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-rw-r--r--modules/freetype2/include/freetype/internal/ftobjs.h157
1 files changed, 106 insertions, 51 deletions
diff --git a/modules/freetype2/include/freetype/internal/ftobjs.h b/modules/freetype2/include/freetype/internal/ftobjs.h
index 25b18a53e..1c3c6ad45 100644
--- a/modules/freetype2/include/freetype/internal/ftobjs.h
+++ b/modules/freetype2/include/freetype/internal/ftobjs.h
@@ -4,7 +4,7 @@
/* */
/* The FreeType private base classes (specification). */
/* */
-/* Copyright 1996-2016 by */
+/* Copyright 1996-2018 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@@ -36,6 +36,7 @@
#include FT_INTERNAL_AUTOHINT_H
#include FT_INTERNAL_SERVICE_H
#include FT_INTERNAL_PIC_H
+#include FT_INTERNAL_CALC_H
#ifdef FT_CONFIG_OPTION_INCREMENTAL
#include FT_INCREMENTAL_H
@@ -84,14 +85,30 @@ FT_BEGIN_HEADER
: y + ( 3 * x >> 3 ) )
/* we use FT_TYPEOF to suppress signedness compilation warnings */
-#define FT_PAD_FLOOR( x, n ) ( (x) & ~FT_TYPEOF( x )( (n)-1 ) )
-#define FT_PAD_ROUND( x, n ) FT_PAD_FLOOR( (x) + ((n)/2), n )
-#define FT_PAD_CEIL( x, n ) FT_PAD_FLOOR( (x) + ((n)-1), n )
+#define FT_PAD_FLOOR( x, n ) ( (x) & ~FT_TYPEOF( x )( (n) - 1 ) )
+#define FT_PAD_ROUND( x, n ) FT_PAD_FLOOR( (x) + (n) / 2, n )
+#define FT_PAD_CEIL( x, n ) FT_PAD_FLOOR( (x) + (n) - 1, n )
#define FT_PIX_FLOOR( x ) ( (x) & ~FT_TYPEOF( x )63 )
#define FT_PIX_ROUND( x ) FT_PIX_FLOOR( (x) + 32 )
#define FT_PIX_CEIL( x ) FT_PIX_FLOOR( (x) + 63 )
+ /* specialized versions (for signed values) */
+ /* that don't produce run-time errors due to integer overflow */
+#define FT_PAD_ROUND_LONG( x, n ) FT_PAD_FLOOR( ADD_LONG( (x), (n) / 2 ), \
+ n )
+#define FT_PAD_CEIL_LONG( x, n ) FT_PAD_FLOOR( ADD_LONG( (x), (n) - 1 ), \
+ n )
+#define FT_PIX_ROUND_LONG( x ) FT_PIX_FLOOR( ADD_LONG( (x), 32 ) )
+#define FT_PIX_CEIL_LONG( x ) FT_PIX_FLOOR( ADD_LONG( (x), 63 ) )
+
+#define FT_PAD_ROUND_INT32( x, n ) FT_PAD_FLOOR( ADD_INT32( (x), (n) / 2 ), \
+ n )
+#define FT_PAD_CEIL_INT32( x, n ) FT_PAD_FLOOR( ADD_INT32( (x), (n) - 1 ), \
+ n )
+#define FT_PIX_ROUND_INT32( x ) FT_PIX_FLOOR( ADD_INT32( (x), 32 ) )
+#define FT_PIX_CEIL_INT32( x ) FT_PIX_FLOOR( ADD_INT32( (x), 63 ) )
+
/*
* character classification functions -- since these are used to parse
@@ -138,8 +155,8 @@ FT_BEGIN_HEADER
} FT_CMapRec;
- /* typecase any pointer to a charmap handle */
-#define FT_CMAP( x ) ((FT_CMap)( x ))
+ /* typecast any pointer to a charmap handle */
+#define FT_CMAP( x ) ( (FT_CMap)( x ) )
/* obvious macros */
#define FT_CMAP_PLATFORM_ID( x ) FT_CMAP( x )->charmap.platform_id
@@ -295,6 +312,27 @@ FT_BEGIN_HEADER
FT_CMap_Done( FT_CMap cmap );
+ /* adds LCD padding to Min and Max boundaries */
+ FT_BASE( void )
+ ft_lcd_padding( FT_Pos* Min,
+ FT_Pos* Max,
+ FT_GlyphSlot slot );
+
+#ifdef FT_CONFIG_OPTION_SUBPIXEL_RENDERING
+
+ typedef void (*FT_Bitmap_LcdFilterFunc)( FT_Bitmap* bitmap,
+ FT_Render_Mode render_mode,
+ FT_Byte* weights );
+
+
+ /* This is the default LCD filter, an in-place, 5-tap FIR filter. */
+ FT_BASE( void )
+ ft_lcd_filter_fir( FT_Bitmap* bitmap,
+ FT_Render_Mode mode,
+ FT_LcdFiveTapFilter weights );
+
+#endif /* FT_CONFIG_OPTION_SUBPIXEL_RENDERING */
+
/*************************************************************************/
/* */
/* <Struct> */
@@ -342,6 +380,21 @@ FT_BEGIN_HEADER
/* this data when first opened. This field exists only if */
/* @FT_CONFIG_OPTION_INCREMENTAL is defined. */
/* */
+ /* no_stem_darkening :: */
+ /* Overrides the module-level default, see @stem-darkening[cff], */
+ /* for example. FALSE and TRUE toggle stem darkening on and off, */
+ /* respectively, value~-1 means to use the module/driver default. */
+ /* */
+ /* random_seed :: */
+ /* If positive, override the seed value for the CFF `random' */
+ /* operator. Value~0 means to use the font's value. Value~-1 */
+ /* means to use the CFF driver's default. */
+ /* */
+ /* lcd_weights :: */
+ /* lcd_filter_func :: */
+ /* If subpixel rendering is activated, the LCD filtering weights */
+ /* and callback function. */
+ /* */
/* refcount :: */
/* A counter initialized to~1 at the time an @FT_Face structure is */
/* created. @FT_Reference_Face increments this counter, and */
@@ -350,9 +403,9 @@ FT_BEGIN_HEADER
/* */
typedef struct FT_Face_InternalRec_
{
- FT_Matrix transform_matrix;
- FT_Vector transform_delta;
- FT_Int transform_flags;
+ FT_Matrix transform_matrix;
+ FT_Vector transform_delta;
+ FT_Int transform_flags;
FT_ServiceCacheRec services;
@@ -360,7 +413,15 @@ FT_BEGIN_HEADER
FT_Incremental_InterfaceRec* incremental_interface;
#endif
- FT_Int refcount;
+ FT_Char no_stem_darkening;
+ FT_Int32 random_seed;
+
+#ifdef FT_CONFIG_OPTION_SUBPIXEL_RENDERING
+ FT_LcdFiveTapFilter lcd_weights; /* filter weights, if any */
+ FT_Bitmap_LcdFilterFunc lcd_filter_func; /* filtering callback */
+#endif
+
+ FT_Int refcount;
} FT_Face_InternalRec;
@@ -413,8 +474,6 @@ FT_BEGIN_HEADER
} FT_GlyphSlot_InternalRec;
-#if 0
-
/*************************************************************************/
/* */
/* <Struct> */
@@ -422,17 +481,25 @@ FT_BEGIN_HEADER
/* */
/* <Description> */
/* This structure contains the internal fields of each FT_Size */
- /* object. Currently, it's empty. */
+ /* object. */
+ /* */
+ /* <Fields> */
+ /* module_data :: Data specific to a driver module. */
+ /* */
+ /* autohint_mode :: The used auto-hinting mode. */
+ /* */
+ /* autohint_metrics :: Metrics used by the auto-hinter. */
/* */
/*************************************************************************/
typedef struct FT_Size_InternalRec_
{
- /* empty */
+ void* module_data;
- } FT_Size_InternalRec;
+ FT_Render_Mode autohint_mode;
+ FT_Size_Metrics autohint_metrics;
-#endif
+ } FT_Size_InternalRec;
/*************************************************************************/
@@ -473,7 +540,8 @@ FT_BEGIN_HEADER
/* typecast an object to an FT_Module */
-#define FT_MODULE( x ) ((FT_Module)( x ))
+#define FT_MODULE( x ) ( (FT_Module)(x) )
+
#define FT_MODULE_CLASS( x ) FT_MODULE( x )->clazz
#define FT_MODULE_LIBRARY( x ) FT_MODULE( x )->library
#define FT_MODULE_MEMORY( x ) FT_MODULE( x )->memory
@@ -559,9 +627,9 @@ FT_BEGIN_HEADER
/* a few macros used to perform easy typecasts with minimal brain damage */
-#define FT_FACE( x ) ((FT_Face)(x))
-#define FT_SIZE( x ) ((FT_Size)(x))
-#define FT_SLOT( x ) ((FT_GlyphSlot)(x))
+#define FT_FACE( x ) ( (FT_Face)(x) )
+#define FT_SIZE( x ) ( (FT_Size)(x) )
+#define FT_SLOT( x ) ( (FT_GlyphSlot)(x) )
#define FT_FACE_DRIVER( x ) FT_FACE( x )->driver
#define FT_FACE_LIBRARY( x ) FT_FACE_DRIVER( x )->root.library
@@ -662,6 +730,12 @@ FT_BEGIN_HEADER
ft_glyphslot_free_bitmap( FT_GlyphSlot slot );
+ /* Preset bitmap metrics of an outline glyphslot prior to rendering. */
+ FT_BASE( void )
+ ft_glyphslot_preset_bitmap( FT_GlyphSlot slot,
+ FT_Render_Mode mode,
+ const FT_Vector* origin );
+
/* Allocate a new bitmap buffer in a glyph slot. */
FT_BASE( FT_Error )
ft_glyphslot_alloc_bitmap( FT_GlyphSlot slot,
@@ -688,10 +762,10 @@ FT_BEGIN_HEADER
/*************************************************************************/
-#define FT_RENDERER( x ) ((FT_Renderer)( x ))
-#define FT_GLYPH( x ) ((FT_Glyph)( x ))
-#define FT_BITMAP_GLYPH( x ) ((FT_BitmapGlyph)( x ))
-#define FT_OUTLINE_GLYPH( x ) ((FT_OutlineGlyph)( x ))
+#define FT_RENDERER( x ) ( (FT_Renderer)(x) )
+#define FT_GLYPH( x ) ( (FT_Glyph)(x) )
+#define FT_BITMAP_GLYPH( x ) ( (FT_BitmapGlyph)(x) )
+#define FT_OUTLINE_GLYPH( x ) ( (FT_OutlineGlyph)(x) )
typedef struct FT_RendererRec_
@@ -722,7 +796,7 @@ FT_BEGIN_HEADER
/* typecast a module into a driver easily */
-#define FT_DRIVER( x ) ((FT_Driver)(x))
+#define FT_DRIVER( x ) ( (FT_Driver)(x) )
/* typecast a module as a driver, and get its driver class */
#define FT_DRIVER_CLASS( x ) FT_DRIVER( x )->clazz
@@ -775,12 +849,7 @@ FT_BEGIN_HEADER
/* This hook is used by the TrueType debugger. It must be set to an */
/* alternate truetype bytecode interpreter function. */
-#define FT_DEBUG_HOOK_TRUETYPE 0
-
-
- typedef void (*FT_Bitmap_LcdFilterFunc)( FT_Bitmap* bitmap,
- FT_Render_Mode render_mode,
- FT_Library library );
+#define FT_DEBUG_HOOK_TRUETYPE 0
/*************************************************************************/
@@ -821,20 +890,12 @@ FT_BEGIN_HEADER
/* handle to the current renderer for the */
/* FT_GLYPH_FORMAT_OUTLINE format. */
/* */
- /* auto_hinter :: XXX */
+ /* auto_hinter :: The auto-hinter module interface. */
/* */
- /* raster_pool :: The raster object's render pool. This can */
- /* ideally be changed dynamically at run-time. */
- /* */
- /* raster_pool_size :: The size of the render pool in bytes. */
- /* */
- /* debug_hooks :: XXX */
- /* */
- /* lcd_filter :: If subpixel rendering is activated, the */
- /* selected LCD filter mode. */
- /* */
- /* lcd_extra :: If subpixel rendering is activated, the number */
- /* of extra pixels needed for the LCD filter. */
+ /* debug_hooks :: An array of four function pointers that allow */
+ /* debuggers to hook into a font format's */
+ /* interpreter. Currently, only the TrueType */
+ /* bytecode debugger uses this. */
/* */
/* lcd_weights :: If subpixel rendering is activated, the LCD */
/* filter weights, if any. */
@@ -867,16 +928,10 @@ FT_BEGIN_HEADER
FT_Renderer cur_renderer; /* current outline renderer */
FT_Module auto_hinter;
- FT_Byte* raster_pool; /* scan-line conversion */
- /* render pool */
- FT_ULong raster_pool_size; /* size of render pool in bytes */
-
FT_DebugHook_Func debug_hooks[4];
#ifdef FT_CONFIG_OPTION_SUBPIXEL_RENDERING
- FT_LcdFilter lcd_filter;
- FT_Int lcd_extra; /* number of extra pixels */
- FT_Byte lcd_weights[5]; /* filter weights, if any */
+ FT_LcdFiveTapFilter lcd_weights; /* filter weights, if any */
FT_Bitmap_LcdFilterFunc lcd_filter_func; /* filtering callback */
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-10 10:50:37 +0000