C++ LLToast类代码示例

	// removes all toasts from a channel
	virtual void		removeToastsFromChannel() 
	{
		for(std::vector<LLToast*>::iterator it = m_active_toasts.begin(); it != m_active_toasts.end(); ++it)
		{
			LLToast* toast = (*it);
			toast->setVisible(FALSE);
			toast->stopTimer();
			m_toast_pool.push_back(toast);

		}
		m_active_toasts.clear();
	};

//--------------------------------------------------------------------------
void LLScreenChannel::removeStoredToastByNotificationID(LLUUID id)
{
	// *TODO: may be remove this function
	std::vector<ToastElem>::iterator it = find(mStoredToastList.begin(), mStoredToastList.end(), id);

	if( it == mStoredToastList.end() )
		return;

	LLToast* toast = (*it).toast;
	mStoredToastList.erase(it);
	mRejectToastSignal(toast->getNotificationID());
}

//--------------------------------------------------------------------------
void LLScreenChannel::killToastByNotificationID(LLUUID id)
{
	// searching among toasts on a screen
	std::vector<ToastElem>::iterator it = find(mToastList.begin(), mToastList.end(), id);
	
	if( it != mToastList.end())
	{
		LLToast* toast = it->getToast();
		// if it is a notification toast and notification is UnResponded - then respond on it
		// else - simply destroy a toast
		//
		// NOTE:	if a notification is unresponded this function will be called twice for the same toast.
		//			At first, the notification will be discarded, at second (it will be caused by discarding),
		//			the toast will be destroyed.
		if(toast && toast->isNotificationValid())
		{
			mRejectToastSignal(toast->getNotificationID());
		}
		else
		{

			deleteToast(toast);
			mToastList.erase(it);
			redrawToasts();
		}
		return;
	}

	// searching among stored toasts
	it = find(mStoredToastList.begin(), mStoredToastList.end(), id);

	if (it != mStoredToastList.end())
	{
		LLToast* toast = it->getToast();
		if (toast)
		{
			// send signal to a listener to let him perform some action on toast rejecting
			mRejectToastSignal(toast->getNotificationID());
			deleteToast(toast);
		}
	}

	// Call find() once more, because the mStoredToastList could have been changed
	// in mRejectToastSignal callback and the iterator could have become invalid.
	it = find(mStoredToastList.begin(), mStoredToastList.end(), id);
	if (it != mStoredToastList.end())
	{
		mStoredToastList.erase(it);
	}

}

//--------------------------------------------------------------------------
void LLScreenChannel::hideToastsFromScreen()
{
	for(std::vector<ToastElem>::iterator it = mToastList.begin(); it != mToastList.end(); it++)
	{
		LLToast* toast = it->getToast();
		if (toast)
		{
			toast->setVisible(FALSE);
		}
		else
		{
			llwarns << "Attempt to hide a deleted toast." << llendl;
		}
	}
}

void LLScreenChannel::closeHiddenToasts(const Matcher& matcher)
{
	// since we can't guarantee that close toast operation doesn't change mToastList
	// we collect matched toasts that should be closed into separate list
	std::list<LLToast*> toasts;
	for (std::vector<ToastElem>::iterator it = mToastList.begin(); it
			!= mToastList.end(); it++)
	{
		LLToast* toast = it->getToast();
		// add to list valid toast that match to provided matcher criteria
		if (toast != NULL && !toast->isDead() && toast->getNotification() != NULL
				&& !toast->getVisible() && matcher.matches(toast->getNotification()))
		{
			toasts.push_back(toast);
		}
	}

	// close collected toasts
	for (std::list<LLToast*>::iterator it = toasts.begin(); it
			!= toasts.end(); it++)
	{
		LLToast* toast = *it;
		toast->closeFloater();
	}
}

void LLNearbyChatScreenChannel::updateSize(LLRect old_world_rect, LLRect new_world_rect)
{
	for(toast_vec_t::iterator it = m_active_toasts.begin(); it != m_active_toasts.end(); ++it)
	{
		LLToast* toast = it->get();

		if (toast)
		{
			LLNearbyChatToastPanel* panel = dynamic_cast<LLNearbyChatToastPanel*>(toast->getPanel());

			if(panel)
			{
				reshapePanel(panel);
				toast->reshapeToPanel();
			}
		}
	}
	arrangeToasts();
}

void LLNearbyChatScreenChannel::showToastsBottom()
{
	if(mStopProcessing)
		return;

	LLRect	toast_rect;	
	updateBottom();
	S32 channel_bottom = getRect().mBottom;

	S32		bottom = channel_bottom;
	S32		margin = gSavedSettings.getS32("ToastGap");

	//sort active toasts
	std::sort(m_active_toasts.begin(),m_active_toasts.end(),sort_toasts_predicate);

	//calc max visible item and hide other toasts.

	for(toast_vec_t::iterator it = m_active_toasts.begin(); it != m_active_toasts.end(); ++it)
	{
		LLToast* toast = it->get();
		if (!toast)
		{
			llwarns << "NULL found in the active chat toasts list!" << llendl;
			continue;
		}

		S32 toast_top = bottom + toast->getRect().getHeight() + margin;

		if(toast_top > gFloaterView->getRect().getHeight())
		{
			while(it!=m_active_toasts.end())
			{
				addToToastPool(it->get());
				it=m_active_toasts.erase(it);
			}
			break;
		}

		toast_rect = toast->getRect();
		toast_rect.setLeftTopAndSize(getRect().mLeft , bottom + toast_rect.getHeight(), toast_rect.getWidth() ,toast_rect.getHeight());

		toast->setRect(toast_rect);
		bottom += toast_rect.getHeight() - toast->getTopPad() + margin;
	}
	
	// use reverse order to provide correct z-order and avoid toast blinking
	
	for(toast_vec_t::reverse_iterator it = m_active_toasts.rbegin(); it != m_active_toasts.rend(); ++it)
	{
		LLToast* toast = it->get();
		if (toast)
	{
		toast->setIsHidden(false);
		toast->setVisible(TRUE);
		}
	}

	}

bool	LLNearbyChatScreenChannel::createPoolToast()
{
	LLToastPanelBase* panel= m_create_toast_panel_callback_t();
	if(!panel)
		return false;
	
	LLToast::Params p;
	p.panel = panel;
	p.lifetime_secs = gSavedSettings.getS32("NearbyToastLifeTime");
	p.fading_time_secs = gSavedSettings.getS32("NearbyToastFadingTime");

	LLToast* toast = new LLNearbyChatToast(p, this);
	
	
	toast->setOnFadeCallback(boost::bind(&LLNearbyChatScreenChannel::onToastFade, this, _1));

	LL_DEBUGS("NearbyChat") << "Creating and pooling toast" << llendl;	
	m_toast_pool.push_back(toast->getHandle());
	return true;
}

bool	LLNearbyChatScreenChannel::createPoolToast()
{
	LLToastPanelBase* panel= m_create_toast_panel_callback_t();
	if(!panel)
		return false;
	
	LLToast::Params p;
	p.panel = panel;
	p.lifetime_secs = gSavedSettings.getS32("NearbyToastLifeTime");
	p.fading_time_secs = gSavedSettings.getS32("NearbyToastFadingTime");

	LLToast* toast = new LLToast(p); 
	
	
	toast->setOnFadeCallback(boost::bind(&LLNearbyChatScreenChannel::onToastFade, this, _1));
	toast->setOnToastDestroyedCallback(boost::bind(&LLNearbyChatScreenChannel::onToastDestroyed, this, _1));
	
	m_toast_pool.push_back(toast);
	return true;
}

//--------------------------------------------------------------------------
void LLScreenChannel::loadStoredToastsToChannel()
{
	std::vector<ToastElem>::iterator it;

	if(mStoredToastList.size() == 0)
		return;

	for(it = mStoredToastList.begin(); it != mStoredToastList.end(); ++it)
	{
		LLToast* toast = it->getToast();
		if (toast)
		{
			toast->setIsHidden(false);
			toast->startTimer();
			mToastList.push_back(*it);
		}
	}

	mStoredToastList.clear();
	redrawToasts();
}

//--------------------------------------------------------------------------
void LLScreenChannel::showToastsCentre()
{
	LLToast* toast = mToastList[0].getToast();
	if (!toast)
	{
		llwarns << "Attempt to display a deleted toast." << llendl;
		return;
	}

	LLRect	toast_rect;
	S32		bottom = (getRect().mTop - getRect().mBottom)/2 + toast->getRect().getHeight()/2;
	std::vector<ToastElem>::reverse_iterator it;

	for(it = mToastList.rbegin(); it != mToastList.rend(); ++it)
	{
		LLToast* toast = it->getToast();
		if (!toast)
		{
			llwarns << "Attempt to display a deleted toast." << llendl;
			return;
		}

		toast_rect = toast->getRect();
		toast_rect.setLeftTopAndSize(getRect().mLeft - toast_rect.getWidth() / 2, bottom + toast_rect.getHeight() / 2 + gSavedSettings.getS32("ToastGap"), toast_rect.getWidth() ,toast_rect.getHeight());
		toast->setRect(toast_rect);

		toast->setVisible(TRUE);
	}
}

bool	LLNearbyChatScreenChannel::createPoolToast()
{
	LLToastPanelBase* panel= m_create_toast_panel_callback_t();
	if(!panel)
		return false;
	
	LLToast::Params p;
	p.panel = panel;
	p.lifetime_secs = gSavedSettings.getS32("NearbyToastLifeTime");
	p.fading_time_secs = gSavedSettings.getS32("NearbyToastFadingTime");

	LLToast* toast = new LLNearbyChatToast(p, this);
	reshapePanel(panel);
	
	toast->setOnFadeCallback(boost::bind(&LLNearbyChatScreenChannel::onToastFade, this, _1));

	// If the toast gets somehow prematurely destroyed, deactivate it to prevent crash (STORM-1352).
	toast->setOnToastDestroyedCallback(boost::bind(&LLNearbyChatScreenChannel::onToastDestroyed, this, _1, false));

	LL_DEBUGS("NearbyChat") << "Creating and pooling toast" << llendl;	
	m_toast_pool.push_back(toast->getHandle());
	return true;
}

//--------------------------------------------------------------------------
void LLScreenChannel::addToast(const LLToast::Params& p)
{
	bool store_toast = false, show_toast = false;

	mDisplayToastsAlways ? show_toast = true : show_toast = mWasStartUpToastShown && (mShowToasts || p.force_show);
	store_toast = !show_toast && p.can_be_stored && mCanStoreToasts;

	if(!show_toast && !store_toast)
	{
		mRejectToastSignal(p.notif_id);
		return;
	}

	LLToast* toast = new LLToast(p);
	ToastElem new_toast_elem(toast->getHandle());

	toast->setOnFadeCallback(boost::bind(&LLScreenChannel::onToastFade, this, _1));
	toast->setOnToastDestroyedCallback(boost::bind(&LLScreenChannel::onToastDestroyed, this, _1));
	if(mControlHovering)
	{
		toast->setOnToastHoverCallback(boost::bind(&LLScreenChannel::onToastHover, this, _1, _2));
		toast->setMouseEnterCallback(boost::bind(&LLScreenChannel::stopToastTimer, this, toast));
		toast->setMouseLeaveCallback(boost::bind(&LLScreenChannel::startToastTimer, this, toast));
	}
	
	if(show_toast)
	{
		mToastList.push_back(new_toast_elem);
		if(p.can_be_stored)
		{
			// store toasts immediately - EXT-3762
			storeToast(new_toast_elem);
		}
		updateShowToastsState();
		redrawToasts();
	}	
	else // store_toast
	{
		mHiddenToastsNum++;
		storeToast(new_toast_elem);
	}
}

void LLNearbyChatScreenChannel::showToastsBottom()
{
	if(mStopProcessing)
		return;

	LLRect	toast_rect;	
	S32		bottom = getRect().mBottom;
	S32		margin = gSavedSettings.getS32("ToastGap");

	for(std::vector<LLToast*>::iterator it = m_active_toasts.begin(); it != m_active_toasts.end(); ++it)
	{
		LLToast* toast = (*it);
		S32 toast_top = bottom + toast->getRect().getHeight() + margin;

		if(toast_top > gFloaterView->getRect().getHeight())
		{
			while(it!=m_active_toasts.end())
			{
				toast->setVisible(FALSE);
				toast->stopTimer();
				m_toast_pool.push_back(toast);
				it=m_active_toasts.erase(it);
			}
			break;
		}
		bottom = toast_top - toast->getTopPad();
	}

	// use reverse order to provide correct z-order and avoid toast blinking
	for(std::vector<LLToast*>::reverse_iterator it = m_active_toasts.rbegin(); it != m_active_toasts.rend(); ++it)
	{
		LLToast* toast = (*it);
		S32 toast_top = bottom + toast->getTopPad();

		toast_rect = toast->getRect();
		toast_rect.setLeftTopAndSize(getRect().mLeft , toast_top, toast_rect.getWidth() ,toast_rect.getHeight());

		toast->setRect(toast_rect);
		toast->setIsHidden(false);
		toast->setVisible(TRUE);

		bottom = toast->getRect().mBottom - margin;
	}
}

void LLNearbyChatScreenChannel::addNotification(LLSD& notification)
{
	//look in pool. if there is any message
	if(mStopProcessing)
		return;

	/*
    find last toast and check ID
	*/

	if(m_active_toasts.size())
	{
		LLUUID fromID = notification["from_id"].asUUID();		// agent id or object id
		std::string from = notification["from"].asString();
		LLToast* toast = m_active_toasts[0];
		LLNearbyChatToastPanel* panel = dynamic_cast<LLNearbyChatToastPanel*>(toast->getPanel());

		if(panel && panel->messageID() == fromID && panel->getFromName() == from && panel->canAddText())
		{
			panel->addMessage(notification);
			toast->reshapeToPanel();
			toast->resetTimer();
	
			arrangeToasts();
			return;
		}
	}
	

	
	if(m_toast_pool.empty())
	{
		//"pool" is empty - create one more panel
		if(!createPoolToast())//created toast will go to pool. so next call will find it
			return;
		addNotification(notification);
		return;
	}

	int chat_type = notification["chat_type"].asInteger();
	
	if( ((EChatType)chat_type == CHAT_TYPE_DEBUG_MSG))
	{
		if(gSavedSettings.getBOOL("ShowScriptErrors") == FALSE) 
			return;
		if(gSavedSettings.getS32("ShowScriptErrorsLocation")== 1)
			return;
	}
		

	//take 1st element from pool, (re)initialize it, put it in active toasts

	LLToast* toast = m_toast_pool.back();

	m_toast_pool.pop_back();


	LLToastPanelBase* panel = dynamic_cast<LLToastPanelBase*>(toast->getPanel());
	if(!panel)
		return;
	panel->init(notification);

	toast->reshapeToPanel();
	toast->resetTimer();
	
	m_active_toasts.insert(m_active_toasts.begin(),toast);

	arrangeToasts();
}