diff options
Diffstat (limited to '')
| -rw-r--r-- | slideshow/source/engine/animationnodes/animationbasenode.cxx | 494 |
1 files changed, 494 insertions, 0 deletions
diff --git a/slideshow/source/engine/animationnodes/animationbasenode.cxx b/slideshow/source/engine/animationnodes/animationbasenode.cxx new file mode 100644 index 000000000..1a15bf2de --- /dev/null +++ b/slideshow/source/engine/animationnodes/animationbasenode.cxx @@ -0,0 +1,494 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * 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 . + */ + + +#include <sal/log.hxx> +#include <com/sun/star/presentation/ParagraphTarget.hpp> +#include <com/sun/star/animations/Timing.hpp> +#include <com/sun/star/animations/AnimationAdditiveMode.hpp> +#include <com/sun/star/presentation/ShapeAnimationSubType.hpp> + +#include "nodetools.hxx" +#include <doctreenode.hxx> +#include "animationbasenode.hxx" +#include <delayevent.hxx> +#include <framerate.hxx> + +#include <optional> +#include <algorithm> + +using namespace com::sun::star; + +namespace slideshow::internal { + +AnimationBaseNode::AnimationBaseNode( + const uno::Reference< animations::XAnimationNode >& xNode, + const BaseContainerNodeSharedPtr& rParent, + const NodeContext& rContext ) + : BaseNode( xNode, rParent, rContext ), + mxAnimateNode( xNode, uno::UNO_QUERY_THROW ), + maAttributeLayerHolder(), + maSlideSize( rContext.maSlideSize ), + mpShape(), + mpShapeSubset(), + mpSubsetManager(rContext.maContext.mpSubsettableShapeManager), + mbPreservedVisibility(true), + mbIsIndependentSubset( rContext.mbIsIndependentSubset ), + mpActivity() +{ + // extract native node targets + // =========================== + + // plain shape target + uno::Reference< drawing::XShape > xShape( mxAnimateNode->getTarget(), + uno::UNO_QUERY ); + + // distinguish 5 cases: + + // - plain shape target + // (NodeContext.mpMasterShapeSubset full set) + + // - parent-generated subset (generate an + // independent subset) + + // - parent-generated subset from iteration + // (generate a dependent subset) + + // - XShape target at the XAnimatioNode (generate + // a plain shape target) + + // - ParagraphTarget target at the XAnimationNode + // (generate an independent shape subset) + if( rContext.mpMasterShapeSubset ) + { + if( rContext.mpMasterShapeSubset->isFullSet() ) + { + // case 1: plain shape target from parent + mpShape = rContext.mpMasterShapeSubset->getSubsetShape(); + } + else + { + // cases 2 & 3: subset shape + mpShapeSubset = rContext.mpMasterShapeSubset; + } + } + else + { + // no parent-provided shape, try to extract + // from XAnimationNode - cases 4 and 5 + + if( xShape.is() ) + { + mpShape = lookupAttributableShape( getContext().mpSubsettableShapeManager, + xShape ); + } + else + { + // no shape provided. Maybe a ParagraphTarget? + presentation::ParagraphTarget aTarget; + + if( !(mxAnimateNode->getTarget() >>= aTarget) ) + ENSURE_OR_THROW( + false, "could not extract any target information" ); + + xShape = aTarget.Shape; + + ENSURE_OR_THROW( xShape.is(), "invalid shape in ParagraphTarget" ); + + mpShape = lookupAttributableShape( getContext().mpSubsettableShapeManager, + xShape ); + + // NOTE: For shapes with ParagraphTarget, we ignore + // the SubItem property. We implicitly assume that it + // is set to ONLY_TEXT. + OSL_ENSURE( + mxAnimateNode->getSubItem() == + presentation::ShapeAnimationSubType::ONLY_TEXT || + mxAnimateNode->getSubItem() == + presentation::ShapeAnimationSubType::AS_WHOLE, + "ParagraphTarget given, but subitem not AS_TEXT or AS_WHOLE? " + "Make up your mind, I'll ignore the subitem." ); + + // okay, found a ParagraphTarget with a valid XShape. Does the shape + // provide the given paragraph? + if( aTarget.Paragraph >= 0 && + mpShape->getTreeNodeSupplier().getNumberOfTreeNodes( + DocTreeNode::NodeType::LogicalParagraph) > aTarget.Paragraph ) + { + const DocTreeNode& rTreeNode( + mpShape->getTreeNodeSupplier().getTreeNode( + aTarget.Paragraph, + DocTreeNode::NodeType::LogicalParagraph ) ); + + // CAUTION: the creation of the subset shape + // _must_ stay in the node constructor, since + // Slide::prefetchShow() initializes shape + // attributes right after animation import (or + // the Slide class must be changed). + mpShapeSubset = + std::make_shared<ShapeSubset>( mpShape, + rTreeNode, + mpSubsetManager ); + + // Override NodeContext, and flag this node as + // a special independent subset one. This is + // important when applying initial attributes: + // independent shape subsets must be setup + // when the slide starts, since they, as their + // name suggest, can have state independent to + // the master shape. The following example + // might illustrate that: a master shape has + // no effect, one of the text paragraphs + // within it has an appear effect. Now, the + // respective paragraph must be invisible when + // the slide is initially shown, and become + // visible only when the effect starts. + mbIsIndependentSubset = true; + + // already enable subset right here, the + // setup of initial shape attributes of + // course needs the subset shape + // generated, to apply e.g. visibility + // changes. + mpShapeSubset->enableSubsetShape(); + } + } + } +} + +void AnimationBaseNode::dispose() +{ + if (mpActivity) { + mpActivity->dispose(); + mpActivity.reset(); + } + + maAttributeLayerHolder.reset(); + mxAnimateNode.clear(); + mpShape.reset(); + mpShapeSubset.reset(); + + BaseNode::dispose(); +} + +bool AnimationBaseNode::init_st() +{ + // if we've still got an old activity lying around, dispose it: + if (mpActivity) { + mpActivity->dispose(); + mpActivity.reset(); + } + + // note: actually disposing the activity too early might cause problems, + // because on dequeued() it calls endAnimation(pAnim->end()), thus ending + // animation _after_ last screen update. + // review that end() is properly called (which calls endAnimation(), too). + + try { + // TODO(F2): For restart functionality, we must regenerate activities, + // since they are not able to reset their state (or implement _that_) + mpActivity = createActivity(); + } + catch (uno::Exception const&) { + TOOLS_WARN_EXCEPTION( "slideshow", "" ); + // catch and ignore. We later handle empty activities, but for + // other nodes to function properly, the core functionality of + // this node must remain up and running. + } + return true; +} + +bool AnimationBaseNode::resolve_st() +{ + // enable shape subset for automatically generated + // subsets. Independent subsets are already setup + // during construction time. Doing it only here + // saves us a lot of sprites and shapes lying + // around. This is especially important for + // character-wise iterations, since the shape + // content (e.g. thousands of characters) would + // otherwise be painted character-by-character. + if (isDependentSubsettedShape() && mpShapeSubset) { + mpShapeSubset->enableSubsetShape(); + } + return true; +} + +void AnimationBaseNode::activate_st() +{ + AttributableShapeSharedPtr const pShape(getShape()); + mbPreservedVisibility = pShape->isVisible(); + + // create new attribute layer + maAttributeLayerHolder.createAttributeLayer(pShape); + + ENSURE_OR_THROW( maAttributeLayerHolder.get(), + "Could not generate shape attribute layer" ); + + // TODO(Q2): This affects the way mpActivity + // works, but is performed here because of + // locality (we're fiddling with the additive mode + // here, anyway, and it's the only place where we + // do). OTOH, maybe the complete additive mode + // setup should be moved to the activities. + + // for simple by-animations, the SMIL spec + // requires us to emulate "0,by-value" value list + // behaviour, with additive mode forced to "sum", + // no matter what the input is + // (http://www.w3.org/TR/smil20/animation.html#adef-by). + if( mxAnimateNode->getBy().hasValue() && + !mxAnimateNode->getTo().hasValue() && + !mxAnimateNode->getFrom().hasValue() ) + { + // force attribute mode to REPLACE (note the + // subtle discrepancy to the paragraph above, + // where SMIL requires SUM. This is internally + // handled by the FromToByActivity, and is + // because otherwise DOM values would not be + // handled correctly: the activity cannot + // determine whether an + // Activity::getUnderlyingValue() yields the + // DOM value, or already a summed-up conglomerate) + + // Note that this poses problems with our + // hybrid activity duration (time or min number of frames), + // since if activities + // exceed their duration, wrong 'by' start + // values might arise ('Laser effect') + maAttributeLayerHolder.get()->setAdditiveMode( + animations::AnimationAdditiveMode::REPLACE ); + } + else + { + // apply additive mode to newly created Attribute layer + maAttributeLayerHolder.get()->setAdditiveMode( + mxAnimateNode->getAdditive() ); + } + + // fake normal animation behaviour, even if we + // show nothing. This is the appropriate way to + // handle errors on Activity generation, because + // maybe all other effects on the slide are + // correctly initialized (but won't run, if we + // signal an error here) + if (mpActivity) { + // supply Activity (and the underlying Animation) with + // it's AttributeLayer, to perform the animation on + mpActivity->setTargets( getShape(), maAttributeLayerHolder.get() ); + + // add to activities queue + enqueueActivity(); + } + else { + // Actually, DO generate the event for empty activity, + // to keep the chain of animations running + BaseNode::scheduleDeactivationEvent(); + } +} + +void AnimationBaseNode::deactivate_st( NodeState eDestState ) +{ + if (eDestState == FROZEN && mpActivity) + mpActivity->end(); + + if (isDependentSubsettedShape()) { + // for dependent subsets, remove subset shape + // from layer, re-integrate subsetted part + // back into original shape. For independent + // subsets, we cannot make any assumptions + // about subset attribute state relative to + // master shape, thus, have to keep it. This + // will effectively re-integrate the subsetted + // part into the original shape (whose + // animation will hopefully have ended, too) + + // this statement will save a whole lot of + // sprites for iterated text effects, since + // those sprites will only exist during the + // actual lifetime of the effects + if (mpShapeSubset) { + mpShapeSubset->disableSubsetShape(); + } + } + + if (eDestState != ENDED) + return; + + // no shape anymore, no layer needed: + maAttributeLayerHolder.reset(); + + if (! isDependentSubsettedShape()) { + + // for all other shapes, removing the + // attribute layer quite possibly changes + // shape display. Thus, force update + AttributableShapeSharedPtr const pShape( getShape() ); + + // don't anybody dare to check against + // pShape->isVisible() here, removing the + // attribute layer might actually make the + // shape invisible! + getContext().mpSubsettableShapeManager->notifyShapeUpdate( pShape ); + } + + if (mpActivity) { + // kill activity, if still running + mpActivity->dispose(); + mpActivity.reset(); + } +} + +void AnimationBaseNode::removeEffect() +{ + if (!isDependentSubsettedShape()) { + AttributableShapeSharedPtr const pShape(getShape()); + pShape->setVisibility(!mbPreservedVisibility); + getContext().mpSubsettableShapeManager->notifyShapeUpdate( pShape ); + pShape->setVisibility(mbPreservedVisibility); + } +} + +bool AnimationBaseNode::hasPendingAnimation() const +{ + // TODO(F1): This might not always be true. Are there 'inactive' + // animation nodes? + return true; +} + +bool AnimationBaseNode::enqueueActivity() const +{ + return getContext().mrActivitiesQueue.addActivity( mpActivity ); +} + +#if defined(DBG_UTIL) +void AnimationBaseNode::showState() const +{ + BaseNode::showState(); + + SAL_INFO( "slideshow.verbose", "AnimationBaseNode info: independent subset=" << + (mbIsIndependentSubset ? "y" : "n") ); +} +#endif + +ActivitiesFactory::CommonParameters +AnimationBaseNode::fillCommonParameters() const +{ + double nDuration = 0.0; + + // TODO(F3): Duration/End handling is barely there + if( !(mxAnimateNode->getDuration() >>= nDuration) ) { + mxAnimateNode->getEnd() >>= nDuration; // Wah. + } + + // minimal duration we fallback to (avoid 0 here!) + nDuration = ::std::max( 0.001, nDuration ); + + const bool bAutoReverse( mxAnimateNode->getAutoReverse() ); + + std::optional<double> aRepeats; + double nRepeats = 0; + if( mxAnimateNode->getRepeatCount() >>= nRepeats ) { + aRepeats = nRepeats; + } + else { + if( mxAnimateNode->getRepeatDuration() >>= nRepeats ) { + // when repeatDuration is given, + // autoreverse does _not_ modify the + // active duration. Thus, calc repeat + // count with already adapted simple + // duration (twice the specified duration) + + // convert duration back to repeat counts + if( bAutoReverse ) + aRepeats = nRepeats / (2.0 * nDuration); + else + aRepeats = nRepeats / nDuration; + } + else + { + // no double value for both values - Timing::INDEFINITE? + animations::Timing eTiming; + + if( !(mxAnimateNode->getRepeatDuration() >>= eTiming) || + eTiming != animations::Timing_INDEFINITE ) + { + if( !(mxAnimateNode->getRepeatCount() >>= eTiming) || + eTiming != animations::Timing_INDEFINITE ) + { + // no indefinite timing, no other values given - + // use simple run, i.e. repeat of 1.0 + aRepeats = 1.0; + } + } + } + } + + // calc accel/decel: + double nAcceleration = 0.0; + double nDeceleration = 0.0; + BaseNodeSharedPtr const pSelf( getSelf() ); + for ( std::shared_ptr<BaseNode> pNode( pSelf ); + pNode; pNode = pNode->getParentNode() ) + { + uno::Reference<animations::XAnimationNode> const xAnimationNode( + pNode->getXAnimationNode() ); + nAcceleration = std::max( nAcceleration, + xAnimationNode->getAcceleration() ); + nDeceleration = std::max( nDeceleration, + xAnimationNode->getDecelerate() ); + } + + EventSharedPtr pEndEvent; + if (pSelf) { + pEndEvent = makeEvent( [pSelf] () {pSelf->deactivate(); }, + "AnimationBaseNode::deactivate"); + } + + // Calculate the minimum frame count that depends on the duration and + // the minimum frame count. + const sal_Int32 nMinFrameCount (std::clamp<sal_Int32>( + basegfx::fround(nDuration * FrameRate::MinimumFramesPerSecond), 1, 10)); + + return ActivitiesFactory::CommonParameters( + pEndEvent, + getContext().mrEventQueue, + getContext().mrActivitiesQueue, + nDuration, + nMinFrameCount, + bAutoReverse, + aRepeats, + nAcceleration, + nDeceleration, + getShape(), + getSlideSize()); +} + +AttributableShapeSharedPtr const & AnimationBaseNode::getShape() const +{ + // any subsetting at all? + if (mpShapeSubset) + return mpShapeSubset->getSubsetShape(); + else + return mpShape; // nope, plain shape always +} + +} // namespace slideshow + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |