Hi Stoyan,

For ShapeNodes in our diagram we are giving some textstyle for text to trim it while it is larger than its specified text area.
When text does not fit in the node’s text area and trimming, we want to decrease font size so that it gets fit but only to an extent i.e. say decrease max. up to 3 points from current text font baseline.
Is there any property by which we can achieve this?

Please suggest.

Regards,
Anshul

Hi Stoyan,
Thanks for the quick reply.

diagram.MeasureString to fits the text into the node but we are using textarea inside the node. What we can do in this case?

Code for our custom node is as follows,

textOnTheRight = new MindFusion.Diagramming.Wpf.Shape(
		     Shapes.Rectangle.Outline,// reuse the rectangular shape
		     null,// no decorations
		     new ElementTemplate[]// define text region
			  {
				new LineTemplate(32, 19, 90, 19),
				new LineTemplate(90,19, 90, 79),
				new LineTemplate(90, 79, 32, 79),
				new LineTemplate(32, 79, 32, 19)
			  },
			   FillRule.EvenOdd,// doesn't matter here
			   "TextOnTheRight"// to access the shape later using Shape.FromId
		     ); 

Please suggest.

Thanks,
Anshul

Hi Stoyan,

This is working but it is working everytime i.e I want to decrease the node's font size by 1. If now text is fit into the text area than no need to decrease font size any more but if it is not than again do the same till fontsize-3.

One more thing, if font size is 12 and text is small enough to fit into the text area than we don't need to decrease the font size.

The code for Shape is as follows

textOnTheRight = new MindFusion.Diagramming.Wpf.Shape(
     Shapes.Rectangle.Outline,// reuse the rectangular shape
     null,// no decorations
     new ElementTemplate[]// define text region
  {
new LineTemplate(32, 29, 90, 29),
new LineTemplate(90,29, 90, 69),
new LineTemplate(90, 69, 32, 69),
new LineTemplate(32, 69, 32, 29)
  },
   FillRule.EvenOdd,// doesn't matter here
   "TextOnTheRight"// to access the shape later using Shape.FromId
     );
 

The code for which I have tried is as follows

private void SetFontSize(ShapeNode node)
	  {
		if (node != null)
		{
		    Rect bounds = node.Bounds;
		    double textAreaWidth = bounds.Width * 58 / 100; // Width of the text area
		    double textAreaHeight = bounds.Height * 40 / 100; // Height of the text area

		    Size textSize = diagram.MeasureString(node.Text, node.Font, (int)textAreaWidth, node.TextFormat);
		    while (textSize.Height > textAreaHeight && node.Font.Size > 9)
		    {
			  node.Font.Size -= 1;
			  node.Repaint(false);
			  SetFontSize(node);
		    }
		}
	  }  

Please suggest which check I am missing?

Regards,
Anshul

Everything seems fine in our test. Could you email us a saved diagram xml so we can try this with your text and font settings?

Stoyan

If you want the text to be trimmed, add this to the createNode method:

sf.Trimming = StringTrimming.Character;

but call MeasureString with trimming disabled:

StringFormat stF = node.TextFormat.Clone() as StringFormat;
stF.Trimming = StringTrimming.None;
Size size = diagram.MeasureString(node.Text, node.Font, (int)Math.Ceiling(textAreaW), stF);
if ((size.Height > textAreaH))
...

Hi Anshul,

The control calls DrawingContext.DrawText(new FormattedText(...)) to render node labels, and FormattedText provides only MaxTextWidth and Trimming properties from what we can see. FormattedText wraps text only at word boundaries, and if a long word does not fit, it's always trimmed instead of wrapped. We could not find any way to force wrapping in this case. Let us know if you know of any way to do that, and we can add a property to enable it.

Stoyan

Hi Stoyan,

I found one more issue. Try the string "Copy of Copy(3) of Input" for node's text, you will see trimming text in first line only.

Now remove last 3 character from the string i.e. "Copy of Copy(3) of In" and try again for node's text. You will see text wrapped in the second line in this case.

It should also wrap first string because second line can contain "Input" word (because of short length text).

Please suggest for this.

Regards,
Anshul

Hi Stoyan,

Thanks for the detailed information.

Would you provide support for "multiple DrawText calls" and "EnableStyledText - trimming with ellipsis" in next build?

Regards,
Anshul