Merge branch 'qtquick2' of scm.dev.nokia.troll.no:qt/qtdeclarative-staging into v8

14 files changed, 207 insertions, 87 deletions

diff --git a/src/declarative/debugger/qjsdebuggeragent.cpp b/src/declarative/debugger/qjsdebuggeragent.cpp
index 9c92f27736..3169f91b59 100644
--- a/src/declarative/debugger/qjsdebuggeragent.cpp
+++ b/src/declarative/debugger/qjsdebuggeragent.cpp
@@ -56,7 +56,7 @@ class QJSDebuggerAgentPrivate
 {
 public:
     QJSDebuggerAgentPrivate(QJSDebuggerAgent *q)
-        : q(q), state(NoState)
+        : q(q), state(NoState), isInitialized(false)
     {}
 
     void continueExec();
@@ -79,6 +79,7 @@ public:
     QHash<QString, JSAgentBreakpointData> fileNameToBreakpoints;
     QStringList watchExpressions;
     QSet<qint64> knownObjectIds;
+    bool isInitialized;
 };
 
 namespace {
@@ -252,6 +253,14 @@ QJSDebuggerAgent::~QJSDebuggerAgent()
     delete d;
 }
 
+/*!
+  Indicates whether the agent got the list of breakpoints.
+  */
+bool QJSDebuggerAgent::isInitialized() const
+{
+    return d->isInitialized;
+}
+
 void QJSDebuggerAgent::setBreakpoints(const JSAgentBreakpoints &breakpoints)
 {
     d->breakpoints = breakpoints;
@@ -259,6 +268,8 @@ void QJSDebuggerAgent::setBreakpoints(const JSAgentBreakpoints &breakpoints)
     d->fileNameToBreakpoints.clear();
     foreach (const JSAgentBreakpointData &bp, breakpoints)
         d->fileNameToBreakpoints.insertMulti(fileName(QString::fromUtf8(bp.fileUrl)), bp);
+
+    d->isInitialized = true;
 }
 
 void QJSDebuggerAgent::setWatchExpressions(const QStringList &watchExpressions)
diff --git a/src/declarative/debugger/qjsdebuggeragent_p.h b/src/declarative/debugger/qjsdebuggeragent_p.h
index 5aa3c9ccbc..309588eb2f 100644
--- a/src/declarative/debugger/qjsdebuggeragent_p.h
+++ b/src/declarative/debugger/qjsdebuggeragent_p.h
@@ -145,6 +145,8 @@ public:
     QJSDebuggerAgent(QDeclarativeEngine *engine, QObject *parent = 0);
     ~QJSDebuggerAgent();
 
+    bool isInitialized() const;
+
     void setBreakpoints(const JSAgentBreakpoints &);
     void setWatchExpressions(const QStringList &);
 
diff --git a/src/declarative/debugger/qjsdebugservice.cpp b/src/declarative/debugger/qjsdebugservice.cpp
index 4ce2c906bc..ad84f656f7 100644
--- a/src/declarative/debugger/qjsdebugservice.cpp
+++ b/src/declarative/debugger/qjsdebugservice.cpp
@@ -71,6 +71,16 @@ void QJSDebugService::addEngine(QDeclarativeEngine *engine)
     Q_ASSERT(!m_engines.contains(engine));
 
     m_engines.append(engine);
+
+    if (status() == Enabled && !m_engines.isEmpty() && !m_agent) {
+        m_agent = new QJSDebuggerAgent(engine, engine);
+        connect(m_agent, SIGNAL(stopped(bool,QString)),
+                this, SLOT(executionStopped(bool,QString)));
+
+        while (!m_agent->isInitialized()) {
+            waitForMessage();
+        }
+    }
 }
 
 void QJSDebugService::removeEngine(QDeclarativeEngine *engine)
diff --git a/src/declarative/debugger/qpacketprotocol.cpp b/src/declarative/debugger/qpacketprotocol.cpp
index a40a9ab8a6..9caaa79011 100644
--- a/src/declarative/debugger/qpacketprotocol.cpp
+++ b/src/declarative/debugger/qpacketprotocol.cpp
@@ -198,6 +198,8 @@ public Q_SLOTS:
                     packets.append(inProgress);
                     inProgressSize = -1;
                     inProgress.clear();
+
+                    waitingForPacket = false;
                     emit readyRead();
                 } else
                     return;
diff --git a/src/declarative/graphicsitems/qdeclarativetextinput.cpp b/src/declarative/graphicsitems/qdeclarativetextinput.cpp
index 98ec2050e9..b456d07c02 100644
--- a/src/declarative/graphicsitems/qdeclarativetextinput.cpp
+++ b/src/declarative/graphicsitems/qdeclarativetextinput.cpp
@@ -236,11 +236,11 @@ void QDeclarativeTextInput::setFont(const QFont &font)
 
     if (oldFont != d->font) {
         d->control->setFont(d->font);
+        updateSize();
+        updateCursorRectangle();
         if(d->cursorItem){
             d->cursorItem->setHeight(QFontMetrics(d->font).height());
-            moveCursor();
         }
-        updateSize();
     }
     emit fontChanged(d->sourceFont);
 }
@@ -359,8 +359,7 @@ void QDeclarativeTextInput::setHAlign(HAlignment align)
     bool forceAlign = d->hAlignImplicit && d->effectiveLayoutMirror;
     d->hAlignImplicit = false;
     if (d->setHAlign(align, forceAlign) && isComponentComplete()) {
-        updateRect();
-        d->updateHorizontalScroll();
+        updateCursorRectangle();
     }
 }
 
@@ -369,8 +368,7 @@ void QDeclarativeTextInput::resetHAlign()
     Q_D(QDeclarativeTextInput);
     d->hAlignImplicit = true;
     if (d->determineHorizontalAlignment() && isComponentComplete()) {
-        updateRect();
-        d->updateHorizontalScroll();
+        updateCursorRectangle();
     }
 }
 
@@ -423,8 +421,7 @@ void QDeclarativeTextInputPrivate::mirrorChange()
     Q_Q(QDeclarativeTextInput);
     if (q->isComponentComplete()) {
         if (!hAlignImplicit && (hAlign == QDeclarativeTextInput::AlignRight || hAlign == QDeclarativeTextInput::AlignLeft)) {
-            q->updateRect();
-            updateHorizontalScroll();
+            q->updateCursorRectangle();
             emit q->effectiveHorizontalAlignmentChanged();
         }
     }
@@ -683,7 +680,7 @@ void QDeclarativeTextInput::setAutoScroll(bool b)
     d->autoScroll = b;
     //We need to repaint so that the scrolling is taking into account.
     updateSize(true);
-    d->updateHorizontalScroll();
+    updateCursorRectangle();
     emit autoScrollChanged(d->autoScroll);
 }
 
@@ -947,10 +944,6 @@ void QDeclarativeTextInput::setCursorDelegate(QDeclarativeComponent* c)
     d->cursorComponent = c;
     if(!c){
         //note that the components are owned by something else
-        disconnect(d->control, SIGNAL(cursorPositionChanged(int,int)),
-                this, SLOT(moveCursor()));
-        disconnect(d->control, SIGNAL(updateMicroFocus()),
-                this, SLOT(moveCursor()));
         delete d->cursorItem;
     }else{
         d->startCreatingCursor();
@@ -962,10 +955,6 @@ void QDeclarativeTextInput::setCursorDelegate(QDeclarativeComponent* c)
 void QDeclarativeTextInputPrivate::startCreatingCursor()
 {
     Q_Q(QDeclarativeTextInput);
-    q->connect(control, SIGNAL(cursorPositionChanged(int,int)),
-               q, SLOT(moveCursor()), Qt::UniqueConnection);
-    q->connect(control, SIGNAL(updateMicroFocus()),
-            q, SLOT(moveCursor()), Qt::UniqueConnection);
     if(cursorComponent->isReady()){
         q->createCursor();
     }else if(cursorComponent->isLoading()){
@@ -1001,15 +990,6 @@ void QDeclarativeTextInput::createCursor()
     d->cursorItem->setHeight(d->control->height()-1); // -1 to counter QLineControl's +1 which is not consistent with Text.
 }
 
-void QDeclarativeTextInput::moveCursor()
-{
-    Q_D(QDeclarativeTextInput);
-    if(!d->cursorItem)
-        return;
-    d->updateHorizontalScroll();
-    d->cursorItem->setX(d->control->cursorToX() - d->hscroll);
-}
-
 /*!
     \qmlmethod rect TextInput::positionToRectangle(int pos)
 
@@ -1118,8 +1098,6 @@ void QDeclarativeTextInput::inputMethodEvent(QInputMethodEvent *ev)
             ev->ignore();
         } else {
             d->control->processInputMethodEvent(ev);
-            updateSize();
-            d->updateHorizontalScroll();
         }
     }
     if (!ev->isAccepted())
@@ -1297,7 +1275,7 @@ void QDeclarativeTextInput::geometryChanged(const QRectF &newGeometry,
     Q_D(QDeclarativeTextInput);
     if (newGeometry.width() != oldGeometry.width()) {
         updateSize();
-        d->updateHorizontalScroll();
+        updateCursorRectangle();
     }
     QDeclarativePaintedItem::geometryChanged(newGeometry, oldGeometry);
 }
@@ -1643,7 +1621,6 @@ void QDeclarativeTextInput::moveCursorSelection(int position)
 {
     Q_D(QDeclarativeTextInput);
     d->control->moveCursor(position, true);
-    d->updateHorizontalScroll();
 }
 
 /*!
@@ -1901,7 +1878,7 @@ void QDeclarativeTextInputPrivate::init()
     canPaste = !control->isReadOnly() && QApplication::clipboard()->text().length() != 0;
 #endif // QT_NO_CLIPBOARD
     q->connect(control, SIGNAL(updateMicroFocus()),
-               q, SLOT(updateMicroFocus()));
+               q, SLOT(updateCursorRectangle()));
     q->connect(control, SIGNAL(displayTextChanged(QString)),
                q, SLOT(updateRect()));
     q->updateSize();
@@ -1917,9 +1894,7 @@ void QDeclarativeTextInputPrivate::init()
 void QDeclarativeTextInput::cursorPosChanged()
 {
     Q_D(QDeclarativeTextInput);
-    d->updateHorizontalScroll();
-    updateRect();//TODO: Only update rect between pos's
-    updateMicroFocus();
+    updateCursorRectangle();
     emit cursorPositionChanged();
     d->control->resetCursorBlinkTimer();
 
@@ -1935,6 +1910,17 @@ void QDeclarativeTextInput::cursorPosChanged()
     }
 }
 
+void QDeclarativeTextInput::updateCursorRectangle()
+{
+    Q_D(QDeclarativeTextInput);
+    d->updateHorizontalScroll();
+    updateRect();//TODO: Only update rect between pos's
+    updateMicroFocus();
+    emit cursorRectangleChanged();
+    if (d->cursorItem)
+        d->cursorItem->setX(d->control->cursorToX() - d->hscroll);
+}
+
 void QDeclarativeTextInput::selectionChanged()
 {
     Q_D(QDeclarativeTextInput);
diff --git a/src/declarative/graphicsitems/qdeclarativetextinput_p.h b/src/declarative/graphicsitems/qdeclarativetextinput_p.h
index aaf8859150..8b7fff9cfb 100644
--- a/src/declarative/graphicsitems/qdeclarativetextinput_p.h
+++ b/src/declarative/graphicsitems/qdeclarativetextinput_p.h
@@ -75,7 +75,7 @@ class Q_AUTOTEST_EXPORT QDeclarativeTextInput : public QDeclarativeImplicitSizeP
     Q_PROPERTY(bool readOnly READ isReadOnly WRITE setReadOnly NOTIFY readOnlyChanged)
     Q_PROPERTY(bool cursorVisible READ isCursorVisible WRITE setCursorVisible NOTIFY cursorVisibleChanged)
     Q_PROPERTY(int cursorPosition READ cursorPosition WRITE setCursorPosition NOTIFY cursorPositionChanged)
-    Q_PROPERTY(QRect cursorRectangle READ cursorRectangle NOTIFY cursorPositionChanged)
+    Q_PROPERTY(QRect cursorRectangle READ cursorRectangle NOTIFY cursorRectangleChanged)
     Q_PROPERTY(QDeclarativeComponent *cursorDelegate READ cursorDelegate WRITE setCursorDelegate NOTIFY cursorDelegateChanged)
     Q_PROPERTY(int selectionStart READ selectionStart NOTIFY selectionStartChanged)
     Q_PROPERTY(int selectionEnd READ selectionEnd NOTIFY selectionEndChanged)
@@ -221,6 +221,7 @@ public:
 Q_SIGNALS:
     void textChanged();
     void cursorPositionChanged();
+    void cursorRectangleChanged();
     void selectionStartChanged();
     void selectionEndChanged();
     void selectedTextChanged();
@@ -279,8 +280,8 @@ private Q_SLOTS:
     void q_textChanged();
     void selectionChanged();
     void createCursor();
-    void moveCursor();
     void cursorPosChanged();
+    void updateCursorRectangle();
     void updateRect(const QRect &r = QRect());
     void q_canPasteChanged();
 
diff --git a/src/declarative/items/qsgcanvas.cpp b/src/declarative/items/qsgcanvas.cpp
index 3a88fbb790..fee58b87a8 100644
--- a/src/declarative/items/qsgcanvas.cpp
+++ b/src/declarative/items/qsgcanvas.cpp
@@ -174,7 +174,7 @@ void QSGCanvas::paintEvent(QPaintEvent *)
         int lastFrame = frameTimer.restart();
 #endif
 
-        if (d->animationDriver->isRunning())
+        if (d->animationDriver && d->animationDriver->isRunning())
             d->animationDriver->advance();
 
 #ifdef FRAME_TIMING
@@ -222,10 +222,10 @@ void QSGCanvas::paintEvent(QPaintEvent *)
 
         QDeclarativeDebugTrace::endRange(QDeclarativeDebugTrace::Painting);
 
-        if (d->animationDriver->isRunning())
+        if (d->animationDriver && d->animationDriver->isRunning())
             update();
     } else {
-        if (isUpdatesEnabled()) {
+        if (updatesEnabled()) {
             d->thread->paint();
             setUpdatesEnabled(false);
         }
@@ -252,12 +252,14 @@ void QSGCanvas::showEvent(QShowEvent *e)
 
     if (!d->contextFailed) {
         if (d->threadedRendering) {
-            if (!d->animationDriver) {
-                d->animationDriver = d->context->createAnimationDriver(this);
-                connect(d->animationDriver, SIGNAL(started()), d->thread, SLOT(animationStarted()), Qt::DirectConnection);
-                connect(d->animationDriver, SIGNAL(stopped()), d->thread, SLOT(animationStopped()), Qt::DirectConnection);
+            if (d->vsyncAnimations) {
+                if (!d->animationDriver) {
+                    d->animationDriver = d->context->createAnimationDriver(this);
+                    connect(d->animationDriver, SIGNAL(started()), d->thread, SLOT(animationStarted()), Qt::DirectConnection);
+                    connect(d->animationDriver, SIGNAL(stopped()), d->thread, SLOT(animationStopped()), Qt::DirectConnection);
+                }
+                d->animationDriver->install();
             }
-            d->animationDriver->install();
             d->thread->startRenderThread();
             setUpdatesEnabled(true);
         } else {
@@ -265,11 +267,14 @@ void QSGCanvas::showEvent(QShowEvent *e)
 
             if (!d->context || !d->context->isReady()) {
                 d->initializeSceneGraph();
-                d->animationDriver = d->context->createAnimationDriver(this);
-                connect(d->animationDriver, SIGNAL(started()), this, SLOT(update()));
+                if (d->vsyncAnimations) {
+                    d->animationDriver = d->context->createAnimationDriver(this);
+                    connect(d->animationDriver, SIGNAL(started()), this, SLOT(update()));
+                }
             }
 
-            d->animationDriver->install();
+            if (d->animationDriver)
+                d->animationDriver->install();
         }
     }
 }
@@ -283,12 +288,52 @@ void QSGCanvas::hideEvent(QHideEvent *e)
             d->thread->stopRenderThread();
         }
 
-        d->animationDriver->uninstall();
+        if (d->animationDriver)
+            d->animationDriver->uninstall();
     }
 
     QGLWidget::hideEvent(e);
 }
 
+
+
+/*!
+    Sets weither this canvas should use vsync driven animations.
+
+    This option can only be set on one single QSGCanvas, and that it's
+    vsync signal will then be used to drive all animations in the
+    process.
+
+    This feature is primarily useful for single QSGCanvas, QML-only
+    applications.
+
+    \warning Enabling vsync on multiple QSGCanvas instances has
+    undefined behavior.
+ */
+void QSGCanvas::setVSyncAnimations(bool enabled)
+{
+    Q_D(QSGCanvas);
+    if (isVisible()) {
+        qWarning("QSGCanvas::setVSyncAnimations: Cannot be changed when widget is shown");
+        return;
+    }
+    d->vsyncAnimations = enabled;
+}
+
+
+
+/*!
+    Returns true if this canvas should use vsync driven animations;
+    otherwise returns false.
+ */
+bool QSGCanvas::vsyncAnimations() const
+{
+    Q_D(const QSGCanvas);
+    return d->vsyncAnimations;
+}
+
+
+
 void QSGCanvas::focusOutEvent(QFocusEvent *event)
 {
     Q_D(QSGCanvas);
@@ -384,6 +429,7 @@ QSGCanvasPrivate::QSGCanvasPrivate()
     , threadedRendering(false)
     , animationRunning(false)
     , renderThreadAwakened(false)
+    , vsyncAnimations(false)
     , thread(0)
     , animationDriver(0)
 {
@@ -958,7 +1004,7 @@ bool QSGCanvas::event(QEvent *e)
 
         d->thread->syncAlreadyHappened = false;
 
-        if (d->animationRunning) {
+        if (d->animationRunning && d->animationDriver) {
 #ifdef THREAD_DEBUG
             qDebug("GUI: Advancing animations...\n");
 #endif
@@ -2053,7 +2099,7 @@ void QSGCanvasRenderThread::run()
         // but we don't want to lock an extra time.
         wake();
 
-        if (!d->animationRunning && !isExternalUpdatePending) {
+        if (!d->animationRunning && !isExternalUpdatePending && !shouldExit) {
 #ifdef THREAD_DEBUG
             printf("                RenderThread: nothing to do, going to sleep...\n");
 #endif
diff --git a/src/declarative/items/qsgcanvas.h b/src/declarative/items/qsgcanvas.h
index d0d0c79d5e..8913e41b86 100644
--- a/src/declarative/items/qsgcanvas.h
+++ b/src/declarative/items/qsgcanvas.h
@@ -75,6 +75,9 @@ public:
 
     QSGEngine *sceneGraphEngine() const;
 
+    void setVSyncAnimations(bool enabled);
+    bool vsyncAnimations() const;
+
     QImage grabFrameBuffer();
 
 Q_SIGNALS:
diff --git a/src/declarative/items/qsgcanvas_p.h b/src/declarative/items/qsgcanvas_p.h
index 9b2683cc38..7f7182ee52 100644
--- a/src/declarative/items/qsgcanvas_p.h
+++ b/src/declarative/items/qsgcanvas_p.h
@@ -160,6 +160,8 @@ public:
     uint animationRunning: 1;
     uint renderThreadAwakened : 1;
 
+    uint vsyncAnimations : 1;
+
     QSGCanvasRenderThread *thread;
     QSize widgetSize;
     QSize viewportSize;
diff --git a/src/declarative/particles/qsgitemparticle.cpp b/src/declarative/particles/qsgitemparticle.cpp
index 819c823155..42f0062148 100644
--- a/src/declarative/particles/qsgitemparticle.cpp
+++ b/src/declarative/particles/qsgitemparticle.cpp
@@ -42,14 +42,22 @@
 #include "qsgitemparticle_p.h"
 #include <QtDeclarative/private/qsgvisualitemmodel_p.h>
 #include <qsgnode.h>
+#include <QTimer>
+#include <QDeclarativeComponent>
 #include <QDebug>
 
 QT_BEGIN_NAMESPACE
 
 QSGItemParticle::QSGItemParticle(QSGItem *parent) :
-    QSGParticlePainter(parent), m_fade(true)
+    QSGParticlePainter(parent), m_fade(true), m_delegate(0)
 {
     setFlag(QSGItem::ItemHasContents);
+    QTimer* manageDelegates = new QTimer(this);//TODO: don't leak
+    connect(manageDelegates, SIGNAL(timeout()),
+            this, SLOT(tick()));
+    manageDelegates->setInterval(16);
+    manageDelegates->setSingleShot(false);
+    manageDelegates->start();
 }
 
 
@@ -79,33 +87,54 @@ void QSGItemParticle::give(QSGItem *item)
 
 void QSGItemParticle::load(QSGParticleData* d)
 {
-    if(m_pendingItems.isEmpty())
-        return;
     int pos = particleTypeIndex(d);
-    if(m_items[pos]){
-        if(m_stasis.contains(m_items[pos]))
-            qWarning() << "Current model particles prefers overwrite:false";
-        //remove old item from the particle that is dying to make room for this one
-        m_items[pos]->setOpacity(0.);
+    m_data[pos] = d;
+    m_loadables << pos;
+}
+
+void QSGItemParticle::tick()
+{
+    foreach(QSGItem* item, m_deletables){
+        if(m_fade)
+            item->setOpacity(0.);
         QSGItemParticleAttached* mpa;
-        if((mpa = qobject_cast<QSGItemParticleAttached*>(qmlAttachedPropertiesObject<QSGItemParticle>(m_items[pos], false))))
+        if((mpa = qobject_cast<QSGItemParticleAttached*>(qmlAttachedPropertiesObject<QSGItemParticle>(item))))
             mpa->detach();//reparent as well?
-        m_items[pos] = 0;
-        m_data[pos] = 0;
+        //TODO: Delete iff we created it
         m_activeCount--;
     }
-    m_items[pos] = m_pendingItems.front();
-    m_pendingItems.pop_front();
-    m_items[pos]->setX(d->curX() - m_items[pos]->width()/2);
-    m_items[pos]->setY(d->curY() - m_items[pos]->height()/2);
-    QSGItemParticleAttached* mpa = qobject_cast<QSGItemParticleAttached*>(qmlAttachedPropertiesObject<QSGItemParticle>(m_items[pos]));
-    if(mpa){
-        mpa->m_mp = this;
-        mpa->attach();
+    m_deletables.clear();
+
+    foreach(int pos, m_loadables){
+        if(m_stasis.contains(m_items[pos]))
+            qWarning() << "Current model particles prefers overwrite:false";
+        //remove old item from the particle that is dying to make room for this one
+        if(m_items[pos]){
+            m_deletables << m_items[pos];
+            m_activeCount--;
+        }
+        m_items[pos] = 0;
+        if(!m_pendingItems.isEmpty()){
+            m_items[pos] = m_pendingItems.front();
+            m_pendingItems.pop_front();
+        }else if(m_delegate){
+            m_items[pos] = qobject_cast<QSGItem*>(m_delegate->create(qmlContext(this)));
+        }
+        if(m_items[pos]){
+            m_items[pos]->setX(m_data[pos]->curX() - m_items[pos]->width()/2);//TODO: adjust for system?
+            m_items[pos]->setY(m_data[pos]->curY() - m_items[pos]->height()/2);
+            QSGItemParticleAttached* mpa = qobject_cast<QSGItemParticleAttached*>(qmlAttachedPropertiesObject<QSGItemParticle>(m_items[pos]));
+            if(mpa){
+                mpa->m_mp = this;
+                mpa->attach();
+            }
+            m_items[pos]->setParentItem(this);
+            if(m_fade)
+                m_items[pos]->setOpacity(0.);
+            m_activeCount++;
+        }
     }
-    m_items[pos]->setParentItem(this);
-    m_data[pos] = d;
-    m_activeCount++;
+    m_loadables.clear();
 }
 
 void QSGItemParticle::reload(QSGParticleData* d)
@@ -173,10 +202,7 @@ void QSGItemParticle::prepareNextFrame()
             continue;
         }
         if(t >= 1.0){//Usually happens from load
-            item->setOpacity(0.);
-            QSGItemParticleAttached* mpa;
-            if((mpa = qobject_cast<QSGItemParticleAttached*>(qmlAttachedPropertiesObject<QSGItemParticle>(m_items[i]))))
-                mpa->detach();//reparent as well?
+            m_deletables << item;
             m_items[i] = 0;
             m_data[i] = 0;
             m_activeCount--;
diff --git a/src/declarative/particles/qsgitemparticle_p.h b/src/declarative/particles/qsgitemparticle_p.h
index fa3516b631..3b7db519de 100644
--- a/src/declarative/particles/qsgitemparticle_p.h
+++ b/src/declarative/particles/qsgitemparticle_p.h
@@ -55,8 +55,8 @@ class QSGItemParticleAttached;
 class QSGItemParticle : public QSGParticlePainter
 {
     Q_OBJECT
-
     Q_PROPERTY(bool fade READ fade WRITE setFade NOTIFY fadeChanged)
+    Q_PROPERTY(QDeclarativeComponent* delegate READ delegate WRITE setDelegate NOTIFY delegateChanged)
 public:
     explicit QSGItemParticle(QSGItem *parent = 0);
 
@@ -69,9 +69,16 @@ public:
     virtual int count();
 
     static QSGItemParticleAttached *qmlAttachedProperties(QObject *object);
+    QDeclarativeComponent* delegate() const
+    {
+        return m_delegate;
+    }
+
 signals:
     void fadeChanged();
 
+    void delegateChanged(QDeclarativeComponent* arg);
+
 public slots:
     //TODO: Add a follow mode, where moving the delegate causes the logical particle to go with it?
     void freeze(QSGItem* item);
@@ -80,11 +87,22 @@ public slots:
     void give(QSGItem* item);//give from modelparticle
 
     void setFade(bool arg){if(arg == m_fade) return; m_fade = arg; emit fadeChanged();}
+    void setDelegate(QDeclarativeComponent* arg)
+    {
+        if (m_delegate != arg) {
+            m_delegate = arg;
+            emit delegateChanged(arg);
+        }
+    }
+
 protected:
     virtual void reset();
     void prepareNextFrame();
+private slots:
+    void tick();
 private:
-    QList<QPointer<QSGItem> > m_deletables;
+    QList<QSGItem* > m_deletables;
+    QList< int > m_loadables;
     int m_particleCount;
     bool m_fade;
 
@@ -96,6 +114,7 @@ private:
     QSet<QSGItem*> m_stasis;
     qreal m_lastT;
     int m_activeCount;
+    QDeclarativeComponent* m_delegate;
 };
 
 class QSGItemParticleAttached : public QObject
diff --git a/src/declarative/particles/qsgmodelparticle.cpp b/src/declarative/particles/qsgmodelparticle.cpp
index 704b9a298c..f87c0d31b9 100644
--- a/src/declarative/particles/qsgmodelparticle.cpp
+++ b/src/declarative/particles/qsgmodelparticle.cpp
@@ -178,18 +178,22 @@ void QSGModelParticle::processPending()
         item->setOpacity(0.);
         m_model->release(item);
     }
+    m_deletables.clear();
 
     foreach(int pos, m_requests){
-        m_items[pos] = m_model->item(m_available.first());
-        m_idx[pos] = m_available.first();
-        m_available.pop_front();
-        QSGModelParticleAttached* mpa = qobject_cast<QSGModelParticleAttached*>(qmlAttachedPropertiesObject<QSGModelParticle>(m_items[pos]));
-        if(mpa){
-            mpa->m_mp = this;
-            mpa->attach();
+        if(!m_available.isEmpty()){
+            m_items[pos] = m_model->item(m_available.first());
+            m_idx[pos] = m_available.first();
+            m_available.pop_front();
+            QSGModelParticleAttached* mpa = qobject_cast<QSGModelParticleAttached*>(qmlAttachedPropertiesObject<QSGModelParticle>(m_items[pos]));
+            if(mpa){
+                mpa->m_mp = this;
+                mpa->attach();
+            }
+            m_items[pos]->setParentItem(this);
         }
-        m_items[pos]->setParentItem(this);
     }
+    m_requests.clear();
 }
 
 void QSGModelParticle::reload(QSGParticleData* d)
diff --git a/src/declarative/particles/qsgparticleemitter.cpp b/src/declarative/particles/qsgparticleemitter.cpp
index 20f3c6bb4b..143338f798 100644
--- a/src/declarative/particles/qsgparticleemitter.cpp
+++ b/src/declarative/particles/qsgparticleemitter.cpp
@@ -121,6 +121,13 @@ void QSGParticleEmitter::burst(int num)
     m_burstQueue << qMakePair(num, QPointF(x(), y()));
 }
 
+void QSGParticleEmitter::burst(int num, qreal x, qreal y)
+{
+    if(!particleCount())
+        qWarning() << "burst called on an emitter with a particle count of zero";
+    m_burstQueue << qMakePair(num, QPointF(x, y));
+}
+
 void QSGParticleEmitter::setMaxParticleCount(int arg)
 {
     if (m_maxParticleCount != arg) {
diff --git a/src/declarative/particles/qsgparticleemitter_p.h b/src/declarative/particles/qsgparticleemitter_p.h
index 9fafd9d43d..65aca0c83e 100644
--- a/src/declarative/particles/qsgparticleemitter_p.h
+++ b/src/declarative/particles/qsgparticleemitter_p.h
@@ -142,6 +142,7 @@ signals:
 public slots:
     void pulse(qreal seconds);
     void burst(int num);
+    void burst(int num, qreal x, qreal y);
 
     void setEmitting(bool arg);