/*=========================================================================

  Library:   CTK
 
  Copyright (c) 2010  Kitware Inc.

  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.commontk.org/LICENSE

  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.
 
=========================================================================*/

#ifndef __ctkColorPickerButton_h
#define __ctkColorPickerButton_h

// Qt includes
#include <QPushButton>
#include <QColor>

// CTK includes
#include "CTKWidgetsExport.h"

///
/// ctkColorPickerButton is a QPushButton that refers to a color. The color 
/// and the name of the color (i.e. #FFFFFF) are displayed on the button.
/// When clicked, a color dialog pops up to select a new color 
/// for the QPushButton.
class CTK_WIDGETS_EXPORT ctkColorPickerButton : public QPushButton
{
  Q_OBJECT
  Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY colorChanged USER true)
  Q_PROPERTY(bool displayColorName READ displayColorName WRITE setDisplayColorName DESIGNABLE true)
public:
  /// By default, the color is black
  explicit ctkColorPickerButton(QWidget* parent = 0);
  /// By default, the color is black
  explicit ctkColorPickerButton(const QString& text, QWidget* parent = 0 );
  explicit ctkColorPickerButton(const QColor& color, const QString & text, QWidget* parent = 0 );
  virtual ~ctkColorPickerButton();
 
  ///
  /// Current selected color
  QColor color()const;

  ///
  /// Display the color name after color selection
  bool displayColorName()const;

public slots:
  ///
  /// Set a new current color without opening a dialog
  void setColor(const QColor& color);

  /// 
  /// Opens a color dialog to select a new current color.
  void changeColor();

  ///
  /// Toggle the display of the color name after color selection.
  /// By default, this is activated.
  void setDisplayColorName(bool displayColorName);

signals:
  /// colorChanged is fired anytime a new color is set. Programatically or
  /// by the user when choosing a color from the color dialog
  void colorChanged(QColor);

protected slots:
  void onToggled(bool change = true);

protected:
  QColor Color;
  bool DisplayColorName;
};

#endif