bool CGUIModalScreen::isVisible() const
{
// any parent invisible?
IGUIElement * parentElement = getParent();
while ( parentElement )
{
if ( !parentElement->isVisible() )
return false;
parentElement = parentElement->getParent();
}
// if we have no children then the modal is probably abused as a way to block input
if ( Children.empty() )
{
return IGUIElement::isVisible();
}
// any child visible?
bool visible = false;
core::list<IGUIElement*>::ConstIterator it = Children.begin();
for (; it != Children.end(); ++it)
{
if ( (*it)->isVisible() )
{
visible = true;
break;
}
}
return visible;
}
/*
Function hasModalDialog() checks if we currently have a modal dialog open.
*/
bool hasModalDialog()
{
IGUIEnvironment* env = Device->getGUIEnvironment();
IGUIElement * focused = env->getFocus();
while ( focused )
{
if ( focused->isVisible() && focused->hasType(EGUIET_MODAL_SCREEN) )
return true;
focused = focused->getParent();
}
return false;
}
/*
Handle key-up events
*/
bool OnKeyUp(irr::EKEY_CODE keyCode)
{
// Don't handle keys if we have a modal dialog open as it would lead
// to unexpected application behaviour for the user.
if ( hasModalDialog() )
return false;
if (keyCode == irr::KEY_ESCAPE)
{
if (Device)
{
scene::ICameraSceneNode * camera =
Device->getSceneManager()->getActiveCamera();
if (camera)
{
camera->setInputReceiverEnabled( !camera->isInputReceiverEnabled() );
}
return true;
}
}
else if (keyCode == irr::KEY_F1)
{
if (Device)
{
IGUIElement* elem = Device->getGUIEnvironment()->getRootGUIElement()->getElementFromId(GUI_ID_POSITION_TEXT);
if (elem)
elem->setVisible(!elem->isVisible());
}
}
else if (keyCode == irr::KEY_KEY_M)
{
if (Device)
Device->minimizeWindow();
}
else if (keyCode == irr::KEY_KEY_L)
{
UseLight=!UseLight;
if (Model)
{
Model->setMaterialFlag(video::EMF_LIGHTING, UseLight);
Model->setMaterialFlag(video::EMF_NORMALIZE_NORMALS, UseLight);
}
}
return false;
}
/*
Handle key-up events
*/
bool OnKeyUp(irr::EKEY_CODE keyCode)
{
if (keyCode == irr::KEY_ESCAPE)
{
if (Device)
{
scene::ICameraSceneNode * camera =
Device->getSceneManager()->getActiveCamera();
if (camera)
{
camera->setInputReceiverEnabled( !camera->isInputReceiverEnabled() );
}
return true;
}
}
else if (keyCode == irr::KEY_F1)
{
if (Device)
{
IGUIElement* elem = Device->getGUIEnvironment()->getRootGUIElement()->getElementFromId(GUI_ID_POSITION_TEXT);
if (elem)
elem->setVisible(!elem->isVisible());
}
}
else if (keyCode == irr::KEY_KEY_M)
{
if (Device)
Device->minimizeWindow();
}
else if (keyCode == irr::KEY_KEY_L)
{
UseLight=!UseLight;
if (Model)
{
Model->setMaterialFlag(video::EMF_LIGHTING, UseLight);
Model->setMaterialFlag(video::EMF_NORMALIZE_NORMALS, UseLight);
}
}
return false;
}