disable Build Pyramids button if no pyramids levels selected. Also reset progressbar state after building pyramids

git-svn-id: http://svn.osgeo.org/qgis/trunk@15745 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: alexbruy

src/app/qgsrasterlayerproperties.cpp

@@ -91,6 +91,8 @@ QgsRasterLayerProperties::QgsRasterLayerProperties( QgsMapLayer* lyr, QgsMapCanv
   connect( leBlueMin, SIGNAL( textEdited( QString ) ), this, SLOT( userDefinedMinMax_textEdited( QString ) ) );
   connect( leBlueMax, SIGNAL( textEdited( QString ) ), this, SLOT( userDefinedMinMax_textEdited( QString ) ) );
   connect( mColormapTreeWidget, SIGNAL( itemDoubleClicked( QTreeWidgetItem*, int ) ), this, SLOT( handleColormapTreeWidgetDoubleClick( QTreeWidgetItem*, int ) ) );
+  // enable or disable Build Pyramids button depending on selection in pyramid list
+  connect( lbxPyramidResolutions, SIGNAL( itemSelectionChanged() ), this, SLOT( toggleBuildPyramidsButton() ) );
 
   connect( mRasterLayer, SIGNAL( dataChanged( int ) ), this, SLOT( dataChanged( int ) ) );
 
@@ -1544,6 +1546,8 @@ void QgsRasterLayerProperties::on_buttonBuildPyramids_clicked()
                   cboResamplingMethod->currentText(),
                   myBuildInternalFlag );
   QApplication::restoreOverrideCursor();
+  mPyramidProgress->setValue( 0 );
+  buttonBuildPyramids->setEnabled( false );
   disconnect( mRasterLayer, SIGNAL( progressUpdate( int ) ), mPyramidProgress, SLOT( setValue( int ) ) );
   if ( !res.isNull() )
   {
@@ -3039,4 +3043,17 @@ void QgsRasterLayerProperties::on_btnResetNull_clicked( )
 void QgsRasterLayerProperties::dataChanged( int change )
 {
   QgsDebugMsg( "entered." );
-}
+}
+
+void QgsRasterLayerProperties::toggleBuildPyramidsButton()
+{
+  if ( lbxPyramidResolutions->selectedItems().empty() )
+  {
+    buttonBuildPyramids->setEnabled( false );
+  }
+  else
+  {
+    buttonBuildPyramids->setEnabled( true );
+  }
+}
+

src/app/qgsrasterlayerproperties.h

@@ -149,6 +149,8 @@ class QgsRasterLayerProperties : public QDialog, private Ui::QgsRasterLayerPrope
     void on_buttonBox_helpRequested() { QgsContextHelp::run( metaObject()->className() ); }
     /** This slot lets you save the histogram as an image to disk */
     void on_mSaveAsImageButton_clicked();
+    /**Enable or disable Build pyramids button depending on selection in pyramids list*/
+    void toggleBuildPyramidsButton();
 
   signals:
 

src/ui/qgsrasterlayerpropertiesbase.ui

@@ -1846,6 +1846,9 @@ p, li { white-space: pre-wrap; }
        </item>
        <item row="3" column="4">
         <widget class="QPushButton" name="buttonBuildPyramids">
+         <property name="enabled">
+          <bool>false</bool>
+         </property>
          <property name="text">
           <string>Build pyramids</string>
          </property>