/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/


// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svx.hxx"
#include <svx/sdr/animation/animationstate.hxx>
#include <tools/debug.hxx>
#include <svx/sdr/contact/viewobjectcontact.hxx>
#include <svx/sdr/animation/objectanimator.hxx>
#include <svx/sdr/contact/objectcontact.hxx>
#include <svx/sdr/contact/viewcontact.hxx>
#include <drawinglayer/primitive2d/animatedprimitive2d.hxx>
#include <drawinglayer/animation/animationtiming.hxx>

//////////////////////////////////////////////////////////////////////////////

namespace sdr
{
	namespace animation
	{
		double PrimitiveAnimation::getSmallestNextTime(double fCurrentTime)
		{
			double fRetval(0.0);

			if(maAnimatedPrimitives.hasElements())
			{
				const sal_Int32 nCount(maAnimatedPrimitives.getLength());

				for(sal_Int32 a(0L); a < nCount; a++)
				{
					const drawinglayer::primitive2d::Primitive2DReference xRef(maAnimatedPrimitives[a]);
					const drawinglayer::primitive2d::AnimatedSwitchPrimitive2D* pCandidate = dynamic_cast< const drawinglayer::primitive2d::AnimatedSwitchPrimitive2D* >(xRef.get());
					OSL_ENSURE(pCandidate, "PrimitiveAnimation::getSmallestNextTime: wrong primitive in animated list (!)");

					if(pCandidate)
					{
						const drawinglayer::animation::AnimationEntry& rAnimEntry = pCandidate->getAnimationEntry();
						const double fNextTime(rAnimEntry.getNextEventTime(fCurrentTime));

						if(!::basegfx::fTools::equalZero(fNextTime))
						{
							if(::basegfx::fTools::equalZero(fRetval))
							{
								fRetval = fNextTime;
							}
							else if(::basegfx::fTools::less(fNextTime, fRetval))
							{
								fRetval = fNextTime;
							}
						}
					}
				}
			}

			return fRetval;
		}

		void PrimitiveAnimation::prepareNextEvent()
		{
			const double fCurrentTime(mrVOContact.GetObjectContact().getPrimitiveAnimator().GetTime());
			const double fNextTime(getSmallestNextTime(fCurrentTime));

			// getSmallestNextTime will be zero when animation ended. If not zero, a next step
			// exists
			if(!::basegfx::fTools::equalZero(fNextTime))
			{
				// next time point exists, use it
				sal_uInt32 nNextTime;
				
				if(fNextTime >= (double)0xffffff00)
				{
					// take care for very late points in time, e.g. when a text animation stops
					// in a defined AnimationEntryFixed with endless (0xffffffff) duration
					nNextTime = GetTime() + (1000 * 60 * 60); // one hour, works with vcl timers, 0xffffff00 was too much...
				}
				else
				{
					nNextTime = (sal_uInt32)fNextTime;
				}

				// ensure step forward in integer timing, the floating step difference maybe smaller than 1.0. Use
				// at least 25ms for next step
				const sal_uInt32 nMinimumStepTime((sal_uInt32)fCurrentTime + 25L);
				
				if(nNextTime <= nMinimumStepTime)
				{
					nNextTime = nMinimumStepTime;
				}

				// set time and reactivate by re-adding to the scheduler
				SetTime(nNextTime);
				mrVOContact.GetObjectContact().getPrimitiveAnimator().InsertEvent(this);
			}
		}

		PrimitiveAnimation::PrimitiveAnimation(sdr::contact::ViewObjectContact& rVOContact, const drawinglayer::primitive2d::Primitive2DSequence& rAnimatedPrimitives)
		:	Event(0L),
			mrVOContact(rVOContact),
			maAnimatedPrimitives(rAnimatedPrimitives)
		{
			// setup initially
			prepareNextEvent();
		}

		PrimitiveAnimation::~PrimitiveAnimation()
		{
			// ensure that Event member is removed from PrimitiveAnimator
			mrVOContact.GetObjectContact().getPrimitiveAnimator().RemoveEvent(this);
		}

		// execute event, from base class Event
		void PrimitiveAnimation::Trigger(sal_uInt32 /*nTime*/)
		{
			// schedule a repaint of associated object
			mrVOContact.ActionChanged();

			// re-setup
			prepareNextEvent();
		}
	} // end of namespace animation
} // end of namespace sdr

//////////////////////////////////////////////////////////////////////////////
// eof