RenderHitTest Method

Summary

Queries the specified location to determine if a test point is over the thumb using the specified mapper.

Syntax

Objective-C

C++

Java

public virtual bool RenderHitTest( 
   LeadPointD location, 
   LeadPointD testPoint, 
   double hitTestBuffer, 
   AnnContainerMapper mapper 
)

Public Overridable Function RenderHitTest( _ 
   ByVal location As LeadPointD, _ 
   ByVal testPoint As LeadPointD, _ 
   ByVal hitTestBuffer As Double, _ 
   ByVal mapper As AnnContainerMapper _ 
) As Boolean

- (BOOL)rendererHitTestPoint:(LeadPointD)location 
                   testPoint:(LeadPointD)testPoint 
                      buffer:(double)buffer 
                      mapper:(LTAnnContainerMapper *)mapper

public boolean renderHitTest(LeadPointD location, 
                             LeadPointD testPoint, 
                             double hitTestBuffer, 
                             AnnContainerMapper mapper)

public:  
   virtual bool RenderHitTest( 
      LeadPointD^ location, 
      LeadPointD^ testPoint, 
      double hitTestBuffer, 
      AnnContainerMapper^ mapper 
   )

Parameters

location
The location of the thumb to test in container coordinates.

testPoint
The point to test in container coordinates.

hitTestBuffer
The hit test buffer is used to make the test point "bigger" to compensate for errors and provide smoother hit-testing. For example, if the buffer value is 2, a square with a length of 4 units around the test point will be used to perform the hit-testing. This value is in container coordinates.

mapper
The mapper object to use for converting coordinates. This cannot be null.

Return Value

true if the specified test point is over the thumb; otherwise, it is false.

Remarks

The automation framework will call RenderHitTest repeatedly to determine if a user input location is over a thumb. For example, to determine if the framework should start dragging a side of a selected object or to start rotating it.

Requirements

Target Platforms

Reference

AnnThumbStyle Class

AnnThumbStyle Members

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Help Version 20.0.2020.3.31

Leadtools.Annotations.Rendering.WinForms Assembly

Introduction

Getting Started

Namespaces

Leadtools.Annotations.Rendering Namespace

Assemblies