/***************************************************************************//* *//* ftimage.h *//* *//* FreeType glyph image formats and default raster interface *//* (specification). *//* *//* Copyright 1996-2001, 2002 by *//* David Turner, Robert Wilhelm, and Werner Lemberg. *//* *//* This file is part of the FreeType project, and may only be used, *//* modified, and distributed under the terms of the FreeType project *//* license, LICENSE.TXT. By continuing to use, modify, or distribute *//* this file you indicate that you have read the license and *//* understand and accept it fully. *//* *//***************************************************************************/ /*************************************************************************/ /* */ /* Note: A `raster' is simply a scan-line converter, used to render */ /* FT_Outlines into FT_Bitmaps. */ /* */ /*************************************************************************/ #ifndef __FTIMAGE_H__#define __FTIMAGE_H__ /* _STANDALONE_ is from ftgrays.c */#ifndef _STANDALONE_#include <ft2build.h>#endif FT_BEGIN_HEADER /*************************************************************************/ /* */ /* <Section> */ /* basic_types */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* <Type> */ /* FT_Pos */ /* */ /* <Description> */ /* The type FT_Pos is a 32-bit integer used to store vectorial */ /* coordinates. Depending on the context, these can represent */ /* distances in integer font units, or 26.6 fixed float pixel */ /* coordinates. */ /* */ typedef signed long FT_Pos; /*************************************************************************/ /* */ /* <Struct> */ /* FT_Vector */ /* */ /* <Description> */ /* A simple structure used to store a 2D vector; coordinates are of */ /* the FT_Pos type. */ /* */ /* <Fields> */ /* x :: The horizontal coordinate. */ /* y :: The vertical coordinate. */ /* */ typedef struct FT_Vector_ { FT_Pos x; FT_Pos y; } FT_Vector; /*************************************************************************/ /* */ /* <Struct> */ /* FT_BBox */ /* */ /* <Description> */ /* A structure used to hold an outline's bounding box, i.e., the */ /* coordinates of its extrema in the horizontal and vertical */ /* directions. */ /* */ /* <Fields> */ /* xMin :: The horizontal minimum (left-most). */ /* */ /* yMin :: The vertical minimum (bottom-most). */ /* */ /* xMax :: The horizontal maximum (right-most). */ /* */ /* yMax :: The vertical maximum (top-most). */ /* */ typedef struct FT_BBox_ { FT_Pos xMin, yMin; FT_Pos xMax, yMax; } FT_BBox; /*************************************************************************/ /* */ /* <Enum> */ /* FT_Pixel_Mode */ /* */ /* <Description> */ /* An enumeration type used to describe the format of pixels in a */ /* given bitmap. Note that additional formats may be added in the */ /* future. */ /* */ /* <Values> */ /* FT_PIXEL_MODE_NONE :: */ /* Value 0 is reserved. */ /* */ /* FT_PIXEL_MODE_MONO :: */ /* A monochrome bitmap, using 1 bit per pixel. Note that pixels */ /* are stored in most-significant order (MSB), which means that */ /* the left-most pixel in a byte has value 128. */ /* */ /* FT_PIXEL_MODE_GRAY :: */ /* An 8-bit bitmap, generally used to represent anti-aliased glyph */ /* images. Each pixel is stored in one byte. Note that the number */ /* of value "gray" levels is stored in the `num_bytes' field of */ /* the @FT_Bitmap structure (it generally is 256). */ /* */ /* FT_PIXEL_MODE_GRAY2 :: */ /* A 2-bit/pixel bitmap, used to represent embedded anti-aliased */ /* bitmaps in font files according to the OpenType specification. */ /* We haven't found a single font using this format, however. */ /* */ /* FT_PIXEL_MODE_GRAY4 :: */ /* A 4-bit/pixel bitmap, used to represent embedded anti-aliased */ /* bitmaps in font files according to the OpenType specification. */ /* We haven't found a single font using this format, however. */ /* */ /* FT_PIXEL_MODE_LCD :: */ /* An 8-bit bitmap, used to represent RGB or BGR decimated glyph */ /* images used for display on LCD displays; the bitmap's width is */ /* three times wider than the original glyph image. See also */ /* @FT_RENDER_MODE_LCD. */ /* */ /* FT_PIXEL_MODE_LCD_V :: */ /* An 8-bit bitmap, used to represent RGB or BGR decimated glyph */ /* images used for display on rotated LCD displays; the bitmap's */ /* height is three times taller than the original glyph image. */ /* See also @FT_RENDER_MODE_LCD_V. */ /* */ typedef enum FT_Pixel_Mode_ { FT_PIXEL_MODE_NONE = 0, FT_PIXEL_MODE_MONO, FT_PIXEL_MODE_GRAY, FT_PIXEL_MODE_GRAY2, FT_PIXEL_MODE_GRAY4, FT_PIXEL_MODE_LCD, FT_PIXEL_MODE_LCD_V, FT_PIXEL_MODE_MAX /* do not remove */ } FT_Pixel_Mode; /*************************************************************************/ /* */ /* <Enum> */ /* ft_pixel_mode_xxx */ /* */ /* <Description> */ /* A list of deprecated constants. Use the corresponding */ /* @FT_Pixel_Mode values instead. */ /* */ /* <Values> */ /* ft_pixel_mode_none :: see @FT_PIXEL_MODE_NONE */ /* ft_pixel_mode_mono :: see @FT_PIXEL_MODE_MONO */ /* ft_pixel_mode_grays :: see @FT_PIXEL_MODE_GRAY */ /* ft_pixel_mode_pal2 :: see @FT_PIXEL_MODE_GRAY2 */ /* ft_pixel_mode_pal4 :: see @FT_PIXEL_MODE_GRAY4 */ /* */#define ft_pixel_mode_none FT_PIXEL_MODE_NONE#define ft_pixel_mode_mono FT_PIXEL_MODE_MONO#define ft_pixel_mode_grays FT_PIXEL_MODE_GRAY#define ft_pixel_mode_pal2 FT_PIXEL_MODE_GRAY2#define ft_pixel_mode_pal4 FT_PIXEL_MODE_GRAY4 /* */ #if 0 /*************************************************************************/ /* */ /* <Enum> */ /* FT_Palette_Mode */ /* */ /* <Description> */ /* THIS TYPE IS DEPRECATED. DO NOT USE IT! */ /* */ /* An enumeration type used to describe the format of a bitmap */ /* palette, used with ft_pixel_mode_pal4 and ft_pixel_mode_pal8. */ /* */ /* <Fields> */ /* ft_palette_mode_rgb :: The palette is an array of 3-bytes RGB */ /* records. */ /* */ /* ft_palette_mode_rgba :: The palette is an array of 4-bytes RGBA */ /* records. */ /* */ /* <Note> */ /* As ft_pixel_mode_pal2, pal4 and pal8 are currently unused by */ /* FreeType, these types are not handled by the library itself. */ /* */ typedef enum FT_Palette_Mode_ { ft_palette_mode_rgb = 0, ft_palette_mode_rgba, ft_palettte_mode_max /* do not remove */ } FT_Palette_Mode; /* */ #endif /*************************************************************************/ /* */ /* <Struct> */ /* FT_Bitmap */ /* */ /* <Description> */ /* A structure used to describe a bitmap or pixmap to the raster. */ /* Note that we now manage pixmaps of various depths through the */ /* `pixel_mode' field. */ /* */ /* <Fields> */ /* rows :: The number of bitmap rows. */ /* */ /* width :: The number of pixels in bitmap row. */ /* */ /* pitch :: The pitch's absolute value is the number of bytes */ /* taken by one bitmap row, including padding. */ /* However, the pitch is positive when the bitmap has */ /* a `down' flow, and negative when it has an `up' */ /* flow. In all cases, the pitch is an offset to add */ /* to a bitmap pointer in order to go down one row. */ /* */ /* buffer :: A typeless pointer to the bitmap buffer. This */ /* value should be aligned on 32-bit boundaries in */ /* most cases. */ /* */ /* num_grays :: This field is only used with */ /* `FT_PIXEL_MODE_GRAY'; it gives the number of gray */ /* levels used in the bitmap. */ /* */ /* pixel_mode :: The pixel_mode, i.e., how pixel bits are stored. */ /* */ /* palette_mode :: This field is only used with paletted pixel modes; */ /* it indicates how the palette is stored. */ /* */ /* palette :: A typeless pointer to the bitmap palette; only */ /* used for paletted pixel modes. */ /* */ /* <Note> */ /* For now, the only pixel mode supported by FreeType are mono and */ /* grays. However, drivers might be added in the future to support */ /* more `colorful' options. */ /* */ /* When using pixel modes pal2, pal4 and pal8 with a void `palette' */ /* field, a gray pixmap with respectively 4, 16, and 256 levels of */ /* gray is assumed. This, in order to be compatible with some */ /* embedded bitmap formats defined in the TrueType specification. */ /* */ /* Note that no font was found presenting such embedded bitmaps, so */ /* this is currently completely unhandled by the library. */ /* */ typedef struct FT_Bitmap_ { int rows; int width; int pitch; unsigned char* buffer; short num_grays; char pixel_mode; char palette_mode; void* palette; } FT_Bitmap; /*************************************************************************/ /* */ /* <Section> */ /* outline_processing */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* <Struct> */ /* FT_Outline */ /* */ /* <Description> */ /* This structure is used to describe an outline to the scan-line */ /* converter. */ /* */ /* <Fields> */ /* n_contours :: The number of contours in the outline. */ /* */ /* n_points :: The number of points in the outline. */ /* */ /* points :: A pointer to an array of `n_points' FT_Vector */ /* elements, giving the outline's point coordinates. */ /* */ /* tags :: A pointer to an array of `n_points' chars, giving */ /* each outline point's type. If bit 0 is unset, the */ /* point is `off' the curve, i.e. a Bezier control */ /* point, while it is `on' when set. */ /* */ /* Bit 1 is meaningful for `off' points only. If set, */ /* it indicates a third-order Bezier arc control point; */ /* and a second-order control point if unset. */ /* */ /* contours :: An array of `n_contours' shorts, giving the end */ /* point of each contour within the outline. For */ /* example, the first contour is defined by the points */ /* `0' to `contours[0]', the second one is defined by */ /* the points `contours[0]+1' to `contours[1]', etc. */ /* */ /* flags :: A set of bit flags used to characterize the outline */ /* and give hints to the scan-converter and hinter on */ /* how to convert/grid-fit it. See FT_Outline_Flags. */ /* */ typedef struct FT_Outline_ { short n_contours; /* number of contours in glyph */ short n_points; /* number of points in the glyph */ FT_Vector* points; /* the outline's points */ char* tags; /* the points flags */ short* contours; /* the contour end points */ int flags; /* outline masks */ } FT_Outline; /*************************************************************************/ /* */ /* <Enum> */ /* FT_Outline_Flags */ /* */ /* <Description> */ /* A simple type used to enumerates the flags in an outline's */ /* `outline_flags' field. */ /* */ /* <Values> */ /* FT_OUTLINE_NONE :: Value 0 is reserved. */ /* */ /* FT_OUTLINE_OWNER :: If set, this flag indicates that the */ /* outline's field arrays (i.e. */ /* `points', `flags' & `contours') are */ /* `owned' by the outline object, and */ /* should thus be freed when it is */ /* destroyed. */ /* */ /* FT_OUTLINE_EVEN_ODD_FILL :: By default, outlines are filled using */ /* the non-zero winding rule. If set to */ /* 1, the outline will be filled using */ /* the even-odd fill rule (only works */ /* with the smooth raster). */ /* */ /* FT_OUTLINE_REVERSE_FILL :: By default, outside contours of an */ /* outline are oriented in clock-wise */ /* direction, as defined in the TrueType */ /* specification. This flag is set if */ /* the outline uses the opposite */ /* direction (typically for Type 1 */ /* fonts). This flag is ignored by the */ /* scan-converter. However, it is very */ /* important for the auto-hinter. */ /* */ /* FT_OUTLINE_IGNORE_DROPOUTS :: By default, the scan converter will */ /* try to detect drop-outs in an outline */ /* and correct the glyph bitmap to */ /* ensure consistent shape continuity. */ /* If set, this flag hints the scan-line */ /* converter to ignore such cases. */ /* */ /* FT_OUTLINE_HIGH_PRECISION :: This flag indicates that the */ /* scan-line converter should try to */ /* convert this outline to bitmaps with */ /* the highest possible quality. It is */ /* typically set for small character */ /* sizes. Note that this is only a */ /* hint, that might be completely */ /* ignored by a given scan-converter. */ /* */ /* FT_OUTLINE_SINGLE_PASS :: This flag is set to force a given */ /* scan-converter to only use a single */ /* pass over the outline to render a */ /* bitmap glyph image. Normally, it is */ /* set for very large character sizes. */ /* It is only a hint, that might be */ /* completely ignored by a given */ /* scan-converter. */ /* */ typedef enum FT_Outline_Flags_ { FT_OUTLINE_NONE = 0, FT_OUTLINE_OWNER = 1, FT_OUTLINE_EVEN_ODD_FILL = 2, FT_OUTLINE_REVERSE_FILL = 4, FT_OUTLINE_IGNORE_DROPOUTS = 8, FT_OUTLINE_HIGH_PRECISION = 256, FT_OUTLINE_SINGLE_PASS = 512 } FT_Outline_Flags; /************************************************************************* * * @enum: * ft_outline_xxx * * @description: * These constants are deprecated. Please use the corresponding * @FT_OUTLINE_XXX values. * * @values: * ft_outline_none :: See @FT_OUTLINE_NONE. * ft_outline_owner :: See @FT_OUTLINE_OWNER. * ft_outline_even_odd_fill :: See @FT_OUTLINE_EVEN_ODD_FILL. * ft_outline_reverse_fill :: See @FT_OUTLINE_REVERSE_FILL. * ft_outline_ignore_dropouts :: See @FT_OUTLINE_IGNORE_DROPOUTS. * ft_outline_high_precision :: See @FT_OUTLINE_HIGH_PRECISION. * ft_outline_single_pass :: See @FT_OUTLINE_SINGLE_PASS. */#define ft_outline_none FT_OUTLINE_NONE#define ft_outline_owner FT_OUTLINE_OWNER#define ft_outline_even_odd_fill FT_OUTLINE_EVEN_ODD_FILL#define ft_outline_reverse_fill FT_OUTLINE_REVERSE_FILL#define ft_outline_ignore_dropouts FT_OUTLINE_IGNORE_DROPOUTS#define ft_outline_high_precision FT_OUTLINE_HIGH_PRECISION#define ft_outline_single_pass FT_OUTLINE_SINGLE_PASS /* */ #define FT_CURVE_TAG( flag ) ( flag & 3 ) #define FT_CURVE_TAG_ON 1#define FT_CURVE_TAG_CONIC 0#define FT_CURVE_TAG_CUBIC 2 #define FT_CURVE_TAG_TOUCH_X 8 /* reserved for the TrueType hinter */#define FT_CURVE_TAG_TOUCH_Y 16 /* reserved for the TrueType hinter */ #define FT_CURVE_TAG_TOUCH_BOTH ( FT_CURVE_TAG_TOUCH_X | \ FT_CURVE_TAG_TOUCH_Y ) #define FT_Curve_Tag_On FT_CURVE_TAG_ON#define FT_Curve_Tag_Conic FT_CURVE_TAG_CONIC#define FT_Curve_Tag_Cubic FT_CURVE_TAG_CUBIC#define FT_Curve_Tag_Touch_X FT_CURVE_TAG_TOUCH_X#define FT_Curve_Tag_Touch_Y FT_CURVE_TAG_TOUCH_Y /*************************************************************************/ /* */ /* <FuncType> */ /* FT_Outline_MoveToFunc */ /* */ /* <Description> */ /* A function pointer type used to describe the signature of a `move */ /* to' function during outline walking/decomposition. */ /* */ /* A `move to' is emitted to start a new contour in an outline. */ /* */ /* <Input> */ /* to :: A pointer to the target point of the `move to'. */ /* */ /* user :: A typeless pointer which is passed from the caller of the */ /* decomposition function. */ /* */ /* <Return> */ /* Error code. 0 means success. */ /* */ typedef int (*FT_Outline_MoveToFunc)( FT_Vector* to, void* user ); #define FT_Outline_MoveTo_Func FT_Outline_MoveToFuncLines 1–500 of 1241. 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/***************************************************************************/ /* */ /* ftimage.h */ /* */ /* FreeType glyph image formats and default raster interface */ /* (specification). */ /* */ /* Copyright 1996-2001, 2002 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and may only be used, */ /* modified, and distributed under the terms of the FreeType project */ /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ /* this file you indicate that you have read the license and */ /* understand and accept it fully. */ /* */ /***************************************************************************/ /*************************************************************************/ /* */ /* Note: A `raster' is simply a scan-line converter, used to render */ /* FT_Outlines into FT_Bitmaps. */ /* */ /*************************************************************************/ #ifndef __FTIMAGE_H__ #define __FTIMAGE_H__ /* _STANDALONE_ is from ftgrays.c */ #ifndef _STANDALONE_ #include <ft2build.h> #endif FT_BEGIN_HEADER /*************************************************************************/ /* */ /* <Section> */ /* basic_types */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* <Type> */ /* FT_Pos */ /* */ /* <Description> */ /* The type FT_Pos is a 32-bit integer used to store vectorial */ /* coordinates. Depending on the context, these can represent */ /* distances in integer font units, or 26.6 fixed float pixel */ /* coordinates. */ /* */ typedef signed long FT_Pos; /*************************************************************************/ /* */ /* <Struct> */ /* FT_Vector */ /* */ /* <Description> */ /* A simple structure used to store a 2D vector; coordinates are of */ /* the FT_Pos type. */ /* */ /* <Fields> */ /* x :: The horizontal coordinate. */ /* y :: The vertical coordinate. */ /* */ typedef struct FT_Vector_ { FT_Pos x; FT_Pos y; } FT_Vector; /*************************************************************************/ /* */ /* <Struct> */ /* FT_BBox */ /* */ /* <Description> */ /* A structure used to hold an outline's bounding box, i.e., the */ /* coordinates of its extrema in the horizontal and vertical */ /* directions. */ /* */ /* <Fields> */ /* xMin :: The horizontal minimum (left-most). */ /* */ /* yMin :: The vertical minimum (bottom-most). */ /* */ /* xMax :: The horizontal maximum (right-most). */ /* */ /* yMax :: The vertical maximum (top-most). */ /* */ typedef struct FT_BBox_ { FT_Pos xMin, yMin; FT_Pos xMax, yMax; } FT_BBox; /*************************************************************************/ /* */ /* <Enum> */ /* FT_Pixel_Mode */ /* */ /* <Description> */ /* An enumeration type used to describe the format of pixels in a */ /* given bitmap. Note that additional formats may be added in the */ /* future. */ /* */ /* <Values> */ /* FT_PIXEL_MODE_NONE :: */ /* Value 0 is reserved. */ /* */ /* FT_PIXEL_MODE_MONO :: */ /* A monochrome bitmap, using 1 bit per pixel. Note that pixels */ /* are stored in most-significant order (MSB), which means that */ /* the left-most pixel in a byte has value 128. */ /* */ /* FT_PIXEL_MODE_GRAY :: */ /* An 8-bit bitmap, generally used to represent anti-aliased glyph */ /* images. Each pixel is stored in one byte. Note that the number */ /* of value "gray" levels is stored in the `num_bytes' field of */ /* the @FT_Bitmap structure (it generally is 256). */ /* */ /* FT_PIXEL_MODE_GRAY2 :: */ /* A 2-bit/pixel bitmap, used to represent embedded anti-aliased */ /* bitmaps in font files according to the OpenType specification. */ /* We haven't found a single font using this format, however. */ /* */ /* FT_PIXEL_MODE_GRAY4 :: */ /* A 4-bit/pixel bitmap, used to represent embedded anti-aliased */ /* bitmaps in font files according to the OpenType specification. */ /* We haven't found a single font using this format, however. */ /* */ /* FT_PIXEL_MODE_LCD :: */ /* An 8-bit bitmap, used to represent RGB or BGR decimated glyph */ /* images used for display on LCD displays; the bitmap's width is */ /* three times wider than the original glyph image. See also */ /* @FT_RENDER_MODE_LCD. */ /* */ /* FT_PIXEL_MODE_LCD_V :: */ /* An 8-bit bitmap, used to represent RGB or BGR decimated glyph */ /* images used for display on rotated LCD displays; the bitmap's */ /* height is three times taller than the original glyph image. */ /* See also @FT_RENDER_MODE_LCD_V. */ /* */ typedef enum FT_Pixel_Mode_ { FT_PIXEL_MODE_NONE = 0, FT_PIXEL_MODE_MONO, FT_PIXEL_MODE_GRAY, FT_PIXEL_MODE_GRAY2, FT_PIXEL_MODE_GRAY4, FT_PIXEL_MODE_LCD, FT_PIXEL_MODE_LCD_V, FT_PIXEL_MODE_MAX /* do not remove */ } FT_Pixel_Mode; /*************************************************************************/ /* */ /* <Enum> */ /* ft_pixel_mode_xxx */ /* */ /* <Description> */ /* A list of deprecated constants. Use the corresponding */ /* @FT_Pixel_Mode values instead. */ /* */ /* <Values> */ /* ft_pixel_mode_none :: see @FT_PIXEL_MODE_NONE */ /* ft_pixel_mode_mono :: see @FT_PIXEL_MODE_MONO */ /* ft_pixel_mode_grays :: see @FT_PIXEL_MODE_GRAY */ /* ft_pixel_mode_pal2 :: see @FT_PIXEL_MODE_GRAY2 */ /* ft_pixel_mode_pal4 :: see @FT_PIXEL_MODE_GRAY4 */ /* */ #define ft_pixel_mode_none FT_PIXEL_MODE_NONE #define ft_pixel_mode_mono FT_PIXEL_MODE_MONO #define ft_pixel_mode_grays FT_PIXEL_MODE_GRAY #define ft_pixel_mode_pal2 FT_PIXEL_MODE_GRAY2 #define ft_pixel_mode_pal4 FT_PIXEL_MODE_GRAY4 /* */ #if 0 /*************************************************************************/ /* */ /* <Enum> */ /* FT_Palette_Mode */ /* */ /* <Description> */ /* THIS TYPE IS DEPRECATED. DO NOT USE IT! */ /* */ /* An enumeration type used to describe the format of a bitmap */ /* palette, used with ft_pixel_mode_pal4 and ft_pixel_mode_pal8. */ /* */ /* <Fields> */ /* ft_palette_mode_rgb :: The palette is an array of 3-bytes RGB */ /* records. */ /* */ /* ft_palette_mode_rgba :: The palette is an array of 4-bytes RGBA */ /* records. */ /* */ /* <Note> */ /* As ft_pixel_mode_pal2, pal4 and pal8 are currently unused by */ /* FreeType, these types are not handled by the library itself. */ /* */ typedef enum FT_Palette_Mode_ { ft_palette_mode_rgb = 0, ft_palette_mode_rgba, ft_palettte_mode_max /* do not remove */ } FT_Palette_Mode; /* */ #endif /*************************************************************************/ /* */ /* <Struct> */ /* FT_Bitmap */ /* */ /* <Description> */ /* A structure used to describe a bitmap or pixmap to the raster. */ /* Note that we now manage pixmaps of various depths through the */ /* `pixel_mode' field. */ /* */ /* <Fields> */ /* rows :: The number of bitmap rows. */ /* */ /* width :: The number of pixels in bitmap row. */ /* */ /* pitch :: The pitch's absolute value is the number of bytes */ /* taken by one bitmap row, including padding. */ /* However, the pitch is positive when the bitmap has */ /* a `down' flow, and negative when it has an `up' */ /* flow. In all cases, the pitch is an offset to add */ /* to a bitmap pointer in order to go down one row. */ /* */ /* buffer :: A typeless pointer to the bitmap buffer. This */ /* value should be aligned on 32-bit boundaries in */ /* most cases. */ /* */ /* num_grays :: This field is only used with */ /* `FT_PIXEL_MODE_GRAY'; it gives the number of gray */ /* levels used in the bitmap. */ /* */ /* pixel_mode :: The pixel_mode, i.e., how pixel bits are stored. */ /* */ /* palette_mode :: This field is only used with paletted pixel modes; */ /* it indicates how the palette is stored. */ /* */ /* palette :: A typeless pointer to the bitmap palette; only */ /* used for paletted pixel modes. */ /* */ /* <Note> */ /* For now, the only pixel mode supported by FreeType are mono and */ /* grays. However, drivers might be added in the future to support */ /* more `colorful' options. */ /* */ /* When using pixel modes pal2, pal4 and pal8 with a void `palette' */ /* field, a gray pixmap with respectively 4, 16, and 256 levels of */ /* gray is assumed. This, in order to be compatible with some */ /* embedded bitmap formats defined in the TrueType specification. */ /* */ /* Note that no font was found presenting such embedded bitmaps, so */ /* this is currently completely unhandled by the library. */ /* */ typedef struct FT_Bitmap_ { int rows; int width; int pitch; unsigned char* buffer; short num_grays; char pixel_mode; char palette_mode; void* palette; } FT_Bitmap; /*************************************************************************/ /* */ /* <Section> */ /* outline_processing */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* <Struct> */ /* FT_Outline */ /* */ /* <Description> */ /* This structure is used to describe an outline to the scan-line */ /* converter. */ /* */ /* <Fields> */ /* n_contours :: The number of contours in the outline. */ /* */ /* n_points :: The number of points in the outline. */ /* */ /* points :: A pointer to an array of `n_points' FT_Vector */ /* elements, giving the outline's point coordinates. */ /* */ /* tags :: A pointer to an array of `n_points' chars, giving */ /* each outline point's type. If bit 0 is unset, the */ /* point is `off' the curve, i.e. a Bezier control */ /* point, while it is `on' when set. */ /* */ /* Bit 1 is meaningful for `off' points only. If set, */ /* it indicates a third-order Bezier arc control point; */ /* and a second-order control point if unset. */ /* */ /* contours :: An array of `n_contours' shorts, giving the end */ /* point of each contour within the outline. For */ /* example, the first contour is defined by the points */ /* `0' to `contours[0]', the second one is defined by */ /* the points `contours[0]+1' to `contours[1]', etc. */ /* */ /* flags :: A set of bit flags used to characterize the outline */ /* and give hints to the scan-converter and hinter on */ /* how to convert/grid-fit it. See FT_Outline_Flags. */ /* */ typedef struct FT_Outline_ { short n_contours; /* number of contours in glyph */ short n_points; /* number of points in the glyph */ FT_Vector* points; /* the outline's points */ char* tags; /* the points flags */ short* contours; /* the contour end points */ int flags; /* outline masks */ } FT_Outline; /*************************************************************************/ /* */ /* <Enum> */ /* FT_Outline_Flags */ /* */ /* <Description> */ /* A simple type used to enumerates the flags in an outline's */ /* `outline_flags' field. */ /* */ /* <Values> */ /* FT_OUTLINE_NONE :: Value 0 is reserved. */ /* */ /* FT_OUTLINE_OWNER :: If set, this flag indicates that the */ /* outline's field arrays (i.e. */ /* `points', `flags' & `contours') are */ /* `owned' by the outline object, and */ /* should thus be freed when it is */ /* destroyed. */ /* */ /* FT_OUTLINE_EVEN_ODD_FILL :: By default, outlines are filled using */ /* the non-zero winding rule. If set to */ /* 1, the outline will be filled using */ /* the even-odd fill rule (only works */ /* with the smooth raster). */ /* */ /* FT_OUTLINE_REVERSE_FILL :: By default, outside contours of an */ /* outline are oriented in clock-wise */ /* direction, as defined in the TrueType */ /* specification. This flag is set if */ /* the outline uses the opposite */ /* direction (typically for Type 1 */ /* fonts). This flag is ignored by the */ /* scan-converter. However, it is very */ /* important for the auto-hinter. */ /* */ /* FT_OUTLINE_IGNORE_DROPOUTS :: By default, the scan converter will */ /* try to detect drop-outs in an outline */ /* and correct the glyph bitmap to */ /* ensure consistent shape continuity. */ /* If set, this flag hints the scan-line */ /* converter to ignore such cases. */ /* */ /* FT_OUTLINE_HIGH_PRECISION :: This flag indicates that the */ /* scan-line converter should try to */ /* convert this outline to bitmaps with */ /* the highest possible quality. It is */ /* typically set for small character */ /* sizes. Note that this is only a */ /* hint, that might be completely */ /* ignored by a given scan-converter. */ /* */ /* FT_OUTLINE_SINGLE_PASS :: This flag is set to force a given */ /* scan-converter to only use a single */ /* pass over the outline to render a */ /* bitmap glyph image. Normally, it is */ /* set for very large character sizes. */ /* It is only a hint, that might be */ /* completely ignored by a given */ /* scan-converter. */ /* */ typedef enum FT_Outline_Flags_ { FT_OUTLINE_NONE = 0, FT_OUTLINE_OWNER = 1, FT_OUTLINE_EVEN_ODD_FILL = 2, FT_OUTLINE_REVERSE_FILL = 4, FT_OUTLINE_IGNORE_DROPOUTS = 8, FT_OUTLINE_HIGH_PRECISION = 256, FT_OUTLINE_SINGLE_PASS = 512 } FT_Outline_Flags; /************************************************************************* * * @enum: * ft_outline_xxx * * @description: * These constants are deprecated. Please use the corresponding * @FT_OUTLINE_XXX values. * * @values: * ft_outline_none :: See @FT_OUTLINE_NONE. * ft_outline_owner :: See @FT_OUTLINE_OWNER. * ft_outline_even_odd_fill :: See @FT_OUTLINE_EVEN_ODD_FILL. * ft_outline_reverse_fill :: See @FT_OUTLINE_REVERSE_FILL. * ft_outline_ignore_dropouts :: See @FT_OUTLINE_IGNORE_DROPOUTS. * ft_outline_high_precision :: See @FT_OUTLINE_HIGH_PRECISION. * ft_outline_single_pass :: See @FT_OUTLINE_SINGLE_PASS. */ #define ft_outline_none FT_OUTLINE_NONE #define ft_outline_owner FT_OUTLINE_OWNER #define ft_outline_even_odd_fill FT_OUTLINE_EVEN_ODD_FILL #define ft_outline_reverse_fill FT_OUTLINE_REVERSE_FILL #define ft_outline_ignore_dropouts FT_OUTLINE_IGNORE_DROPOUTS #define ft_outline_high_precision FT_OUTLINE_HIGH_PRECISION #define ft_outline_single_pass FT_OUTLINE_SINGLE_PASS /* */ #define FT_CURVE_TAG( flag ) ( flag & 3 ) #define FT_CURVE_TAG_ON 1 #define FT_CURVE_TAG_CONIC 0 #define FT_CURVE_TAG_CUBIC 2 #define FT_CURVE_TAG_TOUCH_X 8 /* reserved for the TrueType hinter */ #define FT_CURVE_TAG_TOUCH_Y 16 /* reserved for the TrueType hinter */ #define FT_CURVE_TAG_TOUCH_BOTH ( FT_CURVE_TAG_TOUCH_X | \ FT_CURVE_TAG_TOUCH_Y ) #define FT_Curve_Tag_On FT_CURVE_TAG_ON #define FT_Curve_Tag_Conic FT_CURVE_TAG_CONIC #define FT_Curve_Tag_Cubic FT_CURVE_TAG_CUBIC #define FT_Curve_Tag_Touch_X FT_CURVE_TAG_TOUCH_X #define FT_Curve_Tag_Touch_Y FT_CURVE_TAG_TOUCH_Y /*************************************************************************/ /* */ /* <FuncType> */ /* FT_Outline_MoveToFunc */ /* */ /* <Description> */ /* A function pointer type used to describe the signature of a `move */ /* to' function during outline walking/decomposition. */ /* */ /* A `move to' is emitted to start a new contour in an outline. */ /* */ /* <Input> */ /* to :: A pointer to the target point of the `move to'. */ /* */ /* user :: A typeless pointer which is passed from the caller of the */ /* decomposition function. */ /* */ /* <Return> */ /* Error code. 0 means success. */ /* */ typedef int (*FT_Outline_MoveToFunc)( FT_Vector* to, void* user ); #define FT_Outline_MoveTo_Func FT_Outline_MoveToFunc