Class DefaultCellRenderer

All Implemented Interfaces:
IInternalWidget, IRenderer

public class DefaultCellRenderer
extends GridCellRenderer
The renderer for a cell in Grid.
Since:
2.0.0
  • Field Details

  • Constructor Details

  • Method Details

    • paint

      public void paint​(org.eclipse.swt.graphics.GC gc, java.lang.Object value)
      Paints the visual representation of the given value on the given GC. The actual class of the value object is determined by the use of the implementing class.

      Implementors need to respect the bounds values that may have been specified. The bounds values may affect the x and y values for all drawing operations as well as the width and heights. Implementors may use a Transform to translate the coordinates of all the drawing operations, otherwise they will need to offset each draw.

      Parameters:
      gc - GC to paint with
      value - the value being painted
    • computeSize

      public org.eclipse.swt.graphics.Point computeSize​(org.eclipse.swt.graphics.GC gc, int wHint, int hHint, java.lang.Object value)
      Returns the size of the given value's visual representation.
      Parameters:
      gc - convenience GC for string and text extents
      wHint - given width (or SWT.DEFAULT)
      hHint - given height (or SWT.DEFAULT)
      value - value to be sized
      Returns:
      the size
    • notify

      public boolean notify​(int event, org.eclipse.swt.graphics.Point point, java.lang.Object value)
      Mechanism used to notify the light weight widgets that an event occurred that it might be interested in.
      Parameters:
      event - Event type.
      point - Location of event.
      value - New value.
      Returns:
      widget handled the event.
    • setTree

      public void setTree​(boolean tree)
      Overrides:
      setTree in class GridCellRenderer
      Parameters:
      tree - The tree to set.
    • setCheck

      public void setCheck​(boolean check)
      Overrides:
      setCheck in class GridCellRenderer
      Parameters:
      check - The check to set.
    • getTextBounds

      public org.eclipse.swt.graphics.Rectangle getTextBounds​(GridItem item, boolean preferred)
      Returns the bounds of the text in the cell. This is used when displaying in-place tooltips. If null is returned here, in-place tooltips will not be displayed. If the preferred argument is true then the returned bounds should be large enough to show the entire text. If preferred is false then the returned bounds should be be relative to the current bounds.
      Overrides:
      getTextBounds in class GridCellRenderer
      Parameters:
      item - item to calculate text bounds.
      preferred - true if the preferred width of the text should be returned.
      Returns:
      bounds of the text.