topic Re: Get the Image out from ISymbol using ArcObjects Java in ArcObjects SDK Questions

Get the Image out from ISymbol using ArcObjects Java

Ranga_Tolapi — Sat, 03 Mar 2018 02:37:22 GMT

Can someone help me please for the relevant Java code of the below C# function.

I am having trouble to pass the first argument i.e. “hDC” for ISymbol.setupDC method. For variable “g”, I am using Java “java.awt.Graphics2D” class as an equivalent of C# “System.Drawing.Graphics”.

private static Image PointSymbolToImage(ISymbol symbol, Size imageSize) {
double x = (imageSize.Width / 2);
double y = ((imageSize.Height - 1) / 2);

IPoint point = new PointClass();
point.PutCoords(x, y);

Bitmap bmp = new Bitmap(imageSize.Width, imageSize.Height);
Graphics g = Graphics.FromImage(bmp);

        symbol.SetupDC(g.GetHdc().ToInt32(), null);
        try {
            symbol.Draw(point);
        }
        catch (System.Exception ) {

}
symbol.ResetDC();

g.Dispose();

return (Image) bmp;
}

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Re: Get the Image out from ISymbol using ArcObjects Java

KwasiAsante1 — Wed, 21 Mar 2018 18:20:02 GMT

Hi Ranga,

you can obtain the hDC from the active viewer of whatever control (MapControl or GlobeControl) you are working with

For MapControl:

IMapControl.getActiveView.getScreenDisplay.geHDC

For GlobeControl:

IGlobeControl.getGlobeDisplay.getActiveViewer.getHDC

Re: Get the Image out from ISymbol using ArcObjects Java

Ranga_Tolapi — Thu, 22 Mar 2018 02:26:54 GMT

Hi Kwasi,

Thanks for your response.

My application has no UI, it's a back end batch job, which should generate the images from ISymbol and save them to the disk.