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127 lines
3.5 KiB
C++
127 lines
3.5 KiB
C++
/*
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* Copyright (C) 2007 Petri Damsten <damu@iki.fi>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifndef SCROLLER_HEADER
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#define SCROLLER_HEADER
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#include "feeddata.h"
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#include <QList>
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#include <QGraphicsWidget>
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#include <QtCore/qsharedpointer.h>
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#include <QAbstractAnimation>
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#include <plasma/plasma_export.h>
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#include <plasma/animator.h>
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#include <plasma/dataengine.h>
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class KIcon;
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class SingleFeedItem;
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class FeedData;
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#include <QPropertyAnimation>
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namespace Plasma
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{
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// namespace Plasma
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class IconWidget;
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}
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class Scroller : public QGraphicsWidget
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{
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Q_OBJECT
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Q_PROPERTY(qreal animate READ animValue WRITE animate)
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public:
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Scroller(QGraphicsItem *parent = 0);
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virtual ~Scroller();
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virtual void setGeometry(const QRectF &geometry);
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QList<FeedData> list();
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void delayedMoveNext(int delay);
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void listUpdated();
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void setAnimations(bool animations);
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bool animations() const;
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int maxAge() const;
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void setMaxAge(int maxAge);
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bool dropTarget() const;
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void setDropTarget(bool droptarget);
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bool hovering() const;
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qreal animValue() const;
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public slots:
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void dataUpdated(const QString& source, const Plasma::DataEngine::Data &data);
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protected:
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virtual void wheelEvent (QGraphicsSceneWheelEvent *event);
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virtual void mousePressEvent(QGraphicsSceneMouseEvent *event);
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virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
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virtual void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
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virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
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virtual QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const;
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protected slots:
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void leftClicked();
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void rightClicked();
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void moveNext();
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void movePrev();
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void animationComplete();
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void clearUnusedItems();
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void animate(qreal value);
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private:
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void updateSize();
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void doAnimation(QAbstractAnimation::Direction direction);
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QString fuzzyDate(const QDateTime& datetime);
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int m_current;
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bool m_animations;
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//how many times has the user clicked / scrolled next or previous
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//while the current animation is being displayed.
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int m_delayedNext;
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int m_delayedPrev;
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int m_maxAge;
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bool m_droptarget;
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QList<FeedData> m_list;
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//itemlist contains all SingleFeedItems that are currently in
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//memory and should be cleared later.
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QList<SingleFeedItem *> m_itemlist;
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//activeitemlist contains all SingleFeedItems that are currently
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//displayed (always 1 or 2 in a horizontal scroller, but a future
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//vertical scroller might need more so we use a list
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QList<SingleFeedItem *> m_activeitemlist;
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QMap<QString, KIcon *> m_feedIcons;
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Plasma::IconWidget *m_left;
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Plasma::IconWidget *m_right;
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bool m_hovered;
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bool m_isAnimating;
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QWeakPointer<QPropertyAnimation> m_animation;
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};
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#endif
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