[composer] Fix table background extending beyond table rows (fix #11272).

It was necessary to add a new 'table background' color option to prevent
regressions when loading old compositions, since users may desire
the old behaviour where the entire frame is filled.

python/core/composer/qgscomposertablev2.sip

@@ -238,6 +238,20 @@ class QgsComposerTableV2: QgsComposerMultiFrame
      */
     QColor gridColor() const;
     
+    /**Sets color used for background of table.
+     * @param color table background color
+     * @see backgroundColor
+     * @see setGridColor
+     */
+    void setBackgroundColor( const QColor& color );
+
+    /**Returns the color used for the background of the table.
+     * @returns table background color
+     * @see setBackgroundColor
+     * @see gridColor
+     */
+    QColor backgroundColor() const;
+
     /**Returns a pointer to the list of QgsComposerTableColumns shown in the table
      * @returns pointer to list of columns in table
      * @see setColumns

src/app/composer/qgscomposerattributetablewidget.cpp

@@ -70,6 +70,12 @@ QgsComposerAttributeTableWidget::QgsComposerAttributeTableWidget( QgsComposerAtt
   mGridColorButton->setColorDialogTitle( tr( "Select grid color" ) );
   mGridColorButton->setAllowAlpha( true );
   mGridColorButton->setContext( "composer" );
+  mGridColorButton->setDefaultColor( Qt::black );
+  mBackgroundColorButton->setColorDialogTitle( tr( "Select background color" ) );
+  mBackgroundColorButton->setAllowAlpha( true );
+  mBackgroundColorButton->setContext( "composer" );
+  mBackgroundColorButton->setShowNoColor( true );
+  mBackgroundColorButton->setNoColorString( tr( "No background" ) );
 
   updateGuiElements();
   on_mComposerMapComboBox_activated( mComposerMapComboBox->currentIndex() );
@@ -428,6 +434,25 @@ void QgsComposerAttributeTableWidget::on_mShowGridGroupCheckBox_toggled( bool st
   }
 }
 
+void QgsComposerAttributeTableWidget::on_mBackgroundColorButton_colorChanged( const QColor& newColor )
+{
+  if ( !mComposerTable )
+  {
+    return;
+  }
+
+  QgsComposition* composition = mComposerTable->composition();
+  if ( composition )
+  {
+    composition->beginMultiFrameCommand( mComposerTable, tr( "Table background color" ) );
+  }
+  mComposerTable->setBackgroundColor( newColor );
+  mComposerTable->update();
+  if ( composition )
+  {
+    composition->endMultiFrameCommand();
+  }
+}
 
 void QgsComposerAttributeTableWidget::updateGuiElements()
 {
@@ -479,6 +504,7 @@ void QgsComposerAttributeTableWidget::updateGuiElements()
   {
     mShowGridGroupCheckBox->setChecked( false );
   }
+  mBackgroundColorButton->setColor( mComposerTable->backgroundColor() );
 
   mHeaderFontColorButton->setColor( mComposerTable->headerFontColor() );
   mContentFontColorButton->setColor( mComposerTable->contentFontColor() );
@@ -602,6 +628,7 @@ void QgsComposerAttributeTableWidget::blockAllSignals( bool b )
   mMarginSpinBox->blockSignals( b );
   mGridColorButton->blockSignals( b );
   mGridStrokeWidthSpinBox->blockSignals( b );
+  mBackgroundColorButton->blockSignals( b );
   mShowGridGroupCheckBox->blockSignals( b );
   mShowOnlyVisibleFeaturesCheckBox->blockSignals( b );
   mUniqueOnlyCheckBox->blockSignals( b );

src/app/composer/qgscomposerattributetablewidget.h

@@ -54,6 +54,7 @@ class QgsComposerAttributeTableWidget: public QgsComposerItemBaseWidget, private
     void on_mMarginSpinBox_valueChanged( double d );
     void on_mGridStrokeWidthSpinBox_valueChanged( double d );
     void on_mGridColorButton_colorChanged( const QColor& newColor );
+    void on_mBackgroundColorButton_colorChanged( const QColor &newColor );
     void on_mHeaderFontPushButton_clicked();
     void on_mHeaderFontColorButton_colorChanged( const QColor& newColor );
     void on_mContentFontPushButton_clicked();
@@ -86,6 +87,7 @@ class QgsComposerAttributeTableWidget: public QgsComposerItemBaseWidget, private
     void atlasToggled();
 
     void updateRelationsCombo();
+
 };
 
 #endif // QGSCOMPOSERATTRIBUTETABLEWIDGET_H

src/core/composer/qgscomposertablev2.cpp

@@ -32,6 +32,7 @@ QgsComposerTableV2::QgsComposerTableV2( QgsComposition *composition, bool create
     , mShowGrid( true )
     , mGridStrokeWidth( 0.5 )
     , mGridColor( Qt::black )
+    , mBackgroundColor( Qt::white )
 {
 
   if ( mComposition )
@@ -75,6 +76,7 @@ bool QgsComposerTableV2::writeXML( QDomElement& elem, QDomDocument & doc, bool i
   elem.setAttribute( "gridStrokeWidth", QString::number( mGridStrokeWidth ) );
   elem.setAttribute( "gridColor", QgsSymbolLayerV2Utils::encodeColor( mGridColor ) );
   elem.setAttribute( "showGrid", mShowGrid );
+  elem.setAttribute( "backgroundColor", QgsSymbolLayerV2Utils::encodeColor( mBackgroundColor ) );
 
   //columns
   QDomElement displayColumnsElem = doc.createElement( "displayColumns" );
@@ -118,6 +120,7 @@ bool QgsComposerTableV2::readXML( const QDomElement &itemElem, const QDomDocumen
   mGridStrokeWidth = itemElem.attribute( "gridStrokeWidth", "0.5" ).toDouble();
   mShowGrid = itemElem.attribute( "showGrid", "1" ).toInt();
   mGridColor = QgsSymbolLayerV2Utils::decodeColor( itemElem.attribute( "gridColor", "0,0,0,255" ) );
+  mBackgroundColor = QgsSymbolLayerV2Utils::decodeColor( itemElem.attribute( "backgroundColor", "255,255,255,0" ) );
 
   //restore column specifications
   qDeleteAll( mColumns );
@@ -252,16 +255,7 @@ void QgsComposerTableV2::render( QPainter *p, const QRectF &renderExtent, const
     refreshAttributes();
   }
 
-  p->save();
+  double gridSize = mShowGrid ? mGridStrokeWidth : 0;
-  //antialiasing on
-  p->setRenderHint( QPainter::Antialiasing, true );
-
-  p->setPen( Qt::SolidLine );
-
-  //now draw the text
-  double currentX = ( mShowGrid ? mGridStrokeWidth : 0 );
-  double currentY;
-
   QList<QgsComposerTableColumn*>::const_iterator columnIt = mColumns.constBegin();
 
   int col = 0;
@@ -275,9 +269,48 @@ void QgsComposerTableV2::render( QPainter *p, const QRectF &renderExtent, const
   //calculate whether drawing table contents is required
   bool drawContents = !( emptyTable && mEmptyTableMode == QgsComposerTableV2::ShowMessage );
 
+  int numberRowsToDraw = rowsToShow.second - rowsToShow.first;
+  if ( mEmptyTableMode == QgsComposerTableV2::DrawEmptyCells )
+  {
+    numberRowsToDraw = rowsVisible( frameIndex );
+  }
+  bool mergeCells = false;
+  if ( emptyTable && mEmptyTableMode == QgsComposerTableV2::ShowMessage )
+  {
+    //draw a merged row for the empty table message
+    numberRowsToDraw++;
+    mergeCells = true;
+  }
+
+  p->save();
+  //antialiasing on
+  p->setRenderHint( QPainter::Antialiasing, true );
+
+  //draw table background
+  if ( mBackgroundColor.alpha() > 0 )
+  {
+    p->save();
+    p->setPen( Qt::NoPen );
+    p->setBrush( QBrush( mBackgroundColor ) );
+    double totalHeight = ( drawHeader || ( numberRowsToDraw > 0 ) ? gridSize : 0 ) +
+                         ( drawHeader ? cellHeaderHeight + gridSize : 0.0 ) +
+                         ( drawContents ? numberRowsToDraw : 1 ) * ( cellBodyHeight + gridSize );
+
+    if ( totalHeight > 0 )
+    {
+      QRectF backgroundRect( 0, 0, mTableSize.width(),  totalHeight );
+      p->drawRect( backgroundRect );
+    }
+    p->restore();
+  }
+
+  //now draw the text
+  double currentX = gridSize;
+  double currentY;
+  p->setPen( Qt::SolidLine );
   for ( ; columnIt != mColumns.constEnd(); ++columnIt )
   {
-    currentY = ( mShowGrid ? mGridStrokeWidth : 0 );
+    currentY = gridSize;
     currentX += mCellMargin;
 
     Qt::TextFlag textFlag = ( Qt::TextFlag )0;
@@ -315,7 +348,7 @@ void QgsComposerTableV2::render( QPainter *p, const QRectF &renderExtent, const
       QgsComposerUtils::drawText( p, cell, ( *columnIt )->heading(), mHeaderFont, mHeaderFontColor, headerAlign, Qt::AlignVCenter, textFlag );
 
       currentY += cellHeaderHeight;
-      currentY += ( mShowGrid ? mGridStrokeWidth : 0 );
+      currentY += gridSize;
     }
 
     if ( drawContents )
@@ -331,32 +364,19 @@ void QgsComposerTableV2::render( QPainter *p, const QRectF &renderExtent, const
         QgsComposerUtils::drawText( p, cell, str, mContentFont, mContentFontColor, ( *columnIt )->hAlignment(), Qt::AlignVCenter, textFlag );
 
         currentY += cellBodyHeight;
-        currentY += ( mShowGrid ? mGridStrokeWidth : 0 );
+        currentY += gridSize;
       }
     }
 
     currentX += mMaxColumnWidthMap[ col ];
     currentX += mCellMargin;
-    currentX += ( mShowGrid ? mGridStrokeWidth : 0 );
+    currentX += gridSize;
     col++;
   }
 
   //and the borders
   if ( mShowGrid )
   {
-    int numberRowsToDraw = rowsToShow.second - rowsToShow.first;
-    if ( mEmptyTableMode == QgsComposerTableV2::DrawEmptyCells )
-    {
-      numberRowsToDraw = rowsVisible( frameIndex );
-    }
-    bool mergeCells = false;
-    if ( emptyTable && mEmptyTableMode == QgsComposerTableV2::ShowMessage )
-    {
-      //draw a merged row for the empty table message
-      numberRowsToDraw++;
-      mergeCells = true;
-    }
-
     QPen gridPen;
     gridPen.setWidthF( mGridStrokeWidth );
     gridPen.setColor( mGridColor );
@@ -369,9 +389,8 @@ void QgsComposerTableV2::render( QPainter *p, const QRectF &renderExtent, const
   //special case - no records and table is set to ShowMessage mode
   if ( emptyTable && mEmptyTableMode == QgsComposerTableV2::ShowMessage )
   {
-    double messageX = ( mShowGrid ? mGridStrokeWidth : 0 ) + mCellMargin;
+    double messageX = gridSize + mCellMargin;
-    double messageY = ( mShowGrid ? mGridStrokeWidth : 0 ) +
+    double messageY = gridSize + ( drawHeader ? cellHeaderHeight + gridSize : 0 );
-                      ( drawHeader ? cellHeaderHeight + ( mShowGrid ? mGridStrokeWidth : 0 ) : 0 );
     cell = QRectF( messageX, messageY, mTableSize.width() - messageX, cellBodyHeight );
     QgsComposerUtils::drawText( p, cell, mEmptyTableMessage, mContentFont, mContentFontColor, Qt::AlignHCenter, Qt::AlignVCenter, ( Qt::TextFlag )0 );
   }
@@ -546,6 +565,19 @@ void QgsComposerTableV2::setGridColor( const QColor &color )
   emit changed();
 }
 
+void QgsComposerTableV2::setBackgroundColor( const QColor &color )
+{
+  if ( color == mBackgroundColor )
+  {
+    return;
+  }
+
+  mBackgroundColor = color;
+  repaint();
+
+  emit changed();
+}
+
 void QgsComposerTableV2::setColumns( QgsComposerTableColumns columns )
 {
   //remove existing columns

src/core/composer/qgscomposertablev2.h

@@ -263,6 +263,20 @@ class CORE_EXPORT QgsComposerTableV2: public QgsComposerMultiFrame
      */
     QColor gridColor() const { return mGridColor; }
 
+    /**Sets color used for background of table.
+     * @param color table background color
+     * @see backgroundColor
+     * @see setGridColor
+     */
+    void setBackgroundColor( const QColor& color );
+
+    /**Returns the color used for the background of the table.
+     * @returns table background color
+     * @see setBackgroundColor
+     * @see gridColor
+     */
+    QColor backgroundColor() const { return mBackgroundColor; }
+
     /**Returns a pointer to the list of QgsComposerTableColumns shown in the table
      * @returns pointer to list of columns in table
      * @see setColumns
@@ -353,6 +367,9 @@ class CORE_EXPORT QgsComposerTableV2: public QgsComposerMultiFrame
     /**Color for grid lines*/
     QColor mGridColor;
 
+    /**Color for table background*/
+    QColor mBackgroundColor;
+
     /**Columns to show in table*/
     QgsComposerTableColumns mColumns;
 

src/ui/qgscomposerattributetablewidgetbase.ui

@@ -17,16 +17,7 @@
    <property name="spacing">
     <number>0</number>
    </property>
-   <property name="leftMargin">
+   <property name="margin">
-    <number>0</number>
-   </property>
-   <property name="topMargin">
-    <number>0</number>
-   </property>
-   <property name="rightMargin">
-    <number>0</number>
-   </property>
-   <property name="bottomMargin">
     <number>0</number>
    </property>
    <item>
@@ -55,8 +46,8 @@
        <rect>
         <x>0</x>
         <y>0</y>
-        <width>391</width>
+        <width>392</width>
-        <height>968</height>
+        <height>1164</height>
        </rect>
       </property>
       <layout class="QVBoxLayout" name="mainLayout">
@@ -312,6 +303,49 @@
           <item row="3" column="1">
            <widget class="QLineEdit" name="mEmptyMessageLineEdit"/>
           </item>
+          <item row="4" column="0">
+           <widget class="QLabel" name="label_10">
+            <property name="text">
+             <string>Background color</string>
+            </property>
+           </widget>
+          </item>
+          <item row="4" column="1">
+           <layout class="QHBoxLayout" name="horizontalLayout_5">
+            <item>
+             <widget class="QgsColorButtonV2" name="mBackgroundColorButton">
+              <property name="minimumSize">
+               <size>
+                <width>120</width>
+                <height>0</height>
+               </size>
+              </property>
+              <property name="maximumSize">
+               <size>
+                <width>120</width>
+                <height>16777215</height>
+               </size>
+              </property>
+              <property name="text">
+               <string/>
+              </property>
+             </widget>
+            </item>
+            <item>
+             <spacer name="horizontalSpacer_4">
+              <property name="orientation">
+               <enum>Qt::Horizontal</enum>
+              </property>
+              <property name="sizeHint" stdset="0">
+               <size>
+                <width>40</width>
+                <height>20</height>
+               </size>
+              </property>
+             </spacer>
+            </item>
+           </layout>
+          </item>
          </layout>
         </widget>
        </item>

tests/src/core/testqgscomposertablev2.cpp

@@ -111,6 +111,7 @@ void TestQgsComposerTableV2::initTestCase()
   mComposerAttributeTable->setMaximumNumberOfFeatures( 10 );
   mComposerAttributeTable->setContentFont( QgsFontUtils::getStandardTestFont() );
   mComposerAttributeTable->setHeaderFont( QgsFontUtils::getStandardTestFont() );
+  mComposerAttributeTable->setBackgroundColor( Qt::yellow );
 
   mReport = "<h1>Composer TableV2 Tests</h1>\n";
 }