OpenFontRender Class Reference

#include <OpenFontRender.h>

Classes
struct	Cursor
	Structure for handling cursor position. More...

Public Member Functions
	OpenFontRender ()
void	setUseRenderTask (bool enable)
	Set whether the rendering task should be performed independently or not.
void	setRenderTaskStackSize (unsigned int stack_size)
	Specify the stack size for independent rendering tasks.
void	setCursor (int32_t x, int32_t y)
	Set cursor positions.
int32_t	getCursorX ()
	Get current cursor x-coordinate.
int32_t	getCursorY ()
	Get current cursor y-coordinate.
void	seekCursor (int32_t delta_x, int32_t delta_y)
	Move cursor position.
void	setFontColor (uint16_t font_color)
	Specify the text color.
void	setBackgroundColor (uint16_t font_bgcolor)
	Specify the background color.
void	setFontColor (uint16_t font_color, uint16_t font_bgcolor)
	Specify the text color and background color.
void	setFontColor (uint8_t r, uint8_t g, uint8_t b)
	Specify the text color.
void	setBackgroundColor (uint8_t r, uint8_t g, uint8_t b)
	Specify the background color.
void	setFontColor (uint8_t fr, uint8_t fg, uint8_t fb, uint8_t br, uint8_t bg, uint8_t bb)
	Specify the text color and background color..
uint16_t	getFontColor ()
	Get the current text color.
uint16_t	getBackgroundColor ()
	Get the current background color.
void	setFontSize (unsigned int pixel)
	Set the font size for rendering.
unsigned int	getFontSize ()
	Get the current font size.
double	setLineSpaceRatio (double line_space_ratio)
	Adjusts the width between lines of text.
double	getLineSpaceRatio ()
	Get the current line space ratio.
void	setBackgroundFillMethod (BgFillMethod method)
	Set the background fill method.
BgFillMethod	getBackgroundFillMethod ()
	Get the current background fill method.
void	setLayout (Layout layout)
	Set the direction of text writing.
Layout	getLayout ()
	Get the current direction of text writing.
void	setAlignment (Align align)
	Set the text alignment.
Align	getAlignment ()
	Get the current text alignment.
void	setCacheSize (unsigned int max_faces, unsigned int max_sizes, unsigned long max_bytes)
	Set FreeType cache size.
FT_Error	loadFont (const unsigned char *data, size_t size, uint8_t target_face_index=0)
	Load font from memory.
FT_Error	loadFont (const char *fpath, uint8_t target_face_index=0)
	Load font from external memory.
void	unloadFont ()
	Unload font data.
uint16_t	drawHString (const char *str, int32_t x, int32_t y, uint16_t fg, uint16_t bg, Align align, Drawing drawing, FT_BBox &abbox, FT_Error &error)
	Renders text horizontally.
FT_Error	drawChar (char character, int32_t x=0, int32_t y=0, uint16_t fg=0xFFFF, uint16_t bg=0x0000, Align align=Align::Left)
	Render single character.
uint16_t	drawString (const char *str, int32_t x=0, int32_t y=0, uint16_t fg=0xFFFF, uint16_t bg=0x0000, Layout layout=Layout::Horizontal)
	Renders text.
uint16_t	cdrawString (const char *str, int32_t x=0, int32_t y=0, uint16_t fg=0xFFFF, uint16_t bg=0x0000, Layout layout=Layout::Horizontal)
	Renders text as Top-Center.
uint16_t	rdrawString (const char *str, int32_t x=0, int32_t y=0, uint16_t fg=0xFFFF, uint16_t bg=0x0000, Layout layout=Layout::Horizontal)
	Renders text as Top-Right.
uint16_t	printf (const char *fmt,...)
	Renders text with format specifier.
uint16_t	cprintf (const char *fmt,...)
	Renders text as Top-Center with format specifier.
uint16_t	rprintf (const char *fmt,...)
	Renders text as Top-Right with format specifier.
FT_BBox	calculateBoundingBoxFmt (int32_t x, int32_t y, unsigned int font_size, Align align, Layout layout, const char *fmt,...)
	Calculate text bounding box with format specifier.
FT_BBox	calculateBoundingBox (int32_t x, int32_t y, unsigned int font_size, Align align, Layout layout, const char *str)
	Calculate text bounding box.
uint32_t	getTextWidth (const char *fmt,...)
	Calculate text width.
uint32_t	getTextHeight (const char *fmt,...)
	Calculate text height.
unsigned int	calculateFitFontSizeFmt (uint32_t limit_width, uint32_t limit_height, Layout layout, const char *fmt,...)
	Calculates the maximum font size that will fit the specified format string and the specified rectangle.
unsigned int	calculateFitFontSize (uint32_t limit_width, uint32_t limit_height, Layout layout, const char *str)
	Calculates the maximum font size that will fit the specified string and the specified rectangle.
void	showFreeTypeVersion ()
	Show using FreeType version.
void	showCredit ()
	Show FreeType credit.
void	getFreeTypeVersion (char *str)
	Get using FreeType version text.
void	getCredit (char *str)
	Get using FreeType credit text.
void	setDebugLevel (uint8_t level)
	Set debug output level.
template<typename T >
void	setDrawer (T &drawer)
	Collectively set up screen control functions.
void	set_drawPixel (std::function< void(int32_t, int32_t, uint16_t)> user_func)
void	set_drawFastHLine (std::function< void(int32_t, int32_t, int32_t, uint16_t)> user_func)
void	set_startWrite (std::function< void(void)> user_func)
void	set_endWrite (std::function< void(void)> user_func)

Static Public Member Functions
template<typename T >
static void	setSerial (T &output)
	Set up serial output control functions.
static void	set_printFunc (std::function< void(const char *)> user_func)

Static Public Attributes
static const unsigned char	MAIN_VERSION = 2
	Open Font Render library main version.
static const unsigned char	MINOR_VERSION = 0
	Open Font Render library minor version.
static const unsigned char	CACHE_SIZE_NO_LIMIT = 0
	FreeType cache size alias.
static const unsigned char	CACHE_SIZE_MINIMUM = 1
	FreeType cache size alias.
static const unsigned char	FT_VERSION_STRING_SIZE = 32
	Minimum string length for FreeType version.
static const unsigned char	CREDIT_STRING_SIZE = 128
	Minimum string length for FreeType credit.

Constructor & Destructor Documentation

OpenFontRender()

OpenFontRender::OpenFontRender

(

)

Member Function Documentation

set_drawFastHLine()

void OpenFontRender::set_drawFastHLine

(

std::function< void(int32_t, int32_t, int32_t, uint16_t)>

user_func

)

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set_drawPixel()

void OpenFontRender::set_drawPixel

(

std::function< void(int32_t, int32_t, uint16_t)>

user_func

)

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set_endWrite()

void OpenFontRender::set_endWrite

(

std::function< void(void)>

user_func

)

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set_printFunc()

static void OpenFontRender::set_printFunc ( std::function< void(const char *)>  user_func )

static

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set_startWrite()

void OpenFontRender::set_startWrite

(

std::function< void(void)>

user_func

)

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Member Data Documentation

CACHE_SIZE_MINIMUM

const unsigned char OpenFontRender::CACHE_SIZE_MINIMUM = 1

static

FreeType cache size alias.

CACHE_SIZE_NO_LIMIT

const unsigned char OpenFontRender::CACHE_SIZE_NO_LIMIT = 0

static

FreeType cache size alias.

CREDIT_STRING_SIZE

const unsigned char OpenFontRender::CREDIT_STRING_SIZE = 128

static

Minimum string length for FreeType credit.

FT_VERSION_STRING_SIZE

const unsigned char OpenFontRender::FT_VERSION_STRING_SIZE = 32

static

Minimum string length for FreeType version.

MAIN_VERSION

const unsigned char OpenFontRender::MAIN_VERSION = 2

static

Open Font Render library main version.

MINOR_VERSION

const unsigned char OpenFontRender::MINOR_VERSION = 0

static

Open Font Render library minor version.

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The documentation for this class was generated from the following files:

• src/OpenFontRender.h
• src/OpenFontRender.cpp