302 lines
8.0 KiB
C
302 lines
8.0 KiB
C
/* $Xorg: migc.c,v 1.4 2001/02/09 02:05:21 xorgcvs Exp $ */
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/*
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Copyright 1993, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
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OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall
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not be used in advertising or otherwise to promote the sale, use or
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other dealings in this Software without prior written authorization
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from The Open Group.
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*/
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/* $XFree86: xc/programs/Xserver/mi/migc.c,v 1.8 2001/08/06 20:51:18 dawes Exp $ */
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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 "scrnintstr.h"
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#include "gcstruct.h"
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#include "pixmapstr.h"
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#include "windowstr.h"
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#include "migc.h"
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/* ARGSUSED */
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_X_EXPORT void
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miChangeGC(pGC, mask)
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GCPtr pGC;
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unsigned long mask;
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{
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return;
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}
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_X_EXPORT void
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miDestroyGC(pGC)
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GCPtr pGC;
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{
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if (pGC->pRotatedPixmap)
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(*pGC->pScreen->DestroyPixmap) (pGC->pRotatedPixmap);
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if (pGC->freeCompClip)
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REGION_DESTROY(pGC->pScreen, pGC->pCompositeClip);
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miDestroyGCOps(pGC->ops);
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}
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/*
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* create a private op array for a gc
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*/
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_X_EXPORT GCOpsPtr
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miCreateGCOps(prototype)
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GCOpsPtr prototype;
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{
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GCOpsPtr ret;
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/* XXX */ Must_have_memory = TRUE;
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ret = (GCOpsPtr) xalloc(sizeof(GCOps));
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/* XXX */ Must_have_memory = FALSE;
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if (!ret)
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return 0;
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*ret = *prototype;
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ret->devPrivate.val = 1;
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return ret;
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}
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_X_EXPORT void
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miDestroyGCOps(ops)
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GCOpsPtr ops;
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{
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if (ops->devPrivate.val)
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xfree(ops);
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}
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_X_EXPORT void
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miDestroyClip(pGC)
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GCPtr pGC;
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{
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if (pGC->clientClipType == CT_NONE)
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return;
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else if (pGC->clientClipType == CT_PIXMAP)
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{
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(*pGC->pScreen->DestroyPixmap) ((PixmapPtr) (pGC->clientClip));
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}
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else
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{
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/*
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* we know we'll never have a list of rectangles, since ChangeClip
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* immediately turns them into a region
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*/
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REGION_DESTROY(pGC->pScreen, pGC->clientClip);
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}
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pGC->clientClip = NULL;
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pGC->clientClipType = CT_NONE;
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}
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_X_EXPORT void
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miChangeClip(pGC, type, pvalue, nrects)
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GCPtr pGC;
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int type;
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pointer pvalue;
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int nrects;
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{
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(*pGC->funcs->DestroyClip) (pGC);
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if (type == CT_PIXMAP)
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{
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/* convert the pixmap to a region */
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pGC->clientClip = (pointer) BITMAP_TO_REGION(pGC->pScreen,
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(PixmapPtr) pvalue);
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(*pGC->pScreen->DestroyPixmap) (pvalue);
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}
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else if (type == CT_REGION)
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{
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/* stuff the region in the GC */
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pGC->clientClip = pvalue;
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}
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else if (type != CT_NONE)
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{
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pGC->clientClip = (pointer) RECTS_TO_REGION(pGC->pScreen, nrects,
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(xRectangle *) pvalue,
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type);
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xfree(pvalue);
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}
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pGC->clientClipType = (type != CT_NONE && pGC->clientClip) ? CT_REGION : CT_NONE;
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pGC->stateChanges |= GCClipMask;
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}
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_X_EXPORT void
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miCopyClip(pgcDst, pgcSrc)
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GCPtr pgcDst, pgcSrc;
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{
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RegionPtr prgnNew;
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switch (pgcSrc->clientClipType)
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{
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case CT_PIXMAP:
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((PixmapPtr) pgcSrc->clientClip)->refcnt++;
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/* Fall through !! */
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case CT_NONE:
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(*pgcDst->funcs->ChangeClip) (pgcDst, (int) pgcSrc->clientClipType,
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pgcSrc->clientClip, 0);
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break;
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case CT_REGION:
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prgnNew = REGION_CREATE(pgcSrc->pScreen, NULL, 1);
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REGION_COPY(pgcDst->pScreen, prgnNew,
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(RegionPtr) (pgcSrc->clientClip));
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(*pgcDst->funcs->ChangeClip) (pgcDst, CT_REGION, (pointer) prgnNew, 0);
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break;
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}
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}
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/* ARGSUSED */
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_X_EXPORT void
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miCopyGC(pGCSrc, changes, pGCDst)
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GCPtr pGCSrc;
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unsigned long changes;
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GCPtr pGCDst;
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{
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return;
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}
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_X_EXPORT void
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miComputeCompositeClip(pGC, pDrawable)
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GCPtr pGC;
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DrawablePtr pDrawable;
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{
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ScreenPtr pScreen;
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/* This prevents warnings about pScreen not being used. */
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pGC->pScreen = pScreen = pGC->pScreen;
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if (pDrawable->type == DRAWABLE_WINDOW)
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{
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WindowPtr pWin = (WindowPtr) pDrawable;
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RegionPtr pregWin;
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Bool freeTmpClip, freeCompClip;
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if (pGC->subWindowMode == IncludeInferiors)
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{
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pregWin = NotClippedByChildren(pWin);
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freeTmpClip = TRUE;
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}
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else
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{
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pregWin = &pWin->clipList;
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freeTmpClip = FALSE;
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}
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freeCompClip = pGC->freeCompClip;
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/*
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* if there is no client clip, we can get by with just keeping the
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* pointer we got, and remembering whether or not should destroy (or
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* maybe re-use) it later. this way, we avoid unnecessary copying of
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* regions. (this wins especially if many clients clip by children
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* and have no client clip.)
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*/
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if (pGC->clientClipType == CT_NONE)
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{
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if (freeCompClip)
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REGION_DESTROY(pScreen, pGC->pCompositeClip);
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pGC->pCompositeClip = pregWin;
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pGC->freeCompClip = freeTmpClip;
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}
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else
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{
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/*
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* we need one 'real' region to put into the composite clip. if
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* pregWin the current composite clip are real, we can get rid of
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* one. if pregWin is real and the current composite clip isn't,
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* use pregWin for the composite clip. if the current composite
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* clip is real and pregWin isn't, use the current composite
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* clip. if neither is real, create a new region.
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*/
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REGION_TRANSLATE(pScreen, pGC->clientClip,
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pDrawable->x + pGC->clipOrg.x,
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pDrawable->y + pGC->clipOrg.y);
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if (freeCompClip)
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{
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REGION_INTERSECT(pGC->pScreen, pGC->pCompositeClip,
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pregWin, pGC->clientClip);
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if (freeTmpClip)
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REGION_DESTROY(pScreen, pregWin);
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}
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else if (freeTmpClip)
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{
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REGION_INTERSECT(pScreen, pregWin, pregWin, pGC->clientClip);
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pGC->pCompositeClip = pregWin;
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}
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else
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{
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pGC->pCompositeClip = REGION_CREATE(pScreen, NullBox, 0);
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REGION_INTERSECT(pScreen, pGC->pCompositeClip,
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pregWin, pGC->clientClip);
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}
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pGC->freeCompClip = TRUE;
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REGION_TRANSLATE(pScreen, pGC->clientClip,
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-(pDrawable->x + pGC->clipOrg.x),
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-(pDrawable->y + pGC->clipOrg.y));
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}
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} /* end of composite clip for a window */
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else
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{
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BoxRec pixbounds;
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/* XXX should we translate by drawable.x/y here ? */
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/* If you want pixmaps in offscreen memory, yes */
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pixbounds.x1 = pDrawable->x;
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pixbounds.y1 = pDrawable->y;
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pixbounds.x2 = pDrawable->x + pDrawable->width;
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pixbounds.y2 = pDrawable->y + pDrawable->height;
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if (pGC->freeCompClip)
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{
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REGION_RESET(pScreen, pGC->pCompositeClip, &pixbounds);
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}
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else
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{
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pGC->freeCompClip = TRUE;
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pGC->pCompositeClip = REGION_CREATE(pScreen, &pixbounds, 1);
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}
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if (pGC->clientClipType == CT_REGION)
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{
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if(pDrawable->x || pDrawable->y) {
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REGION_TRANSLATE(pScreen, pGC->clientClip,
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pDrawable->x + pGC->clipOrg.x,
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pDrawable->y + pGC->clipOrg.y);
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REGION_INTERSECT(pScreen, pGC->pCompositeClip,
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pGC->pCompositeClip, pGC->clientClip);
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REGION_TRANSLATE(pScreen, pGC->clientClip,
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-(pDrawable->x + pGC->clipOrg.x),
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-(pDrawable->y + pGC->clipOrg.y));
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} else {
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REGION_TRANSLATE(pScreen, pGC->pCompositeClip,
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-pGC->clipOrg.x, -pGC->clipOrg.y);
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REGION_INTERSECT(pScreen, pGC->pCompositeClip,
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pGC->pCompositeClip, pGC->clientClip);
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REGION_TRANSLATE(pScreen, pGC->pCompositeClip,
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pGC->clipOrg.x, pGC->clipOrg.y);
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}
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}
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} /* end of composite clip for pixmap */
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} /* end miComputeCompositeClip */
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