< prev index next >

src/java.desktop/share/classes/javax/swing/text/FieldView.java

Print this page




 172 
 173     // --- View methods -------------------------------------------
 174 
 175     /**
 176      * Renders using the given rendering surface and area on that surface.
 177      * The view may need to do layout and create child views to enable
 178      * itself to render into the given allocation.
 179      *
 180      * @param g the rendering surface to use
 181      * @param a the allocated region to render into
 182      *
 183      * @see View#paint
 184      */
 185     public void paint(Graphics g, Shape a) {
 186         Rectangle r = (Rectangle) a;
 187         g.clipRect(r.x, r.y, r.width, r.height);
 188         super.paint(g, a);
 189     }
 190 
 191     /**
 192      * Adjusts <code>a</code> based on the visible region and returns it.
 193      */
 194     Shape adjustPaintRegion(Shape a) {
 195         return adjustAllocation(a);
 196     }
 197 
 198     /**
 199      * Determines the preferred span for this view along an
 200      * axis.
 201      *
 202      * @param axis may be either View.X_AXIS or View.Y_AXIS
 203      * @return   the span the view would like to be rendered into &gt;= 0.
 204      *           Typically the view is told to render into the span
 205      *           that is returned, although there is no guarantee.
 206      *           The parent may choose to resize or break the view.
 207      */
 208     public float getPreferredSpan(int axis) {
 209         switch (axis) {
 210         case View.X_AXIS:
 211             Segment buff = SegmentCache.getSharedSegment();
 212             Document doc = getDocument();




 172 
 173     // --- View methods -------------------------------------------
 174 
 175     /**
 176      * Renders using the given rendering surface and area on that surface.
 177      * The view may need to do layout and create child views to enable
 178      * itself to render into the given allocation.
 179      *
 180      * @param g the rendering surface to use
 181      * @param a the allocated region to render into
 182      *
 183      * @see View#paint
 184      */
 185     public void paint(Graphics g, Shape a) {
 186         Rectangle r = (Rectangle) a;
 187         g.clipRect(r.x, r.y, r.width, r.height);
 188         super.paint(g, a);
 189     }
 190 
 191     /**
 192      * Adjusts {@code a} based on the visible region and returns it.
 193      */
 194     Shape adjustPaintRegion(Shape a) {
 195         return adjustAllocation(a);
 196     }
 197 
 198     /**
 199      * Determines the preferred span for this view along an
 200      * axis.
 201      *
 202      * @param axis may be either View.X_AXIS or View.Y_AXIS
 203      * @return   the span the view would like to be rendered into &gt;= 0.
 204      *           Typically the view is told to render into the span
 205      *           that is returned, although there is no guarantee.
 206      *           The parent may choose to resize or break the view.
 207      */
 208     public float getPreferredSpan(int axis) {
 209         switch (axis) {
 210         case View.X_AXIS:
 211             Segment buff = SegmentCache.getSharedSegment();
 212             Document doc = getDocument();


< prev index next >