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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#include "precompiled_sd.hxx"
#include "controller/SlsAnimator.hxx"
#include "view/SlideSorterView.hxx"
#include "View.hxx"
namespace sd { namespace slidesorter { namespace controller {
namespace {
static const sal_Int32 gnResolution = 25;
}
/** Handle one animation function by using a timer for frequent calls to
the animations operator().
*/
class Animator::Animation
{
public:
Animation (
const Animator::AnimationFunction& rAnimation,
const double nDelta);
~Animation (void);
bool Run (void);
bool IsExpired (void);
Animator::AnimationFunction maAnimation;
double mnValue;
double mnDelta;
};
class Animator::DrawLock
{
public:
DrawLock (View& rView);
~DrawLock (void);
private:
View& mrView;
};
Animator::Animator (SlideSorter& rSlideSorter)
: mrSlideSorter(rSlideSorter),
maTimer(),
maAnimations(),
mpDrawLock()
{
maTimer.SetTimeout(gnResolution);
maTimer.SetTimeoutHdl(LINK(this,Animator,TimeoutHandler));
}
Animator::~Animator (void)
{
maTimer.Stop();
mpDrawLock.reset();
}
void Animator::AddAnimation (
const AnimationFunction& rAnimation,
const sal_Int32 nDuration)
{
const double nDelta = double(gnResolution) / double(nDuration);
maAnimations.push_back(boost::shared_ptr<Animation>(new Animation(rAnimation, nDelta)));
// Prevent redraws except for the ones in TimeoutHandler.
// While the Animator is active it will schedule repaints regularly.
// Repaints in between would only lead to visual artifacts.
mpDrawLock.reset(new DrawLock(mrSlideSorter.GetView()));
maTimer.Start();
}
bool Animator::ServeAnimations (void)
{
bool bExpired (false);
AnimationList aCopy (maAnimations);
AnimationList::const_iterator iAnimation;
for (iAnimation=aCopy.begin(); iAnimation!=aCopy.end(); ++iAnimation)
{
bExpired |= (*iAnimation)->Run();
}
return bExpired;
}
void Animator::CleanUpAnimationList (void)
{
AnimationList aActiveAnimations;
AnimationList::const_iterator iAnimation;
for (iAnimation=maAnimations.begin(); iAnimation!=maAnimations.end(); ++iAnimation)
{
if ( ! (*iAnimation)->IsExpired())
aActiveAnimations.push_back(*iAnimation);
}
maAnimations.swap(aActiveAnimations);
}
IMPL_LINK(Animator, TimeoutHandler, Timer*, EMPTYARG)
{
if (ServeAnimations())
CleanUpAnimationList();
// Unlock the draw lock. This should lead to a repaint.
mpDrawLock.reset();
if (maAnimations.size() > 0)
{
mpDrawLock.reset(new DrawLock(mrSlideSorter.GetView()));
maTimer.Start();
}
return 0;
}
//===== Animator::Animation ===================================================
Animator::Animation::Animation (
const Animator::AnimationFunction& rAnimation,
const double nDelta)
: maAnimation(rAnimation),
mnValue(0),
mnDelta(nDelta)
{
maAnimation(mnValue);
mnValue = mnDelta;
}
Animator::Animation::~Animation (void)
{
}
bool Animator::Animation::Run (void)
{
if (mnValue < 1.0)
{
maAnimation(mnValue);
mnValue += mnDelta;
return false;
}
else
{
maAnimation(1.0);
return true;
}
}
bool Animator::Animation::IsExpired (void)
{
return mnValue >= 1.0;
}
//===== Animator::DrawLock ====================================================
Animator::DrawLock::DrawLock (View& rView)
: mrView(rView)
{
mrView.LockRedraw(TRUE);
}
Animator::DrawLock::~DrawLock (void)
{
mrView.LockRedraw(FALSE);
}
} } } // end of namespace ::sd::slidesorter::controller
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