diff -r 5dc02b23752f -r 3e2da88830cd src/imports/particles/qdeclarativeparticles.cpp --- a/src/imports/particles/qdeclarativeparticles.cpp Tue Jul 06 15:10:48 2010 +0300 +++ b/src/imports/particles/qdeclarativeparticles.cpp Wed Aug 18 10:37:55 2010 +0300 @@ -153,11 +153,16 @@ } /*! - \qmlclass ParticleMotionLinear + \qmlclass ParticleMotionLinear QDeclarativeParticleMotionLinear \since 4.7 \brief The ParticleMotionLinear object moves particles linearly. \sa Particles + + This is the default motion, and moves the particles according to the + properties specified in the Particles element. + + It has no further properties. */ /*! @@ -174,10 +179,17 @@ } /*! - \qmlclass ParticleMotionGravity + \qmlclass ParticleMotionGravity QDeclarativeParticleMotionGravity \since 4.7 \brief The ParticleMotionGravity object moves particles towards a point. + This motion attracts the particles to the specified point with the specified acceleration. + To mimic earth gravity, set yattractor to -6360000 and acceleration to 9.8. + + The defaults are all 0, not earth gravity, and so no motion will occur without setting + at least the acceleration property. + + \sa Particles */ @@ -186,6 +198,7 @@ \class QDeclarativeParticleMotionGravity \ingroup group_effects \brief The QDeclarativeParticleMotionGravity class moves the particles towards a point. + */ /*! @@ -241,11 +254,13 @@ void QDeclarativeParticleMotionGravity::advance(QDeclarativeParticle &p, int interval) { - qreal xdiff = p.x - _xAttr; - qreal ydiff = p.y - _yAttr; + qreal xdiff = _xAttr - p.x; + qreal ydiff = _yAttr - p.y; + qreal absXdiff = qAbs(xdiff); + qreal absYdiff = qAbs(ydiff); - qreal xcomp = xdiff / (xdiff + ydiff); - qreal ycomp = ydiff / (xdiff + ydiff); + qreal xcomp = xdiff / (absXdiff + absYdiff); + qreal ycomp = ydiff / (absXdiff + absYdiff); p.x_velocity += xcomp * _accel * interval; p.y_velocity += ycomp * _accel * interval; @@ -255,7 +270,7 @@ } /*! - \qmlclass ParticleMotionWander + \qmlclass ParticleMotionWander QDeclarativeParticleMotionWander \since 4.7 \brief The ParticleMotionWander object moves particles in a somewhat random fashion. @@ -303,14 +318,14 @@ */ /*! - \qmlproperty real QDeclarativeParticleMotionWander::xvariance - \qmlproperty real QDeclarativeParticleMotionWander::yvariance + \qmlproperty real ParticleMotionWander::xvariance + \qmlproperty real ParticleMotionWander::yvariance These properties set the amount to wander in the x and y directions. */ /*! - \qmlproperty real QDeclarativeParticleMotionWander::pace + \qmlproperty real ParticleMotionWander::pace This property holds how quickly the paricles will move from side to side. */ @@ -435,7 +450,7 @@ , lifeSpanDev(1000), fadeInDur(200), fadeOutDur(300) , angle(0), angleDev(0), velocity(0), velocityDev(0), emissionCarry(0.) , addParticleTime(0), addParticleCount(0), lastAdvTime(0) - , motion(0), pendingPixmapCache(false), clock(this) + , motion(0), clock(this) { } @@ -454,7 +469,7 @@ void updateOpacity(QDeclarativeParticle &p, int age); QUrl url; - QPixmap image; + QDeclarativePixmap image; int count; int emissionRate; qreal emissionVariance; @@ -473,7 +488,6 @@ QDeclarativeParticleMotion *motion; QDeclarativeParticlesPainter *paintItem; - bool pendingPixmapCache; QList > bursts;//countLeft, emissionRate pairs QList particles; @@ -619,7 +633,7 @@ } /*! - \qmlclass Particles + \qmlclass Particles QDeclarativeParticles \since 4.7 \brief The Particles object generates and moves particles. \inherits Item @@ -707,9 +721,6 @@ QDeclarativeParticles::~QDeclarativeParticles() { - Q_D(QDeclarativeParticles); - if (d->pendingPixmapCache) - QDeclarativePixmapCache::cancel(d->url, this); } /*! @@ -730,10 +741,8 @@ void QDeclarativeParticles::imageLoaded() { Q_D(QDeclarativeParticles); - d->pendingPixmapCache = false; - QString errorString; - if (QDeclarativePixmapCache::get(d->url, &d->image, &errorString)==QDeclarativePixmapReply::Error) - qmlInfo(this) << errorString; + if (d->image.isError()) + qmlInfo(this) << d->image.error(); d->paintItem->updateSize(); d->paintItem->update(); } @@ -745,27 +754,20 @@ if ((d->url.isEmpty() == name.isEmpty()) && name == d->url) return; - if (d->pendingPixmapCache) { - QDeclarativePixmapCache::cancel(d->url, this); - d->pendingPixmapCache = false; - } if (name.isEmpty()) { d->url = name; - d->image = QPixmap(); + d->image.clear(this); d->paintItem->updateSize(); d->paintItem->update(); } else { d->url = name; Q_ASSERT(!name.isRelative()); - QString errorString; - QDeclarativePixmapReply::Status status = QDeclarativePixmapCache::get(d->url, &d->image, &errorString); - if (status != QDeclarativePixmapReply::Ready && status != QDeclarativePixmapReply::Error) { - QDeclarativePixmapReply *reply = QDeclarativePixmapCache::request(qmlEngine(this), d->url); - connect(reply, SIGNAL(finished()), this, SLOT(imageLoaded())); - d->pendingPixmapCache = true; + d->image.load(qmlEngine(this), d->url); + if (d->image.isLoading()) { + d->image.connectFinished(this, SLOT(imageLoaded())); } else { - if (status == QDeclarativePixmapReply::Error) - qmlInfo(this) << errorString; + if (d->image.isError()) + qmlInfo(this) << d->image.error(); //### unify with imageLoaded d->paintItem->updateSize(); d->paintItem->update(); @@ -1243,7 +1245,7 @@ void QDeclarativeParticlesPainter::updateSize() { - if (!d->_componentComplete) + if (!d->componentComplete) return; const int parentX = parentItem()->x(); @@ -1284,11 +1286,7 @@ const int myX = x() + parentItem()->x(); const int myY = y() + parentItem()->y(); -#if (QT_VERSION >= QT_VERSION_CHECK(4,7,0)) QVarLengthArray pixmapData; -#else - QVarLengthArray pixmapData; -#endif pixmapData.resize(d->particles.count()); const QRectF sourceRect = d->image.rect(); @@ -1296,32 +1294,20 @@ qreal halfPHeight = sourceRect.height()/2.; for (int i = 0; i < d->particles.count(); ++i) { const QDeclarativeParticle &particle = d->particles.at(i); -#if (QT_VERSION >= QT_VERSION_CHECK(4,7,0)) pixmapData[i].x = particle.x - myX + halfPWidth; pixmapData[i].y = particle.y - myY + halfPHeight; -#else - pixmapData[i].point = QPointF(particle.x - myX + halfPWidth, particle.y - myY + halfPHeight); -#endif pixmapData[i].opacity = particle.opacity; //these never change pixmapData[i].rotation = 0; pixmapData[i].scaleX = 1; pixmapData[i].scaleY = 1; -#if (QT_VERSION >= QT_VERSION_CHECK(4,7,0)) pixmapData[i].sourceLeft = sourceRect.left(); pixmapData[i].sourceTop = sourceRect.top(); pixmapData[i].width = sourceRect.width(); pixmapData[i].height = sourceRect.height(); -#else - pixmapData[i].source = sourceRect; -#endif } -#if (QT_VERSION >= QT_VERSION_CHECK(4,7,0)) p->drawPixmapFragments(pixmapData.data(), d->particles.count(), d->image); -#else - qDrawPixmaps(p, pixmapData.data(), d->particles.count(), d->image); -#endif } void QDeclarativeParticles::componentComplete()