ListBoxStyler Class Reference

#include <Pt/Forms/ListBoxStyler.h>

Binds a list box to the current style renderer. More...

Inherits Styler.

Public Member Functions
	ListBoxStyler ()
	Constructs an unbound list box styler.
const Gfx::Brush &	background () const
	Returns the effective list box background brush.
void	setBackground (const Gfx::Brush &brush)
	Sets the widget-local list box background brush to brush.
const Gfx::Pen &	contour () const
	Returns the effective list box contour pen.
void	setContour (const Gfx::Pen &pen)
	Sets the widget-local list box contour pen to pen.
Gfx::SizeF	measureFrame (PaintSurface &surface, const Gfx::SizeF &contentSize) const
	Measures the frame enclosing contentSize.
Gfx::RectF	layoutFrame (PaintSurface &surface, const Gfx::RectF &frameRect) const
	Returns the frame content rectangle within frameRect.
void	renderBackground (PaintContext &context, const Gfx::RectF &rect, const ListBoxState &state) const
	Renders the list box background within rect for state.
void	renderChrome (PaintContext &context, const Gfx::RectF &rect, const ListBoxState &state) const
	Renders the list box chrome within rect for state.
void	setRenderer (ListBoxRenderer *renderer=0)
	Assigns a specific list box renderer.
bool	bind (const Style &style, const StyleOptions &styleOptions)
	Binds this styler to style and styleOptions.
bool	isBound () const
	Returns true if a renderer is bound.

Protected Member Functions
virtual StyleOptions &	onBindOptions (const StyleOptions &global)
	Binds the overlay to global and returns it.
virtual Renderer *	onStyleRenderer (const Style &style)
	Returns the shared list-box renderer from style, or 0.
virtual Renderer *	onCreateRenderer (const Style &style)
	Creates an independent clone of the style renderer, or 0.
void	init (Renderer *renderer)
	Replaces the bound renderer with renderer.

Detailed Description

A ListBox owns a ListBoxStyler. Applications do not construct one. Call Styler::bind() from onInvalidate(). When the overlay has no local options, bind uses the shared renderer from the style. Local options use a private clone. setRenderer() keeps an assigned renderer until it is cleared. A null renderer falls back on the next bind.

Appearance getters return effective tokens after bind. Setters write widget-local options. Measure, layout, and paint call the typed methods on this styler, not a public renderer accessor.

Member Function Documentation

setRenderer()

void setRenderer

(

ListBoxRenderer *

renderer = 0

)

A null renderer falls back to the current style on the next bind.

bind()

bool bind ( const Style & style, const StyleOptions & styleOptions )

inherited

Returns true when the effective renderer or the effective options changed.

init()

void init ( Renderer * renderer )

protectedinherited

A non-null renderer is a custom renderer. bind() keeps it until init() is called with 0, which falls back to the current style.