fdo#81356: convert Fraction to boost::rational<long> - wip

* Added rational util functions used by Fraction class not
available in the boost::rational class.
* Replaced usage of Fraction by boost::rational<long>
* Removed code that relies on:
1. fraction.IsValid() -- rational only allow valid values, ie
denominator() != 0
2. rational.denominator() == 0 -- always false
3. rational.denominator() < 0 -- always false but implementation
detail: http://www.boost.org/doc/libs/release/libs/rational/rational.html#Internal%20representation
* Simplified code that relies on:
1. rational.denominator() != 0 -- always true
* BUGS EXIST because Fraction allows the creation of invalid values but
boost::rational throws the exception boost::bad_rational

Change-Id: I84970a4956afb3f91ac0c8f726547466319420f9
Reviewed-on: https://gerrit.libreoffice.org/11551
Reviewed-by: David Tardon <dtardon@redhat.com>
Tested-by: David Tardon <dtardon@redhat.com>

2 files changed, 3 insertions, 3 deletions

diff --git a/include/svx/sdr/properties/defaultproperties.hxx b/include/svx/sdr/properties/defaultproperties.hxx
index 97fca16cb310..9e9defe1e65a 100644
--- a/include/svx/sdr/properties/defaultproperties.hxx
+++ b/include/svx/sdr/properties/defaultproperties.hxx
@@ -94,7 +94,7 @@ namespace sdr
             virtual void ForceDefaultAttributes();
 
             // Scale the included ItemSet.
-            virtual void Scale(const Fraction& rScale) SAL_OVERRIDE;
+            virtual void Scale(const boost::rational<long>& rScale) SAL_OVERRIDE;
         };
     } // end of namespace properties
 } // end of namespace sdr
diff --git a/include/svx/sdr/properties/properties.hxx b/include/svx/sdr/properties/properties.hxx
index 6229e45e388e..2bb32dfae246 100644
--- a/include/svx/sdr/properties/properties.hxx
+++ b/include/svx/sdr/properties/properties.hxx
@@ -30,7 +30,7 @@ class SdrObject;
 class SfxItemSet;
 class SfxPoolItem;
 class SfxStyleSheet;
-class Fraction;
+namespace boost { template<typename T> class rational; }
 class SfxItemPool;
 class SdrModel;
 
@@ -146,7 +146,7 @@ namespace sdr
 
             // Scale the local ItemSet as far as it contains metric items. This needs to be
             // overloaded to do it for hierarchical objects like e.g. groups.
-            virtual void Scale(const Fraction& rScale);
+            virtual void Scale(const boost::rational<long>& rScale);
 
             // Move local items to a new ItemPool. This needs to be
             // overloaded to do it for hierarchical objects like e.g. groups.