I am referring to the most recent version of cocos2d-x (2.1.3).
I think there is a bug in CCScrollView. If you tap the scroll view with 2 fingers
CCScrollView::ccTouchMoved() is called and the following code is being executed:
else if (m_pTouches->count() == 2 && !m_bDragging)
const float len = ccpDistance(m_pContainer->convertTouchToNodeSpace((CCTouch*)m_pTouches->objectAtIndex(0)), m_pContainer->convertTouchToNodeSpace((CCTouch*)m_pTouches->objectAtIndex(1)));
So I assume that the view should be zoomed in when performing a pinch, right? Or what is the purpose of this?
CCScrollView::setZoomScale() the following line does the scaling:
m_pContainer->setScale(MAX(m_fMinScale, MIN(m_fMaxScale, s)));
The problem is:
m_fMaxScale are class members that are not accessible from the outside, and in
initWithViewSize() they are set to 1.0f. They never change their value:
m_fMinScale = m_fMaxScale = 1.0f; (line 122)
This is an issue in our game because we scale down our instance of the Scroll View from the outside (let’s say the container’s scale factor is 0.8). If you then tap the view with 2 fingers the scroll view’s container is always scaled up to 1.0. And it can never scale down again.
Is this a bug? I would like to find a solution for this but I am not sure about the desired behavior of the Scroll View (why would you want to zoom into a scroll view anyway?), and the purpose of these class members
m_fMaxScale if you cannot change their value.
I’d appreciate any response! Thanks in advance!