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-/***********************************************************
-
-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.
-
-******************************************************************/
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <string.h>
-
-#include <X11/X.h>
-#include <X11/Xmd.h>
-#include <X11/Xproto.h>
-#include "afb.h"
-#include "dixfontstr.h"
-#include <X11/fonts/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 void afbDestroyGC(GCPtr);
-static void afbValidateGC(GCPtr, unsigned long, DrawablePtr);
-
-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
-};
-
-static void
-afbReduceOpaqueStipple(PixelType fg, PixelType bg, unsigned long planemask,
- int depth, 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;
- }
- }
-}
-
-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 *)dixLookupPrivate(&pGC->devPrivates,
- afbGCPrivateKey);
- 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;
-}
-
-static void
-afbComputeCompositeClip(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 */
-
-/* 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*/
-static 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)dixLookupPrivate(&pGC->devPrivates,
- afbGCPrivateKey);
-
- /*
- 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 */
-}
-
-static 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);
-}
-
-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;
- }
- }
-}
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