/* Copyright 1993, 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 "scrnintstr.h" #include "gcstruct.h" #include "pixmapstr.h" #include "windowstr.h" #include "migc.h" /* ARGSUSED */ void miChangeGC(GCPtr pGC, unsigned long mask) { return; } void miDestroyGC(GCPtr pGC) { if (pGC->pRotatedPixmap) (*pGC->pScreen->DestroyPixmap) (pGC->pRotatedPixmap); if (pGC->freeCompClip) RegionDestroy(pGC->pCompositeClip); } void miDestroyClip(GCPtr pGC) { if (pGC->clientClipType == CT_NONE) return; else if (pGC->clientClipType == CT_PIXMAP) { (*pGC->pScreen->DestroyPixmap) ((PixmapPtr) (pGC->clientClip)); } else { /* * we know we'll never have a list of rectangles, since ChangeClip * immediately turns them into a region */ RegionDestroy(pGC->clientClip); } pGC->clientClip = NULL; pGC->clientClipType = CT_NONE; } void miChangeClip( GCPtr pGC, int type, pointer pvalue, int nrects) { (*pGC->funcs->DestroyClip) (pGC); if (type == CT_PIXMAP) { /* convert the pixmap to a region */ pGC->clientClip = (pointer) BitmapToRegion(pGC->pScreen, (PixmapPtr) pvalue); (*pGC->pScreen->DestroyPixmap) (pvalue); } else if (type == CT_REGION) { /* stuff the region in the GC */ pGC->clientClip = pvalue; } else if (type != CT_NONE) { pGC->clientClip = (pointer) RegionFromRects(nrects, (xRectangle *) pvalue, type); free(pvalue); } pGC->clientClipType = (type != CT_NONE && pGC->clientClip) ? CT_REGION : CT_NONE; pGC->stateChanges |= GCClipMask; } void miCopyClip(GCPtr pgcDst, GCPtr pgcSrc) { RegionPtr prgnNew; switch (pgcSrc->clientClipType) { case CT_PIXMAP: ((PixmapPtr) pgcSrc->clientClip)->refcnt++; /* Fall through !! */ case CT_NONE: (*pgcDst->funcs->ChangeClip) (pgcDst, (int) pgcSrc->clientClipType, pgcSrc->clientClip, 0); break; case CT_REGION: prgnNew = RegionCreate(NULL, 1); RegionCopy(prgnNew, (RegionPtr) (pgcSrc->clientClip)); (*pgcDst->funcs->ChangeClip) (pgcDst, CT_REGION, (pointer) prgnNew, 0); break; } } /* ARGSUSED */ void miCopyGC(GCPtr pGCSrc, unsigned long changes, GCPtr pGCDst) { return; } void miComputeCompositeClip( GCPtr pGC, DrawablePtr pDrawable) { if (pDrawable->type == DRAWABLE_WINDOW) { WindowPtr pWin = (WindowPtr) pDrawable; RegionPtr pregWin; Bool freeTmpClip, freeCompClip; if (pGC->subWindowMode == IncludeInferiors) { pregWin = NotClippedByChildren(pWin); freeTmpClip = TRUE; } else { pregWin = &pWin->clipList; freeTmpClip = FALSE; } freeCompClip = pGC->freeCompClip; /* * if there is no client clip, we can get by with just keeping the * pointer we got, and remembering whether or not should destroy (or * maybe re-use) it later. this way, we avoid unnecessary copying of * regions. (this wins especially if many clients clip by children * and have no client clip.) */ if (pGC->clientClipType == CT_NONE) { if (freeCompClip) RegionDestroy(pGC->pCompositeClip); pGC->pCompositeClip = pregWin; pGC->freeCompClip = freeTmpClip; } else { /* * we need one 'real' region to put into the composite clip. if * pregWin the current composite clip are real, we can get rid of * one. if pregWin is real and the current composite clip isn't, * use pregWin for the composite clip. if the current composite * clip is real and pregWin isn't, use the current composite * clip. if neither is real, create a new region. */ RegionTranslate(pGC->clientClip, pDrawable->x + pGC->clipOrg.x, pDrawable->y + pGC->clipOrg.y); if (freeCompClip) { RegionIntersect(pGC->pCompositeClip, pregWin, pGC->clientClip); if (freeTmpClip) RegionDestroy(pregWin); } else if (freeTmpClip) { RegionIntersect(pregWin, pregWin, pGC->clientClip); pGC->pCompositeClip = pregWin; } else { pGC->pCompositeClip = RegionCreate(NullBox, 0); RegionIntersect(pGC->pCompositeClip, pregWin, pGC->clientClip); } pGC->freeCompClip = TRUE; RegionTranslate(pGC->clientClip, -(pDrawable->x + pGC->clipOrg.x), -(pDrawable->y + pGC->clipOrg.y)); } } /* end of composite clip for a window */ else { BoxRec pixbounds; /* XXX should we translate by drawable.x/y here ? */ /* If you want pixmaps in offscreen memory, yes */ pixbounds.x1 = pDrawable->x; pixbounds.y1 = pDrawable->y; pixbounds.x2 = pDrawable->x + pDrawable->width; pixbounds.y2 = pDrawable->y + pDrawable->height; if (pGC->freeCompClip) { RegionReset(pGC->pCompositeClip, &pixbounds); } else { pGC->freeCompClip = TRUE; pGC->pCompositeClip = RegionCreate(&pixbounds, 1); } if (pGC->clientClipType == CT_REGION) { if(pDrawable->x || pDrawable->y) { RegionTranslate(pGC->clientClip, pDrawable->x + pGC->clipOrg.x, pDrawable->y + pGC->clipOrg.y); RegionIntersect(pGC->pCompositeClip, pGC->pCompositeClip, pGC->clientClip); RegionTranslate(pGC->clientClip, -(pDrawable->x + pGC->clipOrg.x), -(pDrawable->y + pGC->clipOrg.y)); } else { RegionTranslate(pGC->pCompositeClip, -pGC->clipOrg.x, -pGC->clipOrg.y); RegionIntersect(pGC->pCompositeClip, pGC->pCompositeClip, pGC->clientClip); RegionTranslate(pGC->pCompositeClip, pGC->clipOrg.x, pGC->clipOrg.y); } } } /* end of composite clip for pixmap */ } /* end miComputeCompositeClip */