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ConvertToImageOptions Enumeration

Summary

Options for converting a LEADTOOLS RasterImage object into a WinRT Windows.UI.Xaml.Media.ImageSource.

Syntax

C#
VB
Objective-C
WinRT C#
C++
[FlagsAttribute()] 
public enum ConvertToImageOptions   
<FlagsAttribute()> 
Public Enum ConvertToImageOptions  
    
    
[FlagsAttribute()] 
public enum ConvertToImageOptions    
typedef NS_OPTIONS(NSUInteger, LTConvertToImageOptions) 
Leadtools.Converters.ConvertToImageOptions = function() { }; 
Leadtools.Converters.ConvertToImageOptions.prototype = {<br/> 
  LeadtoolsMemberMarker(replace me) 
 }; 
[FlagsAttribute()] 
public enum class ConvertToImageOptions

Members

ValueMemberDescription
0NoneDefault
1KeepAlphaValues

If the source RasterImage is 32 or 64-bits/pixel, then use the alpha values from this alpha when the result of the conversion is also a 32 or 64-bits/pixel Windows.UI.Xaml.Media.ImageSource.

If this flag is not specified, the resulting Windows.UI.Xaml.Media.ImageSource will always have an alpha value of all 1's (255 for 32-bit images or 65535 for 64-bit images) regardless of the alpha values in the source RasterImage. This can be useful when converting some 32-bit images that may have 0 for the alpha (such as BMP files) which translates into an Windows.UI.Xaml.Media.ImageSource that is completely transparent.

If this flag is specified, then the source image alpha values will be used as is.

2KeepViewPerspective Keep the original RasterImage view perspective. RasterImage objects support having an image data orientation other than the normal top-left orientation by using the RasterImage.ViewPerspective property.If the source RasterImage has a view-perspective other than RasterViewPerspective.TopLeft and this flag is specified, then the resulting Windows.UI.Xaml.Media.ImageSource can be flipped, reversed or rotated. For example, if the source view-perspective is RasterViewPerspective.BottomLeft and this flag is specified in the conversion options, then the resulting Windows.UI.Xaml.Media.ImageSource will be flipped.If this flag is not specified, then the conversion can flip, reverse or rotate the image data as needed to provide the correct (top-left) orientation for the Windows.UI.Xaml.Media.ImageSource.
4IgnoreLowHighBitsOnGrayImages Do not use the grayscale bit window values when converting 12 or 16-bit grayscale RasterImage objects. The RasterImage object contains the RasterImage.LowBit and RasterImage.HighBit values that can be set to provide a Window into the image data. This is mostly used by medical applications during a window-leveling operation.If this flag is specified, the RasterImage.LowBit and RasterImage.HighBit values are ignored and all of the image data is used when converting the RasterImage into a Windows.UI.Xaml.Media.ImageSource.If this flag is not specified, then only the image data between the RasterImage.LowBit and the RasterImage.HighBit is used.
8UseSetSource Not Supported in WinRT.
16AutoDetectAlpha Not supported in WinRT.
100000LinkImageUses the data from the source's native image object without making a copy.

In WinRT, this links the RasterImage to a WriteableBitmap.

Remarks

This enumeration is used to specify the options for converting LEADTOOLS RasterImage objects to WinRT Windows.UI.Xaml.Media.ImageSource components through the RasterImageConverter.ConvertToImageSource method.

For more information refer to RasterImage and WinRT.

Requirements

Target Platforms

See Also

Reference

Leadtools.Converters Namespace

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