File indexing completed on 2024-05-19 16:34:30

 /*
     KWin - the KDE window manager
     This file is part of the KDE project.
 
     SPDX-FileCopyrightText: 2011 Thomas Lübking <thomas.luebking@web.de>
     SPDX-FileCopyrightText: 2018 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "kwinanimationeffect.h"
 #include "kwinglutils.h"
 #include "anidata_p.h"
 
 #include <QDateTime>
 #include <QTimer>
 #include <QVector3D>
 #include <QtDebug>
 
 namespace KWin
 {
 
 QDebug operator<<(QDebug dbg, const KWin::FPx2 &fpx2)
 {
     dbg.nospace() << fpx2[0] << "," << fpx2[1] << QString(fpx2.isValid() ? QStringLiteral(" (valid)") : QStringLiteral(" (invalid)"));
     return dbg.space();
 }
 
 QElapsedTimer AnimationEffect::s_clock;
 
 class AnimationEffectPrivate
 {
 public:
     AnimationEffectPrivate()
     {
         m_animationsTouched = m_isInitialized = false;
         m_justEndedAnimation = 0;
     }
     AnimationEffect::AniMap m_animations;
     static quint64 m_animCounter;
     quint64 m_justEndedAnimation; // protect against cancel
     QWeakPointer<FullScreenEffectLock> m_fullScreenEffectLock;
     bool m_needSceneRepaint, m_animationsTouched, m_isInitialized;
 };
 
 quint64 AnimationEffectPrivate::m_animCounter = 0;
 
 AnimationEffect::AnimationEffect()
     : CrossFadeEffect()
     , d_ptr(std::make_unique<AnimationEffectPrivate>())
 {
     if (!s_clock.isValid()) {
         s_clock.start();
     }
     /* this is the same as the QTimer::singleShot(0, SLOT(init())) kludge
      * defering the init and esp. the connection to the windowClosed slot */
     QMetaObject::invokeMethod(this, &AnimationEffect::init, Qt::QueuedConnection);
 }
 
 AnimationEffect::~AnimationEffect() = default;
 
 void AnimationEffect::init()
 {
     Q_D(AnimationEffect);
     if (d->m_isInitialized) {
         return; // not more than once, please
     }
     d->m_isInitialized = true;
     /* by connecting the signal from a slot AFTER the inheriting class constructor had the chance to
      * connect it we can provide auto-referencing of animated and closed windows, since at the time
      * our slot will be called, the slot of the subclass has been (SIGNAL/SLOT connections are FIFO)
      * and has pot. started an animation so we have the window in our hash :) */
     connect(effects, &EffectsHandler::windowClosed, this, &AnimationEffect::_windowClosed);
     connect(effects, &EffectsHandler::windowDeleted, this, &AnimationEffect::_windowDeleted);
 }
 
 bool AnimationEffect::isActive() const
 {
     Q_D(const AnimationEffect);
     return !d->m_animations.isEmpty() && !effects->isScreenLocked();
 }
 
 #define RELATIVE_XY(_FIELD_) const bool relative[2] = {static_cast<bool>(metaData(Relative##_FIELD_##X, meta)), \
                                                        static_cast<bool>(metaData(Relative##_FIELD_##Y, meta))}
 
 void AnimationEffect::validate(Attribute a, uint &meta, FPx2 *from, FPx2 *to, const EffectWindow *w) const
 {
     if (a < NonFloatBase) {
         if (a == Scale) {
             QRectF area = effects->clientArea(ScreenArea, w);
             if (from && from->isValid()) {
                 RELATIVE_XY(Source);
                 from->set(relative[0] ? (*from)[0] * area.width() / w->width() : (*from)[0],
                           relative[1] ? (*from)[1] * area.height() / w->height() : (*from)[1]);
             }
             if (to && to->isValid()) {
                 RELATIVE_XY(Target);
                 to->set(relative[0] ? (*to)[0] * area.width() / w->width() : (*to)[0],
                         relative[1] ? (*to)[1] * area.height() / w->height() : (*to)[1]);
             }
         } else if (a == Rotation) {
             if (from && !from->isValid()) {
                 setMetaData(SourceAnchor, metaData(TargetAnchor, meta), meta);
                 from->set(0.0, 0.0);
             }
             if (to && !to->isValid()) {
                 setMetaData(TargetAnchor, metaData(SourceAnchor, meta), meta);
                 to->set(0.0, 0.0);
             }
         }
         if (from && !from->isValid()) {
             from->set(1.0, 1.0);
         }
         if (to && !to->isValid()) {
             to->set(1.0, 1.0);
         }
 
     } else if (a == Position) {
         QRectF area = effects->clientArea(ScreenArea, w);
         QPointF pt = w->frameGeometry().bottomRight(); // cannot be < 0 ;-)
         if (from) {
             if (from->isValid()) {
                 RELATIVE_XY(Source);
                 from->set(relative[0] ? area.x() + (*from)[0] * area.width() : (*from)[0],
                           relative[1] ? area.y() + (*from)[1] * area.height() : (*from)[1]);
             } else {
                 from->set(pt.x(), pt.y());
                 setMetaData(SourceAnchor, AnimationEffect::Bottom | AnimationEffect::Right, meta);
             }
         }
 
         if (to) {
             if (to->isValid()) {
                 RELATIVE_XY(Target);
                 to->set(relative[0] ? area.x() + (*to)[0] * area.width() : (*to)[0],
                         relative[1] ? area.y() + (*to)[1] * area.height() : (*to)[1]);
             } else {
                 to->set(pt.x(), pt.y());
                 setMetaData(TargetAnchor, AnimationEffect::Bottom | AnimationEffect::Right, meta);
             }
         }
 
     } else if (a == Size) {
         QRectF area = effects->clientArea(ScreenArea, w);
         if (from) {
             if (from->isValid()) {
                 RELATIVE_XY(Source);
                 from->set(relative[0] ? (*from)[0] * area.width() : (*from)[0],
                           relative[1] ? (*from)[1] * area.height() : (*from)[1]);
             } else {
                 from->set(w->width(), w->height());
             }
         }
 
         if (to) {
             if (to->isValid()) {
                 RELATIVE_XY(Target);
                 to->set(relative[0] ? (*to)[0] * area.width() : (*to)[0],
                         relative[1] ? (*to)[1] * area.height() : (*to)[1]);
             } else {
                 to->set(w->width(), w->height());
             }
         }
 
     } else if (a == Translation) {
         QRect area = w->rect().toRect();
         if (from) {
             if (from->isValid()) {
                 RELATIVE_XY(Source);
                 from->set(relative[0] ? (*from)[0] * area.width() : (*from)[0],
                           relative[1] ? (*from)[1] * area.height() : (*from)[1]);
             } else {
                 from->set(0.0, 0.0);
             }
         }
 
         if (to) {
             if (to->isValid()) {
                 RELATIVE_XY(Target);
                 to->set(relative[0] ? (*to)[0] * area.width() : (*to)[0],
                         relative[1] ? (*to)[1] * area.height() : (*to)[1]);
             } else {
                 to->set(0.0, 0.0);
             }
         }
 
     } else if (a == Clip) {
         if (from && !from->isValid()) {
             from->set(1.0, 1.0);
             setMetaData(SourceAnchor, metaData(TargetAnchor, meta), meta);
         }
         if (to && !to->isValid()) {
             to->set(1.0, 1.0);
             setMetaData(TargetAnchor, metaData(SourceAnchor, meta), meta);
         }
 
     } else if (a == CrossFadePrevious) {
         if (from && !from->isValid()) {
             from->set(0.0);
         }
         if (to && !to->isValid()) {
             to->set(1.0);
         }
     }
 }
 
 quint64 AnimationEffect::p_animate(EffectWindow *w, Attribute a, uint meta, int ms, FPx2 to, const QEasingCurve &curve, int delay, FPx2 from, bool keepAtTarget, bool fullScreenEffect, bool keepAlive, GLShader *shader)
 {
     const bool waitAtSource = from.isValid();
     validate(a, meta, &from, &to, w);
 
     Q_D(AnimationEffect);
     if (!d->m_isInitialized) {
         init(); // needs to ensure the window gets removed if deleted in the same event cycle
     }
     if (d->m_animations.isEmpty()) {
         connect(effects, &EffectsHandler::windowExpandedGeometryChanged,
                 this, &AnimationEffect::_windowExpandedGeometryChanged);
     }
     AniMap::iterator it = d->m_animations.find(w);
     if (it == d->m_animations.end()) {
         it = d->m_animations.insert(w, QPair<QList<AniData>, QRect>(QList<AniData>(), QRect()));
     }
 
     FullScreenEffectLockPtr fullscreen;
     if (fullScreenEffect) {
         if (d->m_fullScreenEffectLock.isNull()) {
             fullscreen = FullScreenEffectLockPtr::create(this);
             d->m_fullScreenEffectLock = fullscreen.toWeakRef();
         } else {
             fullscreen = d->m_fullScreenEffectLock.toStrongRef();
         }
     }
 
     PreviousWindowPixmapLockPtr previousPixmap;
     if (a == CrossFadePrevious) {
         CrossFadeEffect::redirect(w);
     }
 
     it->first.append(AniData(
         a, // Attribute
         meta, // Metadata
         to, // Target
         delay, // Delay
         from, // Source
         waitAtSource, // Whether the animation should be kept at source
         fullscreen, // Full screen effect lock
         keepAlive, // Keep alive flag
         previousPixmap, // Previous window pixmap lock
         shader
         ));
 
     const quint64 ret_id = ++d->m_animCounter;
     AniData &animation = it->first.last();
     animation.id = ret_id;
 
     animation.visibleRef = EffectWindowVisibleRef(w, EffectWindow::PAINT_DISABLED_BY_MINIMIZE | EffectWindow::PAINT_DISABLED_BY_DESKTOP | EffectWindow::PAINT_DISABLED_BY_DELETE);
     animation.timeLine.setDirection(TimeLine::Forward);
     animation.timeLine.setDuration(std::chrono::milliseconds(ms));
     animation.timeLine.setEasingCurve(curve);
     animation.timeLine.setSourceRedirectMode(TimeLine::RedirectMode::Strict);
     animation.timeLine.setTargetRedirectMode(TimeLine::RedirectMode::Relaxed);
 
     animation.terminationFlags = TerminateAtSource;
     if (!keepAtTarget) {
         animation.terminationFlags |= TerminateAtTarget;
     }
 
     it->second = QRect();
 
     d->m_animationsTouched = true;
 
     if (delay > 0) {
         QTimer::singleShot(delay, this, &AnimationEffect::triggerRepaint);
         const QSize &s = effects->virtualScreenSize();
         if (waitAtSource) {
             w->addLayerRepaint(0, 0, s.width(), s.height());
         }
     } else {
         triggerRepaint();
     }
     if (shader) {
         CrossFadeEffect::redirect(w);
     }
     return ret_id;
 }
 
 bool AnimationEffect::retarget(quint64 animationId, FPx2 newTarget, int newRemainingTime)
 {
     Q_D(AnimationEffect);
     if (animationId == d->m_justEndedAnimation) {
         return false; // this is just ending, do not try to retarget it
     }
     for (AniMap::iterator entry = d->m_animations.begin(),
                           mapEnd = d->m_animations.end();
          entry != mapEnd; ++entry) {
         for (QList<AniData>::iterator anim = entry->first.begin(),
                                       animEnd = entry->first.end();
              anim != animEnd; ++anim) {
             if (anim->id == animationId) {
                 anim->from.set(interpolated(*anim, 0), interpolated(*anim, 1));
                 validate(anim->attribute, anim->meta, nullptr, &newTarget, entry.key());
                 anim->to.set(newTarget[0], newTarget[1]);
 
                 anim->timeLine.setDirection(TimeLine::Forward);
                 anim->timeLine.setDuration(std::chrono::milliseconds(newRemainingTime));
                 anim->timeLine.reset();
 
                 if (anim->attribute == CrossFadePrevious) {
                     CrossFadeEffect::redirect(entry.key());
                 }
                 return true;
             }
         }
     }
     return false; // no animation found
 }
 
 bool AnimationEffect::freezeInTime(quint64 animationId, qint64 frozenTime)
 {
     Q_D(AnimationEffect);
 
     if (animationId == d->m_justEndedAnimation) {
         return false; // this is just ending, do not try to retarget it
     }
     for (AniMap::iterator entry = d->m_animations.begin(),
                           mapEnd = d->m_animations.end();
          entry != mapEnd; ++entry) {
         for (QList<AniData>::iterator anim = entry->first.begin(),
                                       animEnd = entry->first.end();
              anim != animEnd; ++anim) {
             if (anim->id == animationId) {
                 if (frozenTime >= 0) {
                     anim->timeLine.setElapsed(std::chrono::milliseconds(frozenTime));
                 }
                 anim->frozenTime = frozenTime;
                 return true;
             }
         }
     }
     return false; // no animation found
 }
 
 bool AnimationEffect::redirect(quint64 animationId, Direction direction, TerminationFlags terminationFlags)
 {
     Q_D(AnimationEffect);
     if (animationId == d->m_justEndedAnimation) {
         return false;
     }
 
     for (auto entryIt = d->m_animations.begin(); entryIt != d->m_animations.end(); ++entryIt) {
         auto animIt = std::find_if(entryIt->first.begin(), entryIt->first.end(),
                                    [animationId](AniData &anim) {
                                        return anim.id == animationId;
                                    });
         if (animIt == entryIt->first.end()) {
             continue;
         }
 
         switch (direction) {
         case Backward:
             animIt->timeLine.setDirection(TimeLine::Backward);
             break;
 
         case Forward:
             animIt->timeLine.setDirection(TimeLine::Forward);
             break;
         }
 
         animIt->terminationFlags = terminationFlags & ~TerminateAtTarget;
 
         return true;
     }
 
     return false;
 }
 
 bool AnimationEffect::complete(quint64 animationId)
 {
     Q_D(AnimationEffect);
 
     if (animationId == d->m_justEndedAnimation) {
         return false;
     }
 
     for (auto entryIt = d->m_animations.begin(); entryIt != d->m_animations.end(); ++entryIt) {
         auto animIt = std::find_if(entryIt->first.begin(), entryIt->first.end(),
                                    [animationId](AniData &anim) {
                                        return anim.id == animationId;
                                    });
         if (animIt == entryIt->first.end()) {
             continue;
         }
 
         animIt->timeLine.setElapsed(animIt->timeLine.duration());
         unredirect(entryIt.key());
 
         return true;
     }
 
     return false;
 }
 
 bool AnimationEffect::cancel(quint64 animationId)
 {
     Q_D(AnimationEffect);
     if (animationId == d->m_justEndedAnimation) {
         return true; // this is just ending, do not try to cancel it but fake success
     }
     for (AniMap::iterator entry = d->m_animations.begin(), mapEnd = d->m_animations.end(); entry != mapEnd; ++entry) {
         for (QList<AniData>::iterator anim = entry->first.begin(), animEnd = entry->first.end(); anim != animEnd; ++anim) {
             if (anim->id == animationId) {
                 if (anim->shader && std::none_of(entry->first.begin(), entry->first.end(), [animationId] (const auto &anim) { return anim.id != animationId && anim.shader; })) {
                     unredirect(entry.key());
                 }
                 entry->first.erase(anim); // remove the animation
                 if (entry->first.isEmpty()) { // no other animations on the window, release it.
                     d->m_animations.erase(entry);
                 }
                 if (d->m_animations.isEmpty()) {
                     disconnectGeometryChanges();
                 }
                 d->m_animationsTouched = true; // could be called from animationEnded
                 return true;
             }
         }
     }
     return false;
 }
 
 void AnimationEffect::animationEnded(EffectWindow *w, Attribute a, uint meta)
 {
 }
 
 void AnimationEffect::genericAnimation(EffectWindow *w, WindowPaintData &data, float progress, uint meta)
 {
 }
 
 void AnimationEffect::prePaintScreen(ScreenPrePaintData &data, std::chrono::milliseconds presentTime)
 {
     Q_D(AnimationEffect);
     if (d->m_animations.isEmpty()) {
         effects->prePaintScreen(data, presentTime);
         return;
     }
 
     for (auto entry = d->m_animations.begin(); entry != d->m_animations.end(); ++entry) {
         for (auto anim = entry->first.begin(); anim != entry->first.end(); ++anim) {
             if (anim->startTime <= clock()) {
                 if (anim->frozenTime < 0) {
                     anim->timeLine.advance(presentTime);
                 }
             }
         }
     }
 
     effects->prePaintScreen(data, presentTime);
 }
 
 static qreal xCoord(const QRectF &r, int flag)
 {
     if (flag & AnimationEffect::Left) {
         return r.x();
     } else if (flag & AnimationEffect::Right) {
         return r.right();
     } else {
         return r.x() + r.width() / 2;
     }
 }
 
 static qreal yCoord(const QRectF &r, int flag)
 {
     if (flag & AnimationEffect::Top) {
         return r.y();
     } else if (flag & AnimationEffect::Bottom) {
         return r.bottom();
     } else {
         return r.y() + r.height() / 2;
     }
 }
 
 QRect AnimationEffect::clipRect(const QRect &geo, const AniData &anim) const
 {
     QRect clip = geo;
     FPx2 ratio = anim.from + progress(anim) * (anim.to - anim.from);
     if (anim.from[0] < 1.0 || anim.to[0] < 1.0) {
         clip.setWidth(clip.width() * ratio[0]);
     }
     if (anim.from[1] < 1.0 || anim.to[1] < 1.0) {
         clip.setHeight(clip.height() * ratio[1]);
     }
     const QRect center = geo.adjusted(clip.width() / 2, clip.height() / 2,
                                       -(clip.width() + 1) / 2, -(clip.height() + 1) / 2);
     const qreal x[2] = {xCoord(center, metaData(SourceAnchor, anim.meta)),
                         xCoord(center, metaData(TargetAnchor, anim.meta))};
     const qreal y[2] = {yCoord(center, metaData(SourceAnchor, anim.meta)),
                         yCoord(center, metaData(TargetAnchor, anim.meta))};
     const QPoint d(x[0] + ratio[0] * (x[1] - x[0]), y[0] + ratio[1] * (y[1] - y[0]));
     clip.moveTopLeft(QPoint(d.x() - clip.width() / 2, d.y() - clip.height() / 2));
     return clip;
 }
 
 void AnimationEffect::disconnectGeometryChanges()
 {
     disconnect(effects, &EffectsHandler::windowExpandedGeometryChanged,
                this, &AnimationEffect::_windowExpandedGeometryChanged);
 }
 
 void AnimationEffect::prePaintWindow(EffectWindow *w, WindowPrePaintData &data, std::chrono::milliseconds presentTime)
 {
     Q_D(AnimationEffect);
     AniMap::const_iterator entry = d->m_animations.constFind(w);
     if (entry != d->m_animations.constEnd()) {
         for (QList<AniData>::const_iterator anim = entry->first.constBegin(); anim != entry->first.constEnd(); ++anim) {
             if (anim->startTime > clock() && !anim->waitAtSource) {
                 continue;
             }
 
             if (anim->attribute == Opacity || anim->attribute == CrossFadePrevious) {
                 data.setTranslucent();
             } else if (!(anim->attribute == Brightness || anim->attribute == Saturation)) {
                 data.setTransformed();
             }
         }
     }
     effects->prePaintWindow(w, data, presentTime);
 }
 
 static inline float geometryCompensation(int flags, float v)
 {
     if (flags & (AnimationEffect::Left | AnimationEffect::Top)) {
         return 0.0; // no compensation required
     }
     if (flags & (AnimationEffect::Right | AnimationEffect::Bottom)) {
         return 1.0 - v; // full compensation
     }
     return 0.5 * (1.0 - v); // half compensation
 }
 
 void AnimationEffect::paintWindow(EffectWindow *w, int mask, QRegion region, WindowPaintData &data)
 {
     Q_D(AnimationEffect);
     AniMap::const_iterator entry = d->m_animations.constFind(w);
     auto finalRegion = region;
 
     if (entry != d->m_animations.constEnd()) {
         for (QList<AniData>::const_iterator anim = entry->first.constBegin(); anim != entry->first.constEnd(); ++anim) {
 
             if (anim->startTime > clock() && !anim->waitAtSource) {
                 continue;
             }
 
             switch (anim->attribute) {
             case Opacity:
                 data.multiplyOpacity(interpolated(*anim));
                 break;
             case Brightness:
                 data.multiplyBrightness(interpolated(*anim));
                 break;
             case Saturation:
                 data.multiplySaturation(interpolated(*anim));
                 break;
             case Scale: {
                 const QSizeF sz = w->frameGeometry().size();
                 float f1(1.0), f2(0.0);
                 if (anim->from[0] >= 0.0 && anim->to[0] >= 0.0) { // scale x
                     f1 = interpolated(*anim, 0);
                     f2 = geometryCompensation(anim->meta & AnimationEffect::Horizontal, f1);
                     data.translate(f2 * sz.width());
                     data.setXScale(data.xScale() * f1);
                 }
                 if (anim->from[1] >= 0.0 && anim->to[1] >= 0.0) { // scale y
                     if (!anim->isOneDimensional()) {
                         f1 = interpolated(*anim, 1);
                         f2 = geometryCompensation(anim->meta & AnimationEffect::Vertical, f1);
                     } else if (((anim->meta & AnimationEffect::Vertical) >> 1) != (anim->meta & AnimationEffect::Horizontal)) {
                         f2 = geometryCompensation(anim->meta & AnimationEffect::Vertical, f1);
                     }
                     data.translate(0.0, f2 * sz.height());
                     data.setYScale(data.yScale() * f1);
                 }
                 break;
             }
             case Clip:
                 finalRegion = clipRect(w->expandedGeometry().toAlignedRect(), *anim);
                 break;
             case Translation:
                 data += QPointF(interpolated(*anim, 0), interpolated(*anim, 1));
                 break;
             case Size: {
                 FPx2 dest = anim->from + progress(*anim) * (anim->to - anim->from);
                 const QSizeF sz = w->frameGeometry().size();
                 float f;
                 if (anim->from[0] >= 0.0 && anim->to[0] >= 0.0) { // resize x
                     f = dest[0] / sz.width();
                     data.translate(geometryCompensation(anim->meta & AnimationEffect::Horizontal, f) * sz.width());
                     data.setXScale(data.xScale() * f);
                 }
                 if (anim->from[1] >= 0.0 && anim->to[1] >= 0.0) { // resize y
                     f = dest[1] / sz.height();
                     data.translate(0.0, geometryCompensation(anim->meta & AnimationEffect::Vertical, f) * sz.height());
                     data.setYScale(data.yScale() * f);
                 }
                 break;
             }
             case Position: {
                 const QRectF geo = w->frameGeometry();
                 const float prgrs = progress(*anim);
                 if (anim->from[0] >= 0.0 && anim->to[0] >= 0.0) {
                     float dest = interpolated(*anim, 0);
                     const qreal x[2] = {xCoord(geo, metaData(SourceAnchor, anim->meta)),
                                         xCoord(geo, metaData(TargetAnchor, anim->meta))};
                     data.translate(dest - (x[0] + prgrs * (x[1] - x[0])));
                 }
                 if (anim->from[1] >= 0.0 && anim->to[1] >= 0.0) {
                     float dest = interpolated(*anim, 1);
                     const qreal y[2] = {yCoord(geo, metaData(SourceAnchor, anim->meta)),
                                         yCoord(geo, metaData(TargetAnchor, anim->meta))};
                     data.translate(0.0, dest - (y[0] + prgrs * (y[1] - y[0])));
                 }
                 break;
             }
             case Rotation: {
                 data.setRotationAxis((Qt::Axis)metaData(Axis, anim->meta));
                 const float prgrs = progress(*anim);
                 data.setRotationAngle(anim->from[0] + prgrs * (anim->to[0] - anim->from[0]));
 
                 const QRect geo = w->rect().toRect();
                 const uint sAnchor = metaData(SourceAnchor, anim->meta),
                            tAnchor = metaData(TargetAnchor, anim->meta);
                 QPointF pt(xCoord(geo, sAnchor), yCoord(geo, sAnchor));
 
                 if (tAnchor != sAnchor) {
                     QPointF pt2(xCoord(geo, tAnchor), yCoord(geo, tAnchor));
                     pt += static_cast<qreal>(prgrs) * (pt2 - pt);
                 }
                 data.setRotationOrigin(QVector3D(pt));
                 break;
             }
             case Generic:
                 genericAnimation(w, data, progress(*anim), anim->meta);
                 break;
             case CrossFadePrevious:
                 data.setCrossFadeProgress(progress(*anim));
                 break;
             case Shader:
                 if (anim->shader && anim->shader->isValid()) {
                     ShaderBinder binder{anim->shader};
                     anim->shader->setUniform("animationProgress", progress(*anim));
                     setShader(w, anim->shader);
                 }
                 break;
             case ShaderUniform:
                 if (anim->shader && anim->shader->isValid()) {
                     ShaderBinder binder{anim->shader};
                     anim->shader->setUniform("animationProgress", progress(*anim));
                     anim->shader->setUniform(anim->meta, interpolated(*anim));
                     setShader(w, anim->shader);
                 }
                 break;
             default:
                 break;
             }
         }
     }
 
     effects->paintWindow(w, mask, region, data);
 }
 
 void AnimationEffect::postPaintScreen()
 {
     Q_D(AnimationEffect);
     d->m_animationsTouched = false;
     bool damageDirty = false;
 
     for (auto entry = d->m_animations.begin(); entry != d->m_animations.end();) {
         bool invalidateLayerRect = false;
         int animCounter = 0;
         for (auto anim = entry->first.begin(); anim != entry->first.end();) {
             if (anim->isActive() || (anim->startTime > clock() && !anim->waitAtSource)) {
                 ++anim;
                 ++animCounter;
                 continue;
             }
             EffectWindow *window = entry.key();
             d->m_justEndedAnimation = anim->id;
             if (anim->shader && std::none_of(entry->first.begin(), entry->first.end(), [anim] (const auto &other) { return anim->id != other.id && other.shader; })) {
                 unredirect(window);
             }
             unredirect(window);
             animationEnded(window, anim->attribute, anim->meta);
             d->m_justEndedAnimation = 0;
             // NOTICE animationEnded is an external call and might have called "::animate"
             // as a result our iterators could now point random junk on the heap
             // so we've to restore the former states, ie. find our window list and animation
             if (d->m_animationsTouched) {
                 d->m_animationsTouched = false;
                 entry = d->m_animations.begin();
                 while (entry.key() != window && entry != d->m_animations.end()) {
                     ++entry;
                 }
                 Q_ASSERT(entry != d->m_animations.end()); // usercode should not delete animations from animationEnded (not even possible atm.)
                 anim = entry->first.begin();
                 Q_ASSERT(animCounter < entry->first.count());
                 for (int i = 0; i < animCounter; ++i) {
                     ++anim;
                 }
             }
             anim = entry->first.erase(anim);
             invalidateLayerRect = damageDirty = true;
         }
         if (entry->first.isEmpty()) {
             effects->addRepaint(entry->second);
             entry = d->m_animations.erase(entry);
         } else {
             if (invalidateLayerRect) {
                 *const_cast<QRect *>(&(entry->second)) = QRect(); // invalidate
             }
             ++entry;
         }
     }
 
     if (damageDirty) {
         updateLayerRepaints();
     }
     if (d->m_needSceneRepaint) {
         effects->addRepaintFull();
     } else {
         for (auto entry = d->m_animations.constBegin(); entry != d->m_animations.constEnd(); ++entry) {
             for (auto anim = entry->first.constBegin(); anim != entry->first.constEnd(); ++anim) {
                 if (anim->startTime > clock()) {
                     continue;
                 }
                 if (!anim->timeLine.done()) {
                     entry.key()->addLayerRepaint(entry->second);
                     break;
                 }
             }
         }
     }
 
     // janitorial...
     if (d->m_animations.isEmpty()) {
         disconnectGeometryChanges();
     }
 
     effects->postPaintScreen();
 }
 
 float AnimationEffect::interpolated(const AniData &a, int i) const
 {
     return a.from[i] + a.timeLine.value() * (a.to[i] - a.from[i]);
 }
 
 float AnimationEffect::progress(const AniData &a) const
 {
     return a.startTime < clock() ? a.timeLine.value() : 0.0;
 }
 
 // TODO - get this out of the header - the functionpointer usage of QEasingCurve somehow sucks ;-)
 // qreal AnimationEffect::qecGaussian(qreal progress) // exp(-5*(2*x-1)^2)
 // {
 //     progress = 2*progress - 1;
 //     progress *= -5*progress;
 //     return qExp(progress);
 // }
 
 int AnimationEffect::metaData(MetaType type, uint meta)
 {
     switch (type) {
     case SourceAnchor:
         return ((meta >> 5) & 0x1f);
     case TargetAnchor:
         return (meta & 0x1f);
     case RelativeSourceX:
     case RelativeSourceY:
     case RelativeTargetX:
     case RelativeTargetY: {
         const int shift = 10 + type - RelativeSourceX;
         return ((meta >> shift) & 1);
     }
     case Axis:
         return ((meta >> 10) & 3);
     default:
         return 0;
     }
 }
 
 void AnimationEffect::setMetaData(MetaType type, uint value, uint &meta)
 {
     switch (type) {
     case SourceAnchor:
         meta &= ~(0x1f << 5);
         meta |= ((value & 0x1f) << 5);
         break;
     case TargetAnchor:
         meta &= ~(0x1f);
         meta |= (value & 0x1f);
         break;
     case RelativeSourceX:
     case RelativeSourceY:
     case RelativeTargetX:
     case RelativeTargetY: {
         const int shift = 10 + type - RelativeSourceX;
         if (value) {
             meta |= (1 << shift);
         } else {
             meta &= ~(1 << shift);
         }
         break;
     }
     case Axis:
         meta &= ~(3 << 10);
         meta |= ((value & 3) << 10);
         break;
     default:
         break;
     }
 }
 
 void AnimationEffect::triggerRepaint()
 {
     Q_D(AnimationEffect);
     for (AniMap::const_iterator entry = d->m_animations.constBegin(), mapEnd = d->m_animations.constEnd(); entry != mapEnd; ++entry) {
         *const_cast<QRect *>(&(entry->second)) = QRect();
     }
     updateLayerRepaints();
     if (d->m_needSceneRepaint) {
         effects->addRepaintFull();
     } else {
         AniMap::const_iterator it = d->m_animations.constBegin(), end = d->m_animations.constEnd();
         for (; it != end; ++it) {
             it.key()->addLayerRepaint(it->second);
         }
     }
 }
 
 static float fixOvershoot(float f, const AniData &d, short int dir, float s = 1.1)
 {
     switch (d.timeLine.easingCurve().type()) {
     case QEasingCurve::InOutElastic:
     case QEasingCurve::InOutBack:
         return f * s;
     case QEasingCurve::InElastic:
     case QEasingCurve::OutInElastic:
     case QEasingCurve::OutBack:
         return (dir & 2) ? f * s : f;
     case QEasingCurve::OutElastic:
     case QEasingCurve::InBack:
         return (dir & 1) ? f * s : f;
     default:
         return f;
     }
 }
 
 void AnimationEffect::updateLayerRepaints()
 {
     Q_D(AnimationEffect);
     d->m_needSceneRepaint = false;
     for (AniMap::const_iterator entry = d->m_animations.constBegin(), mapEnd = d->m_animations.constEnd(); entry != mapEnd; ++entry) {
         if (!entry->second.isNull()) {
             continue;
         }
         float f[2] = {1.0, 1.0};
         float t[2] = {0.0, 0.0};
         bool createRegion = false;
         QList<QRect> rects;
         QRect *layerRect = const_cast<QRect *>(&(entry->second));
         for (QList<AniData>::const_iterator anim = entry->first.constBegin(), animEnd = entry->first.constEnd(); anim != animEnd; ++anim) {
             if (anim->startTime > clock()) {
                 continue;
             }
             switch (anim->attribute) {
             case Opacity:
             case Brightness:
             case Saturation:
             case CrossFadePrevious:
             case Shader:
             case ShaderUniform:
                 createRegion = true;
                 break;
             case Rotation:
                 createRegion = false;
                 *layerRect = QRect(QPoint(0, 0), effects->virtualScreenSize());
                 goto region_creation; // sic! no need to do anything else
             case Generic:
                 d->m_needSceneRepaint = true; // we don't know whether this will change visual stacking order
                 return; // sic! no need to do anything else
             case Translation:
             case Position: {
                 createRegion = true;
                 QRect r(entry.key()->frameGeometry().toRect());
                 int x[2] = {0, 0};
                 int y[2] = {0, 0};
                 if (anim->attribute == Translation) {
                     x[0] = anim->from[0];
                     x[1] = anim->to[0];
                     y[0] = anim->from[1];
                     y[1] = anim->to[1];
                 } else {
                     if (anim->from[0] >= 0.0 && anim->to[0] >= 0.0) {
                         x[0] = anim->from[0] - xCoord(r, metaData(SourceAnchor, anim->meta));
                         x[1] = anim->to[0] - xCoord(r, metaData(TargetAnchor, anim->meta));
                     }
                     if (anim->from[1] >= 0.0 && anim->to[1] >= 0.0) {
                         y[0] = anim->from[1] - yCoord(r, metaData(SourceAnchor, anim->meta));
                         y[1] = anim->to[1] - yCoord(r, metaData(TargetAnchor, anim->meta));
                     }
                 }
                 r = entry.key()->expandedGeometry().toRect();
                 rects << r.translated(x[0], y[0]) << r.translated(x[1], y[1]);
                 break;
             }
             case Clip:
                 createRegion = true;
                 break;
             case Size:
             case Scale: {
                 createRegion = true;
                 const QSize sz = entry.key()->frameGeometry().size().toSize();
                 float fx = std::max(fixOvershoot(anim->from[0], *anim, 1), fixOvershoot(anim->to[0], *anim, 2));
                 //                     float fx = std::max(interpolated(*anim,0), anim->to[0]);
                 if (fx >= 0.0) {
                     if (anim->attribute == Size) {
                         fx /= sz.width();
                     }
                     f[0] *= fx;
                     t[0] += geometryCompensation(anim->meta & AnimationEffect::Horizontal, fx) * sz.width();
                 }
                 //                     float fy = std::max(interpolated(*anim,1), anim->to[1]);
                 float fy = std::max(fixOvershoot(anim->from[1], *anim, 1), fixOvershoot(anim->to[1], *anim, 2));
                 if (fy >= 0.0) {
                     if (anim->attribute == Size) {
                         fy /= sz.height();
                     }
                     if (!anim->isOneDimensional()) {
                         f[1] *= fy;
                         t[1] += geometryCompensation(anim->meta & AnimationEffect::Vertical, fy) * sz.height();
                     } else if (((anim->meta & AnimationEffect::Vertical) >> 1) != (anim->meta & AnimationEffect::Horizontal)) {
                         f[1] *= fx;
                         t[1] += geometryCompensation(anim->meta & AnimationEffect::Vertical, fx) * sz.height();
                     }
                 }
                 break;
             }
             }
         }
     region_creation:
         if (createRegion) {
             const QRect geo = entry.key()->expandedGeometry().toRect();
             if (rects.isEmpty()) {
                 rects << geo;
             }
             QList<QRect>::const_iterator r, rEnd = rects.constEnd();
             for (r = rects.constBegin(); r != rEnd; ++r) { // transform
                 const_cast<QRect *>(&(*r))->setSize(QSize(qRound(r->width() * f[0]), qRound(r->height() * f[1])));
                 const_cast<QRect *>(&(*r))->translate(t[0], t[1]); // "const_cast" - don't do that at home, kids ;-)
             }
             QRect rect = rects.at(0);
             if (rects.count() > 1) {
                 for (r = rects.constBegin() + 1; r != rEnd; ++r) { // unite
                     rect |= *r;
                 }
                 const int dx = 110 * (rect.width() - geo.width()) / 100 + 1 - rect.width() + geo.width();
                 const int dy = 110 * (rect.height() - geo.height()) / 100 + 1 - rect.height() + geo.height();
                 rect.adjust(-dx, -dy, dx, dy); // fix pot. overshoot
             }
             *layerRect = rect;
         }
     }
 }
 
 void AnimationEffect::_windowExpandedGeometryChanged(KWin::EffectWindow *w)
 {
     Q_D(AnimationEffect);
     AniMap::const_iterator entry = d->m_animations.constFind(w);
     if (entry != d->m_animations.constEnd()) {
         *const_cast<QRect *>(&(entry->second)) = QRect();
         updateLayerRepaints();
         if (!entry->second.isNull()) { // actually got updated, ie. is in use - ensure it get's a repaint
             w->addLayerRepaint(entry->second);
         }
     }
 }
 
 void AnimationEffect::_windowClosed(EffectWindow *w)
 {
     Q_D(AnimationEffect);
 
     auto it = d->m_animations.find(w);
     if (it == d->m_animations.end()) {
         return;
     }
 
     QList<AniData> &animations = (*it).first;
     for (auto animationIt = animations.begin(); animationIt != animations.end(); ++animationIt) {
         if (animationIt->keepAlive) {
             animationIt->deletedRef = EffectWindowDeletedRef(w);
         }
     }
 }
 
 void AnimationEffect::_windowDeleted(EffectWindow *w)
 {
     Q_D(AnimationEffect);
     d->m_animations.remove(w);
 }
 
 QString AnimationEffect::debug(const QString & /*parameter*/) const
 {
     Q_D(const AnimationEffect);
     QString dbg;
     if (d->m_animations.isEmpty()) {
         dbg = QStringLiteral("No window is animated");
     } else {
         AniMap::const_iterator entry = d->m_animations.constBegin(), mapEnd = d->m_animations.constEnd();
         for (; entry != mapEnd; ++entry) {
             QString caption = entry.key()->isDeleted() ? QStringLiteral("[Deleted]") : entry.key()->caption();
             if (caption.isEmpty()) {
                 caption = QStringLiteral("[Untitled]");
             }
             dbg += QLatin1String("Animating window: ") + caption + QLatin1Char('\n');
             QList<AniData>::const_iterator anim = entry->first.constBegin(), animEnd = entry->first.constEnd();
             for (; anim != animEnd; ++anim) {
                 dbg += anim->debugInfo();
             }
         }
     }
     return dbg;
 }
 
 AnimationEffect::AniMap AnimationEffect::state() const
 {
     Q_D(const AnimationEffect);
     return d->m_animations;
 }
 
 } // namespace KWin
 
 #include "moc_kwinanimationeffect.cpp"