Font rendering interface for TinyGPU-compatible framebuffers. More...

#include <IFont.h>

Inheritance diagram for IFont< RGB_T >:

Public Member Functions
virtual	~IFont ()=default
	Destroys the font interface.

virtual void	drawText (ISurface< RGB_T > &target, int16_t x, int16_t y, const char *text, RGB_T foreground, RGB_T background, bool opaque=false, uint8_t scale=1, uint8_t spacing=1, uint8_t lineSpacing=1) const =0
	Draws a text string onto a framebuffer target.

virtual size_t	measureTextWidth (const char *text, uint8_t scale=1, uint8_t spacing=1) const =0
	Returns the width of the longest text line in pixels.

virtual size_t	measureTextHeight (const char *text, uint8_t scale=1, uint8_t lineSpacing=1) const =0
	Returns the total text height in pixels.

virtual size_t	getHeight (uint8_t scale) const =0
	Returns the scaled glyph height in pixels.

Detailed Description

template<typename RGB_T = RGB565>
class tinygpu::IFont< RGB_T >

Font rendering interface for TinyGPU-compatible framebuffers.

Template Parameters

RGB_T The pixel color type. Can be RGB565, RGB666, RGB888, etc.

Implementations render text onto an ISurface target using their own glyph storage, layout, and scaling behavior.

Constructor & Destructor Documentation

virtual ~IFont ( )

virtualdefault

Destroys the font interface.

pure virtual

Draws a text string onto a framebuffer target.

virtual size_t getHeight ( uint8_t scale ) const

pure virtual

Returns the scaled glyph height in pixels.

virtual size_t measureTextHeight	(	const char *	text,
		uint8_t	scale = `1`,
		uint8_t	lineSpacing = `1`
	)		const

pure virtual

Returns the total text height in pixels.

virtual size_t measureTextWidth	(	const char *	text,
		uint8_t	scale = `1`,
		uint8_t	spacing = `1`
	)		const

pure virtual

Returns the width of the longest text line in pixels.

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