The return value of std::count_if is guaranteed to be non-negative

...so use o3tl::make_unsigned when comparing it against an expression of
unsigned integer type, instead of casting that expression to a signed type

Change-Id: I487fd04eafbf8c56b8b6bfce579b477d8f34a052
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/135206
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

slideshow/source/engine/animationnodes/basecontainernode.cxx

@@ -24,6 +24,7 @@
 #include <eventqueue.hxx>
 #include "nodetools.hxx"
 #include <delayevent.hxx>
+#include <o3tl/safeint.hxx>
 #include <sal/log.hxx>
 
 #include <functional>
@@ -80,10 +81,10 @@ bool BaseContainerNode::init_children()
     mnFinishedChildren = 0;
 
     // initialize all children
-    return (std::count_if(
+    return (o3tl::make_unsigned(std::count_if(
                 maChildren.begin(), maChildren.end(),
-                std::mem_fn(&AnimationNode::init) ) ==
-            static_cast<VectorOfNodes::difference_type>(maChildren.size()));
+                std::mem_fn(&AnimationNode::init) )) ==
+            maChildren.size());
 }
 
 void BaseContainerNode::deactivate_st( NodeState eDestState )

slideshow/source/engine/shapes/appletshape.cxx

@@ -23,6 +23,7 @@
 #include "viewappletshape.hxx"
 #include <tools.hxx>
 
+#include <o3tl/safeint.hxx>
 #include <osl/diagnose.h>
 
 #include <algorithm>
@@ -210,12 +211,12 @@ namespace slideshow::internal
         bool AppletShape::implRender( const ::basegfx::B2DRange& rCurrBounds ) const
         {
             // redraw all view shapes, by calling their update() method
-            if( ::std::count_if( maViewAppletShapes.begin(),
+            if( o3tl::make_unsigned(::std::count_if( maViewAppletShapes.begin(),
                                  maViewAppletShapes.end(),
                                  [&rCurrBounds]
                                  ( const ViewAppletShapeSharedPtr& pShape )
-                                 { return pShape->render( rCurrBounds ); } )
-                != static_cast<ViewAppletShapeVector::difference_type>(maViewAppletShapes.size()) )
+                                 { return pShape->render( rCurrBounds ); } ))
+                != maViewAppletShapes.size() )
             {
                 // at least one of the ViewShape::update() calls did return
                 // false - update failed on at least one ViewLayer

slideshow/source/engine/shapes/backgroundshape.cxx

@@ -21,6 +21,7 @@
 #include <com/sun/star/beans/XPropertySet.hpp>
 
 #include <sal/log.hxx>
+#include <o3tl/safeint.hxx>
 #include <osl/diagnose.h>
 
 #include <algorithm>
@@ -258,11 +259,11 @@ namespace slideshow::internal
             }
 
             // redraw all view shapes, by calling their render() method
-            if( ::std::count_if( maViewShapes.begin(),
+            if( o3tl::make_unsigned(::std::count_if( maViewShapes.begin(),
                                  maViewShapes.end(),
                                  [this]( const ViewBackgroundShapeSharedPtr& pBgShape )
-                                 { return pBgShape->render( this->mpMtf ); } )
-                != static_cast<ViewBackgroundShapeVector::difference_type>(maViewShapes.size()) )
+                                 { return pBgShape->render( this->mpMtf ); } ))
+                != maViewShapes.size() )
             {
                 // at least one of the ViewBackgroundShape::render() calls did return
                 // false - update failed on at least one ViewLayer

slideshow/source/engine/shapes/drawshape.cxx

@@ -21,6 +21,7 @@
 
 #include <sal/log.hxx>
 #include <com/sun/star/beans/XPropertySet.hpp>
+#include <o3tl/safeint.hxx>
 
 #include <vcl/metaact.hxx>
 #include <vcl/gdimtf.hxx>
@@ -146,15 +147,15 @@ namespace slideshow::internal
             // redraw all view shapes, by calling their update() method
             ViewShape::RenderArgs renderArgs( getViewRenderArgs() );
             bool bVisible = isVisible();
-            if( ::std::count_if( maViewShapes.begin(),
+            if( o3tl::make_unsigned(::std::count_if( maViewShapes.begin(),
                                  maViewShapes.end(),
                                  [this, &bVisible, &renderArgs, &nUpdateFlags]
                                  ( const ViewShapeSharedPtr& pShape )
                                  { return pShape->update( this->mpCurrMtf,
                                                           renderArgs,
                                                           nUpdateFlags,
-                                                          bVisible ); } )
-                != static_cast<ViewShapeVector::difference_type>(maViewShapes.size()) )
+                                                          bVisible ); } ))
+                != maViewShapes.size() )
             {
                 // at least one of the ViewShape::update() calls did return
                 // false - update failed on at least one ViewLayer

slideshow/source/engine/shapes/mediashape.cxx

@@ -19,6 +19,7 @@
 
 
 #include <com/sun/star/drawing/XShape.hpp>
+#include <o3tl/safeint.hxx>
 #include <osl/diagnose.h>
 
 #include "mediashape.hxx"
@@ -175,12 +176,12 @@ namespace slideshow::internal
         bool MediaShape::implRender( const ::basegfx::B2DRange& rCurrBounds ) const
         {
             // redraw all view shapes, by calling their update() method
-            if( ::std::count_if( maViewMediaShapes.begin(),
+            if( o3tl::make_unsigned(::std::count_if( maViewMediaShapes.begin(),
                                  maViewMediaShapes.end(),
                                  [&rCurrBounds]
                                  ( const ViewMediaShapeSharedPtr& pShape )
-                                 { return pShape->render( rCurrBounds ); } )
-                != static_cast<ViewMediaShapeVector::difference_type>(maViewMediaShapes.size()) )
+                                 { return pShape->render( rCurrBounds ); } ))
+                != maViewMediaShapes.size() )
             {
                 // at least one of the ViewShape::update() calls did return
                 // false - update failed on at least one ViewLayer