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/* $XConsortium: ipltegblt.c,v 5.9 94/04/17 20:29:03 dpw Exp $ */
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/***********************************************************
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Copyright (c) 1987 X Consortium
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of the X Consortium shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from the X Consortium.
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Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appear in all copies and that
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both that copyright notice and this permission notice appear in
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supporting documentation, and that the name of Digital not be
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used in advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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******************************************************************/
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/* Modified nov 94 by Martin Schaller (Martin_Schaller@maus.r.de) for use with
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#include <X11/Xproto.h>
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#include <X11/fonts/fontstruct.h>
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#include "dixfontstr.h"
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#include "windowstr.h"
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#include "scrnintstr.h"
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#include "pixmapstr.h"
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#include "regionstr.h"
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#define MFB_CONSTS_ONLY
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#include "iplmskbits.h"
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this works for fonts with glyphs <= 32 bits wide, on an
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arbitrarily deep display. Use iplTEGlyphBlt8 for 8 bit displays.
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This should be called only with a terminal-emulator font;
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this means that the FIXED_METRICS flag is set, and that
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glyphbounds == charbounds.
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in theory, this goes faster; even if it doesn't, it reduces the
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flicker caused by writing a string over itself with image text (since
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the background gets repainted per character instead of per string.)
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this seems to be important for some converted X10 applications.
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Image text looks at the bits in the glyph and the fg and bg in the
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GC. it paints a rectangle, as defined in the protocol dcoument,
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and the paints the characters.
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iplTEGlyphBlt(pDrawable, pGC, x, y, nglyph, ppci, pglyphBase)
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DrawablePtr pDrawable;
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CharInfoPtr *ppci; /* array of character info */
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pointer pglyphBase; /* start of array of glyphs */
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FontPtr pfont = pGC->font;
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INTER_DECLAREG(*pdstBase); /* pointer to group with top row
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int w; /* width of glyph and char */
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int h; /* height of glyph and char */
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register int xpos=x; /* current x%32 */
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int ypos=y; /* current y%32 */
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register unsigned char *pglyph;
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INTER_DECLAREG(*pdst); /* pointer to current group in dst */
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int hTmp; /* counter for height */
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BoxRec bbox; /* for clipping */
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register int wtmp,xtemp,width;
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INTER_DECLAREGP(bgfill);
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INTER_DECLAREGP(fgfill);
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unsigned long *ptemp;
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INTER_DECLAREGP(tmpDst1);
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INTER_DECLAREGP(tmpDst2);
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INTER_DECLAREG(*pdtmp);
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xpos += pDrawable->x;
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ypos += pDrawable->y;
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iplGetGroupWidthAndPointer (pDrawable, widthDst, pdstBase)
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wtmp = FONTMAXBOUNDS(pfont,characterWidth);
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h = FONTASCENT(pfont) + FONTDESCENT(pfont);
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widthGlyph = GLYPHWIDTHBYTESPADDED(*ppci);
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xpos += FONTMAXBOUNDS(pfont,leftSideBearing);
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ypos -= FONTASCENT(pfont);
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bbox.x2 = xpos + (wtmp * nglyph);
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INTER_PFILL(pGC->fgPixel, fgfill);
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INTER_PFILL(pGC->bgPixel, bgfill);
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switch (RECT_IN_REGION(pGC->pScreen, iplGetCompositeClip(pGC), &bbox))
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/* this is the WRONG thing to do, but it works.
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calling the non-terminal text is easy, but slow, given
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what we know about the font.
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the right thing to do is something like:
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for each clip rectangle
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compute at which row the glyph starts to be in it,
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and at which row the glyph ceases to be in it
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compute which is the first glyph inside the left
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edge, and the last one inside the right edge
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draw a fractional first glyph, using only
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the rows we know are in
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draw all the whole glyphs, using the appropriate rows
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draw any pieces of the last glyph, using the right rows
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this way, the code would take advantage of knowing that
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all glyphs are the same height and don't overlap.
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miImageGlyphBlt(pDrawable, pGC, x, y, nglyph, ppci, pglyphBase);
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pdtmp = pdstBase + (widthDst * ypos);
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pglyph = FONTGLYPHBITS(pglyphBase, *ppci++);
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tmpx = x & INTER_PIM;
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w = min(width, INTER_PPG - tmpx);
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/* w = min(w, (PGSZ - xtemp)); */
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ptemp = (unsigned long *)(pglyph + (xtemp >> MFB_PWSH));
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INTER_getstipplepixelsb(ptemp,xtemp,w,bgfill,fgfill,tmpDst1);
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INTER_DECLAREG(*pdsttmp) =
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pdst + (x >> INTER_PGSH) * INTER_PLANES;
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INTER_putbits(tmpDst1,tmpx,w,pdsttmp,pGC->planemask);
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pglyph += widthGlyph;
added
removed
iplan2p4/ipltegblt.c
