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Normal Topic Finding the FlowChart's size (Read 4766 times)
ymoran00
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Finding the FlowChart's size
Jun 6th, 2007 at 9:22am
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I've created a FlowChart. The I've ran an AnnealLayout on it. I want to get the Chart's diemnsions, and change them if necessary. If I use getBounds - I receive Rectangle with 0 values. I assume this is because it wasn't painted yet. Is there a way to get the Chart's dimensions?

Explanation: maybe you'll have a better idea. I want the chart to have the same aspect ration as the Overview, so that the Overview will be allways filled with the chart. If there's another way to do that (besides recalculating the chart's size - much better).

Thanks,
Yoav
  
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Stoyo
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Re: Finding the FlowChart's size
Reply #1 - Jun 6th, 2007 at 10:05am
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You should call getDocBounds; perhaps getBounds is defined somewhere up in the class hierarchy. Call resizeToFitItems after running a layout to make the document area big enough to fit all items. If you leave the AnnealLayout.LayoutArea empty and set the AnnealLayout.WidthHeightRatio, the control will calculate a layout area with the said ratio. Then DocBounds should have the same ratio after you call resizeToFitItems.

I hope that helps,
Stoyan
  
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ymoran00
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Re: Finding the FlowChart's size
Reply #2 - Jun 6th, 2007 at 11:32am
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I've tried using the setWidthHeightRatio - but it doesn't seem to work. Every time I run the Anneal layout, I get a different document ratio.
  
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Stoyo
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Re: Finding the FlowChart's size
Reply #3 - Jun 6th, 2007 at 11:39am
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Ok, that would work only if there are nodes placed exactly at each side of the layout area, which is not guaranteed. You could copy the formula that sets the layout area from AnnealLayout.java and use it to set the document size as well.

Stoyan
  
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ymoran00
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Re: Finding the FlowChart's size
Reply #4 - Jun 6th, 2007 at 11:53am
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I see that you don't take into account the node size. For example, to test if node is in drawing area, you test its center.
This means that if I have box with large width and with small height, the result may be a drawing area more wide than I intended to. Is that correct?
  
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