C# Class LongoMatch.Drawing.Canvas

A canvas stores ICanvasObject's and draws them.

Inheritance: ICanvas

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Protected Properties

Property	Type	Description
tk	IDrawingToolkit
widget	IWidget

Public Methods

Method	Description
AddObject ( ICanvasObject co ) : void	Adds a new object to the canvas and a listener to its redraw event.
Canvas ( IWidget widget ) : System
Dispose ( ) : void
Draw ( IContext context, Area area ) : void	Draws the canvas objects the specified context and area. Object are drawn in the following order: 1) Regular objects 2) Selected objects 3) Highlithed objects
RemoveObject ( ICanvasObject co ) : void	Removes and object from the canvas.

Protected Methods

Method	Description
Begin ( IContext context ) : void	Must be called before any drawing operation is performed to apply transformation, scalling and clipping.
ClearObjects ( ) : void	Removes all the objects from the canvas.
Dispose ( bool disposing ) : void
End ( ) : void	Must be called after drawing operations to restore the context
HandleRedrawEvent ( ICanvasObject co, Area area ) : void
HandleSizeChangedEvent ( ) : void
ToUserCoords ( Point p ) : Point	Converts a point to the original position removing the applied tanslation and invering the scale.

Method Details

AddObject() public method

Adds a new object to the canvas and a listener to its redraw event.

public AddObject ( ICanvasObject co ) : void
co	ICanvasObject	The object to add.
return	void

Begin() protected method

Must be called before any drawing operation is performed to apply transformation, scalling and clipping.

protected Begin ( IContext context ) : void
context	IContext	Context to draw
return	void

Canvas() public method

public Canvas ( IWidget widget ) : System
widget	IWidget
return	System

ClearObjects() protected method

Removes all the objects from the canvas.

protected ClearObjects ( ) : void
return	void

Dispose() public method

public Dispose ( ) : void
return	void

Dispose() protected method

protected Dispose ( bool disposing ) : void
disposing	bool
return	void

Draw() public method

Draws the canvas objects the specified context and area. Object are drawn in the following order: 1) Regular objects 2) Selected objects 3) Highlithed objects

public Draw ( IContext context, Area area ) : void
context	IContext	The context where the canvas is drawn.
area	LongoMatch.Core.Common.Area	The affected area.
return	void

End() protected method

Must be called after drawing operations to restore the context

protected End ( ) : void
return	void

HandleRedrawEvent() protected method

protected HandleRedrawEvent ( ICanvasObject co, Area area ) : void
co	ICanvasObject
area	LongoMatch.Core.Common.Area
return	void

HandleSizeChangedEvent() protected method

protected HandleSizeChangedEvent ( ) : void
return	void

RemoveObject() public method

Removes and object from the canvas.

public RemoveObject ( ICanvasObject co ) : void
co	ICanvasObject	The object to remove.
return	void

ToUserCoords() protected method

Converts a point to the original position removing the applied tanslation and invering the scale.

protected ToUserCoords ( Point p ) : Point
p	Point	The point to convert.
return	Point

Property Details

tk protected_oe property

protected IDrawingToolkit tk
return	IDrawingToolkit

widget protected_oe property

protected IWidget widget
return	IWidget