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Commit d80b7a07 authored by Ian Pilcher's avatar Ian Pilcher Committed by Alexandre Julliard
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Use Windows metrics for font scaling.

parent 1c61b3ba
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Showing with 117 additions and 50 deletions
dlls/wineps/font.c
View file @ d80b7a07
......@@ -13,6 +13,118 @@
DEFAULT_DEBUG_CHANNEL(psdrv);
/*******************************************************************************
* ScaleFont
*
* Scale font to requested lfHeight
*
*/
inline static float round(float f)
{
return (f > 0) ? (f + 0.5) : (f - 0.5);
}
static void ScaleFont(DC *dc, LOGFONTW *lf, PSDRV_PDEVICE *physDev)
{
PSFONT *font = &(physDev->font);
WINMETRICS *wm = &(font->afm->WinMetrics);
TEXTMETRICW *tm = &(font->tm);
LONG lfHeight_ds;
USHORT usUnitsPerEm, usWinAscent, usWinDescent;
SHORT sAscender, sDescender, sLineGap, sTypoAscender;
SHORT sTypoDescender, sTypoLineGap, sAvgCharWidth;
TRACE("'%s' %li\n", font->afm->FontName, lf->lfHeight);
lfHeight_ds = INTERNAL_YWSTODS(dc, lf->lfHeight); /* world->viewport */
if (lfHeight_ds < 0) /* match em height */
{
font->scale = - ((float)lfHeight_ds / (float)(wm->usUnitsPerEm));
}
else /* match cell height */
{
font->scale = (float)lfHeight_ds /
(float)(wm->usWinAscent + wm->usWinDescent);
}
physDev->font.size = (INT)round(font->scale * (float)wm->usUnitsPerEm);
physDev->font.escapement = lf->lfEscapement;
physDev->font.set = FALSE;
usUnitsPerEm = (USHORT)round((float)(wm->usUnitsPerEm) * font->scale);
sAscender = (SHORT)round((float)(wm->sAscender) * font->scale);
sDescender = (SHORT)round((float)(wm->sDescender) * font->scale);
sLineGap = (SHORT)round((float)(wm->sLineGap) * font->scale);
sTypoAscender = (SHORT)round((float)(wm->sTypoAscender) * font->scale);
sTypoDescender = (SHORT)round((float)(wm->sTypoDescender) * font->scale);
sTypoLineGap = (SHORT)round((float)(wm->sTypoLineGap) * font->scale);
usWinAscent = (USHORT)round((float)(wm->usWinAscent) * font->scale);
usWinDescent = (USHORT)round((float)(wm->usWinDescent) * font->scale);
sAvgCharWidth = (SHORT)round((float)(wm->sAvgCharWidth) * font->scale);
tm->tmAscent = (LONG)usWinAscent;
tm->tmDescent = (LONG)usWinDescent;
tm->tmHeight = tm->tmAscent + tm->tmDescent;
tm->tmInternalLeading = tm->tmHeight - (LONG)usUnitsPerEm;
if (tm->tmInternalLeading < 0)
tm->tmInternalLeading = 0;
tm->tmExternalLeading =
(LONG)(sAscender - sDescender + sLineGap) - tm->tmHeight;
if (tm->tmExternalLeading < 0)
tm->tmExternalLeading = 0;
/*
* Character widths are stored as PostScript metrics, which assume an
* em square size of 1000.
*/
tm->tmAveCharWidth = (LONG)sAvgCharWidth;
tm->tmMaxCharWidth = (LONG)round(
(font->afm->FontBBox.urx - font->afm->FontBBox.llx) *
font->scale * (float)(wm->usUnitsPerEm) / 1000.0);
tm->tmWeight = font->afm->Weight;
tm->tmItalic = (font->afm->ItalicAngle != 0.0);
tm->tmUnderlined = 0;
tm->tmStruckOut = 0;
tm->tmFirstChar = (WCHAR)(font->afm->Metrics[0].UV);
tm->tmLastChar =
(WCHAR)(font->afm->Metrics[font->afm->NumofMetrics - 1].UV);
tm->tmDefaultChar = 0x001f; /* Win2K does this - FIXME? */
tm->tmBreakChar = tm->tmFirstChar; /* should be 'space' */
/* Assume that a font with an em square size of 1000 is a PostScript font */
tm->tmPitchAndFamily = (font->afm->IsFixedPitch ? 0 : TMPF_FIXED_PITCH) |
((wm->usUnitsPerEm == 1000) ? TMPF_DEVICE : TMPF_TRUETYPE) |
TMPF_VECTOR; /* TMPF_VECTOR always set per Win32 API doc */
tm->tmCharSet = ANSI_CHARSET; /* FIXME */
tm->tmOverhang = 0;
tm->tmDigitizedAspectX = dc->devCaps->logPixelsY;
tm->tmDigitizedAspectY = dc->devCaps->logPixelsX;
/*
* This is kludgy. font->scale is used in several places in the driver
* to adjust PostScript-style metrics. Since these metrics have been
* "normalized" to an em-square size of 1000, font->scale needs to be
* similarly adjusted..
*/
font->scale *= (float)wm->usUnitsPerEm / 1000.0;
TRACE("Selected PS font '%s' size %d weight %ld.\n",
physDev->font.afm->FontName, physDev->font.size,
physDev->font.tm.tmWeight );
TRACE("H = %ld As = %ld Des = %ld IL = %ld EL = %ld\n",
physDev->font.tm.tmHeight, physDev->font.tm.tmAscent,
physDev->font.tm.tmDescent, physDev->font.tm.tmInternalLeading,
physDev->font.tm.tmExternalLeading);
}
/***********************************************************************
* PSDRV_FONT_SelectObject
......@@ -24,7 +136,6 @@ HFONT PSDRV_FONT_SelectObject( DC * dc, HFONT hfont )
PSDRV_PDEVICE *physDev = (PSDRV_PDEVICE *)dc->physDev;
BOOL bd = FALSE, it = FALSE;
AFMLISTENTRY *afmle;
AFM *afm;
FONTFAMILY *family;
char FaceName[LF_FACESIZE];
......@@ -133,56 +244,12 @@ HFONT PSDRV_FONT_SelectObject( DC * dc, HFONT hfont )
}
if(!afmle)
afmle = family->afmlist; /* not ideal */
TRACE("Got font '%s'\n", afmle->afm->FontName);
physDev->font.afm = afmle->afm;
ScaleFont(dc, &lf, physDev);
afm = afmle->afm;
physDev->font.afm = afm;
physDev->font.tm.tmHeight = INTERNAL_YWSTODS(dc, lf.lfHeight);
if(physDev->font.tm.tmHeight < 0) {
physDev->font.tm.tmHeight *= - (afm->FullAscender - afm->Descender) /
(afm->Ascender - afm->Descender);
TRACE("Fixed -ve height to %ld\n", physDev->font.tm.tmHeight);
}
physDev->font.size = physDev->font.tm.tmHeight * 1000.0 /
(afm->FullAscender - afm->Descender);
physDev->font.scale = physDev->font.size / 1000.0;
physDev->font.escapement = lf.lfEscapement;
physDev->font.tm.tmAscent = afm->FullAscender * physDev->font.scale;
physDev->font.tm.tmDescent = -afm->Descender * physDev->font.scale;
physDev->font.tm.tmInternalLeading = (afm->FullAscender - afm->Ascender)
* physDev->font.scale;
physDev->font.tm.tmExternalLeading = (1000.0 - afm->FullAscender)
* physDev->font.scale; /* ?? */
physDev->font.tm.tmAveCharWidth = afm->CharWidths[120] * /* x */
physDev->font.scale;
physDev->font.tm.tmMaxCharWidth = afm->CharWidths[77] * /* M */
physDev->font.scale;
physDev->font.tm.tmWeight = afm->Weight;
physDev->font.tm.tmItalic = afm->ItalicAngle != 0.0;
physDev->font.tm.tmUnderlined = lf.lfUnderline;
physDev->font.tm.tmStruckOut = lf.lfStrikeOut;
physDev->font.tm.tmFirstChar = 32;
physDev->font.tm.tmLastChar = 251;
physDev->font.tm.tmDefaultChar = 128;
physDev->font.tm.tmBreakChar = 32;
physDev->font.tm.tmPitchAndFamily = afm->IsFixedPitch ? 0 :
TMPF_FIXED_PITCH;
physDev->font.tm.tmPitchAndFamily |= TMPF_DEVICE;
physDev->font.tm.tmCharSet = ANSI_CHARSET;
physDev->font.tm.tmOverhang = 0;
physDev->font.tm.tmDigitizedAspectX = dc->devCaps->logPixelsY;
physDev->font.tm.tmDigitizedAspectY = dc->devCaps->logPixelsX;
physDev->font.set = FALSE;
TRACE("Selected PS font '%s' size %d weight %ld.\n",
physDev->font.afm->FontName, physDev->font.size,
physDev->font.tm.tmWeight );
TRACE("H = %ld As = %ld Des = %ld IL = %ld EL = %ld\n",
physDev->font.tm.tmHeight, physDev->font.tm.tmAscent,
physDev->font.tm.tmDescent, physDev->font.tm.tmInternalLeading,
physDev->font.tm.tmExternalLeading);
return prevfont;
}
......
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