171 lines
4.3 KiB
C
171 lines
4.3 KiB
C
/*
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* This code is largely copied from fbglyph.c.
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*
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* Copyright © 1998 Keith Packard
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* Copyright (c) 2003 Torrey T. Lyons. All Rights Reserved.
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*
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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, and that the name of Keith Packard not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. Keith Packard makes no
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* representations about the suitability of this software for any purpose. It
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* is provided "as is" without express or implied warranty.
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*
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* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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/* $XFree86: xc/programs/Xserver/fb/fbglyph.c,v 1.12 2001/09/07 15:16:00 keithp 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 "fb.h"
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#include <X11/fonts/fontstruct.h>
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#include "dixfontstr.h"
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#include "rlAccel.h"
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void
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rlImageGlyphBlt (DrawablePtr pDrawable,
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GCPtr pGC,
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int x,
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int y,
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unsigned int nglyph,
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CharInfoPtr *ppciInit,
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pointer pglyphBase)
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{
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FbGCPrivPtr pPriv = fbGetGCPrivate(pGC);
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CharInfoPtr *ppci;
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CharInfoPtr pci;
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unsigned char *pglyph; /* pointer bits in glyph */
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int gWidth, gHeight; /* width and height of glyph */
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FbStride gStride; /* stride of glyph */
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Bool opaque;
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int n;
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int gx, gy;
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#ifndef FBNOPIXADDR
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void (*glyph) (FbBits *,
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FbStride,
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int,
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FbStip *,
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FbBits,
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int,
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int);
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FbBits *dst = 0;
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FbStride dstStride = 0;
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int dstBpp = 0;
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int dstXoff = 0, dstYoff = 0;
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glyph = 0;
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if (pPriv->and == 0)
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{
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fbGetDrawable (pDrawable, dst, dstStride, dstBpp, dstXoff, dstYoff);
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switch (dstBpp) {
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case 8: glyph = fbGlyph8; break;
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case 16: glyph = fbGlyph16; break;
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#ifdef FB_24BIT
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case 24: glyph = fbGlyph24; break;
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#endif
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case 32: glyph = fbGlyph32; break;
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}
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}
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#endif
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x += pDrawable->x;
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y += pDrawable->y;
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if (TERMINALFONT (pGC->font)
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#ifndef FBNOPIXADDR
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&& !glyph
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#endif
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)
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{
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opaque = TRUE;
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}
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else
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{
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int xBack, widthBack;
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int yBack, heightBack;
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ppci = ppciInit;
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n = nglyph;
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widthBack = 0;
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while (n--)
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widthBack += (*ppci++)->metrics.characterWidth;
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xBack = x;
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if (widthBack < 0)
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{
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xBack += widthBack;
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widthBack = -widthBack;
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}
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yBack = y - FONTASCENT(pGC->font);
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heightBack = FONTASCENT(pGC->font) + FONTDESCENT(pGC->font);
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rlSolidBoxClipped (pDrawable,
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fbGetCompositeClip(pGC),
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xBack,
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yBack,
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xBack + widthBack,
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yBack + heightBack,
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fbAnd(GXcopy,pPriv->bg,pPriv->pm),
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fbXor(GXcopy,pPriv->bg,pPriv->pm));
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opaque = FALSE;
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}
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ppci = ppciInit;
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while (nglyph--)
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{
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pci = *ppci++;
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pglyph = FONTGLYPHBITS(pglyphBase, pci);
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gWidth = GLYPHWIDTHPIXELS(pci);
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gHeight = GLYPHHEIGHTPIXELS(pci);
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if (gWidth && gHeight)
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{
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gx = x + pci->metrics.leftSideBearing;
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gy = y - pci->metrics.ascent;
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#ifndef FBNOPIXADDR
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if (glyph && gWidth <= sizeof (FbStip) * 8 &&
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fbGlyphIn (fbGetCompositeClip(pGC), gx, gy, gWidth, gHeight))
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{
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(*glyph) (dst + (gy + dstYoff) * dstStride,
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dstStride,
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dstBpp,
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(FbStip *) pglyph,
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pPriv->fg,
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gx + dstXoff,
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gHeight);
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}
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else
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#endif
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{
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gStride = GLYPHWIDTHBYTESPADDED(pci) / sizeof (FbStip);
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fbPutXYImage (pDrawable,
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fbGetCompositeClip(pGC),
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pPriv->fg,
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pPriv->bg,
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pPriv->pm,
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GXcopy,
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opaque,
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gx,
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gy,
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gWidth, gHeight,
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(FbStip *) pglyph,
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gStride,
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0);
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}
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}
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x += pci->metrics.characterWidth;
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}
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}
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