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Added error correction when using symbol offsets.

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This commit is contained in:
Damyan Ognyanoff 2000-09-22 20:57:36 +00:00 committed by Alexandre Julliard
parent 29001b3131
commit ab965d9541
1 changed files with 12 additions and 5 deletions
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17
graphics/x11drv/text.c
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@ -251,29 +251,36 @@ X11DRV_ExtTextOut( DC *dc, INT x, INT y, UINT flags,
delta = i = 0;
if( lpDx ) /* explicit character widths */
{
int extra = dc->wndExtX / 2;
const long ve_we = dc->vportExtX*0x10000 / dc->wndExtX;
unsigned short err = 0;
while (i < count)
{
/* initialize text item with accumulated delta */
long sum;
long fSum;
sum = 0;
pitem->chars = str2b + i;
pitem->delta = delta;
pitem->nchars = 0;
pitem->font = None;
delta = 0;
/* add characters to the same XTextItem until new delta
* becomes non-zero */
/* add characters to the same XTextItem
* until new delta becomes non-zero */
do
{
delta += (lpDx[i] * dc->vportExtX + extra) / dc->wndExtX
sum += lpDx[i];
fSum = sum*ve_we+err;
delta = SHIWORD(fSum)
- X11DRV_cptable[pfo->fi->cptable].pTextWidth(
pfo, str2b + i, 1);
pfo, pitem->chars, pitem->nchars+1);
pitem->nchars++;
} while ((++i < count) && !delta);
pitem++;
err = LOWORD(fSum);
}
}
else /* charExtra or breakExtra */