CMonospaceRenderer.java

/*
Copyright 2011-2016 Google Inc. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package com.google.security.zynamics.zylib.gui.tables;

import com.google.security.zynamics.zylib.gui.GuiHelper;

import java.awt.Color;
import java.awt.Component;
import java.awt.Font;

import javax.swing.BorderFactory;
import javax.swing.JLabel;
import javax.swing.JTable;
import javax.swing.border.Border;
import javax.swing.table.TableCellRenderer;


/**
 * Can be used to render cells using the default monospaced font.
 */
public class CMonospaceRenderer extends JLabel implements TableCellRenderer {
  private static final long serialVersionUID = -9211438577833845874L;

  private static final Font INSTRUCTION_FONT = new Font(GuiHelper.getMonospaceFont(), 0, 12);

  private Border unselectedBorder = null;
  private Border selectedBorder = null;

  public CMonospaceRenderer() {
    setOpaque(true); // MUST do this for background to show up.
  }

  @Override
  public Component getTableCellRendererComponent(final JTable table, final Object value,
      final boolean isSelected, final boolean hasFocus, final int row, final int column) {
    setFont(INSTRUCTION_FONT);

    setText(value.toString());

    if (isSelected) {
      setBackground(table.getSelectionBackground());

      if (selectedBorder == null) {
        selectedBorder =
            BorderFactory.createMatteBorder(2, 5, 2, 5, table.getSelectionBackground());
      }

      setBorder(selectedBorder);
    } else {
      setBackground(Color.WHITE);

      if (unselectedBorder == null) {
        unselectedBorder = BorderFactory.createMatteBorder(2, 5, 2, 5, table.getBackground());
      }

      setBorder(unselectedBorder);
    }

    return this;
  }

}