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more fixed point work

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This commit is contained in:
Tomas Frydrych
2007-01-23 11:48:04 +00:00
parent b8b0d01c91
commit 685c583d51
4 changed files with 56 additions and 7 deletions
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13
clutter/pango/pangoclutter-font.c
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@ -70,7 +70,7 @@ _pango_clutter_font_new (PangoClutterFontMap *fontmap_, FcPattern *pattern)
PangoFontMap *fontmap = PANGO_FONT_MAP (fontmap_);
PangoClutterFont *font;
double d;
g_return_val_if_fail (fontmap != NULL, NULL);
g_return_val_if_fail (pattern != NULL, NULL);
@ -79,8 +79,15 @@ _pango_clutter_font_new (PangoClutterFontMap *fontmap_, FcPattern *pattern)
NULL);
if (FcPatternGetDouble (pattern, FC_PIXEL_SIZE, 0, &d) == FcResultMatch)
font->size = d * PANGO_SCALE;
{
/* Cannot use 16.16 fixed here, because multiplying by PANGO_SCALE
* could easily take us out of range, but we do not need the 16 bit
* precission for the fraction, so we use 20.12 fixed point here
*/
int f = CLUTTER_FLOAT_TO_FIXED (d) >> 4;
font->size = (f * PANGO_SCALE) >> 12;
}
return font;
}