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* src/base/ftbitmap.c (FT_Bitmap_Embolden): Handle negative pitch.

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Handle FT_PIXEL_MODE_GRAY with num_gray != 256.
Improve speed for FT_PIXEL_MODE_GRAY.
(ft_bitmap_assure_buffer): Accept FT_PIXEL_MODE_LCD and
FT_PIXEL_MODE_LCD_V.
This commit is contained in:
Werner Lemberg 2005-05-28 21:52:37 +00:00
parent e70371c410
commit c162eac55c
2 changed files with 27 additions and 3 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2005-05-28 Chia I Wu <b90201047@ntu.edu.tw>
* src/base/ftbitmap.c (FT_Bitmap_Embolden): Handle negative pitch.
Handle FT_PIXEL_MODE_GRAY with num_gray != 256.
Improve speed for FT_PIXEL_MODE_GRAY.
(ft_bitmap_assure_buffer): Accept FT_PIXEL_MODE_LCD and
FT_PIXEL_MODE_LCD_V.
2005-05-27 Chia I Wu <b90201047@ntu.edu.tw>
* src/base/ftsynth.c (FT_GlyphSlot_Embolden): Initialize `error'.

22
src/base/ftbitmap.c
View File

@ -115,6 +115,8 @@
switch ( bitmap->pixel_mode )
{
case FT_PIXEL_MODE_MONO:
case FT_PIXEL_MODE_LCD:
case FT_PIXEL_MODE_LCD_V:
ppb = 8;
break;
case FT_PIXEL_MODE_GRAY2:
@ -210,7 +212,7 @@
else
{
pitch = -pitch;
p = bitmap->buffer + pitch * ( bitmap->rows - ystr - 1 );
p = bitmap->buffer + pitch * ( bitmap->rows - 1 );
}
/* for each row */
@ -237,16 +239,30 @@
/* the maximum value of 8 for `xstr' comes from here */
if ( x > 0 )
p[x] |= p[x - 1] << ( 8 - i );
#if 0
if ( p[x] == 0xff )
break;
#endif
}
else if ( bitmap->pixel_mode == FT_PIXEL_MODE_GRAY )
{
if ( x - i >= 0 )
{
if ( p[x] + p[x - i] > 0xff )
p[x] = 0xff;
if ( p[x] + p[x - i] > bitmap->num_grays )
{
p[x] = bitmap->num_grays;
break;
}
else
{
p[x] += p[x - i];
if ( p[x] == bitmap->num_grays )
break;
}
}
else
break;
}
}
}