845 */
846 public void reshape(int x, int y, int w, int h) {
847 boolean sizeChanged = (getWidth() != w) || (getHeight() != h);
848 if (sizeChanged) {
849 backingStoreImage = null;
850 }
851 super.reshape(x, y, w, h);
852 if (sizeChanged || viewChanged) {
853 viewChanged = false;
854
855 fireStateChanged();
856 }
857 }
858
859
860 /**
861 * Used to control the method of scrolling the viewport contents.
862 * You may want to change this mode to get maximum performance for your
863 * use case.
864 *
865 * @param mode one of the following values:
866 * <ul>
867 * <li> JViewport.BLIT_SCROLL_MODE
868 * <li> JViewport.BACKINGSTORE_SCROLL_MODE
869 * <li> JViewport.SIMPLE_SCROLL_MODE
870 * </ul>
871 *
872 * @see #BLIT_SCROLL_MODE
873 * @see #BACKINGSTORE_SCROLL_MODE
874 * @see #SIMPLE_SCROLL_MODE
875 *
876 * @beaninfo
877 * bound: false
878 * description: Method of moving contents for incremental scrolls.
879 * enum: BLIT_SCROLL_MODE JViewport.BLIT_SCROLL_MODE
880 * BACKINGSTORE_SCROLL_MODE JViewport.BACKINGSTORE_SCROLL_MODE
881 * SIMPLE_SCROLL_MODE JViewport.SIMPLE_SCROLL_MODE
882 *
883 * @since 1.3
884 */
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845 */
846 public void reshape(int x, int y, int w, int h) {
847 boolean sizeChanged = (getWidth() != w) || (getHeight() != h);
848 if (sizeChanged) {
849 backingStoreImage = null;
850 }
851 super.reshape(x, y, w, h);
852 if (sizeChanged || viewChanged) {
853 viewChanged = false;
854
855 fireStateChanged();
856 }
857 }
858
859
860 /**
861 * Used to control the method of scrolling the viewport contents.
862 * You may want to change this mode to get maximum performance for your
863 * use case.
864 *
865 * Some scroll modes may be not supported by some window implementations.
866 * In this case the unsupported mode will be replaced by another one
867 * when the component is added to a window.
868 *
869 * @param mode one of the following values:
870 * <ul>
871 * <li> JViewport.BLIT_SCROLL_MODE
872 * <li> JViewport.BACKINGSTORE_SCROLL_MODE
873 * <li> JViewport.SIMPLE_SCROLL_MODE
874 * </ul>
875 *
876 * @see #BLIT_SCROLL_MODE
877 * @see #BACKINGSTORE_SCROLL_MODE
878 * @see #SIMPLE_SCROLL_MODE
879 *
880 * @beaninfo
881 * bound: false
882 * description: Method of moving contents for incremental scrolls.
883 * enum: BLIT_SCROLL_MODE JViewport.BLIT_SCROLL_MODE
884 * BACKINGSTORE_SCROLL_MODE JViewport.BACKINGSTORE_SCROLL_MODE
885 * SIMPLE_SCROLL_MODE JViewport.SIMPLE_SCROLL_MODE
886 *
887 * @since 1.3
888 */
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