/****************************************************************************
**
** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (developer.feedback@nokia.com)
**
** This file is part of the HbCore module of the UI Extensions for Mobile.
**
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at developer.feedback@nokia.com.
**
****************************************************************************/
#include <hbglobal.h>
#ifdef HB_FILTER_EFFECTS
#include "hbeffectfilter_p.h"
#include "hbeffectgroup_p.h"
#include "hbeffectdef_p.h"
#include "hbeffectutils_p.h"
#include "hbeffectfxmldata_p.h"
#include <QGraphicsItem>
#include <QtDebug>
HbEffectFilterAnimation::HbEffectFilterAnimation(HbEffectFilter *effect,
int duration,
HbEffectGroup *group)
: HbEffectAnimation(group),
mEffect(effect)
{
setDuration(duration);
}
HbEffectFilterAnimation::~HbEffectFilterAnimation()
{
}
void HbEffectFilterAnimation::handleAnimationUpdate(const QVariant &value)
{
Q_UNUSED(value);
// Effect instance updates the vgEffect for all the filter animations
mEffect->updateFilterEffect();
}
void HbEffectFilterAnimation::handleAnimationFinish()
{
// This informs the effect group when all the animations have finished
mEffect->handleAnimationFinished();
}
HbEffectColorAnimation::HbEffectColorAnimation(HbEffectFilter *effect, int duration, HbEffectGroup *group)
: HbEffectFilterAnimation(effect, duration, group)
{
}
HbEffectColorAnimation::~HbEffectColorAnimation()
{
}
QVariant HbEffectColorAnimation::interpolated(const QVariant &from, const QVariant &to, qreal progress) const
{
QColor ret;
// Interpolate R,G,B and A attributes of the color separately
QColor fromColor = qVariantValue<QColor>(from);
QColor toColor = qVariantValue<QColor>(to);
int fromValue = fromColor.red();
int toValue = toColor.red();
ret.setRed(fromValue + (int)(mCurve.valueForProgress(progress) * (toValue - fromValue)));
fromValue = fromColor.green();
toValue = toColor.green();
ret.setGreen(fromValue + (int)(mCurve.valueForProgress(progress) * (toValue - fromValue)));
fromValue = fromColor.blue();
toValue = toColor.blue();
ret.setBlue(fromValue + (int)(mCurve.valueForProgress(progress) * (toValue - fromValue)));
fromValue = fromColor.alpha();
toValue = toColor.alpha();
ret.setAlpha(fromValue + (int)(mCurve.valueForProgress(progress) * (toValue - fromValue)));
return ret;
}
// -----------------------------------------------------------------------------
// HbEffectFilter
HbEffectFilter::HbEffectFilter(int /*startTime*/, QGraphicsItem *item, HbEffectGroup *group)
: HbEffectAbstract(0, item, group),
mEffectDefined(false),
mCanceled(false)
{
}
HbEffectFilter::~HbEffectFilter()
{
Q_FOREACH(HbEffectFilterAnimation *anim, mAnimations) {
anim->stop();
delete anim;
}
}
void HbEffectFilter::init()
{
}
void HbEffectFilter::setStartState(QTransform &/*transform*/)
{
}
void HbEffectFilter::start()
{
mCanceled = false;
// Activate openvg effect in the graphics item if there is an effect defined
if (mEffectDefined) {
group()->activateVgEffect();
}
if (mAnimations.count()) {
Q_FOREACH(HbEffectFilterAnimation *anim, mAnimations) {
anim->stop(); // rewind the animation before starting again
anim->setCurrentTime(0);
anim->mFinished = false;
anim->start();
}
}
// If there are no animations, handle finish immediately. This informs the effect group.
else {
handleAnimationFinished();
}
}
/* Cancels the effect animation and sets the animation end state immediately.
*/
void HbEffectFilter::cancel(QTransform &transform, bool itemIsValid)
{
Q_UNUSED(transform)
Q_UNUSED(itemIsValid)
mCanceled = true;
// Put animations in their end state to reach the end state of the effect.
Q_FOREACH(HbEffectFilterAnimation *anim, mAnimations) {
anim->stop();
anim->setCurrentTime(anim->duration());
anim->mFinished = true;
}
// Update the filter effect to reflect the end state of the effect
if (mAnimations.count()) {
// This updates all the animated values
mAnimations.at(0)->mEffect->updateFilterEffect();
}
}
void HbEffectFilter::updateItemTransform(QTransform &/*transform*/)
{
// Not a transform effect so nothing here
}
void HbEffectFilter::pause()
{
Q_FOREACH(HbEffectFilterAnimation *anim, mAnimations) {
if (anim->state() == QAbstractAnimation::Running) {
anim->pause();
}
}
}
void HbEffectFilter::resume()
{
Q_FOREACH(HbEffectFilterAnimation *anim, mAnimations) {
if (anim->state() == QAbstractAnimation::Paused) {
anim->resume();
}
}
}
HbEffectFilterAnimation *HbEffectFilter::createAnimation(
const HbEffectFxmlParamData ¶m,
qreal &startValue,
qreal &endValue,
HbEffectGroup *group)
{
HbEffectFilterAnimation *anim = 0;
// Replace default values with parameter's values
if (param.getValue(startValue)) {
mEffectDefined = true;
}
endValue = startValue;
QList<HbKeyFrame> keyFrameList = param.keyFrames();
// duration and curvepath
int duration = 0;
HbEffectUtils::resolveFxmlDuration(duration, param);
QEasingCurve curve = QEasingCurve::Linear;
HbEffectUtils::resolveFxmlCurveShape(curve, param);
// Create animation if the duration was defined
if (duration > 0) {
mEffectDefined = true;
anim = new HbEffectFilterAnimation(this, duration, group);
mAnimations.append(anim);
// Go through keyframes
foreach(const HbKeyFrame &kf, keyFrameList) {
if (HbEffectUtils::fuzzyIsNull(kf.pos)) {
startValue = kf.val;
}
else if (HbEffectUtils::fuzzyIsOneOrGreater(kf.pos)) {
endValue = kf.val;
}
// Set keyframe in animation
else {
anim->setKeyValueAt(kf.pos, QVariant(kf.val));
}
}
anim->setStartValue(QVariant(startValue));
anim->setEndValue(QVariant(endValue));
anim->mCurve = curve;
// Get loop parameters
anim->addLooping(¶m);
}
// Return animation instance or NULL if not created
return anim;
}
HbEffectColorAnimation *HbEffectFilter::createAnimation(
const HbEffectFxmlParamData ¶m,
QColor &startValue,
QColor &endValue,
HbEffectGroup *group)
{
HbEffectColorAnimation *anim = 0;
// Replace default values with parameter's values
QString colorString = param.getValue();
if (!colorString.isEmpty()) {
startValue.setNamedColor(colorString);
endValue = startValue;
if (startValue.isValid()) {
mEffectDefined = true;
}
}
QList<HbKeyFrame> keyFrameList = param.keyFrames();
// duration and curvepath
int duration = 0;
HbEffectUtils::resolveFxmlDuration(duration, param);
QEasingCurve curve = QEasingCurve::Linear;
HbEffectUtils::resolveFxmlCurveShape(curve, param);
// Create animation if the duration was defined
if (duration > 0) {
mEffectDefined = true;
anim = new HbEffectColorAnimation(this, duration, group);
mAnimations.append(anim);
// Go through keyframes
foreach(const HbKeyFrame &kf, keyFrameList) {
if (HbEffectUtils::fuzzyIsNull(kf.pos)) {
startValue.setNamedColor(kf.stringValue);
}
else if (HbEffectUtils::fuzzyIsOneOrGreater(kf.pos)) {
endValue.setNamedColor(kf.stringValue);
}
// Set keyframe in animation
else {
QColor c(kf.stringValue);
anim->setKeyValueAt(kf.pos, QVariant(c));
}
}
anim->setStartValue(QVariant(startValue));
anim->setEndValue(QVariant(endValue));
anim->mCurve = curve;
// Get loop parameters
anim->addLooping(¶m);
}
// Return animation instance or NULL if not created
return anim;
}
void HbEffectFilter::handleAnimationFinished()
{
bool allFinished = true;
Q_FOREACH(HbEffectFilterAnimation *anim, mAnimations) {
if (!anim->mFinished) {
allFinished = false;
}
}
// Inform the effect group that the whole filter effect has finished.
// If the effect was canceled, the effect group already takes care of finishing the effect.
if (allFinished && !mCanceled) {
// Make sure animations are in their end value to reach the end state of the effect.
// Sometimes QVariantAnimation does not update the animation with its end value before sending finished signal.
Q_FOREACH(HbEffectFilterAnimation *anim, mAnimations) {
anim->stop();
anim->setCurrentTime(anim->duration());
}
Hb::EffectEvent reason = mAnimations.count() ? Hb::EffectFinished : Hb::EffectNotStarted;
group()->effectFinished(reason);
}
}
#endif