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+/***********************************************************
+
+Copyright 1987, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+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
+OPEN GROUP 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 Open Group 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 Open Group.
+
+
+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.
+
+******************************************************************/
+
+/* $Xorg: miglblt.c,v 1.4 2001/02/09 02:05:21 xorgcvs Exp $ */
+
+#include "X.h"
+#include "Xmd.h"
+#include "Xproto.h"
+#include "misc.h"
+#include "fontstruct.h"
+#include "dixfontstr.h"
+#include "gcstruct.h"
+#include "windowstr.h"
+#include "scrnintstr.h"
+#include "pixmap.h"
+#include "servermd.h"
+
+/*
+ machine-independent glyph blt.
+ assumes that glyph bits in snf are written in bytes,
+have same bit order as the server's bitmap format,
+and are byte padded. this corresponds to the snf distributed
+with the sample server.
+
+ get a scratch GC.
+ in the scratch GC set alu = GXcopy, fg = 1, bg = 0
+ allocate a bitmap big enough to hold the largest glyph in the font
+ validate the scratch gc with the bitmap
+ for each glyph
+ carefully put the bits of the glyph in a buffer,
+ padded to the server pixmap scanline padding rules
+ fake a call to PutImage from the buffer into the bitmap
+ use the bitmap in a call to PushPixels
+*/
+
+void
+miPolyGlyphBlt(pDrawable, pGC, x, y, nglyph, ppci, pglyphBase)
+ DrawablePtr pDrawable;
+ GC *pGC;
+ int x, y;
+ unsigned int nglyph;
+ CharInfoPtr *ppci; /* array of character info */
+ unsigned char *pglyphBase; /* start of array of glyphs */
+{
+ int width, height;
+ PixmapPtr pPixmap;
+ int nbyLine; /* bytes per line of padded pixmap */
+ FontPtr pfont;
+ GCPtr pGCtmp;
+ register int i;
+ register int j;
+ unsigned char *pbits; /* buffer for PutImage */
+ register unsigned char *pb; /* temp pointer into buffer */
+ register CharInfoPtr pci; /* currect char info */
+ register unsigned char *pglyph; /* pointer bits in glyph */
+ int gWidth, gHeight; /* width and height of glyph */
+ register int nbyGlyphWidth; /* bytes per scanline of glyph */
+ int nbyPadGlyph; /* server padded line of glyph */
+
+ XID gcvals[3];
+
+ if (pGC->miTranslate)
+ {
+ x += pDrawable->x;
+ y += pDrawable->y;
+ }
+
+ pfont = pGC->font;
+ width = FONTMAXBOUNDS(pfont,rightSideBearing) -
+ FONTMINBOUNDS(pfont,leftSideBearing);
+ height = FONTMAXBOUNDS(pfont,ascent) +
+ FONTMAXBOUNDS(pfont,descent);
+
+ pPixmap = (*pDrawable->pScreen->CreatePixmap)(pDrawable->pScreen,
+ width, height, 1);
+ if (!pPixmap)
+ return;
+
+ pGCtmp = GetScratchGC(1, pDrawable->pScreen);
+ if (!pGCtmp)
+ {
+ (*pDrawable->pScreen->DestroyPixmap)(pPixmap);
+ return;
+ }
+
+ gcvals[0] = GXcopy;
+ gcvals[1] = 1;
+ gcvals[2] = 0;
+
+ DoChangeGC(pGCtmp, GCFunction|GCForeground|GCBackground, gcvals, 0);
+
+ nbyLine = BitmapBytePad(width);
+ pbits = (unsigned char *)ALLOCATE_LOCAL(height*nbyLine);
+ if (!pbits)
+ {
+ (*pDrawable->pScreen->DestroyPixmap)(pPixmap);
+ FreeScratchGC(pGCtmp);
+ return;
+ }
+ while(nglyph--)
+ {
+ pci = *ppci++;
+ pglyph = FONTGLYPHBITS(pglyphBase, pci);
+ gWidth = GLYPHWIDTHPIXELS(pci);
+ gHeight = GLYPHHEIGHTPIXELS(pci);
+ if (gWidth && gHeight)
+ {
+ nbyGlyphWidth = GLYPHWIDTHBYTESPADDED(pci);
+ nbyPadGlyph = BitmapBytePad(gWidth);
+
+ if (nbyGlyphWidth == nbyPadGlyph
+#if GLYPHPADBYTES != 4
+ && (((int) pglyph) & 3) == 0
+#endif
+ )
+ {
+ pb = pglyph;
+ }
+ else
+ {
+ for (i=0, pb = pbits; i<gHeight; i++, pb = pbits+(i*nbyPadGlyph))
+ for (j = 0; j < nbyGlyphWidth; j++)
+ *pb++ = *pglyph++;
+ pb = pbits;
+ }
+
+ if ((pGCtmp->serialNumber) != (pPixmap->drawable.serialNumber))
+ ValidateGC((DrawablePtr)pPixmap, pGCtmp);
+ (*pGCtmp->ops->PutImage)((DrawablePtr)pPixmap, pGCtmp,
+ pPixmap->drawable.depth,
+ 0, 0, gWidth, gHeight,
+ 0, XYBitmap, (char *)pb);
+
+ if ((pGC->serialNumber) != (pDrawable->serialNumber))
+ ValidateGC(pDrawable, pGC);
+ (*pGC->ops->PushPixels)(pGC, pPixmap, pDrawable,
+ gWidth, gHeight,
+ x + pci->metrics.leftSideBearing,
+ y - pci->metrics.ascent);
+ }
+ x += pci->metrics.characterWidth;
+ }
+ (*pDrawable->pScreen->DestroyPixmap)(pPixmap);
+ DEALLOCATE_LOCAL(pbits);
+ FreeScratchGC(pGCtmp);
+}
+
+
+void
+miImageGlyphBlt(pDrawable, pGC, x, y, nglyph, ppci, pglyphBase)
+ DrawablePtr pDrawable;
+ GC *pGC;
+ int x, y;
+ unsigned int nglyph;
+ CharInfoPtr *ppci; /* array of character info */
+ unsigned char *pglyphBase; /* start of array of glyphs */
+{
+ ExtentInfoRec info; /* used by QueryGlyphExtents() */
+ XID gcvals[3];
+ int oldAlu, oldFS;
+ unsigned long oldFG;
+ xRectangle backrect;
+
+ QueryGlyphExtents(pGC->font, ppci, (unsigned long)nglyph, &info);
+
+ if (info.overallWidth >= 0)
+ {
+ backrect.x = x;
+ backrect.width = info.overallWidth;
+ }
+ else
+ {
+ backrect.x = x + info.overallWidth;
+ backrect.width = -info.overallWidth;
+ }
+ backrect.y = y - FONTASCENT(pGC->font);
+ backrect.height = FONTASCENT(pGC->font) + FONTDESCENT(pGC->font);
+
+ oldAlu = pGC->alu;
+ oldFG = pGC->fgPixel;
+ oldFS = pGC->fillStyle;
+
+ /* fill in the background */
+ gcvals[0] = GXcopy;
+ gcvals[1] = pGC->bgPixel;
+ gcvals[2] = FillSolid;
+ DoChangeGC(pGC, GCFunction|GCForeground|GCFillStyle, gcvals, 0);
+ ValidateGC(pDrawable, pGC);
+ (*pGC->ops->PolyFillRect)(pDrawable, pGC, 1, &backrect);
+
+ /* put down the glyphs */
+ gcvals[0] = oldFG;
+ DoChangeGC(pGC, GCForeground, gcvals, 0);
+ ValidateGC(pDrawable, pGC);
+ (*pGC->ops->PolyGlyphBlt)(pDrawable, pGC, x, y, nglyph, ppci,
+ (char *)pglyphBase);
+
+ /* put all the toys away when done playing */
+ gcvals[0] = oldAlu;
+ gcvals[1] = oldFG;
+ gcvals[2] = oldFS;
+ DoChangeGC(pGC, GCFunction|GCForeground|GCFillStyle, gcvals, 0);
+
+}
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