xml/dom-openapi/src/com/intellij/util/xml/ui/StripeTableCellRenderer.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.util.xml.ui;
  17
  18 import javax.swing.table.TableCellRenderer;
  19 import javax.swing.*;
  20 import java.awt.*;
  21
  22 /**
  23  * @author peter
  24  */
  25 public class StripeTableCellRenderer implements TableCellRenderer {
  26   private final TableCellRenderer myRenderer;
  27   private static final double FACTOR = 0.92;
  28
  29   public StripeTableCellRenderer(final TableCellRenderer renderer) {
  30     myRenderer = renderer;
  31   }
  32
  33
  34   public StripeTableCellRenderer() {
  35     this(null);
  36   }
  37
  38   public static Color darken(Color color) {
  39     return new Color(Math.max((int)(color.getRed()  *FACTOR), 0),
  40                      Math.max((int)(color.getGreen()*FACTOR), 0),
  41                      Math.max((int)(color.getBlue() *FACTOR), 0));
  42   }
  43
  44   public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
  45     final JComponent component = (JComponent)getRenderer(row, column).getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
  46     if (row % 2 != 0 && !isSelected) {
  47       component.setBackground(darken(table.getBackground()));
  48     } else {
  49       component.setBackground(isSelected ? table.getSelectionBackground() : table.getBackground());
  50     }
  51     component.setOpaque(true);
  52     return component;
  53   }
  54
  55   protected TableCellRenderer getRenderer(int row, int column) {
  56     return myRenderer;
  57   }
  58 }