Add font attributes to control the hinting algorithm used by the
FreeType font provider:
DFFA_AUTOHINTING forces use of the auto-hinter over the font's
native hinter.
DFFA_LIGHT selects a lighter hinting algorithm for non-monochrome
modes. It generates glyphs which are more fuzzy but better resemble
its original shape. It implies use of the auto-hinter.
---
include/directfb.h | 6 +++++-
interfaces/IDirectFBFont/idirectfbfont_ft2.c | 15 +++++++++++++--
2 files changed, 18 insertions(+), 3 deletions(-)
diff --git a/include/directfb.h b/include/directfb.h
index 6b34abd..07ef0bc 100644
--- a/include/directfb.h
+++ b/include/directfb.h
@@ -1027,7 +1027,11 @@ typedef enum {
DFFA_NOBITMAP = 0x00000020, /* ignore bitmap strikes; for
bitmap-only fonts this flag is
ignored */
- DFFA_OUTLINED = 0x00000040
+ DFFA_OUTLINED = 0x00000040,
+ DFFA_AUTOHINTING = 0x00000080, /* prefer auto-hinter over the font's
+ native hinter */
+ DFFA_LIGHT = 0x00000100, /* use a lighter hinting algorithm for
+ non-monochrome modes */
} DFBFontAttributes;
/*
diff --git a/interfaces/IDirectFBFont/idirectfbfont_ft2.c
b/interfaces/IDirectFBFont/idirectfbfont_ft2.c
index cb9b8d0..8551756 100644
--- a/interfaces/IDirectFBFont/idirectfbfont_ft2.c
+++ b/interfaces/IDirectFBFont/idirectfbfont_ft2.c
@@ -59,11 +59,18 @@
#include FT_GLYPH_H
#ifndef FT_LOAD_TARGET_MONO
- /* FT_LOAD_TARGET_MONO was added in FreeType-2.1.3, we have to use (less
good)
- FT_LOAD_MONOCHROME with older versions. Make it an alias for code
simplicity. */
+ /* FT_LOAD_TARGET_MONO was added in FreeType-2.1.3. We have to use
+ (less good) FT_LOAD_MONOCHROME with older versions. Make it an
+ alias for code simplicity. */
#define FT_LOAD_TARGET_MONO FT_LOAD_MONOCHROME
#endif
+#ifndef FT_LOAD_FORCE_AUTOHINT
+ #define FT_LOAD_FORCE_AUTOHINT 0
+#endif
+#ifndef FT_LOAD_TARGET_LIGHT
+ #define FT_LOAD_TARGET_LIGHT 0
+#endif
static DFBResult
Probe( IDirectFBFont_ProbeContext *ctx );
@@ -882,6 +889,10 @@ Construct( IDirectFBFont *thiz,
load_flags |= FT_LOAD_NO_HINTING;
if (desc->attributes & DFFA_NOBITMAP)
load_flags |= FT_LOAD_NO_BITMAP;
+ if (desc->attributes & DFFA_AUTOHINTING)
+ load_flags |= FT_LOAD_FORCE_AUTOHINT;
+ if (desc->attributes & DFFA_LIGHT)
+ load_flags |= FT_LOAD_TARGET_LIGHT;
if (desc->attributes & DFFA_NOCHARMAP)
disable_charmap = true;
if (desc->attributes & DFFA_NOKERNING)
--
1.7.1
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