192 lines
6.5 KiB
C
192 lines
6.5 KiB
C
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/*
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(c) Copyright 1996 Hewlett-Packard Company
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(c) Copyright 1996 International Business Machines Corp.
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(c) Copyright 1996 Sun Microsystems, Inc.
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(c) Copyright 1996 Novell, Inc.
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(c) Copyright 1996 Digital Equipment Corp.
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(c) Copyright 1996 Fujitsu Limited
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(c) Copyright 1996 Hitachi, Ltd.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the names of the copyright holders shall
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not be used in advertising or otherwise to promote the sale, use or other
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dealings in this Software without prior written authorization from said
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copyright holders.
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <X11/X.h>
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#include "scrnintstr.h"
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#include "validate.h"
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#include "windowstr.h"
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#include "mi.h"
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#include "regionstr.h"
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#include "mivalidate.h"
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/*
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* XpValidateTree - a validateTree routine which ignores overlapping
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* top-level windows when computing the clip lists for such windows.
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* This can be used by any driver which maintains a separate memory
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* store for each top-level window (with its respective children).
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* If the pParent is not the root window, then miValidateTree
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* is used unmodified.
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*
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* The strategy if pParent is the root is to save off the
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* current values of pParent->firstChild and pParent->lastChild,
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* replacing both with the single child of interest. We save off
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* pChild->prevSib and pChild->nextSib, and replace them with NullWindow.
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* We save off pParent->clipList, and replace it with
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* pParent->winSize - pChild->winSize. We then call miValidateTree
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* to do the needed ComputeClips on the pChild's heirarchy.
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* pParent's clipList is then recomputed based on the sizes
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* of its children, and the saved pointers are restored.
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* The trees associated with the siblings of pChild must be descended
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* and cleaned of any marks (i.e. the valdata pointer freed, and set to NULL),
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* and pParent' AfterValidate structure's exposed field must be updated.
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*/
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/*ARGSUSED*/
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int
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XpValidateTree (pParent, pChild, kind)
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WindowPtr pParent; /* Parent to validate */
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WindowPtr pChild; /* First child of pParent that was
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* affected */
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VTKind kind; /* What kind of configuration caused call */
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{
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RegionRec origPrntClip; /* orig clipList for parent */
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RegionRec childClip; /* The new borderClip for the current
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* child */
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RegionRec tmpPrntClip; /* parent clipList - child borderClip */
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RegionRec exposed; /* For intermediate calculations */
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register ScreenPtr pScreen;
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register WindowPtr pWin;
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Bool overlap;
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int viewvals;
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Bool forward;
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WindowPtr origFirstChild, origLastChild, origPrevSib, origNextSib;
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/*
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* If we're validating something other than a top-level window,
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* then just invoke miValidateTree.
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*/
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if(pParent->parent != NullWindow)
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return miValidateTree(pParent, pChild, kind);
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/*
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* If it's a stack change of top levels then it's a no-op for
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* this scheme, so we just clean up any marks on windows and return.
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*/
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if(kind == VTStack)
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{
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CleanMarks(pParent);
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return 1;
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}
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pScreen = pParent->drawable.pScreen;
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if (pChild == NullWindow)
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pChild = pParent->firstChild;
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/* Save off the existing window heirarchy */
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origFirstChild = pParent->firstChild;
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origLastChild = pParent->lastChild;
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origPrevSib = pChild->prevSib;
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origNextSib = pChild->nextSib;
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pParent->firstChild = pChild;
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pParent->lastChild = pChild;
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pChild->prevSib = NullWindow;
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pChild->nextSib = NullWindow;
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/*
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* Set pParent's clipList to be its winSize minus the pChild's
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* borderSize.
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*/
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origPrntClip = pParent->clipList;
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REGION_NULL(pScreen, &tmpPrntClip);
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REGION_SUBRACT(pScreen, &tmpPrntClip, &pParent->winSize,
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&pChild->borderSize);
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pParent->clipList = tmpPrntClip;
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/*
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* Call miValidateTree on the pruned tree.
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*/
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(void) miValidateTree(pParent, pChild, kind);
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/* Restore the saved heirarchy */
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pChild->prevSib = origPrevSib;
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pChild->nextSib = origNextSib;
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pParent->firstChild = origFirstChild;
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pParent->lastChild = origLastChild;
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/*
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* Compute pParent's clipList by taking its winSize and subracting
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* the borderSize of each of its children.
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*/
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for(pWin = pParent->firstChild,
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REGION_COPY(pScreen, &pParent->clipList, &pParent->winSize);
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pWin != NullWindow;
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pWin = pWin->nextSib)
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{
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REGION_SUBTRACT(pScreen, &pParent->clipList, &pParent->clipList,
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&pWin->borderSize);
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}
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/*
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* Compute pParent's AfterValidate structure by subracting the original
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* clipList from the newly computed clipList.
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*/
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REGION_NULL(pScreen, &pParent->valdata->after.exposed);
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REGION_SUBTRACT(pScreen, &pParent->valdata->after.exposed,
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&pParent->clipList, &origPrntClip);
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/*
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* Remove the marks from all but pParent and pChild's heirarchy.
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* i.e. from all of pChild's siblings and their children.
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*/
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for(pWin = pParent->firstChild; pWin != NullWindow; pWin = pWin->nextSib)
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{
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WindowPtr pCurChild = pWin;
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if(pCurChild == pChild)
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continue;
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while (1)
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{
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if(pCurChild->valdata)
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{
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xfree(pCurChild->valdata);
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pCurChild->valdata = (ValidatePtr)NULL;
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}
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if (pCurChild->firstChild)
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{
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pCurChild = pCurChild->firstChild;
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continue;
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}
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while (!pCurChild->nextSib && (pCurChild != pWin))
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pCurChild = pCurChild->parent;
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if (pCurChild == pWin)
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break;
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pCurChild = pCurChild->nextSib;
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}
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}
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}
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