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How to hide Images (Labels) [message #1850717]

Tue, 15 March 2022 10:16

Peter Vilhelmsen

Messages: 7
Registered: March 2022

Junior Member

Hello,
I have replaced column headers by 16x16 images using a Cell Painter:

private void addCellPainter(IConfigRegistry configRegistry, String header, Image image) {
        ICellPainter imagePainter = new ImagePainter(image);
    	configRegistry.registerConfigAttribute(
                CellConfigAttributes.CELL_PAINTER,
                imagePainter,	
                DisplayMode.NORMAL,
                header);
	}

addCellPainter(configRegistry, TIME, vi.getIcon(ViewImage.IMAGE_TIME));

I have added a check mark option for the user to choose between text and icon. How can I easily switch between text and icons?

Is there a doCommand(new ...)?

I have tried looping all columns, removing the label (two different ways), but either doesn't have effect.

loop over i:

LabelStack ls = columnHeaderLayer.getConfigLabelsByPosition(i, 0);
ls.removeLabel(TIME);
columnHeaderLayer.getConfigLabelsByPosition(i, 0).removeLabel(TIME);

Best regards
Peter

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Re: How to hide Images (Labels) [message #1850724 is a reply to message #1850717]

Tue, 15 March 2022 13:41

Dirk Fauth

Messages: 2902
Registered: July 2012

Senior Member

Modifications on the LabelStack only work via a IConfigLabelAccumulator on the Layers. If you modify the LabelStack outside of that mechanism, a reload will re-calculate the LabelStack and therefore override your changes again.

There are two options to solve your requirement:
1. make your label mechanism aware of a configuration from the outside (your check mark option) and only add the label if needed (reactive approach)
2. register/unregister your painter dynamically on clicks on the check mark option (active approach)

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