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AspectRatioCorrection Property

Summary

Gets or sets the manual aspect ratio correction value

Syntax

Java

Objective-C

WinRT C#

public double AspectRatioCorrection {get; set;}

Public Property AspectRatioCorrection As Double

public double AspectRatioCorrection {get; set;}

@property (nonatomic, assign)           double aspectRatioCorrection

public float getAspectRatioCorrection() 
public void setAspectRatioCorrection(float aspectRatioCorrection)

  
get_AspectRatioCorrection(); 
set_AspectRatioCorrection(value); 
Object.defineProperty('AspectRatioCorrection');

Property Value

The manual aspect ratio correction value. The default value is 1.

Remarks

Changing the value of this property will fire the PropertyChanged and TransformChanged events.

When displaying images, sometimes it is necessary to set a manual aspect ratio correction to compensate for irregular screen resolution (pixel size). For example, if you display an image that is 100 by 100 pixels on most monitors, the image will not be an exact square on screen because most monitors have pixels that are rectangular in shape. Setting the AspectRatioCorrection value can fix this issue.

The AspectRatioCorrection is multiplied by the current vertical scale factor of the control CurrentYScaleFactor at all times regardless of the ScaleFactor and SizeMode values.

Example

WinRT C#

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Controls; 
 
public void AspectRatioCorrectionExample() 
{ 
   // Get the aspect ratio correction value 
   double value = _viewer.AspectRatioCorrection; 
   // Flip between 1, 2 and 0.5 
   if (value == 1) 
   { 
      _viewer.AspectRatioCorrection = 2; 
      _infoLabel.Text = "Aspect ratio is set to 2. The image is displayed with twice the original height"; 
   } 
   else if (value == 2) 
   { 
      _viewer.AspectRatioCorrection = 0.5; 
      _infoLabel.Text = "Aspect ratio is set to 0.5. The image is displayed with half the original height"; 
   } 
   else 
   { 
      _viewer.AspectRatioCorrection = 1; 
      _infoLabel.Text = "Aspect ratio is set back to 1. The image is displayed with original height"; 
   } 
}

Requirements

Target Platforms

Reference

ImageViewer Class

ImageViewer Members

Help Version 19.0.2017.10.28

Leadtools.Controls Assembly (WinRT / WPF / iOS / OS X / Android)

Introduction

Getting Started

Namespaces

Leadtools.Controls Namespace