/********************************************************************
**                Image Component Library (ICL)                    **
**                                                                 **
** Copyright (C) 2006-2013 CITEC, University of Bielefeld          **
**                         Neuroinformatics Group                  **
** Website: www.iclcv.org and                                      **
**          http://opensource.cit-ec.de/projects/icl               **
**                                                                 **
** File   : ICLQt/src/ICLQt/ColorLabel.cpp                         **
** Module : ICLQt                                                  **
** Authors: Christof Elbrechter                                    **
**                                                                 **
**                                                                 **
** GNU LESSER GENERAL PUBLIC LICENSE                               **
** This file may be used under the terms of the GNU Lesser General **
** Public License version 3.0 as published by the                  **
**                                                                 **
** Free Software Foundation and appearing in the file LICENSE.LGPL **
** included in the packaging of this file.  Please review the      **
** following information to ensure the license requirements will   **
** be met: http://www.gnu.org/licenses/lgpl-3.0.txt                **
**                                                                 **
** The development of this software was supported by the           **
** Excellence Cluster EXC 277 Cognitive Interaction Technology.    **
** The Excellence Cluster EXC 277 is a grant of the Deutsche       **
** Forschungsgemeinschaft (DFG) in the context of the German       **
** Excellence Initiative.                                          **
**                                                                 **
********************************************************************/

#include <ICLQt/ColorLabel.h>
#include <QPainter>

using namespace icl::utils;
using namespace icl::core;

namespace icl{
  namespace qt{
  
    ColorLabel::ColorLabel(Color4D &color, bool useAlpha, QWidget *parent):
      ThreadedUpdatableWidget(parent),m_color(color),m_hasAlpha(useAlpha){}
      
  
      /// reimplemented drawin function (draw the current text centered)
    void ColorLabel::paintEvent(QPaintEvent *evt){
      m_oMutex.lock();
      QColor c(m_color[0],m_color[1],m_color[2]);
      m_oMutex.unlock();
  
      float a = m_color[3];
      
      QPainter p(this);
      p.setBrush(c);
      p.setPen(QColor(255,255,255,128));
      
      p.drawRect(QRect(2,2,width()-4,height()-4));
      
      if(m_hasAlpha && (a != 255) ){
        if((m_color[0]+m_color[1]+m_color[2]) > 1.5 * 255){
          p.setPen(QColor(0,0,0));
        }else{
          p.setPen(QColor(255,255,255));
        }
        
        p.drawText(QRect(2,2,width()-4,height()-4),Qt::AlignCenter|Qt::Horizontal,QString::number((int)(a*100./256.)) + "%");;
      }
    }
  
      /// sets new color rgb
    void ColorLabel::setColor(const Color &color){
      m_oMutex.lock();
      m_color = Color4D(color[0],color[1],color[2],0);
      m_oMutex.unlock();
      updateFromOtherThread();
    }
  
    /// sets new color rgba
    void ColorLabel::setColor(const Color4D &color){
      m_oMutex.lock();
      m_color = Color4D(color[0],color[1],color[2],color[3]);
      m_oMutex.unlock();
      updateFromOtherThread();
    }
  
      /// returns current color
    Color ColorLabel::getRGB() const{
      return Color(m_color[0],m_color[1],m_color[2]);
    }
      
      /// returns current rgba color
    Color4D ColorLabel::getRGBA() const{
      return m_color;
    }
      
      /// returns current red value
    int ColorLabel::getRed() const{
      return m_color[0];
    }
  
      /// returns current green value
    int ColorLabel::getGreen() const{
      return m_color[1];
    }
  
      /// returns current blue value
    int ColorLabel::getBlue() const{
      return m_color[2];
    }
  
      /// return current alpha value
    int ColorLabel::getAlhpa() const{
      return m_color[3];
    }
      
      /// returns wheter internal color uses alpha value
    bool ColorLabel::hasAlpha() const{
      return m_hasAlpha;
    }
  } // namespace qt
}