StripeTableCellRenderer.java

package open.dolphin.table;

import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Rectangle;
import javax.swing.BorderFactory;
import javax.swing.JComponent;
import javax.swing.JTable;
import javax.swing.border.Border;
import javax.swing.plaf.basic.BasicTableUI;
import javax.swing.table.DefaultTableCellRenderer;
import open.dolphin.client.GUIConst;

/**
 * ストライプテーブルのセルレンダラ
 *
 * @author masuda, Masuda Naika
 */

public class StripeTableCellRenderer extends DefaultTableCellRenderer {

    private static final Border emptyBorder = BorderFactory.createEmptyBorder();
    private static final Color[] ROW_COLORS = {GUIConst.TABLE_EVEN_COLOR, GUIConst.TABLE_ODD_COLOR};
    private static final int ROW_HEIGHT = 18;

    private JTable table;

    public StripeTableCellRenderer() {
        super();
    }
    public StripeTableCellRenderer(JTable table) {
        super();
        setTable(table);
    }

    public final void setTable(JTable table) {
        this.table = table;
        table.setRowHeight(ROW_HEIGHT);
        table.setFillsViewportHeight(true);   // viewportは広げておく
        //table.setShowVerticalLines(false);
        //table.setShowHorizontalLines(false);
        table.setShowGrid(false);
        table.setIntercellSpacing(new Dimension(0, 0));
        table.setUI(new StripeTableUI());
    }

    public void setDefaultRenderer() {
        table.setDefaultRenderer(Object.class, this);
    }

    // 選択・非選択の色分けはここでする。特に指定したいときは後で上書き
    // ストライプはStripeTableUIが描画する
    @Override
    public Component getTableCellRendererComponent(JTable table, Object value,
            boolean isSelected, boolean hasFocus,
            int row, int column) {

        setOpaque(true);
        super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);

        if (isSelected) {
            setForeground(table.getSelectionForeground());
            setBackground(table.getSelectionBackground());
            ((JComponent) table.getDefaultRenderer(Boolean.class)).setOpaque(true);
        } else {
            setForeground(table.getForeground());
            setBackground(table.getBackground());
            ((JComponent) table.getDefaultRenderer(Boolean.class)).setOpaque(false);
        }

        // 選択したときにcellに枠がつくのを消す。Nimbusでは効果がないｗ
        this.setBorder(emptyBorder);

        return this;
    }

    // テーブルにストライプの背景を描く
    // http://explodingpixels.wordpress.com/2008/10/05/making-a-jtable-fill-the-view-without-extension/
    // を改変。popupやtooltip表示後乱れるのを修正
    private static class StripeTableUI extends BasicTableUI {

        @Override
        public void paint(Graphics g, JComponent c) {
//minagawa^ 2013/04/22 残像残る対応
//            // get the row index at the top of the clip bounds (the first row to paint).
//            int rowAtPoint = table.rowAtPoint(g.getClipBounds().getLocation());
//            // get the y coordinate of the first row to paint. if there are no rows in the table, start
//            // painting at the top of the supplied clipping bounds.
//            int topY = rowAtPoint < 0 ? g.getClipBounds().y : table.getCellRect(rowAtPoint, 0, true).y;
//
//            // create a counter variable to hold the current row. if there are no rows in the table,
//            // start the counter at 0.
//            int currentRow = rowAtPoint < 0 ? 0 : rowAtPoint;
//            while (topY < g.getClipBounds().y + g.getClipBounds().height) {
//                int bottomY = topY + table.getRowHeight();
//                g.setColor(ROW_COLORS[currentRow & 1]);
//                g.fillRect(g.getClipBounds().x, topY, g.getClipBounds().width, bottomY);
//                topY = bottomY;
//                currentRow++;
//            }
//        super.paint(g, c);
            
            final Rectangle clipBounds = g.getClipBounds();
            final int rowHeight = table.getRowHeight();
            final int endY = clipBounds.y + clipBounds.height;

            int topY = clipBounds.y;
            int currentRow = topY / rowHeight;
            int height = rowHeight - topY % rowHeight;
            
            while (topY < endY) {
                int bottomY = topY + height;
                g.setColor(ROW_COLORS[currentRow & 1]);
                g.fillRect(clipBounds.x, topY, clipBounds.width, Math.min(bottomY, endY));
                topY = bottomY;
                height = rowHeight;
                currentRow++;
            }
            super.paint(g, c);
//minagawa$
        }
    }
}