Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 365 insertions, 0 deletions

diff --git a/nx-X11/lib/Xdamage/Xdamage.c b/nx-X11/lib/Xdamage/Xdamage.c
new file mode 100644
index 000000000..48ffa68a9
--- /dev/null
+++ b/nx-X11/lib/Xdamage/Xdamage.c
@@ -0,0 +1,365 @@
+/*
+ * $Id: Xdamage.c,v 1.3 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 HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include "xdamageint.h"
+
+XDamageExtInfo XDamageExtensionInfo;
+
+const char XDamageExtensionName[] = DAMAGE_NAME;
+
+static int
+XDamageCloseDisplay (Display *dpy, XExtCodes *codes);
+    
+static Bool
+XDamageWireToEvent(Display *dpy, XEvent *event, xEvent *wire);
+
+static Status
+XDamageEventToWire(Display *dpy, XEvent *event, xEvent *wire);
+
+/*
+ * XDamageExtAddDisplay - add a display to this extension. (Replaces
+ * XextAddDisplay)
+ */
+static XDamageExtDisplayInfo *
+XDamageExtAddDisplay (XDamageExtInfo	*extinfo,
+                      Display		*dpy,
+                      const char	*ext_name)
+{
+    XDamageExtDisplayInfo    *info;
+    int			    ev;
+
+    info = (XDamageExtDisplayInfo *) Xmalloc (sizeof (XDamageExtDisplayInfo));
+    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) {
+	xDamageQueryVersionReply	rep;
+	xDamageQueryVersionReq	*req;
+        XESetCloseDisplay (dpy, info->codes->extension, 
+                           XDamageCloseDisplay);
+	for (ev = info->codes->first_event;
+	     ev < info->codes->first_event + XDamageNumberEvents;
+	     ev++)
+	{
+	    XESetWireToEvent (dpy, ev, XDamageWireToEvent);
+	    XESetEventToWire (dpy, ev, XDamageEventToWire);
+	}
+	/*
+	 * Get the version info
+	 */
+	LockDisplay (dpy);
+	GetReq (DamageQueryVersion, req);
+	req->reqType = info->codes->major_opcode;
+	req->damageReqType = X_DamageQueryVersion;
+	req->majorVersion = DAMAGE_MAJOR;
+	req->minorVersion = DAMAGE_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, XDamageCloseDisplay);
+    }
+
+    /*
+     * 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;
+}
+
+
+/*
+ * XDamageExtRemoveDisplay - remove the indicated display from the
+ * extension object. (Replaces XextRemoveDisplay.)
+ */
+static int 
+XDamageExtRemoveDisplay (XDamageExtInfo *extinfo, Display *dpy)
+{
+    XDamageExtDisplayInfo *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;
+}
+
+/*
+ * XDamageExtFindDisplay - look for a display in this extension; keeps a
+ * cache of the most-recently used for efficiency. (Replaces
+ * XextFindDisplay.)
+ */
+static XDamageExtDisplayInfo *
+XDamageExtFindDisplay (XDamageExtInfo *extinfo, 
+		      Display	    *dpy)
+{
+    XDamageExtDisplayInfo *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;
+}
+
+XDamageExtDisplayInfo *
+XDamageFindDisplay (Display *dpy)
+{
+    XDamageExtDisplayInfo *info;
+
+    info = XDamageExtFindDisplay (&XDamageExtensionInfo, dpy);
+    if (!info)
+	info = XDamageExtAddDisplay (&XDamageExtensionInfo, dpy, 
+				    XDamageExtensionName);
+    return info;
+}
+    
+static int
+XDamageCloseDisplay (Display *dpy, XExtCodes *codes)
+{
+    return XDamageExtRemoveDisplay (&XDamageExtensionInfo, dpy);
+}
+
+static Bool
+XDamageWireToEvent(Display *dpy, XEvent *event, xEvent *wire)
+{
+    XDamageExtDisplayInfo *info = XDamageFindDisplay(dpy);
+
+    XDamageCheckExtension(dpy, info, False);
+
+    switch ((wire->u.u.type & 0x7F) - info->codes->first_event)
+    {
+    case XDamageNotify: {
+	XDamageNotifyEvent *aevent = (XDamageNotifyEvent *) event;
+	xDamageNotifyEvent *awire = (xDamageNotifyEvent *) wire;
+
+	aevent->type = awire->type & 0x7F;
+	aevent->serial = _XSetLastRequestRead(dpy,
+					      (xGenericReply *) wire);
+	aevent->send_event = (awire->type & 0x80) != 0;
+	aevent->display = dpy;
+	aevent->drawable = awire->drawable;
+	aevent->damage = awire->damage;
+	aevent->level = awire->level;
+	aevent->timestamp = awire->timestamp;
+	aevent->area.x = awire->area.x;
+	aevent->area.y = awire->area.y;
+	aevent->area.width = awire->area.width;
+	aevent->area.height = awire->area.height;
+	aevent->geometry.x = awire->geometry.x;
+	aevent->geometry.y = awire->geometry.y;
+	aevent->geometry.width = awire->geometry.width;
+	aevent->geometry.height = awire->geometry.height;
+	return True;
+    }
+    }
+    return False;
+}
+
+static Status
+XDamageEventToWire(Display *dpy, XEvent *event, xEvent *wire)
+{
+    XDamageExtDisplayInfo *info = XDamageFindDisplay(dpy);
+
+    XDamageCheckExtension(dpy, info, False);
+
+    switch ((event->type & 0x7F) - info->codes->first_event)
+    {
+    case XDamageNotify: {
+	XDamageNotifyEvent *aevent;
+	xDamageNotifyEvent *awire;
+	awire = (xDamageNotifyEvent *) wire;
+	aevent = (XDamageNotifyEvent *) event;
+	awire->type = aevent->type | (aevent->send_event ? 0x80 : 0);
+	awire->drawable = aevent->drawable;
+	awire->damage = aevent->damage;
+	awire->level = aevent->level;
+	awire->timestamp = aevent->timestamp;
+	awire->area.x = aevent->area.x;
+	awire->area.y = aevent->area.y;
+	awire->area.width = aevent->area.width;
+	awire->area.height = aevent->area.height;
+	awire->geometry.x = aevent->geometry.x;
+	awire->geometry.y = aevent->geometry.y;
+	awire->geometry.width = aevent->geometry.width;
+	awire->geometry.height = aevent->geometry.height;
+	return True;
+    }
+    }
+    return False;
+}
+
+Bool 
+XDamageQueryExtension (Display *dpy, int *event_basep, int *error_basep)
+{
+    XDamageExtDisplayInfo *info = XDamageFindDisplay (dpy);
+
+    if (XDamageHasExtension(info)) 
+    {
+	*event_basep = info->codes->first_event;
+	*error_basep = info->codes->first_error;
+	return True;
+    } 
+    else
+	return False;
+}
+
+Status 
+XDamageQueryVersion (Display *dpy,
+		    int	    *major_versionp,
+		    int	    *minor_versionp)
+{
+    XDamageExtDisplayInfo	*info = XDamageFindDisplay (dpy);
+
+    XDamageCheckExtension (dpy, info, 0);
+
+    *major_versionp = info->major_version;
+    *minor_versionp = info->minor_version;
+    UnlockDisplay (dpy);
+    SyncHandle ();
+    return 1;
+}
+
+Damage
+XDamageCreate (Display *dpy, Drawable drawable, int level)
+{
+    XDamageExtDisplayInfo	*info = XDamageFindDisplay (dpy);
+    xDamageCreateReq		*req;
+    Damage			damage;
+
+    XDamageCheckExtension (dpy, info, 0);
+    LockDisplay (dpy);
+    GetReq (DamageCreate, req);
+    req->reqType = info->codes->major_opcode;
+    req->damageReqType = X_DamageCreate;
+    req->damage = damage = XAllocID (dpy);
+    req->drawable = drawable;
+    req->level = level;
+    UnlockDisplay (dpy);
+    SyncHandle ();
+    return damage;
+}
+
+void
+XDamageDestroy (Display *dpy, Damage damage)
+{
+    XDamageExtDisplayInfo	*info = XDamageFindDisplay (dpy);
+    xDamageDestroyReq		*req;
+
+    XDamageSimpleCheckExtension (dpy, info);
+    LockDisplay (dpy);
+    GetReq (DamageDestroy, req);
+    req->reqType = info->codes->major_opcode;
+    req->damageReqType = X_DamageDestroy;
+    req->damage = damage;
+    UnlockDisplay (dpy);
+    SyncHandle ();
+}
+
+void
+XDamageSubtract (Display *dpy, Damage damage, 
+		 XserverRegion repair, XserverRegion parts)
+{
+    XDamageExtDisplayInfo	*info = XDamageFindDisplay (dpy);
+    xDamageSubtractReq		*req;
+
+    XDamageSimpleCheckExtension (dpy, info);
+    LockDisplay (dpy);
+    GetReq (DamageSubtract, req);
+    req->reqType = info->codes->major_opcode;
+    req->damageReqType = X_DamageSubtract;
+    req->damage = damage;
+    req->repair = repair;
+    req->parts = parts;
+    UnlockDisplay (dpy);
+    SyncHandle ();
+}