added ClearBuffer

2 files changed, 47 insertions, 4 deletions

diff --git a/xc/include/extensions/multibuf.h b/xc/include/extensions/multibuf.h
index 92a0c86ff..2c1f8c2eb 100644
--- a/xc/include/extensions/multibuf.h
+++ b/xc/include/extensions/multibuf.h
@@ -1,5 +1,5 @@
 /*
- * $XConsortium: multibuf.h,v 1.6 89/10/03 17:58:08 jim Exp $
+ * $XConsortium: multibuf.h,v 1.7 89/10/04 15:45:53 jim Exp $
  *
  * Copyright 1989 Massachusetts Institute of Technology
  *
@@ -39,6 +39,7 @@
 #define X_MbufGetBufferAttributes	7
 #define X_MbufGetBufferInfo		8
 #define X_MbufCreateStereoWindow	9
+#define X_MbufClearBuffer		10
 
 /*
  * update_action field
@@ -263,6 +264,21 @@ void XmbufChangeBufferAttributes (dpy, buffer, valuemask, attributes)
 	limited to the event_mask.
 
 
+void XmbufClearBuffer (dpy, buffer, x, y, width, height, exposures)
+    Display *dpy;
+    Multibuffer buffer;
+    int x, y;
+    unsigned int width, height;
+    Bool exposures;
+
+	Paints the specified rectangle of the buffer with the corresponding
+	area from the background (if not-None) of the window associated with 
+	the buffer.  If width is zero, it is replaced by the width of the
+	buffer minus x.  If height is zero, it is replaced by the height of
+	the buffer minus y.  If exposures is True, an exposure event is 
+	generated for the rectangle.
+
+
 Status XmbufGetScreenInfo (dpy, drawable, nmono_return, mono_info_return,
 			   nstereo, stereo_info_return)
     Display *dpy;
@@ -316,6 +332,7 @@ extern Status XmbufGetWindowAttributes ();   /* get extension window attrs */
 extern void XmbufChangeWindowAttributes ();  /* set extension window attrs */
 extern Status XmbufGetBufferAttributes ();   /* get buffer attrs */
 extern void XmbufChangeBufferAttributes ();  /* set buffer attrs */
+extern void XmbufClearBuffer ();	/* clear buffer to background */
 extern Status XmbufGetScreenInfo ();	/* get mono and stereo parameters */
 extern Window XmbufCreateStereoWindow ();/* stereo version of XCreateWindow */
 
diff --git a/xc/include/extensions/multibufst.h b/xc/include/extensions/multibufst.h
index f070e7058..16e705123 100644
--- a/xc/include/extensions/multibufst.h
+++ b/xc/include/extensions/multibufst.h
@@ -1,5 +1,5 @@
 /*
- * $XConsortium: multibufst.h,v 1.3 89/10/03 17:22:45 jim Exp $
+ * $XConsortium: multibufst.h,v 1.4 89/10/04 15:45:50 jim Exp $
  *
  * Copyright 1989 Massachusetts Institute of Technology
  *
@@ -23,6 +23,9 @@
  * Author:  Keith Packard, MIT X Consortium
  */
 
+#ifndef _MULTIBUFST_H_
+#define _MULTIBUFST_H_
+
 /*
  * Protocol requests constants and alignment values
  * These would really be in Multi-Buffering's X.h and Xproto.h equivalents
@@ -40,6 +43,8 @@
 	req->mbufReqType = X_/**/name;
 #endif
 
+#define Multibuffer CARD32
+
 typedef struct {
 	CARD32	visualID B32;		/* associated visual */
 	CARD16	maxBuffers B16;		/* maximum supported buffers */
@@ -245,8 +250,8 @@ typedef struct {
     CARD8	depth;
     Window	wid B32;
     Window	parent B32;
-    CARD32	left B32;	/* associated buffers */
-    CARD32	right B32;
+    Multibuffer	left B32;	/* associated buffers */
+    Multibuffer	right B32;
     INT16	x B16;
     INT16	y B16;
     CARD16	width B16;
@@ -257,3 +262,24 @@ typedef struct {
     CARD32	mask B32;
 } xMbufCreateStereoWindowReq;		/* followed by value list */
 #define sz_xMbufCreateStereoWindowReq 44
+
+
+typedef struct {
+    CARD8	reqType;	/* always codes->major_opcode */
+    CARD8	mbufReqType;	/* always X_MbufClearBuffer */
+    CARD16	length B16;
+    Multibuffer	buffer B32;
+    INT16	x B16;
+    INT16	y B16;
+    CARD16	width B16;
+    CARD16	height B16;
+    CARD8	exposures;
+    CARD8	unused0;
+    CARD8	unused1;
+    CARD8	unused2;
+} xMbufClearBufferReq;
+#define sz_xMbufClearBufferReq 20
+
+#undef Multibuffer
+
+#endif /* _MULTIBUFST_H_ */