splitter_handle.h

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/*
 * Copyright (c) 2012, Willow Garage, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Willow Garage, Inc. nor the names of its
 *       contributors may be used to endorse or promote products derived from
 *       this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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 */
#ifndef SPLITTER_HANDLE_H
#define SPLITTER_HANDLE_H

#include <QWidget>

class QTreeView;

namespace rviz
{

class SplitterHandle: public QWidget
{
Q_OBJECT
public:
  SplitterHandle( QTreeView* parent = 0 );

  void setRatio( float ratio );

  float getRatio();

  bool eventFilter( QObject* event_target, QEvent* event );

  void setColor( QColor color ) { color_ = color; update(); }
  QColor getColor() const { return color_; }

protected:
  virtual void mousePressEvent( QMouseEvent* event );
  virtual void mouseMoveEvent( QMouseEvent* event );
  virtual void paintEvent( QPaintEvent* event );

private:
  void updateGeometry();

  QTreeView* parent_;
  int x_press_offset_;

  float first_column_size_ratio_;
  QColor color_;
};

} // end namespace rviz

#endif // SPLITTER_HANDLE_H