Package OpenCAGE.GUI.Displays.Background_Displays

This package contains function and data structure to display the background of Graph Areas.

Class Background_Display

extends OpenCAGE.GUI.Displays.Object_Displays.Object_Display

This class represents the background of our Graph Window

Attributes

private OpenCAGE.GIF.Node_Model Node_Model 

Operations

public Draw( Graphics.Graphic_Component.Graphic_Component GC);

This is only a dummy function which does nothing.

public Draw_Sketch( Graphics.Graphic_Component.Graphic_Component GC);

This is only a dummy function which does nothing.

public Update_Display_Really(void);

This is only a dummy function which does nothing.

public Graphics.Points.Point Get_Position(void);

returns Points.Not_A_Point

public Take( OpenCAGE.GUI.Displays.Object_Displays.Object_Visitor Visitor);

see Visitor-Pattern

public Graphics.Area_Sizes.Area_Size Get_Size(void);

returns Area_Sizes.Zero_Area_Size

public Graphics.Area_Sizes.Area_Size Get_Half_Size(void);

returns Area_Sizes.Zero_Area_Size