bool UIWidget::propagateOnMousePress(const Point& mousePos, Fw::MouseButton button)
{
// do a backup of children list, because it may change while looping it
UIWidgetPtr clickedChild;
for(const UIWidgetPtr& child : m_children) {
// events on hidden or disabled widgets are discarded
if(!child->isExplicitlyEnabled() || !child->isExplicitlyVisible())
continue;
// mouse press events only go to children that contains the mouse position
if(child->containsPoint(mousePos) && child == getChildByPos(mousePos)) {
clickedChild = child;
break;
}
}
if(clickedChild) {
// focusable child gains focus when clicked
if(clickedChild->isFocusable())
focusChild(clickedChild, Fw::MouseFocusReason);
// stop propagating if the child accept the event
if(clickedChild->propagateOnMousePress(mousePos, button))
return true;
}
// only non phatom widgets receives mouse press events
if(!isPhantom()) {
bool ret = onMousePress(mousePos, button);
if(button == Fw::MouseLeftButton && !isPressed())
setPressed(true);
return ret;
}
return false;
}
