Font library

Data Structures
struct	FontxFile

Typedefs
typedef struct _IO_FILE	FILE

Functions
void	AaddFontx (FontxFile *fx, const char *path)
void	InitFontx (FontxFile *fxs, const char *f0, const char *f1)
bool	OpenFontx (FontxFile *fx)
void	CloseFontx (FontxFile *fx)
void	DumpFontx (FontxFile *fxs)
uint8_t	GetFontWidth (FontxFile *fx)
uint8_t	GetFontHeight (FontxFile *fx)
bool	GetFontx (FontxFile *fxs, uint8_t ascii, uint8_t *pGlyph, uint8_t *pw, uint8_t *ph)
void	Font2Bitmap (uint8_t *fonts, uint8_t *line, uint8_t w, uint8_t h, uint8_t inverse)
void	UnderlineBitmap (uint8_t *line, uint8_t w, uint8_t h)
void	ReversBitmap (uint8_t *line, uint8_t w, uint8_t h)
void	ShowFont (uint8_t *fonts, uint8_t pw, uint8_t ph)
void	ShowBitmap (uint8_t *bitmap, uint8_t pw, uint8_t ph)
uint8_t	RotateByte (uint8_t ch)

Detailed Description

Do not use. Low-level library to work with bitmap fonts on the display.

It provides functionality for loading and manipulating font files, rendering fonts and bitmaps to the screen, and performing various transformations on bitmaps. The library also includes a struct, FontxFile, which represents a font file and contains metadata about the font.

This is an internal library and should not be directly used.

Typedef Documentation

FILE

typedef struct _IO_FILE FILE

Definition at line 23 of file fontx.h.

Function Documentation

AaddFontx()

void AaddFontx	(	FontxFile *	fx,
		const char *	path
	)

Adds a font file to the given FontxFile structure.

Parameters

fx	Pointer to the FontxFile structure
path	Path to the font file

Definition at line 2 of file fontx.c.

CloseFontx()

void CloseFontx

(

FontxFile *

fx

)

Closes the font file.

Parameters

fx	Pointer to the FontxFile structure

Definition at line 5 of file fontx.c.

DumpFontx()

void DumpFontx

(

FontxFile *

fxs

)

Dumps the font data stored in the FontxFile structure.

Parameters

fxs	Pointer to the FontxFile structure

Definition at line 6 of file fontx.c.

Font2Bitmap()

void Font2Bitmap	(	uint8_t *	fonts,
		uint8_t *	line,
		uint8_t	w,
		uint8_t	h,
		uint8_t	inverse
	)

Converts a font data buffer into a bitmap.

Parameters

fonts	Pointer to the font data buffer
line	Pointer to the bitmap buffer
w	Width of the bitmap in pixels
h	Height of the bitmap in pixels
inverse	If true, the bitmap will be inverted

Definition at line 135 of file fontx.c.

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GetFontHeight()

uint8_t GetFontHeight

(

FontxFile *

fx

)

Gets the height of a character in the font.

Parameters

fx	Pointer to the FontxFile structure

Returns

The height of a character in pixels

Definition at line 8 of file fontx.c.

GetFontWidth()

uint8_t GetFontWidth

(

FontxFile *

fx

)

Gets the width of a character in the font.

Parameters

fx	Pointer to the FontxFile structure

Returns

The width of a character in pixels

Definition at line 7 of file fontx.c.

GetFontx()

bool GetFontx	(	FontxFile *	fxs,
		uint8_t	ascii,
		uint8_t *	pGlyph,
		uint8_t *	pw,
		uint8_t *	ph
	)

Gets the glyph data for the specified ASCII character.

Parameters

fxs	Pointer to the FontxFile structure
ascii	ASCII value of the character to get the glyph for
pGlyph	Pointer to the buffer to store the glyph data
pw	Pointer to the variable to store the width of the glyph
ph	Pointer to the variable to store the height of the glyph

Returns

True if the glyph was found, false otherwise

Definition at line 9 of file fontx.c.

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InitFontx()

void InitFontx	(	FontxFile *	fxs,
		const char *	f0,
		const char *	f1
	)

Initializes the given FontxFile structure with the specified font files.

Parameters

fxs	Pointer to the FontxFile structure
f0	Path to the 8x16 font file
f1	Path to the 16x16 font file

Definition at line 3 of file fontx.c.

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OpenFontx()

bool OpenFontx

(

FontxFile *

fx

)

Opens the font file and reads the font data into the FontxFile structure.

Parameters

fx	Pointer to the FontxFile structure

Returns

True if the font file was opened successfully, false otherwise

Warning

The font-file path must be valid from the directory in which the executable is called, otherwise the error message "cannot get font from font file" will be thrown. Absolute paths (starting with /) are safe.

Definition at line 4 of file fontx.c.

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ReversBitmap()

void ReversBitmap	(	uint8_t *	line,
		uint8_t	w,
		uint8_t	h
	)

Reverses the bits in each byte of a bitmap.

Parameters

line	Pointer to the bitmap buffer
w	Width of the bitmap in pixels
h	Height of the bitmap in pixels

Definition at line 12 of file fontx.c.

RotateByte()

uint8_t RotateByte

(

uint8_t

ch

)

Rotates a byte by 90 degrees.

Parameters

ch	Byte to be rotated

Returns

The rotated byte

Definition at line 15 of file fontx.c.

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ShowBitmap()

void ShowBitmap	(	uint8_t *	bitmap,
		uint8_t	pw,
		uint8_t	ph
	)

Displays a bitmap on the screen.

Parameters

bitmap	Pointer to the bitmap buffer
pw	Width of the font in pixels
ph	Height of the font in pixels

Definition at line 14 of file fontx.c.

ShowFont()

void ShowFont	(	uint8_t *	fonts,
		uint8_t	pw,
		uint8_t	ph
	)

Displays a font on the screen.

Parameters

fonts	Pointer to the font buffer
pw	Width of the font in pixels
ph	Height of the font in pixels

Definition at line 13 of file fontx.c.

UnderlineBitmap()

void UnderlineBitmap	(	uint8_t *	line,
		uint8_t	w,
		uint8_t	h
	)

Adds an underline to a bitmap.

Parameters

line	Pointer to the bitmap buffer
w	Width of the bitmap in pixels
h	Height of the bitmap in pixels

Definition at line 11 of file fontx.c.