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RadDiagram - set milimeters as unit of measurement

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Adam
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Adam asked on 25 Oct 2016, 01:49 PM

Hello,

 

Currently, RadDiagram uses pixels as the unit of measurement. I have been working on a solution, which requires millimeters as the unit of measurement.

I know I can change RadRuler measurement unit to centimeter (http://www.telerik.com/forums/ruler-that-displays-units-in-inches-mm), but this change only display value on ruler. I need support in the RadDiagram - grid lines in mm, snap to milimeters (not pixels) and page size in mm. How I can add support to milimeters unit?

 

Thanks you
Adam

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Petar Mladenov
Telerik team
answered on 28 Oct 2016, 12:18 PM
Hello Adam,

Currently the BackgroundGrid and the DiagramRuler's MeasurementUnit are not directly connected. We understand your requirement and that is why we logged it in our portal as a new feature request.

What you can do on your side is to set the BackgroundGrid's cell size and all other elements via manual calculations. Here is a part of an internal code that you can use:

private const double DipsInInch = 96d;
        private const double CmsInInch = 2.54d;
 
        /// <summary>
        /// Converts inches to DIPs (Device Independent Pixel).
        /// </summary>
        /// <param name="inch">An inch value.</param>
        /// <returns>A Dip value.</returns>
        internal static double InchToDip(double inch)
        {
            return inch * DipsInInch;
        }
 
        /// <summary>
        /// Converts DIPs (Device Independent Pixel) to inches.
        /// </summary>
        /// <param name="dip">An inch value.</param>
        /// <returns>A Dip value.</returns>
        internal static double DipToInch(double dip)
        {
            return dip / DipsInInch;
        }
 
        /// <summary>
        /// Converts centimeters to DIPs (Device Independent Pixel).
        /// </summary>
        /// <param name="cm">A centimeter value.</param>
        /// <returns>A Dip value.</returns>
        internal static double CmToDip(double cm)
        {
            return (cm / CmsInInch) * DipsInInch;
        }
 
        /// <summary>
        /// Converts DIPs (Device Independent Pixel) to centimeters.
        /// </summary>
        /// <param name="dip">A Dip value.</param>
        /// <returns>A centimeter value.</returns>
        internal static double DipToCm(double dip)
        {
            return (dip / DipsInInch) * CmsInInch;
        }


Regards,
Petar Mladenov
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Petar Mladenov
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