--- /dev/null
+/*
+ * $XConsortium: extutil.h,v 1.15 94/10/07 15:36:33 kaleb Exp $
+ *
+Copyright (c) 1989 X Consortium
+
+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 THE
+X CONSORTIUM 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 X Consortium 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 X Consortium.
+ *
+ * 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!
+ */
+
+#ifndef _EXTUTIL_H_
+#define _EXTUTIL_H_
+
+/*
+ * We need to keep a list of open displays since the Xlib display list isn't
+ * public. We also have to per-display info in a separate block since it isn't
+ * stored directly in the Display structure.
+ */
+typedef struct _XExtDisplayInfo {
+ struct _XExtDisplayInfo *next; /* keep a linked list */
+ Display *display; /* which display this is */
+ XExtCodes *codes; /* the extension protocol codes */
+ XPointer data; /* extra data for extension to use */
+} XExtDisplayInfo;
+
+typedef struct _XExtensionInfo {
+ XExtDisplayInfo *head; /* start of list */
+ XExtDisplayInfo *cur; /* most recently used */
+ int ndisplays; /* number of displays */
+} XExtensionInfo;
+
+typedef struct _XExtensionHooks {
+ int (*create_gc)(
+#if NeedNestedPrototypes
+ Display* /* display */,
+ GC /* gc */,
+ XExtCodes* /* codes */
+#endif
+);
+ int (*copy_gc)(
+#if NeedNestedPrototypes
+ Display* /* display */,
+ GC /* gc */,
+ XExtCodes* /* codes */
+#endif
+);
+ int (*flush_gc)(
+#if NeedNestedPrototypes
+ Display* /* display */,
+ GC /* gc */,
+ XExtCodes* /* codes */
+#endif
+);
+ int (*free_gc)(
+#if NeedNestedPrototypes
+ Display* /* display */,
+ GC /* gc */,
+ XExtCodes* /* codes */
+#endif
+);
+ int (*create_font)(
+#if NeedNestedPrototypes
+ Display* /* display */,
+ XFontStruct* /* fs */,
+ XExtCodes* /* codes */
+#endif
+);
+ int (*free_font)(
+#if NeedNestedPrototypes
+ Display* /* display */,
+ XFontStruct* /* fs */,
+ XExtCodes* /* codes */
+#endif
+);
+ int (*close_display)(
+#if NeedNestedPrototypes
+ Display* /* display */,
+ XExtCodes* /* codes */
+#endif
+);
+ Bool (*wire_to_event)(
+#if NeedNestedPrototypes
+ Display* /* display */,
+ XEvent* /* re */,
+ xEvent* /* event */
+#endif
+);
+ Status (*event_to_wire)(
+#if NeedNestedPrototypes
+ Display* /* display */,
+ XEvent* /* re */,
+ xEvent* /* event */
+#endif
+);
+ int (*error)(
+#if NeedNestedPrototypes
+ Display* /* display */,
+ xError* /* err */,
+ XExtCodes* /* codes */,
+ int* /* ret_code */
+#endif
+);
+ char *(*error_string)(
+#if NeedNestedPrototypes
+ Display* /* display */,
+ int /* code */,
+ XExtCodes* /* codes */,
+ char* /* buffer */,
+ int /* nbytes */
+#endif
+);
+} XExtensionHooks;
+
+extern XExtensionInfo *XextCreateExtension(
+#if NeedFunctionPrototypes
+ void
+#endif
+);
+extern void XextDestroyExtension(
+#if NeedFunctionPrototypes
+ XExtensionInfo* /* info */
+#endif
+);
+extern XExtDisplayInfo *XextAddDisplay(
+#if NeedFunctionPrototypes
+ XExtensionInfo* /* extinfo */,
+ Display* /* dpy */,
+ char* /* ext_name */,
+ XExtensionHooks* /* hooks */,
+ int /* nevents */,
+ XPointer /* data */
+#endif
+);
+extern int XextRemoveDisplay(
+#if NeedFunctionPrototypes
+ XExtensionInfo* /* extinfo */,
+ Display* /* dpy */
+#endif
+);
+extern XExtDisplayInfo *XextFindDisplay(
+#if NeedFunctionPrototypes
+ XExtensionInfo* /* extinfo */,
+ Display* /* dpy */
+#endif
+);
+
+#define XextHasExtension(i) ((i) && ((i)->codes))
+#define XextCheckExtension(dpy,i,name,val) \
+ if (!XextHasExtension(i)) { XMissingExtension (dpy, name); return val; }
+#define XextSimpleCheckExtension(dpy,i,name) \
+ if (!XextHasExtension(i)) { XMissingExtension (dpy, name); return; }
+
+
+/*
+ * helper macros to generate code that is common to all extensions; caller
+ * should prefix it with static if extension source is in one file; this
+ * could be a utility function, but have to stack 6 unused arguments for
+ * something that is called many, many times would be bad.
+ */
+#define XEXT_GENERATE_FIND_DISPLAY(proc,extinfo,extname,hooks,nev,data) \
+XExtDisplayInfo *proc (dpy) \
+ register Display *dpy; \
+{ \
+ XExtDisplayInfo *dpyinfo; \
+ if (!extinfo) { if (!(extinfo = XextCreateExtension())) return NULL; } \
+ if (!(dpyinfo = XextFindDisplay (extinfo, dpy))) \
+ dpyinfo = XextAddDisplay (extinfo,dpy,extname,hooks,nev,data); \
+ return dpyinfo; \
+}
+
+#define XEXT_GENERATE_CLOSE_DISPLAY(proc,extinfo) \
+int proc (dpy, codes) \
+ Display *dpy; \
+ XExtCodes *codes; \
+{ \
+ return XextRemoveDisplay (extinfo, dpy); \
+}
+
+#define XEXT_GENERATE_ERROR_STRING(proc,extname,nerr,errl) \
+char *proc (dpy, code, codes, buf, n) \
+ Display *dpy; \
+ int code; \
+ XExtCodes *codes; \
+ char *buf; \
+ int n; \
+{ \
+ code -= codes->first_error; \
+ if (code >= 0 && code < nerr) { \
+ char tmp[256]; \
+ sprintf (tmp, "%s.%d", extname, code); \
+ XGetErrorDatabaseText (dpy, "XProtoError", tmp, errl[code], buf, n); \
+ return buf; \
+ } \
+ return (char *)0; \
+}
+
+#endif
projects / rdpsrv / blobdiff