void
miImageGlyphBlt(
DrawablePtr pDrawable,
GC *pGC,
int x,
int y,
unsigned int nglyph,
CharInfoPtr *ppci, /* array of character info */
pointer pglyphBase /* start of array of glyphs */
)
{
ExtentInfoRec info; /* used by QueryGlyphExtents() */
ChangeGCVal 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].val = GXcopy;
gcvals[1].val = pGC->bgPixel;
gcvals[2].val = FillSolid;
ChangeGC(NullClient, pGC, GCFunction|GCForeground|GCFillStyle, gcvals);
ValidateGC(pDrawable, pGC);
(*pGC->ops->PolyFillRect)(pDrawable, pGC, 1, &backrect);
/* put down the glyphs */
gcvals[0].val = oldFG;
ChangeGC(NullClient, pGC, GCForeground, gcvals);
ValidateGC(pDrawable, pGC);
(*pGC->ops->PolyGlyphBlt)(pDrawable, pGC, x, y, nglyph, ppci,
pglyphBase);
/* put all the toys away when done playing */
gcvals[0].val = oldAlu;
gcvals[1].val = oldFG;
gcvals[2].val = oldFS;
ChangeGC(NullClient, pGC, GCFunction|GCForeground|GCFillStyle, gcvals);
ValidateGC(pDrawable, pGC);
}
Bool
QueryTextExtents(FontPtr pFont,
unsigned long count,
unsigned char *chars,
ExtentInfoRec *info)
{
xCharInfo **charinfo;
unsigned long n;
FontEncoding encoding;
int cm;
int i;
unsigned long t;
xCharInfo *defaultChar = 0;
unsigned char defc[2];
int firstReal;
charinfo = (xCharInfo **) xalloc(count * sizeof(xCharInfo *));
if (!charinfo)
return FALSE;
encoding = TwoD16Bit;
if (pFont->info.lastRow == 0)
encoding = Linear16Bit;
(*pFont->get_metrics) (pFont, count, chars, encoding, &n, charinfo);
/* Do default character substitution as get_metrics doesn't */
#define IsNonExistentChar(ci) (!(ci) || \
((ci)->ascent == 0 && \
(ci)->descent == 0 && \
(ci)->leftSideBearing == 0 && \
(ci)->rightSideBearing == 0 && \
(ci)->characterWidth == 0))
firstReal = n;
defc[0] = pFont->info.defaultCh >> 8;
defc[1] = pFont->info.defaultCh;
(*pFont->get_metrics) (pFont, 1, defc, encoding, &t, &defaultChar);
if ((IsNonExistentChar (defaultChar)))
defaultChar = 0;
for (i = 0; i < n; i++)
{
if ((IsNonExistentChar (charinfo[i])))
{
if (!defaultChar)
continue;
charinfo[i] = defaultChar;
}
if (firstReal == n)
firstReal = i;
}
cm = pFont->info.constantMetrics;
pFont->info.constantMetrics = FALSE;
QueryGlyphExtents(pFont, (CharInfoPtr*) charinfo + firstReal,
n - firstReal, info);
pFont->info.constantMetrics = cm;
xfree(charinfo);
return TRUE;
}
void
xf4bppImageGlyphBlt(DrawablePtr pDrawable, GC *pGC, int x, int y,
unsigned int nglyph, CharInfoPtr *ppci, pointer pglyphBase)
{
ExtentInfoRec info; /* used by QueryGlyphExtents() */
xRectangle backrect;/* backing rectangle to paint.
in the general case, NOT necessarily
the same as the string's bounding box
*/
/* GJA -- I agree, this ALL should be moved to GC validation. */
if ( (pDrawable->type != DRAWABLE_WINDOW) || (pGC->alu != GXcopy) ||
!xf86Screens[pDrawable->pScreen->myNum]->vtSema ||
((pGC->font) &&
(FONTMAXBOUNDS(pGC->font,rightSideBearing) -
FONTMINBOUNDS(pGC->font,leftSideBearing) > 32 ||
FONTMINBOUNDS(pGC->font,characterWidth) < 0)) ) {
miImageGlyphBlt(pDrawable, pGC, x, y, nglyph, ppci, pglyphBase);
} else {
ppcPrivGC *pPrivGC;
int oldfillStyle, oldfg, oldalu;
if (!(pGC->planemask & 0x0F))
return;
QueryGlyphExtents(pGC->font, ppci, (unsigned long)nglyph, &info);
backrect.x = x;
backrect.y = y - FONTASCENT(pGC->font);
backrect.width = info.overallWidth;
backrect.height = FONTASCENT(pGC->font) + FONTDESCENT(pGC->font);
pPrivGC = pGC->devPrivates[mfbGCPrivateIndex].ptr;
oldfillStyle = pPrivGC->colorRrop.fillStyle; /* GJA */
oldfg = pPrivGC->colorRrop.fgPixel; /* GJA */
oldalu = pPrivGC->colorRrop.alu; /* GJA */
pPrivGC->colorRrop.fillStyle = FillSolid; /* GJA */
pPrivGC->colorRrop.fgPixel = pGC->bgPixel; /* GJA */
pGC->fgPixel = pGC->bgPixel;
pPrivGC->colorRrop.alu = GXcopy; /* GJA */
pGC->alu = GXcopy;
/* Required fields:
* colorRrop.alu, colorRrop.planemask, colorRrop.fgPixel
*/
xf4bppPolyFillRect(pDrawable, pGC, 1, &backrect);
pPrivGC->colorRrop.fgPixel = oldfg; /* GJA */
pGC->fgPixel = oldfg;
/* the faint-hearted can open their eyes now */
DO_WM3(pGC,doImageGlyphBlt(pDrawable, pGC, x, y, nglyph, ppci,
pglyphBase,&info))
pPrivGC->colorRrop.fillStyle = oldfillStyle; /* GJA */
pPrivGC->colorRrop.alu = oldalu; /* GJA */
pGC->alu = oldalu;
}
}
