Problem with Label and dynamic size.

[greg_orille]

Hi,

I'm building a grid, and i want to use a class to create a custom Label adapted to a size.

i use :

class SizeableLabelField extends LabelField {

SizeableLabelField(String text) {
super(text);
}

public int getPreferredWidth() {
return getFont().getAdvance(getText());
}

protected void layout(int width, int height) {
width = getPreferredWidth();
height = super.getPreferredHeight();
super.layout(width, height);
super.setExtent(width, height);
}
}

but the text is cutted :(

Any idea to create a grid with a column adapted to the biggest text ?

[richard.puckett]

It sounds like what you want is a Manager function (if I'm understanding correctly).

Say you have a Manager composed of some text fields - say, a VerticalFieldManager which represents a column in a grid. Here's some pseudocode which shows approximately how to set a column to the greatest width of all contained fields. HTH.

protected void sublayout(int width, int height) {
   int maxWidth = 0;
   int yOffset = 0;
   int fieldCount = getFieldCount();

   for (int i = 0; i < fieldCount; i++) {
      Field field = getField(i);
      layoutChild(field, width, height);
      setPositionChild(field, 0, yOffset);
      yOffset += field.getHeight();
      maxWidth = Math.max(maxWidth, field.getWidth();
   }

   setExtent(maxWidth, yOffset);
}

[greg_orille]

Exactly that.

So what i need to do. A HorizontalFieldManager, which contains, VerticalFieldManager ?

[greg_orille]

Thanks, It works GREAT but in order to have a powerfull GRID, i want to have an Horizontal and Vertical scrollbar only on the grid. I don't want scrollbar in the mainscreen.

My GRID Class :

public class Grid {

    private int columns;
    private int rows;
    private HorizontalFieldManager view;

    public Grid(Manager m, int c, int r) {
        
        // CONTAINER
        view = new HorizontalFieldManager();
        
        columns = c;
        rows = r;

        // Counter CCOLUMNS
        int i = 0;
        // Counter ROWS
        int j = 0;

        // FILL DATA
        for (i = 0; i < columns; i++) {

            // Create Column.
            Column myColumns = new Column(VerticalFieldManager.NO_HORIZONTAL_SCROLL | VerticalFieldManager.NO_VERTICAL_SCROLL);

            // Create Lines in Colomn.
            for (j = 0; j < rows; j++) {
                if (j != 2) {
                    LabelField label = new LabelField("-",Field.FIELD_HCENTER);
                    myColumns.add(label);
                } else {
                    LabelField label = new LabelField("AAA",Field.FIELD_HCENTER);
                    myColumns.add(label);
                }
  
            }
            view.add(myColumns);
        }

    }

    public Field getField(int c,int r){
        return ((VerticalFieldManager)view.getField(c)).getField(r);
    }
    
    public HorizontalFieldManager getView() {
        return view;
    }

    public void setView(HorizontalFieldManager view) {
        this.view = view;
    }
}

[greg_orille]

i have also this problem :

I have used your code to have a Column adapted to the biggest labelField.

But i have a problem, if i use colors for the column... field... there is a space.

We can't force to change the width of all labels in order to have all the label with the same width ?

See the image.

Thanks you for you help

[richard.puckett]

There's quite a bit you can do with laying out standard fields - it just involves overriding the right methods, generally the (sub)layout methods. I don't quite understand what I'm seeing in your screenshot versus what you're trying to do. Maybe a little more explanation of what you're trying to achieve?

[greg_orille]

Sorry for my bad english ;)

So i will try to explain.

With you code, i succeded to get a column adapted to the biggest label.

the problem :

if you set a backgroundcolor to the VerticalFieldManager (in my case : AQUA)

When you have a field smaller than the column (for example the column's header "NOM" and you set a background (YELLOW) the background dosn't fill all the width of the column (On the right of this label, we can see the background of the verticalFieldManager)

Do you understand ?

Thanks you for your help.

[greg_orille]

Up :(