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IScrollMap Interface

Defines the mapping between character positions and scrollmap coordinates.

Namespace:  Microsoft.VisualStudio.Text.Editor
Assembly:  Microsoft.VisualStudio.Text.UI (in Microsoft.VisualStudio.Text.UI.dll)

Syntax

'Declaration
Public Interface IScrollMap _
    Inherits IVerticalFractionMap
public interface IScrollMap : IVerticalFractionMap
public interface class IScrollMap : IVerticalFractionMap
type IScrollMap =  
    interface
        interface IVerticalFractionMap
    end
public interface IScrollMap extends IVerticalFractionMap

The IScrollMap type exposes the following members.

Properties

  Name Description
Public property AreElisionsExpanded Determines whether the coordinate system used by this scroll map acts as if all elisions are expanded.
Public property End Gets the scrollmap coordinate of the end of the buffer.
Public property Start Gets the scrollmap coordinate of the start of the buffer.
Public property TextView Gets the text view to which this fraction map applies. (Inherited from IVerticalFractionMap.)
Public property ThumbSize Gets the size of the text visible in the view (in scrollmap coordinates).

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Methods

  Name Description
Public method GetBufferPositionAtCoordinate Gets the buffer position that corresponds to a scrollmap coordinate.
Public method GetBufferPositionAtFraction Gets the buffer position that corresponds to a fraction of the vertical extent of the view, if it exists. (Inherited from IVerticalFractionMap.)
Public method GetCoordinateAtBufferPosition Gets the scrollmap coordinates of a buffer position.
Public method GetFractionAtBufferPosition Gets the fraction of the vertical extent of the view that corresponds to the specified buffer position. (Inherited from IVerticalFractionMap.)

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Events

  Name Description
Public event MappingChanged Occurs when the mapping has changed between a character position and its vertical fraction. For example, the view may have re-rendered some lines, changing their font size. (Inherited from IVerticalFractionMap.)

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Remarks

This coordinate system is not the same as the one in which the scrollbar is rendered.

Valid text positions range between 0 and ITextView.TextSnapshot.Length. Corresponding scrollmap coordinates range between 0.0 and CoordinateOfBufferEnd.

Not every buffer position will have a distinct scrollmap coordinate. For example, every character on the same line of text will generally have the same scrollmap coordinate. Different scrollmap coordinates may map to the same buffer position. For example, scrollmap coordinates in the range [0.0, 1.0) will generally map to the first character of the buffer.

See Also

Reference

Microsoft.VisualStudio.Text.Editor Namespace