1 files changed, 140 insertions, 0 deletions
diff --git a/xorg-server/hw/xnest/Pixmap.c b/xorg-server/hw/xnest/Pixmap.c
new file mode 100644
index 000000000..04311966d
--- /dev/null
+++ b/xorg-server/hw/xnest/Pixmap.c
@@ -0,0 +1,140 @@
+/*
+
+Copyright 1993 by Davor Matic
+
+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.  Davor Matic makes no representations about
+the suitability of this software for any purpose.  It is provided "as
+is" without express or implied warranty.
+
+*/
+
+#ifdef HAVE_XNEST_CONFIG_H
+#include <xnest-config.h>
+#endif
+
+#include <X11/X.h>
+#include <X11/Xproto.h>
+#include "regionstr.h"
+#include "pixmapstr.h"
+#include "scrnintstr.h"
+#include "regionstr.h"
+#include "gc.h"
+#include "servermd.h"
+#include "privates.h"
+#include "mi.h"
+
+#include "Xnest.h"
+
+#include "Display.h"
+#include "Screen.h"
+#include "XNPixmap.h"
+
+DevPrivateKey xnestPixmapPrivateKey = &xnestPixmapPrivateKey;
+
+PixmapPtr
+xnestCreatePixmap(ScreenPtr pScreen, int width, int height, int depth,
+		  unsigned usage_hint)
+{
+  PixmapPtr pPixmap;
+
+  pPixmap = AllocatePixmap(pScreen, sizeof(xnestPrivPixmap));
+  if (!pPixmap)
+    return NullPixmap;
+  pPixmap->drawable.type = DRAWABLE_PIXMAP;
+  pPixmap->drawable.class = 0;
+  pPixmap->drawable.depth = depth;
+  pPixmap->drawable.bitsPerPixel = depth;
+  pPixmap->drawable.id = 0;
+  pPixmap->drawable.x = 0;
+  pPixmap->drawable.y = 0;
+  pPixmap->drawable.width = width;
+  pPixmap->drawable.height = height;
+  pPixmap->drawable.pScreen = pScreen;
+  pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER;
+  pPixmap->refcnt = 1;
+  pPixmap->devKind = PixmapBytePad(width, depth);
+  pPixmap->usage_hint = usage_hint;
+  dixSetPrivate(&pPixmap->devPrivates, xnestPixmapPrivateKey,
+		(char *)pPixmap + pScreen->totalPixmapSize);
+  if (width && height)
+      xnestPixmapPriv(pPixmap)->pixmap = 
+	  XCreatePixmap(xnestDisplay, 
+			xnestDefaultWindows[pScreen->myNum],
+			width, height, depth);
+  else
+      xnestPixmapPriv(pPixmap)->pixmap = 0;
+  
+  return pPixmap;
+}
+
+Bool
+xnestDestroyPixmap(PixmapPtr pPixmap)
+{
+  if(--pPixmap->refcnt)
+    return TRUE;
+  XFreePixmap(xnestDisplay, xnestPixmap(pPixmap));
+  dixFreePrivates(pPixmap->devPrivates);
+  xfree(pPixmap);
+  return TRUE;
+}
+
+RegionPtr
+xnestPixmapToRegion(PixmapPtr pPixmap)
+{
+  XImage *ximage;
+  register RegionPtr pReg, pTmpReg;
+  register int x, y;
+  unsigned long previousPixel, currentPixel;
+  BoxRec Box;
+  Bool overlap;
+  
+  ximage = XGetImage(xnestDisplay, xnestPixmap(pPixmap), 0, 0,
+		     pPixmap->drawable.width, pPixmap->drawable.height,
+		     1, XYPixmap);
+  
+  pReg = REGION_CREATE(pPixmap->drawable.pScreen, NULL, 1);
+  pTmpReg = REGION_CREATE(pPixmap->drawable.pScreen, NULL, 1);
+  if(!pReg || !pTmpReg) {
+      XDestroyImage(ximage);
+      return NullRegion;
+  }
+  
+  for (y = 0; y < pPixmap->drawable.height; y++) {
+    Box.y1 = y;
+    Box.y2 = y + 1;
+    previousPixel = 0L;
+    for (x = 0; x < pPixmap->drawable.width; x++) {
+      currentPixel = XGetPixel(ximage, x, y);
+      if (previousPixel != currentPixel) {
+	if (previousPixel == 0L) { 
+	  /* left edge */
+	  Box.x1 = x;
+	}
+	else if (currentPixel == 0L) {
+	  /* right edge */
+	  Box.x2 = x;
+	  REGION_RESET(pPixmap->drawable.pScreen, pTmpReg, &Box);
+	  REGION_APPEND(pPixmap->drawable.pScreen, pReg, pTmpReg);
+	}
+	previousPixel = currentPixel;
+      }
+    }
+    if (previousPixel != 0L) {
+      /* right edge because of the end of pixmap */
+      Box.x2 = pPixmap->drawable.width;
+      REGION_RESET(pPixmap->drawable.pScreen, pTmpReg, &Box);
+      REGION_APPEND(pPixmap->drawable.pScreen, pReg, pTmpReg);
+    }
+  }
+  
+  REGION_DESTROY(pPixmap->drawable.pScreen, pTmpReg);
+  XDestroyImage(ximage);
+
+  REGION_VALIDATE(pPixmap->drawable.pScreen, pReg, &overlap);
+
+  return(pReg);
+}