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Diffstat (limited to 'afb/afbgc.c')
-rw-r--r-- | afb/afbgc.c | 707 |
1 files changed, 707 insertions, 0 deletions
diff --git a/afb/afbgc.c b/afb/afbgc.c new file mode 100644 index 000000000..fe88475a3 --- /dev/null +++ b/afb/afbgc.c @@ -0,0 +1,707 @@ +/* $XFree86: xc/programs/Xserver/afb/afbgc.c,v 3.3 2001/10/28 03:32:58 tsi Exp $ */ +/*********************************************************** + +Copyright (c) 1987 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. + + +Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts. + + All Rights Reserved + +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, +provided that the above copyright notice appear in all copies and that +both that copyright notice and this permission notice appear in +supporting documentation, and that the name of Digital not be +used in advertising or publicity pertaining to distribution of the +software without specific, written prior permission. + +DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING +ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL +DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR +ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, +WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, +ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS +SOFTWARE. + +******************************************************************/ +/* $XConsortium: afbgc.c,v 5.35 94/04/17 20:28:23 dpw Exp $ */ + +#include "X.h" +#include "Xmd.h" +#include "Xproto.h" +#include "afb.h" +#include "dixfontstr.h" +#include "fontstruct.h" +#include "gcstruct.h" +#include "windowstr.h" +#include "pixmapstr.h" +#include "scrnintstr.h" +#include "region.h" + +#include "mistruct.h" +#include "migc.h" + +#include "maskbits.h" + +static GCFuncs afbFuncs = { + afbValidateGC, + miChangeGC, + miCopyGC, + afbDestroyGC, + miChangeClip, + miDestroyClip, + miCopyClip +}; + +static GCOps afbGCOps = { + afbSolidFS, + afbSetSpans, + afbPutImage, + afbCopyArea, + miCopyPlane, + afbPolyPoint, + afbLineSS, + afbSegmentSS, + miPolyRectangle, + afbZeroPolyArcSS, + afbFillPolygonSolid, + afbPolyFillRect, + afbPolyFillArcSolid, + miPolyText8, + miPolyText16, + miImageText8, + miImageText16, + afbTEGlyphBlt, + afbPolyGlyphBlt, + afbPushPixels +#ifdef NEED_LINEHELPER + ,NULL +#endif +}; + + +Bool +afbCreateGC(pGC) + register GCPtr pGC; +{ + afbPrivGC *pPriv; + + pGC->clientClip = NULL; + pGC->clientClipType = CT_NONE; + + /* some of the output primitives aren't really necessary, since + they will be filled in ValidateGC because of dix/CreateGC() + setting all the change bits. Others are necessary because although + they depend on being a monochrome frame buffer, they don't change + */ + + pGC->ops = &afbGCOps; + pGC->funcs = &afbFuncs; + + /* afb wants to translate before scan convesion */ + pGC->miTranslate = 1; + + pPriv = (afbPrivGC *)(pGC->devPrivates[afbGCPrivateIndex].ptr); + afbReduceRop(pGC->alu, pGC->fgPixel, pGC->planemask, pGC->depth, + pPriv->rrops); + afbReduceOpaqueStipple(pGC->fgPixel, pGC->bgPixel, pGC->planemask, + pGC->depth, pPriv->rropOS); + + pGC->fExpose = TRUE; + pGC->pRotatedPixmap = NullPixmap; + pGC->freeCompClip = FALSE; + return TRUE; +} + +/* Clipping conventions + if the drawable is a window + CT_REGION ==> pCompositeClip really is the composite + CT_other ==> pCompositeClip is the window clip region + if the drawable is a pixmap + CT_REGION ==> pCompositeClip is the translated client region + clipped to the pixmap boundary + CT_other ==> pCompositeClip is the pixmap bounding box +*/ + +/*ARGSUSED*/ +void +afbValidateGC(pGC, changes, pDrawable) + register GCPtr pGC; + unsigned long changes; + DrawablePtr pDrawable; +{ + register afbPrivGCPtr devPriv; + int mask; /* stateChanges */ + int index; /* used for stepping through bitfields */ + int xrot, yrot; /* rotations for tile and stipple pattern */ + /* flags for changing the proc vector + and updating things in devPriv + */ + int new_rotate, new_rrop, new_line, new_text, new_fill; + DDXPointRec oldOrg; /* origin of thing GC was last used with */ + + oldOrg = pGC->lastWinOrg; + + pGC->lastWinOrg.x = pDrawable->x; + pGC->lastWinOrg.y = pDrawable->y; + + /* we need to re-rotate the tile if the previous window/pixmap + origin (oldOrg) differs from the new window/pixmap origin + (pGC->lastWinOrg) + */ + new_rotate = (oldOrg.x != pGC->lastWinOrg.x) || + (oldOrg.y != pGC->lastWinOrg.y); + + + devPriv = ((afbPrivGCPtr)(pGC->devPrivates[afbGCPrivateIndex].ptr)); + + + /* + if the client clip is different or moved OR + the subwindowMode has changed OR + the window's clip has changed since the last validation + we need to recompute the composite clip + */ + if ((changes & (GCClipXOrigin|GCClipYOrigin|GCClipMask|GCSubwindowMode)) || + (pDrawable->serialNumber != (pGC->serialNumber & DRAWABLE_SERIAL_BITS))) + afbComputeCompositeClip(pGC, pDrawable); + + new_rrop = FALSE; + new_line = FALSE; + new_text = FALSE; + new_fill = FALSE; + + mask = changes; + while (mask) { + index = lowbit(mask); + mask &= ~index; + + /* this switch acculmulates a list of which procedures + might have to change due to changes in the GC. in + some cases (e.g. changing one 16 bit tile for another) + we might not really need a change, but the code is + being paranoid. + this sort of batching wins if, for example, the alu + and the font have been changed, or any other pair + of items that both change the same thing. + */ + switch (index) { + case GCPlaneMask: + case GCFunction: + case GCForeground: + new_rrop = TRUE; + break; + case GCBackground: + new_rrop = TRUE; /* for opaque stipples */ + break; + case GCLineStyle: + case GCLineWidth: + case GCJoinStyle: + new_line = TRUE; + break; + case GCCapStyle: + break; + case GCFillStyle: + new_fill = TRUE; + break; + case GCFillRule: + break; + case GCTile: + if(pGC->tileIsPixel) + break; + new_rotate = TRUE; + new_fill = TRUE; + break; + + case GCStipple: + if(pGC->stipple == (PixmapPtr)NULL) + break; + new_rotate = TRUE; + new_fill = TRUE; + break; + + case GCTileStipXOrigin: + new_rotate = TRUE; + break; + + case GCTileStipYOrigin: + new_rotate = TRUE; + break; + + case GCFont: + new_text = TRUE; + break; + case GCSubwindowMode: + break; + case GCGraphicsExposures: + break; + case GCClipXOrigin: + break; + case GCClipYOrigin: + break; + case GCClipMask: + break; + case GCDashOffset: + break; + case GCDashList: + break; + case GCArcMode: + break; + default: + break; + } + } + + /* deal with the changes we've collected . + new_rrop must be done first because subsequent things + depend on it. + */ + + if(new_rotate || new_fill) { + Bool new_pix = FALSE; + + /* figure out how much to rotate */ + xrot = pGC->patOrg.x; + yrot = pGC->patOrg.y; + xrot += pDrawable->x; + yrot += pDrawable->y; + + switch (pGC->fillStyle) { + case FillTiled: + /* copy current tile and stipple */ + if (!pGC->tileIsPixel && + (pGC->tile.pixmap->drawable.width <= PPW) && + !(pGC->tile.pixmap->drawable.width & + (pGC->tile.pixmap->drawable.width - 1))) { + afbCopyRotatePixmap(pGC->tile.pixmap, &pGC->pRotatedPixmap, + xrot, yrot); + new_pix = TRUE; + } + break; + case FillStippled: + case FillOpaqueStippled: + if (pGC->stipple && (pGC->stipple->drawable.width <= PPW) && + !(pGC->stipple->drawable.width & + (pGC->stipple->drawable.width - 1))) { + afbCopyRotatePixmap(pGC->stipple, &pGC->pRotatedPixmap, + xrot, yrot); + new_pix = TRUE; + } + } + /* destroy any previously rotated tile or stipple */ + if (!new_pix && pGC->pRotatedPixmap) { + (*pDrawable->pScreen->DestroyPixmap)(pGC->pRotatedPixmap); + pGC->pRotatedPixmap = (PixmapPtr)NULL; + } + } + + /* + * duck out here when the GC is unchanged + */ + + if (!changes) + return; + + if (new_rrop || new_fill) { + afbReduceRop(pGC->alu, pGC->fgPixel, pGC->planemask, pDrawable->depth, + devPriv->rrops); + afbReduceOpaqueStipple(pGC->fgPixel, pGC->bgPixel, pGC->planemask, + pGC->depth, devPriv->rropOS); + new_fill = TRUE; + } + + if (new_line || new_fill || new_text) { + if (!pGC->ops->devPrivate.val) { + pGC->ops = miCreateGCOps(pGC->ops); + pGC->ops->devPrivate.val = 1; + } + } + + if (new_line || new_fill) { + if (pGC->lineWidth == 0) { + if (pGC->lineStyle == LineSolid && pGC->fillStyle == FillSolid) + pGC->ops->PolyArc = afbZeroPolyArcSS; + else + pGC->ops->PolyArc = miZeroPolyArc; + } else + pGC->ops->PolyArc = miPolyArc; + if (pGC->lineStyle == LineSolid) { + if(pGC->lineWidth == 0) { + if (pGC->fillStyle == FillSolid) { + pGC->ops->PolySegment = afbSegmentSS; + pGC->ops->Polylines = afbLineSS; + } + else + { + pGC->ops->PolySegment = miPolySegment; + pGC->ops->Polylines = miZeroLine; + } + } else { + pGC->ops->PolySegment = miPolySegment; + pGC->ops->Polylines = miWideLine; + } + } else { + if(pGC->lineWidth == 0 && pGC->fillStyle == FillSolid) { + pGC->ops->PolySegment = afbSegmentSD; + pGC->ops->Polylines = afbLineSD; + } else { + pGC->ops->PolySegment = miPolySegment; + pGC->ops->Polylines = miWideDash; + } + } + } + + if (new_text || new_fill) { + if ((pGC->font) && + (FONTMAXBOUNDS(pGC->font,rightSideBearing) - + FONTMINBOUNDS(pGC->font,leftSideBearing) > 32 || + FONTMINBOUNDS(pGC->font,characterWidth) < 0)) { + pGC->ops->PolyGlyphBlt = miPolyGlyphBlt; + pGC->ops->ImageGlyphBlt = miImageGlyphBlt; + } else { + /* special case ImageGlyphBlt for terminal emulator fonts */ + if ((pGC->font) && + TERMINALFONT(pGC->font)) { + pGC->ops->ImageGlyphBlt = afbTEGlyphBlt; + } else { + pGC->ops->ImageGlyphBlt = afbImageGlyphBlt; + } + + /* now do PolyGlyphBlt */ + if (pGC->fillStyle == FillSolid) { + pGC->ops->PolyGlyphBlt = afbPolyGlyphBlt; + } else { + pGC->ops->PolyGlyphBlt = miPolyGlyphBlt; + } + } + } + + if (new_fill) { + /* install a suitable fillspans and pushpixels */ + pGC->ops->PushPixels = afbPushPixels; + pGC->ops->FillPolygon = miFillPolygon; + pGC->ops->PolyFillArc = miPolyFillArc; + + switch (pGC->fillStyle) { + case FillSolid: + pGC->ops->FillSpans = afbSolidFS; + pGC->ops->FillPolygon = afbFillPolygonSolid; + pGC->ops->PolyFillArc = afbPolyFillArcSolid; + break; + case FillTiled: + if (pGC->pRotatedPixmap) + pGC->ops->FillSpans = afbTileFS; + else + pGC->ops->FillSpans = afbUnnaturalTileFS; + break; + case FillOpaqueStippled: + if (pGC->pRotatedPixmap) + pGC->ops->FillSpans = afbOpaqueStippleFS; + else + pGC->ops->FillSpans = afbUnnaturalOpaqueStippleFS; + break; + + case FillStippled: + if (pGC->pRotatedPixmap) + pGC->ops->FillSpans = afbStippleFS; + else + pGC->ops->FillSpans = afbUnnaturalStippleFS; + break; + } + } /* end of new_fill */ +} + +void +afbDestroyGC(pGC) + GCPtr pGC; +{ + if (pGC->pRotatedPixmap) + (*pGC->pScreen->DestroyPixmap)(pGC->pRotatedPixmap); + if (pGC->freeCompClip) + REGION_DESTROY(pGC->pScreen, pGC->pCompositeClip); + miDestroyGCOps(pGC->ops); +} + +/* table to map alu(src, dst) to alu(~src, dst) */ +int afbInverseAlu[16] = { + GXclear, + GXandInverted, + GXnor, + GXcopyInverted, + GXand, + GXnoop, + GXequiv, + GXorInverted, + GXandReverse, + GXxor, + GXinvert, + GXnand, + GXcopy, + GXor, + GXorReverse, + GXset +}; + +void +afbReduceOpaqueStipple(fg, bg, planemask, depth, rop) +register PixelType fg; +register PixelType bg; +register unsigned long planemask; +int depth; +register unsigned char *rop; +{ + register int d; + register Pixel mask = 1; + + bg ^= fg; + + for (d = 0; d < depth; d++, mask <<= 1) { + if (!(planemask & mask)) + rop[d] = RROP_NOP; + else if (!(bg & mask)) { + /* Both fg and bg have a 0 or 1 in this plane */ + if (fg & mask) + rop[d] = RROP_WHITE; + else + rop[d] = RROP_BLACK; + } else { + /* Both fg and bg have different bits on this plane */ + if (fg & mask) + rop[d] = RROP_COPY; + else + rop[d] = RROP_INVERT; + } + } +} + +void +afbReduceRop(alu, src, planemask, depth, rop) + register int alu; + register Pixel src; + register unsigned long planemask; + int depth; + register unsigned char *rop; +{ + register int d; + register Pixel mask = 1; + + for (d = 0; d < depth; d++, mask <<= 1) { + if (!(planemask & mask)) + rop[d] = RROP_NOP; + else if ((src & mask) == 0) /* src is black */ + switch (alu) { + case GXclear: + rop[d] = RROP_BLACK; + break; + case GXand: + rop[d] = RROP_BLACK; + break; + case GXandReverse: + rop[d] = RROP_BLACK; + break; + case GXcopy: + rop[d] = RROP_BLACK; + break; + case GXandInverted: + rop[d] = RROP_NOP; + break; + case GXnoop: + rop[d] = RROP_NOP; + break; + case GXxor: + rop[d] = RROP_NOP; + break; + case GXor: + rop[d] = RROP_NOP; + break; + case GXnor: + rop[d] = RROP_INVERT; + break; + case GXequiv: + rop[d] = RROP_INVERT; + break; + case GXinvert: + rop[d] = RROP_INVERT; + break; + case GXorReverse: + rop[d] = RROP_INVERT; + break; + case GXcopyInverted: + rop[d] = RROP_WHITE; + break; + case GXorInverted: + rop[d] = RROP_WHITE; + break; + case GXnand: + rop[d] = RROP_WHITE; + break; + case GXset: + rop[d] = RROP_WHITE; + break; + } + else /* src is white */ + switch (alu) { + case GXclear: + rop[d] = RROP_BLACK; + break; + case GXand: + rop[d] = RROP_NOP; + break; + case GXandReverse: + rop[d] = RROP_INVERT; + break; + case GXcopy: + rop[d] = RROP_WHITE; + break; + case GXandInverted: + rop[d] = RROP_BLACK; + break; + case GXnoop: + rop[d] = RROP_NOP; + break; + case GXxor: + rop[d] = RROP_INVERT; + break; + case GXor: + rop[d] = RROP_WHITE; + break; + case GXnor: + rop[d] = RROP_BLACK; + break; + case GXequiv: + rop[d] = RROP_NOP; + break; + case GXinvert: + rop[d] = RROP_INVERT; + break; + case GXorReverse: + rop[d] = RROP_WHITE; + break; + case GXcopyInverted: + rop[d] = RROP_BLACK; + break; + case GXorInverted: + rop[d] = RROP_NOP; + break; + case GXnand: + rop[d] = RROP_INVERT; + break; + case GXset: + rop[d] = RROP_WHITE; + break; + } + } +} + +void +afbComputeCompositeClip(pGC, pDrawable) + 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) + REGION_DESTROY(pGC->pScreen, 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. + */ + + REGION_TRANSLATE(pGC->pScreen, pGC->clientClip, + pDrawable->x + pGC->clipOrg.x, + pDrawable->y + pGC->clipOrg.y); + + if (freeCompClip) { + REGION_INTERSECT(pGC->pScreen, pGC->pCompositeClip, pregWin, + pGC->clientClip); + if (freeTmpClip) + REGION_DESTROY(pGC->pScreen, pregWin); + } else if (freeTmpClip) { + REGION_INTERSECT(pGC->pScreen, pregWin, pregWin, pGC->clientClip); + pGC->pCompositeClip = pregWin; + } else { + pGC->pCompositeClip = REGION_CREATE(pGC->pScreen, NullBox, 0); + REGION_INTERSECT(pGC->pScreen, pGC->pCompositeClip, + pregWin, pGC->clientClip); + } + pGC->freeCompClip = TRUE; + REGION_TRANSLATE(pGC->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 (pGC->freeCompClip) { + REGION_RESET(pGC->pScreen, pGC->pCompositeClip, &pixbounds); + } else { + pGC->freeCompClip = TRUE; + pGC->pCompositeClip = REGION_CREATE(pGC->pScreen, &pixbounds, 1); + } + + if (pGC->clientClipType == CT_REGION) { + REGION_TRANSLATE(pGC->pScreen, pGC->pCompositeClip, -pGC->clipOrg.x, + -pGC->clipOrg.y); + REGION_INTERSECT(pGC->pScreen, pGC->pCompositeClip, + pGC->pCompositeClip, pGC->clientClip); + REGION_TRANSLATE(pGC->pScreen, pGC->pCompositeClip, pGC->clipOrg.x, + pGC->clipOrg.y); + } + } /* end of composite clip for pixmap */ +} /* end afbComputeCompositeClip */ |