Add temporalFrameDurationChanged signal, and make view more aware of …

…changes This commit adds a new signal to the QgsTemporalNavigationObject, which is emitted when the frameDuration (of current QgsTemporalNavigationObject) is change. It also fixes the issue that changing the frame in the Temporal Navigation-WIDGET was not reflected in the widget itself.
qgis · Oct 22, 2020 · a59de06 · a59de06
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commit a59de06
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diff --git a/python/core/auto_generated/qgstemporalnavigationobject.sip.in b/python/core/auto_generated/qgstemporalnavigationobject.sip.in
@@ -208,6 +208,12 @@ Emitted whenever the navigation ``mode`` changes.
 Emitted whenever the temporalExtent ``extent`` changes.
 %End
 
+    void temporalFrameDurationChanged( const QgsInterval &interval );
+%Docstring
+Emitted whenever the frameDuration ``interval`` of the controller changes.
+%End
+
+
   public slots:
 
     void play();

diff --git a/src/core/qgstemporalnavigationobject.cpp b/src/core/qgstemporalnavigationobject.cpp
@@ -178,8 +178,16 @@ long long QgsTemporalNavigationObject::currentFrameNumber() const
 
 void QgsTemporalNavigationObject::setFrameDuration( QgsInterval frameDuration )
 {
+  if ( mFrameDuration == frameDuration )
+  {
+    return;
+  }
   mFrameDuration = frameDuration;
+  emit temporalFrameDurationChanged( mFrameDuration );
   setCurrentFrameNumber( 0 );
+  // forcing an update of our views
+  QgsDateTimeRange range = dateTimeRangeForFrameNumber( mCurrentFrameNumber );
+  emit updateTemporalRange( range );
 }
 
 QgsInterval QgsTemporalNavigationObject::frameDuration() const

diff --git a/src/core/qgstemporalnavigationobject.h b/src/core/qgstemporalnavigationobject.h
@@ -222,6 +222,12 @@ class CORE_EXPORT QgsTemporalNavigationObject : public QgsTemporalController, pu
      */
     void temporalExtentsChanged( const QgsDateTimeRange &extent );
 
+    /**
+     * Emitted whenever the frameDuration \a interval of the controller changes.
+     */
+    void temporalFrameDurationChanged( const QgsInterval &interval );
+
+
   public slots:
 
     /**

diff --git a/src/gui/qgstemporalcontrollerwidget.cpp b/src/gui/qgstemporalcontrollerwidget.cpp
@@ -53,6 +53,7 @@ QgsTemporalControllerWidget::QgsTemporalControllerWidget( QWidget *parent )
   setWidgetStateFromNavigationMode( mNavigationObject->navigationMode() );
   connect( mNavigationObject, &QgsTemporalNavigationObject::navigationModeChanged, this, &QgsTemporalControllerWidget::setWidgetStateFromNavigationMode );
   connect( mNavigationObject, &QgsTemporalNavigationObject::temporalExtentsChanged, this, &QgsTemporalControllerWidget::setDates );
+  connect( mNavigationObject, &QgsTemporalNavigationObject::temporalFrameDurationChanged, this, &QgsTemporalControllerWidget::setTimeStep );
   connect( mNavigationOff, &QPushButton::clicked, this, &QgsTemporalControllerWidget::mNavigationOff_clicked );
   connect( mNavigationFixedRange, &QPushButton::clicked, this, &QgsTemporalControllerWidget::mNavigationFixedRange_clicked );
   connect( mNavigationAnimated, &QPushButton::clicked, this, &QgsTemporalControllerWidget::mNavigationAnimated_clicked );