AeonGUI::PangoTextLayout Class Reference

Pango-backed text layout implementation. More...

#include <aeongui/PangoTextLayout.hpp>

Inheritance diagram for AeonGUI::PangoTextLayout:

Collaboration diagram for AeonGUI::PangoTextLayout:

Public Member Functions
	PangoTextLayout ()
	Default constructor. Creates a layout with default font settings.
	~PangoTextLayout () override
	Destructor. Releases Pango resources.
void	SetText (const std::string &aText) override
	Set the text content to lay out.
void	SetFontFamily (const std::string &aFamily) override
	Set the font family.
void	SetFontSize (double aSize) override
	Set the font size.
void	SetFontWeight (int aWeight) override
	Set the font weight.
void	SetFontStyle (int aStyle) override
	Set the font style.
double	GetTextWidth () const override
	Get the logical width of the laid-out text.
double	GetTextHeight () const override
	Get the logical height of the laid-out text.
double	GetBaseline () const override
	Get the baseline offset from the top of the layout.
double	GetCharOffsetX (long aIndex) const override
	Get the x-offset of a character at the given byte index.
PangoLayout *	GetPangoLayout () const
	Access the underlying PangoLayout for advanced use.
Public Member Functions inherited from AeonGUI::TextLayout
virtual	~TextLayout ()=0
	Virtual destructor.

Detailed Description

Pango-backed text layout implementation.

Uses PangoLayout and PangoFontDescription to measure and layout text for rendering by a Canvas.

Member Function Documentation

GetBaseline()

double AeonGUI::PangoTextLayout::GetBaseline ( ) const

overridevirtual

Get the baseline offset from the top of the layout.

Returns

Baseline position in CSS pixels.

Implements AeonGUI::TextLayout.

GetCharOffsetX()

double AeonGUI::PangoTextLayout::GetCharOffsetX ( long aIndex ) const

overridevirtual

Get the x-offset of a character at the given byte index.

Parameters

aIndex

UTF-8 byte index.

Returns

X offset in CSS pixels.

Implements AeonGUI::TextLayout.

GetPangoLayout()

PangoLayout * AeonGUI::PangoTextLayout::GetPangoLayout

(

)

const

Access the underlying PangoLayout for advanced use.

Returns

Pointer to the PangoLayout.

GetTextHeight()

double AeonGUI::PangoTextLayout::GetTextHeight ( ) const

overridevirtual

Get the logical height of the laid-out text.

Returns

Height in CSS pixels.

Implements AeonGUI::TextLayout.

GetTextWidth()

double AeonGUI::PangoTextLayout::GetTextWidth ( ) const

overridevirtual

Get the logical width of the laid-out text.

Returns

Width in CSS pixels.

Implements AeonGUI::TextLayout.

SetFontFamily()

void AeonGUI::PangoTextLayout::SetFontFamily ( const std::string & aFamily )

overridevirtual

Set the font family.

Parameters

aFamily

Font family name (e.g. "sans-serif").

Implements AeonGUI::TextLayout.

SetFontSize()

void AeonGUI::PangoTextLayout::SetFontSize ( double aSize )

overridevirtual

Set the font size.

Parameters

aSize

Font size in CSS pixels.

Implements AeonGUI::TextLayout.

SetFontStyle()

void AeonGUI::PangoTextLayout::SetFontStyle ( int aStyle )

overridevirtual

Set the font style.

Parameters

aStyle

0 = normal, 1 = italic, 2 = oblique.

Implements AeonGUI::TextLayout.

SetFontWeight()

void AeonGUI::PangoTextLayout::SetFontWeight ( int aWeight )

overridevirtual

Set the font weight.

Parameters

aWeight

CSS font weight (400 = normal, 700 = bold).

Implements AeonGUI::TextLayout.

SetText()

void AeonGUI::PangoTextLayout::SetText ( const std::string & aText )

overridevirtual

Set the text content to lay out.

Parameters

aText

UTF-8 text string.

Implements AeonGUI::TextLayout.

---

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

• include/aeongui/PangoTextLayout.hpp
• core/PangoTextLayout.cpp