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Re: Scaling an image to fit (LeadTools Raster Imaging .Net Version)

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This topic and its replies were posted before the current version of LEADTOOLS was released and may no longer be applicable.

#1 Posted : Wednesday, August 31, 2005 11:32:18 AM(UTC)

caddsman

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Posts: 14

Hello,

Is there a method exposed in your program to scale images to fit inside the viewer without having to write my own code, and if so, what is the method?


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#2 Posted : Thursday, September 1, 2005 3:10:04 AM(UTC)

michael.loux

Groups: Registered
Posts: 11

Heya,

Probably the easiest way is to use the SizeMode property:

RasterImageViewer1.SizeMode = RasterViewerSizeMode.FitWidth

"FitWidth" will fit the image to the width of the viewer. "Fit" will attempt to fit the entire image.

The alternative is to set the scale factor manually. I do this
when I want to fit an image to the viewer width. "leadViewer" is
my RasterImageViewer object.

    With leadViewer
        ' Turn off fit-to-width mode
        .SizeMode = RasterViewerSizeMode.Normal

        ' Figure the scale factor, allowing for the vertical scrollbar space
        .ScaleFactor = (.Width - 15) / .Image.Width

        ' Force a repaint & turn on refresh
        .Invalidate()
    End With

HTH!

#3 Posted : Monday, September 5, 2005 4:00:56 AM(UTC)

Bashar

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Posts: 3,022

Was thanked: 2 time(s) in 2 post(s)

Mike is right. The best way to fit an image inside the viewer is by setting the SizeMode property to Fit.

Bashar Abdulqaiyume

#4 Posted : Thursday, September 8, 2005 4:40:10 AM(UTC)

caddsman

Groups: Registered
Posts: 14

Thanks. Setting the sizemode did the trick.

Signed,

Appreciative newbe

#5 Posted : Wednesday, November 22, 2006 2:13:29 AM(UTC)

Newbie1

Groups: Registered
Posts: 1

Having set the sizemode to e.g. "FitWidth" how do I determine the effective scalefactor in order that I can display the new 'scale %' to the user?

Thanks

#6 Posted : Thursday, November 23, 2006 12:08:25 AM(UTC)

Adnan Ismail

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Posts: 3,022

Was thanked: 2 time(s) in 2 post(s)

Can you tell me what LEADTOOLS programming interface (API,
OCX, COM, C++ classes, etc.) you are using? Also, what is the programming language you are developing your application under?

#7 Posted : Thursday, May 31, 2007 11:13:17 AM(UTC)

bsuresh

Groups: Registered
Posts: 32

Hi,
I am using 15 and c#. I don't want to use sizemode other than Normal (because it doesn't support up my scalefactor values). So how can provide following options with sizemode as normal?

- Fit to width
- Fit to height
- Strech to viewer

Thanks in advance,
Suresh

#8 Posted : Sunday, June 3, 2007 12:31:51 AM(UTC)

Adnan Ismail

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Posts: 3,022

Was thanked: 2 time(s) in 2 post(s)

Suresh,

You can try and use the "RasterPaintSizeMode" to determine how to fit the image in the destination rectangle (Viwer). For more information, please see the help topic "RasterPaintSizeMode Enumeration"

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