File indexing completed on 2024-04-14 03:53:28

 /*
     This file is part of the KDE project
     SPDX-FileCopyrightText: 2007 Fredrik Höglund <fredrik@kde.org>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #ifndef DELEGATEANIMATIONHANDLER_P_H
 #define DELEGATEANIMATIONHANDLER_P_H
 
 #include <QBasicTimer>
 #include <QElapsedTimer>
 #include <QMap>
 #include <QPersistentModelIndex>
 #include <QStyle>
 #include <QTime>
 #include <QTimeLine>
 #include <QTimer>
 
 class QAbstractItemView;
 
 namespace KIO
 {
 class CachedRendering : public QObject
 {
     Q_OBJECT
 public:
     CachedRendering(QStyle::State state, const QSize &size, const QModelIndex &validityIndex, qreal devicePixelRatio = 1.0);
     bool checkValidity(QStyle::State current) const
     {
         return state == current && valid;
     }
 
     QStyle::State state;
     QPixmap regular;
     QPixmap hover;
 
     bool valid;
     QPersistentModelIndex validityIndex;
 private Q_SLOTS:
     void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight);
     void modelReset();
 };
 
 class AnimationState
 {
 public:
     ~AnimationState();
     AnimationState(const AnimationState &) = delete;
     AnimationState &operator=(const AnimationState &) = delete;
 
     // Progress of the mouse hovering animation
     qreal hoverProgress() const;
     // Progress of the icon fading animation
     qreal fadeProgress() const;
     // Angle of the painter, to paint the animation for a file job on an item
     qreal jobAnimationAngle() const;
 
     void setJobAnimation(bool value);
     bool hasJobAnimation() const;
 
     CachedRendering *cachedRendering() const
     {
         return renderCache;
     }
     // The previous render-cache is deleted, if there was one
     void setCachedRendering(CachedRendering *rendering)
     {
         delete renderCache;
         renderCache = rendering;
     }
 
     // Returns current cached rendering, and removes it from this state.
     // The caller has the ownership.
     CachedRendering *takeCachedRendering()
     {
         CachedRendering *ret = renderCache;
         renderCache = nullptr;
         return ret;
     }
 
     CachedRendering *cachedRenderingFadeFrom() const
     {
         return fadeFromRenderCache;
     }
     // The previous render-cache is deleted, if there was one
     void setCachedRenderingFadeFrom(CachedRendering *rendering)
     {
         delete fadeFromRenderCache;
         fadeFromRenderCache = rendering;
         if (rendering) {
             m_fadeProgress = 0;
         } else {
             m_fadeProgress = 1;
         }
     }
 
 private:
     explicit AnimationState(const QModelIndex &index);
     bool update();
 
     QPersistentModelIndex index;
     QTimeLine::Direction direction;
     bool animating;
     bool jobAnimation;
     qreal progress;
     qreal m_fadeProgress;
     qreal m_jobAnimationAngle;
     QElapsedTimer time;
     QElapsedTimer creationTime;
     CachedRendering *renderCache;
     CachedRendering *fadeFromRenderCache;
 
     friend class DelegateAnimationHandler;
 };
 
 class DelegateAnimationHandler : public QObject
 {
     Q_OBJECT
 
     typedef QList<AnimationState *> AnimationList;
     typedef QMapIterator<const QAbstractItemView *, AnimationList *> AnimationListsIterator;
     typedef QMutableMapIterator<const QAbstractItemView *, AnimationList *> MutableAnimationListsIterator;
 
 public:
     explicit DelegateAnimationHandler(QObject *parent = nullptr);
     ~DelegateAnimationHandler() override;
 
     AnimationState *animationState(const QStyleOption &option, const QModelIndex &index, const QAbstractItemView *view);
 
     void restartAnimation(AnimationState *state);
 
     void gotNewIcon(const QModelIndex &index);
 
 private Q_SLOTS:
     void viewDeleted(QObject *view);
     void sequenceTimerTimeout();
 
 private:
     void eventuallyStartIteration(const QModelIndex &index);
     AnimationState *findAnimationState(const QAbstractItemView *view, const QModelIndex &index) const;
     void addAnimationState(AnimationState *state, const QAbstractItemView *view);
     void startAnimation(AnimationState *state);
     int runAnimations(AnimationList *list, const QAbstractItemView *view);
     void timerEvent(QTimerEvent *event) override;
     void setSequenceIndex(int arg1);
 
 private:
     QMap<const QAbstractItemView *, AnimationList *> animationLists;
     QElapsedTimer fadeInAddTime;
     QBasicTimer timer;
     // Icon sequence handling:
     QPersistentModelIndex sequenceModelIndex;
     QTimer iconSequenceTimer;
     int currentSequenceIndex;
 };
 
 }
 
 #endif