Merge branch 'nxagent'

1 files changed, 359 insertions, 0 deletions

diff --git a/nx-X11/programs/Xserver/hw/nxagent/NXcomposite.c b/nx-X11/programs/Xserver/hw/nxagent/NXcomposite.c
new file mode 100644
index 000000000..09bdaeb31
--- /dev/null
+++ b/nx-X11/programs/Xserver/hw/nxagent/NXcomposite.c
@@ -0,0 +1,359 @@
+#ifndef NXAGENT_UPGRADE
+
+/*
+ * $Id: Xcomposite.c,v 1.2 2005/07/03 07:00:56 daniels Exp $
+ *
+ * Copyright © 2003 Keith Packard
+ *
+ * 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, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Keith Packard makes no
+ * representations about the suitability of this software for any purpose.  It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD 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.
+ */
+
+#ifdef NXAGENT_SERVER
+
+#include "NXcompositeint.h"
+
+#else
+
+#include "compositeint.h"
+
+#endif
+
+XCompositeExtInfo XCompositeExtensionInfo;
+
+const char XCompositeExtensionName[] = COMPOSITE_NAME;
+
+/*
+ * XCompositeExtRemoveDisplay - remove the indicated display from the
+ * extension object. (Replaces XextRemoveDisplay.)
+ */
+static int 
+XCompositeExtRemoveDisplay (XCompositeExtInfo *extinfo, Display *dpy)
+{
+    XCompositeExtDisplayInfo *info, *prev;
+
+    /*
+     * locate this display and its back link so that it can be removed
+     */
+    _XLockMutex(_Xglobal_lock);
+    prev = NULL;
+    for (info = extinfo->head; info; info = info->next) {
+	if (info->display == dpy) break;
+	prev = info;
+    }
+    if (!info) {
+	_XUnlockMutex(_Xglobal_lock);
+	return 0;		/* hmm, actually an error */
+    }
+
+    /*
+     * remove the display from the list; handles going to zero
+     */
+    if (prev)
+	prev->next = info->next;
+    else
+	extinfo->head = info->next;
+
+    extinfo->ndisplays--;
+    if (info == extinfo->cur) extinfo->cur = NULL;  /* flush cache */
+    _XUnlockMutex(_Xglobal_lock);
+
+    Xfree ((char *) info);
+    return 1;
+}
+
+static int
+XCompositeCloseDisplay (Display *dpy, XExtCodes *codes)
+{
+    return XCompositeExtRemoveDisplay (&XCompositeExtensionInfo, dpy);
+}
+
+/*
+ * XCompositeExtAddDisplay - add a display to this extension. (Replaces
+ * XextAddDisplay)
+ */
+static XCompositeExtDisplayInfo *
+XCompositeExtAddDisplay (XCompositeExtInfo	*extinfo,
+			 Display		*dpy,
+			 const char		*ext_name)
+{
+    XCompositeExtDisplayInfo    *info;
+
+    #ifndef NXAGENT_SERVER
+
+    int			    ev;
+
+    #endif
+
+    info = (XCompositeExtDisplayInfo *) Xmalloc (sizeof (XCompositeExtDisplayInfo));
+    if (!info) return NULL;
+    info->display = dpy;
+
+    info->codes = XInitExtension (dpy, ext_name);
+
+    /*
+     * if the server has the extension, then we can initialize the 
+     * appropriate function vectors
+     */
+    if (info->codes) {
+	xCompositeQueryVersionReply	rep;
+	xCompositeQueryVersionReq	*req;
+        XESetCloseDisplay (dpy, info->codes->extension, 
+                           XCompositeCloseDisplay);
+	/*
+	 * Get the version info
+	 */
+	LockDisplay (dpy);
+	GetReq (CompositeQueryVersion, req);
+	req->reqType = info->codes->major_opcode;
+	req->compositeReqType = X_CompositeQueryVersion;
+	req->majorVersion = COMPOSITE_MAJOR;
+	req->minorVersion = COMPOSITE_MINOR;
+	if (!_XReply (dpy, (xReply *) &rep, 0, xTrue)) 
+	{
+	    UnlockDisplay (dpy);
+	    SyncHandle ();
+	    return 0;
+	}
+	info->major_version = rep.majorVersion;
+	info->minor_version = rep.minorVersion;
+	UnlockDisplay (dpy);
+    } else {
+	/* 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(info);
+	    return NULL;
+	}
+        XESetCloseDisplay (dpy, codes->extension, XCompositeCloseDisplay);
+    }
+
+    /*
+     * now, chain it onto the list
+     */
+    _XLockMutex(_Xglobal_lock);
+    info->next = extinfo->head;
+    extinfo->head = info;
+    extinfo->cur = info;
+    extinfo->ndisplays++;
+    _XUnlockMutex(_Xglobal_lock);
+    return info;
+}
+
+/*
+ * XCompositeExtFindDisplay - look for a display in this extension; keeps a
+ * cache of the most-recently used for efficiency. (Replaces
+ * XextFindDisplay.)
+ */
+static XCompositeExtDisplayInfo *
+XCompositeExtFindDisplay (XCompositeExtInfo *extinfo, 
+		      Display	    *dpy)
+{
+    XCompositeExtDisplayInfo *info;
+
+    /*
+     * see if this was the most recently accessed display
+     */
+    if ((info = extinfo->cur) && info->display == dpy) 
+	return info;
+
+    /*
+     * look for display in list
+     */
+    _XLockMutex(_Xglobal_lock);
+    for (info = extinfo->head; info; info = info->next) {
+	if (info->display == dpy) {
+	    extinfo->cur = info;     /* cache most recently used */
+	    _XUnlockMutex(_Xglobal_lock);
+	    return info;
+	}
+    }
+    _XUnlockMutex(_Xglobal_lock);
+
+    return NULL;
+}
+
+XCompositeExtDisplayInfo *
+XCompositeFindDisplay (Display *dpy)
+{
+    XCompositeExtDisplayInfo *info;
+
+    info = XCompositeExtFindDisplay (&XCompositeExtensionInfo, dpy);
+    if (!info)
+	info = XCompositeExtAddDisplay (&XCompositeExtensionInfo, dpy, 
+				    XCompositeExtensionName);
+    return info;
+}
+    
+
+Bool 
+XCompositeQueryExtension (Display *dpy, int *event_basep, int *error_basep)
+{
+    XCompositeExtDisplayInfo *info = XCompositeFindDisplay (dpy);
+
+    if (XCompositeHasExtension(info)) 
+    {
+	*event_basep = info->codes->first_event;
+	*error_basep = info->codes->first_error;
+	return True;
+    } 
+    else
+	return False;
+}
+
+Status 
+XCompositeQueryVersion (Display *dpy,
+		    int	    *major_versionp,
+		    int	    *minor_versionp)
+{
+    XCompositeExtDisplayInfo	*info = XCompositeFindDisplay (dpy);
+
+    XCompositeCheckExtension (dpy, info, 0);
+    *major_versionp = info->major_version;
+    *minor_versionp = info->minor_version;
+    UnlockDisplay (dpy);
+    SyncHandle ();
+    return 1;
+}
+
+int
+XCompositeVersion (void)
+{
+    return XCOMPOSITE_VERSION;
+}
+
+void
+XCompositeRedirectWindow (Display *dpy, Window window, int update)
+{
+    XCompositeExtDisplayInfo	    *info = XCompositeFindDisplay (dpy);
+    xCompositeRedirectWindowReq	    *req;
+
+    XCompositeSimpleCheckExtension (dpy, info);
+    LockDisplay (dpy);
+    GetReq (CompositeRedirectWindow, req);
+    req->reqType = info->codes->major_opcode;
+    req->compositeReqType = X_CompositeRedirectWindow;
+    req->window = window;
+    req->update = update;
+    UnlockDisplay (dpy);
+    SyncHandle ();
+}
+
+void
+XCompositeRedirectSubwindows (Display *dpy, Window window, int update)
+{
+    XCompositeExtDisplayInfo	    *info = XCompositeFindDisplay (dpy);
+    xCompositeRedirectSubwindowsReq *req;
+
+    XCompositeSimpleCheckExtension (dpy, info);
+    LockDisplay (dpy);
+    GetReq (CompositeRedirectSubwindows, req);
+    req->reqType = info->codes->major_opcode;
+    req->compositeReqType = X_CompositeRedirectSubwindows;
+    req->window = window;
+    req->update = update;
+    UnlockDisplay (dpy);
+    SyncHandle ();
+}
+
+void
+XCompositeUnredirectWindow (Display *dpy, Window window, int update)
+{
+    XCompositeExtDisplayInfo	    *info = XCompositeFindDisplay (dpy);
+    xCompositeUnredirectWindowReq   *req;
+
+    XCompositeSimpleCheckExtension (dpy, info);
+    LockDisplay (dpy);
+    GetReq (CompositeUnredirectWindow, req);
+    req->reqType = info->codes->major_opcode;
+    req->compositeReqType = X_CompositeUnredirectWindow;
+    req->window = window;
+    req->update = update;
+    UnlockDisplay (dpy);
+    SyncHandle ();
+}
+
+void
+XCompositeUnredirectSubwindows (Display *dpy, Window window, int update)
+{
+    XCompositeExtDisplayInfo		*info = XCompositeFindDisplay (dpy);
+    xCompositeUnredirectSubwindowsReq	*req;
+
+    XCompositeSimpleCheckExtension (dpy, info);
+    LockDisplay (dpy);
+    GetReq (CompositeUnredirectSubwindows, req);
+    req->reqType = info->codes->major_opcode;
+    req->compositeReqType = X_CompositeUnredirectSubwindows;
+    req->window = window;
+    req->update = update;
+    UnlockDisplay (dpy);
+    SyncHandle ();
+}
+
+XserverRegion
+XCompositeCreateRegionFromBorderClip (Display *dpy, Window window)
+{
+    XCompositeExtDisplayInfo		    *info = XCompositeFindDisplay (dpy);
+    xCompositeCreateRegionFromBorderClipReq *req;
+    XserverRegion			    region;
+
+    XCompositeCheckExtension (dpy, info, 0);
+    LockDisplay (dpy);
+    GetReq (CompositeCreateRegionFromBorderClip, req);
+    req->reqType = info->codes->major_opcode;
+    req->compositeReqType = X_CompositeCreateRegionFromBorderClip;
+    req->window = window;
+    region = req->region = XAllocID (dpy);
+    UnlockDisplay (dpy);
+    SyncHandle ();
+
+    #ifdef NXAGENT_SERVER
+
+    return region;
+
+    #else
+
+    return region;
+
+    #endif
+}
+
+Pixmap
+XCompositeNameWindowPixmap (Display *dpy, Window window)
+{
+    XCompositeExtDisplayInfo	    *info = XCompositeFindDisplay (dpy);
+    xCompositeNameWindowPixmapReq   *req;
+    Pixmap			    pixmap;
+
+    XCompositeCheckExtension (dpy, info, 0);
+    LockDisplay (dpy);
+    GetReq (CompositeNameWindowPixmap, req);
+    req->reqType = info->codes->major_opcode;
+    req->compositeReqType = X_CompositeNameWindowPixmap;
+    req->window = window;
+    pixmap = req->pixmap = XAllocID (dpy);
+    UnlockDisplay (dpy);
+    SyncHandle ();
+    return pixmap;
+}
+
+#endif /* #ifndef NXAGENT_UPGRADE */