664 lines
22 KiB
C++
664 lines
22 KiB
C++
/*
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* Copyright 2007 Aaron Seigo <aseigo@kde.org>
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* 2007 Alexis Ménard <darktears31@gmail.com>
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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 "phase.h"
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#include <QGraphicsItem>
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#include <KConfig>
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#include <KConfigGroup>
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#include <KService>
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#include <KServiceTypeTrader>
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#include <KGlobalSettings>
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#include "animator.h"
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#include "widgets/widget.h"
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namespace Plasma
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{
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static const qreal MIN_TICK_RATE = 40;
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struct AnimationState
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{
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QGraphicsItem *item;
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QObject *qobj;
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Phase::Animation animation;
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Phase::CurveShape curve;
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int interval;
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int currentInterval;
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int frames;
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int currentFrame;
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};
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struct ElementAnimationState
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{
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QGraphicsItem *item;
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QObject *qobj;
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Phase::CurveShape curve;
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Phase::ElementAnimation animation;
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int interval;
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int currentInterval;
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int frames;
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int currentFrame;
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int id;
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QPixmap pixmap;
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};
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struct MovementState
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{
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QGraphicsItem *item;
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QObject *qobj;
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Phase::CurveShape curve;
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Phase::Movement movement;
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int interval;
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int currentInterval;
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int frames;
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int currentFrame;
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QPoint start;
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QPoint destination;
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};
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struct CustomAnimationState
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{
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Phase::CurveShape curve;
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int frames;
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int currentFrame;
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int interval;
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int currentInterval;
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Phase::AnimId id;
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QObject* receiver;
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char* slot;
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};
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class Phase::Private
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{
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public:
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Private()
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: animator(0),
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animId(0),
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timerId(0)
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{
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}
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~Private()
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{
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qDeleteAll(animatedItems);
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qDeleteAll(animatedElements);
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qDeleteAll(movingItems);
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QMutableMapIterator<AnimId, CustomAnimationState*> it(customAnims);
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while (it.hasNext()) {
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delete it.value()->slot;
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delete it.value();
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it.remove();
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}
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// Animator is a QObject
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// and we don't own the items
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}
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qreal calculateProgress(int frames, int currentFrame)
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{
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if (!(KGlobalSettings::graphicEffectsLevel() & KGlobalSettings::SimpleAnimationEffects)) {
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return qreal(1.0);
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}
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qreal progress = frames;
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progress = currentFrame / progress;
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progress = qMin(qreal(1.0), qMax(qreal(0.0), progress));
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return progress;
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}
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void performAnimation(qreal amount, const AnimationState* state)
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{
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switch (state->animation) {
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case Phase::Appear:
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animator->appear(amount, state->item);
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break;
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case Phase::Disappear:
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animator->disappear(amount, state->item);
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if (amount >= 1) {
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state->item->hide();
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}
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break;
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case Phase::Activate:
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animator->activate(amount, state->item);
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break;
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}
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}
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void performMovement(qreal amount, const MovementState* state)
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{
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switch (state->movement) {
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case Phase::SlideIn:
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case Phase::FastSlideIn:
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//kDebug() << "performMovement, SlideIn";
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animator->slideIn(amount, state->item, state->start, state->destination);
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break;
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case Phase::SlideOut:
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case Phase::FastSlideOut:
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//kDebug() << "performMovement, SlideOut";
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animator->slideOut(amount, state->item, state->start, state->destination);
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break;
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}
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}
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Animator* animator;
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int animId;
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int timerId;
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QTime time;
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//TODO: eventually perhaps we should allow multiple animations simulataneously
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// which would imply changing this to a QMap<QGraphicsItem*, QList<QTimeLine*> >
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// and really making the code fun ;)
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QMap<QGraphicsItem*, AnimationState*> animatedItems;
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QMap<QGraphicsItem*, MovementState*> movingItems;
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QMap<AnimId, ElementAnimationState*> animatedElements;
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QMap<AnimId, CustomAnimationState*> customAnims;
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};
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class PhaseSingleton
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{
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public:
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Phase self;
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};
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K_GLOBAL_STATIC( PhaseSingleton, privateSelf )
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Phase* Phase::self()
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{
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return &privateSelf->self;
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}
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Phase::Phase(QObject * parent)
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: QObject(parent),
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d(new Private)
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{
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init();
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}
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Phase::~Phase()
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{
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delete d;
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}
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void Phase::animatedItemDestroyed(QObject* o)
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{
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//kDebug() << "testing for" << (void*)o;
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QMutableMapIterator<QGraphicsItem*, AnimationState*> it(d->animatedItems);
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while (it.hasNext()) {
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it.next();
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//kDebug() << "comparing against" << it.value()->qobj;
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if (it.value()->qobj == o) {
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kDebug() << "found deleted animated item";
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delete it.value();
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it.remove();
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}
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}
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}
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void Phase::movingItemDestroyed(QObject* o)
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{
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QMutableMapIterator<QGraphicsItem*, MovementState*> it(d->movingItems);
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while (it.hasNext()) {
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it.next();
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if (it.value()->qobj == o) {
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delete it.value();
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it.remove();
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}
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}
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}
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void Phase::animatedElementDestroyed(QObject* o)
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{
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QMutableMapIterator<AnimId, ElementAnimationState*> it(d->animatedElements);
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while (it.hasNext()) {
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it.next();
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if (it.value()->qobj == o) {
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delete it.value();
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it.remove();
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}
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}
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}
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void Phase::customAnimReceiverDestroyed(QObject* o)
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{
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QMutableMapIterator<AnimId, CustomAnimationState*> it(d->customAnims);
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while (it.hasNext()) {
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if (it.next().value()->receiver == o) {
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delete it.value()->slot;
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delete it.value();
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it.remove();
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}
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}
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}
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void Phase::animateItem(QGraphicsItem* item, Animation animation)
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{
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//kDebug();
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// get rid of any existing animations on this item.
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//TODO: shoudl we allow multiple anims per item?
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QMap<QGraphicsItem*, AnimationState*>::iterator it = d->animatedItems.find(item);
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if (it != d->animatedItems.end()) {
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delete it.value();
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d->animatedItems.erase(it);
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}
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int frames = d->animator->framesPerSecond(animation);
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if (frames < 1) {
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// evidently this animator doesn't have an implementation
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// for this Animation
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return;
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}
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AnimationState* state = new AnimationState;
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state->item = item;
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state->animation = animation;
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state->curve = d->animator->curve(animation);
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//TODO: variance in times based on the value of animation
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state->frames = frames / 3;
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state->currentFrame = 0;
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state->interval = d->animator->duration(animation) / state->frames;
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state->interval = (state->interval / MIN_TICK_RATE) * MIN_TICK_RATE;
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state->currentInterval = state->interval;
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state->qobj = dynamic_cast<QObject*>(item);
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if (state->qobj) {
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//kDebug() << "!!!!!!!!!!!!!!!!!!!!!!!!! got us an object!";
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disconnect(state->qobj, SIGNAL(destroyed(QObject*)), this, SLOT(animatedItemDestroyed(QObject*)));
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connect(state->qobj, SIGNAL(destroyed(QObject*)), this, SLOT(animatedItemDestroyed(QObject*)));
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}
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d->animatedItems[item] = state;
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d->performAnimation(0, state);
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if (!d->timerId) {
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d->timerId = startTimer(MIN_TICK_RATE);
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d->time.restart();
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}
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}
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void Phase::moveItem(QGraphicsItem* item, Movement movement, const QPoint &destination)
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{
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//kDebug();
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QMap<QGraphicsItem*, MovementState*>::iterator it = d->movingItems.find(item);
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if (it != d->movingItems.end()) {
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delete it.value();
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d->movingItems.erase(it);
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}
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int frames = d->animator->framesPerSecond(movement);
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if (frames <= 1) {
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// evidently this animator doesn't have an implementation
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// for this Animation
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return;
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}
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MovementState* state = new MovementState;
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state->destination = destination;
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state->start = item->pos().toPoint();
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state->item = item;
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state->movement = movement;
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state->curve = d->animator->curve(movement);
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//TODO: variance in times based on the value of animation
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state->frames = frames / 2;
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state->currentFrame = 0;
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state->interval = d->animator->duration(movement) / state->frames;
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state->interval = (state->interval / MIN_TICK_RATE) * MIN_TICK_RATE;
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state->currentInterval = state->interval;
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state->qobj = dynamic_cast<QObject*>(item);
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if (state->qobj) {
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disconnect(state->qobj, SIGNAL(destroyed(QObject*)), this, SLOT(movingItemDestroyed(QObject*)));
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connect(state->qobj, SIGNAL(destroyed(QObject*)), this, SLOT(movingItemDestroyed(QObject*)));
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}
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d->movingItems[item] = state;
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d->performMovement(0, state);
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if (!d->timerId) {
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d->timerId = startTimer(MIN_TICK_RATE);
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d->time.restart();
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}
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}
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Phase::AnimId Phase::customAnimation(int frames, int duration, Phase::CurveShape curve,
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QObject* receiver, const char* slot)
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{
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if (frames < 1 || duration < 1 || !receiver || !slot) {
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return -1;
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}
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CustomAnimationState *state = new CustomAnimationState;
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state->id = ++d->animId;
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state->frames = frames;
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state->currentFrame = 0;
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state->curve = curve;
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state->interval = duration / qreal(state->frames);
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state->interval = qMax( 1, state->interval );
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state->interval = (state->interval / MIN_TICK_RATE) * MIN_TICK_RATE;
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state->currentInterval = state->interval;
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state->receiver = receiver;
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state->slot = qstrdup(slot);
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d->customAnims[state->id] = state;
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disconnect(receiver, SIGNAL(destroyed(QObject*)),
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this, SLOT(customAnimReceiverDestroyed(QObject*)));
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connect(receiver, SIGNAL(destroyed(QObject*)),
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this, SLOT(customAnimReceiverDestroyed(QObject*)));
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QMetaObject::invokeMethod(receiver, slot, Q_ARG(qreal, 0));
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if (!d->timerId) {
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d->timerId = startTimer(MIN_TICK_RATE);
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d->time.restart();
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}
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return state->id;
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}
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void Phase::stopCustomAnimation(AnimId id)
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{
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QMap<AnimId, CustomAnimationState*>::iterator it = d->customAnims.find(id);
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if (it != d->customAnims.end()) {
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delete [] it.value()->slot;
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delete it.value();
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d->customAnims.erase(it);
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}
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//kDebug() << "stopCustomAnimation(AnimId " << id << ") done";
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}
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Phase::AnimId Phase::animateElement(QGraphicsItem *item, ElementAnimation animation)
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{
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//kDebug() << "startElementAnimation(AnimId " << animation << ")";
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ElementAnimationState *state = new ElementAnimationState;
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state->item = item;
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state->curve = d->animator->curve(animation);
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state->animation = animation;
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//TODO: variance in times based on the value of animation
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state->frames = d->animator->framesPerSecond(animation) / 5;
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state->currentFrame = 0;
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state->interval = d->animator->duration(animation) / state->frames;
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state->interval = (state->interval / MIN_TICK_RATE) * MIN_TICK_RATE;
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state->currentInterval = state->interval;
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state->id = ++d->animId;
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state->qobj = dynamic_cast<QObject*>(item);
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if (state->qobj) {
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disconnect(state->qobj, SIGNAL(destroyed(QObject*)), this, SLOT(animatedElementDestroyed(QObject*)));
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connect(state->qobj, SIGNAL(destroyed(QObject*)), this, SLOT(animatedElementDestroyed(QObject*)));
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}
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//kDebug() << "animateElement " << animation << ", interval: " << state->interval << ", frames: " << state->frames;
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bool needTimer = true;
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if (state->frames < 1) {
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state->frames = 1;
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state->currentFrame = 1;
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needTimer = false;
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}
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d->animatedElements[state->id] = state;
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// nasty hack because QGraphicsItem::update isn't virtual!
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// FIXME: remove in 4.1 as we will no longer need the caching in Plasma::Widget with Qt 4.4
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Plasma::Widget *widget = dynamic_cast<Plasma::Widget*>(state->item);
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if (widget) {
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widget->update();
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} else {
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state->item->update();
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}
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//kDebug() << "startElementAnimation(AnimId " << animation << ") returning " << state->id;
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if (needTimer && !d->timerId) {
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// start a 20fps timer;
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//TODO: should be started at the maximum frame rate needed only?
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d->timerId = startTimer(MIN_TICK_RATE);
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d->time.restart();
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}
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return state->id;
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}
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void Phase::stopElementAnimation(AnimId id)
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{
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QMap<AnimId, ElementAnimationState*>::iterator it = d->animatedElements.find(id);
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if (it != d->animatedElements.end()) {
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delete it.value();
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d->animatedElements.erase(it);
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}
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//kDebug() << "stopElementAnimation(AnimId " << id << ") done";
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}
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void Phase::setAnimationPixmap(AnimId id, const QPixmap &pixmap)
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{
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QMap<AnimId, ElementAnimationState*>::iterator it = d->animatedElements.find(id);
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if (it == d->animatedElements.end()) {
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kDebug() << "Phase::setAnimationPixmap(" << id << ") found no entry for it!";
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return;
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}
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it.value()->pixmap = pixmap;
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}
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QPixmap Phase::animationResult(AnimId id)
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{
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QMap<AnimId, ElementAnimationState*>::const_iterator it = d->animatedElements.find(id);
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if (it == d->animatedElements.constEnd()) {
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//kDebug() << "Phase::animationResult(" << id << ") found no entry for it!";
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return QPixmap();
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}
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ElementAnimationState* state = it.value();
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qreal progress = state->frames;
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//kDebug() << "Phase::animationResult(" << id << " at " << progress;
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progress = state->currentFrame / progress;
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progress = qMin(qreal(1.0), qMax(qreal(0.0), progress));
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//kDebug() << "Phase::animationResult(" << id << " at " << progress;
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switch (state->animation) {
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case ElementAppear:
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return d->animator->elementAppear(progress, state->pixmap);
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break;
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case ElementDisappear:
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return d->animator->elementDisappear(progress, state->pixmap);
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break;
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}
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return state->pixmap;
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}
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bool Phase::isAnimating() const
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{
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return (!d->animatedItems.isEmpty() ||
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!d->movingItems.isEmpty() ||
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!d->animatedElements.isEmpty() ||
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!d->customAnims.isEmpty());
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}
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void Phase::timerEvent(QTimerEvent *event)
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{
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Q_UNUSED(event)
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bool animationsRemain = false;
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int elapsed = MIN_TICK_RATE;
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if (d->time.elapsed() > elapsed) {
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elapsed = d->time.elapsed();
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}
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d->time.restart();
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//kDebug() << "timeEvent, elapsed time: " << elapsed;
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foreach (AnimationState* state, d->animatedItems) {
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if (state->currentInterval <= elapsed) {
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// we need to step forward!
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state->currentFrame += (KGlobalSettings::graphicEffectsLevel() & KGlobalSettings::SimpleAnimationEffects) ?
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qMax(1, elapsed / state->interval) : state->frames - state->currentFrame;
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if (state->currentFrame < state->frames) {
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qreal progress = d->calculateProgress(state->frames, state->currentFrame);
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d->performAnimation(progress, state);
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state->currentInterval = state->interval;
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//TODO: calculate a proper interval based on the curve
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state->interval *= 1 - progress;
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animationsRemain = true;
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} else {
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d->performAnimation(1, state);
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d->animatedItems.erase(d->animatedItems.find(state->item));
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emit animationComplete(state->item, state->animation);
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delete state;
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}
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} else {
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state->currentInterval -= elapsed;
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animationsRemain = true;
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}
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}
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foreach (MovementState* state, d->movingItems) {
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if (state->currentInterval <= elapsed) {
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// we need to step forward!
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state->currentFrame += (KGlobalSettings::graphicEffectsLevel() & KGlobalSettings::SimpleAnimationEffects) ?
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qMax(1, elapsed / state->interval) : state->frames - state->currentFrame;
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|
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if (state->currentFrame < state->frames) {
|
|
d->performMovement(d->calculateProgress(state->frames, state->currentFrame), state);
|
|
//TODO: calculate a proper interval based on the curve
|
|
state->currentInterval = state->interval;
|
|
animationsRemain = true;
|
|
} else {
|
|
d->performMovement(1, state);
|
|
d->movingItems.erase(d->movingItems.find(state->item));
|
|
emit movementComplete(state->item);
|
|
delete state;
|
|
}
|
|
} else {
|
|
state->currentInterval -= elapsed;
|
|
animationsRemain = true;
|
|
}
|
|
}
|
|
|
|
foreach (ElementAnimationState* state, d->animatedElements) {
|
|
if (state->currentFrame == state->frames) {
|
|
//kDebug() << "skipping" << state->id << "as its already at frame" << state->currentFrame << "of" << state->frames;
|
|
// since we keep element animations around until they are
|
|
// removed, we will end up with finished animations in the queue;
|
|
// just skip them
|
|
//TODO: should we move them to a separate QMap?
|
|
continue;
|
|
}
|
|
|
|
if (state->currentInterval <= elapsed) {
|
|
// we need to step forward!
|
|
/*kDebug() << "stepping forwards element anim " << state->id << " from " << state->currentFrame
|
|
<< " by " << qMax(1, elapsed / state->interval) << " to "
|
|
<< state->currentFrame + qMax(1, elapsed / state->interval) << endl;*/
|
|
state->currentFrame += (KGlobalSettings::graphicEffectsLevel() & KGlobalSettings::SimpleAnimationEffects) ?
|
|
qMax(1, elapsed / state->interval) : state->frames - state->currentFrame;
|
|
// nasty hack because QGraphicsItem::update isn't virtual!
|
|
// FIXME: remove in 4.1 as we will no longer need the caching in Plasma::Widget with Qt 4.4
|
|
Plasma::Widget *widget = dynamic_cast<Plasma::Widget*>(state->item);
|
|
if (widget) {
|
|
widget->update();
|
|
} else {
|
|
state->item->update();
|
|
}
|
|
|
|
if (state->currentFrame < state->frames) {
|
|
state->currentInterval = state->interval;
|
|
//TODO: calculate a proper interval based on the curve
|
|
state->interval *= 1 - d->calculateProgress(state->frames, state->currentFrame);
|
|
animationsRemain = true;
|
|
} else {
|
|
d->animatedElements.remove(state->id);
|
|
emit elementAnimationComplete(state->id);
|
|
delete state;
|
|
}
|
|
} else {
|
|
state->currentInterval -= elapsed;
|
|
animationsRemain = true;
|
|
}
|
|
}
|
|
|
|
foreach (CustomAnimationState *state, d->customAnims) {
|
|
if (state->currentInterval <= elapsed) {
|
|
// advance the frame
|
|
state->currentFrame += (KGlobalSettings::graphicEffectsLevel() & KGlobalSettings::SimpleAnimationEffects) ?
|
|
qMax(1, elapsed / state->interval) : state->frames - state->currentFrame;
|
|
/*kDebug() << "custom anim for" << state->receiver << "to slot" << state->slot
|
|
<< "with interval of" << state->interval << "at frame" << state->currentFrame;*/
|
|
|
|
if (state->currentFrame < state->frames) {
|
|
//kDebug () << "not the final frame";
|
|
//TODO: calculate a proper interval based on the curve
|
|
state->currentInterval = state->interval;
|
|
animationsRemain = true;
|
|
// signal the object
|
|
QMetaObject::invokeMethod(state->receiver, state->slot,
|
|
Q_ARG(qreal,
|
|
d->calculateProgress(state->frames, state->currentFrame)));
|
|
} else {
|
|
QMetaObject::invokeMethod(state->receiver, state->slot, Q_ARG(qreal, 1));
|
|
d->customAnims.erase(d->customAnims.find(state->id));
|
|
emit customAnimationComplete(state->id);
|
|
delete [] state->slot;
|
|
delete state;
|
|
}
|
|
} else {
|
|
state->currentInterval -= elapsed;
|
|
animationsRemain = true;
|
|
}
|
|
}
|
|
|
|
if (!animationsRemain && d->timerId) {
|
|
killTimer(d->timerId);
|
|
d->timerId = 0;
|
|
}
|
|
}
|
|
|
|
void Phase::init()
|
|
{
|
|
KConfig c("plasmarc");
|
|
KConfigGroup cg(&c, "Phase");
|
|
QString pluginName = cg.readEntry("animator", "default");
|
|
|
|
if (!pluginName.isEmpty()) {
|
|
QString constraint = QString("[X-KDE-PluginInfo-Name] == '%1'").arg(pluginName);
|
|
KService::List offers = KServiceTypeTrader::self()->query("Plasma/Animator", constraint);
|
|
|
|
if (!offers.isEmpty()) {
|
|
QString error;
|
|
d->animator = offers.first()->createInstance<Plasma::Animator>(0, QVariantList(), &error);
|
|
if (!d->animator) {
|
|
kDebug() << "Could not load requested animator " << offers.first() << ". Error given: " << error;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!d->animator) {
|
|
d->animator = new Animator(this);
|
|
}
|
|
}
|
|
|
|
} // namespace Plasma
|
|
|
|
#include <phase.moc>
|