World View Zooming factor

[Kaatja]

Hello,

I firstly would like to introduce myself to you sinds I am a new comer in this discussion board. My name is Kaatja and am a software developer for a company in europe.

Now back to the business. We use QT-tookit in order to develope our GUI with it. But the programming language is C++. I am at this time busy making a world view interface(just like Google earth) see the below image.



As i marked the small view at the right bottom corner of the view, I have also the same small view which has some drawing objects in it. And a big view which has also the same drawing objects as the small one.

When I select some area in the small view OnMouseRelease, I tend to zoom the same selected area in the bigger view. Can someone please give any idea how can I achieve this?

I have tried it myself too, and this is the code:

//class WorldView (the small view) 
void WorldView::mouseReleaseEvent(QMouseEvent *e)
{
	
	dScale2 = 2.0;
	m_WorldViewSelect = false;
	
	int x = 0;
	int y = 0;
		
	if ( m_bSelect )
	{
		//The selected area draws in the form of rectangle
		SetSelect(0,0,0,0);
		m_Select = m_Select.normalize();
			
		m_bSelect = false;
		x = -( m_Dev.Left() - ((m_Select.left() + m_Select.right())  / 2) );
		y = -( m_Dev.Top()  - ((m_Select.top()  + m_Select.bottom()) / 2) );
		
		QRect R = rect();
			
		XFactor = (double)R.width()  / (double)m_Select.width();
		YFactor = (double)R.height() / (double)m_Select.height();
		
		if (XFactor > YFactor)
			dScale2 = YFactor;
		else
			dScale2 = XFactor;

		if (m_pOtherView->View()) 
		{
			// if the other view the selected rectangle should be drawn in to the other view en aftwewards that selected area should be zoomed in
			
			m_Zoomed = true;
			m_pOtherView->View()->SetSelect(m_Select.x(), m_Select.y(), 
							m_Select.width(), m_Select.height());
			
				m_pOtherView->View()->mouseReleaseEvent(e); 
			
			// After doing this, the zoomfactor for the other view is not correct and the selected area(Rectangle) is not been drown in the good position.

		}	
			
	}
}

Thank you!

Kaatja