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

1 files changed, 1118 insertions, 1118 deletions

diff --git a/xorg-server/mi/misprite.c b/xorg-server/mi/misprite.c
index 43c090889..a7041b8ba 100644
--- a/xorg-server/mi/misprite.c
+++ b/xorg-server/mi/misprite.c
@@ -1,1118 +1,1118 @@
-/*
- * misprite.c
- *
- * machine independent software sprite 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   <X11/Xproto.h>
-#include   "misc.h"
-#include   "pixmapstr.h"
-#include   "input.h"
-#include   "mi.h"
-#include   "cursorstr.h"
-#include   <X11/fonts/font.h>
-#include   "scrnintstr.h"
-#include   "colormapst.h"
-#include   "windowstr.h"
-#include   "gcstruct.h"
-#include   "mipointer.h"
-#include   "misprite.h"
-#include   "dixfontstr.h"
-#include   <X11/fonts/fontstruct.h>
-#include   "inputstr.h"
-#include   "damage.h"
-
-typedef struct {
-    CursorPtr	    pCursor;
-    int		    x;			/* cursor hotspot */
-    int		    y;
-    BoxRec	    saved;		/* saved area from the screen */
-    Bool	    isUp;		/* cursor in frame buffer */
-    Bool	    shouldBeUp;		/* cursor should be displayed */
-    WindowPtr	    pCacheWin;		/* window the cursor last seen in */
-    Bool	    isInCacheWin;
-    Bool	    checkPixels;	/* check colormap collision */
-    ScreenPtr       pScreen;
-} miCursorInfoRec, *miCursorInfoPtr;
-
-/*
- * per screen information
- */
-
-typedef struct {
-    /* screen procedures */
-    CloseScreenProcPtr			CloseScreen;
-    GetImageProcPtr			GetImage;
-    GetSpansProcPtr			GetSpans;
-    SourceValidateProcPtr		SourceValidate;
-    
-    /* window procedures */
-    CopyWindowProcPtr			CopyWindow;
-    
-    /* colormap procedures */
-    InstallColormapProcPtr		InstallColormap;
-    StoreColorsProcPtr			StoreColors;
-    
-    /* os layer procedures */
-    ScreenBlockHandlerProcPtr		BlockHandler;
-    
-    /* device cursor procedures */
-    DeviceCursorInitializeProcPtr       DeviceCursorInitialize;
-    DeviceCursorCleanupProcPtr          DeviceCursorCleanup;
-
-    xColorItem	    colors[2];
-    ColormapPtr     pInstalledMap;
-    ColormapPtr     pColormap;
-    VisualPtr	    pVisual;
-    miSpriteCursorFuncPtr    funcs;
-    DamagePtr	    pDamage;		/* damage tracking structure */
-    Bool            damageRegistered;
-} miSpriteScreenRec, *miSpriteScreenPtr;
-
-#define SOURCE_COLOR	0
-#define MASK_COLOR	1
-
-/*
- * Overlap BoxPtr and Box elements
- */
-#define BOX_OVERLAP(pCbox,X1,Y1,X2,Y2) \
- 	(((pCbox)->x1 <= (X2)) && ((X1) <= (pCbox)->x2) && \
-	 ((pCbox)->y1 <= (Y2)) && ((Y1) <= (pCbox)->y2))
-
-/*
- * Overlap BoxPtr, origins, and rectangle
- */
-#define ORG_OVERLAP(pCbox,xorg,yorg,x,y,w,h) \
-    BOX_OVERLAP((pCbox),(x)+(xorg),(y)+(yorg),(x)+(xorg)+(w),(y)+(yorg)+(h))
-
-/*
- * Overlap BoxPtr, origins and RectPtr
- */
-#define ORGRECT_OVERLAP(pCbox,xorg,yorg,pRect) \
-    ORG_OVERLAP((pCbox),(xorg),(yorg),(pRect)->x,(pRect)->y, \
-		(int)((pRect)->width), (int)((pRect)->height))
-/*
- * Overlap BoxPtr and horizontal span
- */
-#define SPN_OVERLAP(pCbox,y,x,w) BOX_OVERLAP((pCbox),(x),(y),(x)+(w),(y))
-
-#define LINE_SORT(x1,y1,x2,y2) \
-{ int _t; \
-  if (x1 > x2) { _t = x1; x1 = x2; x2 = _t; } \
-  if (y1 > y2) { _t = y1; y1 = y2; y2 = _t; } }
-
-#define LINE_OVERLAP(pCbox,x1,y1,x2,y2,lw2) \
-    BOX_OVERLAP((pCbox), (x1)-(lw2), (y1)-(lw2), (x2)+(lw2), (y2)+(lw2))
-
-
-#define SPRITE_DEBUG_ENABLE 0
-#if SPRITE_DEBUG_ENABLE
-#define SPRITE_DEBUG(x)	ErrorF x
-#else
-#define SPRITE_DEBUG(x)
-#endif
-
-#define MISPRITE(dev) \
-    ((!IsMaster(dev) && !dev->u.master) ? \
-       (miCursorInfoPtr)dixLookupPrivate(&dev->devPrivates, miSpriteDevPrivatesKey) : \
-       (miCursorInfoPtr)dixLookupPrivate(&(GetMaster(dev, MASTER_POINTER))->devPrivates, miSpriteDevPrivatesKey))
-
-static void
-miSpriteDisableDamage(ScreenPtr pScreen, miSpriteScreenPtr pScreenPriv)
-{
-    if (pScreenPriv->damageRegistered) {
-	DamageUnregister (&(pScreen->GetScreenPixmap(pScreen)->drawable),
-			  pScreenPriv->pDamage);
-	pScreenPriv->damageRegistered = 0;
-    }
-}
-
-static void
-miSpriteEnableDamage(ScreenPtr pScreen, miSpriteScreenPtr pScreenPriv)
-{
-    if (!pScreenPriv->damageRegistered) {
-	pScreenPriv->damageRegistered = 1;
-	DamageRegister (&(pScreen->GetScreenPixmap(pScreen)->drawable),
-			pScreenPriv->pDamage);
-    }
-}
-
-static void
-miSpriteIsUp(miCursorInfoPtr pDevCursor)
-{
-    pDevCursor->isUp = TRUE;
-}
-
-static void
-miSpriteIsDown(miCursorInfoPtr pDevCursor)
-{
-    pDevCursor->isUp = FALSE;
-}
-
-/*
- * screen wrappers
- */
-
-static int miSpriteScreenKeyIndex;
-static DevPrivateKey miSpriteScreenKey = &miSpriteScreenKeyIndex;
-static int miSpriteDevPrivatesKeyIndex;
-static DevPrivateKey miSpriteDevPrivatesKey = &miSpriteDevPrivatesKeyIndex;
-
-static Bool	    miSpriteCloseScreen(int i, ScreenPtr pScreen);
-static void	    miSpriteGetImage(DrawablePtr pDrawable, int sx, int sy,
-				     int w, int h, unsigned int format,
-				     unsigned long planemask, char *pdstLine);
-static void	    miSpriteGetSpans(DrawablePtr pDrawable, int wMax,
-				     DDXPointPtr ppt, int *pwidth, int nspans,
-				     char *pdstStart);
-static void	    miSpriteSourceValidate(DrawablePtr pDrawable, int x, int y,
-					   int width, int height);
-static void	    miSpriteCopyWindow (WindowPtr pWindow,
-					DDXPointRec ptOldOrg,
-					RegionPtr prgnSrc);
-static void	    miSpriteBlockHandler(int i, pointer blockData,
-					 pointer pTimeout,
-					 pointer pReadMask);
-static void	    miSpriteInstallColormap(ColormapPtr pMap);
-static void	    miSpriteStoreColors(ColormapPtr pMap, int ndef,
-					xColorItem *pdef);
-
-static void	    miSpriteComputeSaved(DeviceIntPtr pDev,
-                                         ScreenPtr pScreen);
-
-static Bool         miSpriteDeviceCursorInitialize(DeviceIntPtr pDev,
-                                                   ScreenPtr pScreen);
-static void         miSpriteDeviceCursorCleanup(DeviceIntPtr pDev,
-                                                ScreenPtr pScreen);
-
-#define SCREEN_PROLOGUE(pScreen, field) ((pScreen)->field = \
-   ((miSpriteScreenPtr)dixLookupPrivate(&(pScreen)->devPrivates, \
-					miSpriteScreenKey))->field)
-#define SCREEN_EPILOGUE(pScreen, field)\
-    ((pScreen)->field = miSprite##field)
-
-/*
- * pointer-sprite method table
- */
-
-static Bool miSpriteRealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen,
-                                  CursorPtr pCursor);
-static Bool miSpriteUnrealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen,
-                                    CursorPtr pCursor);
-static void miSpriteSetCursor(DeviceIntPtr pDev, ScreenPtr pScreen,
-                              CursorPtr pCursor, int x, int y);
-static void miSpriteMoveCursor(DeviceIntPtr pDev, ScreenPtr pScreen,
-                               int x, int y);
-
-miPointerSpriteFuncRec miSpritePointerFuncs = {
-    miSpriteRealizeCursor,
-    miSpriteUnrealizeCursor,
-    miSpriteSetCursor,
-    miSpriteMoveCursor,
-    miSpriteDeviceCursorInitialize,
-    miSpriteDeviceCursorCleanup,
-};
-
-/*
- * other misc functions
- */
-
-static void miSpriteRemoveCursor(DeviceIntPtr pDev,
-                                 ScreenPtr pScreen);
-static void miSpriteSaveUnderCursor(DeviceIntPtr pDev,
-                                 ScreenPtr pScreen);
-static void miSpriteRestoreCursor(DeviceIntPtr pDev,
-                                 ScreenPtr pScreen);
-
-static void
-miSpriteReportDamage (DamagePtr pDamage, RegionPtr pRegion, void *closure)
-{
-    ScreenPtr		    pScreen = closure;
-    miSpriteScreenPtr	    pScreenPriv;
-    miCursorInfoPtr         pCursorInfo;
-    DeviceIntPtr            pDev;
-
-    pScreenPriv = dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);
-
-    for (pDev = inputInfo.devices; pDev; pDev = pDev->next)
-    {
-        if (DevHasCursor(pDev))
-        {
-            pCursorInfo = MISPRITE(pDev);
-
-            if (pCursorInfo->isUp &&
-                pCursorInfo->pScreen == pScreen &&
-                miRectIn(pRegion, &pCursorInfo->saved) != rgnOUT)
-            {
-                SPRITE_DEBUG(("Damage remove\n"));
-                miSpriteRemoveCursor (pDev, pScreen);
-            }
-        }
-    }
-}
-
-/*
- * miSpriteInitialize -- called from device-dependent screen
- * initialization proc after all of the function pointers have
- * been stored in the screen structure.
- */
-
-Bool
-miSpriteInitialize (ScreenPtr               pScreen,
-                    miSpriteCursorFuncPtr   cursorFuncs,
-                    miPointerScreenFuncPtr  screenFuncs)
-{
-    miSpriteScreenPtr	pScreenPriv;
-    VisualPtr		pVisual;
-
-    if (!DamageSetup (pScreen))
-	return FALSE;
-
-    pScreenPriv = xalloc (sizeof (miSpriteScreenRec));
-    if (!pScreenPriv)
-	return FALSE;
-
-    pScreenPriv->pDamage = DamageCreate (miSpriteReportDamage,
-					 NULL,
-					 DamageReportRawRegion,
-					 TRUE,
-					 pScreen,
-					 pScreen);
-
-    if (!miPointerInitialize (pScreen, &miSpritePointerFuncs, screenFuncs,TRUE))
-    {
-	xfree (pScreenPriv);
-	return FALSE;
-    }
-    for (pVisual = pScreen->visuals;
-	 pVisual->vid != pScreen->rootVisual;
-	 pVisual++)
-	;
-    pScreenPriv->pVisual = pVisual;
-    pScreenPriv->CloseScreen = pScreen->CloseScreen;
-    pScreenPriv->GetImage = pScreen->GetImage;
-    pScreenPriv->GetSpans = pScreen->GetSpans;
-    pScreenPriv->SourceValidate = pScreen->SourceValidate;
-
-    pScreenPriv->CopyWindow = pScreen->CopyWindow;
-
-    pScreenPriv->InstallColormap = pScreen->InstallColormap;
-    pScreenPriv->StoreColors = pScreen->StoreColors;
-
-    pScreenPriv->BlockHandler = pScreen->BlockHandler;
-
-    pScreenPriv->DeviceCursorInitialize = pScreen->DeviceCursorInitialize;
-    pScreenPriv->DeviceCursorCleanup = pScreen->DeviceCursorCleanup;
-
-    pScreenPriv->pInstalledMap = NULL;
-    pScreenPriv->pColormap = NULL;
-    pScreenPriv->funcs = cursorFuncs;
-    pScreenPriv->colors[SOURCE_COLOR].red = 0;
-    pScreenPriv->colors[SOURCE_COLOR].green = 0;
-    pScreenPriv->colors[SOURCE_COLOR].blue = 0;
-    pScreenPriv->colors[MASK_COLOR].red = 0;
-    pScreenPriv->colors[MASK_COLOR].green = 0;
-    pScreenPriv->colors[MASK_COLOR].blue = 0;
-    pScreenPriv->damageRegistered = 0;
-
-    dixSetPrivate(&pScreen->devPrivates, miSpriteScreenKey, pScreenPriv);
-
-    pScreen->CloseScreen = miSpriteCloseScreen;
-    pScreen->GetImage = miSpriteGetImage;
-    pScreen->GetSpans = miSpriteGetSpans;
-    pScreen->SourceValidate = miSpriteSourceValidate;
-
-    pScreen->CopyWindow = miSpriteCopyWindow;
-    pScreen->InstallColormap = miSpriteInstallColormap;
-    pScreen->StoreColors = miSpriteStoreColors;
-
-    pScreen->BlockHandler = miSpriteBlockHandler;
-
-    return TRUE;
-}
-
-/*
- * Screen wrappers
- */
-
-/*
- * CloseScreen wrapper -- unwrap everything, free the private data
- * and call the wrapped function
- */
-
-static Bool
-miSpriteCloseScreen (int i, ScreenPtr pScreen)
-{
-    miSpriteScreenPtr   pScreenPriv;
-
-    pScreenPriv = dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);
-    pScreen->CloseScreen = pScreenPriv->CloseScreen;
-    pScreen->GetImage = pScreenPriv->GetImage;
-    pScreen->GetSpans = pScreenPriv->GetSpans;
-    pScreen->SourceValidate = pScreenPriv->SourceValidate;
-    pScreen->BlockHandler = pScreenPriv->BlockHandler;
-    pScreen->InstallColormap = pScreenPriv->InstallColormap;
-    pScreen->StoreColors = pScreenPriv->StoreColors;
-
-    DamageDestroy (pScreenPriv->pDamage);
-
-    xfree (pScreenPriv);
-
-    return (*pScreen->CloseScreen) (i, pScreen);
-}
-
-static void
-miSpriteGetImage (DrawablePtr pDrawable, int sx, int sy, int w, int h,
-                  unsigned int format, unsigned long planemask,
-                  char *pdstLine)
-{
-    ScreenPtr	    pScreen = pDrawable->pScreen;
-    miSpriteScreenPtr    pScreenPriv;
-    DeviceIntPtr    pDev;
-    miCursorInfoPtr pCursorInfo;
-
-    SCREEN_PROLOGUE (pScreen, GetImage);
-
-    if (pDrawable->type == DRAWABLE_WINDOW)
-    {
-        pScreenPriv = dixLookupPrivate(&pScreen->devPrivates,miSpriteScreenKey);
-        for(pDev = inputInfo.devices; pDev; pDev = pDev->next)
-        {
-            if (DevHasCursor(pDev))
-            {
-                 pCursorInfo = MISPRITE(pDev);
-                 if (pCursorInfo->isUp && pCursorInfo->pScreen == pScreen &&
-                      ORG_OVERLAP(&pCursorInfo->saved,pDrawable->x,pDrawable->y,
-                                  sx, sy, w, h))
-                 {
-                     SPRITE_DEBUG (("GetImage remove\n"));
-                     miSpriteRemoveCursor (pDev, pScreen);
-                 }
-            }
-        }
-    }
-
-    (*pScreen->GetImage) (pDrawable, sx, sy, w, h,
-			  format, planemask, pdstLine);
-
-    SCREEN_EPILOGUE (pScreen, GetImage);
-}
-
-static void
-miSpriteGetSpans (DrawablePtr pDrawable, int wMax, DDXPointPtr ppt,
-                  int *pwidth, int nspans, char *pdstStart)
-{
-    ScreenPtr		    pScreen = pDrawable->pScreen;
-    miSpriteScreenPtr	    pScreenPriv;
-    DeviceIntPtr            pDev;
-    miCursorInfoPtr         pCursorInfo;
-
-    SCREEN_PROLOGUE (pScreen, GetSpans);
-
-    if (pDrawable->type == DRAWABLE_WINDOW)
-    {
-        pScreenPriv = dixLookupPrivate(&pScreen->devPrivates,miSpriteScreenKey);
-
-        for(pDev = inputInfo.devices; pDev; pDev = pDev->next)
-        {
-            if (DevHasCursor(pDev))
-            {
-                pCursorInfo = MISPRITE(pDev);
-
-                if (pCursorInfo->isUp && pCursorInfo->pScreen == pScreen)
-                {
-                    DDXPointPtr    pts;
-                    int    	       *widths;
-                    int    	       nPts;
-                    int    	       xorg,
-                                   yorg;
-
-                    xorg = pDrawable->x;
-                    yorg = pDrawable->y;
-
-                    for (pts = ppt, widths = pwidth, nPts = nspans;
-                            nPts--;
-                            pts++, widths++)
-                    {
-                        if (SPN_OVERLAP(&pCursorInfo->saved,pts->y+yorg,
-                                    pts->x+xorg,*widths))
-                        {
-                            SPRITE_DEBUG (("GetSpans remove\n"));
-                            miSpriteRemoveCursor (pDev, pScreen);
-                            break;
-                        }
-                    }
-                }
-            }
-        }
-    }
-
-    (*pScreen->GetSpans) (pDrawable, wMax, ppt, pwidth, nspans, pdstStart);
-
-    SCREEN_EPILOGUE (pScreen, GetSpans);
-}
-
-static void
-miSpriteSourceValidate (DrawablePtr pDrawable, int x, int y, int width,
-                        int height)
-{
-    ScreenPtr		    pScreen = pDrawable->pScreen;
-    miSpriteScreenPtr	    pScreenPriv;
-    DeviceIntPtr            pDev;
-    miCursorInfoPtr         pCursorInfo;
-
-    SCREEN_PROLOGUE (pScreen, SourceValidate);
-
-    if (pDrawable->type == DRAWABLE_WINDOW)
-    {
-	pScreenPriv = dixLookupPrivate(&pScreen->devPrivates,miSpriteScreenKey);
-
-	for(pDev = inputInfo.devices; pDev; pDev = pDev->next)
-	{
-	    if (DevHasCursor(pDev))
-	    {
-		pCursorInfo = MISPRITE(pDev);
-		if (pCursorInfo && pCursorInfo->isUp && pCursorInfo->pScreen == pScreen &&
-		    ORG_OVERLAP(&pCursorInfo->saved, pDrawable->x, pDrawable->y,
-				x, y, width, height))
-		{
-		    SPRITE_DEBUG (("SourceValidate remove\n"));
-		    miSpriteRemoveCursor (pDev, pScreen);
-		}
-	    }
-	}
-    }
-
-    if (pScreen->SourceValidate)
-	(*pScreen->SourceValidate) (pDrawable, x, y, width, height);
-
-    SCREEN_EPILOGUE (pScreen, SourceValidate);
-}
-
-static void
-miSpriteCopyWindow (WindowPtr pWindow, DDXPointRec ptOldOrg, RegionPtr prgnSrc)
-{
-    ScreenPtr	pScreen = pWindow->drawable.pScreen;
-    miSpriteScreenPtr	    pScreenPriv;
-    DeviceIntPtr            pDev;
-    miCursorInfoPtr         pCursorInfo;
-
-    SCREEN_PROLOGUE (pScreen, CopyWindow);
-
-    pScreenPriv = dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);
-
-    for(pDev = inputInfo.devices; pDev; pDev = pDev->next)
-    {
-        if (DevHasCursor(pDev))
-        {
-            pCursorInfo = MISPRITE(pDev);
-            /*
-             * Damage will take care of destination check
-             */
-            if (pCursorInfo && pCursorInfo->isUp && pCursorInfo->pScreen == pScreen &&
-                    miRectIn(prgnSrc, &pCursorInfo->saved) != rgnOUT)
-            {
-                SPRITE_DEBUG (("CopyWindow remove\n"));
-                miSpriteRemoveCursor (pDev, pScreen);
-            }
-        }
-    }
-
-    (*pScreen->CopyWindow) (pWindow, ptOldOrg, prgnSrc);
-    SCREEN_EPILOGUE (pScreen, CopyWindow);
-}
-
-static void
-miSpriteBlockHandler (int i, pointer blockData, pointer pTimeout,
-                      pointer pReadmask)
-{
-    ScreenPtr		pScreen = screenInfo.screens[i];
-    miSpriteScreenPtr	pPriv;
-    DeviceIntPtr            pDev;
-    miCursorInfoPtr         pCursorInfo;
-
-    pPriv = dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);
-    SCREEN_PROLOGUE(pScreen, BlockHandler);
-
-    (*pScreen->BlockHandler) (i, blockData, pTimeout, pReadmask);
-
-    SCREEN_EPILOGUE(pScreen, BlockHandler);
-
-    for(pDev = inputInfo.devices; pDev; pDev = pDev->next)
-    {
-        if (DevHasCursor(pDev))
-        {
-            pCursorInfo = MISPRITE(pDev);
-            if (pCursorInfo && !pCursorInfo->isUp
-                    && pCursorInfo->pScreen == pScreen
-                    && pCursorInfo->shouldBeUp)
-            {
-                SPRITE_DEBUG (("BlockHandler restore\n"));
-                miSpriteSaveUnderCursor (pDev, pScreen);
-            }
-        }
-    }
-    for(pDev = inputInfo.devices; pDev; pDev = pDev->next)
-    {
-        if (DevHasCursor(pDev))
-        {
-            pCursorInfo = MISPRITE(pDev);
-            if (pCursorInfo && !pCursorInfo->isUp &&
-                    pCursorInfo->pScreen == pScreen &&
-                    pCursorInfo->shouldBeUp)
-            {
-                SPRITE_DEBUG (("BlockHandler restore\n"));
-                miSpriteRestoreCursor (pDev, pScreen);
-            }
-        }
-    }
-}
-
-static void
-miSpriteInstallColormap (ColormapPtr pMap)
-{
-    ScreenPtr		pScreen = pMap->pScreen;
-    miSpriteScreenPtr	pPriv;
-
-    pPriv = dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);
-    SCREEN_PROLOGUE(pScreen, InstallColormap);
-
-    (*pScreen->InstallColormap) (pMap);
-
-    SCREEN_EPILOGUE(pScreen, InstallColormap);
-
-    /* InstallColormap can be called before devices are initialized. */
-    pPriv->pInstalledMap = pMap;
-    if (pPriv->pColormap != pMap)
-    {
-        DeviceIntPtr pDev;
-        miCursorInfoPtr     pCursorInfo;
-        for (pDev = inputInfo.devices; pDev; pDev = pDev->next)
-        {
-            if (DevHasCursor(pDev))
-            {
-                pCursorInfo = MISPRITE(pDev);
-                if (pCursorInfo)
-                {
-                  pCursorInfo->checkPixels = TRUE;
-                  if (pCursorInfo->isUp && pCursorInfo->pScreen == pScreen)
-                      miSpriteRemoveCursor(pDev, pScreen);
-                }
-            }
-        }
-
-    }
-}
-
-static void
-miSpriteStoreColors (ColormapPtr pMap, int ndef, xColorItem *pdef)
-{
-    ScreenPtr		pScreen = pMap->pScreen;
-    miSpriteScreenPtr	pPriv;
-    int			i;
-    int			updated;
-    VisualPtr		pVisual;
-    DeviceIntPtr        pDev;
-    miCursorInfoPtr     pCursorInfo;
-
-    pPriv = dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);
-    SCREEN_PROLOGUE(pScreen, StoreColors);
-
-    (*pScreen->StoreColors) (pMap, ndef, pdef);
-
-    SCREEN_EPILOGUE(pScreen, StoreColors);
-
-    if (pPriv->pColormap == pMap)
-    {
-        updated = 0;
-        pVisual = pMap->pVisual;
-        if (pVisual->class == DirectColor)
-        {
-            /* Direct color - match on any of the subfields */
-
-#define MaskMatch(a,b,mask) (((a) & (pVisual->mask)) == ((b) & (pVisual->mask)))
-
-#define UpdateDAC(dev, plane,dac,mask) {\
-    if (MaskMatch (dev->colors[plane].pixel,pdef[i].pixel,mask)) {\
-	dev->colors[plane].dac = pdef[i].dac; \
-	updated = 1; \
-    } \
-}
-
-#define CheckDirect(dev, plane) \
-	    UpdateDAC(dev, plane,red,redMask) \
-	    UpdateDAC(dev, plane,green,greenMask) \
-	    UpdateDAC(dev, plane,blue,blueMask)
-
-            for (i = 0; i < ndef; i++)
-            {
-                CheckDirect (pPriv, SOURCE_COLOR)
-                CheckDirect (pPriv, MASK_COLOR)
-            }
-        }
-        else
-        {
-            /* PseudoColor/GrayScale - match on exact pixel */
-            for (i = 0; i < ndef; i++)
-            {
-                if (pdef[i].pixel ==
-                        pPriv->colors[SOURCE_COLOR].pixel)
-                {
-                    pPriv->colors[SOURCE_COLOR] = pdef[i];
-                    if (++updated == 2)
-                        break;
-                }
-                if (pdef[i].pixel ==
-                        pPriv->colors[MASK_COLOR].pixel)
-                {
-                    pPriv->colors[MASK_COLOR] = pdef[i];
-                    if (++updated == 2)
-                        break;
-                }
-            }
-        }
-        if (updated)
-        {
-            for(pDev = inputInfo.devices; pDev; pDev = pDev->next)
-            {
-                if (DevHasCursor(pDev))
-                {
-                    pCursorInfo = MISPRITE(pDev);
-                    pCursorInfo->checkPixels = TRUE;
-                    if (pCursorInfo->isUp && pCursorInfo->pScreen == pScreen)
-                        miSpriteRemoveCursor (pDev, pScreen);
-                }
-            }
-        }
-    }
-}
-
-static void
-miSpriteFindColors (miCursorInfoPtr pDevCursor, ScreenPtr pScreen)
-{
-    miSpriteScreenPtr   pScreenPriv =
-	dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);
-    CursorPtr		pCursor;
-    xColorItem		*sourceColor, *maskColor;
-
-    pCursor = pDevCursor->pCursor;
-    sourceColor = &pScreenPriv->colors[SOURCE_COLOR];
-    maskColor = &pScreenPriv->colors[MASK_COLOR];
-    if (pScreenPriv->pColormap != pScreenPriv->pInstalledMap ||
-	!(pCursor->foreRed == sourceColor->red &&
-	  pCursor->foreGreen == sourceColor->green &&
-          pCursor->foreBlue == sourceColor->blue &&
-	  pCursor->backRed == maskColor->red &&
-	  pCursor->backGreen == maskColor->green &&
-	  pCursor->backBlue == maskColor->blue))
-    {
-	pScreenPriv->pColormap = pScreenPriv->pInstalledMap;
-	sourceColor->red = pCursor->foreRed;
-	sourceColor->green = pCursor->foreGreen;
-	sourceColor->blue = pCursor->foreBlue;
-	FakeAllocColor (pScreenPriv->pColormap, sourceColor);
-	maskColor->red = pCursor->backRed;
-	maskColor->green = pCursor->backGreen;
-	maskColor->blue = pCursor->backBlue;
-	FakeAllocColor (pScreenPriv->pColormap, maskColor);
-	/* "free" the pixels right away, don't let this confuse you */
-	FakeFreeColor(pScreenPriv->pColormap, sourceColor->pixel);
-	FakeFreeColor(pScreenPriv->pColormap, maskColor->pixel);
-    }
-
-    pDevCursor->checkPixels = FALSE;
-
-}
-
-/*
- * miPointer interface routines
- */
-
-#define SPRITE_PAD  8
-
-static Bool
-miSpriteRealizeCursor (DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor)
-{
-    miSpriteScreenPtr	pScreenPriv;
-    miCursorInfoPtr pCursorInfo;
-
-    pScreenPriv = dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);
-    if (!IsMaster(pDev) && !pDev->u.master)
-        return FALSE;
-
-    pCursorInfo = MISPRITE(pDev);
-
-    if (pCursor == pCursorInfo->pCursor)
-	pCursorInfo->checkPixels = TRUE;
-
-    return (*pScreenPriv->funcs->RealizeCursor) (pScreen, pCursor);
-}
-
-static Bool
-miSpriteUnrealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor)
-{
-    miSpriteScreenPtr	pScreenPriv;
-
-    pScreenPriv = dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);
-    return (*pScreenPriv->funcs->UnrealizeCursor) (pScreen, pCursor);
-}
-
-static void
-miSpriteSetCursor (DeviceIntPtr pDev, ScreenPtr pScreen,
-                   CursorPtr pCursor, int x, int y)
-{
-    miSpriteScreenPtr	pScreenPriv;
-    miCursorInfoPtr pPointer;
-
-    pScreenPriv = dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);
-
-    if (!IsMaster(pDev) && !pDev->u.master)
-        return;
-
-    pPointer = MISPRITE(pDev);
-
-    if (!pCursor)
-    {
-    	pPointer->shouldBeUp = FALSE;
-    	if (pPointer->isUp)
-	    miSpriteRemoveCursor (pDev, pScreen);
-	pPointer->pCursor = 0;
-	return;
-    }
-    pPointer->shouldBeUp = TRUE;
-    if (pPointer->x == x &&
-	pPointer->y == y &&
-	pPointer->pCursor == pCursor &&
-	!pPointer->checkPixels)
-    {
-	return;
-    }
-    pPointer->x = x;
-    pPointer->y = y;
-    pPointer->pCacheWin = NullWindow;
-    if (pPointer->checkPixels || pPointer->pCursor != pCursor)
-    {
-	pPointer->pCursor = pCursor;
-	miSpriteFindColors (pPointer, pScreen);
-    }
-    if (pPointer->isUp) {
-#if 0
-        /* FIXME: Disabled for MPX, should be rewritten */
-	int	sx, sy;
-	/*
-	 * check to see if the old saved region
-	 * encloses the new sprite, in which case we use
-	 * the flicker-free MoveCursor primitive.
-	 */
-	sx = pointer->x - (int)pCursor->bits->xhot;
-	sy = pointer->y - (int)pCursor->bits->yhot;
-	if (sx + (int) pCursor->bits->width >= pointer->saved.x1 &&
-	    sx < pointer->saved.x2 &&
-	    sy + (int) pCursor->bits->height >= pointer->saved.y1 &&
-	    sy < pointer->saved.y2 &&
-	    (int) pCursor->bits->width + (2 * SPRITE_PAD) ==
-		pointer->saved.x2 - pointer->saved.x1 &&
-	    (int) pCursor->bits->height + (2 * SPRITE_PAD) ==
-		pointer->saved.y2 - pointer->saved.y1
-	    )
-	{
-	    DamageDrawInternal (pScreen, TRUE);
-	    miSpriteIsDown(pCursorInfo);
-	    if (!(sx >= pointer->saved.x1 &&
-                  sx + (int)pCursor->bits->width < pointer->saved.x2
-                  && sy >= pointer->saved.y1 &&
-                  sy + (int)pCursor->bits->height <
-                                pointer->saved.y2))
-            {
-		int oldx1, oldy1, dx, dy;
-
-		oldx1 = pointer->saved.x1;
-		oldy1 = pointer->saved.y1;
-		dx = oldx1 - (sx - SPRITE_PAD);
-		dy = oldy1 - (sy - SPRITE_PAD);
-		pointer->saved.x1 -= dx;
-		pointer->saved.y1 -= dy;
-		pointer->saved.x2 -= dx;
-		pointer->saved.y2 -= dy;
-		(void) (*pScreenPriv->funcs->ChangeSave) (pScreen,
-				pointer->saved.x1,
- 				pointer->saved.y1,
-                                pointer->saved.x2 -
-                                pointer->saved.x1,
-                                pointer->saved.y2 -
-                                pointer->saved.y1,
-				dx, dy);
-	    }
-	    (void) (*pScreenPriv->funcs->MoveCursor) (pScreen, pCursor,
-				  pointer->saved.x1,
- 				  pointer->saved.y1,
-                                  pointer->saved.x2 -
-                                  pointer->saved.x1,
-                                  pointer->saved.y2 -
-                                  pointer->saved.y1,
-				  sx - pointer->saved.x1,
-				  sy - pointer->saved.y1,
-				  pointer->colors[SOURCE_COLOR].pixel,
-				  pointer->colors[MASK_COLOR].pixel);
-	    miSpriteIsUp(pCursorInfo);
-	    DamageDrawInternal (pScreen, FALSE);
-	}
-	else
-#endif
-	{
-	    SPRITE_DEBUG (("SetCursor remove %d\n", pDev->id));
-	    miSpriteRemoveCursor (pDev, pScreen);
-	}
-    }
-
-    if (!pPointer->isUp && pPointer->pCursor)
-    {
-	SPRITE_DEBUG (("SetCursor restore %d\n", pDev->id));
-        miSpriteSaveUnderCursor(pDev, pScreen);
-	miSpriteRestoreCursor (pDev, pScreen);
-    }
-
-}
-
-static void
-miSpriteMoveCursor (DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y)
-{
-    miSpriteScreenPtr	pScreenPriv;
-    CursorPtr pCursor;
-
-    pScreenPriv = dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);
-    if (!IsMaster(pDev) && !pDev->u.master)
-        return;
-
-    pCursor = MISPRITE(pDev)->pCursor;
-
-    miSpriteSetCursor (pDev, pScreen, pCursor, x, y);
-}
-
-
-static Bool
-miSpriteDeviceCursorInitialize(DeviceIntPtr pDev, ScreenPtr pScreen)
-{
-    miSpriteScreenPtr pScreenPriv;
-    miCursorInfoPtr pCursorInfo;
-    int ret = FALSE;
-
-    pScreenPriv = dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);
-
-    pCursorInfo = xalloc(sizeof(miCursorInfoRec));
-    if (!pCursorInfo)
-        return FALSE;
-
-    pCursorInfo->pCursor = NULL;
-    pCursorInfo->x = 0;
-    pCursorInfo->y = 0;
-    pCursorInfo->isUp = FALSE;
-    pCursorInfo->shouldBeUp = FALSE;
-    pCursorInfo->pCacheWin = NullWindow;
-    pCursorInfo->isInCacheWin = FALSE;
-    pCursorInfo->checkPixels = TRUE;
-    pCursorInfo->pScreen = FALSE;
-
-    ret = (*pScreenPriv->funcs->DeviceCursorInitialize)(pDev, pScreen);
-    if (!ret)
-    {
-        xfree(pCursorInfo);
-        pCursorInfo = NULL;
-    }
-    dixSetPrivate(&pDev->devPrivates, miSpriteDevPrivatesKey, pCursorInfo);
-    return ret;
-}
-
-static void
-miSpriteDeviceCursorCleanup(DeviceIntPtr pDev, ScreenPtr pScreen)
-{
-    if (DevHasCursor(pDev))
-    {
-        miSpriteScreenPtr pScreenPriv;
-        pScreenPriv = dixLookupPrivate(&pScreen->devPrivates,
-                                       miSpriteScreenKey);
-
-        (*pScreenPriv->funcs->DeviceCursorCleanup)(pDev, pScreen);
-    }
-}
-
-/*
- * undraw/draw cursor
- */
-
-static void
-miSpriteRemoveCursor (DeviceIntPtr pDev, ScreenPtr pScreen)
-{
-    miSpriteScreenPtr   pScreenPriv;
-    miCursorInfoPtr     pCursorInfo;
-
-
-    if (!IsMaster(pDev) && !pDev->u.master)
-        return;
-
-    DamageDrawInternal (pScreen, TRUE);
-    pScreenPriv = dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);
-    pCursorInfo = MISPRITE(pDev);
-
-    miSpriteIsDown(pCursorInfo);
-    pCursorInfo->pCacheWin = NullWindow;
-    miSpriteDisableDamage(pScreen, pScreenPriv);
-    if (!(*pScreenPriv->funcs->RestoreUnderCursor) (pDev,
-                                         pScreen,
-					 pCursorInfo->saved.x1,
-                                         pCursorInfo->saved.y1,
-                                         pCursorInfo->saved.x2 -
-                                         pCursorInfo->saved.x1,
-                                         pCursorInfo->saved.y2 -
-                                         pCursorInfo->saved.y1))
-    {
-	miSpriteIsUp(pCursorInfo);
-    }
-    miSpriteEnableDamage(pScreen, pScreenPriv);
-    DamageDrawInternal (pScreen, FALSE);
-}
-
-/*
- * Called from the block handler, saves area under cursor
- * before waiting for something to do.
- */
-
-static void
-miSpriteSaveUnderCursor(DeviceIntPtr pDev, ScreenPtr pScreen)
-{
-    miSpriteScreenPtr   pScreenPriv;
-    int			x, y;
-    CursorPtr		pCursor;
-    miCursorInfoPtr     pCursorInfo;
-
-    if (!IsMaster(pDev) && !pDev->u.master)
-        return;
-
-    DamageDrawInternal (pScreen, TRUE);
-    pScreenPriv = dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);
-    pCursorInfo = MISPRITE(pDev);
-
-    miSpriteComputeSaved (pDev, pScreen);
-    pCursor = pCursorInfo->pCursor;
-
-    x = pCursorInfo->x - (int)pCursor->bits->xhot;
-    y = pCursorInfo->y - (int)pCursor->bits->yhot;
-    miSpriteDisableDamage(pScreen, pScreenPriv);
-
-    (*pScreenPriv->funcs->SaveUnderCursor) (pDev,
-                                      pScreen,
-				      pCursorInfo->saved.x1,
-				      pCursorInfo->saved.y1,
-                                      pCursorInfo->saved.x2 -
-                                      pCursorInfo->saved.x1,
-                                      pCursorInfo->saved.y2 -
-                                      pCursorInfo->saved.y1);
-    SPRITE_DEBUG(("SaveUnderCursor %d\n", pDev->id));
-    miSpriteEnableDamage(pScreen, pScreenPriv);
-    DamageDrawInternal (pScreen, FALSE);
-}
-
-
-/*
- * Called from the block handler, restores the cursor
- * before waiting for something to do.
- */
-
-static void
-miSpriteRestoreCursor (DeviceIntPtr pDev, ScreenPtr pScreen)
-{
-    miSpriteScreenPtr   pScreenPriv;
-    int			x, y;
-    CursorPtr		pCursor;
-    miCursorInfoPtr     pCursorInfo;
-
-    if (!IsMaster(pDev) && !pDev->u.master)
-        return;
-
-    DamageDrawInternal (pScreen, TRUE);
-    pScreenPriv = dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);
-    pCursorInfo = MISPRITE(pDev);
-
-    miSpriteComputeSaved (pDev, pScreen);
-    pCursor = pCursorInfo->pCursor;
-
-    x = pCursorInfo->x - (int)pCursor->bits->xhot;
-    y = pCursorInfo->y - (int)pCursor->bits->yhot;
-    miSpriteDisableDamage(pScreen, pScreenPriv);
-    SPRITE_DEBUG(("RestoreCursor %d\n", pDev->id));
-    if (pCursorInfo->checkPixels)
-        miSpriteFindColors (pCursorInfo, pScreen);
-    if ((*pScreenPriv->funcs->PutUpCursor) (pDev, pScreen,
-                pCursor, x, y,
-                pScreenPriv->colors[SOURCE_COLOR].pixel,
-                pScreenPriv->colors[MASK_COLOR].pixel))
-    {
-        miSpriteIsUp(pCursorInfo);
-        pCursorInfo->pScreen = pScreen;
-    }
-    miSpriteEnableDamage(pScreen, pScreenPriv);
-    DamageDrawInternal (pScreen, FALSE);
-}
-
-/*
- * compute the desired area of the screen to save
- */
-
-static void
-miSpriteComputeSaved (DeviceIntPtr pDev, ScreenPtr pScreen)
-{
-    miSpriteScreenPtr   pScreenPriv;
-    int		    x, y, w, h;
-    int		    wpad, hpad;
-    CursorPtr	    pCursor;
-    miCursorInfoPtr pCursorInfo;
-
-    if (!IsMaster(pDev) && !pDev->u.master)
-        return;
-
-    pScreenPriv = dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);
-    pCursorInfo = MISPRITE(pDev);
-
-    pCursor = pCursorInfo->pCursor;
-    x = pCursorInfo->x - (int)pCursor->bits->xhot;
-    y = pCursorInfo->y - (int)pCursor->bits->yhot;
-    w = pCursor->bits->width;
-    h = pCursor->bits->height;
-    wpad = SPRITE_PAD;
-    hpad = SPRITE_PAD;
-    pCursorInfo->saved.x1 = x - wpad;
-    pCursorInfo->saved.y1 = y - hpad;
-    pCursorInfo->saved.x2 = pCursorInfo->saved.x1 + w + wpad * 2;
-    pCursorInfo->saved.y2 = pCursorInfo->saved.y1 + h + hpad * 2;
-}
-
+/*

+ * misprite.c

+ *

+ * machine independent software sprite 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   <X11/Xproto.h>

+#include   "misc.h"

+#include   "pixmapstr.h"

+#include   "input.h"

+#include   "mi.h"

+#include   "cursorstr.h"

+#include   <X11/fonts/font.h>

+#include   "scrnintstr.h"

+#include   "colormapst.h"

+#include   "windowstr.h"

+#include   "gcstruct.h"

+#include   "mipointer.h"

+#include   "misprite.h"

+#include   "dixfontstr.h"

+#include   <X11/fonts/fontstruct.h>

+#include   "inputstr.h"

+#include   "damage.h"

+

+typedef struct {

+    CursorPtr	    pCursor;

+    int		    x;			/* cursor hotspot */

+    int		    y;

+    BoxRec	    saved;		/* saved area from the screen */

+    Bool	    isUp;		/* cursor in frame buffer */

+    Bool	    shouldBeUp;		/* cursor should be displayed */

+    WindowPtr	    pCacheWin;		/* window the cursor last seen in */

+    Bool	    isInCacheWin;

+    Bool	    checkPixels;	/* check colormap collision */

+    ScreenPtr       pScreen;

+} miCursorInfoRec, *miCursorInfoPtr;

+

+/*

+ * per screen information

+ */

+

+typedef struct {

+    /* screen procedures */

+    CloseScreenProcPtr			CloseScreen;

+    GetImageProcPtr			GetImage;

+    GetSpansProcPtr			GetSpans;

+    SourceValidateProcPtr		SourceValidate;

+    

+    /* window procedures */

+    CopyWindowProcPtr			CopyWindow;

+    

+    /* colormap procedures */

+    InstallColormapProcPtr		InstallColormap;

+    StoreColorsProcPtr			StoreColors;

+    

+    /* os layer procedures */

+    ScreenBlockHandlerProcPtr		BlockHandler;

+    

+    /* device cursor procedures */

+    DeviceCursorInitializeProcPtr       DeviceCursorInitialize;

+    DeviceCursorCleanupProcPtr          DeviceCursorCleanup;

+

+    xColorItem	    colors[2];

+    ColormapPtr     pInstalledMap;

+    ColormapPtr     pColormap;

+    VisualPtr	    pVisual;

+    miSpriteCursorFuncPtr    funcs;

+    DamagePtr	    pDamage;		/* damage tracking structure */

+    Bool            damageRegistered;

+} miSpriteScreenRec, *miSpriteScreenPtr;

+

+#define SOURCE_COLOR	0

+#define MASK_COLOR	1

+

+/*

+ * Overlap BoxPtr and Box elements

+ */

+#define BOX_OVERLAP(pCbox,X1,Y1,X2,Y2) \

+ 	(((pCbox)->x1 <= (X2)) && ((X1) <= (pCbox)->x2) && \

+	 ((pCbox)->y1 <= (Y2)) && ((Y1) <= (pCbox)->y2))

+

+/*

+ * Overlap BoxPtr, origins, and rectangle

+ */

+#define ORG_OVERLAP(pCbox,xorg,yorg,x,y,w,h) \

+    BOX_OVERLAP((pCbox),(x)+(xorg),(y)+(yorg),(x)+(xorg)+(w),(y)+(yorg)+(h))

+

+/*

+ * Overlap BoxPtr, origins and RectPtr

+ */

+#define ORGRECT_OVERLAP(pCbox,xorg,yorg,pRect) \

+    ORG_OVERLAP((pCbox),(xorg),(yorg),(pRect)->x,(pRect)->y, \

+		(int)((pRect)->width), (int)((pRect)->height))

+/*

+ * Overlap BoxPtr and horizontal span

+ */

+#define SPN_OVERLAP(pCbox,y,x,w) BOX_OVERLAP((pCbox),(x),(y),(x)+(w),(y))

+

+#define LINE_SORT(x1,y1,x2,y2) \

+{ int _t; \

+  if (x1 > x2) { _t = x1; x1 = x2; x2 = _t; } \

+  if (y1 > y2) { _t = y1; y1 = y2; y2 = _t; } }

+

+#define LINE_OVERLAP(pCbox,x1,y1,x2,y2,lw2) \

+    BOX_OVERLAP((pCbox), (x1)-(lw2), (y1)-(lw2), (x2)+(lw2), (y2)+(lw2))

+

+

+#define SPRITE_DEBUG_ENABLE 0

+#if SPRITE_DEBUG_ENABLE

+#define SPRITE_DEBUG(x)	ErrorF x

+#else

+#define SPRITE_DEBUG(x)

+#endif

+

+#define MISPRITE(dev) \

+    ((!IsMaster(dev) && !dev->u.master) ? \

+       (miCursorInfoPtr)dixLookupPrivate(&dev->devPrivates, miSpriteDevPrivatesKey) : \

+       (miCursorInfoPtr)dixLookupPrivate(&(GetMaster(dev, MASTER_POINTER))->devPrivates, miSpriteDevPrivatesKey))

+

+static void

+miSpriteDisableDamage(ScreenPtr pScreen, miSpriteScreenPtr pScreenPriv)

+{

+    if (pScreenPriv->damageRegistered) {

+	DamageUnregister (&(pScreen->GetScreenPixmap(pScreen)->drawable),

+			  pScreenPriv->pDamage);

+	pScreenPriv->damageRegistered = 0;

+    }

+}

+

+static void

+miSpriteEnableDamage(ScreenPtr pScreen, miSpriteScreenPtr pScreenPriv)

+{

+    if (!pScreenPriv->damageRegistered) {

+	pScreenPriv->damageRegistered = 1;

+	DamageRegister (&(pScreen->GetScreenPixmap(pScreen)->drawable),

+			pScreenPriv->pDamage);

+    }

+}

+

+static void

+miSpriteIsUp(miCursorInfoPtr pDevCursor)

+{

+    pDevCursor->isUp = TRUE;

+}

+

+static void

+miSpriteIsDown(miCursorInfoPtr pDevCursor)

+{

+    pDevCursor->isUp = FALSE;

+}

+

+/*

+ * screen wrappers

+ */

+

+static int miSpriteScreenKeyIndex;

+static DevPrivateKey miSpriteScreenKey = &miSpriteScreenKeyIndex;

+static int miSpriteDevPrivatesKeyIndex;

+static DevPrivateKey miSpriteDevPrivatesKey = &miSpriteDevPrivatesKeyIndex;

+

+static Bool	    miSpriteCloseScreen(int i, ScreenPtr pScreen);

+static void	    miSpriteGetImage(DrawablePtr pDrawable, int sx, int sy,

+				     int w, int h, unsigned int format,

+				     unsigned long planemask, char *pdstLine);

+static void	    miSpriteGetSpans(DrawablePtr pDrawable, int wMax,

+				     DDXPointPtr ppt, int *pwidth, int nspans,

+				     char *pdstStart);

+static void	    miSpriteSourceValidate(DrawablePtr pDrawable, int x, int y,

+					   int width, int height);

+static void	    miSpriteCopyWindow (WindowPtr pWindow,

+					DDXPointRec ptOldOrg,

+					RegionPtr prgnSrc);

+static void	    miSpriteBlockHandler(int i, pointer blockData,

+					 pointer pTimeout,

+					 pointer pReadMask);

+static void	    miSpriteInstallColormap(ColormapPtr pMap);

+static void	    miSpriteStoreColors(ColormapPtr pMap, int ndef,

+					xColorItem *pdef);

+

+static void	    miSpriteComputeSaved(DeviceIntPtr pDev,

+                                         ScreenPtr pScreen);

+

+static Bool         miSpriteDeviceCursorInitialize(DeviceIntPtr pDev,

+                                                   ScreenPtr pScreen);

+static void         miSpriteDeviceCursorCleanup(DeviceIntPtr pDev,

+                                                ScreenPtr pScreen);

+

+#define SCREEN_PROLOGUE(pScreen, field) ((pScreen)->field = \

+   ((miSpriteScreenPtr)dixLookupPrivate(&(pScreen)->devPrivates, \

+					miSpriteScreenKey))->field)

+#define SCREEN_EPILOGUE(pScreen, field)\

+    ((pScreen)->field = miSprite##field)

+

+/*

+ * pointer-sprite method table

+ */

+

+static Bool miSpriteRealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen,

+                                  CursorPtr pCursor);

+static Bool miSpriteUnrealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen,

+                                    CursorPtr pCursor);

+static void miSpriteSetCursor(DeviceIntPtr pDev, ScreenPtr pScreen,

+                              CursorPtr pCursor, int x, int y);

+static void miSpriteMoveCursor(DeviceIntPtr pDev, ScreenPtr pScreen,

+                               int x, int y);

+

+miPointerSpriteFuncRec miSpritePointerFuncs = {

+    miSpriteRealizeCursor,

+    miSpriteUnrealizeCursor,

+    miSpriteSetCursor,

+    miSpriteMoveCursor,

+    miSpriteDeviceCursorInitialize,

+    miSpriteDeviceCursorCleanup,

+};

+

+/*

+ * other misc functions

+ */

+

+static void miSpriteRemoveCursor(DeviceIntPtr pDev,

+                                 ScreenPtr pScreen);

+static void miSpriteSaveUnderCursor(DeviceIntPtr pDev,

+                                 ScreenPtr pScreen);

+static void miSpriteRestoreCursor(DeviceIntPtr pDev,

+                                 ScreenPtr pScreen);

+

+static void

+miSpriteReportDamage (DamagePtr pDamage, RegionPtr pRegion, void *closure)

+{

+    ScreenPtr		    pScreen = closure;

+    miSpriteScreenPtr	    pScreenPriv;

+    miCursorInfoPtr         pCursorInfo;

+    DeviceIntPtr            pDev;

+

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

+

+    for (pDev = inputInfo.devices; pDev; pDev = pDev->next)

+    {

+        if (DevHasCursor(pDev))

+        {

+            pCursorInfo = MISPRITE(pDev);

+

+            if (pCursorInfo->isUp &&

+                pCursorInfo->pScreen == pScreen &&

+                miRectIn(pRegion, &pCursorInfo->saved) != rgnOUT)

+            {

+                SPRITE_DEBUG(("Damage remove\n"));

+                miSpriteRemoveCursor (pDev, pScreen);

+            }

+        }

+    }

+}

+

+/*

+ * miSpriteInitialize -- called from device-dependent screen

+ * initialization proc after all of the function pointers have

+ * been stored in the screen structure.

+ */

+

+Bool

+miSpriteInitialize (ScreenPtr               pScreen,

+                    miSpriteCursorFuncPtr   cursorFuncs,

+                    miPointerScreenFuncPtr  screenFuncs)

+{

+    miSpriteScreenPtr	pScreenPriv;

+    VisualPtr		pVisual;

+

+    if (!DamageSetup (pScreen))

+	return FALSE;

+

+    pScreenPriv = malloc(sizeof (miSpriteScreenRec));

+    if (!pScreenPriv)

+	return FALSE;

+

+    pScreenPriv->pDamage = DamageCreate (miSpriteReportDamage,

+					 NULL,

+					 DamageReportRawRegion,

+					 TRUE,

+					 pScreen,

+					 pScreen);

+

+    if (!miPointerInitialize (pScreen, &miSpritePointerFuncs, screenFuncs,TRUE))

+    {

+	free(pScreenPriv);

+	return FALSE;

+    }

+    for (pVisual = pScreen->visuals;

+	 pVisual->vid != pScreen->rootVisual;

+	 pVisual++)

+	;

+    pScreenPriv->pVisual = pVisual;

+    pScreenPriv->CloseScreen = pScreen->CloseScreen;

+    pScreenPriv->GetImage = pScreen->GetImage;

+    pScreenPriv->GetSpans = pScreen->GetSpans;

+    pScreenPriv->SourceValidate = pScreen->SourceValidate;

+

+    pScreenPriv->CopyWindow = pScreen->CopyWindow;

+

+    pScreenPriv->InstallColormap = pScreen->InstallColormap;

+    pScreenPriv->StoreColors = pScreen->StoreColors;

+

+    pScreenPriv->BlockHandler = pScreen->BlockHandler;

+

+    pScreenPriv->DeviceCursorInitialize = pScreen->DeviceCursorInitialize;

+    pScreenPriv->DeviceCursorCleanup = pScreen->DeviceCursorCleanup;

+

+    pScreenPriv->pInstalledMap = NULL;

+    pScreenPriv->pColormap = NULL;

+    pScreenPriv->funcs = cursorFuncs;

+    pScreenPriv->colors[SOURCE_COLOR].red = 0;

+    pScreenPriv->colors[SOURCE_COLOR].green = 0;

+    pScreenPriv->colors[SOURCE_COLOR].blue = 0;

+    pScreenPriv->colors[MASK_COLOR].red = 0;

+    pScreenPriv->colors[MASK_COLOR].green = 0;

+    pScreenPriv->colors[MASK_COLOR].blue = 0;

+    pScreenPriv->damageRegistered = 0;

+

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

+

+    pScreen->CloseScreen = miSpriteCloseScreen;

+    pScreen->GetImage = miSpriteGetImage;

+    pScreen->GetSpans = miSpriteGetSpans;

+    pScreen->SourceValidate = miSpriteSourceValidate;

+

+    pScreen->CopyWindow = miSpriteCopyWindow;

+    pScreen->InstallColormap = miSpriteInstallColormap;

+    pScreen->StoreColors = miSpriteStoreColors;

+

+    pScreen->BlockHandler = miSpriteBlockHandler;

+

+    return TRUE;

+}

+

+/*

+ * Screen wrappers

+ */

+

+/*

+ * CloseScreen wrapper -- unwrap everything, free the private data

+ * and call the wrapped function

+ */

+

+static Bool

+miSpriteCloseScreen (int i, ScreenPtr pScreen)

+{

+    miSpriteScreenPtr   pScreenPriv;

+

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

+    pScreen->CloseScreen = pScreenPriv->CloseScreen;

+    pScreen->GetImage = pScreenPriv->GetImage;

+    pScreen->GetSpans = pScreenPriv->GetSpans;

+    pScreen->SourceValidate = pScreenPriv->SourceValidate;

+    pScreen->BlockHandler = pScreenPriv->BlockHandler;

+    pScreen->InstallColormap = pScreenPriv->InstallColormap;

+    pScreen->StoreColors = pScreenPriv->StoreColors;

+

+    DamageDestroy (pScreenPriv->pDamage);

+

+    free(pScreenPriv);

+

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

+}

+

+static void

+miSpriteGetImage (DrawablePtr pDrawable, int sx, int sy, int w, int h,

+                  unsigned int format, unsigned long planemask,

+                  char *pdstLine)

+{

+    ScreenPtr	    pScreen = pDrawable->pScreen;

+    miSpriteScreenPtr    pScreenPriv;

+    DeviceIntPtr    pDev;

+    miCursorInfoPtr pCursorInfo;

+

+    SCREEN_PROLOGUE (pScreen, GetImage);

+

+    if (pDrawable->type == DRAWABLE_WINDOW)

+    {

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

+        for(pDev = inputInfo.devices; pDev; pDev = pDev->next)

+        {

+            if (DevHasCursor(pDev))

+            {

+                 pCursorInfo = MISPRITE(pDev);

+                 if (pCursorInfo->isUp && pCursorInfo->pScreen == pScreen &&

+                      ORG_OVERLAP(&pCursorInfo->saved,pDrawable->x,pDrawable->y,

+                                  sx, sy, w, h))

+                 {

+                     SPRITE_DEBUG (("GetImage remove\n"));

+                     miSpriteRemoveCursor (pDev, pScreen);

+                 }

+            }

+        }

+    }

+

+    (*pScreen->GetImage) (pDrawable, sx, sy, w, h,

+			  format, planemask, pdstLine);

+

+    SCREEN_EPILOGUE (pScreen, GetImage);

+}

+

+static void

+miSpriteGetSpans (DrawablePtr pDrawable, int wMax, DDXPointPtr ppt,

+                  int *pwidth, int nspans, char *pdstStart)

+{

+    ScreenPtr		    pScreen = pDrawable->pScreen;

+    miSpriteScreenPtr	    pScreenPriv;

+    DeviceIntPtr            pDev;

+    miCursorInfoPtr         pCursorInfo;

+

+    SCREEN_PROLOGUE (pScreen, GetSpans);

+

+    if (pDrawable->type == DRAWABLE_WINDOW)

+    {

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

+

+        for(pDev = inputInfo.devices; pDev; pDev = pDev->next)

+        {

+            if (DevHasCursor(pDev))

+            {

+                pCursorInfo = MISPRITE(pDev);

+

+                if (pCursorInfo->isUp && pCursorInfo->pScreen == pScreen)

+                {

+                    DDXPointPtr    pts;

+                    int    	       *widths;

+                    int    	       nPts;

+                    int    	       xorg,

+                                   yorg;

+

+                    xorg = pDrawable->x;

+                    yorg = pDrawable->y;

+

+                    for (pts = ppt, widths = pwidth, nPts = nspans;

+                            nPts--;

+                            pts++, widths++)

+                    {

+                        if (SPN_OVERLAP(&pCursorInfo->saved,pts->y+yorg,

+                                    pts->x+xorg,*widths))

+                        {

+                            SPRITE_DEBUG (("GetSpans remove\n"));

+                            miSpriteRemoveCursor (pDev, pScreen);

+                            break;

+                        }

+                    }

+                }

+            }

+        }

+    }

+

+    (*pScreen->GetSpans) (pDrawable, wMax, ppt, pwidth, nspans, pdstStart);

+

+    SCREEN_EPILOGUE (pScreen, GetSpans);

+}

+

+static void

+miSpriteSourceValidate (DrawablePtr pDrawable, int x, int y, int width,

+                        int height)

+{

+    ScreenPtr		    pScreen = pDrawable->pScreen;

+    miSpriteScreenPtr	    pScreenPriv;

+    DeviceIntPtr            pDev;

+    miCursorInfoPtr         pCursorInfo;

+

+    SCREEN_PROLOGUE (pScreen, SourceValidate);

+

+    if (pDrawable->type == DRAWABLE_WINDOW)

+    {

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

+

+	for(pDev = inputInfo.devices; pDev; pDev = pDev->next)

+	{

+	    if (DevHasCursor(pDev))

+	    {

+		pCursorInfo = MISPRITE(pDev);

+		if (pCursorInfo && pCursorInfo->isUp && pCursorInfo->pScreen == pScreen &&

+		    ORG_OVERLAP(&pCursorInfo->saved, pDrawable->x, pDrawable->y,

+				x, y, width, height))

+		{

+		    SPRITE_DEBUG (("SourceValidate remove\n"));

+		    miSpriteRemoveCursor (pDev, pScreen);

+		}

+	    }

+	}

+    }

+

+    if (pScreen->SourceValidate)

+	(*pScreen->SourceValidate) (pDrawable, x, y, width, height);

+

+    SCREEN_EPILOGUE (pScreen, SourceValidate);

+}

+

+static void

+miSpriteCopyWindow (WindowPtr pWindow, DDXPointRec ptOldOrg, RegionPtr prgnSrc)

+{

+    ScreenPtr	pScreen = pWindow->drawable.pScreen;

+    miSpriteScreenPtr	    pScreenPriv;

+    DeviceIntPtr            pDev;

+    miCursorInfoPtr         pCursorInfo;

+

+    SCREEN_PROLOGUE (pScreen, CopyWindow);

+

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

+

+    for(pDev = inputInfo.devices; pDev; pDev = pDev->next)

+    {

+        if (DevHasCursor(pDev))

+        {

+            pCursorInfo = MISPRITE(pDev);

+            /*

+             * Damage will take care of destination check

+             */

+            if (pCursorInfo && pCursorInfo->isUp && pCursorInfo->pScreen == pScreen &&

+                    miRectIn(prgnSrc, &pCursorInfo->saved) != rgnOUT)

+            {

+                SPRITE_DEBUG (("CopyWindow remove\n"));

+                miSpriteRemoveCursor (pDev, pScreen);

+            }

+        }

+    }

+

+    (*pScreen->CopyWindow) (pWindow, ptOldOrg, prgnSrc);

+    SCREEN_EPILOGUE (pScreen, CopyWindow);

+}

+

+static void

+miSpriteBlockHandler (int i, pointer blockData, pointer pTimeout,

+                      pointer pReadmask)

+{

+    ScreenPtr		pScreen = screenInfo.screens[i];

+    miSpriteScreenPtr	pPriv;

+    DeviceIntPtr            pDev;

+    miCursorInfoPtr         pCursorInfo;

+

+    pPriv = dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);

+    SCREEN_PROLOGUE(pScreen, BlockHandler);

+

+    (*pScreen->BlockHandler) (i, blockData, pTimeout, pReadmask);

+

+    SCREEN_EPILOGUE(pScreen, BlockHandler);

+

+    for(pDev = inputInfo.devices; pDev; pDev = pDev->next)

+    {

+        if (DevHasCursor(pDev))

+        {

+            pCursorInfo = MISPRITE(pDev);

+            if (pCursorInfo && !pCursorInfo->isUp

+                    && pCursorInfo->pScreen == pScreen

+                    && pCursorInfo->shouldBeUp)

+            {

+                SPRITE_DEBUG (("BlockHandler restore\n"));

+                miSpriteSaveUnderCursor (pDev, pScreen);

+            }

+        }

+    }

+    for(pDev = inputInfo.devices; pDev; pDev = pDev->next)

+    {

+        if (DevHasCursor(pDev))

+        {

+            pCursorInfo = MISPRITE(pDev);

+            if (pCursorInfo && !pCursorInfo->isUp &&

+                    pCursorInfo->pScreen == pScreen &&

+                    pCursorInfo->shouldBeUp)

+            {

+                SPRITE_DEBUG (("BlockHandler restore\n"));

+                miSpriteRestoreCursor (pDev, pScreen);

+            }

+        }

+    }

+}

+

+static void

+miSpriteInstallColormap (ColormapPtr pMap)

+{

+    ScreenPtr		pScreen = pMap->pScreen;

+    miSpriteScreenPtr	pPriv;

+

+    pPriv = dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);

+    SCREEN_PROLOGUE(pScreen, InstallColormap);

+

+    (*pScreen->InstallColormap) (pMap);

+

+    SCREEN_EPILOGUE(pScreen, InstallColormap);

+

+    /* InstallColormap can be called before devices are initialized. */

+    pPriv->pInstalledMap = pMap;

+    if (pPriv->pColormap != pMap)

+    {

+        DeviceIntPtr pDev;

+        miCursorInfoPtr     pCursorInfo;

+        for (pDev = inputInfo.devices; pDev; pDev = pDev->next)

+        {

+            if (DevHasCursor(pDev))

+            {

+                pCursorInfo = MISPRITE(pDev);

+                if (pCursorInfo)

+                {

+                  pCursorInfo->checkPixels = TRUE;

+                  if (pCursorInfo->isUp && pCursorInfo->pScreen == pScreen)

+                      miSpriteRemoveCursor(pDev, pScreen);

+                }

+            }

+        }

+

+    }

+}

+

+static void

+miSpriteStoreColors (ColormapPtr pMap, int ndef, xColorItem *pdef)

+{

+    ScreenPtr		pScreen = pMap->pScreen;

+    miSpriteScreenPtr	pPriv;

+    int			i;

+    int			updated;

+    VisualPtr		pVisual;

+    DeviceIntPtr        pDev;

+    miCursorInfoPtr     pCursorInfo;

+

+    pPriv = dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);

+    SCREEN_PROLOGUE(pScreen, StoreColors);

+

+    (*pScreen->StoreColors) (pMap, ndef, pdef);

+

+    SCREEN_EPILOGUE(pScreen, StoreColors);

+

+    if (pPriv->pColormap == pMap)

+    {

+        updated = 0;

+        pVisual = pMap->pVisual;

+        if (pVisual->class == DirectColor)

+        {

+            /* Direct color - match on any of the subfields */

+

+#define MaskMatch(a,b,mask) (((a) & (pVisual->mask)) == ((b) & (pVisual->mask)))

+

+#define UpdateDAC(dev, plane,dac,mask) {\

+    if (MaskMatch (dev->colors[plane].pixel,pdef[i].pixel,mask)) {\

+	dev->colors[plane].dac = pdef[i].dac; \

+	updated = 1; \

+    } \

+}

+

+#define CheckDirect(dev, plane) \

+	    UpdateDAC(dev, plane,red,redMask) \

+	    UpdateDAC(dev, plane,green,greenMask) \

+	    UpdateDAC(dev, plane,blue,blueMask)

+

+            for (i = 0; i < ndef; i++)

+            {

+                CheckDirect (pPriv, SOURCE_COLOR)

+                CheckDirect (pPriv, MASK_COLOR)

+            }

+        }

+        else

+        {

+            /* PseudoColor/GrayScale - match on exact pixel */

+            for (i = 0; i < ndef; i++)

+            {

+                if (pdef[i].pixel ==

+                        pPriv->colors[SOURCE_COLOR].pixel)

+                {

+                    pPriv->colors[SOURCE_COLOR] = pdef[i];

+                    if (++updated == 2)

+                        break;

+                }

+                if (pdef[i].pixel ==

+                        pPriv->colors[MASK_COLOR].pixel)

+                {

+                    pPriv->colors[MASK_COLOR] = pdef[i];

+                    if (++updated == 2)

+                        break;

+                }

+            }

+        }

+        if (updated)

+        {

+            for(pDev = inputInfo.devices; pDev; pDev = pDev->next)

+            {

+                if (DevHasCursor(pDev))

+                {

+                    pCursorInfo = MISPRITE(pDev);

+                    pCursorInfo->checkPixels = TRUE;

+                    if (pCursorInfo->isUp && pCursorInfo->pScreen == pScreen)

+                        miSpriteRemoveCursor (pDev, pScreen);

+                }

+            }

+        }

+    }

+}

+

+static void

+miSpriteFindColors (miCursorInfoPtr pDevCursor, ScreenPtr pScreen)

+{

+    miSpriteScreenPtr   pScreenPriv =

+	dixLookupPrivate(&pScreen->devPrivates, miSpriteScreenKey);

+    CursorPtr		pCursor;

+    xColorItem		*sourceColor, *maskColor;

+

+    pCursor = pDevCursor->pCursor;

+    sourceColor = &pScreenPriv->colors[SOURCE_COLOR];

+    maskColor = &pScreenPriv->colors[MASK_COLOR];

+    if (pScreenPriv->pColormap != pScreenPriv->pInstalledMap ||

+	!(pCursor->foreRed == sourceColor->red &&

+	  pCursor->foreGreen == sourceColor->green &&

+          pCursor->foreBlue == sourceColor->blue &&

+	  pCursor->backRed == maskColor->red &&

+	  pCursor->backGreen == maskColor->green &&

+	  pCursor->backBlue == maskColor->blue))

+    {

+	pScreenPriv->pColormap = pScreenPriv->pInstalledMap;

+	sourceColor->red = pCursor->foreRed;

+	sourceColor->green = pCursor->foreGreen;

+	sourceColor->blue = pCursor->foreBlue;

+	FakeAllocColor (pScreenPriv->pColormap, sourceColor);

+	maskColor->red = pCursor->backRed;

+	maskColor->green = pCursor->backGreen;

+	maskColor->blue = pCursor->backBlue;

+	FakeAllocColor (pScreenPriv->pColormap, maskColor);

+	/* "free" the pixels right away, don't let this confuse you */

+	FakeFreeColor(pScreenPriv->pColormap, sourceColor->pixel);

+	FakeFreeColor(pScreenPriv->pColormap, maskColor->pixel);

+    }

+

+    pDevCursor->checkPixels = FALSE;

+

+}

+

+/*

+ * miPointer interface routines

+ */

+

+#define SPRITE_PAD  8

+

+static Bool

+miSpriteRealizeCursor (DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor)

+{

+    miSpriteScreenPtr	pScreenPriv;

+    miCursorInfoPtr pCursorInfo;

+

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

+    if (!IsMaster(pDev) && !pDev->u.master)

+        return FALSE;

+

+    pCursorInfo = MISPRITE(pDev);

+

+    if (pCursor == pCursorInfo->pCursor)

+	pCursorInfo->checkPixels = TRUE;

+

+    return (*pScreenPriv->funcs->RealizeCursor) (pScreen, pCursor);

+}

+

+static Bool

+miSpriteUnrealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor)

+{

+    miSpriteScreenPtr	pScreenPriv;

+

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

+    return (*pScreenPriv->funcs->UnrealizeCursor) (pScreen, pCursor);

+}

+

+static void

+miSpriteSetCursor (DeviceIntPtr pDev, ScreenPtr pScreen,

+                   CursorPtr pCursor, int x, int y)

+{

+    miSpriteScreenPtr	pScreenPriv;

+    miCursorInfoPtr pPointer;

+

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

+

+    if (!IsMaster(pDev) && !pDev->u.master)

+        return;

+

+    pPointer = MISPRITE(pDev);

+

+    if (!pCursor)

+    {

+    	pPointer->shouldBeUp = FALSE;

+    	if (pPointer->isUp)

+	    miSpriteRemoveCursor (pDev, pScreen);

+	pPointer->pCursor = 0;

+	return;

+    }

+    pPointer->shouldBeUp = TRUE;

+    if (pPointer->x == x &&

+	pPointer->y == y &&

+	pPointer->pCursor == pCursor &&

+	!pPointer->checkPixels)

+    {

+	return;

+    }

+    pPointer->x = x;

+    pPointer->y = y;

+    pPointer->pCacheWin = NullWindow;

+    if (pPointer->checkPixels || pPointer->pCursor != pCursor)

+    {

+	pPointer->pCursor = pCursor;

+	miSpriteFindColors (pPointer, pScreen);

+    }

+    if (pPointer->isUp) {

+#if 0

+        /* FIXME: Disabled for MPX, should be rewritten */

+	int	sx, sy;

+	/*

+	 * check to see if the old saved region

+	 * encloses the new sprite, in which case we use

+	 * the flicker-free MoveCursor primitive.

+	 */

+	sx = pointer->x - (int)pCursor->bits->xhot;

+	sy = pointer->y - (int)pCursor->bits->yhot;

+	if (sx + (int) pCursor->bits->width >= pointer->saved.x1 &&

+	    sx < pointer->saved.x2 &&

+	    sy + (int) pCursor->bits->height >= pointer->saved.y1 &&

+	    sy < pointer->saved.y2 &&

+	    (int) pCursor->bits->width + (2 * SPRITE_PAD) ==

+		pointer->saved.x2 - pointer->saved.x1 &&

+	    (int) pCursor->bits->height + (2 * SPRITE_PAD) ==

+		pointer->saved.y2 - pointer->saved.y1

+	    )

+	{

+	    DamageDrawInternal (pScreen, TRUE);

+	    miSpriteIsDown(pCursorInfo);

+	    if (!(sx >= pointer->saved.x1 &&

+                  sx + (int)pCursor->bits->width < pointer->saved.x2

+                  && sy >= pointer->saved.y1 &&

+                  sy + (int)pCursor->bits->height <

+                                pointer->saved.y2))

+            {

+		int oldx1, oldy1, dx, dy;

+

+		oldx1 = pointer->saved.x1;

+		oldy1 = pointer->saved.y1;

+		dx = oldx1 - (sx - SPRITE_PAD);

+		dy = oldy1 - (sy - SPRITE_PAD);

+		pointer->saved.x1 -= dx;

+		pointer->saved.y1 -= dy;

+		pointer->saved.x2 -= dx;

+		pointer->saved.y2 -= dy;

+		(void) (*pScreenPriv->funcs->ChangeSave) (pScreen,

+				pointer->saved.x1,

+ 				pointer->saved.y1,

+                                pointer->saved.x2 -

+                                pointer->saved.x1,

+                                pointer->saved.y2 -

+                                pointer->saved.y1,

+				dx, dy);

+	    }

+	    (void) (*pScreenPriv->funcs->MoveCursor) (pScreen, pCursor,

+				  pointer->saved.x1,

+ 				  pointer->saved.y1,

+                                  pointer->saved.x2 -

+                                  pointer->saved.x1,

+                                  pointer->saved.y2 -

+                                  pointer->saved.y1,

+				  sx - pointer->saved.x1,

+				  sy - pointer->saved.y1,

+				  pointer->colors[SOURCE_COLOR].pixel,

+				  pointer->colors[MASK_COLOR].pixel);

+	    miSpriteIsUp(pCursorInfo);

+	    DamageDrawInternal (pScreen, FALSE);

+	}

+	else

+#endif

+	{

+	    SPRITE_DEBUG (("SetCursor remove %d\n", pDev->id));

+	    miSpriteRemoveCursor (pDev, pScreen);

+	}

+    }

+

+    if (!pPointer->isUp && pPointer->pCursor)

+    {

+	SPRITE_DEBUG (("SetCursor restore %d\n", pDev->id));

+        miSpriteSaveUnderCursor(pDev, pScreen);

+	miSpriteRestoreCursor (pDev, pScreen);

+    }

+

+}

+

+static void

+miSpriteMoveCursor (DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y)

+{

+    miSpriteScreenPtr	pScreenPriv;

+    CursorPtr pCursor;

+

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

+    if (!IsMaster(pDev) && !pDev->u.master)

+        return;

+

+    pCursor = MISPRITE(pDev)->pCursor;

+

+    miSpriteSetCursor (pDev, pScreen, pCursor, x, y);

+}

+

+

+static Bool

+miSpriteDeviceCursorInitialize(DeviceIntPtr pDev, ScreenPtr pScreen)

+{

+    miSpriteScreenPtr pScreenPriv;

+    miCursorInfoPtr pCursorInfo;

+    int ret = FALSE;

+

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

+

+    pCursorInfo = malloc(sizeof(miCursorInfoRec));

+    if (!pCursorInfo)

+        return FALSE;

+

+    pCursorInfo->pCursor = NULL;

+    pCursorInfo->x = 0;

+    pCursorInfo->y = 0;

+    pCursorInfo->isUp = FALSE;

+    pCursorInfo->shouldBeUp = FALSE;

+    pCursorInfo->pCacheWin = NullWindow;

+    pCursorInfo->isInCacheWin = FALSE;

+    pCursorInfo->checkPixels = TRUE;

+    pCursorInfo->pScreen = FALSE;

+

+    ret = (*pScreenPriv->funcs->DeviceCursorInitialize)(pDev, pScreen);

+    if (!ret)

+    {

+        free(pCursorInfo);

+        pCursorInfo = NULL;

+    }

+    dixSetPrivate(&pDev->devPrivates, miSpriteDevPrivatesKey, pCursorInfo);

+    return ret;

+}

+

+static void

+miSpriteDeviceCursorCleanup(DeviceIntPtr pDev, ScreenPtr pScreen)

+{

+    if (DevHasCursor(pDev))

+    {

+        miSpriteScreenPtr pScreenPriv;

+        pScreenPriv = dixLookupPrivate(&pScreen->devPrivates,

+                                       miSpriteScreenKey);

+

+        (*pScreenPriv->funcs->DeviceCursorCleanup)(pDev, pScreen);

+    }

+}

+

+/*

+ * undraw/draw cursor

+ */

+

+static void

+miSpriteRemoveCursor (DeviceIntPtr pDev, ScreenPtr pScreen)

+{

+    miSpriteScreenPtr   pScreenPriv;

+    miCursorInfoPtr     pCursorInfo;

+

+

+    if (!IsMaster(pDev) && !pDev->u.master)

+        return;

+

+    DamageDrawInternal (pScreen, TRUE);

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

+    pCursorInfo = MISPRITE(pDev);

+

+    miSpriteIsDown(pCursorInfo);

+    pCursorInfo->pCacheWin = NullWindow;

+    miSpriteDisableDamage(pScreen, pScreenPriv);

+    if (!(*pScreenPriv->funcs->RestoreUnderCursor) (pDev,

+                                         pScreen,

+					 pCursorInfo->saved.x1,

+                                         pCursorInfo->saved.y1,

+                                         pCursorInfo->saved.x2 -

+                                         pCursorInfo->saved.x1,

+                                         pCursorInfo->saved.y2 -

+                                         pCursorInfo->saved.y1))

+    {

+	miSpriteIsUp(pCursorInfo);

+    }

+    miSpriteEnableDamage(pScreen, pScreenPriv);

+    DamageDrawInternal (pScreen, FALSE);

+}

+

+/*

+ * Called from the block handler, saves area under cursor

+ * before waiting for something to do.

+ */

+

+static void

+miSpriteSaveUnderCursor(DeviceIntPtr pDev, ScreenPtr pScreen)

+{

+    miSpriteScreenPtr   pScreenPriv;

+    int			x, y;

+    CursorPtr		pCursor;

+    miCursorInfoPtr     pCursorInfo;

+

+    if (!IsMaster(pDev) && !pDev->u.master)

+        return;

+

+    DamageDrawInternal (pScreen, TRUE);

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

+    pCursorInfo = MISPRITE(pDev);

+

+    miSpriteComputeSaved (pDev, pScreen);

+    pCursor = pCursorInfo->pCursor;

+

+    x = pCursorInfo->x - (int)pCursor->bits->xhot;

+    y = pCursorInfo->y - (int)pCursor->bits->yhot;

+    miSpriteDisableDamage(pScreen, pScreenPriv);

+

+    (*pScreenPriv->funcs->SaveUnderCursor) (pDev,

+                                      pScreen,

+				      pCursorInfo->saved.x1,

+				      pCursorInfo->saved.y1,

+                                      pCursorInfo->saved.x2 -

+                                      pCursorInfo->saved.x1,

+                                      pCursorInfo->saved.y2 -

+                                      pCursorInfo->saved.y1);

+    SPRITE_DEBUG(("SaveUnderCursor %d\n", pDev->id));

+    miSpriteEnableDamage(pScreen, pScreenPriv);

+    DamageDrawInternal (pScreen, FALSE);

+}

+

+

+/*

+ * Called from the block handler, restores the cursor

+ * before waiting for something to do.

+ */

+

+static void

+miSpriteRestoreCursor (DeviceIntPtr pDev, ScreenPtr pScreen)

+{

+    miSpriteScreenPtr   pScreenPriv;

+    int			x, y;

+    CursorPtr		pCursor;

+    miCursorInfoPtr     pCursorInfo;

+

+    if (!IsMaster(pDev) && !pDev->u.master)

+        return;

+

+    DamageDrawInternal (pScreen, TRUE);

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

+    pCursorInfo = MISPRITE(pDev);

+

+    miSpriteComputeSaved (pDev, pScreen);

+    pCursor = pCursorInfo->pCursor;

+

+    x = pCursorInfo->x - (int)pCursor->bits->xhot;

+    y = pCursorInfo->y - (int)pCursor->bits->yhot;

+    miSpriteDisableDamage(pScreen, pScreenPriv);

+    SPRITE_DEBUG(("RestoreCursor %d\n", pDev->id));

+    if (pCursorInfo->checkPixels)

+        miSpriteFindColors (pCursorInfo, pScreen);

+    if ((*pScreenPriv->funcs->PutUpCursor) (pDev, pScreen,

+                pCursor, x, y,

+                pScreenPriv->colors[SOURCE_COLOR].pixel,

+                pScreenPriv->colors[MASK_COLOR].pixel))

+    {

+        miSpriteIsUp(pCursorInfo);

+        pCursorInfo->pScreen = pScreen;

+    }

+    miSpriteEnableDamage(pScreen, pScreenPriv);

+    DamageDrawInternal (pScreen, FALSE);

+}

+

+/*

+ * compute the desired area of the screen to save

+ */

+

+static void

+miSpriteComputeSaved (DeviceIntPtr pDev, ScreenPtr pScreen)

+{

+    miSpriteScreenPtr   pScreenPriv;

+    int		    x, y, w, h;

+    int		    wpad, hpad;

+    CursorPtr	    pCursor;

+    miCursorInfoPtr pCursorInfo;

+

+    if (!IsMaster(pDev) && !pDev->u.master)

+        return;

+

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

+    pCursorInfo = MISPRITE(pDev);

+

+    pCursor = pCursorInfo->pCursor;

+    x = pCursorInfo->x - (int)pCursor->bits->xhot;

+    y = pCursorInfo->y - (int)pCursor->bits->yhot;

+    w = pCursor->bits->width;

+    h = pCursor->bits->height;

+    wpad = SPRITE_PAD;

+    hpad = SPRITE_PAD;

+    pCursorInfo->saved.x1 = x - wpad;

+    pCursorInfo->saved.y1 = y - hpad;

+    pCursorInfo->saved.x2 = pCursorInfo->saved.x1 + w + wpad * 2;

+    pCursorInfo->saved.y2 = pCursorInfo->saved.y1 + h + hpad * 2;

+}

+