Class FormData

java.lang.Object
org.eclipse.swt.layout.FormData
public final class FormData extends Object
Instances of this class are used to define the attachments of a control in a FormLayout.

To set a FormData object into a control, you use the setLayoutData () method. To define attachments for the FormData, set the fields directly, like this: 

                FormData data = new FormData();
                data.left = new FormAttachment(0,5);
                data.right = new FormAttachment(100,-5);
                button.setLayoutData(formData);

FormData contains the FormAttachments for each edge of the control that the FormLayout uses to determine the size and position of the control. FormData objects also allow you to set the width and height of controls within a FormLayout.

Since:
2.0
See Also:

  • Field Details

    • width

      public int width
      width specifies the preferred width in points. This value is the wHint passed into Control.computeSize(int, int, boolean) to determine the preferred size of the control. The default value is SWT.DEFAULT.
      See Also:

    • height

      public int height
      height specifies the preferred height in points. This value is the hHint passed into Control.computeSize(int, int, boolean) to determine the preferred size of the control. The default value is SWT.DEFAULT.
      See Also:

    • left

      public FormAttachment left
      left specifies the attachment of the left side of the control.

    • top

      public FormAttachment top
      top specifies the attachment of the top of the control.

    • bottom

      public FormAttachment bottom
      bottom specifies the attachment of the bottom of the control.

    • cacheWidth

      int cacheWidth

    • cacheHeight

      int cacheHeight

    • defaultWhint

      int defaultWhint

    • defaultHhint

      int defaultHhint

    • defaultWidth

      int defaultWidth

    • defaultHeight

      int defaultHeight

    • currentWhint

      int currentWhint

    • currentHhint

      int currentHhint

    • currentWidth

      int currentWidth

    • currentHeight

      int currentHeight

    • cacheLeft

      FormAttachment cacheLeft

    • cacheRight

      FormAttachment cacheRight

    • cacheTop

      FormAttachment cacheTop

    • cacheBottom

      FormAttachment cacheBottom

    • isVisited

      boolean isVisited

    • needed

      boolean needed

  • Constructor Details

    • FormData

      public FormData()
      Constructs a new instance of FormData using default values.

    • FormData

      public FormData(int width, int height)
      Constructs a new instance of FormData according to the parameters. A value of SWT.DEFAULT indicates that no minimum width or no minimum height is specified.
      Parameters:
      width - a minimum width for the control
      height - a minimum height for the control

  • Method Details

    • computeSize

      void computeSize(Control control, int wHint, int hHint, boolean flushCache)

    • flushCache

      void flushCache()

    • getWidth

      int getWidth(Control control, boolean flushCache)

    • getHeight

      int getHeight(Control control, boolean flushCache)

    • getBottomAttachment

      FormAttachment getBottomAttachment(Control control, int spacing, boolean flushCache)

    • getLeftAttachment

      FormAttachment getLeftAttachment(Control control, int spacing, boolean flushCache)

    • getName

      String getName()

    • getRightAttachment

      FormAttachment getRightAttachment(Control control, int spacing, boolean flushCache)

    • getTopAttachment

      FormAttachment getTopAttachment(Control control, int spacing, boolean flushCache)

    • toString

      public String toString()
      Returns a string containing a concise, human-readable description of the receiver.
      Overrides:
      toString in class Object
      Returns:
      a string representation of the FormData object