Class DefaultCellRenderer

    • Field Detail

      • leftMargin

        int leftMargin
      • rightMargin

        int rightMargin
      • topMargin

        int topMargin
      • bottomMargin

        int bottomMargin
      • textTopMargin

        int textTopMargin
      • textBottomMargin

        int textBottomMargin
      • treeIndent

        int treeIndent
      • textLayout

        private org.eclipse.swt.graphics.TextLayout textLayout
    • Constructor Detail

      • DefaultCellRenderer

        public DefaultCellRenderer()
    • Method Detail

      • 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
      • getVerticalAlignmentAdjustment

        private int getVerticalAlignmentAdjustment​(int textHeight,
                                                   int cellHeight)
      • getBranches

        private int[] getBranches​(GridItem item)
        Calculates the sequence of branch lines which should be rendered for the provided item
        Parameters:
        item -
        Returns:
        an array of integers composed using the constants in BranchRenderer
      • 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.
      • overCheck

        private boolean overCheck​(GridItem item,
                                  org.eclipse.swt.graphics.Point point)
      • getToggleIndent

        private int getToggleIndent​(GridItem item)
      • overToggle

        private boolean overToggle​(GridItem item,
                                   org.eclipse.swt.graphics.Point point)
      • 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.
      • isCenteredCheckBoxOnly

        private boolean isCenteredCheckBoxOnly​(GridItem item)