[composer] Allow setting the join style for composer item frames

python/core/composer/qgscomposeritem.sip

@@ -237,6 +237,23 @@ class QgsComposerItem : QObject, QGraphicsRectItem
      */
     virtual void setFrameOutlineWidth( double outlineWidth );
 
+    /** Returns the join style used for drawing the item's frame
+     * @returns Join style for outline frame
+     * @note introduced in 2.3
+     * @see hasFrame
+     * @see setFrameJoinStyle
+     */
+    Qt::PenJoinStyle frameJoinStyle() const;
+
+    /** Sets join style used when drawing the item's frame
+     * @param style Join style for outline frame
+     * @returns nothing
+     * @note introduced in 2.3
+     * @see setFrameEnabled
+     * @see frameJoinStyle
+     */
+    void setFrameJoinStyle( Qt::PenJoinStyle style );
+
     /** Returns the estimated amount the item's frame bleeds outside the item's
      *  actual rectangle. For instance, if the item has a 2mm frame outline, then
      *  1mm of this frame is drawn outside the item's rect. In this case the

src/app/composer/qgscomposeritemwidget.cpp

@@ -200,6 +200,19 @@ void QgsComposerItemWidget::on_mOutlineWidthSpinBox_valueChanged( double d )
   mItem->endCommand();
 }
 
+void QgsComposerItemWidget::on_mFrameJoinStyleCombo_currentIndexChanged( int index )
+{
+  Q_UNUSED( index );
+  if ( !mItem )
+  {
+    return;
+  }
+
+  mItem->beginCommand( tr( "Item frame join style" ) );
+  mItem->setFrameJoinStyle( mFrameJoinStyleCombo->penJoinStyle() );
+  mItem->endCommand();
+}
+
 void QgsComposerItemWidget::on_mFrameGroupBox_toggled( bool state )
 {
   if ( !mItem )
@@ -339,6 +352,7 @@ void QgsComposerItemWidget::setValuesForGuiElements()
   mTransparencySlider->blockSignals( true );
   mTransparencySpnBx->blockSignals( true );
   mFrameColorButton->blockSignals( true );
+  mFrameJoinStyleCombo->blockSignals( true );
   mBackgroundColorButton->blockSignals( true );
   mItemRotationSpinBox->blockSignals( true );
 
@@ -349,6 +363,7 @@ void QgsComposerItemWidget::setValuesForGuiElements()
   mFrameColorButton->setColorDialogTitle( tr( "Select frame color" ) );
   mFrameColorButton->setColorDialogOptions( QColorDialog::ShowAlphaChannel );
   mOutlineWidthSpinBox->setValue( mItem->pen().widthF() );
+  mFrameJoinStyleCombo->setPenJoinStyle( mItem->frameJoinStyle() );
   mItemIdLineEdit->setText( mItem->id() );
   mFrameGroupBox->setChecked( mItem->hasFrame() );
   mBackgroundGroupBox->setChecked( mItem->hasBackground() );
@@ -359,6 +374,7 @@ void QgsComposerItemWidget::setValuesForGuiElements()
 
   mBackgroundColorButton->blockSignals( false );
   mFrameColorButton->blockSignals( false );
+  mFrameJoinStyleCombo->blockSignals( false );
   mOutlineWidthSpinBox->blockSignals( false );
   mFrameGroupBox->blockSignals( false );
   mBackgroundGroupBox->blockSignals( false );

src/app/composer/qgscomposeritemwidget.h

@@ -55,6 +55,7 @@ class QgsComposerItemWidget: public QWidget, private Ui::QgsComposerItemWidgetBa
 //    void on_mTransparencySpinBox_valueChanged( int value );
     void on_mOutlineWidthSpinBox_valueChanged( double d );
     void on_mFrameGroupBox_toggled( bool state );
+    void on_mFrameJoinStyleCombo_currentIndexChanged( int index );
     void on_mBackgroundGroupBox_toggled( bool state );
     void on_mItemIdLineEdit_editingFinished();
 

src/core/composer/qgscomposeritem.cpp

@@ -56,6 +56,7 @@ QgsComposerItem::QgsComposerItem( QgsComposition* composition, bool manageZValue
     , mFrame( false )
     , mBackground( true )
     , mBackgroundColor( QColor( 255, 255, 255, 255 ) )
+    , mFrameJoinStyle( Qt::MiterJoin )
     , mItemPositionLocked( false )
     , mLastValidViewScaleFactor( -1 )
     , mItemRotation( 0 )
@@ -79,6 +80,7 @@ QgsComposerItem::QgsComposerItem( qreal x, qreal y, qreal width, qreal height, Q
     , mFrame( false )
     , mBackground( true )
     , mBackgroundColor( QColor( 255, 255, 255, 255 ) )
+    , mFrameJoinStyle( Qt::MiterJoin )
     , mItemPositionLocked( false )
     , mLastValidViewScaleFactor( -1 )
     , mItemRotation( 0 )
@@ -100,7 +102,7 @@ void QgsComposerItem::init( bool manageZValue )
   setBrush( QBrush( QColor( 255, 255, 255, 255 ) ) );
   QPen defaultPen( QColor( 0, 0, 0 ) );
   defaultPen.setWidthF( 0.3 );
-  defaultPen.setJoinStyle( Qt::MiterJoin );
+  defaultPen.setJoinStyle( mFrameJoinStyle );
   setPen( defaultPen );
   //let z-Value be managed by composition
   if ( mComposition && manageZValue )
@@ -175,6 +177,7 @@ bool QgsComposerItem::_writeXML( QDomElement& itemElem, QDomDocument& doc ) cons
   composerItemElem.setAttribute( "positionMode", QString::number(( int ) mLastUsedPositionMode ) );
   composerItemElem.setAttribute( "zValue", QString::number( zValue() ) );
   composerItemElem.setAttribute( "outlineWidth", QString::number( pen().widthF() ) );
+  composerItemElem.setAttribute( "frameJoinStyle", QgsSymbolLayerV2Utils::encodePenJoinStyle( mFrameJoinStyle ) );
   composerItemElem.setAttribute( "itemRotation",  QString::number( mItemRotation ) );
   composerItemElem.setAttribute( "uuid", mUuid );
   composerItemElem.setAttribute( "id", mId );
@@ -315,11 +318,13 @@ bool QgsComposerItem::_readXML( const QDomElement& itemElem, const QDomDocument&
     penGreen = frameColorElem.attribute( "green" ).toDouble( &greenOk );
     penBlue = frameColorElem.attribute( "blue" ).toDouble( &blueOk );
     penAlpha = frameColorElem.attribute( "alpha" ).toDouble( &alphaOk );
+    mFrameJoinStyle = QgsSymbolLayerV2Utils::decodePenJoinStyle( itemElem.attribute( "frameJoinStyle", "miter" ) );
+
     if ( redOk && greenOk && blueOk && alphaOk && widthOk )
     {
       QPen framePen( QColor( penRed, penGreen, penBlue, penAlpha ) );
       framePen.setWidthF( penWidth );
-      framePen.setJoinStyle( Qt::MiterJoin );
+      framePen.setJoinStyle( mFrameJoinStyle );
       setPen( framePen );
     }
   }
@@ -370,6 +375,21 @@ void QgsComposerItem::setFrameOutlineWidth( double outlineWidth )
   emit frameChanged();
 }
 
+void QgsComposerItem::setFrameJoinStyle( Qt::PenJoinStyle style )
+{
+  if ( mFrameJoinStyle == style )
+  {
+    //no change
+    return;
+  }
+  mFrameJoinStyle = style;
+
+  QPen itemPen = pen();
+  itemPen.setJoinStyle( mFrameJoinStyle );
+  setPen( itemPen );
+  emit frameChanged();
+}
+
 double QgsComposerItem::estimatedFrameBleed() const
 {
   if ( !hasFrame() )

src/core/composer/qgscomposeritem.h

@@ -197,6 +197,22 @@ class CORE_EXPORT QgsComposerItem: public QObject, public QGraphicsRectItem
      */
     virtual void setFrameOutlineWidth( double outlineWidth );
 
+    /** Returns the join style used for drawing the item's frame
+     * @returns Join style for outline frame
+     * @note introduced in 2.3
+     * @see hasFrame
+     * @see setFrameJoinStyle
+     */
+    Qt::PenJoinStyle frameJoinStyle() const { return mFrameJoinStyle; }
+    /** Sets join style used when drawing the item's frame
+     * @param style Join style for outline frame
+     * @returns nothing
+     * @note introduced in 2.3
+     * @see setFrameEnabled
+     * @see frameJoinStyle
+     */
+    void setFrameJoinStyle( Qt::PenJoinStyle style );
+
     /** Returns the estimated amount the item's frame bleeds outside the item's
      *  actual rectangle. For instance, if the item has a 2mm frame outline, then
      *  1mm of this frame is drawn outside the item's rect. In this case the
@@ -382,6 +398,8 @@ class CORE_EXPORT QgsComposerItem: public QObject, public QGraphicsRectItem
     bool mBackground;
     /**Background color*/
     QColor mBackgroundColor;
+    /**Frame join style*/
+    Qt::PenJoinStyle mFrameJoinStyle;
 
     /**True if item position  and size cannot be changed with mouse move
     @note: this member was added in version 1.2*/

src/ui/qgscomposeritemwidgetbase.ui

@@ -14,7 +14,16 @@
    <string>Global Options</string>
   </property>
   <layout class="QVBoxLayout" name="verticalLayout_2">
-   <property name="margin">
+   <property name="leftMargin">
+    <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>
@@ -264,12 +273,13 @@
       <bool>true</bool>
      </property>
      <layout class="QFormLayout" name="formLayout_4">
-      <property name="fieldGrowthPolicy">
-       <enum>QFormLayout::AllNonFixedFieldsGrow</enum>
-      </property>
-      <property name="labelAlignment">
-       <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
-      </property>
+      <item row="0" column="0" colspan="2">
+       <widget class="QgsColorButton" name="mFrameColorButton">
+        <property name="text">
+         <string>Color...</string>
+        </property>
+       </widget>
+      </item>
       <item row="1" column="0">
        <widget class="QLabel" name="mOutlineWidthLabel">
         <property name="text">
@@ -286,13 +296,16 @@
       <item row="1" column="1">
        <widget class="QDoubleSpinBox" name="mOutlineWidthSpinBox"/>
       </item>
-      <item row="0" column="0" colspan="2">
-       <widget class="QgsColorButton" name="mFrameColorButton">
+      <item row="2" column="0">
+       <widget class="QLabel" name="label_8">
         <property name="text">
-         <string>Color...</string>
+         <string>Join style</string>
         </property>
        </widget>
       </item>
+      <item row="2" column="1">
+       <widget class="QgsPenJoinStyleComboBox" name="mFrameJoinStyleCombo"/>
+      </item>
      </layout>
     </widget>
    </item>
@@ -449,6 +462,11 @@
    <header location="global">qgscollapsiblegroupbox.h</header>
    <container>1</container>
   </customwidget>
+  <customwidget>
+   <class>QgsPenJoinStyleComboBox</class>
+   <extends>QComboBox</extends>
+   <header>qgspenstylecombobox.h</header>
+  </customwidget>
  </customwidgets>
  <resources/>
  <connections/>