/* $XConsortium: migc.c,v 1.4 94/04/17 20:27:36 dpw Exp $ */ /* Copyright (c) 1993 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. */ #include "scrnintstr.h" #include "gcstruct.h" #include "pixmapstr.h" #include "windowstr.h" #include "migc.h" /* This structure has to line up with the mfb and cfb gc private structures so * that when it is superimposed on them, the three fields that migc.c needs to * see will be accessed correctly. I know this is not beautiful, but it seemed * better than all the code duplication in cfb and mfb. */ typedef struct { unsigned char pad1; unsigned char pad2; unsigned char pad3; unsigned pad4:1; unsigned freeCompClip:1; PixmapPtr pRotatedPixmap; RegionPtr pCompositeClip; } miPrivGC; static int miGCPrivateIndex; void miRegisterGCPrivateIndex(gcindex) int gcindex; { miGCPrivateIndex = gcindex; } /* ARGSUSED */ void miChangeGC(pGC, mask) GCPtr pGC; unsigned long mask; { return; } void miDestroyGC(pGC) GCPtr pGC; { miPrivGC *pPriv; pPriv = (miPrivGC *) (pGC->devPrivates[miGCPrivateIndex].ptr); if (pPriv->pRotatedPixmap) (*pGC->pScreen->DestroyPixmap) (pPriv->pRotatedPixmap); if (pPriv->freeCompClip) REGION_DESTROY(pGC->pScreen, pPriv->pCompositeClip); miDestroyGCOps(pGC->ops); } /* * create a private op array for a gc */ GCOpsPtr miCreateGCOps(prototype) GCOpsPtr prototype; { GCOpsPtr ret; extern Bool Must_have_memory; /* XXX */ Must_have_memory = TRUE; ret = (GCOpsPtr) xalloc(sizeof(GCOps)); /* XXX */ Must_have_memory = FALSE; if (!ret) return 0; *ret = *prototype; ret->devPrivate.val = 1; return ret; } void miDestroyGCOps(ops) GCOpsPtr ops; { if (ops->devPrivate.val) xfree(ops); } void miDestroyClip(pGC) 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 */ REGION_DESTROY(pGC->pScreen, pGC->clientClip); } pGC->clientClip = NULL; pGC->clientClipType = CT_NONE; } void miChangeClip(pGC, type, pvalue, nrects) 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) BITMAP_TO_REGION(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) RECTS_TO_REGION(pGC->pScreen, nrects, (xRectangle *) pvalue, type); xfree(pvalue); } pGC->clientClipType = (type != CT_NONE && pGC->clientClip) ? CT_REGION : CT_NONE; pGC->stateChanges |= GCClipMask; } void miCopyClip(pgcDst, pgcSrc) GCPtr pgcDst, 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 = REGION_CREATE(pgcSrc->pScreen, NULL, 1); REGION_COPY(pgcDst->pScreen, prgnNew, (RegionPtr) (pgcSrc->clientClip)); (*pgcDst->funcs->ChangeClip) (pgcDst, CT_REGION, (pointer) prgnNew, 0); break; } } /* ARGSUSED */ void miCopyGC(pGCSrc, changes, pGCDst) GCPtr pGCSrc; unsigned long changes; GCPtr pGCDst; { return; } void miComputeCompositeClip(pGC, pDrawable) GCPtr pGC; DrawablePtr pDrawable; { ScreenPtr pScreen = pGC->pScreen; miPrivGC *devPriv = (miPrivGC *) (pGC->devPrivates[miGCPrivateIndex].ptr); 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 = devPriv->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) REGION_DESTROY(pScreen, devPriv->pCompositeClip); devPriv->pCompositeClip = pregWin; devPriv->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. */ REGION_TRANSLATE(pScreen, pGC->clientClip, pDrawable->x + pGC->clipOrg.x, pDrawable->y + pGC->clipOrg.y); if (freeCompClip) { REGION_INTERSECT(pGC->pScreen, devPriv->pCompositeClip, pregWin, pGC->clientClip); if (freeTmpClip) REGION_DESTROY(pScreen, pregWin); } else if (freeTmpClip) { REGION_INTERSECT(pScreen, pregWin, pregWin, pGC->clientClip); devPriv->pCompositeClip = pregWin; } else { devPriv->pCompositeClip = REGION_CREATE(pScreen, NullBox, 0); REGION_INTERSECT(pScreen, devPriv->pCompositeClip, pregWin, pGC->clientClip); } devPriv->freeCompClip = TRUE; REGION_TRANSLATE(pScreen, 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 ? */ pixbounds.x1 = 0; pixbounds.y1 = 0; pixbounds.x2 = pDrawable->width; pixbounds.y2 = pDrawable->height; if (devPriv->freeCompClip) { REGION_RESET(pScreen, devPriv->pCompositeClip, &pixbounds); } else { devPriv->freeCompClip = TRUE; devPriv->pCompositeClip = REGION_CREATE(pScreen, &pixbounds, 1); } if (pGC->clientClipType == CT_REGION) { REGION_TRANSLATE(pScreen, devPriv->pCompositeClip, -pGC->clipOrg.x, -pGC->clipOrg.y); REGION_INTERSECT(pScreen, devPriv->pCompositeClip, devPriv->pCompositeClip, pGC->clientClip); REGION_TRANSLATE(pScreen, devPriv->pCompositeClip, pGC->clipOrg.x, pGC->clipOrg.y); } } /* end of composite clip for pixmap */ } /* end miComputeCompositeClip */