cGLFont

OpenGL font. More...

Inheritance diagram for cGLFont:

Public Member Functions
tResult	Create (const cGLCanvas *pCanvas, const char *strFilename, tInt nHeight, tStyle eFontStyle)
	Creates a font based on the given parameters. More...
tResult	CleanUp ()
	Clean up the font. More...
void	Print (tInt x, tInt y, tFloat64 fAngle, const char *strFormat, va_list ArgList)
	Print a string onto the screen. More...
void	Print (tFloat32 x, tFloat32 y, tFloat64 fAngle, const char *strFormat, va_list ArgList)
	Print a string onto the screen. More...
tVoid	FlipTextHorizontally (tBool bOpposedYAxis)
	Set the text direction with or opposed the x-axis direction. More...
tVoid	TextScaleWithCoordinateSystem (tBool bScaleWithCoordinateSystem)
	Set the text to scale with the coordinatesystem. More...
tVoid	TextRotateWithCoordinateSystem (tBool bRotateWithCoordinateSystem)
	Set the text to rotate with the coordinatesystem. More...
tVoid	TextBaselineOnTop (tBool bTextBaselineOnTop)
	Set the text baseline on the top of the text. More...
Public Member Functions inherited from IFont
virtual	~IFont ()
	virtual destructor to ensure proper cleanup.
virtual tResult	Release ()=0
	Releases the font. More...
virtual tInt	GetHeight () const =0
	This function returns the height of the font in point. More...
virtual tBool	MeasureText (const tChar *str, tInt &nWidth, tInt &nHeight) const =0
	The methods returns the measurement of the text in nWidth and nHeight. More...

Static Public Member Functions
static tResult	Initialize ()
	Initialize the font. More...
static tResult	Uninitialize ()
	Uninitialize the font. More...

Protected Member Functions
tResult	BuildDisplayList (char ch, tStyle eFontStyle)
	Creates a display list for the given character. More...
void	PrintImpl (tUInt32 ui32Flags, tFloat32 x, tFloat32 y, tFloat64 fAngle, const char *strFormat, va_list ArgList)
	Internal print implementation. More...

Protected Attributes
FT_Face	m_hFace
	FreeType face.
GLuint *	m_hTextures
	Texture array.
GLuint	m_nTextureBase
	Base address of texture array.
tInt	m_nHeight
	Font height.
tInt	m_aCharWidth [256]
	Character width.

Static Protected Attributes
static constexpr tInt	m_nTextureScale = 8
	Super sampling of internal texture.

Additional Inherited Members
Public Types inherited from IFont
enum	tStyle { STYLE_Default , STYLE_Antialiased , STYLE_Mono }
	The enumeration marks the style of the font. More...

Detailed Description

OpenGL font.

Definition at line 43 of file glfont.h.

Member Function Documentation

BuildDisplayList()

tResult BuildDisplayList ( char  ch, tStyle  eFontStyle  )

protected

Creates a display list for the given character.

Parameters

ch	[in] Character for which the display list should be generated.
eFontStyle	[in] Fontstyle.

Returns

Standard result code

CleanUp()

tResult CleanUp

(

)

Clean up the font.

Returns

Standard result code

Create()

tResult Create	(	const cGLCanvas *	pCanvas,
		const char *	strFilename,
		tInt	nHeight,
		tStyle	eFontStyle
	)

Creates a font based on the given parameters.

Parameters

pCanvas	[in] The drawing canvas.
strFilename	[in] Filename of font.
nHeight	[in] Desired height for the font.
eFontStyle	[in] Fontstyle.

Returns

Standard result code

FlipTextHorizontally()

tVoid FlipTextHorizontally

(

tBool

bOpposedYAxis

)

Set the text direction with or opposed the x-axis direction.

Parameters

[in]

bOpposedYAxis

tFalse: with the x-axis direction tTrue: opposed the x-axis direction

Returns

void

Initialize()

static tResult Initialize ( )

static

Initialize the font.

Returns

Standard result code

Print() [1/2]

void Print	(	tFloat32	x,
		tFloat32	y,
		tFloat64	fAngle,
		const char *	strFormat,
		va_list	ArgList
	)

Print a string onto the screen.

Parameters

x	[in] Drawing position x coordinate (floating-point).
y	[in] Drawing position y coordinate (floating-point).
fAngle	[in] Drawing angle.
strFormat	[in] Formatted string.
ArgList	[in] Arguments for formatted string.

Print() [2/2]

void Print	(	tInt	x,
		tInt	y,
		tFloat64	fAngle,
		const char *	strFormat,
		va_list	ArgList
	)

Print a string onto the screen.

Parameters

x	[in] Drawing position x coordinate (integer).
y	[in] Drawing position y coordinate (integer).
fAngle	[in] Drawing angle.
strFormat	[in] Formatted string.
ArgList	[in] Arguments for formatted string.

PrintImpl()

void PrintImpl ( tUInt32  ui32Flags, tFloat32  x, tFloat32  y, tFloat64  fAngle, const char *  strFormat, va_list  ArgList  )

protected

Internal print implementation.

Parameters

ui32Flags	[in] Flags.
x	[in] Drawing position x coordinate (floating-point).
y	[in] Drawing position y coordinate (floating-point).
fAngle	[in] Drawing angle.
strFormat	[in] Formatted string.
ArgList	[in] Arguments for formatted string.

TextBaselineOnTop()

tVoid TextBaselineOnTop

(

tBool

bTextBaselineOnTop

)

Set the text baseline on the top of the text.

Parameters

[in]

bTextBaselineOnTop

if true = top otherwise false = bottom

Returns

void

TextRotateWithCoordinateSystem()

tVoid TextRotateWithCoordinateSystem

(

tBool

bRotateWithCoordinateSystem

)

Set the text to rotate with the coordinatesystem.

Parameters

[in]

bRotateWithCoordinateSystem

the value to be set

Returns

void

TextScaleWithCoordinateSystem()

tVoid TextScaleWithCoordinateSystem

(

tBool

bScaleWithCoordinateSystem

)

Set the text to scale with the coordinatesystem.

Parameters

[in]

bScaleWithCoordinateSystem

the value to be set

Returns

void

Uninitialize()

static tResult Uninitialize ( )

static

Uninitialize the font.

Returns

Standard result code