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, 602 insertions, 0 deletions

diff --git a/nx-X11/programs/Xserver/hw/dmx/dmxgcops.c b/nx-X11/programs/Xserver/hw/dmx/dmxgcops.c
new file mode 100644
index 000000000..75d9dfb73
--- /dev/null
+++ b/nx-X11/programs/Xserver/hw/dmx/dmxgcops.c
@@ -0,0 +1,602 @@
+/* $XFree86$ */
+/*
+ * Copyright 2001-2004 Red Hat Inc., Durham, North Carolina.
+ *
+ * All Rights Reserved.
+ *
+ * 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 on 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 (including the
+ * next paragraph) 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
+ * NON-INFRINGEMENT.  IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
+ * 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.
+ */
+
+/*
+ * Authors:
+ *   Kevin E. Martin <kem@redhat.com>
+ *
+ */
+
+/** \file
+ * This file provides support for GC operations. */
+
+#ifdef HAVE_DMX_CONFIG_H
+#include <dmx-config.h>
+#endif
+
+#include "dmx.h"
+#include "dmxsync.h"
+#include "dmxgc.h"
+#include "dmxgcops.h"
+#include "dmxwindow.h"
+#include "dmxpixmap.h"
+
+#include "mi.h"
+#include "gcstruct.h"
+#include "pixmapstr.h"
+#include "dixfontstr.h"
+
+#include "panoramiXsrv.h"
+
+#define DMX_GCOPS_SET_DRAWABLE(_pDraw, _draw)				\
+do {									\
+    if ((_pDraw)->type == DRAWABLE_WINDOW) {				\
+	dmxWinPrivPtr  pWinPriv =					\
+	    DMX_GET_WINDOW_PRIV((WindowPtr)(_pDraw));			\
+	(_draw) = (Drawable)pWinPriv->window;				\
+    } else {								\
+	dmxPixPrivPtr  pPixPriv =					\
+	    DMX_GET_PIXMAP_PRIV((PixmapPtr)(_pDraw));			\
+	(_draw) = (Drawable)pPixPriv->pixmap;				\
+    }									\
+} while (0)
+
+#define DMX_GCOPS_OFFSCREEN(_pDraw)					\
+    (!dmxScreens[(_pDraw)->pScreen->myNum].beDisplay ||			\
+     (dmxOffScreenOpt &&						\
+      (_pDraw)->type == DRAWABLE_WINDOW &&				\
+      (DMX_GET_WINDOW_PRIV((WindowPtr)(_pDraw))->offscreen ||		\
+       !DMX_GET_WINDOW_PRIV((WindowPtr)(_pDraw))->window)))
+
+/** Fill spans -- this function should never be called. */
+void dmxFillSpans(DrawablePtr pDrawable, GCPtr pGC,
+		  int nInit, DDXPointPtr pptInit, int *pwidthInit,
+		  int fSorted)
+{
+    /* Error -- this should never happen! */
+}
+
+/** Set spans -- this function should never be called. */
+void dmxSetSpans(DrawablePtr pDrawable, GCPtr pGC,
+		 char *psrc, DDXPointPtr ppt, int *pwidth, int nspans,
+		 int fSorted)
+{
+    /* Error -- this should never happen! */
+}
+
+/** Transfer \a pBits image to back-end server associated with \a
+ *  pDrawable's screen.  If primitive subdivision optimization is
+ *  enabled, then only transfer the sections of \a pBits that are
+ *  visible (i.e., not-clipped) to the back-end server. */
+void dmxPutImage(DrawablePtr pDrawable, GCPtr pGC,
+		 int depth, int x, int y, int w, int h,
+		 int leftPad, int format, char *pBits)
+{
+    DMXScreenInfo *dmxScreen = &dmxScreens[pDrawable->pScreen->myNum];
+    dmxGCPrivPtr   pGCPriv = DMX_GET_GC_PRIV(pGC);
+    XImage        *img;
+
+    if (DMX_GCOPS_OFFSCREEN(pDrawable)) return;
+
+    img = XCreateImage(dmxScreen->beDisplay,
+		       dmxScreen->beVisuals[dmxScreen->beDefVisualIndex].visual,
+		       depth, format, leftPad, pBits, w, h,
+		       BitmapPad(dmxScreen->beDisplay),
+		       (format == ZPixmap) ?
+		       PixmapBytePad(w, depth) : BitmapBytePad(w+leftPad));
+
+    if (img) {
+	Drawable draw;
+
+	DMX_GCOPS_SET_DRAWABLE(pDrawable, draw);
+
+	if (dmxSubdividePrimitives && pGC->pCompositeClip) {
+	    RegionPtr  pSubImages;
+	    RegionPtr  pClip;
+	    BoxRec     box;
+	    BoxPtr     pBox;
+	    int        nBox;
+
+	    box.x1 = x;
+	    box.y1 = y;
+	    box.x2 = x + w;
+	    box.y2 = y + h;
+	    pSubImages = REGION_CREATE(pGC->pScreen, &box, 1);
+
+	    pClip = REGION_CREATE(pGC->pScreen, NullBox, 1);
+	    REGION_COPY(pGC->pScreen, pClip, pGC->pCompositeClip);
+	    REGION_TRANSLATE(pGC->pScreen, pClip,
+			     -pDrawable->x, -pDrawable->y);
+	    REGION_INTERSECT(pGC->pScreen, pSubImages, pSubImages, pClip);
+
+	    nBox = REGION_NUM_RECTS(pSubImages);
+	    pBox = REGION_RECTS(pSubImages);
+
+	    while (nBox--) {
+		XPutImage(dmxScreen->beDisplay, draw, pGCPriv->gc, img,
+			  pBox->x1 - box.x1,
+			  pBox->y1 - box.y1,
+			  pBox->x1,
+			  pBox->y1,
+			  pBox->x2 - pBox->x1,
+			  pBox->y2 - pBox->y1);
+		pBox++;
+	    }
+            REGION_DESTROY(pGC->pScreen, pClip);
+            REGION_DESTROY(pGC->pScreen, pSubImages);
+	} else {
+	    XPutImage(dmxScreen->beDisplay, draw, pGCPriv->gc,
+		      img, 0, 0, x, y, w, h);
+	}
+	XFree(img);             /* Use XFree instead of XDestroyImage
+                                 * because pBits is passed in from the
+                                 * caller. */
+
+	dmxSync(dmxScreen, FALSE);
+    } else {
+	/* Error -- this should not happen! */
+    }
+}
+
+/** Copy area from \a pSrc drawable to \a pDst drawable on the back-end
+ *  server associated with \a pSrc drawable's screen.  If the offscreen
+ *  optimization is enabled, only copy when both \a pSrc and \a pDst are
+ *  at least partially visible. */
+RegionPtr dmxCopyArea(DrawablePtr pSrc, DrawablePtr pDst, GCPtr pGC,
+		      int srcx, int srcy, int w, int h, int dstx, int dsty)
+{
+    DMXScreenInfo *dmxScreen = &dmxScreens[pSrc->pScreen->myNum];
+    dmxGCPrivPtr   pGCPriv = DMX_GET_GC_PRIV(pGC);
+    Drawable       srcDraw, dstDraw;
+
+    if (DMX_GCOPS_OFFSCREEN(pSrc) || DMX_GCOPS_OFFSCREEN(pDst))
+	return miHandleExposures(pSrc, pDst, pGC, srcx, srcy, w, h,
+				 dstx, dsty, 0L);
+
+    DMX_GCOPS_SET_DRAWABLE(pSrc, srcDraw);
+    DMX_GCOPS_SET_DRAWABLE(pDst, dstDraw);
+
+    XCopyArea(dmxScreen->beDisplay, srcDraw, dstDraw, pGCPriv->gc,
+	      srcx, srcy, w, h, dstx, dsty);
+    dmxSync(dmxScreen, FALSE);
+
+    return miHandleExposures(pSrc, pDst, pGC, srcx, srcy, w, h,
+			     dstx, dsty, 0L);
+}
+
+/** Copy plane number \a bitPlane from \a pSrc drawable to \a pDst
+ *  drawable on the back-end server associated with \a pSrc drawable's
+ *  screen.  If the offscreen optimization is enabled, only copy when
+ *  both \a pSrc and \a pDst are at least partially visible. */
+RegionPtr dmxCopyPlane(DrawablePtr pSrc, DrawablePtr pDst, GCPtr pGC,
+		       int srcx, int srcy, int width, int height,
+		       int dstx, int dsty, unsigned long bitPlane)
+{
+    DMXScreenInfo *dmxScreen = &dmxScreens[pSrc->pScreen->myNum];
+    dmxGCPrivPtr   pGCPriv = DMX_GET_GC_PRIV(pGC);
+    Drawable       srcDraw, dstDraw;
+
+    if (DMX_GCOPS_OFFSCREEN(pSrc) || DMX_GCOPS_OFFSCREEN(pDst))
+	return miHandleExposures(pSrc, pDst, pGC, srcx, srcy, width, height,
+				 dstx, dsty, bitPlane);
+
+    DMX_GCOPS_SET_DRAWABLE(pSrc, srcDraw);
+    DMX_GCOPS_SET_DRAWABLE(pDst, dstDraw);
+
+    XCopyPlane(dmxScreen->beDisplay, srcDraw, dstDraw, pGCPriv->gc,
+	       srcx, srcy, width, height, dstx, dsty, bitPlane);
+    dmxSync(dmxScreen, FALSE);
+
+    return miHandleExposures(pSrc, pDst, pGC, srcx, srcy, width, height,
+			     dstx, dsty, bitPlane);
+}
+
+/** Render list of points, \a pptInit in \a pDrawable on the back-end
+ *  server associated with \a pDrawable's screen.  If the offscreen
+ *  optimization is enabled, only draw when \a pDrawable is at least
+ *  partially visible. */
+void dmxPolyPoint(DrawablePtr pDrawable, GCPtr pGC,
+		  int mode, int npt, DDXPointPtr pptInit)
+{
+    DMXScreenInfo *dmxScreen = &dmxScreens[pDrawable->pScreen->myNum];
+    dmxGCPrivPtr   pGCPriv = DMX_GET_GC_PRIV(pGC);
+    Drawable       draw;
+
+    if (DMX_GCOPS_OFFSCREEN(pDrawable)) return;
+
+    DMX_GCOPS_SET_DRAWABLE(pDrawable, draw);
+
+    XDrawPoints(dmxScreen->beDisplay, draw, pGCPriv->gc,
+		(XPoint *)pptInit, npt, mode);
+    dmxSync(dmxScreen, FALSE);
+}
+
+/** Render list of connected lines, \a pptInit in \a pDrawable on the
+ *  back-end server associated with \a pDrawable's screen.  If the
+ *  offscreen optimization is enabled, only draw when \a pDrawable is at
+ *  least partially visible. */
+void dmxPolylines(DrawablePtr pDrawable, GCPtr pGC,
+		  int mode, int npt, DDXPointPtr pptInit)
+{
+    DMXScreenInfo *dmxScreen = &dmxScreens[pDrawable->pScreen->myNum];
+    dmxGCPrivPtr   pGCPriv = DMX_GET_GC_PRIV(pGC);
+    Drawable       draw;
+
+    if (DMX_GCOPS_OFFSCREEN(pDrawable)) return;
+
+    DMX_GCOPS_SET_DRAWABLE(pDrawable, draw);
+
+    XDrawLines(dmxScreen->beDisplay, draw, pGCPriv->gc,
+	       (XPoint *)pptInit, npt, mode);
+    dmxSync(dmxScreen, FALSE);
+}
+
+/** Render list of disjoint segments, \a pSegs in \a pDrawable on the
+ *  back-end server associated with \a pDrawable's screen.  If the
+ *  offscreen optimization is enabled, only draw when \a pDrawable is at
+ *  least partially visible. */
+void dmxPolySegment(DrawablePtr pDrawable, GCPtr pGC,
+		    int nseg, xSegment *pSegs)
+{
+    DMXScreenInfo *dmxScreen = &dmxScreens[pDrawable->pScreen->myNum];
+    dmxGCPrivPtr   pGCPriv = DMX_GET_GC_PRIV(pGC);
+    Drawable       draw;
+
+    if (DMX_GCOPS_OFFSCREEN(pDrawable)) return;
+
+    DMX_GCOPS_SET_DRAWABLE(pDrawable, draw);
+
+    XDrawSegments(dmxScreen->beDisplay, draw, pGCPriv->gc,
+		  (XSegment *)pSegs, nseg);
+    dmxSync(dmxScreen, FALSE);
+}
+
+/** Render list of rectangle outlines, \a pRects in \a pDrawable on the
+ *  back-end server associated with \a pDrawable's screen.  If the
+ *  offscreen optimization is enabled, only draw when \a pDrawable is at
+ *  least partially visible. */
+void dmxPolyRectangle(DrawablePtr pDrawable, GCPtr pGC,
+		      int nrects, xRectangle *pRects)
+{
+    DMXScreenInfo *dmxScreen = &dmxScreens[pDrawable->pScreen->myNum];
+    dmxGCPrivPtr   pGCPriv = DMX_GET_GC_PRIV(pGC);
+    Drawable       draw;
+
+    if (DMX_GCOPS_OFFSCREEN(pDrawable)) return;
+
+    DMX_GCOPS_SET_DRAWABLE(pDrawable, draw);
+
+    XDrawRectangles(dmxScreen->beDisplay, draw, pGCPriv->gc,
+		    (XRectangle *)pRects, nrects);
+
+    dmxSync(dmxScreen, FALSE);
+}
+
+/** Render list of arc outlines, \a parcs in \a pDrawable on the
+ *  back-end server associated with \a pDrawable's screen.  If the
+ *  offscreen optimization is enabled, only draw when \a pDrawable is at
+ *  least partially visible. */
+void dmxPolyArc(DrawablePtr pDrawable, GCPtr pGC,
+		int narcs, xArc *parcs)
+{
+    DMXScreenInfo *dmxScreen = &dmxScreens[pDrawable->pScreen->myNum];
+    dmxGCPrivPtr   pGCPriv = DMX_GET_GC_PRIV(pGC);
+    Drawable       draw;
+
+    if (DMX_GCOPS_OFFSCREEN(pDrawable)) return;
+
+    DMX_GCOPS_SET_DRAWABLE(pDrawable, draw);
+
+    XDrawArcs(dmxScreen->beDisplay, draw, pGCPriv->gc,
+	      (XArc *)parcs, narcs);
+    dmxSync(dmxScreen, FALSE);
+}
+
+/** Render a filled polygons in \a pDrawable on the back-end server
+ *  associated with \a pDrawable's screen.  If the offscreen
+ *  optimization is enabled, only draw when \a pDrawable is at least
+ *  partially visible. */
+void dmxFillPolygon(DrawablePtr pDrawable, GCPtr pGC,
+		    int shape, int mode, int count, DDXPointPtr pPts)
+{
+    DMXScreenInfo *dmxScreen = &dmxScreens[pDrawable->pScreen->myNum];
+    dmxGCPrivPtr   pGCPriv = DMX_GET_GC_PRIV(pGC);
+    Drawable       draw;
+
+    if (DMX_GCOPS_OFFSCREEN(pDrawable)) return;
+
+    DMX_GCOPS_SET_DRAWABLE(pDrawable, draw);
+
+    XFillPolygon(dmxScreen->beDisplay, draw, pGCPriv->gc,
+		 (XPoint *)pPts, count, shape, mode);
+    dmxSync(dmxScreen, FALSE);
+}
+
+/** Render list of filled rectangles, \a prectInit in \a pDrawable on
+ *  the back-end server associated with \a pDrawable's screen.  If the
+ *  offscreen optimization is enabled, only draw when \a pDrawable is at
+ *  least partially visible. */
+void dmxPolyFillRect(DrawablePtr pDrawable, GCPtr pGC,
+		     int nrectFill, xRectangle *prectInit)
+{
+    DMXScreenInfo *dmxScreen = &dmxScreens[pDrawable->pScreen->myNum];
+    dmxGCPrivPtr   pGCPriv = DMX_GET_GC_PRIV(pGC);
+    Drawable       draw;
+
+    if (DMX_GCOPS_OFFSCREEN(pDrawable)) return;
+
+    DMX_GCOPS_SET_DRAWABLE(pDrawable, draw);
+
+    XFillRectangles(dmxScreen->beDisplay, draw, pGCPriv->gc,
+		    (XRectangle *)prectInit, nrectFill);
+    dmxSync(dmxScreen, FALSE);
+}
+
+/** Render list of filled arcs, \a parcs in \a pDrawable on the back-end
+ *  server associated with \a pDrawable's screen.  If the offscreen
+ *  optimization is enabled, only draw when \a pDrawable is at least
+ *  partially visible. */
+void dmxPolyFillArc(DrawablePtr pDrawable, GCPtr pGC,
+		    int narcs, xArc *parcs)
+{
+    DMXScreenInfo *dmxScreen = &dmxScreens[pDrawable->pScreen->myNum];
+    dmxGCPrivPtr   pGCPriv = DMX_GET_GC_PRIV(pGC);
+    Drawable       draw;
+
+    if (DMX_GCOPS_OFFSCREEN(pDrawable)) return;
+
+    DMX_GCOPS_SET_DRAWABLE(pDrawable, draw);
+
+    XFillArcs(dmxScreen->beDisplay, draw, pGCPriv->gc,
+	      (XArc *)parcs, narcs);
+    dmxSync(dmxScreen, FALSE);
+}
+
+/** Render string of 8-bit \a chars (foreground only) in \a pDrawable on
+ *  the back-end server associated with \a pDrawable's screen.  If the
+ *  offscreen optimization is enabled, only draw when \a pDrawable is at
+ *  least partially visible. */
+int dmxPolyText8(DrawablePtr pDrawable, GCPtr pGC,
+		 int x, int y, int count, char *chars)
+{
+    DMXScreenInfo *dmxScreen = &dmxScreens[pDrawable->pScreen->myNum];
+    dmxGCPrivPtr   pGCPriv = DMX_GET_GC_PRIV(pGC);
+    unsigned long  n, i;
+    int            w;
+    CharInfoPtr    charinfo[255];
+    Drawable       draw;
+
+    GetGlyphs(pGC->font, (unsigned long)count, (unsigned char *)chars,
+	      Linear8Bit, &n, charinfo);
+
+    /* Calculate text width */
+    w = 0;
+    for (i = 0; i < n; i++) w += charinfo[i]->metrics.characterWidth;
+
+    if (n != 0 && !DMX_GCOPS_OFFSCREEN(pDrawable)) {
+	DMX_GCOPS_SET_DRAWABLE(pDrawable, draw);
+
+	XDrawString(dmxScreen->beDisplay, draw, pGCPriv->gc,
+		    x, y, chars, count);
+	dmxSync(dmxScreen, FALSE);
+    }
+
+    return x+w;
+}
+
+/** Render string of 16-bit \a chars (foreground only) in \a pDrawable
+ *  on the back-end server associated with \a pDrawable's screen.  If
+ *  the offscreen optimization is enabled, only draw when \a pDrawable
+ *  is at least partially visible. */
+int dmxPolyText16(DrawablePtr pDrawable, GCPtr pGC,
+		  int x, int y, int count, unsigned short *chars)
+{
+    DMXScreenInfo *dmxScreen = &dmxScreens[pDrawable->pScreen->myNum];
+    dmxGCPrivPtr   pGCPriv = DMX_GET_GC_PRIV(pGC);
+    unsigned long  n, i;
+    int            w;
+    CharInfoPtr    charinfo[255];
+    Drawable       draw;
+
+    GetGlyphs(pGC->font, (unsigned long)count, (unsigned char *)chars,
+	      (FONTLASTROW(pGC->font) == 0) ? Linear16Bit : TwoD16Bit,
+	      &n, charinfo);
+
+    /* Calculate text width */
+    w = 0;
+    for (i = 0; i < n; i++) w += charinfo[i]->metrics.characterWidth;
+
+    if (n != 0 && !DMX_GCOPS_OFFSCREEN(pDrawable)) {
+	DMX_GCOPS_SET_DRAWABLE(pDrawable, draw);
+
+	XDrawString16(dmxScreen->beDisplay, draw, pGCPriv->gc,
+		      x, y, (XChar2b *)chars, count);
+	dmxSync(dmxScreen, FALSE);
+    }
+
+    return x+w;
+}
+
+/** Render string of 8-bit \a chars (both foreground and background) in
+ *  \a pDrawable on the back-end server associated with \a pDrawable's
+ *  screen.  If the offscreen optimization is enabled, only draw when \a
+ *  pDrawable is at least partially visible. */
+void dmxImageText8(DrawablePtr pDrawable, GCPtr pGC,
+		   int x, int y, int count, char *chars)
+{
+    DMXScreenInfo *dmxScreen = &dmxScreens[pDrawable->pScreen->myNum];
+    dmxGCPrivPtr   pGCPriv = DMX_GET_GC_PRIV(pGC);
+    Drawable       draw;
+
+    if (DMX_GCOPS_OFFSCREEN(pDrawable)) return;
+
+    DMX_GCOPS_SET_DRAWABLE(pDrawable, draw);
+
+    XDrawImageString(dmxScreen->beDisplay, draw, pGCPriv->gc,
+		     x, y, chars, count);
+    dmxSync(dmxScreen, FALSE);
+}
+
+/** Render string of 16-bit \a chars (both foreground and background) in
+ *  \a pDrawable on the back-end server associated with \a pDrawable's
+ *  screen.  If the offscreen optimization is enabled, only draw when \a
+ *  pDrawable is at least partially visible. */
+void dmxImageText16(DrawablePtr pDrawable, GCPtr pGC,
+		    int x, int y, int count, unsigned short *chars)
+{
+    DMXScreenInfo *dmxScreen = &dmxScreens[pDrawable->pScreen->myNum];
+    dmxGCPrivPtr   pGCPriv = DMX_GET_GC_PRIV(pGC);
+    Drawable       draw;
+
+    if (DMX_GCOPS_OFFSCREEN(pDrawable)) return;
+
+    DMX_GCOPS_SET_DRAWABLE(pDrawable, draw);
+
+    XDrawImageString16(dmxScreen->beDisplay, draw, pGCPriv->gc,
+		       x, y, (XChar2b *)chars, count);
+    dmxSync(dmxScreen, FALSE);
+}
+
+/** Image Glyph Blt -- this function should never be called. */
+void dmxImageGlyphBlt(DrawablePtr pDrawable, GCPtr pGC,
+		      int x, int y, unsigned int nglyph,
+		      CharInfoPtr *ppci, pointer pglyphBase)
+{
+    /* Error -- this should never happen! */
+}
+
+/** Poly Glyph Blt -- this function should never be called. */
+void dmxPolyGlyphBlt(DrawablePtr pDrawable, GCPtr pGC,
+		     int x, int y, unsigned int nglyph,
+		     CharInfoPtr *ppci, pointer pglyphBase)
+{
+    /* Error -- this should never happen! */
+}
+
+/** Push Pixels -- this function should never be called. */
+void dmxPushPixels(GCPtr pGC, PixmapPtr pBitMap, DrawablePtr pDst,
+		   int w, int h, int x, int y)
+{
+    /* Error -- this should never happen! */
+}
+
+/**********************************************************************
+ * Miscellaneous drawing commands
+ */
+
+/** When Xinerama is active, the client pixmaps are always obtained from
+ * screen 0.  When screen 0 is detached, the pixmaps must be obtained
+ * from any other screen that is not detached.  Usually, this is screen
+ * 1. */
+static DMXScreenInfo *dmxFindAlternatePixmap(DrawablePtr pDrawable, XID *draw)
+{
+#ifdef PANORAMIX
+    PanoramiXRes  *pXinPix;
+    int           i;
+    DMXScreenInfo *dmxScreen;
+            
+    if (noPanoramiXExtension)               return NULL;
+    if (pDrawable->type != DRAWABLE_PIXMAP) return NULL;
+    
+    if (!(pXinPix = (PanoramiXRes *)LookupIDByType(pDrawable->id, XRT_PIXMAP)))
+        return NULL;
+
+    for (i = 1; i < PanoramiXNumScreens; i++) {
+        dmxScreen = &dmxScreens[i];
+        if (dmxScreen->beDisplay) {
+            PixmapPtr     pSrc;
+            dmxPixPrivPtr pSrcPriv;
+            
+            pSrc = (PixmapPtr)LookupIDByType(pXinPix->info[i].id,
+                                             RT_PIXMAP);
+            pSrcPriv = DMX_GET_PIXMAP_PRIV(pSrc);
+            if (pSrcPriv->pixmap) {
+                *draw = pSrcPriv->pixmap;
+                return dmxScreen;
+            }
+        }
+    }
+#endif
+    return NULL;
+}
+
+/** Get an image from the back-end server associated with \a pDrawable's
+ *  screen.  If \a pDrawable is a window, it must be viewable to get an
+ *  image from it.  If it is not viewable, then get the image from the
+ *  first ancestor of \a pDrawable that is viewable.  If no viewable
+ *  ancestor is found, then simply return without getting an image.  */
+void dmxGetImage(DrawablePtr pDrawable, int sx, int sy, int w, int h,
+		 unsigned int format, unsigned long planeMask, char *pdstLine)
+{
+    DMXScreenInfo *dmxScreen = &dmxScreens[pDrawable->pScreen->myNum];
+    XImage        *img;
+    Drawable       draw;
+
+    /* Cannot get image from unviewable window */
+    if (pDrawable->type == DRAWABLE_WINDOW) {
+	WindowPtr pWindow = (WindowPtr)pDrawable;
+	if (!pWindow->viewable) {
+	    while (!pWindow->viewable && pWindow->parent) {
+		sx += pWindow->origin.x - wBorderWidth(pWindow);
+		sx += pWindow->origin.y - wBorderWidth(pWindow);
+		pWindow = pWindow->parent;
+	    }
+	    if (!pWindow->viewable) {
+		return;
+	    }
+	}
+	DMX_GCOPS_SET_DRAWABLE(&pWindow->drawable, draw);
+	if (DMX_GCOPS_OFFSCREEN(&pWindow->drawable))
+	    return;
+    } else {
+	DMX_GCOPS_SET_DRAWABLE(pDrawable, draw);
+	if (DMX_GCOPS_OFFSCREEN(pDrawable)) {
+            /* Try to find the pixmap on a non-detached Xinerama screen */
+            dmxScreen = dmxFindAlternatePixmap(pDrawable, &draw);
+            if (!dmxScreen) return;
+        }
+    }
+
+    img = XGetImage(dmxScreen->beDisplay, draw,
+		    sx, sy, w, h, planeMask, format);
+    if (img) {
+	int len = img->bytes_per_line * img->height;
+	memmove(pdstLine, img->data, len);
+	XDestroyImage(img);
+    }
+
+    dmxSync(dmxScreen, FALSE);
+}
+
+/** Get Spans -- this function should never be called. */
+void dmxGetSpans(DrawablePtr pDrawable, int wMax,
+		 DDXPointPtr ppt, int *pwidth, int nspans,
+		 char *pdstStart)
+{
+    /* Error -- this should never happen! */
+}