QmlProfiler: Remove some useless signals and QML variables

We don't want to emit a signal for each event being added. That's
expensive and doesn't serve any purpose. We also don't have to save
the availability of data in QML as it isn't used anywhere.

Change-Id: I32db06a1955a7cfd6b569f50b81bf5278333b622
Reviewed-by: Kai Koehne <kai.koehne@digia.com>

src/plugins/qmlprofiler/abstracttimelinemodel.h

@@ -101,7 +101,6 @@ public:
     Q_INVOKABLE virtual int getEventIdForLocation(const QString &filename, int line, int column) const = 0;
 
 signals:
-    void countChanged();
     void dataAvailable();
     void stateChanged();
     void emptyChanged();

src/plugins/qmlprofiler/qml/MainView.qml

@@ -38,9 +38,7 @@ Rectangle {
 
     property int singleRowHeight: 30
 
-    property bool dataAvailable: true
     property int eventCount: 0
-    property real progress: 0
 
     property alias selectionLocked : view.selectionLocked
     signal updateLockButton
@@ -88,39 +86,14 @@ Rectangle {
 
     Connections {
         target: qmlProfilerModelProxy
-        onCountChanged: {
-            eventCount = qmlProfilerModelProxy.count();
-            if (eventCount === 0)
-                root.clearAll();
-            if (eventCount > 1) {
-                root.progress = Math.min(1.0,
-                    (qmlProfilerModelProxy.lastTimeMark() -
-                    qmlProfilerModelProxy.traceStartTime()) / root.elapsedTime * 1e-9 );
-            } else {
-                root.progress = 0;
-            }
-        }
         onStateChanged: {
-            switch (qmlProfilerModelProxy.getState()) {
-            case 0: {
+            // Clear if model is empty.
+            if (qmlProfilerModelProxy.getState() === 0)
                 root.clearAll();
-                break;
-            }
-            case 1: {
-                root.dataAvailable = false;
-                break;
-            }
-            case 2: {
-                root.progress = 0.9; // jump to 90%
-                break;
-            }
-            }
         }
         onDataAvailable: {
             view.clearData();
             zoomControl.setRange(0,0);
-            progress = 1.0;
-            dataAvailable = true;
             view.visible = true;
             view.requestPaint();
             zoomControl.setRange(qmlProfilerModelProxy.traceStartTime(),
@@ -142,7 +115,6 @@ Rectangle {
 
     function clearData() {
         view.clearData();
-        dataAvailable = false;
         appKilled = false;
         eventCount = 0;
         hideRangeDetails();

src/plugins/qmlprofiler/qmlprofilermodelmanager.cpp

@@ -148,6 +148,7 @@ public:
     QVector <int> partialCountWeights;
     int totalWeight;
     double progress;
+    double previousProgress;
     qint64 estimatedTime;
 
     // file to load
@@ -227,7 +228,11 @@ void QmlProfilerModelManager::modelProxyCountUpdated(int proxyId, qint64 count,
 
     d->progress += d->partialCounts[proxyId] * d->partialCountWeights[proxyId] /
             d->totalWeight;
-    emit progressChanged();
+
+    if (d->progress - d->previousProgress > 0.01) {
+        d->previousProgress = d->progress;
+        emit progressChanged();
+    }
 }
 
 qint64 QmlProfilerModelManager::estimatedProfilingTime() const
@@ -258,7 +263,6 @@ void QmlProfilerModelManager::addQmlEvent(int type,
 
     QTC_ASSERT(state() == QmlProfilerDataState::AcquiringData, /**/);
     d->model->addQmlEvent(type, bindingType, startTime, length, data, location, ndata1, ndata2, ndata3, ndata4, ndata5);
-    emit countChanged();
 }
 
 void QmlProfilerModelManager::addV8Event(int depth, const QString &function, const QString &filename,
@@ -374,11 +378,11 @@ void QmlProfilerModelManager::clear()
     for (int i = 0; i < d->partialCounts.count(); i++)
         d->partialCounts[i] = 0;
     d->progress = 0;
+    d->previousProgress = 0;
     d->model->clear();
     d->v8Model->clear();
     d->traceTime->clear();
 
-    emit countChanged();
     setState(QmlProfilerDataState::Empty);
 }
 

src/plugins/qmlprofiler/qmlprofilermodelmanager.h

@@ -123,7 +123,6 @@ public:
     qint64 estimatedProfilingTime() const;
 
 signals:
-    void countChanged();
     void error(const QString &error);
     void stateChanged();
     void progressChanged();

src/plugins/qmlprofiler/qmlprofilerpainteventsmodelproxy.cpp

@@ -158,8 +158,6 @@ void PaintEventsModelProxy::loadData()
     d->computeNesting();
 
     m_modelManager->modelProxyCountUpdated(m_modelId, 1, 1);
-
-    emit countChanged();
 }
 
 /////////////////// QML interface

src/plugins/qmlprofiler/qmlprofilerstatewidget.cpp

@@ -94,7 +94,6 @@ QmlProfilerStateWidget::QmlProfilerStateWidget(QmlProfilerStateManager *stateMan
     // profiler state
     d->m_modelManager = modelManager;
     connect(d->m_modelManager,SIGNAL(stateChanged()), this, SLOT(dataStateChanged()));
-    connect(d->m_modelManager,SIGNAL(countChanged()), this, SLOT(dataStateChanged()));
     connect(d->m_modelManager,SIGNAL(progressChanged()), this, SLOT(dataStateChanged()));
     connect(this, SIGNAL(newTimeEstimation(qint64)), d->m_modelManager, SLOT(newTimeEstimation(qint64)));
     d->m_profilerState = stateManager;

src/plugins/qmlprofiler/qmlprofilertimelinemodelproxy.cpp

@@ -194,8 +194,6 @@ void BasicTimelineModel::loadData()
     d->computeRowStarts();
 
     m_modelManager->modelProxyCountUpdated(m_modelId, 1, 1);
-
-    emit countChanged();
 }
 
 void BasicTimelineModel::BasicTimelineModelPrivate::computeNestingContracted()

src/plugins/qmlprofiler/timelinemodelaggregator.cpp

@@ -66,7 +66,6 @@ void TimelineModelAggregator::setModelManager(QmlProfilerModelManager *modelMana
 {
     d->modelManager = modelManager;
     connect(modelManager,SIGNAL(stateChanged()),this,SLOT(dataChanged()));
-    connect(modelManager,SIGNAL(countChanged()),this,SIGNAL(countChanged()));
     connect(modelManager,SIGNAL(dataAvailable()),this,SIGNAL(dataAvailable()));
 
     // external models pushed on top
@@ -90,7 +89,6 @@ void TimelineModelAggregator::setModelManager(QmlProfilerModelManager *modelMana
 void TimelineModelAggregator::addModel(AbstractTimelineModel *m)
 {
     d->modelList << m;
-    connect(m,SIGNAL(countChanged()),this,SIGNAL(countChanged()));
     connect(m,SIGNAL(emptyChanged()),this,SIGNAL(emptyChanged()));
     connect(m,SIGNAL(expandedChanged()),this,SIGNAL(expandedChanged()));
     connect(m,SIGNAL(stateChanged()),this,SIGNAL(stateChanged()));

src/plugins/qmlprofiler/timelinemodelaggregator.h

@@ -102,7 +102,6 @@ public:
     Q_INVOKABLE int correctedCategoryIndexForModel(int modelIndex, int absoluteCategoryIndex) const;
 
 signals:
-    void countChanged();
     void dataAvailable();
     void stateChanged();
     void emptyChanged();