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gdi32: Improve outline text metrics calculation, especially if unitsPerEm is not power of 2.

This commit is contained in:
Akihiro Sagawa 2013-03-14 20:08:14 +09:00 committed by Alexandre Julliard
parent 786b931e45
commit 3a96891061
1 changed files with 4 additions and 5 deletions
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9
dlls/gdi32/freetype.c
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@ -6775,7 +6775,7 @@ static BOOL get_outline_text_metrics(GdiFont *font)
TT_OS2 *pOS2;
TT_HoriHeader *pHori;
TT_Postscript *pPost;
FT_Fixed x_scale, y_scale;
FT_Fixed em_scale;
WCHAR *family_nameW, *style_nameW, *face_nameW, *full_nameW;
char *cp;
INT ascent, descent;
@ -6837,8 +6837,7 @@ static BOOL get_outline_text_metrics(GdiFont *font)
needed += lenfull;
x_scale = ft_face->size->metrics.x_scale;
y_scale = ft_face->size->metrics.y_scale;
em_scale = (FT_Fixed)MulDiv(font->ppem, 1 << 16, ft_face->units_per_EM);
pOS2 = pFT_Get_Sfnt_Table(ft_face, ft_sfnt_os2);
if(!pOS2) {
@ -6878,8 +6877,8 @@ static BOOL get_outline_text_metrics(GdiFont *font)
font->ntmCellHeight = ascent + descent;
font->ntmAvgWidth = pOS2->xAvgCharWidth;
#define SCALE_X(x) ((pFT_MulFix(x, x_scale) + 32) >> 6)
#define SCALE_Y(y) ((pFT_MulFix(y, y_scale) + 32) >> 6)
#define SCALE_X(x) (pFT_MulFix(x, em_scale))
#define SCALE_Y(y) (pFT_MulFix(y, em_scale))
if(font->yMax) {
TM.tmAscent = font->yMax;