LEADTOOLS WinRT(Leadtools.Controls)
LEAD Technologies, Inc

EnableDpiCorrection Property


Gets or sets a value that indicates whether the viewer should view images with non-uniform DPI with the correct aspect ratio. WinRT support
Syntax
public bool EnableDpiCorrection {get; set;}
 get_EnableDpiCorrection();
set_EnableDpiCorrection(value);

Property Value

true if the viewer should view images with non-uniform DPI with the correct aspect ratio; otherwise, it is false. Default value is true.
Remarks

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

When you set a new image in the viewer, you can also set the image resolution (DPI) into the ImageDpiX and ImageDpiY values. Some images such as FAX documents might have different values for horizontal and vertical resolution done mainly to compress the image during transfer. For example, a FAX TIF image might have 300 as the horizontal resolution and only 150 for the vertical. This image has an aspect ratio of 2/1.

When you set these values in ImageViewer, the image will be displayed squished vertically, since the image contains half the number of scanlines in the vertical direction. Document viewers will usually compensate for that by scaling the display transformation by 2 in the Y direction to correct the aspect ratio back to 1.

When you set EnableDpiCorrection to true, the ImageViewer control will do exactly that and the image will be displayed in the correct aspect ratio.

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

See Also

Reference

ImageViewer Class
ImageViewer Members

 

 


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