BFont class definition, unicode_block class definition, and font-related struct and enum definitions. More...

Classes
class	BFont
	Represents a typeface including its family, style and size. More...

struct	edge_info
	The distance that a character outline is inset from its escapement boundaries. More...

struct	escapement_delta
	A struct that allows you to specify extra horizontal space to surround each character with. More...

struct	font_cache_info
	Font cache parameters. More...

struct	font_height
	The amount of vertical space surrounding a character. More...

struct	tuned_font_info
	Tuning information of fonts used to make it look better when displayed on-screen. More...

class	unicode_block
	Describes the blocks of Unicode characters supported by a font. More...

Enumerations
enum	{ B_CHAR_SPACING = 0 , B_STRING_SPACING = 1 , B_BITMAP_SPACING = 2 , B_FIXED_SPACING = 3 }

enum	{ B_DISABLE_ANTIALIASING = 0x00000001 , B_FORCE_ANTIALIASING = 0x00000002 }

enum	{ }

enum	{ B_UNICODE_UTF8 = 0 , B_ISO_8859_1 = 1 , B_ISO_8859_2 = 2 , B_ISO_8859_3 = 3 , B_ISO_8859_4 = 4 , B_ISO_8859_5 = 5 , B_ISO_8859_6 = 6 , B_ISO_8859_7 = 7 , B_ISO_8859_8 = 8 , B_ISO_8859_9 = 9 , B_ISO_8859_10 = 10 , B_MACINTOSH_ROMAN = 11 }

enum	{ B_HAS_TUNED_FONT = 0x0001 , B_IS_FIXED = 0x0002 }

enum	{ B_ITALIC_FACE = 0x0001 , B_UNDERSCORE_FACE = 0x0002 , B_NEGATIVE_FACE = 0x0004 , B_OUTLINED_FACE = 0x0008 , B_STRIKEOUT_FACE = 0x0010 , B_BOLD_FACE = 0x0020 , B_REGULAR_FACE = 0x0040 , B_CONDENSED_FACE = 0x0080 , B_LIGHT_FACE = 0x0100 , B_HEAVY_FACE = 0x0200 }

enum	font_direction { B_FONT_LEFT_TO_RIGHT = 0 , B_FONT_RIGHT_TO_LEFT = 1 }

enum	font_file_format { B_TRUETYPE_WINDOWS = 0 , B_POSTSCRIPT_TYPE1_WINDOWS = 1 }

enum	font_metric_mode { B_SCREEN_METRIC = 0 , B_PRINTING_METRIC = 1 }

Functions
int32	count_font_families (void)
	Gets the number of installed font families.

int32	count_font_styles (font_family name)
	Gets the number of styles available for a font family.

status_t	get_font_family (int32 index, font_family name, uint32 flags=NULL)
	Retrieves the family name at the specified index.

status_t	get_font_style (font_family family, int32 index, font_style name, uint16 face, uint32 *flags=NULL)
	Retrieves the family name at the specified index.

status_t	get_font_style (font_family family, int32 index, font_style name, uint32 flags=NULL)
	Retrieves the family name at the specified index.

bool	update_font_families (bool checkOnly)
	Updates the font families list.

Detailed Description

BFont class definition, unicode_block class definition, and font-related struct and enum definitions.

Enumeration Type Documentation

◆ anonymous enum

anonymous enum

Enumerator
B_CHAR_SPACING	Position each character without adjustment. Best mode for printing. Since BeOS R3
B_STRING_SPACING	Optimizes the position of each character within its space. Collisions are unlikely but characters may touch each other. Best mode to use when the screen needs to match what appears on the printed page. Since BeOS R3
B_BITMAP_SPACING	The widths of the characters are chosen so that they never collide and rarely touch. Best mode for drawing small amounts of text. Since BeOS R3
B_FIXED_SPACING	Positions characters at a constant width. Best mode for fixed-width fonts. Since BeOS R3

◆ anonymous enum

anonymous enum

Enumerator

B_DISABLE_ANTIALIASING

Disable antialiasing. Used by BFont::Flags() and BFont::SetFlags().

Since: BeOS R3

B_FORCE_ANTIALIASING

Force antialiasing. Used by BFont::Flags() and BFont::SetFlags().

Since: BeOS R3

◆ anonymous enum

anonymous enum

Enumerator
B_TRUNCATE_END	Truncate from the end of the string. Since BeOS R3
B_TRUNCATE_BEGINNING	Truncate from the beginning of the string. Since BeOS R3
B_TRUNCATE_MIDDLE	Truncate from the middle of the string. Since BeOS R3
B_TRUNCATE_SMART	Truncate while keeping each string unique. Since BeOS R3

◆ anonymous enum

anonymous enum

Enumerator
B_UNICODE_UTF8	UTF-8 font encoding. Since BeOS R3
B_ISO_8859_1	ISO 8859-1 aka Latin 1 "Western European" font encoding. Since BeOS R3
B_ISO_8859_2	ISO 8859-2 aka Latin 2 "Eastern European" font encoding. Since BeOS R3
B_ISO_8859_3	ISO 8859-3 aka Latin 3 "South European" font encoding. Since BeOS R3
B_ISO_8859_4	ISO 8859-4 aka Latin 4 "Northern European" font encoding. Since BeOS R3
B_ISO_8859_5	ISO 8859-5 "Latin/Cyrillic" font encoding. Since BeOS R3
B_ISO_8859_6	ISO 8859-6 "Latin/Arabic" font encoding. Since BeOS R3
B_ISO_8859_7	ISO 8859-7 "Latin/Greek" font encoding. Since BeOS R3
B_ISO_8859_8	ISO 8859-8 "Latin/Hebrew" font encoding. Since BeOS R3
B_ISO_8859_9	ISO 8859-9 aka Latin 5 "Latin/Turkish" font encoding. Since BeOS R3
B_ISO_8859_10	ISO 8859-10 aka Latin 6 "Nordic" font encoding. Since BeOS R3
B_MACINTOSH_ROMAN	Macintosh Roman font encoding. Since BeOS R3

◆ anonymous enum

anonymous enum

Enumerator

B_HAS_TUNED_FONT

Indicates that the font has been adjusted to look good on the screen.

Since: BeOS R4

B_IS_FIXED

Indicates that the font is non-proportional.

Since: BeOS R4

◆ anonymous enum

anonymous enum

Enumerator
B_ITALIC_FACE	Italic font face flag. Since BeOS R4
B_UNDERSCORE_FACE	Underscore font face flag. Since BeOS R4
B_NEGATIVE_FACE	Negative font face flag. Since BeOS R4
B_OUTLINED_FACE	Outline font face flag. Since BeOS R4
B_STRIKEOUT_FACE	Strikeout font face flag. Since BeOS R4
B_BOLD_FACE	Bold font face flag. Since BeOS R4
B_REGULAR_FACE	Regular font face flag. Since BeOS R4
B_CONDENSED_FACE	Condensed font face flag. Since Haiku R1
B_LIGHT_FACE	Light font face flag. Since Haiku R1
B_HEAVY_FACE	Heavy font face flag. Since Haiku R1

◆ font_direction

enum font_direction

Enumerator

B_FONT_LEFT_TO_RIGHT

Left to right.

Since: BeOS R3

B_FONT_RIGHT_TO_LEFT

Right to left.

Since: BeOS R3

◆ font_file_format

enum font_file_format

Enumerator

B_TRUETYPE_WINDOWS

TrueType™ font file format.

Since: BeOS R4

B_POSTSCRIPT_TYPE1_WINDOWS

PostScript™ Type1 font file format.

Since: BeOS R4

◆ font_metric_mode

enum font_metric_mode

Enumerator

B_SCREEN_METRIC

Screen font metric mode.

Since: BeOS R4

B_PRINTING_METRIC

Printing font metric mode.

Since: BeOS R4

Function Documentation

◆ count_font_families()

int32 count_font_families ( void )

Gets the number of installed font families.

Returns: The number of installed font families

Since: BeOS R3

◆ count_font_styles()

int32 count_font_styles ( font_family family )

Gets the number of styles available for a font family.

Returns: The number of styles available for a font family.

Since: BeOS R3

◆ get_font_family()

status_t get_font_family	(	int32	index,
		font_family *	_name,
		uint32 *	_flags = `NULL`
	)

Retrieves the family name at the specified index.

Parameters

index	Unique font identifier code.
_name	font_family String to receive the name of the family.
_flags	if non-`NULL`, the values of the flags `IS_FIXED` and `B_HAS_TUNED_FONT` are returned.

Returns: A status code, B_OK on success or an error code.

Return values

B_BAD_VALUE	_name is `NULL`.
B_ERROR	index does not correspond to a font family.

Since: BeOS R3

◆ get_font_style() [1/2]

status_t get_font_style	(	font_family	family,
		int32	index,
		font_style *	_name,
		uint16 *	_face,
		uint32 *	_flags = `NULL`
	)

Retrieves the family name at the specified index.

The face value returned by this function is not very reliable. At the same time, the value returned should be fairly reliable, returning the proper flag for 90%-99% of font names.

Parameters

family	The font family.
index	Unique font identifier code.
_name	String to receive the name of the family.
_face	recipient of font face value, such as `B_REGULAR_FACE`.
_flags	if non-`NULL`, the values of the flags `IS_FIXED` and `B_HAS_TUNED_FONT` are returned.

Returns: A status code, B_OK on success or an error code.

Return values

B_ERROR index does not correspond to a font style.

Since: BeOS R3

◆ get_font_style() [2/2]

status_t get_font_style	(	font_family	family,
		int32	index,
		font_style *	_name,
		uint32 *	_flags = `NULL`
	)

Retrieves the family name at the specified index.

Parameters

family	The font family.
index	Unique font identifier code.
_name	string to receive the name of the family.
_flags	if non-`NULL`, the values of the flags `IS_FIXED` and `B_HAS_TUNED_FONT` are returned

Returns: A status code, B_OK on success or an error code.

Return values

B_ERROR index does not correspond to a font style.

Since: BeOS R3

◆ update_font_families()

bool update_font_families ( bool checkOnly )

Updates the font families list.

Parameters

checkOnly Parameter is ignored.

Returns: true if the font list has changed, false if not.

Since: BeOS R3

Classes

Enumerations

Functions

Detailed Description

Enumeration Type Documentation

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ anonymous enum

◆ font_direction

◆ font_file_format

◆ font_metric_mode

Function Documentation

◆ count_font_families()

◆ count_font_styles()

◆ get_font_family()

◆ get_font_style() [1/2]

◆ get_font_style() [2/2]

◆ update_font_families()