Class Reference for OpenCAGE
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Package OpenCAGE.Zoom_Tables.Simple_Zoom_Tables

Class `Simple_Zoom_Table`

extends OpenCAGE.Zoom_Tables.Zoom_Table

This is a very simple implementation of the zoom tables which basicly stores one zoom value which can be increased and decreased.

private Glib.Gfloat Global_Zoom: the zoom level
private OpenCAGE.Zoom_Tables.Zoom_Observer_List.List Observers: the list of observers

public Graphics.Points.Point Get_Zoomed_Point( Graphics.Points.Point My_Point);: returns a point corrected by the zoom level [This description is adopted from 'OpenCAGE.Zoom_Tables.Zoom_Table'.]
public Glib.Gfloat Get_Zoom( OpenCAGE.GIF.Node_Model Node);: returns the zoom level for a Node_Display [This description is adopted from 'OpenCAGE.Zoom_Tables.Zoom_Table'.]
public Glib.Gfloat Get_Zoom( OpenCAGE.GIF.Edge_Model Edge);: returns the zoom level for a Node_Display [This description is adopted from 'OpenCAGE.Zoom_Tables.Zoom_Table'.]
public Zoom_In(void);: increases the zoom level [This description is adopted from 'OpenCAGE.Zoom_Tables.Zoom_Table'.]
public Zoom_Out(void);: decreases the zoom level [This description is adopted from 'OpenCAGE.Zoom_Tables.Zoom_Table'.]
public Graphics.Area_Sizes.Area_Size Get_Zoomed_Area( Graphics.Area_Sizes.Area_Size My_Area);: returns an area corrected by the zoom level [This description is adopted from 'OpenCAGE.Zoom_Tables.Zoom_Table'.]
public Attach( OpenCAGE.Zoom_Tables.Zoom_Observer Observer);: attaches a zoom observer to the list of observers. [This description is adopted from 'OpenCAGE.Zoom_Tables.Zoom_Table'.]
public Detach( OpenCAGE.Zoom_Tables.Zoom_Observer Observer);: detaches a zoom observer from the list of observers. [This description is adopted from 'OpenCAGE.Zoom_Tables.Zoom_Table'.]
private Notify(void);: notifies all attached observers that something changed