chart2: layout buttons in charts when data is present

This commit layouts the buttons in the chart when there is data
present. Currently this never shows them as other infrastructure
needs to be present to get the PT data.

Change-Id: If33c726eb057b2b938ccb3c00f0d5b671416f355
Reviewed-on: https://gerrit.libreoffice.org/34004
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
Tested-by: Tomaž Vajngerl <quikee@gmail.com>

2 files changed, 148 insertions, 14 deletions

diff --git a/chart2/source/view/main/ChartView.cxx b/chart2/source/view/main/ChartView.cxx
index 7e08061b75e0..f509436e2092 100644
--- a/chart2/source/view/main/ChartView.cxx
+++ b/chart2/source/view/main/ChartView.cxx
@@ -25,6 +25,7 @@
 #include "ViewDefines.hxx"
 #include "VDiagram.hxx"
 #include "VTitle.hxx"
+#include "VButton.hxx"
 #include "AbstractShapeFactory.hxx"
 #include "VCoordinateSystem.hxx"
 #include "VSeriesPlotter.hxx"
@@ -2483,6 +2484,88 @@ bool lcl_createLegend( const uno::Reference< XLegend > & xLegend
     return true;
 }
 
+void lcl_createButtons(const uno::Reference< drawing::XShapes>& xPageShapes,
+                       const uno::Reference< lang::XMultiServiceFactory>& xShapeFactory,
+                       ChartModel& rModel,
+                       awt::Rectangle& rRemainingSpace)
+{
+    uno::Reference<beans::XPropertySet> xModelPage(rModel.getPageBackground());
+
+// TODO: Get this from the PivotTable
+    std::vector<OUString> aPageFields {
+//        "Subdivision", "Subdivision2"
+    };
+    std::vector<OUString> aDataFields {
+//        "Sum - Revenue", "Sum - Expenses"
+    };
+    std::vector<OUString> aColumnFields {
+//        "Group Segment", "Group Segment 2"
+    };
+
+    awt::Size aSize(3000, 700); // size of the button
+
+    long x = 0;
+    int nCIDIndex = 0;
+
+    if (!aPageFields.empty())
+    {
+        x = 0;
+        nCIDIndex = 0;
+
+        for (OUString const & aPageField : aPageFields)
+        {
+            std::unique_ptr<VButton> pButton(new VButton);
+            pButton->init(xPageShapes, xShapeFactory);
+            awt::Point aNewPosition = awt::Point(rRemainingSpace.X + x + 100, rRemainingSpace.Y + 100);
+            pButton->setLabel(aPageField);
+            pButton->setCID("PageFieldButton." + OUString::number(nCIDIndex));
+            pButton->createShapes(aNewPosition, aSize, xModelPage);
+            x += aSize.Width + 100;
+            nCIDIndex += 1;
+        }
+        rRemainingSpace.Y += (aSize.Height + 100 + 100);
+        rRemainingSpace.Height -= (aSize.Height + 100 + 100);
+    }
+
+    if (!aDataFields.empty())
+    {
+        x = 200;
+        nCIDIndex = 0;
+        for (OUString const & aDataField : aDataFields)
+        {
+            std::unique_ptr<VButton> pButton(new VButton);
+            pButton->init(xPageShapes, xShapeFactory);
+            awt::Point aNewPosition = awt::Point(rRemainingSpace.X + x + 100, rRemainingSpace.Y + 100);
+            pButton->setLabel(aDataField);
+            pButton->setCID("DataFieldButton." + OUString::number(nCIDIndex));
+            pButton->createShapes(aNewPosition, aSize, xModelPage);
+            x += aSize.Width + 100;
+            nCIDIndex += 1;
+        }
+        rRemainingSpace.Y += (aSize.Height + 100 + 100);
+        rRemainingSpace.Height -= (aSize.Height + 100 + 100);
+    }
+
+    if (!aColumnFields.empty())
+    {
+        x = 200;
+        nCIDIndex = 0;
+        for (OUString const & aColumnField : aColumnFields)
+        {
+            std::unique_ptr<VButton> pButton(new VButton);
+            pButton->init(xPageShapes, xShapeFactory);
+            awt::Point aNewPosition = awt::Point(rRemainingSpace.X + x + 100,
+                                                 rRemainingSpace.Y + rRemainingSpace.Height - aSize.Height - 100);
+            pButton->setLabel(aColumnField);
+            pButton->setCID("ColumnFieldButton." + OUString::number(nCIDIndex));
+            pButton->createShapes(aNewPosition, aSize, xModelPage);
+            x += aSize.Width + 100;
+            nCIDIndex += 1;
+        }
+        rRemainingSpace.Height -= (aSize.Height + 100 + 100);
+    }
+}
+
 void formatPage(
       ChartModel& rChartModel
     , const awt::Size& rPageSize
@@ -3163,6 +3246,9 @@ void ChartView::createShapes2D( const awt::Size& rPageSize )
 
     bool bAutoPositionDummy = true;
 
+    // create buttons
+    lcl_createButtons(mxRootShape, m_xShapeFactory, mrChartModel, aParam.maRemainingSpace);
+
     lcl_createTitle(
         TitleHelper::MAIN_TITLE, mxRootShape, m_xShapeFactory, mrChartModel,
         aParam.maRemainingSpace, rPageSize, ALIGN_TOP, bAutoPositionDummy);
diff --git a/chart2/source/view/main/VLegend.cxx b/chart2/source/view/main/VLegend.cxx
index 8007f2931efb..9506b250bda2 100644
--- a/chart2/source/view/main/VLegend.cxx
+++ b/chart2/source/view/main/VLegend.cxx
@@ -18,6 +18,7 @@
  */
 
 #include "VLegend.hxx"
+#include "VButton.hxx"
 #include "macros.hxx"
 #include "PropertyMapper.hxx"
 #include "CommonConverters.hxx"
@@ -263,12 +264,12 @@ awt::Size lcl_placeLegendEntries(
     tPropertyValues & rTextProperties,
     const Reference< drawing::XShapes > & xTarget,
     const Reference< lang::XMultiServiceFactory > & xShapeFactory,
-    const awt::Size & rAvailableSpace )
+    const awt::Rectangle& rRemainingSpace)
 {
     bool bIsCustomSize = (eExpansion == css::chart::ChartLegendExpansion_CUSTOM);
     awt::Size aResultingLegendSize(0,0);
     if( bIsCustomSize )
-        aResultingLegendSize = rAvailableSpace;
+        aResultingLegendSize = awt::Size(rRemainingSpace.Width, rRemainingSpace.Height);
 
     // #i109336# Improve auto positioning in chart
     sal_Int32 nXPadding = static_cast< sal_Int32 >( std::max( 100.0, fViewFontSize * 0.33 ) );
@@ -278,7 +279,7 @@ awt::Size lcl_placeLegendEntries(
 
     const sal_Int32 nSymbolToTextDistance = static_cast< sal_Int32 >( std::max( 100.0, fViewFontSize * 0.22 ) );//minimum 1mm
     const sal_Int32 nSymbolPlusDistanceWidth = rMaxSymbolExtent.Width + nSymbolToTextDistance;
-    sal_Int32 nMaxTextWidth = rAvailableSpace.Width - (2 * nXPadding) - nSymbolPlusDistanceWidth;
+    sal_Int32 nMaxTextWidth = rRemainingSpace.Width - (2 * nXPadding) - nSymbolPlusDistanceWidth;
     uno::Any* pFrameWidthAny = PropertyMapper::getValuePointer( rTextProperties.second, rTextProperties.first, "TextMaximumFrameWidth");
     if(pFrameWidthAny)
     {
@@ -286,7 +287,7 @@ awt::Size lcl_placeLegendEntries(
         {
             // limit the width of texts to 30% of the total available width
             // #i109336# Improve auto positioning in chart
-            nMaxTextWidth = rAvailableSpace.Width * 3 / 10;
+            nMaxTextWidth = rRemainingSpace.Width * 3 / 10;
         }
         *pFrameWidthAny <<= nMaxTextWidth;
     }
@@ -345,7 +346,7 @@ awt::Size lcl_placeLegendEntries(
                 for (sal_Int32 nColumn = 0; nColumn < nCurrentColumnCount; nColumn++)
                     nSumWidth += aColumnWidths[nColumn];
 
-                if( nSumWidth <= rAvailableSpace.Width || nCurrentColumnCount==1 )
+                if( nSumWidth <= rRemainingSpace.Width || nCurrentColumnCount==1 )
                 {
                     //all good proceed with next entry
                     continue;
@@ -378,7 +379,7 @@ awt::Size lcl_placeLegendEntries(
         sal_Int32 nSumHeight = 0;
         for (sal_Int32 nRow=0; nRow < nNumberOfRows; nRow++)
             nSumHeight += aRowHeights[nRow];
-        sal_Int32 nRemainingSpace = rAvailableSpace.Height - nSumHeight;
+        sal_Int32 nRemainingSpace = rRemainingSpace.Height - nSumHeight;
 
         if( nRemainingSpace < -100 ) // 1mm tolerance for OOXML interop tdf#90404
         {
@@ -402,7 +403,7 @@ awt::Size lcl_placeLegendEntries(
                 }
                 nSumHeight -= aRowHeights[nRow];
                 aRowHeights.pop_back();
-                nRemainingSpace = rAvailableSpace.Height - nSumHeight;
+                nRemainingSpace = rRemainingSpace.Height - nSumHeight;
                 if( nRemainingSpace>=0 )
                     break;
             }
@@ -429,7 +430,7 @@ awt::Size lcl_placeLegendEntries(
         sal_Int32 nSumWidth = 0;
         for (sal_Int32 nColumn = 0; nColumn < nNumberOfColumns; nColumn++)
             nSumWidth += aColumnWidths[nColumn];
-        nRemainingSpace = rAvailableSpace.Width - nSumWidth;
+        nRemainingSpace = rRemainingSpace.Width - nSumWidth;
         if( nRemainingSpace>=0 )
         {
             sal_Int32 nNormalSpacingWidth = 2*nXPadding+(nNumberOfColumns-1)*nXOffset;
@@ -450,7 +451,7 @@ awt::Size lcl_placeLegendEntries(
     else if( eExpansion == css::chart::ChartLegendExpansion_HIGH )
     {
         sal_Int32 nMaxNumberOfRows = nMaxEntryHeight
-            ? (rAvailableSpace.Height - 2*nYPadding ) / nMaxEntryHeight
+            ? (rRemainingSpace.Height - 2*nYPadding ) / nMaxEntryHeight
             : 0;
 
         nNumberOfColumns = nMaxNumberOfRows
@@ -467,7 +468,7 @@ awt::Size lcl_placeLegendEntries(
     else if( eExpansion == css::chart::ChartLegendExpansion_WIDE )
     {
         sal_Int32 nMaxNumberOfColumns = nMaxEntryWidth
-            ? (rAvailableSpace.Width - 2*nXPadding ) / nMaxEntryWidth
+            ? (rRemainingSpace.Width - 2*nXPadding ) / nMaxEntryWidth
             : 0;
 
         nNumberOfRows = nMaxNumberOfColumns
@@ -513,7 +514,7 @@ awt::Size lcl_placeLegendEntries(
 
     for (sal_Int32 nColumn = 0; nColumn < nNumberOfColumns; ++nColumn)
     {
-        sal_Int32 nCurrentYPos = nYPadding;
+        sal_Int32 nCurrentYPos = nYPadding + rRemainingSpace.Y;
         for (sal_Int32 nRow = 0; nRow < nNumberOfRows; ++nRow)
         {
             sal_Int32 nEntry = (nColumn + nRow * nNumberOfColumns);
@@ -760,6 +761,42 @@ bool lcl_shouldSymbolsBePlacedOnTheLeftSide( const Reference< beans::XPropertySe
     return bSymbolsLeftSide;
 }
 
+std::vector<std::shared_ptr<VButton>> lcl_createButtons(
+                       const uno::Reference< drawing::XShapes>& xLegendContainer,
+                       const uno::Reference< lang::XMultiServiceFactory>& xShapeFactory,
+                       ChartModel& rModel, long& nUsedHeight)
+{
+// TODO: get this info from the Pivot Table
+    std::vector<OUString> aRowFields {
+//        "Service Months"
+    };
+
+    std::vector<std::shared_ptr<VButton>> aButtons;
+
+    if (aRowFields.empty())
+        return aButtons;
+
+    uno::Reference<beans::XPropertySet> xModelPage(rModel.getPageBackground());
+
+    int nCIDIndex = 0;
+    awt::Size aSize(2000, 700);
+
+    for (OUString const & sRowField : aRowFields)
+    {
+        std::shared_ptr<VButton> pButton(new VButton);
+        aButtons.push_back(pButton);
+        pButton->init(xLegendContainer, xShapeFactory);
+        awt::Point aNewPosition = awt::Point(100, 100);
+        pButton->setLabel(sRowField);
+        pButton->setCID("RowFieldButton." + OUString::number(nCIDIndex));
+        pButton->createShapes(aNewPosition, aSize, xModelPage);
+        nCIDIndex += 1;
+    }
+    nUsedHeight += aSize.Height + 100;
+
+    return aButtons;
+}
+
 } // anonymous namespace
 
 VLegend::VLegend(
@@ -825,6 +862,10 @@ void VLegend::createShapes(
         Reference< drawing::XShapes > xLegendContainer( m_xShape, uno::UNO_QUERY );
         if( xLegendContainer.is())
         {
+            long nUsedHeight = 0;
+            std::vector<std::shared_ptr<VButton>> aButtons;
+            aButtons = lcl_createButtons(xLegendContainer, m_xShapeFactory, mrModel, nUsedHeight);
+
             // for quickly setting properties
             tPropertyValues aLineFillProperties;
             tPropertyValues aTextProperties;
@@ -886,11 +927,18 @@ void VLegend::createShapes(
 
             bool bSymbolsLeftSide = lcl_shouldSymbolsBePlacedOnTheLeftSide( xLegendProp, m_nDefaultWritingMode );
 
-            if( !aViewEntries.empty() ) {
+            if (!aViewEntries.empty())
+            {
+                awt::Rectangle aRectangle(0, nUsedHeight, aLegendSize.Width, aLegendSize.Height - nUsedHeight);
+
                 // place entries
-                aLegendSize = lcl_placeLegendEntries( aViewEntries, eExpansion, bSymbolsLeftSide, fViewFontSize, aMaxSymbolExtent,
-                                                      aTextProperties, xLegendContainer, m_xShapeFactory, aLegendSize );
+                aLegendSize = lcl_placeLegendEntries(aViewEntries, eExpansion, bSymbolsLeftSide, fViewFontSize, aMaxSymbolExtent,
+                                                     aTextProperties, xLegendContainer, m_xShapeFactory, aRectangle);
 
+                for (std::shared_ptr<VButton> const & pButton : aButtons)
+                {
+                    pButton->setWidth(aLegendSize.Width - 200);
+                }
             }
 
             Reference< drawing::XShape > xBorder =