// --------------------------------------------------------------------------
//                   OpenMS -- Open-Source Mass Spectrometry
// --------------------------------------------------------------------------
// Copyright The OpenMS Team -- Eberhard Karls University Tuebingen,
// ETH Zurich, and Freie Universitaet Berlin 2002-2018.
//
// This software is released under a three-clause BSD license:
//  * 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 any author or any participating institution
//    may be used to endorse or promote products derived from this software
//    without specific prior written permission.
// For a full list of authors, refer to the file AUTHORS.
// --------------------------------------------------------------------------
// 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 ANY OF THE AUTHORS OR THE CONTRIBUTING
// INSTITUTIONS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// --------------------------------------------------------------------------
// $Maintainer: Timo Sachsenberg$
// $Authors: Marc Sturm $
// --------------------------------------------------------------------------

#pragma once

// OpenMS_GUI config
#include <OpenMS/VISUAL/OpenMS_GUIConfig.h>

//QT
#include <QtWidgets/QWidget>

class QPaintEvent;
class QMouseEvent;

namespace OpenMS
{

  /**
      @brief A widget for selecting a color.

      It represents a color (displayed as background color) and allows changing the color.

      \image html ColorSelector.png

      The above example image shows four ColorSelector instances on the right side.

      @ingroup Visual
  */
  class OPENMS_GUI_DLLAPI ColorSelector :
    public QWidget
  {
    Q_OBJECT

public:
    /// Constructor
    ColorSelector(QWidget * parent = nullptr);

    /// Destructor
    ~ColorSelector() override;

    /// Returns the selected color
    const QColor & getColor();

    /// Sets the selected color
    void setColor(const QColor &);

    /// Qt size hint
    QSize sizeHint() const override;
protected:
    ///@name Reimplemented Qt events
    //@{
    void paintEvent(QPaintEvent * e) override;
    void mousePressEvent(QMouseEvent * e) override;
    //@}
    QColor color_;
  };

}
