panepainter.java

修正了jdk1.6中对托盘事件产生异常的bug.

/*
 * Copyright (C) 2004 NNL Technology AB
 * Visit www.infonode.net for information about InfoNode(R) 
 * products and how to contact NNL Technology AB.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, 
 * MA 02111-1307, USA.
 */


// $Id: PanePainter.java,v 1.11 2005/12/04 13:46:05 jesper Exp $
package net.infonode.tabbedpanel.theme.internal.laftheme;

import net.infonode.util.Direction;

import javax.swing.*;
import java.awt.*;
import java.awt.event.FocusEvent;
import java.awt.event.MouseEvent;
import java.awt.event.MouseWheelEvent;

class PanePainter extends JTabbedPane {
  private boolean mouseEntered = false;

  private boolean focusActive = false;

  private boolean useMouseEnterExit = false;

  private Direction direction;

  PanePainter(Direction d) {
    setTabPlacement(d);
    setTabLayoutPolicy(JTabbedPane.WRAP_TAB_LAYOUT);

    useMouseEnterExit = UIManager.getLookAndFeel().getClass().getName().indexOf(".LiquidLookAndFeel") > -1;

    if (!useMouseEnterExit)
      super.processMouseEvent(
          new MouseEvent(this, MouseEvent.MOUSE_ENTERED, System.currentTimeMillis(), 0, 0, 0, 0, false));
  }

  void setTabAreaEntered(boolean entered) {
    if (entered)
      super.processMouseEvent(
          new MouseEvent(this, MouseEvent.MOUSE_ENTERED, System.currentTimeMillis(), 0, 0, 0, 0, false));
    else
      super.processMouseEvent(
          new MouseEvent(this, MouseEvent.MOUSE_EXITED, System.currentTimeMillis(), 0, -1, -1, 0, false));
  }

  private void setTabPlacement(Direction d) {
    this.direction = d;

    if (d == Direction.UP)
      setTabPlacement(JTabbedPane.TOP);
    else if (d == Direction.LEFT)
      setTabPlacement(JTabbedPane.LEFT);
    else if (d == Direction.RIGHT)
      setTabPlacement(JTabbedPane.RIGHT);
    else
      setTabPlacement(JTabbedPane.BOTTOM);
  }

  void setMouseEntered(boolean entered) {
    if (useMouseEnterExit) {
      if (entered && !mouseEntered) {
        super.processMouseEvent(
            new MouseEvent(this, MouseEvent.MOUSE_ENTERED, System.currentTimeMillis(), 0, 0, 0, 0, false));
      }
      else if (!entered && mouseEntered) {
        super.processMouseEvent(
            new MouseEvent(this, MouseEvent.MOUSE_EXITED, System.currentTimeMillis(), 0, -1, -1, 0, false));
      }
    }
    else {
      if (!entered && mouseEntered) {
        super.processMouseMotionEvent(
            new MouseEvent(this, MouseEvent.MOUSE_MOVED, System.currentTimeMillis(), 0, -1, -1, 0, false));
      }
    }

    mouseEntered = entered;
  }

  void setHoveredTab(int index) {
    if (index > -1 && index < getTabCount()) {
      Rectangle hoverBounds = getBoundsAt(index);
      int xPos = hoverBounds.x + hoverBounds.width / 2;
      int yPos = hoverBounds.y + hoverBounds.height / 2;

      super.processMouseMotionEvent(
          new MouseEvent(this, MouseEvent.MOUSE_MOVED, System.currentTimeMillis(), 0, xPos, yPos, 0, false));
    }
  }

  void setFocusActive(boolean active) {
    if (active && !focusActive)
      super.processFocusEvent(new FocusEvent(this, FocusEvent.FOCUS_GAINED));
    else if (!active && focusActive)
      super.processFocusEvent(new FocusEvent(this, FocusEvent.FOCUS_LOST));

    focusActive = active;
  }

  Direction getDirection() {
    return direction;
  }

  void doValidation() {
    Component c = this;
    while (c != null) {
      c.invalidate();
      c = c.getParent();
    }
    validate();
  }

  void removeAllTabs() {
    removeAll();
    doValidation();
  }

  public Font getFont() {
    Font font = UIManager.getFont("TabbedPane.font");
    return font == null ? super.getFont() : font;
  }

  public void updateUI() {
    setBorder(null);
    setBackground(null);
    setForeground(null);
    setOpaque(false);

    super.updateUI();

    setTabLayoutPolicy(WRAP_TAB_LAYOUT);

    useMouseEnterExit = UIManager.getLookAndFeel().getClass().getName().indexOf(".LiquidLookAndFeel") > -1;

    if (!useMouseEnterExit)
      super.processMouseEvent(
          new MouseEvent(this, MouseEvent.MOUSE_ENTERED, System.currentTimeMillis(), 0, 0, 0, 0, false));
  }

  public boolean hasFocus() {
    return focusActive;
  }

  public void repaint() {
  }

  public void repaint(long tm, int x, int y, int width, int height) {
  }

  void paint(Graphics g, int tx, int ty) {
    Rectangle clip = g.getClipBounds();

    if (clip != null && clip.x == 0 && clip.y == 0 && clip.width == 0 && clip.height == 0) {
      return;
    }

    g.translate(tx, ty);
    update(g);
    g.translate(-tx, -ty);
  }

  protected void processMouseEvent(MouseEvent e) {
  }

  protected void processMouseMotionEvent(MouseEvent e) {
  }

  protected void processFocusEvent(FocusEvent e) {
  }

  protected void processMouseWheelEvent(MouseWheelEvent e) {
  }
}