svn merge -r588:HEAD ^/branches/released .

1 files changed, 874 insertions, 874 deletions

diff --git a/xorg-server/mi/midispcur.c b/xorg-server/mi/midispcur.c
index 904163091..d4b7f132b 100644
--- a/xorg-server/mi/midispcur.c
+++ b/xorg-server/mi/midispcur.c
@@ -1,874 +1,874 @@
-/*
- * midispcur.c
- *
- * machine independent cursor display routines
- */
-
-
-/*
-
-Copyright 1989, 1998  The Open Group
-
-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.
-
-The above copyright notice and this permission notice 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 NONINFRINGEMENT.  IN NO EVENT SHALL THE
-OPEN GROUP 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.
-
-Except as contained in this notice, the name of The Open Group shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from The Open Group.
-*/
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-# include   <X11/X.h>
-# include   "misc.h"
-# include   "input.h"
-# include   "cursorstr.h"
-# include   "windowstr.h"
-# include   "regionstr.h"
-# include   "dixstruct.h"
-# include   "scrnintstr.h"
-# include   "servermd.h"
-# include   "mipointer.h"
-# include   "misprite.h"
-# include   "gcstruct.h"
-
-#ifdef ARGB_CURSOR
-# include   "picturestr.h"
-#endif
-
-# include "inputstr.h"
-
-/* per-screen private data */
-static int miDCScreenKeyIndex;
-static DevPrivateKey miDCScreenKey = &miDCScreenKeyIndex;
-
-static Bool	miDCCloseScreen(int index, ScreenPtr pScreen);
-
-/* per device per-screen private data */
-static int miDCSpriteKeyIndex[MAXSCREENS];
-static DevPrivateKey miDCSpriteKey = miDCSpriteKeyIndex;
-
-typedef struct {
-    GCPtr	    pSourceGC, pMaskGC;
-    GCPtr	    pSaveGC, pRestoreGC;
-    GCPtr	    pMoveGC;
-    GCPtr	    pPixSourceGC, pPixMaskGC;
-    PixmapPtr	    pSave, pTemp;
-#ifdef ARGB_CURSOR
-    PicturePtr	    pRootPicture;
-    PicturePtr	    pTempPicture;
-#endif
-} miDCBufferRec, *miDCBufferPtr;
-
-#define MIDCBUFFER(dev, screen) \
- ((DevHasCursor(dev)) ? \
-  (miDCBufferPtr)dixLookupPrivate(&dev->devPrivates, miDCSpriteKey + (screen)->myNum) : \
-  (miDCBufferPtr)dixLookupPrivate(&dev->u.master->devPrivates, miDCSpriteKey + (screen)->myNum))
-
-/* 
- * The core pointer buffer will point to the index of the virtual core pointer
- * in the pCursorBuffers array. 
- */
-typedef struct {
-    CloseScreenProcPtr CloseScreen;
-} miDCScreenRec, *miDCScreenPtr;
-
-/* per-cursor per-screen private data */
-typedef struct {
-    PixmapPtr		sourceBits;	    /* source bits */
-    PixmapPtr		maskBits;	    /* mask bits */
-#ifdef ARGB_CURSOR
-    PicturePtr		pPicture;
-#endif
-} miDCCursorRec, *miDCCursorPtr;
-
-/*
- * sprite/cursor method table
- */
-
-static Bool	miDCRealizeCursor(ScreenPtr pScreen, CursorPtr pCursor);
-static Bool	miDCUnrealizeCursor(ScreenPtr pScreen, CursorPtr pCursor);
-static Bool	miDCPutUpCursor(DeviceIntPtr pDev, ScreenPtr pScreen, 
-                                CursorPtr pCursor, int x, int y, 
-                                unsigned long source, unsigned long mask);
-static Bool	miDCSaveUnderCursor(DeviceIntPtr pDev, ScreenPtr pScreen, 
-                                    int x, int y,
-				    int w, int h);
-static Bool	miDCRestoreUnderCursor(DeviceIntPtr pDev, ScreenPtr pScreen, 
-                                       int x, int y,
-				       int w, int h);
-static Bool	miDCMoveCursor(DeviceIntPtr pDev, ScreenPtr pScreen, 
-                               CursorPtr pCursor, int x, int y, 
-                               int w, int h, int dx, int dy,
-			       unsigned long source, unsigned long mask);
-static Bool	miDCChangeSave(DeviceIntPtr pDev, ScreenPtr pScreen, 
-                               int x, int y, int w, int h,	
-                               int dx, int dy);
-
-static Bool     miDCDeviceInitialize(DeviceIntPtr pDev, ScreenPtr pScreen);
-static void     miDCDeviceCleanup(DeviceIntPtr pDev, ScreenPtr pScreen);
-
-static miSpriteCursorFuncRec miDCFuncs = {
-    miDCRealizeCursor,
-    miDCUnrealizeCursor,
-    miDCPutUpCursor,
-    miDCSaveUnderCursor,
-    miDCRestoreUnderCursor,
-    miDCMoveCursor,
-    miDCChangeSave,
-    miDCDeviceInitialize,
-    miDCDeviceCleanup
-};
-
-Bool
-miDCInitialize (ScreenPtr pScreen, miPointerScreenFuncPtr screenFuncs)
-{
-    miDCScreenPtr   pScreenPriv;
-
-    pScreenPriv = xalloc (sizeof (miDCScreenRec));
-    if (!pScreenPriv)
-	return FALSE;
-
-
-    pScreenPriv->CloseScreen = pScreen->CloseScreen;
-    pScreen->CloseScreen = miDCCloseScreen;
-
-    dixSetPrivate(&pScreen->devPrivates, miDCScreenKey, pScreenPriv);
-
-    if (!miSpriteInitialize (pScreen, &miDCFuncs, screenFuncs))
-    {
-	xfree ((pointer) pScreenPriv);
-	return FALSE;
-    }
-    return TRUE;
-}
-
-static Bool
-miDCCloseScreen (int index, ScreenPtr pScreen)
-{
-    miDCScreenPtr   pScreenPriv;
-
-    pScreenPriv = (miDCScreenPtr)dixLookupPrivate(&pScreen->devPrivates,
-						  miDCScreenKey);
-    pScreen->CloseScreen = pScreenPriv->CloseScreen;
-    xfree ((pointer) pScreenPriv);
-    return (*pScreen->CloseScreen) (index, pScreen);
-}
-
-static Bool
-miDCRealizeCursor (ScreenPtr pScreen, CursorPtr pCursor)
-{
-    if (pCursor->bits->refcnt <= 1)
-	dixSetPrivate(&pCursor->bits->devPrivates, CursorScreenKey(pScreen), NULL);
-    return TRUE;
-}
-
-#ifdef ARGB_CURSOR
-
-static VisualPtr
-miDCGetWindowVisual (WindowPtr pWin)
-{
-    ScreenPtr	    pScreen = pWin->drawable.pScreen;
-    VisualID	    vid = wVisual (pWin);
-    int		    i;
-
-    for (i = 0; i < pScreen->numVisuals; i++)
-	if (pScreen->visuals[i].vid == vid)
-	    return &pScreen->visuals[i];
-    return 0;
-}
-
-static PicturePtr
-miDCMakePicture (PicturePtr *ppPicture, DrawablePtr pDraw, WindowPtr pWin)
-{
-    ScreenPtr	    pScreen = pDraw->pScreen;
-    VisualPtr	    pVisual;
-    PictFormatPtr   pFormat;
-    XID		    subwindow_mode = IncludeInferiors;
-    PicturePtr	    pPicture;
-    int		    error;
-    
-    pVisual = miDCGetWindowVisual (pWin);
-    if (!pVisual)
-	return 0;
-    pFormat = PictureMatchVisual (pScreen, pDraw->depth, pVisual);
-    if (!pFormat)
-	return 0;
-    pPicture = CreatePicture (0, pDraw, pFormat,
-			      CPSubwindowMode, &subwindow_mode,
-			      serverClient, &error);
-    *ppPicture = pPicture;
-    return pPicture;
-}
-#endif
-
-static miDCCursorPtr
-miDCRealize (ScreenPtr pScreen, CursorPtr pCursor)
-{
-    miDCCursorPtr   pPriv;
-    GCPtr	    pGC;
-    XID		    gcvals[3];
-
-    pPriv = xalloc (sizeof (miDCCursorRec));
-    if (!pPriv)
-	return NULL;
-#ifdef ARGB_CURSOR
-    if (pCursor->bits->argb)
-    {
-	PixmapPtr	pPixmap;
-	PictFormatPtr	pFormat;
-	int		error;
-	
-	pFormat = PictureMatchFormat (pScreen, 32, PICT_a8r8g8b8);
-	if (!pFormat)
-	{
-	    xfree ((pointer) pPriv);
-	    return NULL;
-	}
-	
-	pPriv->sourceBits = 0;
-	pPriv->maskBits = 0;
-	pPixmap = (*pScreen->CreatePixmap) (pScreen, pCursor->bits->width,
-					    pCursor->bits->height, 32,
-					    CREATE_PIXMAP_USAGE_SCRATCH);
-	if (!pPixmap)
-	{
-	    xfree ((pointer) pPriv);
-	    return NULL;
-	}
-	pGC = GetScratchGC (32, pScreen);
-	if (!pGC)
-	{
-	    (*pScreen->DestroyPixmap) (pPixmap);
-	    xfree ((pointer) pPriv);
-	    return NULL;
-	}
-	ValidateGC (&pPixmap->drawable, pGC);
-	(*pGC->ops->PutImage) (&pPixmap->drawable, pGC, 32,
-			       0, 0, pCursor->bits->width,
-			       pCursor->bits->height,
-			       0, ZPixmap, (char *) pCursor->bits->argb);
-	FreeScratchGC (pGC);
-	pPriv->pPicture = CreatePicture (0, &pPixmap->drawable,
-					pFormat, 0, 0, serverClient, &error);
-        (*pScreen->DestroyPixmap) (pPixmap);
-	if (!pPriv->pPicture)
-	{
-	    xfree ((pointer) pPriv);
-	    return NULL;
-	}
-	dixSetPrivate(&pCursor->bits->devPrivates, CursorScreenKey(pScreen), pPriv);
-	return pPriv;
-    }
-    pPriv->pPicture = 0;
-#endif
-    pPriv->sourceBits = (*pScreen->CreatePixmap) (pScreen, pCursor->bits->width, pCursor->bits->height, 1, 0);
-    if (!pPriv->sourceBits)
-    {
-	xfree ((pointer) pPriv);
-	return NULL;
-    }
-    pPriv->maskBits =  (*pScreen->CreatePixmap) (pScreen, pCursor->bits->width, pCursor->bits->height, 1, 0);
-    if (!pPriv->maskBits)
-    {
-	(*pScreen->DestroyPixmap) (pPriv->sourceBits);
-	xfree ((pointer) pPriv);
-	return NULL;
-    }
-    dixSetPrivate(&pCursor->bits->devPrivates, CursorScreenKey(pScreen), pPriv);
-
-    /* create the two sets of bits, clipping as appropriate */
-
-    pGC = GetScratchGC (1, pScreen);
-    if (!pGC)
-    {
-	(void) miDCUnrealizeCursor (pScreen, pCursor);
-	return NULL;
-    }
-
-    ValidateGC ((DrawablePtr)pPriv->sourceBits, pGC);
-    (*pGC->ops->PutImage) ((DrawablePtr)pPriv->sourceBits, pGC, 1,
-			   0, 0, pCursor->bits->width, pCursor->bits->height,
- 			   0, XYPixmap, (char *)pCursor->bits->source);
-    gcvals[0] = GXand;
-    ChangeGC (pGC, GCFunction, gcvals);
-    ValidateGC ((DrawablePtr)pPriv->sourceBits, pGC);
-    (*pGC->ops->PutImage) ((DrawablePtr)pPriv->sourceBits, pGC, 1,
-			   0, 0, pCursor->bits->width, pCursor->bits->height,
- 			   0, XYPixmap, (char *)pCursor->bits->mask);
-
-    /* mask bits -- pCursor->mask & ~pCursor->source */
-    gcvals[0] = GXcopy;
-    ChangeGC (pGC, GCFunction, gcvals);
-    ValidateGC ((DrawablePtr)pPriv->maskBits, pGC);
-    (*pGC->ops->PutImage) ((DrawablePtr)pPriv->maskBits, pGC, 1,
-			   0, 0, pCursor->bits->width, pCursor->bits->height,
- 			   0, XYPixmap, (char *)pCursor->bits->mask);
-    gcvals[0] = GXandInverted;
-    ChangeGC (pGC, GCFunction, gcvals);
-    ValidateGC ((DrawablePtr)pPriv->maskBits, pGC);
-    (*pGC->ops->PutImage) ((DrawablePtr)pPriv->maskBits, pGC, 1,
-			   0, 0, pCursor->bits->width, pCursor->bits->height,
- 			   0, XYPixmap, (char *)pCursor->bits->source);
-    FreeScratchGC (pGC);
-    return pPriv;
-}
-
-static Bool
-miDCUnrealizeCursor (ScreenPtr pScreen, CursorPtr pCursor)
-{
-    miDCCursorPtr   pPriv;
-
-    pPriv = (miDCCursorPtr)dixLookupPrivate(&pCursor->bits->devPrivates,
-					    CursorScreenKey(pScreen));
-    if (pPriv && (pCursor->bits->refcnt <= 1))
-    {
-	if (pPriv->sourceBits)
-	    (*pScreen->DestroyPixmap) (pPriv->sourceBits);
-	if (pPriv->maskBits)
-	    (*pScreen->DestroyPixmap) (pPriv->maskBits);
-#ifdef ARGB_CURSOR
-	if (pPriv->pPicture)
-	    FreePicture (pPriv->pPicture, 0);
-#endif
-	xfree ((pointer) pPriv);
-	dixSetPrivate(&pCursor->bits->devPrivates, CursorScreenKey(pScreen), NULL);
-    }
-    return TRUE;
-}
-
-static void
-miDCPutBits (
-    DrawablePtr	    pDrawable,
-    miDCCursorPtr   pPriv,
-    GCPtr	    sourceGC,
-    GCPtr	    maskGC,
-    int             x_org,
-    int             y_org,
-    unsigned        w,
-    unsigned        h,
-    unsigned long   source,
-    unsigned long   mask)
-{
-    XID	    gcvals[1];
-    int     x, y;
-
-    if (sourceGC->fgPixel != source)
-    {
-	gcvals[0] = source;
-	DoChangeGC (sourceGC, GCForeground, gcvals, 0);
-    }
-    if (sourceGC->serialNumber != pDrawable->serialNumber)
-	ValidateGC (pDrawable, sourceGC);
-
-    if(sourceGC->miTranslate) 
-    {
-        x = pDrawable->x + x_org;
-        y = pDrawable->y + y_org;
-    } 
-    else
-    {
-        x = x_org;
-        y = y_org;
-    }
-
-    (*sourceGC->ops->PushPixels) (sourceGC, pPriv->sourceBits, pDrawable, w, h, x, y);
-    if (maskGC->fgPixel != mask)
-    {
-	gcvals[0] = mask;
-	DoChangeGC (maskGC, GCForeground, gcvals, 0);
-    }
-    if (maskGC->serialNumber != pDrawable->serialNumber)
-	ValidateGC (pDrawable, maskGC);
-
-    if(maskGC->miTranslate) 
-    {
-        x = pDrawable->x + x_org;
-        y = pDrawable->y + y_org;
-    } 
-    else
-    {
-        x = x_org;
-        y = y_org;
-    }
-
-    (*maskGC->ops->PushPixels) (maskGC, pPriv->maskBits, pDrawable, w, h, x, y);
-}
-
-static GCPtr
-miDCMakeGC(WindowPtr pWin)
-{
-    GCPtr pGC;
-    int   status;
-    XID   gcvals[2];
-
-    gcvals[0] = IncludeInferiors;
-    gcvals[1] = FALSE;
-    pGC = CreateGC((DrawablePtr)pWin,
-		   GCSubwindowMode|GCGraphicsExposures, gcvals, &status,
-		   (XID)0, serverClient);
-    return pGC;
-}
-
-
-static Bool
-miDCPutUpCursor (DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor,
-                 int x, int y, unsigned long source, unsigned long mask)
-{
-    miDCScreenPtr   pScreenPriv;
-    miDCCursorPtr   pPriv;
-    miDCBufferPtr   pBuffer;
-    WindowPtr	    pWin;
-
-    pPriv = (miDCCursorPtr)dixLookupPrivate(&pCursor->bits->devPrivates,
-					    CursorScreenKey(pScreen));
-    if (!pPriv)
-    {
-	pPriv = miDCRealize(pScreen, pCursor);
-	if (!pPriv)
-	    return FALSE;
-    }
-    pScreenPriv = (miDCScreenPtr)dixLookupPrivate(&pScreen->devPrivates,
-						  miDCScreenKey);
-    pWin = WindowTable[pScreen->myNum];
-    pBuffer = MIDCBUFFER(pDev, pScreen);
-
-#ifdef ARGB_CURSOR
-    if (pPriv->pPicture)
-    {
-	CompositePicture (PictOpOver,
-			  pPriv->pPicture,
-			  NULL,
-			  pBuffer->pRootPicture,
-			  0, 0, 0, 0, 
-			  x, y, 
-			  pCursor->bits->width,
-			  pCursor->bits->height);
-    }
-    else
-#endif
-    {
-	miDCPutBits ((DrawablePtr)pWin, pPriv,
-		     pBuffer->pSourceGC, pBuffer->pMaskGC,
-		     x, y, pCursor->bits->width, pCursor->bits->height,
-		     source, mask);
-    }
-    return TRUE;
-}
-
-static Bool
-miDCSaveUnderCursor (DeviceIntPtr pDev, ScreenPtr pScreen,
-                     int x, int y, int w, int h)
-{
-    miDCScreenPtr   pScreenPriv;
-    miDCBufferPtr   pBuffer;
-    PixmapPtr	    pSave;
-    WindowPtr	    pWin;
-    GCPtr	    pGC;
-
-    pScreenPriv = (miDCScreenPtr)dixLookupPrivate(&pScreen->devPrivates,
-						  miDCScreenKey);
-    pBuffer = MIDCBUFFER(pDev, pScreen);
-
-    pSave = pBuffer->pSave;
-    pWin = WindowTable[pScreen->myNum];
-    if (!pSave || pSave->drawable.width < w || pSave->drawable.height < h)
-    {
-	if (pSave)
-	    (*pScreen->DestroyPixmap) (pSave);
-	pBuffer->pSave = pSave =
-		(*pScreen->CreatePixmap) (pScreen, w, h, pScreen->rootDepth, 0);
-	if (!pSave)
-	    return FALSE;
-    }
-
-    pGC = pBuffer->pSaveGC;
-    if (pSave->drawable.serialNumber != pGC->serialNumber)
-	ValidateGC ((DrawablePtr) pSave, pGC);
-    (*pGC->ops->CopyArea) ((DrawablePtr) pWin, (DrawablePtr) pSave, pGC,
-			    x, y, w, h, 0, 0);
-    return TRUE;
-}
-
-static Bool
-miDCRestoreUnderCursor (DeviceIntPtr pDev, ScreenPtr pScreen,
-                        int x, int y, int w, int h)
-{
-    miDCScreenPtr   pScreenPriv;
-    miDCBufferPtr   pBuffer;
-    PixmapPtr	    pSave;
-    WindowPtr	    pWin;
-    GCPtr	    pGC;
-
-    pScreenPriv = (miDCScreenPtr)dixLookupPrivate(&pScreen->devPrivates,
-						  miDCScreenKey);
-    pBuffer = MIDCBUFFER(pDev, pScreen);
-    pSave = pBuffer->pSave;
-
-    pWin = WindowTable[pScreen->myNum];
-    if (!pSave)
-	return FALSE;
-
-    pGC = pBuffer->pRestoreGC;
-    if (pWin->drawable.serialNumber != pGC->serialNumber)
-	ValidateGC ((DrawablePtr) pWin, pGC);
-    (*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pWin, pGC,
-			    0, 0, w, h, x, y);
-    return TRUE;
-}
-
-static Bool
-miDCChangeSave (DeviceIntPtr pDev, ScreenPtr pScreen,
-                int x, int y, int w, int h, int dx, int dy)
-{
-    miDCScreenPtr   pScreenPriv;
-    miDCBufferPtr   pBuffer;
-    PixmapPtr	    pSave;
-    WindowPtr	    pWin;
-    GCPtr	    pGC;
-    int		    sourcex, sourcey, destx, desty, copyw, copyh;
-
-    pScreenPriv = (miDCScreenPtr)dixLookupPrivate(&pScreen->devPrivates,
-						  miDCScreenKey);
-    pBuffer = MIDCBUFFER(pDev, pScreen);
-
-    pSave = pBuffer->pSave;
-    pWin = WindowTable[pScreen->myNum];
-    /*
-     * restore the bits which are about to get trashed
-     */
-    if (!pSave)
-	return FALSE;
-
-    pGC = pBuffer->pRestoreGC;
-    if (pWin->drawable.serialNumber != pGC->serialNumber)
-	ValidateGC ((DrawablePtr) pWin, pGC);
-    /*
-     * copy the old bits to the screen.
-     */
-    if (dy > 0)
-    {
-	(*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pWin, pGC,
-			       0, h - dy, w, dy, x + dx, y + h);
-    }
-    else if (dy < 0)
-    {
-	(*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pWin, pGC,
-			       0, 0, w, -dy, x + dx, y + dy);
-    }
-    if (dy >= 0)
-    {
-	desty = y + dy;
-	sourcey = 0;
-	copyh = h - dy;
-    }
-    else
-    {
-	desty = y;
-	sourcey = - dy;
-	copyh = h + dy;
-    }
-    if (dx > 0)
-    {
-	(*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pWin, pGC,
-			       w - dx, sourcey, dx, copyh, x + w, desty);
-    }
-    else if (dx < 0)
-    {
-	(*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pWin, pGC,
-			       0, sourcey, -dx, copyh, x + dx, desty);
-    }
-
-    pGC = pBuffer->pSaveGC;
-    if (pSave->drawable.serialNumber != pGC->serialNumber)
-	ValidateGC ((DrawablePtr) pSave, pGC);
-    /*
-     * move the bits that are still valid within the pixmap
-     */
-    if (dx >= 0)
-    {
-	sourcex = 0;
-	destx = dx;
-	copyw = w - dx;
-    }
-    else
-    {
-	destx = 0;
-	sourcex = - dx;
-	copyw = w + dx;
-    }
-    if (dy >= 0)
-    {
-	sourcey = 0;
-	desty = dy;
-	copyh = h - dy;
-    }
-    else
-    {
-	desty = 0;
-	sourcey = -dy;
-	copyh = h + dy;
-    }
-    (*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pSave, pGC,
-			   sourcex, sourcey, copyw, copyh, destx, desty);
-    /*
-     * copy the new bits from the screen into the remaining areas of the
-     * pixmap
-     */
-    if (dy > 0)
-    {
-	(*pGC->ops->CopyArea) ((DrawablePtr) pWin, (DrawablePtr) pSave, pGC,
-			       x, y, w, dy, 0, 0);
-    }
-    else if (dy < 0)
-    {
-	(*pGC->ops->CopyArea) ((DrawablePtr) pWin, (DrawablePtr) pSave, pGC,
-			       x, y + h + dy, w, -dy, 0, h + dy);
-    }
-    if (dy >= 0)
-    {
-	desty = dy;
-	sourcey = y + dy;
-	copyh = h - dy;
-    }
-    else
-    {
-	desty = 0;
-	sourcey = y;
-	copyh = h + dy;
-    }
-    if (dx > 0)
-    {
-	(*pGC->ops->CopyArea) ((DrawablePtr) pWin, (DrawablePtr) pSave, pGC,
-			       x, sourcey, dx, copyh, 0, desty);
-    }
-    else if (dx < 0)
-    {
-	(*pGC->ops->CopyArea) ((DrawablePtr) pWin, (DrawablePtr) pSave, pGC,
-			       x + w + dx, sourcey, -dx, copyh, w + dx, desty);
-    }
-    return TRUE;
-}
-
-static Bool
-miDCMoveCursor (DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor,
-                int x, int y, int w, int h, int dx, int dy,
-                unsigned long source, unsigned long mask)
-{
-    miDCCursorPtr   pPriv;
-    miDCScreenPtr   pScreenPriv;
-    miDCBufferPtr   pBuffer;
-    int		    status;
-    WindowPtr	    pWin;
-    GCPtr	    pGC;
-    XID		    gcval = FALSE;
-    PixmapPtr	    pTemp;
-
-    pPriv = (miDCCursorPtr)dixLookupPrivate(&pCursor->bits->devPrivates,
-					    CursorScreenKey(pScreen));
-    if (!pPriv)
-    {
-	pPriv = miDCRealize(pScreen, pCursor);
-	if (!pPriv)
-	    return FALSE;
-    }
-    pScreenPriv = (miDCScreenPtr)dixLookupPrivate(&pScreen->devPrivates,
-						  miDCScreenKey);
-    pWin = WindowTable[pScreen->myNum];
-    pBuffer = MIDCBUFFER(pDev, pScreen);
-
-    pTemp = pBuffer->pTemp;
-    if (!pTemp ||
-	pTemp->drawable.width != pBuffer->pSave->drawable.width ||
-	pTemp->drawable.height != pBuffer->pSave->drawable.height)
-    {
-	if (pTemp)
-	    (*pScreen->DestroyPixmap) (pTemp);
-#ifdef ARGB_CURSOR
-	if (pBuffer->pTempPicture)
-	{
-	    FreePicture (pBuffer->pTempPicture, 0);
-	    pBuffer->pTempPicture = 0;
-	}
-#endif
-	pBuffer->pTemp = pTemp = (*pScreen->CreatePixmap)
-	    (pScreen, w, h, pBuffer->pSave->drawable.depth, 0);
-	if (!pTemp)
-	    return FALSE;
-    }
-    if (!pBuffer->pMoveGC)
-    {
-	pBuffer->pMoveGC = CreateGC ((DrawablePtr)pTemp,
-	    GCGraphicsExposures, &gcval, &status, (XID)0, serverClient);
-	if (!pBuffer->pMoveGC)
-	    return FALSE;
-    }
-    /*
-     * copy the saved area to a temporary pixmap
-     */
-    pGC = pBuffer->pMoveGC;
-    if (pGC->serialNumber != pTemp->drawable.serialNumber)
-	ValidateGC ((DrawablePtr) pTemp, pGC);
-    (*pGC->ops->CopyArea)((DrawablePtr)pBuffer->pSave,
-			  (DrawablePtr)pTemp, pGC, 0, 0, w, h, 0, 0);
-    
-    /*
-     * draw the cursor in the temporary pixmap
-     */
-#ifdef ARGB_CURSOR
-    if (pPriv->pPicture)
-    {
-	if (!pBuffer->pTempPicture)
-            miDCMakePicture(&pBuffer->pTempPicture, &pTemp->drawable, pWin);
-
-	CompositePicture (PictOpOver,
-			  pPriv->pPicture,
-			  NULL,
-			  pBuffer->pTempPicture,
-			  0, 0, 0, 0, 
-			  dx, dy, 
-			  pCursor->bits->width,
-			  pCursor->bits->height);
-    }
-    else
-#endif
-    {
-	miDCPutBits ((DrawablePtr)pTemp, pPriv,
-		     pBuffer->pPixSourceGC, pBuffer->pPixMaskGC,
-		     dx, dy, pCursor->bits->width, pCursor->bits->height,
-		     source, mask);
-    }
-
-    pGC = pBuffer->pRestoreGC;
-    if (pWin->drawable.serialNumber != pGC->serialNumber)
-	ValidateGC ((DrawablePtr) pWin, pGC);
-
-    (*pGC->ops->CopyArea) ((DrawablePtr) pTemp, (DrawablePtr) pWin,
-			    pGC,
-			    0, 0, w, h, x, y);
-    return TRUE;
-}
-
-static Bool
-miDCDeviceInitialize(DeviceIntPtr pDev, ScreenPtr pScreen)
-{
-    miDCBufferPtr   pBuffer;
-    WindowPtr       pWin;
-    XID             gcval = FALSE;
-    int             status;
-    int             i;
-
-    if (!DevHasCursor(pDev))
-        return TRUE;
-
-    for (i = 0; i < screenInfo.numScreens; i++)
-    {
-        pScreen = screenInfo.screens[i];
-
-        pBuffer = xalloc(sizeof(miDCBufferRec));
-        if (!pBuffer)
-            goto failure;
-
-        dixSetPrivate(&pDev->devPrivates, miDCSpriteKey + pScreen->myNum, pBuffer);
-        pWin = WindowTable[pScreen->myNum];
-
-        pBuffer->pSourceGC = miDCMakeGC(pWin);
-        if (!pBuffer->pSourceGC)
-            goto failure;
-
-        pBuffer->pMaskGC = miDCMakeGC(pWin);
-        if (!pBuffer->pMaskGC)
-            goto failure;
-
-        pBuffer->pSaveGC = miDCMakeGC(pWin);
-        if (!pBuffer->pSaveGC)
-            goto failure;
-
-        pBuffer->pRestoreGC = miDCMakeGC(pWin);
-        if (!pBuffer->pRestoreGC)
-            goto failure;
-
-        pBuffer->pMoveGC = CreateGC ((DrawablePtr)pWin,
-            GCGraphicsExposures, &gcval, &status, (XID)0, serverClient);
-        if (!pBuffer->pMoveGC)
-            goto failure;
-
-        pBuffer->pPixSourceGC = CreateGC ((DrawablePtr)pWin,
-            GCGraphicsExposures, &gcval, &status, (XID)0, serverClient);
-        if (!pBuffer->pPixSourceGC)
-            goto failure;
-
-        pBuffer->pPixMaskGC = CreateGC ((DrawablePtr)pWin,
-            GCGraphicsExposures, &gcval, &status, (XID)0, serverClient);
-        if (!pBuffer->pPixMaskGC)
-            goto failure;
-
-#ifdef ARGB_CURSOR
-        miDCMakePicture(&pBuffer->pRootPicture, &pWin->drawable, pWin);
-        if (!pBuffer->pRootPicture)
-            goto failure;
-
-        pBuffer->pTempPicture = NULL;
-#endif
-
-        // these get (re)allocated lazily depending on the cursor size
-        pBuffer->pSave = pBuffer->pTemp = NULL;
-    }
-
-    return TRUE;
-
-failure:
-
-    miDCDeviceCleanup(pDev, pScreen);
-
-    return FALSE;
-}
-
-static void
-miDCDeviceCleanup(DeviceIntPtr pDev, ScreenPtr pScreen)
-{
-    miDCBufferPtr   pBuffer;
-    int             i;
-
-    if (DevHasCursor(pDev))
-    {
-        for (i = 0; i < screenInfo.numScreens; i++)
-        {
-            pScreen = screenInfo.screens[i];
-
-            pBuffer = MIDCBUFFER(pDev, pScreen);
-
-            if (pBuffer)
-            {
-                if (pBuffer->pSourceGC) FreeGC(pBuffer->pSourceGC, (GContext) 0);
-                if (pBuffer->pMaskGC) FreeGC(pBuffer->pMaskGC, (GContext) 0);
-                if (pBuffer->pSaveGC) FreeGC(pBuffer->pSaveGC, (GContext) 0);
-                if (pBuffer->pRestoreGC) FreeGC(pBuffer->pRestoreGC, (GContext) 0);
-                if (pBuffer->pMoveGC) FreeGC(pBuffer->pMoveGC, (GContext) 0);
-                if (pBuffer->pPixSourceGC) FreeGC(pBuffer->pPixSourceGC, (GContext) 0);
-                if (pBuffer->pPixMaskGC) FreeGC(pBuffer->pPixMaskGC, (GContext) 0);
-
-                if (pBuffer->pSave) (*pScreen->DestroyPixmap)(pBuffer->pSave);
-                if (pBuffer->pTemp) (*pScreen->DestroyPixmap)(pBuffer->pTemp);
-
-                xfree(pBuffer);
-                dixSetPrivate(&pDev->devPrivates, miDCSpriteKey + pScreen->myNum, NULL);
-            }
-        }
-    }
-}
+/*

+ * midispcur.c

+ *

+ * machine independent cursor display routines

+ */

+

+

+/*

+

+Copyright 1989, 1998  The Open Group

+

+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.

+

+The above copyright notice and this permission notice 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 NONINFRINGEMENT.  IN NO EVENT SHALL THE

+OPEN GROUP 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.

+

+Except as contained in this notice, the name of The Open Group shall not be

+used in advertising or otherwise to promote the sale, use or other dealings

+in this Software without prior written authorization from The Open Group.

+*/

+

+#ifdef HAVE_DIX_CONFIG_H

+#include <dix-config.h>

+#endif

+

+# include   <X11/X.h>

+# include   "misc.h"

+# include   "input.h"

+# include   "cursorstr.h"

+# include   "windowstr.h"

+# include   "regionstr.h"

+# include   "dixstruct.h"

+# include   "scrnintstr.h"

+# include   "servermd.h"

+# include   "mipointer.h"

+# include   "misprite.h"

+# include   "gcstruct.h"

+

+#ifdef ARGB_CURSOR

+# include   "picturestr.h"

+#endif

+

+# include "inputstr.h"

+

+/* per-screen private data */

+static int miDCScreenKeyIndex;

+static DevPrivateKey miDCScreenKey = &miDCScreenKeyIndex;

+

+static Bool	miDCCloseScreen(int index, ScreenPtr pScreen);

+

+/* per device per-screen private data */

+static int miDCSpriteKeyIndex[MAXSCREENS];

+static DevPrivateKey miDCSpriteKey = miDCSpriteKeyIndex;

+

+typedef struct {

+    GCPtr	    pSourceGC, pMaskGC;

+    GCPtr	    pSaveGC, pRestoreGC;

+    GCPtr	    pMoveGC;

+    GCPtr	    pPixSourceGC, pPixMaskGC;

+    PixmapPtr	    pSave, pTemp;

+#ifdef ARGB_CURSOR

+    PicturePtr	    pRootPicture;

+    PicturePtr	    pTempPicture;

+#endif

+} miDCBufferRec, *miDCBufferPtr;

+

+#define MIDCBUFFER(dev, screen) \

+ ((DevHasCursor(dev)) ? \

+  (miDCBufferPtr)dixLookupPrivate(&dev->devPrivates, miDCSpriteKey + (screen)->myNum) : \

+  (miDCBufferPtr)dixLookupPrivate(&dev->u.master->devPrivates, miDCSpriteKey + (screen)->myNum))

+

+/* 

+ * The core pointer buffer will point to the index of the virtual core pointer

+ * in the pCursorBuffers array. 

+ */

+typedef struct {

+    CloseScreenProcPtr CloseScreen;

+} miDCScreenRec, *miDCScreenPtr;

+

+/* per-cursor per-screen private data */

+typedef struct {

+    PixmapPtr		sourceBits;	    /* source bits */

+    PixmapPtr		maskBits;	    /* mask bits */

+#ifdef ARGB_CURSOR

+    PicturePtr		pPicture;

+#endif

+} miDCCursorRec, *miDCCursorPtr;

+

+/*

+ * sprite/cursor method table

+ */

+

+static Bool	miDCRealizeCursor(ScreenPtr pScreen, CursorPtr pCursor);

+static Bool	miDCUnrealizeCursor(ScreenPtr pScreen, CursorPtr pCursor);

+static Bool	miDCPutUpCursor(DeviceIntPtr pDev, ScreenPtr pScreen, 

+                                CursorPtr pCursor, int x, int y, 

+                                unsigned long source, unsigned long mask);

+static Bool	miDCSaveUnderCursor(DeviceIntPtr pDev, ScreenPtr pScreen, 

+                                    int x, int y,

+				    int w, int h);

+static Bool	miDCRestoreUnderCursor(DeviceIntPtr pDev, ScreenPtr pScreen, 

+                                       int x, int y,

+				       int w, int h);

+static Bool	miDCMoveCursor(DeviceIntPtr pDev, ScreenPtr pScreen, 

+                               CursorPtr pCursor, int x, int y, 

+                               int w, int h, int dx, int dy,

+			       unsigned long source, unsigned long mask);

+static Bool	miDCChangeSave(DeviceIntPtr pDev, ScreenPtr pScreen, 

+                               int x, int y, int w, int h,	

+                               int dx, int dy);

+

+static Bool     miDCDeviceInitialize(DeviceIntPtr pDev, ScreenPtr pScreen);

+static void     miDCDeviceCleanup(DeviceIntPtr pDev, ScreenPtr pScreen);

+

+static miSpriteCursorFuncRec miDCFuncs = {

+    miDCRealizeCursor,

+    miDCUnrealizeCursor,

+    miDCPutUpCursor,

+    miDCSaveUnderCursor,

+    miDCRestoreUnderCursor,

+    miDCMoveCursor,

+    miDCChangeSave,

+    miDCDeviceInitialize,

+    miDCDeviceCleanup

+};

+

+Bool

+miDCInitialize (ScreenPtr pScreen, miPointerScreenFuncPtr screenFuncs)

+{

+    miDCScreenPtr   pScreenPriv;

+

+    pScreenPriv = malloc(sizeof (miDCScreenRec));

+    if (!pScreenPriv)

+	return FALSE;

+

+

+    pScreenPriv->CloseScreen = pScreen->CloseScreen;

+    pScreen->CloseScreen = miDCCloseScreen;

+

+    dixSetPrivate(&pScreen->devPrivates, miDCScreenKey, pScreenPriv);

+

+    if (!miSpriteInitialize (pScreen, &miDCFuncs, screenFuncs))

+    {

+	free((pointer) pScreenPriv);

+	return FALSE;

+    }

+    return TRUE;

+}

+

+static Bool

+miDCCloseScreen (int index, ScreenPtr pScreen)

+{

+    miDCScreenPtr   pScreenPriv;

+

+    pScreenPriv = (miDCScreenPtr)dixLookupPrivate(&pScreen->devPrivates,

+						  miDCScreenKey);

+    pScreen->CloseScreen = pScreenPriv->CloseScreen;

+    free((pointer) pScreenPriv);

+    return (*pScreen->CloseScreen) (index, pScreen);

+}

+

+static Bool

+miDCRealizeCursor (ScreenPtr pScreen, CursorPtr pCursor)

+{

+    if (pCursor->bits->refcnt <= 1)

+	dixSetPrivate(&pCursor->bits->devPrivates, CursorScreenKey(pScreen), NULL);

+    return TRUE;

+}

+

+#ifdef ARGB_CURSOR

+

+static VisualPtr

+miDCGetWindowVisual (WindowPtr pWin)

+{

+    ScreenPtr	    pScreen = pWin->drawable.pScreen;

+    VisualID	    vid = wVisual (pWin);

+    int		    i;

+

+    for (i = 0; i < pScreen->numVisuals; i++)

+	if (pScreen->visuals[i].vid == vid)

+	    return &pScreen->visuals[i];

+    return 0;

+}

+

+static PicturePtr

+miDCMakePicture (PicturePtr *ppPicture, DrawablePtr pDraw, WindowPtr pWin)

+{

+    ScreenPtr	    pScreen = pDraw->pScreen;

+    VisualPtr	    pVisual;

+    PictFormatPtr   pFormat;

+    XID		    subwindow_mode = IncludeInferiors;

+    PicturePtr	    pPicture;

+    int		    error;

+    

+    pVisual = miDCGetWindowVisual (pWin);

+    if (!pVisual)

+	return 0;

+    pFormat = PictureMatchVisual (pScreen, pDraw->depth, pVisual);

+    if (!pFormat)

+	return 0;

+    pPicture = CreatePicture (0, pDraw, pFormat,

+			      CPSubwindowMode, &subwindow_mode,

+			      serverClient, &error);

+    *ppPicture = pPicture;

+    return pPicture;

+}

+#endif

+

+static miDCCursorPtr

+miDCRealize (ScreenPtr pScreen, CursorPtr pCursor)

+{

+    miDCCursorPtr   pPriv;

+    GCPtr	    pGC;

+    ChangeGCVal	    gcvals;

+

+    pPriv = malloc(sizeof (miDCCursorRec));

+    if (!pPriv)

+	return NULL;

+#ifdef ARGB_CURSOR

+    if (pCursor->bits->argb)

+    {

+	PixmapPtr	pPixmap;

+	PictFormatPtr	pFormat;

+	int		error;

+	

+	pFormat = PictureMatchFormat (pScreen, 32, PICT_a8r8g8b8);

+	if (!pFormat)

+	{

+	    free((pointer) pPriv);

+	    return NULL;

+	}

+	

+	pPriv->sourceBits = 0;

+	pPriv->maskBits = 0;

+	pPixmap = (*pScreen->CreatePixmap) (pScreen, pCursor->bits->width,

+					    pCursor->bits->height, 32,

+					    CREATE_PIXMAP_USAGE_SCRATCH);

+	if (!pPixmap)

+	{

+	    free((pointer) pPriv);

+	    return NULL;

+	}

+	pGC = GetScratchGC (32, pScreen);

+	if (!pGC)

+	{

+	    (*pScreen->DestroyPixmap) (pPixmap);

+	    free((pointer) pPriv);

+	    return NULL;

+	}

+	ValidateGC (&pPixmap->drawable, pGC);

+	(*pGC->ops->PutImage) (&pPixmap->drawable, pGC, 32,

+			       0, 0, pCursor->bits->width,

+			       pCursor->bits->height,

+			       0, ZPixmap, (char *) pCursor->bits->argb);

+	FreeScratchGC (pGC);

+	pPriv->pPicture = CreatePicture (0, &pPixmap->drawable,

+					pFormat, 0, 0, serverClient, &error);

+        (*pScreen->DestroyPixmap) (pPixmap);

+	if (!pPriv->pPicture)

+	{

+	    free((pointer) pPriv);

+	    return NULL;

+	}

+	dixSetPrivate(&pCursor->bits->devPrivates, CursorScreenKey(pScreen), pPriv);

+	return pPriv;

+    }

+    pPriv->pPicture = 0;

+#endif

+    pPriv->sourceBits = (*pScreen->CreatePixmap) (pScreen, pCursor->bits->width, pCursor->bits->height, 1, 0);

+    if (!pPriv->sourceBits)

+    {

+	free((pointer) pPriv);

+	return NULL;

+    }

+    pPriv->maskBits =  (*pScreen->CreatePixmap) (pScreen, pCursor->bits->width, pCursor->bits->height, 1, 0);

+    if (!pPriv->maskBits)

+    {

+	(*pScreen->DestroyPixmap) (pPriv->sourceBits);

+	free((pointer) pPriv);

+	return NULL;

+    }

+    dixSetPrivate(&pCursor->bits->devPrivates, CursorScreenKey(pScreen), pPriv);

+

+    /* create the two sets of bits, clipping as appropriate */

+

+    pGC = GetScratchGC (1, pScreen);

+    if (!pGC)

+    {

+	(void) miDCUnrealizeCursor (pScreen, pCursor);

+	return NULL;

+    }

+

+    ValidateGC ((DrawablePtr)pPriv->sourceBits, pGC);

+    (*pGC->ops->PutImage) ((DrawablePtr)pPriv->sourceBits, pGC, 1,

+			   0, 0, pCursor->bits->width, pCursor->bits->height,

+ 			   0, XYPixmap, (char *)pCursor->bits->source);

+    gcvals.val = GXand;

+    ChangeGC (NullClient, pGC, GCFunction, &gcvals);

+    ValidateGC ((DrawablePtr)pPriv->sourceBits, pGC);

+    (*pGC->ops->PutImage) ((DrawablePtr)pPriv->sourceBits, pGC, 1,

+			   0, 0, pCursor->bits->width, pCursor->bits->height,

+ 			   0, XYPixmap, (char *)pCursor->bits->mask);

+

+    /* mask bits -- pCursor->mask & ~pCursor->source */

+    gcvals.val = GXcopy;

+    ChangeGC (NullClient, pGC, GCFunction, &gcvals);

+    ValidateGC ((DrawablePtr)pPriv->maskBits, pGC);

+    (*pGC->ops->PutImage) ((DrawablePtr)pPriv->maskBits, pGC, 1,

+			   0, 0, pCursor->bits->width, pCursor->bits->height,

+ 			   0, XYPixmap, (char *)pCursor->bits->mask);

+    gcvals.val = GXandInverted;

+    ChangeGC (NullClient, pGC, GCFunction, &gcvals);

+    ValidateGC ((DrawablePtr)pPriv->maskBits, pGC);

+    (*pGC->ops->PutImage) ((DrawablePtr)pPriv->maskBits, pGC, 1,

+			   0, 0, pCursor->bits->width, pCursor->bits->height,

+ 			   0, XYPixmap, (char *)pCursor->bits->source);

+    FreeScratchGC (pGC);

+    return pPriv;

+}

+

+static Bool

+miDCUnrealizeCursor (ScreenPtr pScreen, CursorPtr pCursor)

+{

+    miDCCursorPtr   pPriv;

+

+    pPriv = (miDCCursorPtr)dixLookupPrivate(&pCursor->bits->devPrivates,

+					    CursorScreenKey(pScreen));

+    if (pPriv && (pCursor->bits->refcnt <= 1))

+    {

+	if (pPriv->sourceBits)

+	    (*pScreen->DestroyPixmap) (pPriv->sourceBits);

+	if (pPriv->maskBits)

+	    (*pScreen->DestroyPixmap) (pPriv->maskBits);

+#ifdef ARGB_CURSOR

+	if (pPriv->pPicture)

+	    FreePicture (pPriv->pPicture, 0);

+#endif

+	free((pointer) pPriv);

+	dixSetPrivate(&pCursor->bits->devPrivates, CursorScreenKey(pScreen), NULL);

+    }

+    return TRUE;

+}

+

+static void

+miDCPutBits (

+    DrawablePtr	    pDrawable,

+    miDCCursorPtr   pPriv,

+    GCPtr	    sourceGC,

+    GCPtr	    maskGC,

+    int             x_org,

+    int             y_org,

+    unsigned        w,

+    unsigned        h,

+    unsigned long   source,

+    unsigned long   mask)

+{

+    ChangeGCVal gcval;

+    int     x, y;

+

+    if (sourceGC->fgPixel != source)

+    {

+	gcval.val = source;

+	ChangeGC (NullClient, sourceGC, GCForeground, &gcval);

+    }

+    if (sourceGC->serialNumber != pDrawable->serialNumber)

+	ValidateGC (pDrawable, sourceGC);

+

+    if(sourceGC->miTranslate) 

+    {

+        x = pDrawable->x + x_org;

+        y = pDrawable->y + y_org;

+    } 

+    else

+    {

+        x = x_org;

+        y = y_org;

+    }

+

+    (*sourceGC->ops->PushPixels) (sourceGC, pPriv->sourceBits, pDrawable, w, h, x, y);

+    if (maskGC->fgPixel != mask)

+    {

+	gcval.val = mask;

+	ChangeGC (NullClient, maskGC, GCForeground, &gcval);

+    }

+    if (maskGC->serialNumber != pDrawable->serialNumber)

+	ValidateGC (pDrawable, maskGC);

+

+    if(maskGC->miTranslate) 

+    {

+        x = pDrawable->x + x_org;

+        y = pDrawable->y + y_org;

+    } 

+    else

+    {

+        x = x_org;

+        y = y_org;

+    }

+

+    (*maskGC->ops->PushPixels) (maskGC, pPriv->maskBits, pDrawable, w, h, x, y);

+}

+

+static GCPtr

+miDCMakeGC(WindowPtr pWin)

+{

+    GCPtr pGC;

+    int   status;

+    XID   gcvals[2];

+

+    gcvals[0] = IncludeInferiors;

+    gcvals[1] = FALSE;

+    pGC = CreateGC((DrawablePtr)pWin,

+		   GCSubwindowMode|GCGraphicsExposures, gcvals, &status,

+		   (XID)0, serverClient);

+    return pGC;

+}

+

+

+static Bool

+miDCPutUpCursor (DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor,

+                 int x, int y, unsigned long source, unsigned long mask)

+{

+    miDCScreenPtr   pScreenPriv;

+    miDCCursorPtr   pPriv;

+    miDCBufferPtr   pBuffer;

+    WindowPtr	    pWin;

+

+    pPriv = (miDCCursorPtr)dixLookupPrivate(&pCursor->bits->devPrivates,

+					    CursorScreenKey(pScreen));

+    if (!pPriv)

+    {

+	pPriv = miDCRealize(pScreen, pCursor);

+	if (!pPriv)

+	    return FALSE;

+    }

+    pScreenPriv = (miDCScreenPtr)dixLookupPrivate(&pScreen->devPrivates,

+						  miDCScreenKey);

+    pWin = WindowTable[pScreen->myNum];

+    pBuffer = MIDCBUFFER(pDev, pScreen);

+

+#ifdef ARGB_CURSOR

+    if (pPriv->pPicture)

+    {

+	CompositePicture (PictOpOver,

+			  pPriv->pPicture,

+			  NULL,

+			  pBuffer->pRootPicture,

+			  0, 0, 0, 0, 

+			  x, y, 

+			  pCursor->bits->width,

+			  pCursor->bits->height);

+    }

+    else

+#endif

+    {

+	miDCPutBits ((DrawablePtr)pWin, pPriv,

+		     pBuffer->pSourceGC, pBuffer->pMaskGC,

+		     x, y, pCursor->bits->width, pCursor->bits->height,

+		     source, mask);

+    }

+    return TRUE;

+}

+

+static Bool

+miDCSaveUnderCursor (DeviceIntPtr pDev, ScreenPtr pScreen,

+                     int x, int y, int w, int h)

+{

+    miDCScreenPtr   pScreenPriv;

+    miDCBufferPtr   pBuffer;

+    PixmapPtr	    pSave;

+    WindowPtr	    pWin;

+    GCPtr	    pGC;

+

+    pScreenPriv = (miDCScreenPtr)dixLookupPrivate(&pScreen->devPrivates,

+						  miDCScreenKey);

+    pBuffer = MIDCBUFFER(pDev, pScreen);

+

+    pSave = pBuffer->pSave;

+    pWin = WindowTable[pScreen->myNum];

+    if (!pSave || pSave->drawable.width < w || pSave->drawable.height < h)

+    {

+	if (pSave)

+	    (*pScreen->DestroyPixmap) (pSave);

+	pBuffer->pSave = pSave =

+		(*pScreen->CreatePixmap) (pScreen, w, h, pScreen->rootDepth, 0);

+	if (!pSave)

+	    return FALSE;

+    }

+

+    pGC = pBuffer->pSaveGC;

+    if (pSave->drawable.serialNumber != pGC->serialNumber)

+	ValidateGC ((DrawablePtr) pSave, pGC);

+    (*pGC->ops->CopyArea) ((DrawablePtr) pWin, (DrawablePtr) pSave, pGC,

+			    x, y, w, h, 0, 0);

+    return TRUE;

+}

+

+static Bool

+miDCRestoreUnderCursor (DeviceIntPtr pDev, ScreenPtr pScreen,

+                        int x, int y, int w, int h)

+{

+    miDCScreenPtr   pScreenPriv;

+    miDCBufferPtr   pBuffer;

+    PixmapPtr	    pSave;

+    WindowPtr	    pWin;

+    GCPtr	    pGC;

+

+    pScreenPriv = (miDCScreenPtr)dixLookupPrivate(&pScreen->devPrivates,

+						  miDCScreenKey);

+    pBuffer = MIDCBUFFER(pDev, pScreen);

+    pSave = pBuffer->pSave;

+

+    pWin = WindowTable[pScreen->myNum];

+    if (!pSave)

+	return FALSE;

+

+    pGC = pBuffer->pRestoreGC;

+    if (pWin->drawable.serialNumber != pGC->serialNumber)

+	ValidateGC ((DrawablePtr) pWin, pGC);

+    (*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pWin, pGC,

+			    0, 0, w, h, x, y);

+    return TRUE;

+}

+

+static Bool

+miDCChangeSave (DeviceIntPtr pDev, ScreenPtr pScreen,

+                int x, int y, int w, int h, int dx, int dy)

+{

+    miDCScreenPtr   pScreenPriv;

+    miDCBufferPtr   pBuffer;

+    PixmapPtr	    pSave;

+    WindowPtr	    pWin;

+    GCPtr	    pGC;

+    int		    sourcex, sourcey, destx, desty, copyw, copyh;

+

+    pScreenPriv = (miDCScreenPtr)dixLookupPrivate(&pScreen->devPrivates,

+						  miDCScreenKey);

+    pBuffer = MIDCBUFFER(pDev, pScreen);

+

+    pSave = pBuffer->pSave;

+    pWin = WindowTable[pScreen->myNum];

+    /*

+     * restore the bits which are about to get trashed

+     */

+    if (!pSave)

+	return FALSE;

+

+    pGC = pBuffer->pRestoreGC;

+    if (pWin->drawable.serialNumber != pGC->serialNumber)

+	ValidateGC ((DrawablePtr) pWin, pGC);

+    /*

+     * copy the old bits to the screen.

+     */

+    if (dy > 0)

+    {

+	(*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pWin, pGC,

+			       0, h - dy, w, dy, x + dx, y + h);

+    }

+    else if (dy < 0)

+    {

+	(*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pWin, pGC,

+			       0, 0, w, -dy, x + dx, y + dy);

+    }

+    if (dy >= 0)

+    {

+	desty = y + dy;

+	sourcey = 0;

+	copyh = h - dy;

+    }

+    else

+    {

+	desty = y;

+	sourcey = - dy;

+	copyh = h + dy;

+    }

+    if (dx > 0)

+    {

+	(*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pWin, pGC,

+			       w - dx, sourcey, dx, copyh, x + w, desty);

+    }

+    else if (dx < 0)

+    {

+	(*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pWin, pGC,

+			       0, sourcey, -dx, copyh, x + dx, desty);

+    }

+

+    pGC = pBuffer->pSaveGC;

+    if (pSave->drawable.serialNumber != pGC->serialNumber)

+	ValidateGC ((DrawablePtr) pSave, pGC);

+    /*

+     * move the bits that are still valid within the pixmap

+     */

+    if (dx >= 0)

+    {

+	sourcex = 0;

+	destx = dx;

+	copyw = w - dx;

+    }

+    else

+    {

+	destx = 0;

+	sourcex = - dx;

+	copyw = w + dx;

+    }

+    if (dy >= 0)

+    {

+	sourcey = 0;

+	desty = dy;

+	copyh = h - dy;

+    }

+    else

+    {

+	desty = 0;

+	sourcey = -dy;

+	copyh = h + dy;

+    }

+    (*pGC->ops->CopyArea) ((DrawablePtr) pSave, (DrawablePtr) pSave, pGC,

+			   sourcex, sourcey, copyw, copyh, destx, desty);

+    /*

+     * copy the new bits from the screen into the remaining areas of the

+     * pixmap

+     */

+    if (dy > 0)

+    {

+	(*pGC->ops->CopyArea) ((DrawablePtr) pWin, (DrawablePtr) pSave, pGC,

+			       x, y, w, dy, 0, 0);

+    }

+    else if (dy < 0)

+    {

+	(*pGC->ops->CopyArea) ((DrawablePtr) pWin, (DrawablePtr) pSave, pGC,

+			       x, y + h + dy, w, -dy, 0, h + dy);

+    }

+    if (dy >= 0)

+    {

+	desty = dy;

+	sourcey = y + dy;

+	copyh = h - dy;

+    }

+    else

+    {

+	desty = 0;

+	sourcey = y;

+	copyh = h + dy;

+    }

+    if (dx > 0)

+    {

+	(*pGC->ops->CopyArea) ((DrawablePtr) pWin, (DrawablePtr) pSave, pGC,

+			       x, sourcey, dx, copyh, 0, desty);

+    }

+    else if (dx < 0)

+    {

+	(*pGC->ops->CopyArea) ((DrawablePtr) pWin, (DrawablePtr) pSave, pGC,

+			       x + w + dx, sourcey, -dx, copyh, w + dx, desty);

+    }

+    return TRUE;

+}

+

+static Bool

+miDCMoveCursor (DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor,

+                int x, int y, int w, int h, int dx, int dy,

+                unsigned long source, unsigned long mask)

+{

+    miDCCursorPtr   pPriv;

+    miDCScreenPtr   pScreenPriv;

+    miDCBufferPtr   pBuffer;

+    int		    status;

+    WindowPtr	    pWin;

+    GCPtr	    pGC;

+    XID		    gcval = FALSE;

+    PixmapPtr	    pTemp;

+

+    pPriv = (miDCCursorPtr)dixLookupPrivate(&pCursor->bits->devPrivates,

+					    CursorScreenKey(pScreen));

+    if (!pPriv)

+    {

+	pPriv = miDCRealize(pScreen, pCursor);

+	if (!pPriv)

+	    return FALSE;

+    }

+    pScreenPriv = (miDCScreenPtr)dixLookupPrivate(&pScreen->devPrivates,

+						  miDCScreenKey);

+    pWin = WindowTable[pScreen->myNum];

+    pBuffer = MIDCBUFFER(pDev, pScreen);

+

+    pTemp = pBuffer->pTemp;

+    if (!pTemp ||

+	pTemp->drawable.width != pBuffer->pSave->drawable.width ||

+	pTemp->drawable.height != pBuffer->pSave->drawable.height)

+    {

+	if (pTemp)

+	    (*pScreen->DestroyPixmap) (pTemp);

+#ifdef ARGB_CURSOR

+	if (pBuffer->pTempPicture)

+	{

+	    FreePicture (pBuffer->pTempPicture, 0);

+	    pBuffer->pTempPicture = 0;

+	}

+#endif

+	pBuffer->pTemp = pTemp = (*pScreen->CreatePixmap)

+	    (pScreen, w, h, pBuffer->pSave->drawable.depth, 0);

+	if (!pTemp)

+	    return FALSE;

+    }

+    if (!pBuffer->pMoveGC)

+    {

+	pBuffer->pMoveGC = CreateGC ((DrawablePtr)pTemp,

+	    GCGraphicsExposures, &gcval, &status, (XID)0, serverClient);

+	if (!pBuffer->pMoveGC)

+	    return FALSE;

+    }

+    /*

+     * copy the saved area to a temporary pixmap

+     */

+    pGC = pBuffer->pMoveGC;

+    if (pGC->serialNumber != pTemp->drawable.serialNumber)

+	ValidateGC ((DrawablePtr) pTemp, pGC);

+    (*pGC->ops->CopyArea)((DrawablePtr)pBuffer->pSave,

+			  (DrawablePtr)pTemp, pGC, 0, 0, w, h, 0, 0);

+    

+    /*

+     * draw the cursor in the temporary pixmap

+     */

+#ifdef ARGB_CURSOR

+    if (pPriv->pPicture)

+    {

+	if (!pBuffer->pTempPicture)

+            miDCMakePicture(&pBuffer->pTempPicture, &pTemp->drawable, pWin);

+

+	CompositePicture (PictOpOver,

+			  pPriv->pPicture,

+			  NULL,

+			  pBuffer->pTempPicture,

+			  0, 0, 0, 0, 

+			  dx, dy, 

+			  pCursor->bits->width,

+			  pCursor->bits->height);

+    }

+    else

+#endif

+    {

+	miDCPutBits ((DrawablePtr)pTemp, pPriv,

+		     pBuffer->pPixSourceGC, pBuffer->pPixMaskGC,

+		     dx, dy, pCursor->bits->width, pCursor->bits->height,

+		     source, mask);

+    }

+

+    pGC = pBuffer->pRestoreGC;

+    if (pWin->drawable.serialNumber != pGC->serialNumber)

+	ValidateGC ((DrawablePtr) pWin, pGC);

+

+    (*pGC->ops->CopyArea) ((DrawablePtr) pTemp, (DrawablePtr) pWin,

+			    pGC,

+			    0, 0, w, h, x, y);

+    return TRUE;

+}

+

+static Bool

+miDCDeviceInitialize(DeviceIntPtr pDev, ScreenPtr pScreen)

+{

+    miDCBufferPtr   pBuffer;

+    WindowPtr       pWin;

+    XID             gcval = FALSE;

+    int             status;

+    int             i;

+

+    if (!DevHasCursor(pDev))

+        return TRUE;

+

+    for (i = 0; i < screenInfo.numScreens; i++)

+    {

+        pScreen = screenInfo.screens[i];

+

+        pBuffer = malloc(sizeof(miDCBufferRec));

+        if (!pBuffer)

+            goto failure;

+

+        dixSetPrivate(&pDev->devPrivates, miDCSpriteKey + pScreen->myNum, pBuffer);

+        pWin = WindowTable[pScreen->myNum];

+

+        pBuffer->pSourceGC = miDCMakeGC(pWin);

+        if (!pBuffer->pSourceGC)

+            goto failure;

+

+        pBuffer->pMaskGC = miDCMakeGC(pWin);

+        if (!pBuffer->pMaskGC)

+            goto failure;

+

+        pBuffer->pSaveGC = miDCMakeGC(pWin);

+        if (!pBuffer->pSaveGC)

+            goto failure;

+

+        pBuffer->pRestoreGC = miDCMakeGC(pWin);

+        if (!pBuffer->pRestoreGC)

+            goto failure;

+

+        pBuffer->pMoveGC = CreateGC ((DrawablePtr)pWin,

+            GCGraphicsExposures, &gcval, &status, (XID)0, serverClient);

+        if (!pBuffer->pMoveGC)

+            goto failure;

+

+        pBuffer->pPixSourceGC = CreateGC ((DrawablePtr)pWin,

+            GCGraphicsExposures, &gcval, &status, (XID)0, serverClient);

+        if (!pBuffer->pPixSourceGC)

+            goto failure;

+

+        pBuffer->pPixMaskGC = CreateGC ((DrawablePtr)pWin,

+            GCGraphicsExposures, &gcval, &status, (XID)0, serverClient);

+        if (!pBuffer->pPixMaskGC)

+            goto failure;

+

+#ifdef ARGB_CURSOR

+        miDCMakePicture(&pBuffer->pRootPicture, &pWin->drawable, pWin);

+        if (!pBuffer->pRootPicture)

+            goto failure;

+

+        pBuffer->pTempPicture = NULL;

+#endif

+

+        // these get (re)allocated lazily depending on the cursor size

+        pBuffer->pSave = pBuffer->pTemp = NULL;

+    }

+

+    return TRUE;

+

+failure:

+

+    miDCDeviceCleanup(pDev, pScreen);

+

+    return FALSE;

+}

+

+static void

+miDCDeviceCleanup(DeviceIntPtr pDev, ScreenPtr pScreen)

+{

+    miDCBufferPtr   pBuffer;

+    int             i;

+

+    if (DevHasCursor(pDev))

+    {

+        for (i = 0; i < screenInfo.numScreens; i++)

+        {

+            pScreen = screenInfo.screens[i];

+

+            pBuffer = MIDCBUFFER(pDev, pScreen);

+

+            if (pBuffer)

+            {

+                if (pBuffer->pSourceGC) FreeGC(pBuffer->pSourceGC, (GContext) 0);

+                if (pBuffer->pMaskGC) FreeGC(pBuffer->pMaskGC, (GContext) 0);

+                if (pBuffer->pSaveGC) FreeGC(pBuffer->pSaveGC, (GContext) 0);

+                if (pBuffer->pRestoreGC) FreeGC(pBuffer->pRestoreGC, (GContext) 0);

+                if (pBuffer->pMoveGC) FreeGC(pBuffer->pMoveGC, (GContext) 0);

+                if (pBuffer->pPixSourceGC) FreeGC(pBuffer->pPixSourceGC, (GContext) 0);

+                if (pBuffer->pPixMaskGC) FreeGC(pBuffer->pPixMaskGC, (GContext) 0);

+

+                if (pBuffer->pSave) (*pScreen->DestroyPixmap)(pBuffer->pSave);

+                if (pBuffer->pTemp) (*pScreen->DestroyPixmap)(pBuffer->pTemp);

+

+                free(pBuffer);

+                dixSetPrivate(&pDev->devPrivates, miDCSpriteKey + pScreen->myNum, NULL);

+            }

+        }

+    }

+}