush_gc */
+ NULL, /* free_gc */
+ NULL, /* create_font */
+ NULL, /* free_font */
+ close_display, /* close_display */
+ NULL, /* wire_to_event */
+ NULL, /* event_to_wire */
+ NULL, /* error */
+ error_string, /* error_string */
+};
+
+static char *dbe_error_list[] = {
+ "BadBuffer", /* DbeBadBuffer */
+};
+
+static XEXT_GENERATE_FIND_DISPLAY (find_display, dbe_info,
+ dbe_extension_name,
+ &dbe_extension_hooks,
+ DbeNumberEvents, NULL)
+
+static XEXT_GENERATE_CLOSE_DISPLAY (close_display, dbe_info)
+
+static XEXT_GENERATE_ERROR_STRING (error_string, dbe_extension_name,
+ DbeNumberErrors,
+ dbe_error_list)
+
+
+/*****************************************************************************
+ * *
+ * Double-Buffering public interfaces *
+ * *
+ *****************************************************************************/
+
+/*
+ * XdbeQueryExtension -
+ * Sets major_version_return and minor_verion_return to the major and
+ * minor DBE protocol version supported by the server. If the DBE
+ * library is compatible with the version returned by the server, this
+ * function returns non-zero. If dpy does not support the DBE
+ * extension, or if there was an error during communication with the
+ * server, or if the server and library protocol versions are
+ * incompatible, this functions returns zero. No other Xdbe functions
+ * may be called before this function. If a client violates this rule,
+ * the effects of all subsequent Xdbe calls are undefined.
+ */
+Status XdbeQueryExtension (
+ Display *dpy,
+ int *major_version_return,
+ int *minor_version_return)
+{
+ XExtDisplayInfo *info = find_display (dpy);
+ xDbeGetVersionReply rep;
+ register xDbeGetVersionReq *req;
+
+ if (!XextHasExtension (info))
+ return (Status)0; /* failure */
+
+ LockDisplay (dpy);
+ DbeGetReq (DbeGetVersion, req, info);
+ req->majorVersion = DBE_MAJOR_VERSION;
+ req->minorVersion = DBE_MINOR_VERSION;
+
+ if (!_XReply (dpy, (xReply *) &rep, 0, xTrue)) {
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return (Status)0; /* failure */
+ }
+ *major_version_return = rep.majorVersion;
+ *minor_version_return = rep.minorVersion;
+ UnlockDisplay (dpy);
+
+ SyncHandle ();
+
+ if (*major_version_return != DBE_MAJOR_VERSION)
+ return (Status)0; /* failure */
+ else
+ return (Status)1; /* success */
+}
+
+
+/*
+ * XdbeAllocateBackBuffer -
+ * This function returns a drawable ID used to refer to the back buffer
+ * of the specified window. The swap_action is a hint to indicate the
+ * swap action that will likely be used in subsequent calls to
+ * XdbeSwapBuffers. The actual swap action used in calls to
+ * XdbeSwapBuffers does not have to be the same as the swap_action
+ * passed to this function, though clients are encouraged to provide
+ * accurate information whenever possible.
+ */
+
+XdbeBackBuffer XdbeAllocateBackBufferName(
+ Display *dpy,
+ Window window,
+ XdbeSwapAction swap_action)
+{
+ XExtDisplayInfo *info = find_display (dpy);
+ register xDbeAllocateBackBufferNameReq *req;
+ XdbeBackBuffer buffer;
+
+ /* make sure extension is available; if not, return the
+ * third parameter (0).
+ */
+ DbeCheckExtension (dpy, info, (XdbeBackBuffer)0);
+
+ LockDisplay(dpy);
+ DbeGetReq(DbeAllocateBackBufferName, req, info);
+ req->window = window;
+ req->swapAction = (unsigned char)swap_action;
+ req->buffer = buffer = XAllocID (dpy);
+
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return buffer;
+
+} /* XdbeAllocateBackBufferName() */
+
+/*
+ * XdbeDeallocateBackBufferName -
+ * This function frees a drawable ID, buffer, that was obtained via
+ * XdbeAllocateBackBufferName. The buffer must refer to the back buffer
+ * of the specified window, or a protocol error results.
+ */
+Status XdbeDeallocateBackBufferName (
+ Display *dpy,
+ XdbeBackBuffer buffer)
+{
+ XExtDisplayInfo *info = find_display (dpy);
+ register xDbeDeallocateBackBufferNameReq *req;
+
+ DbeCheckExtension (dpy, info, (Status)0 /* failure */);
+
+ LockDisplay (dpy);
+ DbeGetReq (DbeDeallocateBackBufferName, req, info);
+ req->buffer = buffer;
+ UnlockDisplay (dpy);
+ SyncHandle ();
+
+ return (Status)1; /* success */
+}
+
+
+/*
+ * XdbeSwapBuffers -
+ * This function swaps the front and back buffers for a list of windows.
+ * The argument num_windows specifies how many windows are to have their
+ * buffers swapped; it is the number of elements in the swap_info array.
+ * The argument swap_info specifies the information needed per window
+ * to do the swap.
+ */
+Status XdbeSwapBuffers (
+ Display *dpy,
+ XdbeSwapInfo *swap_info,
+ int num_windows)
+{
+ XExtDisplayInfo *info = find_display (dpy);
+ register xDbeSwapBuffersReq *req;
+ int i;
+
+ DbeCheckExtension (dpy, info, (Status)0 /* failure */);
+
+ LockDisplay (dpy);
+ DbeGetReq (DbeSwapBuffers, req, info);
+ req->length += 2*num_windows;
+ req->n = num_windows;
+
+ /* We need to handle 64-bit machines, where we can not use PackData32
+ * directly because info would be lost in translating from 32- to 64-bit.
+ * Instead we send data via a loop that accounts for the translation.
+ */
+ for (i = 0; i < num_windows; i++)
+ {
+ char tmp[4];
+ Data32 (dpy, (long *)&swap_info[i].swap_window, 4);
+ tmp[0] = swap_info[i].swap_action;
+ Data (dpy, (char *)tmp, 4);
+ }
+
+ UnlockDisplay (dpy);
+ SyncHandle ();
+
+
+ return (Status)1; /* success */
+
+} /* XdbeSwapBuffers() */
+
+
+/*
+ * XdbeBeginIdiom -
+ * This function marks the beginning of an idiom sequence.
+ */
+Status XdbeBeginIdiom (Display *dpy)
+{
+ XExtDisplayInfo *info = find_display(dpy);
+ register xDbeBeginIdiomReq *req;
+
+ DbeCheckExtension (dpy, info, (Status)0 /* failure */);
+
+ LockDisplay (dpy);
+ DbeGetReq (DbeBeginIdiom, req, info);
+ UnlockDisplay (dpy);
+ SyncHandle ();
+
+ return (Status)1; /* success */
+}
+
+
+/*
+ * XdbeEndIdiom -
+ * This function marks the end of an idiom sequence.
+ */
+Status XdbeEndIdiom (Display *dpy)
+{
+ XExtDisplayInfo *info = find_display(dpy);
+ register xDbeEndIdiomReq *req;
+
+ DbeCheckExtension (dpy, info, (Status)0 /* failure */);
+
+ LockDisplay (dpy);
+ DbeGetReq (DbeEndIdiom, req, info);
+ UnlockDisplay (dpy);
+ SyncHandle ();
+
+ return (Status)1; /* success */
+}
+
+
+/*
+ * XdbeGetVisualInfo -
+ * This function returns information about which visuals support
+ * double buffering. The argument num_screens specifies how many
+ * elements there are in the screen_specifiers list. Each drawable
+ * in screen_specifiers designates a screen for which the supported
+ * visuals are being requested. If num_screens is zero, information
+ * for all screens is requested. In this case, upon return from this
+ * function, num_screens will be set to the number of screens that were
+ * found. If an error occurs, this function returns NULL, else it returns
+ * a pointer to a list of XdbeScreenVisualInfo structures of length
+ * num_screens. The nth element in the returned list corresponds to the
+ * nth drawable in the screen_specifiers list, unless num_screens was
+ * passed in with the value zero, in which case the nth element in the
+ * returned list corresponds to the nth screen of the server, starting
+ * with screen zero.
+ */
+XdbeScreenVisualInfo *XdbeGetVisualInfo (
+ Display *dpy,
+ Drawable *screen_specifiers,
+ int *num_screens) /* SEND and RETURN */
+{
+ XExtDisplayInfo *info = find_display(dpy);
+ register xDbeGetVisualInfoReq *req;
+ xDbeGetVisualInfoReply rep;
+ XdbeScreenVisualInfo *scrVisInfo;
+ int i;
+
+ DbeCheckExtension (dpy, info, (XdbeScreenVisualInfo *)NULL);
+
+ LockDisplay (dpy);
+
+ DbeGetReq(DbeGetVisualInfo, req, info);
+ req->length = 2 + *num_screens;
+ req->n = *num_screens;
+ Data32 (dpy, screen_specifiers, (*num_screens * sizeof (CARD32)));
+
+ if (!_XReply (dpy, (xReply *) &rep, 0, xFalse)) {
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return NULL;
+ }
+
+ /* return the number of screens actually found if we
+ * requested information about all screens (*num_screens == 0)
+ */
+ if (*num_screens == 0)
+ *num_screens = rep.m;
+
+ /* allocate list of visual information to be returned */
+ if (!(scrVisInfo =
+ (XdbeScreenVisualInfo *)Xmalloc(
+ (unsigned)(*num_screens * sizeof(XdbeScreenVisualInfo))))) {
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return NULL;
+ }
+
+ for (i = 0; i < *num_screens; i++)
+ {
+ int nbytes;
+ int j;
+ long c;
+
+ _XRead32 (dpy, &c, sizeof(CARD32));
+ scrVisInfo[i].count = c;
+
+ nbytes = scrVisInfo[i].count * sizeof(XdbeVisualInfo);
+
+ /* if we can not allocate the list of visual/depth info
+ * then free the lists that we already allocate as well
+ * as the visual info list itself
+ */
+ if (!(scrVisInfo[i].visinfo = (XdbeVisualInfo *)Xmalloc(
+ (unsigned)nbytes))) {
+ for (j = 0; j < i; j++) {
+ Xfree ((char *)scrVisInfo[j].visinfo);
+ }
+ Xfree ((char *)scrVisInfo);
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return NULL;
+ }
+
+ /* Read the visual info item into the wire structure. Then copy each
+ * element into the library structure. The element sizes and/or
+ * padding may be different in the two structures.
+ */
+ for (j = 0; j < scrVisInfo[i].count; j++) {
+ xDbeVisInfo xvi;
+
+ _XRead (dpy, (char *)&xvi, sizeof(xDbeVisInfo));
+ scrVisInfo[i].visinfo[j].visual = xvi.visualID;
+ scrVisInfo[i].visinfo[j].depth = xvi.depth;
+ scrVisInfo[i].visinfo[j].perflevel = xvi.perfLevel;
+ }
+
+ }
+
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ return scrVisInfo;
+
+} /* XdbeGetVisualInfo() */
+
+
+/*
+ * XdbeFreeVisualInfo -
+ * This function frees the list of XdbeScreenVisualInfo returned by the
+ * function XdbeGetVisualInfo.
+ */
+void XdbeFreeVisualInfo(XdbeScreenVisualInfo *visual_info)
+{
+ if (visual_info == NULL) {
+ return;
+ }
+
+ if (visual_info->visinfo) {
+ XFree(visual_info->visinfo);
+ }
+
+ XFree(visual_info);
+}
+
+
+/*
+ * XdbeGetBackBufferAttributes -
+ * This function returns the attributes associated with the specified
+ * buffer.
+ */
+XdbeBackBufferAttributes *XdbeGetBackBufferAttributes(
+ Display *dpy,
+ XdbeBackBuffer buffer)
+{
+ XExtDisplayInfo *info = find_display(dpy);
+ register xDbeGetBackBufferAttributesReq *req;
+ xDbeGetBackBufferAttributesReply rep;
+ XdbeBackBufferAttributes *attr;
+
+ DbeCheckExtension(dpy, info, (XdbeBackBufferAttributes *)NULL);
+
+ if (!(attr =
+ (XdbeBackBufferAttributes *)Xmalloc(sizeof(XdbeBackBufferAttributes)))) {
+ return NULL;
+ }
+
+ LockDisplay(dpy);
+ DbeGetReq(DbeGetBackBufferAttributes, req, info);
+ req->buffer = buffer;
+
+ if (!_XReply (dpy, (xReply *) &rep, 0, xTrue)) {
+ UnlockDisplay (dpy);
+ SyncHandle ();
+ Xfree(attr);
+ return NULL;
+ }
+ attr->window = rep.attributes;
+
+ UnlockDisplay (dpy);
+ SyncHandle ();
+
+ return attr;
+}
+
diff --git a/libXext/src/extutil.c b/libXext/src/extutil.c index ac861eaa4..144af9072 100644 --- a/libXext/src/extutil.c +++ b/libXext/src/extutil.c @@ -1,282 +1,282 @@ -/* - * $Xorg: extutil.c,v 1.4 2001/02/09 02:03:49 xorgcvs Exp $ - * -Copyright 1989, 1998 The Open Group - -Permission to use, copy, modify, distribute, and sell this software and its -documentation for any purpose is hereby granted without fee, provided that -the above copyright notice appear in all copies and that both that -copyright notice and this permission notice appear in supporting -documentation. - -The above copyright notice and this permission notice 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 NONINFRINGEMENT. IN NO EVENT SHALL THE -OPEN GROUP 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. - -Except as contained in this notice, the name of The Open Group shall not be -used in advertising or otherwise to promote the sale, use or other dealings -in this Software without prior written authorization from The Open Group. - * - * Author: Jim Fulton, MIT X Consortium - * - * - * Xlib Extension-Writing Utilities - * - * This package contains utilities for writing the client API for various - * protocol extensions. THESE INTERFACES ARE NOT PART OF THE X STANDARD AND - * ARE SUBJECT TO CHANGE! - * - * Routines include: - * - * XextCreateExtension called once per extension - * XextDestroyExtension if no longer using extension - * XextAddDisplay add another display - * XextRemoveDisplay remove a display - * XextFindDisplay is a display open - * - * In addition, the following Xlib-style interfaces are provided: - * - * XSetExtensionErrorHandler establish an extension error handler - * XMissingExtension raise an error about missing ext - */ -/* $XFree86: xc/lib/Xext/extutil.c,v 1.5 2002/10/16 00:37:27 dawes Exp $ */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include <stdio.h> -#include <X11/Xlibint.h> -#include <X11/extensions/Xext.h> -#include <X11/extensions/extutil.h> -#include <X11/extensions/ge.h> - -/* defined in Xge.c */ -extern Bool -xgeExtRegister(Display* dpy, int extension, XExtensionHooks* callbacks); - -/* - * XextCreateExtension - return an extension descriptor containing context - * information for this extension. This object is passed to all Xext - * routines. - */ -XExtensionInfo *XextCreateExtension (void) -{ - register XExtensionInfo *info = - (XExtensionInfo *) Xmalloc (sizeof (XExtensionInfo)); - - if (info) { - info->head = NULL; - info->cur = NULL; - info->ndisplays = 0; - } - return info; -} - - -/* - * XextDestroyExtension - free memory the given extension descriptor - */ -void XextDestroyExtension (XExtensionInfo *info) -{ - info->head = NULL; /* to catch refs after this */ - info->cur = NULL; - info->ndisplays = 0; - XFree ((char *) info); -} - - - -/* - * XextAddDisplay - add a display to this extension - */ -XExtDisplayInfo *XextAddDisplay ( - XExtensionInfo *extinfo, - Display *dpy, - char *ext_name, - XExtensionHooks *hooks, - int nevents, - XPointer data) -{ - XExtDisplayInfo *dpyinfo; - - dpyinfo = (XExtDisplayInfo *) Xmalloc (sizeof (XExtDisplayInfo)); - if (!dpyinfo) return NULL; - dpyinfo->display = dpy; - dpyinfo->data = data; - dpyinfo->codes = XInitExtension (dpy, ext_name); - - /* - * if the server has the extension, then we can initialize the - * appropriate function vectors - */ - if (dpyinfo->codes) { - int i, j; - - for (i = 0, j = dpyinfo->codes->first_event; i < nevents; i++, j++) { - XESetWireToEvent (dpy, j, hooks->wire_to_event); - XESetEventToWire (dpy, j, hooks->event_to_wire); - } - - /* register extension for XGE */ - if (strcmp(ext_name, GE_NAME)) - xgeExtRegister(dpy, dpyinfo->codes->major_opcode, hooks); - - if (hooks->create_gc) - XESetCreateGC (dpy, dpyinfo->codes->extension, hooks->create_gc); - if (hooks->copy_gc) - XESetCopyGC (dpy, dpyinfo->codes->extension, hooks->copy_gc); - if (hooks->flush_gc) - XESetFlushGC (dpy, dpyinfo->codes->extension, hooks->flush_gc); - if (hooks->free_gc) - XESetFreeGC (dpy, dpyinfo->codes->extension, hooks->free_gc); - if (hooks->create_font) - XESetCreateFont (dpy, dpyinfo->codes->extension, hooks->create_font); - if (hooks->free_font) - XESetFreeFont (dpy, dpyinfo->codes->extension, hooks->free_font); - if (hooks->close_display) - XESetCloseDisplay (dpy, dpyinfo->codes->extension, - hooks->close_display); - if (hooks->error) - XESetError (dpy, dpyinfo->codes->extension, hooks->error); - if (hooks->error_string) - XESetErrorString (dpy, dpyinfo->codes->extension, - hooks->error_string); - } else if (hooks->close_display) { - /* The server doesn't have this extension. - * Use a private Xlib-internal extension to hang the close_display - * hook on so that the "cache" (extinfo->cur) is properly cleaned. - * (XBUG 7955) - */ - XExtCodes *codes = XAddExtension(dpy); - if (!codes) { - XFree(dpyinfo); - return NULL; - } - XESetCloseDisplay (dpy, codes->extension, hooks->close_display); - } - - /* - * now, chain it onto the list - */ - _XLockMutex(_Xglobal_lock); - dpyinfo->next = extinfo->head; - extinfo->head = dpyinfo; - extinfo->cur = dpyinfo; - extinfo->ndisplays++; - _XUnlockMutex(_Xglobal_lock); - return dpyinfo; -} - - -/* - * XextRemoveDisplay - remove the indicated display from the extension object - */ -int XextRemoveDisplay (XExtensionInfo *extinfo, Display *dpy) -{ - XExtDisplayInfo *dpyinfo, *prev; - - /* - * locate this display and its back link so that it can be removed - */ - _XLockMutex(_Xglobal_lock); - prev = NULL; - for (dpyinfo = extinfo->head; dpyinfo; dpyinfo = dpyinfo->next) { - if (dpyinfo->display == dpy) break; - prev = dpyinfo; - } - if (!dpyinfo) { - _XUnlockMutex(_Xglobal_lock); - return 0; /* hmm, actually an error */ - } - - /* - * remove the display from the list; handles going to zero - */ - if (prev) - prev->next = dpyinfo->next; - else - extinfo->head = dpyinfo->next; - - extinfo->ndisplays--; - if (dpyinfo == extinfo->cur) extinfo->cur = NULL; /* flush cache */ - _XUnlockMutex(_Xglobal_lock); - - Xfree ((char *) dpyinfo); - return 1; -} - - -/* - * XextFindDisplay - look for a display in this extension; keeps a cache - * of the most-recently used for efficiency. - */ -XExtDisplayInfo *XextFindDisplay (XExtensionInfo *extinfo, Display *dpy) -{ - register XExtDisplayInfo *dpyinfo; - - /* - * see if this was the most recently accessed display - */ - if ((dpyinfo = extinfo->cur)&& dpyinfo->display == dpy) return dpyinfo; - - - /* - * look for display in list - */ - _XLockMutex(_Xglobal_lock); - for (dpyinfo = extinfo->head; dpyinfo; dpyinfo = dpyinfo->next) { - if (dpyinfo->display == dpy) { - extinfo->cur = dpyinfo; /* cache most recently used */ - _XUnlockMutex(_Xglobal_lock); - return dpyinfo; - } - } - _XUnlockMutex(_Xglobal_lock); - - return NULL; -} - - - -static int _default_exterror (Display *dpy, _Xconst char *ext_name, _Xconst char *reason) -{ - fprintf (stderr, "Xlib: extension \"%s\" %s on display \"%s\".\n", - ext_name, reason, DisplayString(dpy)); - return 0; -} - - -/* - * XSetExtensionErrorHandler - sets the handler that gets called when a - * requested extension is referenced. This should eventually move into Xlib. - */ - -extern XextErrorHandler _XExtensionErrorFunction; - -XextErrorHandler XSetExtensionErrorHandler (XextErrorHandler handler) -{ - XextErrorHandler oldhandler = _XExtensionErrorFunction; - - _XExtensionErrorFunction = (handler ? handler : - _default_exterror); - return oldhandler; -} - - -/* - * XMissingExtension - call the extension error handler - */ -int XMissingExtension (Display *dpy, _Xconst char *ext_name) -{ - XextErrorHandler func = (_XExtensionErrorFunction ? - _XExtensionErrorFunction : _default_exterror); - - if (!ext_name) ext_name = X_EXTENSION_UNKNOWN; - return (*func) (dpy, ext_name, X_EXTENSION_MISSING); -} +/*
+ * $Xorg: extutil.c,v 1.4 2001/02/09 02:03:49 xorgcvs Exp $
+ *
+Copyright 1989, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice 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 NONINFRINGEMENT. IN NO EVENT SHALL THE
+OPEN GROUP 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.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+ *
+ * Author: Jim Fulton, MIT X Consortium
+ *
+ *
+ * Xlib Extension-Writing Utilities
+ *
+ * This package contains utilities for writing the client API for various
+ * protocol extensions. THESE INTERFACES ARE NOT PART OF THE X STANDARD AND
+ * ARE SUBJECT TO CHANGE!
+ *
+ * Routines include:
+ *
+ * XextCreateExtension called once per extension
+ * XextDestroyExtension if no longer using extension
+ * XextAddDisplay add another display
+ * XextRemoveDisplay remove a display
+ * XextFindDisplay is a display open
+ *
+ * In addition, the following Xlib-style interfaces are provided:
+ *
+ * XSetExtensionErrorHandler establish an extension error handler
+ * XMissingExtension raise an error about missing ext
+ */
+/* $XFree86: xc/lib/Xext/extutil.c,v 1.5 2002/10/16 00:37:27 dawes Exp $ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdio.h>
+#include <X11/Xlibint.h>
+#include <X11/extensions/Xext.h>
+#include <X11/extensions/extutil.h>
+#include <X11/extensions/ge.h>
+
+/* defined in Xge.c */
+extern _X_HIDDEN Bool
+xgeExtRegister(Display* dpy, int extension, XExtensionHooks* callbacks);
+
+/*
+ * XextCreateExtension - return an extension descriptor containing context
+ * information for this extension. This object is passed to all Xext
+ * routines.
+ */
+XExtensionInfo *XextCreateExtension (void)
+{
+ register XExtensionInfo *info =
+ (XExtensionInfo *) Xmalloc (sizeof (XExtensionInfo));
+
+ if (info) {
+ info->head = NULL;
+ info->cur = NULL;
+ info->ndisplays = 0;
+ }
+ return info;
+}
+
+
+/*
+ * XextDestroyExtension - free memory the given extension descriptor
+ */
+void XextDestroyExtension (XExtensionInfo *info)
+{
+ info->head = NULL; /* to catch refs after this */
+ info->cur = NULL;
+ info->ndisplays = 0;
+ XFree ((char *) info);
+}
+
+
+
+/*
+ * XextAddDisplay - add a display to this extension
+ */
+XExtDisplayInfo *XextAddDisplay (
+ XExtensionInfo *extinfo,
+ Display *dpy,
+ char *ext_name,
+ XExtensionHooks *hooks,
+ int nevents,
+ XPointer data)
+{
+ XExtDisplayInfo *dpyinfo;
+
+ dpyinfo = (XExtDisplayInfo *) Xmalloc (sizeof (XExtDisplayInfo));
+ if (!dpyinfo) return NULL;
+ dpyinfo->display = dpy;
+ dpyinfo->data = data;
+ dpyinfo->codes = XInitExtension (dpy, ext_name);
+
+ /*
+ * if the server has the extension, then we can initialize the
+ * appropriate function vectors
+ */
+ if (dpyinfo->codes) {
+ int i, j;
+
+ for (i = 0, j = dpyinfo->codes->first_event; i < nevents; i++, j++) {
+ XESetWireToEvent (dpy, j, hooks->wire_to_event);
+ XESetEventToWire (dpy, j, hooks->event_to_wire);
+ }
+
+ /* register extension for XGE */
+ if (strcmp(ext_name, GE_NAME))
+ xgeExtRegister(dpy, dpyinfo->codes->major_opcode, hooks);
+
+ if (hooks->create_gc)
+ XESetCreateGC (dpy, dpyinfo->codes->extension, hooks->create_gc);
+ if (hooks->copy_gc)
+ XESetCopyGC (dpy, dpyinfo->codes->extension, hooks->copy_gc);
+ if (hooks->flush_gc)
+ XESetFlushGC (dpy, dpyinfo->codes->extension, hooks->flush_gc);
+ if (hooks->free_gc)
+ XESetFreeGC (dpy, dpyinfo->codes->extension, hooks->free_gc);
+ if (hooks->create_font)
+ XESetCreateFont (dpy, dpyinfo->codes->extension, hooks->create_font);
+ if (hooks->free_font)
+ XESetFreeFont (dpy, dpyinfo->codes->extension, hooks->free_font);
+ if (hooks->close_display)
+ XESetCloseDisplay (dpy, dpyinfo->codes->extension,
+ hooks->close_display);
+ if (hooks->error)
+ XESetError (dpy, dpyinfo->codes->extension, hooks->error);
+ if (hooks->error_string)
+ XESetErrorString (dpy, dpyinfo->codes->extension,
+ hooks->error_string);
+ } else if (hooks->close_display) {
+ /* The server doesn't have this extension.
+ * Use a private Xlib-internal extension to hang the close_display
+ * hook on so that the "cache" (extinfo->cur) is properly cleaned.
+ * (XBUG 7955)
+ */
+ XExtCodes *codes = XAddExtension(dpy);
+ if (!codes) {
+ XFree(dpyinfo);
+ return NULL;
+ }
+ XESetCloseDisplay (dpy, codes->extension, hooks->close_display);
+ }
+
+ /*
+ * now, chain it onto the list
+ */
+ _XLockMutex(_Xglobal_lock);
+ dpyinfo->next = extinfo->head;
+ extinfo->head = dpyinfo;
+ extinfo->cur = dpyinfo;
+ extinfo->ndisplays++;
+ _XUnlockMutex(_Xglobal_lock);
+ return dpyinfo;
+}
+
+
+/*
+ * XextRemoveDisplay - remove the indicated display from the extension object
+ */
+int XextRemoveDisplay (XExtensionInfo *extinfo, Display *dpy)
+{
+ XExtDisplayInfo *dpyinfo, *prev;
+
+ /*
+ * locate this display and its back link so that it can be removed
+ */
+ _XLockMutex(_Xglobal_lock);
+ prev = NULL;
+ for (dpyinfo = extinfo->head; dpyinfo; dpyinfo = dpyinfo->next) {
+ if (dpyinfo->display == dpy) break;
+ prev = dpyinfo;
+ }
+ if (!dpyinfo) {
+ _XUnlockMutex(_Xglobal_lock);
+ return 0; /* hmm, actually an error */
+ }
+
+ /*
+ * remove the display from the list; handles going to zero
+ */
+ if (prev)
+ prev->next = dpyinfo->next;
+ else
+ extinfo->head = dpyinfo->next;
+
+ extinfo->ndisplays--;
+ if (dpyinfo == extinfo->cur) extinfo->cur = NULL; /* flush cache */
+ _XUnlockMutex(_Xglobal_lock);
+
+ Xfree ((char *) dpyinfo);
+ return 1;
+}
+
+
+/*
+ * XextFindDisplay - look for a display in this extension; keeps a cache
+ * of the most-recently used for efficiency.
+ */
+XExtDisplayInfo *XextFindDisplay (XExtensionInfo *extinfo, Display *dpy)
+{
+ register XExtDisplayInfo *dpyinfo;
+
+ /*
+ * see if this was the most recently accessed display
+ */
+ if ((dpyinfo = extinfo->cur)&& dpyinfo->display == dpy) return dpyinfo;
+
+
+ /*
+ * look for display in list
+ */
+ _XLockMutex(_Xglobal_lock);
+ for (dpyinfo = extinfo->head; dpyinfo; dpyinfo = dpyinfo->next) {
+ if (dpyinfo->display == dpy) {
+ extinfo->cur = dpyinfo; /* cache most recently used */
+ _XUnlockMutex(_Xglobal_lock);
+ return dpyinfo;
+ }
+ }
+ _XUnlockMutex(_Xglobal_lock);
+
+ return NULL;
+}
+
+
+
+static int _default_exterror (Display *dpy, _Xconst char *ext_name, _Xconst char *reason)
+{
+ fprintf (stderr, "Xlib: extension \"%s\" %s on display \"%s\".\n",
+ ext_name, reason, DisplayString(dpy));
+ return 0;
+}
+
+
+/*
+ * XSetExtensionErrorHandler - sets the handler that gets called when a
+ * requested extension is referenced. This should eventually move into Xlib.
+ */
+
+extern XextErrorHandler _XExtensionErrorFunction;
+
+XextErrorHandler XSetExtensionErrorHandler (XextErrorHandler handler)
+{
+ XextErrorHandler oldhandler = _XExtensionErrorFunction;
+
+ _XExtensionErrorFunction = (handler ? handler :
+ _default_exterror);
+ return oldhandler;
+}
+
+
+/*
+ * XMissingExtension - call the extension error handler
+ */
+int XMissingExtension (Display *dpy, _Xconst char *ext_name)
+{
+ XextErrorHandler func = (_XExtensionErrorFunction ?
+ _XExtensionErrorFunction : _default_exterror);
+
+ if (!ext_name) ext_name = X_EXTENSION_UNKNOWN;
+ return (*func) (dpy, ext_name, X_EXTENSION_MISSING);
+}
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