esve::ui::base::Display Class Reference

An area for drawing. More...

#include <esve/ui/base/Display.hxx>

Inheritance diagram for esve::ui::base::Display:

List of all members.

Public Member Functions
virtual void	reinitialize ()=0
	Call send_draw_initialize() on the next draw cycle.
virtual message::Compute_Sender &	peek_compute_sender ()=0
	Peek at the compute() message sender.
virtual message::Draw_Sender &	peek_draw_sender ()=0
	Peek at the draw() message sender.
virtual const ui::base::Display_Details &	peek_display_details () const =0
	Peek at the display details.
virtual ui::base::Display_Details &	peek_display_details ()=0
	Peek at the display details.
virtual Catch_Function	catch_function () const =0
	Catch exceptions from system entry points.
virtual void	catch_function (Catch_Function)=0
	Catch exceptions from system entry points.
virtual void	add_handler (kernel::Handler &)=0
	Child handlers.
virtual void	remove_handler (kernel::Handler &)=0
	Child handlers.
virtual void	remove_all_handlers ()=0
	Child handlers.
Protected Member Functions
virtual void	update ()=0
	Receive the update() message.
virtual void	update (double dt)=0
	Receive the update() message.

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Detailed Description

An area for drawing.

A Display holds message::Draw_Receiver objects, passing draw() messages to them when the system deems appropriate. The user should not initiate a draw() message.

Display is an Emitter --- a source of handle_*() messages which are sent to its child Handlers.

Display is also a Compute_Sender. The compute() message is sent to its compute()-children immediately before the draw() message is sent. (See message::Compute_Receiver.)

Display is also a leaf in the update() tree; the update() message marks the display as needing to be redrawn.

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