IlvFont Class Reference

Resource class. More...

#include <ilviews/base/resource.h>

Inheritance diagram for IlvFont:

Public Member Functions
IlvDim	ascent () const
	Gets the ascent value. More...
IlvDim	descent () const
	Gets the descent value. More...
const char *	getFamily () const
	Gets the font family name. More...
const char *	getFoundry () const
	Gets the font foundry. More...
IlvFontSize	getSize () const
	Gets the font size. More...
IlvFontStyle	getStyle () const
	Gets the font style. More...
IlvDim	height () const
	Gets the height. More...
IlBoolean	isFixed () const
	Tells you if it is a fixed-width font. More...
IlvDim	maxWidth () const
	Gets the maximum character width of a font. More...
IlvDim	minWidth () const
	Gets the minimum character width of a font. More...
virtual void	setName (const char *name)
	Sets the name of the resource. More...
void	sizes (const char *string, int length, IlvDim &w, IlvDim &h, IlvDim &d) const
	Gets font dimensions of a string. More...
IlvDim	stringHeight (const char *string, int length=-1) const
	Gets the logical height of a string. More...
IlvDim	stringWidth (const char *string, int length=-1) const
	Gets the logical width of a string. More...
Public Member Functions inherited from IlvResource
IlvDisplay *	getDisplay () const
	Gets the IlvDisplay instance. More...
const char *	getName () const
	Gets the resource name. More...
void	lock ()
	Locks the resource. More...
virtual void	unLock ()
	Unlocks the resource. More...

Friends
class	IlvSystemPort

Detailed Description

Resource class.

Library: xviews or winviews or mviews (mutually exclusive)

The IlvFont class defines a font that is used to draw strings with specific spacing values as in the following illustration:

- Font -

See also

IlvDisplay::defaultFont(), IlvDisplay::getFont(), IlvDisplay::getFontSizes().

Member Function Documentation

ascent()

IlvDim IlvFont::ascent

(

)

const

Gets the ascent value.

Retrieves the ascent spacing value of a given IlvFont object. Refer to the figure "Font" for an illustration.

Returns

The font's ascent value.

descent()

IlvDim IlvFont::descent

(

)

const

Gets the descent value.

Retrieves the descent spacing value of a given IlvFont object. Refer to the figure "Font" for an illustration. You can also get this quantity for a specific string by calling the member function sizes().

Returns

The font's descent value.

getFamily()

const char* IlvFont::getFamily

(

)

const

Gets the font family name.

Retrieves the font family of a given IlvFont object.

Returns

The font family name.

getFoundry()

const char* IlvFont::getFoundry

(

)

const

Gets the font foundry.

Retrieves the font foundry of a given IlvFont object.

Returns

The font foundry.

getSize()

IlvFontSize IlvFont::getSize

(

)

const

Gets the font size.

Retrieves the font size of a given IlvFont object.

Returns

The font size.

getStyle()

IlvFontStyle IlvFont::getStyle

(

)

const

Gets the font style.

Retrieves the font style of a given IlvFont object.

Returns

The font style.

height()

IlvDim IlvFont::height

(

)

const

Gets the height.

Retrieves the height spacing value of a given IlvFont object. You can also get this quantity for a specific string by calling the member functions stringHeight() or sizes() of the IlvFont class.

Returns

The font's height.

isFixed()

IlBoolean IlvFont::isFixed

(

)

const

Tells you if it is a fixed-width font.

Returns

IlTrue if this font object has a fixed width for all characters.

maxWidth()

IlvDim IlvFont::maxWidth

(

)

const

Gets the maximum character width of a font.

Returns

The width of the widest characters of the font.

minWidth()

IlvDim IlvFont::minWidth

(

)

const

Gets the minimum character width of a font.

Note that when both maxWidth() and minWidth() return the same value, then isFixed() returns IlTrue.

Returns

The width of the narrowest characters of the font.

setName()

virtual void IlvFont::setName ( const char *  name )

virtual

Sets the name of the resource.

Names your resource by means of a unique name string descriptor that is internally copied.

Reimplemented from IlvResource.

sizes()

void IlvFont::sizes	(	const char *	string,
		int	length,
		IlvDim &	w,
		IlvDim &	h,
		IlvDim &	d
	)		const

Gets font dimensions of a string.

This method returns logical dimensions. It does not return the precise painted rectangle but the dimensions of a box that provides minimum spacing to other graphical effects (such as a border surrounding the text). In other words, it is different from the bounding box of the ink used to draw the text.

Parameters

string	The string to be measured.
length	The length of the string, in bytes. If a negative value is provided, the length is computed using strlen().
w	Used to return the width of the string, in pixels.
h	Used to return the height of the string, in pixels.
d	Used to return the descent of the string, in pixels.

See also

IlvFont::stringHeight(), IlvFont::stringWidth()

stringHeight()

IlvDim IlvFont::stringHeight	(	const char *	string,
		int	length = -1
	)		const

Gets the logical height of a string.

Just like IlvFont::sizes(), this method returns a logical dimension. It does not return the precise height of the painted rectangle but the height of a box that provides minimum spacing to other graphical effects (such as a border surrounding the text). In other words, it is different from the height of the ink used to draw the text.

Parameters

string	The string to be measured.
length	The length of the string, in bytes. If a negative value is provided, the length is computed using strlen().

Returns

The logical height of the string, in pixels, when displayed with this font.

See also

IlvFont::sizes(), IlvFont::stringWidth()

stringWidth()

IlvDim IlvFont::stringWidth	(	const char *	string,
		int	length = -1
	)		const

Gets the logical width of a string.

Just like IlvFont::sizes(), this method returns a logical dimension. It does not return the precise width of the painted rectangle but the width of a box that provides minimum spacing to other graphical effects (such as a border surrounding the text). In other words, it is different from the width of the ink used to draw the text.

Parameters

string	The string to be measured.
length	The length of the string, in bytes. If a negative value is provided, the length is computed using strlen().

Returns

The logical width of the string, in pixels, when displayed with this font.

See also

IlvFont::sizes(), IlvFont::stringHeight()