5a721b9bad
it to all Animation derived classes. The idea is that the user can select the easing curve (if the it makes sense in the animation). svn path=/trunk/KDE/kdelibs/; revision=1060687
136 lines
3.5 KiB
C++
136 lines
3.5 KiB
C++
/*
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* Copyright 2009 Mehmet Ali Akmanalp <makmanalp@wpi.edu>
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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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#include "slide_p.h"
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#include <QPointF>
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#include <kdebug.h>
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namespace Plasma
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{
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void SlideAnimation::setDistance(qreal distance)
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{
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m_animDistance = distance;
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}
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qreal SlideAnimation::distance() const
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{
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return m_animDistance;
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}
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SlideAnimation::~SlideAnimation()
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{
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}
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SlideAnimation::SlideAnimation(QObject *parent,
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AnimationDirection direction,
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qreal distance) : Animation(parent)
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{
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setMovementDirection(direction);
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setDistance(distance);
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}
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void SlideAnimation::setMovementDirection(const qint8 &direction)
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{
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m_animDirection = static_cast<Plasma::AnimationDirection>(direction);
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}
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qint8 SlideAnimation::movementDirection() const
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{
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return static_cast<qint8>(m_animDirection);
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}
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void SlideAnimation::updateCurrentTime(int currentTime)
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{
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QGraphicsWidget *w = widgetToAnimate();
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if (w && state() == QAbstractAnimation::Running) {
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qreal delta = Animation::easingCurve().valueForProgress(
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currentTime / qreal(duration()));
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w->setPos(m_startPos * (1-delta) + (m_targetPos * delta));
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}
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}
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void SlideAnimation::updateState(QAbstractAnimation::State newState, QAbstractAnimation::State oldState)
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{
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if (oldState == QAbstractAnimation::Stopped && newState == QAbstractAnimation::Running) {
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if (!widgetToAnimate()) {
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return;
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}
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m_startPos = widgetToAnimate()->pos();
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qreal newX = m_startPos.x();
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qreal newY = m_startPos.y();
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int actualDistance = (direction() == QAbstractAnimation::Forward?distance():-distance());
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switch (movementDirection()) {
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case MoveUp:
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newY -= actualDistance;
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break;
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case MoveRight:
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newX += actualDistance;
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break;
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case MoveDown:
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newY += actualDistance;
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break;
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case MoveLeft:
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newX -= actualDistance;
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break;
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case MoveUpRight:
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newX += actualDistance;
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newY -= actualDistance;
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break;
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case MoveDownRight:
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newX += actualDistance;
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newY += actualDistance;
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break;
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case MoveDownLeft:
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newX -= actualDistance;
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newY += actualDistance;
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break;
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case MoveUpLeft:
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newX -= actualDistance;
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newY -= actualDistance;
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break;
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default:
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kDebug()<<"Compound direction is not supported";
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return;
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}
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if (direction() == QAbstractAnimation::Forward) {
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m_targetPos = QPointF(newX, newY);
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} else {
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m_targetPos = m_startPos;
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m_startPos = QPointF(newX, newY);
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}
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}
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}
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} //namespace Plasma
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