#include <QtGui>
#include "VFrame.h"

VFrame::VFrame(QWidget * parent):
   QWidget(parent),
   fMouseMovable(false)
{
   setCursor(Qt::SizeAllCursor);
  
   //setBackgroundRole(QPalette::Base);
   //setAttribute(Qt::WA_NoSystemBackground);
   //setAttribute(Qt::WA_ContentsPropagated); 
   //setAttribute(Qt::WA_OpaquePaintEvent);
   
   //setMaskRegion();
}


//VFrame::~VFrame()
//{

//}

void VFrame::paintEvent(QPaintEvent * event)
{
   QPainter painter(this);
   
   //painter.setBrush(Qt::NoBrush);
   QPen pen = QPen(Qt::lightGray);
   pen.setWidth(4);
   painter.setPen(pen);
   
   painter.drawRect(this->contentsRect());

}

void VFrame::setMaskRegion()
{  
   QRect rect = this->contentsRect();
   QRegion reg1(rect);
   rect.adjust(2, 2, -2, -2);
   QRegion reg2(rect);
   
   reg1 -= reg2;
      
   this->setMask(reg1);
}

void VFrame::mousePressEvent(QMouseEvent *event)
{
   if (event->button() == Qt::LeftButton) {
      
      fMousePos = event->pos();
      fParentMousePos = mapToParent(fMousePos);

      fMouseMovable = true;                         
   }
}
 
void VFrame::mouseMoveEvent(QMouseEvent *event)
{
   
   if (fMouseMovable){
   
      QPoint parentPos = mapToParent(event->pos());
      
      QPoint d = fParentMousePos - parentPos;
      
      //scroll(d.x(), d.y());
      setGeometry(fParentMousePos.x() - d.x() - fMousePos.x(),
                  fParentMousePos.y() - d.y() - fMousePos.y(),
                  width(), height());
      
      emit changed(geometry());           
   }
}

void VFrame::mouseReleaseEvent(QMouseEvent *event)
{
   if (event->button() == Qt::LeftButton) {
      fMouseMovable = false;
   }   
}