/********************************************************************
**                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/GUIWidget.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/GUIWidget.h>
#include <ICLQt/GUIDefinition.h>
#include <ICLQt/GUI.h>
#include <ICLQt/ProxyLayout.h>

#include <QLayout>
#include <QGridLayout>
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <ICLCore/CoreFunctions.h>
#include <ICLQt/GUISyntaxErrorException.h>
#include <QtCore/QString>

#include <ICLQt/IconFactory.h>
#include <ICLUtils/StringUtils.h>

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

namespace icl{
  namespace qt{
    
    GUIWidget::GUIWidget(const GUIDefinition &def, 
                         int minParamCount, 
                         int maxParamCount,
                         layoutType lt, 
                         const Size &defMinSize):m_handle(0){
      int minPC = minParamCount;
      int maxPC = maxParamCount == -1 ? minPC : maxParamCount;
      
      int nP = (int)def.numParams();
      if(nP > maxPC || nP < minPC){
        throw GUISyntaxErrorException(def.defString(),"invalid parameter count! found " + str(nP) + " expected [" +str(minPC) + "-"
                                      + str(maxPC) + "] for component type " + def.type());
      } 
  
      m_poGridLayout = 0;
      m_poOtherLayout = 0;
      Size givenSize = def.size();
      Size givenMinSize = def.minSize();
      Size givenMaxSize = def.maxSize();
          
      m_preferredSize = Size(0,0); // default
  
      if(givenSize != Size::null){
        m_preferredSize = Size(givenSize.width*GUI::CELLW,givenSize.height*GUI::CELLH);
        // setGeometry(QRect(QPoint(0,0),QSize(givenSize.width*GUI::CELLW,givenSize.height*GUI::CELLH)));
        // setMinimumSize(QSize(givenSize.width*GUI::CELLW,givenSize.height*GUI::CELLH));
        // setMaximumSize(QSize(givenSize.width*GUI::CELLW,givenSize.height*GUI::CELLH));
        //setSizePolicy(QSizePolicy(QSizePolicy::Preferred,QSizePolicy::Preferred));
      }else if(givenMinSize != Size::null || givenMaxSize != Size::null){
        if(givenMinSize != Size::null){
          setMinimumSize(QSize(givenMinSize.width*GUI::CELLW,givenMinSize.height*GUI::CELLH));
        } 
        if(givenMaxSize != Size::null){
          setMaximumSize(QSize(givenMaxSize.width*GUI::CELLW,givenMaxSize.height*GUI::CELLH));
        }
      }else if(defMinSize != Size::null){
        //resize(QSize(defMinSize.width*GUI::CELLW,defMinSize.height*GUI::CELLH));
        setMinimumSize(QSize(defMinSize.width*GUI::CELLW,defMinSize.height*GUI::CELLH));
        //setMaximumSize(QSize(defSize.width*GUI::CELLW,defSize.height*GUI::CELLH));
      }
      if(def.parentLayout()) def.parentLayout()->setContentsMargins(0,0,0,0);

      if(def.parentLayout()) def.parentLayout()->addWidget(this);
      if(def.getProxyLayout()) def.getProxyLayout()->addWidget(this);
  
      switch(lt){
        case noLayout: 
          break;
        case hboxLayout:
          m_poOtherLayout = new QHBoxLayout;
          break;
        case vboxLayout:
          m_poOtherLayout = new QVBoxLayout;
          break;
        case gridLayout:
          m_poGridLayout = new QGridLayout;
          break;
      }
      if(m_poGridLayout){
        m_poGridLayout->setMargin(def.margin());
        m_poGridLayout->setSpacing(def.spacing());
        setLayout(m_poGridLayout);
      }else if(m_poOtherLayout){
        m_poOtherLayout->setMargin(def.margin());
        m_poOtherLayout->setSpacing(def.spacing());
        setLayout(m_poOtherLayout);
      }
      m_poGUI = def.getGUI();
  
      setWindowIcon(IconFactory::create_icl_window_icon_as_qicon());
      
      if(def.handle() != "") m_handle = new std::string(def.handle());
      
      if(layout()) layout()->setContentsMargins(0,0,0,0);
      setContentsMargins(0,0,0,0);
    }
  
    QSize GUIWidget::sizeHint () const{
      if(m_preferredSize != Size(0,0)){
        return QSize(m_preferredSize.width,m_preferredSize.height);
      }else{
        return QWidget::sizeHint();
      }
    }
  
    GUIWidget::~GUIWidget(){
      if(m_handle)delete m_handle;
    }
    
    void GUIWidget::ioSlot(){
      this->processIO();
      cb();
    }
    
    void GUIWidget::addToGrid(QWidget *widget, int x, int y, int w, int h){
      ICLASSERT_RETURN(m_poGridLayout && layout() == m_poGridLayout);
      m_poGridLayout->addWidget(widget,y,x,h,w);
    }
  
    void GUIWidget::cb(){
      for(unsigned int i=0;i<m_vecCallbacks.size();++i){
        m_vecCallbacks[i]();
      }
      if(m_handle){
        for(unsigned int i=0;i<m_vecComplexCallbacks.size();++i){
          m_vecComplexCallbacks[i](*m_handle);
        }
      }
    }
  
  } // namespace qt
}