+++ /dev/null
-/************************************************************
-
-Copyright (c) 1989 X Consortium
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice 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
-X CONSORTIUM 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 X Consortium 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 X Consortium.
-
-********************************************************/
-
-/* $XConsortium: mbuf.c /main/25 1996/12/02 10:19:23 lehors $ */
-/* $XFree86: xc/programs/Xserver/Xext/mbuf.c,v 3.3 1997/01/18 06:52:58 dawes Exp $ */
-#define NEED_REPLIES
-#define NEED_EVENTS
-#include <stdio.h>
-#include "X.h"
-#include "Xproto.h"
-#include "window.h"
-#include "os.h"
-#include "windowstr.h"
-#include "scrnintstr.h"
-#include "pixmapstr.h"
-#include "extnsionst.h"
-#include "dixstruct.h"
-#include "resource.h"
-#include "opaque.h"
-#define _MULTIBUF_SERVER_ /* don't want Xlib structures */
-#include "regionstr.h"
-#include "gcstruct.h"
-#include "inputstr.h"
-#include "multibufst.h"
-#if !defined(WIN32) && !defined(MINIX) && !defined(Lynx)
-#include <sys/time.h>
-#endif
-
-/* given an OtherClientPtr obj, get the ClientPtr */
-#define rClient(obj) (clients[CLIENT_ID((obj)->resource)])
-
-/* given a MultibufferPtr b, get the ClientPtr */
-#define bClient(b) (clients[CLIENT_ID(b->pPixmap->drawable.id)])
-
-#define ValidEventMasks (ExposureMask|MultibufferClobberNotifyMask|MultibufferUpdateNotifyMask)
-
-static unsigned char MultibufferReqCode;
-static int MultibufferEventBase;
-static int MultibufferErrorBase;
-int MultibufferScreenIndex = -1;
-int MultibufferWindowIndex = -1;
-
-static void PerformDisplayRequest (
-#if NeedFunctionPrototypes
- MultibuffersPtr * /* ppMultibuffers */,
- MultibufferPtr * /* pMultibuffer */,
- int /* nbuf */
-#endif
- );
-static Bool QueueDisplayRequest (
-#if NeedFunctionPrototypes
- ClientPtr /* client */,
- TimeStamp /* activateTime */
-#endif
- );
-
-static void BumpTimeStamp (
-#if NeedFunctionPrototypes
- TimeStamp * /* ts */,
- CARD32 /* inc */
-#endif
- );
-
-static void AliasMultibuffer (
-#if NeedFunctionPrototypes
- MultibuffersPtr /* pMultibuffers */,
- int /* i */
-#endif
- );
-static void RecalculateMultibufferOtherEvents (
-#if NeedFunctionPrototypes
- MultibufferPtr /* pMultibuffer */
-#endif
- );
-static int EventSelectForMultibuffer(
-#if NeedFunctionPrototypes
- MultibufferPtr /* pMultibuffer */,
- ClientPtr /* client */,
- Mask /* mask */
-#endif
- );
-
-/*
- * The Pixmap associated with a buffer can be found as a resource
- * with this type
- */
-RESTYPE MultibufferDrawableResType;
-static int MultibufferDrawableDelete (
-#if NeedFunctionPrototypes
- pointer /* value */,
- XID /* id */
-#endif
- );
-/*
- * The per-buffer data can be found as a resource with this type.
- * the resource id of the per-buffer data is the same as the resource
- * id of the pixmap
- */
-static RESTYPE MultibufferResType;
-static int MultibufferDelete (
-#if NeedFunctionPrototypes
- pointer /* value */,
- XID /* id */
-#endif
- );
-
-/*
- * The per-window data can be found as a resource with this type,
- * using the window resource id
- */
-static RESTYPE MultibuffersResType;
-static int MultibuffersDelete (
-#if NeedFunctionPrototypes
- pointer /* value */,
- XID /* id */
-#endif
- );
-
-/*
- * Clients other than the buffer creator attach event masks in
- * OtherClient structures; each has a resource of this type.
- */
-static RESTYPE OtherClientResType;
-static int OtherClientDelete (
-#if NeedFunctionPrototypes
- pointer /* value */,
- XID /* id */
-#endif
- );
-
-/****************
- * MultibufferExtensionInit
- *
- * Called from InitExtensions in main()
- *
- ****************/
-
-extern DISPATCH_PROC(ProcGetBufferAttributes);
-
-static DISPATCH_PROC(ProcClearImageBufferArea);
-static DISPATCH_PROC(ProcCreateImageBuffers);
-static DISPATCH_PROC(ProcDestroyImageBuffers);
-static DISPATCH_PROC(ProcDisplayImageBuffers);
-static DISPATCH_PROC(ProcGetBufferInfo);
-static DISPATCH_PROC(ProcGetBufferVersion);
-static DISPATCH_PROC(ProcGetMBufferAttributes);
-static DISPATCH_PROC(ProcMultibufferDispatch);
-static DISPATCH_PROC(ProcSetBufferAttributes);
-static DISPATCH_PROC(ProcSetMBufferAttributes);
-static DISPATCH_PROC(SProcClearImageBufferArea);
-static DISPATCH_PROC(SProcCreateImageBuffers);
-static DISPATCH_PROC(SProcDestroyImageBuffers);
-static DISPATCH_PROC(SProcDisplayImageBuffers);
-static DISPATCH_PROC(SProcGetBufferAttributes);
-static DISPATCH_PROC(SProcGetBufferInfo);
-static DISPATCH_PROC(SProcGetBufferVersion);
-static DISPATCH_PROC(SProcGetMBufferAttributes);
-static DISPATCH_PROC(SProcMultibufferDispatch);
-static DISPATCH_PROC(SProcSetBufferAttributes);
-static DISPATCH_PROC(SProcSetMBufferAttributes);
-
-static void MultibufferResetProc(
-#if NeedFunctionPrototypes
- ExtensionEntry * /* extEntry */
-#endif
- );
-static void SClobberNotifyEvent(
-#if NeedFunctionPrototypes
- xMbufClobberNotifyEvent * /* from */,
- xMbufClobberNotifyEvent * /* to */
-# endif
- );
-static void SUpdateNotifyEvent(
-#if NeedFunctionPrototypes
- xMbufUpdateNotifyEvent * /* from */,
- xMbufUpdateNotifyEvent * /* to */
-#endif
- );
-static Bool MultibufferPositionWindow(
-#if NeedFunctionPrototypes
- WindowPtr /* pWin */,
- int /* x */,
- int /* y */
-#endif
- );
-
-static void SetupBackgroundPainter (
-#if NeedFunctionPrototypes
- WindowPtr /* pWin */,
- GCPtr /* pGC */
-#endif
- );
-
-static int DeliverEventsToMultibuffer (
-#if NeedFunctionPrototypes
- MultibufferPtr /* pMultibuffer */,
- xEvent * /* pEvents */,
- int /* count */,
- Mask /* filter */
-#endif
- );
-
-void
-MultibufferExtensionInit()
-{
- ExtensionEntry *extEntry;
- int i, j;
- ScreenPtr pScreen;
- MultibufferScreenPtr pMultibufferScreen;
-
- /*
- * allocate private pointers in windows and screens. Allocating
- * window privates may seem like an unnecessary expense, but every
- * PositionWindow call must check to see if the window is
- * multi-buffered; a resource lookup is too expensive.
- */
- MultibufferScreenIndex = AllocateScreenPrivateIndex ();
- if (MultibufferScreenIndex < 0)
- return;
- MultibufferWindowIndex = AllocateWindowPrivateIndex ();
- for (i = 0; i < screenInfo.numScreens; i++)
- {
- pScreen = screenInfo.screens[i];
- if (!AllocateWindowPrivate (pScreen, MultibufferWindowIndex, 0) ||
- !(pMultibufferScreen = (MultibufferScreenPtr) xalloc (sizeof (MultibufferScreenRec))))
- {
- for (j = 0; j < i; j++)
- xfree (screenInfo.screens[j]->devPrivates[MultibufferScreenIndex].ptr);
- return;
- }
- pScreen->devPrivates[MultibufferScreenIndex].ptr = (pointer) pMultibufferScreen;
- /*
- * wrap PositionWindow to resize the pixmap when the window
- * changes size
- */
- pMultibufferScreen->PositionWindow = pScreen->PositionWindow;
- pScreen->PositionWindow = MultibufferPositionWindow;
- }
- /*
- * create the resource types
- */
- MultibufferDrawableResType =
- CreateNewResourceType(MultibufferDrawableDelete)|RC_CACHED|RC_DRAWABLE;
- MultibufferResType = CreateNewResourceType(MultibufferDelete);
- MultibuffersResType = CreateNewResourceType(MultibuffersDelete);
- OtherClientResType = CreateNewResourceType(OtherClientDelete);
- if (MultibufferDrawableResType && MultibufferResType &&
- MultibuffersResType && OtherClientResType &&
- (extEntry = AddExtension(MULTIBUFFER_PROTOCOL_NAME,
- MultibufferNumberEvents,
- MultibufferNumberErrors,
- ProcMultibufferDispatch, SProcMultibufferDispatch,
- MultibufferResetProc, StandardMinorOpcode)))
- {
- MultibufferReqCode = (unsigned char)extEntry->base;
- MultibufferEventBase = extEntry->eventBase;
- MultibufferErrorBase = extEntry->errorBase;
- EventSwapVector[MultibufferEventBase + MultibufferClobberNotify] = (EventSwapPtr) SClobberNotifyEvent;
- EventSwapVector[MultibufferEventBase + MultibufferUpdateNotify] = (EventSwapPtr) SUpdateNotifyEvent;
- }
-}
-
-/*ARGSUSED*/
-static void
-MultibufferResetProc (extEntry)
-ExtensionEntry *extEntry;
-{
- int i;
- ScreenPtr pScreen;
- MultibufferScreenPtr pMultibufferScreen;
-
- if (MultibufferScreenIndex < 0)
- return;
- for (i = 0; i < screenInfo.numScreens; i++)
- {
- pScreen = screenInfo.screens[i];
- if (pScreen->devPrivates[MultibufferScreenIndex].ptr)
- {
- pMultibufferScreen = (MultibufferScreenPtr) pScreen->devPrivates[MultibufferScreenIndex].ptr;
- pScreen->PositionWindow = pMultibufferScreen->PositionWindow;
- xfree (pMultibufferScreen);
- }
- }
-}
-
-static int
-ProcGetBufferVersion (client)
- register ClientPtr client;
-{
- xMbufGetBufferVersionReply rep;
- register int n;
-
- REQUEST_SIZE_MATCH (xMbufGetBufferVersionReq);
- rep.type = X_Reply;
- rep.length = 0;
- rep.sequenceNumber = client->sequence;
- rep.majorVersion = MULTIBUFFER_MAJOR_VERSION;
- rep.minorVersion = MULTIBUFFER_MINOR_VERSION;
- if (client->swapped) {
- swaps(&rep.sequenceNumber, n);
- swapl(&rep.length, n);
- }
- WriteToClient(client, sizeof (xMbufGetBufferVersionReply), (char *)&rep);
- return (client->noClientException);
-}
-
-static void
-SetupBackgroundPainter (pWin, pGC)
- WindowPtr pWin;
- GCPtr pGC;
-{
- pointer gcvalues[4];
- int ts_x_origin, ts_y_origin;
- PixUnion background;
- int backgroundState;
- Mask gcmask;
-
- /*
- * First take care of any ParentRelative stuff by altering the
- * tile/stipple origin to match the coordinates of the upper-left
- * corner of the first ancestor without a ParentRelative background.
- * This coordinate is, of course, negative.
- */
-
- ts_x_origin = ts_y_origin = 0;
- while (pWin->backgroundState == ParentRelative) {
- ts_x_origin -= pWin->origin.x;
- ts_y_origin -= pWin->origin.y;
- pWin = pWin->parent;
- }
- backgroundState = pWin->backgroundState;
- background = pWin->background;
-
- switch (backgroundState)
- {
- case BackgroundPixel:
- gcvalues[0] = (pointer) background.pixel;
- gcvalues[1] = (pointer) FillSolid;
- gcmask = GCForeground|GCFillStyle;
- break;
-
- case BackgroundPixmap:
- gcvalues[0] = (pointer) FillTiled;
- gcvalues[1] = (pointer) background.pixmap;
- gcvalues[2] = (pointer) ts_x_origin;
- gcvalues[3] = (pointer) ts_y_origin;
- gcmask = GCFillStyle|GCTile|GCTileStipXOrigin|GCTileStipYOrigin;
- break;
-
- default:
- gcvalues[0] = (pointer) GXnoop;
- gcmask = GCFunction;
- }
- DoChangeGC(pGC, gcmask, (XID *)gcvalues, TRUE);
-}
-
-int
-CreateImageBuffers (pWin, nbuf, ids, action, hint)
- WindowPtr pWin;
- int nbuf;
- XID *ids;
- int action;
- int hint;
-{
- MultibuffersPtr pMultibuffers;
- MultibufferPtr pMultibuffer;
- ScreenPtr pScreen;
- int width, height, depth;
- int i;
- GCPtr pClearGC = NULL;
- xRectangle clearRect;
-
- DestroyImageBuffers(pWin);
- pMultibuffers = (MultibuffersPtr) xalloc (sizeof (MultibuffersRec) +
- nbuf * sizeof (MultibufferRec));
- if (!pMultibuffers)
- return BadAlloc;
- pMultibuffers->pWindow = pWin;
- pMultibuffers->buffers = (MultibufferPtr) (pMultibuffers + 1);
- pMultibuffers->refcnt = pMultibuffers->numMultibuffer = 0;
- if (!AddResource (pWin->drawable.id, MultibuffersResType, (pointer) pMultibuffers))
- return BadAlloc;
- width = pWin->drawable.width;
- height = pWin->drawable.height;
- depth = pWin->drawable.depth;
- pScreen = pWin->drawable.pScreen;
-
- if (pWin->backgroundState != None)
- {
- pClearGC = GetScratchGC (pWin->drawable.depth, pScreen);
- SetupBackgroundPainter (pWin, pClearGC);
- clearRect.x = clearRect.y = 0;
- clearRect.width = width;
- clearRect.height = height;
- }
-
- for (i = 0; i < nbuf; i++)
- {
- pMultibuffer = &pMultibuffers->buffers[i];
- pMultibuffer->eventMask = 0L;
- pMultibuffer->otherEventMask = 0L;
- pMultibuffer->otherClients = (OtherClientsPtr) NULL;
- pMultibuffer->number = i;
- pMultibuffer->side = MultibufferSideMono;
- pMultibuffer->clobber = MultibufferUnclobbered;
- pMultibuffer->pMultibuffers = pMultibuffers;
- if (!AddResource (ids[i], MultibufferResType, (pointer) pMultibuffer))
- break;
- pMultibuffer->pPixmap = (*pScreen->CreatePixmap) (pScreen, width, height, depth);
- if (!pMultibuffer->pPixmap)
- break;
- if (!AddResource (ids[i], MultibufferDrawableResType, (pointer) pMultibuffer->pPixmap))
- {
- FreeResource (ids[i], MultibufferResType);
- (*pScreen->DestroyPixmap) (pMultibuffer->pPixmap);
- break;
- }
- pMultibuffer->pPixmap->drawable.id = ids[i];
-
- if (i > 0 && pClearGC)
- {
- ValidateGC((DrawablePtr)pMultibuffer->pPixmap, pClearGC);
- (*pClearGC->ops->PolyFillRect)((DrawablePtr)pMultibuffer->pPixmap,
- pClearGC, 1, &clearRect);
- }
- }
- pMultibuffers->numMultibuffer = i;
- pMultibuffers->refcnt = i;
- pMultibuffers->displayedMultibuffer = -1;
- if (i > 0)
- AliasMultibuffer (pMultibuffers, 0);
- pMultibuffers->updateAction = action;
- pMultibuffers->updateHint = hint;
- pMultibuffers->windowMode = MultibufferModeMono;
- pMultibuffers->lastUpdate.months = 0;
- pMultibuffers->lastUpdate.milliseconds = 0;
- pMultibuffers->width = width;
- pMultibuffers->height = height;
- pWin->devPrivates[MultibufferWindowIndex].ptr = (pointer) pMultibuffers;
- if (pClearGC) FreeScratchGC(pClearGC);
- return Success;
-}
-
-static int
-ProcCreateImageBuffers (client)
- register ClientPtr client;
-{
- REQUEST(xMbufCreateImageBuffersReq);
- xMbufCreateImageBuffersReply rep;
- register int n;
- WindowPtr pWin;
- XID *ids;
- int len, nbuf;
- int i;
- int err;
-
- REQUEST_AT_LEAST_SIZE (xMbufCreateImageBuffersReq);
- len = stuff->length - (sizeof(xMbufCreateImageBuffersReq) >> 2);
- if (len == 0)
- return BadLength;
- if (!(pWin = LookupWindow (stuff->window, client)))
- return BadWindow;
- if (pWin->drawable.class == InputOnly)
- return BadMatch;
- switch (stuff->updateAction)
- {
- case MultibufferUpdateActionUndefined:
- case MultibufferUpdateActionBackground:
- case MultibufferUpdateActionUntouched:
- case MultibufferUpdateActionCopied:
- break;
- default:
- client->errorValue = stuff->updateAction;
- return BadValue;
- }
- switch (stuff->updateHint)
- {
- case MultibufferUpdateHintFrequent:
- case MultibufferUpdateHintIntermittent:
- case MultibufferUpdateHintStatic:
- break;
- default:
- client->errorValue = stuff->updateHint;
- return BadValue;
- }
- nbuf = len;
- ids = (XID *) &stuff[1];
- for (i = 0; i < nbuf; i++)
- {
- LEGAL_NEW_RESOURCE(ids[i], client);
- }
- err = CreateImageBuffers (pWin, nbuf, ids,
- stuff->updateAction, stuff->updateHint);
- if (err != Success)
- return err;
- rep.type = X_Reply;
- rep.length = 0;
- rep.sequenceNumber = client->sequence;
- rep.numberBuffer = ((MultibuffersPtr) (pWin->devPrivates[MultibufferWindowIndex].ptr))->numMultibuffer;
- if (client->swapped)
- {
- swaps(&rep.sequenceNumber, n);
- swapl(&rep.length, n);
- swaps(&rep.numberBuffer, n);
- }
- WriteToClient(client, sizeof (xMbufCreateImageBuffersReply), (char *)&rep);
- return (client->noClientException);
-}
-
-static int
-ProcDisplayImageBuffers (client)
- register ClientPtr client;
-{
- REQUEST(xMbufDisplayImageBuffersReq);
- MultibufferPtr *pMultibuffer;
- MultibuffersPtr *ppMultibuffers;
- int nbuf;
- XID *ids;
- int i, j;
- CARD32 minDelay;
- TimeStamp activateTime, bufferTime;
-
- REQUEST_AT_LEAST_SIZE (xMbufDisplayImageBuffersReq);
- nbuf = stuff->length - (sizeof (xMbufDisplayImageBuffersReq) >> 2);
- if (!nbuf)
- return Success;
- minDelay = stuff->minDelay;
- ids = (XID *) &stuff[1];
- ppMultibuffers = (MultibuffersPtr *) ALLOCATE_LOCAL(nbuf * sizeof (MultibuffersPtr));
- pMultibuffer = (MultibufferPtr *) ALLOCATE_LOCAL(nbuf * sizeof (MultibufferPtr));
- if (!ppMultibuffers || !pMultibuffer)
- {
- if (ppMultibuffers) DEALLOCATE_LOCAL(ppMultibuffers);
- if (pMultibuffer) DEALLOCATE_LOCAL(pMultibuffer);
- client->errorValue = 0;
- return BadAlloc;
- }
- activateTime.months = 0;
- activateTime.milliseconds = 0;
- for (i = 0; i < nbuf; i++)
- {
- pMultibuffer[i] = (MultibufferPtr) LookupIDByType (ids[i], MultibufferResType);
- if (!pMultibuffer[i])
- {
- DEALLOCATE_LOCAL(ppMultibuffers);
- DEALLOCATE_LOCAL(pMultibuffer);
- client->errorValue = ids[i];
- return MultibufferErrorBase + MultibufferBadBuffer;
- }
- ppMultibuffers[i] = pMultibuffer[i]->pMultibuffers;
- for (j = 0; j < i; j++)
- {
- if (ppMultibuffers[i] == ppMultibuffers[j])
- {
- DEALLOCATE_LOCAL(ppMultibuffers);
- DEALLOCATE_LOCAL(pMultibuffer);
- client->errorValue = ids[i];
- return BadMatch;
- }
- }
- bufferTime = ppMultibuffers[i]->lastUpdate;
- BumpTimeStamp (&bufferTime, minDelay);
- if (CompareTimeStamps (bufferTime, activateTime) == LATER)
- activateTime = bufferTime;
- }
- UpdateCurrentTime ();
- if (CompareTimeStamps (activateTime, currentTime) == LATER &&
- QueueDisplayRequest (client, activateTime))
- {
- ;
- }
- else
- PerformDisplayRequest (ppMultibuffers, pMultibuffer, nbuf);
- DEALLOCATE_LOCAL(ppMultibuffers);
- DEALLOCATE_LOCAL(pMultibuffer);
- return Success;
-}
-
-static int
-ProcDestroyImageBuffers (client)
- register ClientPtr client;
-{
- REQUEST (xMbufDestroyImageBuffersReq);
- WindowPtr pWin;
-
- REQUEST_SIZE_MATCH (xMbufDestroyImageBuffersReq);
- if (!(pWin = LookupWindow (stuff->window, client)))
- return BadWindow;
- DestroyImageBuffers (pWin);
- return Success;
-}
-
-static int
-ProcSetMBufferAttributes (client)
- register ClientPtr client;
-{
- REQUEST (xMbufSetMBufferAttributesReq);
- WindowPtr pWin;
- MultibuffersPtr pMultibuffers;
- int len;
- Mask vmask;
- Mask index2;
- CARD32 updateHint;
- XID *vlist;
-
- REQUEST_AT_LEAST_SIZE (xMbufSetMBufferAttributesReq);
- pWin = LookupWindow (stuff->window, client);
- if (!pWin)
- return BadWindow;
- pMultibuffers = (MultibuffersPtr)LookupIDByType (pWin->drawable.id, MultibuffersResType);
- if (!pMultibuffers)
- return BadMatch;
- len = stuff->length - (sizeof (xMbufSetMBufferAttributesReq) >> 2);
- vmask = stuff->valueMask;
- if (len != Ones (vmask))
- return BadLength;
- vlist = (XID *) &stuff[1];
- while (vmask)
- {
- index2 = (Mask) lowbit (vmask);
- vmask &= ~index2;
- switch (index2)
- {
- case MultibufferWindowUpdateHint:
- updateHint = (CARD32) *vlist;
- switch (updateHint)
- {
- case MultibufferUpdateHintFrequent:
- case MultibufferUpdateHintIntermittent:
- case MultibufferUpdateHintStatic:
- pMultibuffers->updateHint = updateHint;
- break;
- default:
- client->errorValue = updateHint;
- return BadValue;
- }
- vlist++;
- break;
- default:
- client->errorValue = stuff->valueMask;
- return BadValue;
- }
- }
- return Success;
-}
-
-static int
-ProcGetMBufferAttributes (client)
- ClientPtr client;
-{
- REQUEST (xMbufGetMBufferAttributesReq);
- WindowPtr pWin;
- MultibuffersPtr pMultibuffers;
- XID *ids;
- xMbufGetMBufferAttributesReply rep;
- int i, n;
-
- REQUEST_SIZE_MATCH (xMbufGetMBufferAttributesReq);
- pWin = LookupWindow (stuff->window, client);
- if (!pWin)
- return BadWindow;
- pMultibuffers = (MultibuffersPtr)LookupIDByType (pWin->drawable.id, MultibuffersResType);
- if (!pMultibuffers)
- return BadAccess;
- ids = (XID *) ALLOCATE_LOCAL (pMultibuffers->numMultibuffer * sizeof (XID));
- if (!ids)
- return BadAlloc;
- for (i = 0; i < pMultibuffers->numMultibuffer; i++)
- ids[i] = pMultibuffers->buffers[i].pPixmap->drawable.id;
- rep.type = X_Reply;
- rep.sequenceNumber = client->sequence;
- rep.length = pMultibuffers->numMultibuffer;
- rep.displayedBuffer = pMultibuffers->displayedMultibuffer;
- rep.updateAction = pMultibuffers->updateAction;
- rep.updateHint = pMultibuffers->updateHint;
- rep.windowMode = pMultibuffers->windowMode;
- if (client->swapped)
- {
- swaps(&rep.sequenceNumber, n);
- swapl(&rep.length, n);
- swaps(&rep.displayedBuffer, n);
- SwapLongs (ids, pMultibuffers->numMultibuffer);
- }
- WriteToClient (client, sizeof(xMbufGetMBufferAttributesReply),
- (char *)&rep);
- WriteToClient (client, (int)(pMultibuffers->numMultibuffer * sizeof (XID)),
- (char *)ids);
- DEALLOCATE_LOCAL((pointer) ids);
- return client->noClientException;
-}
-
-static int
-ProcSetBufferAttributes (client)
- register ClientPtr client;
-{
- REQUEST(xMbufSetBufferAttributesReq);
- MultibufferPtr pMultibuffer;
- int len;
- Mask vmask, index2;
- XID *vlist;
- Mask eventMask;
- int result;
-
- REQUEST_AT_LEAST_SIZE (xMbufSetBufferAttributesReq);
- pMultibuffer = (MultibufferPtr) LookupIDByType (stuff->buffer, MultibufferResType);
- if (!pMultibuffer)
- return MultibufferErrorBase + MultibufferBadBuffer;
- len = stuff->length - (sizeof (xMbufSetBufferAttributesReq) >> 2);
- vmask = stuff->valueMask;
- if (len != Ones (vmask))
- return BadLength;
- vlist = (XID *) &stuff[1];
- while (vmask)
- {
- index2 = (Mask) lowbit (vmask);
- vmask &= ~index2;
- switch (index2)
- {
- case MultibufferBufferEventMask:
- eventMask = (Mask) *vlist;
- vlist++;
- result = EventSelectForMultibuffer (pMultibuffer, client, eventMask);
- if (result != Success)
- return result;
- break;
- default:
- client->errorValue = stuff->valueMask;
- return BadValue;
- }
- }
- return Success;
-}
-
-int
-ProcGetBufferAttributes (client)
- register ClientPtr client;
-{
- REQUEST(xMbufGetBufferAttributesReq);
- MultibufferPtr pMultibuffer;
- xMbufGetBufferAttributesReply rep;
- OtherClientsPtr other;
- int n;
-
- REQUEST_SIZE_MATCH (xMbufGetBufferAttributesReq);
- pMultibuffer = (MultibufferPtr) LookupIDByType (stuff->buffer, MultibufferResType);
- if (!pMultibuffer)
- return MultibufferErrorBase + MultibufferBadBuffer;
- rep.type = X_Reply;
- rep.sequenceNumber = client->sequence;
- rep.length = 0;
- rep.window = pMultibuffer->pMultibuffers->pWindow->drawable.id;
- if (bClient (pMultibuffer) == client)
- rep.eventMask = pMultibuffer->eventMask;
- else
- {
- rep.eventMask = (Mask) 0L;
- for (other = pMultibuffer->otherClients; other; other = other->next)
- if (SameClient (other, client))
- {
- rep.eventMask = other->mask;
- break;
- }
- }
- rep.bufferIndex = pMultibuffer->number;
- rep.side = pMultibuffer->side;
- if (client->swapped)
- {
- swaps(&rep.sequenceNumber, n);
- swapl(&rep.length, n);
- swapl(&rep.window, n);
- swapl(&rep.eventMask, n);
- swaps(&rep.bufferIndex, n);
- }
- WriteToClient(client, sizeof (xMbufGetBufferAttributesReply), (char *)&rep);
- return (client->noClientException);
-}
-
-static int
-ProcGetBufferInfo (client)
- register ClientPtr client;
-{
- REQUEST (xMbufGetBufferInfoReq);
- DrawablePtr pDrawable;
- xMbufGetBufferInfoReply rep;
- ScreenPtr pScreen;
- int i, j, k;
- int n;
- xMbufBufferInfo *pInfo;
- int nInfo;
- DepthPtr pDepth;
-
- pDrawable = (DrawablePtr) LookupDrawable (stuff->drawable, client);
- if (!pDrawable)
- return BadDrawable;
- pScreen = pDrawable->pScreen;
- nInfo = 0;
- for (i = 0; i < pScreen->numDepths; i++)
- {
- pDepth = &pScreen->allowedDepths[i];
- nInfo += pDepth->numVids;
- }
- pInfo = (xMbufBufferInfo *)
- ALLOCATE_LOCAL (nInfo * sizeof (xMbufBufferInfo));
- if (!pInfo)
- return BadAlloc;
-
- rep.type = X_Reply;
- rep.sequenceNumber = client->sequence;
- rep.length = nInfo * (sizeof (xMbufBufferInfo) >> 2);
- rep.normalInfo = nInfo;
- rep.stereoInfo = 0;
- if (client->swapped)
- {
- swaps(&rep.sequenceNumber, n);
- swapl(&rep.length, n);
- swaps(&rep.normalInfo, n);
- swaps(&rep.stereoInfo, n);
- }
-
- k = 0;
- for (i = 0; i < pScreen->numDepths; i++)
- {
- pDepth = &pScreen->allowedDepths[i];
- for (j = 0; j < pDepth->numVids; j++)
- {
- pInfo[k].visualID = pDepth->vids[j];
- pInfo[k].maxBuffers = 0;
- pInfo[k].depth = pDepth->depth;
- if (client->swapped)
- {
- swapl (&pInfo[k].visualID, n);
- swaps (&pInfo[k].maxBuffers, n);
- }
- k++;
- }
- }
- WriteToClient (client, sizeof (xMbufGetBufferInfoReply), (pointer) &rep);
- WriteToClient (client, (int) nInfo * sizeof (xMbufBufferInfo), (pointer) pInfo);
- DEALLOCATE_LOCAL ((pointer) pInfo);
- return client->noClientException;
-}
-
-static int
-ProcClearImageBufferArea (client)
- register ClientPtr client;
-{
- REQUEST (xMbufClearImageBufferAreaReq);
- MultibufferPtr pMultibuffer;
- WindowPtr pWin;
- xRectangle clearRect;
- int width, height;
- DrawablePtr pDrawable;
- ScreenPtr pScreen;
-
- REQUEST_SIZE_MATCH (xMbufClearImageBufferAreaReq);
- pMultibuffer = (MultibufferPtr) LookupIDByType (stuff->buffer, MultibufferResType);
- if (!pMultibuffer)
- return MultibufferErrorBase + MultibufferBadBuffer;
- if ((stuff->exposures != xTrue) && (stuff->exposures != xFalse))
- {
- client->errorValue = stuff->exposures;
- return(BadValue);
- }
- pWin = pMultibuffer->pMultibuffers->pWindow;
- width = pWin->drawable.width;
- height = pWin->drawable.height;
- pScreen = pWin->drawable.pScreen;
-
- clearRect.x = stuff->x;
- clearRect.y = stuff->y;
- clearRect.width = stuff->width ? stuff->width : width;
- clearRect.height = stuff->height ? stuff->height : height;
-
- if (pWin->backgroundState != None)
- {
- GCPtr pClearGC;
- pClearGC = GetScratchGC (pWin->drawable.depth, pScreen);
- SetupBackgroundPainter (pWin, pClearGC);
-
- if (pMultibuffer->number == pMultibuffer->pMultibuffers->displayedMultibuffer)
- pDrawable = (DrawablePtr)pWin;
- else
- pDrawable = (DrawablePtr)pMultibuffer->pPixmap;
-
- ValidateGC(pDrawable, pClearGC);
- (*pClearGC->ops->PolyFillRect) (pDrawable, pClearGC, 1, &clearRect);
- FreeScratchGC(pClearGC);
- }
-
- if (stuff->exposures)
- {
- RegionRec region;
- BoxRec box;
- box.x1 = clearRect.x;
- box.y1 = clearRect.y;
- box.x2 = clearRect.x + clearRect.width;
- box.y2 = clearRect.y + clearRect.height;
- REGION_INIT(pScreen, ®ion, &box, 1);
- MultibufferExpose(pMultibuffer, ®ion);
- REGION_UNINIT(pScreen, ®ion);
- }
- return Success;
-}
-
-static int
-ProcMultibufferDispatch (client)
- register ClientPtr client;
-{
- REQUEST(xReq);
- switch (stuff->data) {
- case X_MbufGetBufferVersion:
- return ProcGetBufferVersion (client);
- case X_MbufCreateImageBuffers:
- return ProcCreateImageBuffers (client);
- case X_MbufDisplayImageBuffers:
- return ProcDisplayImageBuffers (client);
- case X_MbufDestroyImageBuffers:
- return ProcDestroyImageBuffers (client);
- case X_MbufSetMBufferAttributes:
- return ProcSetMBufferAttributes (client);
- case X_MbufGetMBufferAttributes:
- return ProcGetMBufferAttributes (client);
- case X_MbufSetBufferAttributes:
- return ProcSetBufferAttributes (client);
- case X_MbufGetBufferAttributes:
- return ProcGetBufferAttributes (client);
- case X_MbufGetBufferInfo:
- return ProcGetBufferInfo (client);
- case X_MbufClearImageBufferArea:
- return ProcClearImageBufferArea (client);
- default:
- return BadRequest;
- }
-}
-
-static int
-SProcGetBufferVersion (client)
- register ClientPtr client;
-{
- register int n;
- REQUEST (xMbufGetBufferVersionReq);
-
- swaps (&stuff->length, n);
- return ProcGetBufferVersion (client);
-}
-
-static int
-SProcCreateImageBuffers (client)
- register ClientPtr client;
-{
- register int n;
- REQUEST (xMbufCreateImageBuffersReq);
-
- swaps (&stuff->length, n);
- REQUEST_AT_LEAST_SIZE (xMbufCreateImageBuffersReq);
- swapl (&stuff->window, n);
- SwapRestL(stuff);
- return ProcCreateImageBuffers (client);
-}
-
-static int
-SProcDisplayImageBuffers (client)
- register ClientPtr client;
-{
- register int n;
- REQUEST (xMbufDisplayImageBuffersReq);
-
- swaps (&stuff->length, n);
- REQUEST_AT_LEAST_SIZE (xMbufDisplayImageBuffersReq);
- swaps (&stuff->minDelay, n);
- swaps (&stuff->maxDelay, n);
- SwapRestL(stuff);
- return ProcDisplayImageBuffers (client);
-}
-
-static int
-SProcDestroyImageBuffers (client)
- register ClientPtr client;
-{
- register int n;
- REQUEST (xMbufDestroyImageBuffersReq);
-
- swaps (&stuff->length, n);
- REQUEST_SIZE_MATCH (xMbufDestroyImageBuffersReq);
- swapl (&stuff->window, n);
- return ProcDestroyImageBuffers (client);
-}
-
-static int
-SProcSetMBufferAttributes (client)
- register ClientPtr client;
-{
- register int n;
- REQUEST (xMbufSetMBufferAttributesReq);
-
- swaps (&stuff->length, n);
- REQUEST_AT_LEAST_SIZE(xMbufSetMBufferAttributesReq);
- swapl (&stuff->window, n);
- swapl (&stuff->valueMask, n);
- SwapRestL(stuff);
- return ProcSetMBufferAttributes (client);
-}
-
-static int
-SProcGetMBufferAttributes (client)
- register ClientPtr client;
-{
- register int n;
- REQUEST (xMbufGetMBufferAttributesReq);
-
- swaps (&stuff->length, n);
- REQUEST_AT_LEAST_SIZE(xMbufGetMBufferAttributesReq);
- swapl (&stuff->window, n);
- return ProcGetMBufferAttributes (client);
-}
-
-static int
-SProcSetBufferAttributes (client)
- register ClientPtr client;
-{
- register int n;
- REQUEST (xMbufSetBufferAttributesReq);
-
- swaps (&stuff->length, n);
- REQUEST_AT_LEAST_SIZE(xMbufSetBufferAttributesReq);
- swapl (&stuff->buffer, n);
- swapl (&stuff->valueMask, n);
- SwapRestL(stuff);
- return ProcSetBufferAttributes (client);
-}
-
-static int
-SProcGetBufferAttributes (client)
- register ClientPtr client;
-{
- register int n;
- REQUEST (xMbufGetBufferAttributesReq);
-
- swaps (&stuff->length, n);
- REQUEST_AT_LEAST_SIZE(xMbufGetBufferAttributesReq);
- swapl (&stuff->buffer, n);
- return ProcGetBufferAttributes (client);
-}
-
-static int
-SProcGetBufferInfo (client)
- register ClientPtr client;
-{
- register int n;
- REQUEST (xMbufGetBufferInfoReq);
-
- swaps (&stuff->length, n);
- REQUEST_SIZE_MATCH (xMbufGetBufferInfoReq);
- swapl (&stuff->drawable, n);
- return ProcGetBufferInfo (client);
-}
-
-static int
-SProcClearImageBufferArea(client)
- register ClientPtr client;
-{
- register char n;
- REQUEST(xMbufClearImageBufferAreaReq);
-
- swaps(&stuff->length, n);
- REQUEST_SIZE_MATCH (xMbufClearImageBufferAreaReq);
- swapl(&stuff->buffer, n);
- swaps(&stuff->x, n);
- swaps(&stuff->y, n);
- swaps(&stuff->width, n);
- swaps(&stuff->height, n);
- return ProcClearImageBufferArea(client);
-}
-
-static int
-SProcMultibufferDispatch (client)
- register ClientPtr client;
-{
- REQUEST(xReq);
- switch (stuff->data) {
- case X_MbufGetBufferVersion:
- return SProcGetBufferVersion (client);
- case X_MbufCreateImageBuffers:
- return SProcCreateImageBuffers (client);
- case X_MbufDisplayImageBuffers:
- return SProcDisplayImageBuffers (client);
- case X_MbufDestroyImageBuffers:
- return SProcDestroyImageBuffers (client);
- case X_MbufSetMBufferAttributes:
- return SProcSetMBufferAttributes (client);
- case X_MbufGetMBufferAttributes:
- return SProcGetMBufferAttributes (client);
- case X_MbufSetBufferAttributes:
- return SProcSetBufferAttributes (client);
- case X_MbufGetBufferAttributes:
- return SProcGetBufferAttributes (client);
- case X_MbufGetBufferInfo:
- return SProcGetBufferInfo (client);
- case X_MbufClearImageBufferArea:
- return SProcClearImageBufferArea (client);
- default:
- return BadRequest;
- }
-}
-
-static void
-SUpdateNotifyEvent (from, to)
- xMbufUpdateNotifyEvent *from, *to;
-{
- to->type = from->type;
- cpswaps (from->sequenceNumber, to->sequenceNumber);
- cpswapl (from->buffer, to->buffer);
- cpswapl (from->timeStamp, to->timeStamp);
-}
-
-static void
-SClobberNotifyEvent (from, to)
- xMbufClobberNotifyEvent *from, *to;
-{
- to->type = from->type;
- cpswaps (from->sequenceNumber, to->sequenceNumber);
- cpswapl (from->buffer, to->buffer);
- to->state = from->state;
-}
-
-static void
-PerformDisplayRequest (ppMultibuffers, pMultibuffer, nbuf)
- MultibufferPtr *pMultibuffer;
- MultibuffersPtr *ppMultibuffers;
- int nbuf;
-{
- GCPtr pGC;
- PixmapPtr pPrevPixmap, pNewPixmap;
- xRectangle clearRect;
- WindowPtr pWin;
- RegionPtr pExposed;
- int i;
- MultibufferPtr pPrevMultibuffer;
- XID graphicsExpose;
-
- UpdateCurrentTime ();
- for (i = 0; i < nbuf; i++)
- {
- pWin = ppMultibuffers[i]->pWindow;
- pGC = GetScratchGC (pWin->drawable.depth, pWin->drawable.pScreen);
- pPrevMultibuffer =
- &ppMultibuffers[i]->buffers[ppMultibuffers[i]->displayedMultibuffer];
- pPrevPixmap = pPrevMultibuffer->pPixmap;
- pNewPixmap = pMultibuffer[i]->pPixmap;
- switch (ppMultibuffers[i]->updateAction)
- {
- case MultibufferUpdateActionUndefined:
- break;
- case MultibufferUpdateActionBackground:
- SetupBackgroundPainter (pWin, pGC);
- ValidateGC ((DrawablePtr)pPrevPixmap, pGC);
- clearRect.x = 0;
- clearRect.y = 0;
- clearRect.width = pPrevPixmap->drawable.width;
- clearRect.height = pPrevPixmap->drawable.height;
- (*pGC->ops->PolyFillRect) ((DrawablePtr)pPrevPixmap, pGC,
- 1, &clearRect);
- break;
- case MultibufferUpdateActionUntouched:
- /* copy the window to the pixmap that represents the
- * currently displayed buffer
- */
- if (pPrevMultibuffer->eventMask & ExposureMask)
- {
- graphicsExpose = TRUE;
- DoChangeGC (pGC, GCGraphicsExposures, &graphicsExpose, FALSE);
- }
- ValidateGC ((DrawablePtr)pPrevPixmap, pGC);
- pExposed = (*pGC->ops->CopyArea)
- ((DrawablePtr) pWin,
- (DrawablePtr) pPrevPixmap,
- pGC,
- 0, 0,
- pWin->drawable.width, pWin->drawable.height,
- 0, 0);
-
- /* if we couldn't copy the whole window to the buffer,
- * send expose events (if any client wants them)
- */
- if (pPrevMultibuffer->eventMask & ExposureMask)
- { /* some client wants expose events */
- if (pExposed)
- {
- RegionPtr pWinSize;
- ScreenPtr pScreen = pWin->drawable.pScreen;
-
- pWinSize = CreateUnclippedWinSize (pWin);
- /* pExposed is window-relative, but at this point
- * pWinSize is screen-relative. Make pWinSize be
- * window-relative so that region ops involving
- * pExposed and pWinSize behave sensibly.
- */
- REGION_TRANSLATE(pScreen, pWinSize,
- -pWin->drawable.x,
- -pWin->drawable.y);
- REGION_INTERSECT(pScreen, pExposed, pExposed, pWinSize);
- REGION_DESTROY(pScreen, pWinSize);
- MultibufferExpose (pPrevMultibuffer, pExposed);
- REGION_DESTROY(pScreen, pExposed);
- }
- graphicsExpose = FALSE;
- DoChangeGC (pGC, GCGraphicsExposures, &graphicsExpose, FALSE);
- }
- break; /* end case MultibufferUpdateActionUntouched */
-
- case MultibufferUpdateActionCopied:
- ValidateGC ((DrawablePtr)pPrevPixmap, pGC);
- (*pGC->ops->CopyArea) ((DrawablePtr)pNewPixmap,
- (DrawablePtr)pPrevPixmap, pGC,
- 0, 0,
- pWin->drawable.width, pWin->drawable.height,
- 0, 0);
- break;
- } /* end switch on update action */
-
- /* display the new buffer */
- ValidateGC ((DrawablePtr)pWin, pGC);
- (*pGC->ops->CopyArea) ((DrawablePtr)pNewPixmap, (DrawablePtr)pWin, pGC,
- 0, 0,
- pWin->drawable.width, pWin->drawable.height,
- 0, 0);
- ppMultibuffers[i]->lastUpdate = currentTime;
- MultibufferUpdate (pMultibuffer[i],
- ppMultibuffers[i]->lastUpdate.milliseconds);
- AliasMultibuffer (ppMultibuffers[i],
- pMultibuffer[i] - ppMultibuffers[i]->buffers);
- FreeScratchGC (pGC);
- }
-}
-
-DrawablePtr
-GetBufferPointer (pWin, i)
- WindowPtr pWin;
- int i;
-{
- MultibuffersPtr pMultibuffers;
-
- if (!(pMultibuffers = (MultibuffersPtr) pWin->devPrivates[MultibufferWindowIndex].ptr))
- return NULL;
- return (DrawablePtr) pMultibuffers->buffers[i].pPixmap;
-}
-
-int
-DisplayImageBuffers (ids, nbuf)
- XID *ids;
- int nbuf;
-{
- MultibufferPtr *pMultibuffer;
- MultibuffersPtr *pMultibuffers;
- int i, j;
-
- pMultibuffer = (MultibufferPtr *) ALLOCATE_LOCAL (nbuf * sizeof *pMultibuffer +
- nbuf * sizeof *pMultibuffers);
- if (!pMultibuffer)
- return BadAlloc;
- pMultibuffers = (MultibuffersPtr *) (pMultibuffer + nbuf);
- for (i = 0; i < nbuf; i++)
- {
- pMultibuffer[i] = (MultibufferPtr) LookupIDByType (ids[i], MultibufferResType);
- if (!pMultibuffer[i])
- {
- DEALLOCATE_LOCAL (pMultibuffer);
- return MultibufferErrorBase + MultibufferBadBuffer;
- }
- pMultibuffers[i] = pMultibuffer[i]->pMultibuffers;
- for (j = 0; j < i; j++)
- if (pMultibuffers[i] == pMultibuffers[j])
- {
- DEALLOCATE_LOCAL (pMultibuffer);
- return BadMatch;
- }
- }
- PerformDisplayRequest (pMultibuffers, pMultibuffer, nbuf);
- DEALLOCATE_LOCAL (pMultibuffer);
- return Success;
-}
-
-
-static Bool
-QueueDisplayRequest (client, activateTime)
- ClientPtr client;
- TimeStamp activateTime;
-{
- /* see xtest.c:ProcXTestFakeInput for code similar to this */
-
- if (!ClientSleepUntil(client, &activateTime, NULL, NULL))
- {
- return FALSE;
- }
- /* swap the request back so we can simply re-execute it */
- if (client->swapped)
- {
- register int n;
- REQUEST (xMbufDisplayImageBuffersReq);
-
- SwapRestL(stuff);
- swaps (&stuff->length, n);
- swaps (&stuff->minDelay, n);
- swaps (&stuff->maxDelay, n);
- }
- ResetCurrentRequest (client);
- client->sequence--;
- return TRUE;
-}
-
-
-/*
- * Deliver events to a buffer
- */
-
-static int
-DeliverEventsToMultibuffer (pMultibuffer, pEvents, count, filter)
- MultibufferPtr pMultibuffer;
- xEvent *pEvents;
- int count;
- Mask filter;
-{
- int deliveries = 0, nondeliveries = 0;
- int attempt;
- OtherClients *other;
-
- /* if nobody wants the event, we're done */
- if (!((pMultibuffer->otherEventMask|pMultibuffer->eventMask) & filter))
- return 0;
-
- /* maybe send event to owner */
- if ((attempt = TryClientEvents(
- bClient(pMultibuffer), pEvents, count, pMultibuffer->eventMask, filter, (GrabPtr) 0)) != 0)
- {
- if (attempt > 0)
- deliveries++;
- else
- nondeliveries--;
- }
-
- /* maybe send event to other clients */
- for (other = pMultibuffer->otherClients; other; other=other->next)
- {
- if ((attempt = TryClientEvents(
- rClient(other), pEvents, count, other->mask, filter, (GrabPtr) 0)) != 0)
- {
- if (attempt > 0)
- deliveries++;
- else
- nondeliveries--;
- }
- }
- if (deliveries)
- return deliveries;
- return nondeliveries;
-}
-
-/*
- * Send Expose events to interested clients
- */
-
-void
-MultibufferExpose (pMultibuffer, pRegion)
- MultibufferPtr pMultibuffer;
- RegionPtr pRegion;
-{
- if (pRegion && !REGION_NIL(pRegion))
- {
- xEvent *pEvent;
- PixmapPtr pPixmap;
- register xEvent *pe;
- register BoxPtr pBox;
- register int i;
- int numRects;
-
- pPixmap = pMultibuffer->pPixmap;
- REGION_TRANSLATE(pPixmap->drawable.pScreen, pRegion,
- -pPixmap->drawable.x, -pPixmap->drawable.y);
- /* XXX MultibufferExpose "knows" the region representation */
- numRects = REGION_NUM_RECTS(pRegion);
- pBox = REGION_RECTS(pRegion);
-
- pEvent = (xEvent *) ALLOCATE_LOCAL(numRects * sizeof(xEvent));
- if (pEvent) {
- pe = pEvent;
-
- for (i=1; i<=numRects; i++, pe++, pBox++)
- {
- pe->u.u.type = Expose;
- pe->u.expose.window = pPixmap->drawable.id;
- pe->u.expose.x = pBox->x1;
- pe->u.expose.y = pBox->y1;
- pe->u.expose.width = pBox->x2 - pBox->x1;
- pe->u.expose.height = pBox->y2 - pBox->y1;
- pe->u.expose.count = (numRects - i);
- }
- (void) DeliverEventsToMultibuffer (pMultibuffer, pEvent, numRects,
- ExposureMask);
- DEALLOCATE_LOCAL(pEvent);
- }
- }
-}
-
-/* send UpdateNotify event */
-void
-MultibufferUpdate (pMultibuffer, time2)
- MultibufferPtr pMultibuffer;
- CARD32 time2;
-{
- xMbufUpdateNotifyEvent event;
-
- event.type = MultibufferEventBase + MultibufferUpdateNotify;
- event.buffer = pMultibuffer->pPixmap->drawable.id;
- event.timeStamp = time2;
- (void) DeliverEventsToMultibuffer (pMultibuffer, (xEvent *)&event,
- 1, (Mask)MultibufferUpdateNotifyMask);
-}
-
-/*
- * The sample implementation will never generate MultibufferClobberNotify
- * events
- */
-
-void
-MultibufferClobber (pMultibuffer)
- MultibufferPtr pMultibuffer;
-{
- xMbufClobberNotifyEvent event;
-
- event.type = MultibufferEventBase + MultibufferClobberNotify;
- event.buffer = pMultibuffer->pPixmap->drawable.id;
- event.state = pMultibuffer->clobber;
- (void) DeliverEventsToMultibuffer (pMultibuffer, (xEvent *)&event,
- 1, (Mask)MultibufferClobberNotifyMask);
-}
-
-/*
- * make the resource id for buffer i refer to the window
- * drawable instead of the pixmap;
- */
-
-static void
-AliasMultibuffer (pMultibuffers, i)
- MultibuffersPtr pMultibuffers;
- int i;
-{
- MultibufferPtr pMultibuffer;
-
- if (i == pMultibuffers->displayedMultibuffer)
- return;
- /*
- * remove the old association
- */
- if (pMultibuffers->displayedMultibuffer >= 0)
- {
- pMultibuffer = &pMultibuffers->buffers[pMultibuffers->displayedMultibuffer];
- ChangeResourceValue (pMultibuffer->pPixmap->drawable.id,
- MultibufferDrawableResType,
- (pointer) pMultibuffer->pPixmap);
- }
- /*
- * make the new association
- */
- pMultibuffer = &pMultibuffers->buffers[i];
- ChangeResourceValue (pMultibuffer->pPixmap->drawable.id,
- MultibufferDrawableResType,
- (pointer) pMultibuffers->pWindow);
- pMultibuffers->displayedMultibuffer = i;
-}
-
-/*
- * free everything associated with multibuffering for this
- * window
- */
-
-void
-DestroyImageBuffers (pWin)
- WindowPtr pWin;
-{
- FreeResourceByType (pWin->drawable.id, MultibuffersResType, FALSE);
- /* Zero out the window's pointer to the buffers so they won't be reused */
- pWin->devPrivates[MultibufferWindowIndex].ptr = NULL;
-}
-
-/*
- * resize the buffers when the window is resized
- */
-
-static Bool
-MultibufferPositionWindow (pWin, x, y)
- WindowPtr pWin;
- int x, y;
-{
- ScreenPtr pScreen;
- MultibufferScreenPtr pMultibufferScreen;
- MultibuffersPtr pMultibuffers;
- MultibufferPtr pMultibuffer;
- int width, height;
- int i;
- int dx, dy, dw, dh;
- int sourcex, sourcey;
- int destx, desty;
- PixmapPtr pPixmap;
- GCPtr pGC;
- int savewidth, saveheight;
- xRectangle clearRect;
- Bool clear;
-
- pScreen = pWin->drawable.pScreen;
- pMultibufferScreen = (MultibufferScreenPtr) pScreen->devPrivates[MultibufferScreenIndex].ptr;
- (*pMultibufferScreen->PositionWindow) (pWin, x, y);
-
- /* if this window is not multibuffered, we're done */
- if (!(pMultibuffers = (MultibuffersPtr) pWin->devPrivates[MultibufferWindowIndex].ptr))
- return TRUE;
-
- /* if new size is same as old, we're done */
- if (pMultibuffers->width == pWin->drawable.width &&
- pMultibuffers->height == pWin->drawable.height)
- return TRUE;
-
- width = pWin->drawable.width;
- height = pWin->drawable.height;
- dx = pWin->drawable.x - pMultibuffers->x;
- dy = pWin->drawable.x - pMultibuffers->y;
- dw = width - pMultibuffers->width;
- dh = height - pMultibuffers->height;
- GravityTranslate (0, 0, -dx, -dy, dw, dh,
- pWin->bitGravity, &destx, &desty);
-
- /* if the window grew, remember to paint the window background,
- * and maybe send expose events, for the new areas of the buffers
- */
- clear = pMultibuffers->width < width || pMultibuffers->height < height ||
- pWin->bitGravity == ForgetGravity;
-
- sourcex = 0;
- sourcey = 0;
- savewidth = pMultibuffers->width;
- saveheight = pMultibuffers->height;
- /* clip rectangle to source and destination */
- if (destx < 0)
- {
- savewidth += destx;
- sourcex -= destx;
- destx = 0;
- }
- if (destx + savewidth > width)
- savewidth = width - destx;
- if (desty < 0)
- {
- saveheight += desty;
- sourcey -= desty;
- desty = 0;
- }
- if (desty + saveheight > height)
- saveheight = height - desty;
-
- pMultibuffers->width = width;
- pMultibuffers->height = height;
- pMultibuffers->x = pWin->drawable.x;
- pMultibuffers->y = pWin->drawable.y;
-
- pGC = GetScratchGC (pWin->drawable.depth, pScreen);
- if (clear)
- {
- SetupBackgroundPainter (pWin, pGC);
- clearRect.x = 0;
- clearRect.y = 0;
- clearRect.width = width;
- clearRect.height = height;
- }
- for (i = 0; i < pMultibuffers->numMultibuffer; i++)
- {
- pMultibuffer = &pMultibuffers->buffers[i];
- pPixmap = (*pScreen->CreatePixmap) (pScreen, width, height,
- pWin->drawable.depth);
- if (!pPixmap)
- {
- DestroyImageBuffers (pWin);
- break;
- }
- ValidateGC ((DrawablePtr)pPixmap, pGC);
- /*
- * I suppose this could avoid quite a bit of work if
- * it computed the minimal area required.
- */
- if (clear)
- (*pGC->ops->PolyFillRect) ((DrawablePtr)pPixmap, pGC, 1, &clearRect);
- if (pWin->bitGravity != ForgetGravity)
- {
- (*pGC->ops->CopyArea) ((DrawablePtr)pMultibuffer->pPixmap,
- (DrawablePtr)pPixmap, pGC,
- sourcex, sourcey, savewidth, saveheight,
- destx, desty);
- }
- pPixmap->drawable.id = pMultibuffer->pPixmap->drawable.id;
- (*pScreen->DestroyPixmap) (pMultibuffer->pPixmap);
- pMultibuffer->pPixmap = pPixmap;
- if (i != pMultibuffers->displayedMultibuffer)
- {
- ChangeResourceValue (pPixmap->drawable.id,
- MultibufferDrawableResType,
- (pointer) pPixmap);
- }
- }
- FreeScratchGC (pGC);
- return TRUE;
-}
-
-/* Resource delete func for MultibufferDrawableResType */
-/*ARGSUSED*/
-static int
-MultibufferDrawableDelete (value, id)
- pointer value;
- XID id;
-{
- DrawablePtr pDrawable = (DrawablePtr)value;
- WindowPtr pWin;
- MultibuffersPtr pMultibuffers;
- PixmapPtr pPixmap;
-
- if (pDrawable->type == DRAWABLE_WINDOW)
- {
- pWin = (WindowPtr) pDrawable;
- pMultibuffers = (MultibuffersPtr) pWin->devPrivates[MultibufferWindowIndex].ptr;
- pPixmap = pMultibuffers->buffers[pMultibuffers->displayedMultibuffer].pPixmap;
- }
- else
- {
- pPixmap = (PixmapPtr) pDrawable;
- }
- (*pPixmap->drawable.pScreen->DestroyPixmap) (pPixmap);
- return Success;
-}
-
-/* Resource delete func for MultibufferResType */
-/*ARGSUSED*/
-static int
-MultibufferDelete (value, id)
- pointer value;
- XID id;
-{
- MultibufferPtr pMultibuffer = (MultibufferPtr)value;
- MultibuffersPtr pMultibuffers;
-
- pMultibuffers = pMultibuffer->pMultibuffers;
- if (--pMultibuffers->refcnt == 0)
- {
- FreeResourceByType (pMultibuffers->pWindow->drawable.id,
- MultibuffersResType, TRUE);
- xfree (pMultibuffers);
- }
- return Success;
-}
-
-/* Resource delete func for MultibuffersResType */
-/*ARGSUSED*/
-static int
-MultibuffersDelete (value, id)
- pointer value;
- XID id;
-{
- MultibuffersPtr pMultibuffers = (MultibuffersPtr)value;
- int i;
-
- if (pMultibuffers->refcnt == pMultibuffers->numMultibuffer)
- {
- for (i = pMultibuffers->numMultibuffer; --i >= 0; )
- FreeResource (pMultibuffers->buffers[i].pPixmap->drawable.id, 0);
- }
- return Success;
-}
-
-/* Resource delete func for OtherClientResType */
-static int
-OtherClientDelete (value, id)
- pointer value;
- XID id;
-{
- MultibufferPtr pMultibuffer = (MultibufferPtr)value;
- register OtherClientsPtr other, prev;
-
- prev = 0;
- for (other = pMultibuffer->otherClients; other; other = other->next)
- {
- if (other->resource == id)
- {
- if (prev)
- prev->next = other->next;
- else
- pMultibuffer->otherClients = other->next;
- xfree (other);
- RecalculateMultibufferOtherEvents (pMultibuffer);
- break;
- }
- prev = other;
- }
- return Success;
-}
-
-static int
-EventSelectForMultibuffer (pMultibuffer, client, mask)
- MultibufferPtr pMultibuffer;
- ClientPtr client;
- Mask mask;
-{
- OtherClientsPtr other;
-
- if (mask & ~ValidEventMasks)
- {
- client->errorValue = mask;
- return BadValue;
- }
- if (bClient (pMultibuffer) == client)
- {
- pMultibuffer->eventMask = mask;
- }
- else /* some other client besides the creator wants events */
- {
- for (other = pMultibuffer->otherClients; other; other = other->next)
- {
- if (SameClient (other, client))
- {
- if (mask == 0)
- {
- FreeResource (other->resource, RT_NONE);
- break;
- }
- other->mask = mask;
- break;
- }
- }
- if (!other)
- { /* new client that never selected events on this buffer before */
- other = (OtherClients *) xalloc (sizeof (OtherClients));
- if (!other)
- return BadAlloc;
- other->mask = mask;
- other->resource = FakeClientID (client->index);
- if (!AddResource (other->resource, OtherClientResType, (pointer) pMultibuffer))
- {
- xfree (other);
- return BadAlloc;
- }
- other->next = pMultibuffer->otherClients;
- pMultibuffer->otherClients = other;
- }
- RecalculateMultibufferOtherEvents (pMultibuffer);
- }
- return (client->noClientException);
-}
-
-/* or together all the otherClients event masks */
-static void
-RecalculateMultibufferOtherEvents (pMultibuffer)
- MultibufferPtr pMultibuffer;
-{
- Mask otherEventMask;
- OtherClients *other;
-
- otherEventMask = 0L;
- for (other = pMultibuffer->otherClients; other; other = other->next)
- otherEventMask |= other->mask;
- pMultibuffer->otherEventMask = otherEventMask;
-}
-
-/* add milliseconds to a timestamp, handling overflow */
-static void
-BumpTimeStamp (ts, inc)
-TimeStamp *ts;
-CARD32 inc;
-{
- CARD32 newms;
-
- newms = ts->milliseconds + inc;
- if (newms < ts->milliseconds)
- ts->months++;
- ts->milliseconds = newms;
-}
projects / rdpsrv / blobdiff