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Nebula ViewerCell with custom image [message #57177]

Wed, 06 August 2008 12:28

Eclipse User

Originally posted by: johnny.hensegard.telia.com

Hi,

I'm trying to print an image to a cell in the nebula grid.
I've tried two ways without success. Or maybe there is another way??

1.
Using the method ViewerCell.setImage(Image)
My problem here is that the image will not cover the whole cell,
the cell always puts a block of white space to the left of the image
(I have tried with bigger width than the cell has with the same result)

Example code:
GridViewerColumn col = new GridViewerColumn(viewer, SWT.NONE);
col.getColumn().setWidth(30);
col.setLabelProvider(new CellLabelProvider() {

@Override
public void update(ViewerCell cell) {
cell.setImage(new Image(Display.getDefault(), imageData));
}
});

2.
Using the GC to instead of setImage in the code below
GC gc = new GC(viewer.getGrid());
gc.setBackground(Display.getDefault().getSystemColor(SWT.COL OR_BLUE));
gc.fillRectangle(cell.getBounds());
gc.dispose();
This will flash the color once and then replace it with the original table

Cheers
/Johnny

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Re: Nebula ViewerCell with custom image [message #57205 is a reply to message #57177]

Wed, 06 August 2008 12:43

Thomas Schindl

Messages: 6651
Registered: July 2009

Senior Member

Hi,

Solution 2 can't work because when ever the table issues a redraw you
image is gone. Solution 1 should use a ColumnLabelProvider and you are
leaking in the example a lot of images because you are always creating a
new one.

If you are not satisfied with the default rendering you'll have to
replace the DefaultCellRenderer directly on the Grid-Widget with your
implementation.

Tom

Johnny schrieb:
> Hi,
>
> I'm trying to print an image to a cell in the nebula grid.
> I've tried two ways without success. Or maybe there is another way??
>
> 1.
> Using the method ViewerCell.setImage(Image)
> My problem here is that the image will not cover the whole cell,
> the cell always puts a block of white space to the left of the image
> (I have tried with bigger width than the cell has with the same result)
>
> Example code:
> GridViewerColumn col = new GridViewerColumn(viewer, SWT.NONE);
> col.getColumn().setWidth(30);
> col.setLabelProvider(new CellLabelProvider() {
>
> @Override
> public void update(ViewerCell cell) {
> cell.setImage(new Image(Display.getDefault(), imageData));
> }
> });
>
>
> 2.
> Using the GC to instead of setImage in the code below
> GC gc = new GC(viewer.getGrid());
> gc.setBackground(Display.getDefault().getSystemColor(SWT.COL OR_BLUE));
> gc.fillRectangle(cell.getBounds());
> gc.dispose();
> This will flash the color once and then replace it with the original table
>
> Cheers
> /Johnny
>
>
>
>
>
>
>

--
B e s t S o l u t i o n . at
------------------------------------------------------------ --------
Tom Schindl JFace-Committer
------------------------------------------------------------ --------

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