chart2: extract AxisUsage from ChartView into AxisUsage.hxx

Change-Id: I680196af9c349c37312f177ab84051f0b68deae2
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/133120
Tested-by: Tomaž Vajngerl <quikee@gmail.com>
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

2 files changed, 144 insertions, 117 deletions

diff --git a/chart2/source/view/main/AxisUsage.hxx b/chart2/source/view/main/AxisUsage.hxx
new file mode 100644
index 000000000000..83451870755f
--- /dev/null
+++ b/chart2/source/view/main/AxisUsage.hxx
@@ -0,0 +1,143 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <sal/types.h>
+#include <memory>
+#include <map>
+
+#include <VCoordinateSystem.hxx>
+#include <AxisHelper.hxx>
+#include <ScaleAutomatism.hxx>
+
+namespace chart
+{
+//first index is the dimension, second index is the axis index that indicates whether this is a main or secondary axis
+typedef std::pair<sal_Int32, sal_Int32> tFullAxisIndex;
+typedef std::map<VCoordinateSystem*, tFullAxisIndex> tCoordinateSystemMap;
+
+/** This class handles a collection of coordinate systems and is used for
+ *  executing some action on all coordinate systems such as
+ *  "prepareAutomaticAxisScaling" and "setExplicitScaleAndIncrement".
+ *  Moreover it contains the "aAutoScaling" object that is an instance of
+ *  the "ScaleAutomatism" class. The initialization of "aAutoScaling" is
+ *  performed in the "SeriesPlotterContainer::initAxisUsageList" method and is
+ *  used in the "SeriesPlotterContainer::doAutoScaling" for calculating explicit
+ *  scale and increment objects (see "SeriesPlotterContainer::doAutoScaling").
+ */
+class AxisUsage
+{
+public:
+    AxisUsage()
+        : aAutoScaling(AxisHelper::createDefaultScale(), Date(Date::SYSTEM))
+    {
+    }
+
+    void addCoordinateSystem(VCoordinateSystem* pCooSys, sal_Int32 nDimensionIndex,
+                             sal_Int32 nAxisIndex)
+    {
+        if (!pCooSys)
+            return;
+
+        tFullAxisIndex aFullAxisIndex(nDimensionIndex, nAxisIndex);
+        tCoordinateSystemMap::const_iterator aFound(aCoordinateSystems.find(pCooSys));
+
+        //use one scale only once for each coordinate system
+        //main axis are preferred over secondary axis
+        //value scales are preferred
+        if (aFound != aCoordinateSystems.end())
+        {
+            sal_Int32 nFoundAxisIndex = aFound->second.second;
+            if (nFoundAxisIndex < nAxisIndex)
+                return;
+            sal_Int32 nFoundDimension = aFound->second.first;
+            if (nFoundDimension == 1)
+                return;
+            if (nFoundDimension < nDimensionIndex)
+                return;
+        }
+        aCoordinateSystems[pCooSys] = aFullAxisIndex;
+
+        //set maximum scale index
+        auto aIter = aMaxIndexPerDimension.find(nDimensionIndex);
+        if (aIter != aMaxIndexPerDimension.end())
+        {
+            sal_Int32 nCurrentMaxIndex = aIter->second;
+            if (nCurrentMaxIndex < nAxisIndex)
+                aMaxIndexPerDimension[nDimensionIndex] = nAxisIndex;
+        }
+        else
+            aMaxIndexPerDimension[nDimensionIndex] = nAxisIndex;
+    }
+
+    std::vector<VCoordinateSystem*> getCoordinateSystems(sal_Int32 nDimensionIndex,
+                                                         sal_Int32 nAxisIndex)
+    {
+        std::vector<VCoordinateSystem*> aRet;
+
+        for (auto const& coordinateSystem : aCoordinateSystems)
+        {
+            if (coordinateSystem.second.first != nDimensionIndex)
+                continue;
+            if (coordinateSystem.second.second != nAxisIndex)
+                continue;
+            aRet.push_back(coordinateSystem.first);
+        }
+
+        return aRet;
+    }
+
+    sal_Int32 getMaxAxisIndexForDimension(sal_Int32 nDimensionIndex)
+    {
+        sal_Int32 nRet = -1;
+        auto aIter = aMaxIndexPerDimension.find(nDimensionIndex);
+        if (aIter != aMaxIndexPerDimension.end())
+            nRet = aIter->second;
+        return nRet;
+    }
+
+    void prepareAutomaticAxisScaling(ScaleAutomatism& rScaleAutomatism, sal_Int32 nDimIndex,
+                                     sal_Int32 nAxisIndex)
+    {
+        std::vector<VCoordinateSystem*> aVCooSysList = getCoordinateSystems(nDimIndex, nAxisIndex);
+        for (VCoordinateSystem* pVCoordinateSystem : aVCooSysList)
+            pVCoordinateSystem->prepareAutomaticAxisScaling(rScaleAutomatism, nDimIndex,
+                                                            nAxisIndex);
+    }
+
+    void setExplicitScaleAndIncrement(sal_Int32 nDimIndex, sal_Int32 nAxisIndex,
+                                      const ExplicitScaleData& rScale,
+                                      const ExplicitIncrementData& rInc)
+    {
+        std::vector<VCoordinateSystem*> aVCooSysList = getCoordinateSystems(nDimIndex, nAxisIndex);
+        for (VCoordinateSystem* pVCoordinateSystem : aVCooSysList)
+            pVCoordinateSystem->setExplicitScaleAndIncrement(nDimIndex, nAxisIndex, rScale, rInc);
+    }
+
+    ScaleAutomatism aAutoScaling;
+
+private:
+    tCoordinateSystemMap aCoordinateSystems;
+    std::map<sal_Int32, sal_Int32> aMaxIndexPerDimension;
+};
+
+} //end chart2 namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/chart2/source/view/main/ChartView.cxx b/chart2/source/view/main/ChartView.cxx
index f9cfdca743c4..0a93015ad19e 100644
--- a/chart2/source/view/main/ChartView.cxx
+++ b/chart2/source/view/main/ChartView.cxx
@@ -47,6 +47,7 @@
 #include <servicenames.hxx>
 #include <Axis.hxx>
 #include <AxisHelper.hxx>
+#include "AxisUsage.hxx"
 #include <AxisIndexDefines.hxx>
 #include <BaseGFXHelper.hxx>
 #include <DataSeriesHelper.hxx>
@@ -122,123 +123,6 @@ using ::com::sun::star::uno::Any;
 
 namespace {
 
-typedef std::pair< sal_Int32, sal_Int32 > tFullAxisIndex; //first index is the dimension, second index is the axis index that indicates whether this is a main or secondary axis
-typedef std::map< VCoordinateSystem*, tFullAxisIndex > tCoordinateSystemMap;
-
-/** This class handles a collection of coordinate systems and is used for
- *  executing some action on all coordinate systems such as
- *  `prepareAutomaticAxisScaling` and `setExplicitScaleAndIncrement`.
- *  Moreover it contains the `aAutoScaling` object that is an instance of
- *  the `ScaleAutomatism` class. The initialization of `aAutoScaling` is
- *  performed in the `SeriesPlotterContainer::initAxisUsageList` method and is
- *  used in the `SeriesPlotterContainer::doAutoScaling` for calculating explicit
- *  scale and increment objects (see `SeriesPlotterContainer::doAutoScaling`).
- */
-struct AxisUsage
-{
-    AxisUsage();
-    ~AxisUsage();
-
-    void addCoordinateSystem( VCoordinateSystem* pCooSys, sal_Int32 nDimensionIndex, sal_Int32 nAxisIndex );
-    std::vector< VCoordinateSystem* > getCoordinateSystems( sal_Int32 nDimensionIndex, sal_Int32 nAxisIndex );
-    sal_Int32 getMaxAxisIndexForDimension( sal_Int32 nDimensionIndex );
-
-    void prepareAutomaticAxisScaling( ScaleAutomatism& rScaleAutomatism, sal_Int32 nDimIndex, sal_Int32 nAxisIndex );
-    void setExplicitScaleAndIncrement( sal_Int32 nDimIndex, sal_Int32 nAxisIndex, const ExplicitScaleData& rScale, const ExplicitIncrementData& rInc );
-
-    ScaleAutomatism aAutoScaling;
-
-private:
-    tCoordinateSystemMap    aCoordinateSystems;
-    std::map< sal_Int32, sal_Int32 > aMaxIndexPerDimension;
-};
-
-AxisUsage::AxisUsage()
-    : aAutoScaling(AxisHelper::createDefaultScale(), Date(Date::SYSTEM))
-{
-}
-
-AxisUsage::~AxisUsage()
-{
-    aCoordinateSystems.clear();
-}
-
-void AxisUsage::addCoordinateSystem( VCoordinateSystem* pCooSys, sal_Int32 nDimensionIndex, sal_Int32 nAxisIndex )
-{
-    if(!pCooSys)
-        return;
-
-    tFullAxisIndex aFullAxisIndex( nDimensionIndex, nAxisIndex );
-    tCoordinateSystemMap::const_iterator aFound( aCoordinateSystems.find(pCooSys) );
-
-    //use one scale only once for each coordinate system
-    //main axis are preferred over secondary axis
-    //value scales are preferred
-    if(aFound!=aCoordinateSystems.end())
-    {
-        sal_Int32 nFoundAxisIndex = aFound->second.second;
-        if( nFoundAxisIndex < nAxisIndex )
-            return;
-        sal_Int32 nFoundDimension = aFound->second.first;
-        if( nFoundDimension ==1 )
-            return;
-        if( nFoundDimension < nDimensionIndex )
-            return;
-    }
-    aCoordinateSystems[pCooSys] = aFullAxisIndex;
-
-    //set maximum scale index
-    std::map< sal_Int32, sal_Int32 >::const_iterator aIter = aMaxIndexPerDimension.find(nDimensionIndex);
-    if( aIter != aMaxIndexPerDimension.end() )
-    {
-        sal_Int32 nCurrentMaxIndex = aIter->second;
-        if( nCurrentMaxIndex < nAxisIndex )
-            aMaxIndexPerDimension[nDimensionIndex]=nAxisIndex;
-    }
-    else
-        aMaxIndexPerDimension[nDimensionIndex]=nAxisIndex;
-}
-
-std::vector< VCoordinateSystem* > AxisUsage::getCoordinateSystems( sal_Int32 nDimensionIndex, sal_Int32 nAxisIndex )
-{
-    std::vector< VCoordinateSystem* > aRet;
-
-    for (auto const& coordinateSystem : aCoordinateSystems)
-    {
-        if( coordinateSystem.second.first != nDimensionIndex )
-            continue;
-        if( coordinateSystem.second.second != nAxisIndex )
-            continue;
-        aRet.push_back( coordinateSystem.first );
-    }
-
-    return aRet;
-}
-
-sal_Int32 AxisUsage::getMaxAxisIndexForDimension( sal_Int32 nDimensionIndex )
-{
-    sal_Int32 nRet = -1;
-    std::map< sal_Int32, sal_Int32 >::const_iterator aIter = aMaxIndexPerDimension.find(nDimensionIndex);
-    if( aIter != aMaxIndexPerDimension.end() )
-        nRet = aIter->second;
-    return nRet;
-}
-
-void AxisUsage::prepareAutomaticAxisScaling( ScaleAutomatism& rScaleAutomatism, sal_Int32 nDimIndex, sal_Int32 nAxisIndex )
-{
-    std::vector<VCoordinateSystem*> aVCooSysList = getCoordinateSystems(nDimIndex, nAxisIndex);
-    for (VCoordinateSystem * i : aVCooSysList)
-        i->prepareAutomaticAxisScaling(rScaleAutomatism, nDimIndex, nAxisIndex);
-}
-
-void AxisUsage::setExplicitScaleAndIncrement(
-    sal_Int32 nDimIndex, sal_Int32 nAxisIndex, const ExplicitScaleData& rScale, const ExplicitIncrementData& rInc )
-{
-    std::vector<VCoordinateSystem*> aVCooSysList = getCoordinateSystems(nDimIndex, nAxisIndex);
-    for (VCoordinateSystem* i : aVCooSysList)
-        i->setExplicitScaleAndIncrement(nDimIndex, nAxisIndex, rScale, rInc);
-}
-
 typedef std::vector<std::unique_ptr<VSeriesPlotter> > SeriesPlottersType;
 
 /** This class is a container of `SeriesPlotter` objects (such as `PieChart`