canvas: replace while loops with range-based for

Change-Id: Ide16bee666cf4df41646f9336a585e22a7fe53bd
Reviewed-on: https://gerrit.libreoffice.org/18131
Reviewed-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>
Tested-by: Thorsten Behrens <Thorsten.Behrens@CIB.de>

7 files changed, 54 insertions, 104 deletions

diff --git a/canvas/source/directx/dx_config.cxx b/canvas/source/directx/dx_config.cxx
index e4abde4dda51..be4c3c70bbf2 100644
--- a/canvas/source/directx/dx_config.cxx
+++ b/canvas/source/directx/dx_config.cxx
@@ -102,11 +102,9 @@ namespace dxcanvas
             uno::Sequence< sal_Int32 > aValues( sizeof(DeviceInfo)/sizeof(sal_Int32)*maValues.size() );
 
             sal_Int32* pValues = aValues.getArray();
-            ValueSet::const_iterator aIter( maValues.begin() );
-            const ValueSet::const_iterator aEnd( maValues.end() );
-            while( aIter != aEnd )
+            for( const auto& rValueSet : maValues )
             {
-                const DeviceInfo& rInfo( *aIter );
+                const DeviceInfo& rInfo( rValueSet );
                 *pValues++ = rInfo.nVendorId;
                 *pValues++ = rInfo.nDeviceId;
                 *pValues++ = rInfo.nDeviceSubSysId;
@@ -115,7 +113,6 @@ namespace dxcanvas
                 *pValues++ = rInfo.nDriverVersion;
                 *pValues++ = rInfo.nDriverSubVersion;
                 *pValues++ = rInfo.nDriverBuildId;
-                ++aIter;
             }
 
             uno::Sequence< uno::Any > aValue(1);
diff --git a/canvas/source/opengl/ogl_canvashelper.cxx b/canvas/source/opengl/ogl_canvashelper.cxx
index 1534f7c3b10a..61a677350fa0 100644
--- a/canvas/source/opengl/ogl_canvashelper.cxx
+++ b/canvas/source/opengl/ogl_canvashelper.cxx
@@ -139,10 +139,8 @@ namespace oglcanvas
             TransformationPreserver aPreserver;
             setupState(rTransform, eSrcBlend, eDstBlend, rColor);
 
-            ::basegfx::B2DPolyPolygonVector::const_iterator aCurr=rPolyPolygons.begin();
-            const ::basegfx::B2DPolyPolygonVector::const_iterator aEnd=rPolyPolygons.end();
-            while( aCurr != aEnd )
-                renderPolyPolygon(*aCurr++);
+            for( const auto& rPoly : rPolyPolygons )
+                renderPolyPolygon( rPoly );
 
             return true;
         }
@@ -157,12 +155,10 @@ namespace oglcanvas
             TransformationPreserver aPreserver;
             setupState(rTransform, eSrcBlend, eDstBlend, rColor);
 
-            ::basegfx::B2DPolyPolygonVector::const_iterator aCurr=rPolyPolygons.begin();
-            const ::basegfx::B2DPolyPolygonVector::const_iterator aEnd=rPolyPolygons.end();
-            while( aCurr != aEnd )
+            for( const auto& rPoly : rPolyPolygons )
             {
-                glBegin(GL_TRIANGLES);
-                renderComplexPolyPolygon(*aCurr++);
+                glBegin( GL_TRIANGLES );
+                renderComplexPolyPolygon( rPoly );
                 glEnd();
             }
 
@@ -186,10 +182,8 @@ namespace oglcanvas
             ::basegfx::unotools::homMatrixFromAffineMatrix( aTextureTransform,
                                                             rTexture.AffineTransform );
             ::basegfx::B2DRange aBounds;
-            ::basegfx::B2DPolyPolygonVector::const_iterator aCurr=rPolyPolygons.begin();
-            const ::basegfx::B2DPolyPolygonVector::const_iterator aEnd=rPolyPolygons.end();
-            while( aCurr != aEnd )
-                aBounds.expand(::basegfx::tools::getRange(*aCurr++));
+            for( const auto& rPoly : rPolyPolygons )
+                aBounds.expand( ::basegfx::tools::getRange( rPoly ) );
             aTextureTransform.translate(-aBounds.getMinX(), -aBounds.getMinY());
             aTextureTransform.scale(1/aBounds.getWidth(), 1/aBounds.getHeight());
 
@@ -228,11 +222,10 @@ namespace oglcanvas
             }
 
 
-            aCurr=rPolyPolygons.begin();
-            while( aCurr != aEnd )
+            for( const auto& rPoly : rPolyPolygons )
             {
                 glBegin(GL_TRIANGLES);
-                renderComplexPolyPolygon(*aCurr++);
+                renderComplexPolyPolygon( rPoly );
                 glEnd();
             }
 
@@ -333,10 +326,8 @@ namespace oglcanvas
             ::basegfx::unotools::homMatrixFromAffineMatrix( aTextureTransform,
                                                             rTexture.AffineTransform );
             ::basegfx::B2DRange aBounds;
-            ::basegfx::B2DPolyPolygonVector::const_iterator aCurr=rPolyPolygons.begin();
-            const ::basegfx::B2DPolyPolygonVector::const_iterator aEnd=rPolyPolygons.end();
-            while( aCurr != aEnd )
-                aBounds.expand(::basegfx::tools::getRange(*aCurr++));
+            for( const auto& rPolyPolygon : rPolyPolygons )
+                aBounds.expand( ::basegfx::tools::getRange( rPolyPolygon ) );
             aTextureTransform.translate(-aBounds.getMinX(), -aBounds.getMinY());
             aTextureTransform.scale(1/aBounds.getWidth(), 1/aBounds.getHeight());
             aTextureTransform.invert();
@@ -354,11 +345,10 @@ namespace oglcanvas
             // blend against fixed vertex color; texture alpha is multiplied in
             glColor4f(1,1,1,rTexture.Alpha);
 
-            aCurr=rPolyPolygons.begin();
-            while( aCurr != aEnd )
+            for( const auto& rPolyPolygon : rPolyPolygons )
             {
                 glBegin(GL_TRIANGLES);
-                renderComplexPolyPolygon(*aCurr++);
+                renderComplexPolyPolygon( rPolyPolygon );
                 glEnd();
             }
 
@@ -973,19 +963,15 @@ namespace oglcanvas
 
     bool CanvasHelper::renderRecordedActions() const
     {
-        std::vector<Action>::const_iterator aCurr(mpRecordedActions->begin());
-        const std::vector<Action>::const_iterator aEnd(mpRecordedActions->end());
-        while( aCurr != aEnd )
+        for( const auto& rRecordedAction : *mpRecordedActions )
         {
-            if( !aCurr->maFunction( *this,
-                                    aCurr->maTransform,
-                                    aCurr->meSrcBlendMode,
-                                    aCurr->meDstBlendMode,
-                                    aCurr->maARGBColor,
-                                    aCurr->maPolyPolys ) )
+            if( !rRecordedAction.maFunction( *this,
+                                             rRecordedAction.maTransform,
+                                             rRecordedAction.meSrcBlendMode,
+                                             rRecordedAction.meDstBlendMode,
+                                             rRecordedAction.maARGBColor,
+                                             rRecordedAction.maPolyPolys ) )
                 return false;
-
-            ++aCurr;
         }
 
         return true;
diff --git a/canvas/source/opengl/ogl_texturecache.cxx b/canvas/source/opengl/ogl_texturecache.cxx
index 6283bd883993..9335ff965808 100644
--- a/canvas/source/opengl/ogl_texturecache.cxx
+++ b/canvas/source/opengl/ogl_texturecache.cxx
@@ -37,12 +37,9 @@ namespace oglcanvas
         glBindTexture(GL_TEXTURE_2D, 0);
 
         // delete all cached textures
-        TextureCacheMapT::const_iterator aCurr=maCache.begin();
-        const TextureCacheMapT::const_iterator aEnd=maCache.end();
-        while( aCurr != aEnd )
+        for( const auto& rCache : maCache )
         {
-            glDeleteTextures(1, &aCurr->second.nTexture);
-            ++aCurr;
+            glDeleteTextures( 1, &rCache.second.nTexture );
         }
 
         maCache.clear();
@@ -56,22 +53,21 @@ namespace oglcanvas
         glBindTexture(GL_TEXTURE_2D, 0);
 
         // delete already "old" textures, mark "new" entries "old"
-        TextureCacheMapT::iterator aNext;
-        TextureCacheMapT::iterator aCurr=maCache.begin();
-        const TextureCacheMapT::iterator aEnd=maCache.end();
-        while( aCurr != aEnd )
+        const TextureCacheMapT::const_iterator aEnd = maCache.end();
+        TextureCacheMapT::iterator aNext = maCache.begin();
+        ++aNext;
+        for( auto aCurr = maCache.begin(); aCurr != aEnd; ++aNext )
         {
-            aNext=aCurr; ++aNext;
             if( aCurr->second.bOld )
             {
-                glDeleteTextures(1, &aCurr->second.nTexture);
-                maCache.erase(aCurr);
+                glDeleteTextures( 1, &aCurr->second.nTexture );
+                maCache.erase( aCurr );
             }
             else
             {
                 aCurr->second.bOld = true;
             }
-            aCurr=aNext;
+            aCurr = aNext;
         }
 
         mnMissCount = 0;
diff --git a/canvas/source/tools/canvascustomspritehelper.cxx b/canvas/source/tools/canvascustomspritehelper.cxx
index c02f890da09e..49a266ee6a91 100644
--- a/canvas/source/tools/canvascustomspritehelper.cxx
+++ b/canvas/source/tools/canvascustomspritehelper.cxx
@@ -123,17 +123,14 @@ namespace canvas
                     // translate this area to the final position,
                     // coordinates need to be relative to the
                     // spritecanvas.
-                    VectorOfRects::const_iterator       aCurr( aClipDifferences.begin() );
-                    const VectorOfRects::const_iterator aEnd( aClipDifferences.end() );
-                    while( aCurr != aEnd )
+                    for( const auto& rClipDiff : aClipDifferences )
                     {
                         mpSpriteCanvas->updateSprite(
                             rSprite,
                             maPosition,
                             ::basegfx::B2DRectangle(
-                                maPosition + aCurr->getMinimum(),
-                                maPosition + aCurr->getMaximum() ) );
-                        ++aCurr;
+                                maPosition + rClipDiff.getMinimum(),
+                                maPosition + rClipDiff.getMaximum() ) );
                     }
 
                     // update calls all done
diff --git a/canvas/source/tools/page.cxx b/canvas/source/tools/page.cxx
index b942b3b9fa15..d9b7c08f3f75 100644
--- a/canvas/source/tools/page.cxx
+++ b/canvas/source/tools/page.cxx
@@ -84,11 +84,9 @@ namespace canvas
 
     bool Page::insert( SurfaceRect& r )
     {
-        const FragmentContainer_t::const_iterator aEnd(mpFragments.end());
-        FragmentContainer_t::const_iterator       it(mpFragments.begin());
-        while(it != aEnd)
+        for( const auto& pFragment : mpFragments )
         {
-            const SurfaceRect &rect = (*it)->getRect();
+            const SurfaceRect &rect = pFragment->getRect();
             const sal_Int32 x = rect.maPos.getX();
             const sal_Int32 y = rect.maPos.getY();
             // to avoid interpolation artifacts from other textures,
@@ -107,8 +105,6 @@ namespace canvas
             r.maPos.setY(y+h);
             if(isValidLocation(r))
                 return true;
-
-            ++it;
         }
 
         r.maPos.setX(0);
@@ -126,14 +122,10 @@ namespace canvas
         if( !r.inside(aBoundary) )
             return false;
 
-        const FragmentContainer_t::const_iterator aEnd(mpFragments.end());
-        FragmentContainer_t::const_iterator       it(mpFragments.begin());
-        while(it != aEnd)
+        for( const auto& pFragment : mpFragments )
         {
-            if(r.intersection((*it)->getRect()))
+            if( r.intersection( pFragment->getRect() ) )
                 return false;
-
-            ++it;
         }
 
         return true;
diff --git a/canvas/source/tools/pagemanager.cxx b/canvas/source/tools/pagemanager.cxx
index 9b8466d7bb2c..f7faee000287 100644
--- a/canvas/source/tools/pagemanager.cxx
+++ b/canvas/source/tools/pagemanager.cxx
@@ -28,11 +28,9 @@ namespace canvas
         // we are asked to find a location for the requested size.
         // first we try to satisfy the request from the
         // remaining space in the existing pages.
-        const PageContainer_t::iterator aEnd(maPages.end());
-        PageContainer_t::iterator       it(maPages.begin());
-        while(it != aEnd)
+        for( const auto& pPage : maPages )
         {
-            FragmentSharedPtr pFragment((*it)->allocateSpace(rSize));
+            FragmentSharedPtr pFragment( pPage->allocateSpace(rSize) );
             if(pFragment)
             {
                 // the page created a new fragment, since we maybe want
@@ -41,8 +39,6 @@ namespace canvas
                 maFragments.push_back(pFragment);
                 return pFragment;
             }
-
-            ++it;
         }
 
         // otherwise try to create a new page and allocate space there...
@@ -140,23 +136,18 @@ namespace canvas
         // be naked, that is it is not located on any page.
         // we try all available pages again, maybe some
         // other fragment was deleted and we can exploit the space.
-        const PageContainer_t::iterator aEnd(maPages.end());
-        PageContainer_t::iterator       it(maPages.begin());
-        while(it != aEnd)
+        for( const auto& pPage : maPages )
         {
             // if the page at hand takes the fragment, we immediately
             // call select() to pull the information from the associated
             // image to the hardware surface.
-            if((*it)->nakedFragment(pFragment))
+            if( pPage->nakedFragment( pFragment ) )
             {
                 // dirty, since newly allocated.
                 pFragment->select(true);
                 return true;
             }
-
-            ++it;
         }
-
         return false;
     }
 
diff --git a/canvas/source/tools/spriteredrawmanager.cxx b/canvas/source/tools/spriteredrawmanager.cxx
index 8e2bebf49cfc..aa44097b3ea5 100644
--- a/canvas/source/tools/spriteredrawmanager.cxx
+++ b/canvas/source/tools/spriteredrawmanager.cxx
@@ -225,15 +225,12 @@ namespace canvas
         SpriteWeakOrder aSpriteComparator;
 
         // put all sprites that have changed content into update areas
-        ListOfSprites::const_iterator       aCurrSprite( maSprites.begin() );
-        const ListOfSprites::const_iterator aEndSprite ( maSprites.end() );
-        while( aCurrSprite != aEndSprite )
+        for( const auto& pSprite : maSprites )
         {
-            if( (*aCurrSprite)->isContentChanged() )
-                const_cast<SpriteRedrawManager*>(this)->updateSprite( *aCurrSprite,
-                                                                      (*aCurrSprite)->getPosPixel(),
-                                                                      (*aCurrSprite)->getUpdateArea() );
-            ++aCurrSprite;
+            if( pSprite->isContentChanged() )
+                const_cast< SpriteRedrawManager* >( this )->updateSprite( pSprite,
+                                                                          pSprite->getPosPixel(),
+                                                                          pSprite->getUpdateArea() );
         }
 
         // sort sprites after prio
@@ -250,14 +247,11 @@ namespace canvas
         // sprite pointer). This assumes that, until this scope
         // ends, nobody changes the maChangeRecords vector!
         VectorOfSprites aUpdatableSprites;
-        VectorOfChangeRecords::const_iterator       aCurrRecord( maChangeRecords.begin() );
-        const VectorOfChangeRecords::const_iterator aEndRecords( maChangeRecords.end() );
-        while( aCurrRecord != aEndRecords )
+        for( const auto& rChangeRecord : maChangeRecords )
         {
-            const Sprite::Reference& rSprite( aCurrRecord->getSprite() );
+            const Sprite::Reference& rSprite( rChangeRecord.getSprite() );
             if( rSprite.is() )
                 aUpdatableSprites.push_back( rSprite );
-            ++aCurrRecord;
         }
 
         ::std::sort( aUpdatableSprites.begin(),
@@ -294,17 +288,14 @@ namespace canvas
 
         // add each remaining unchanged sprite to connected ranges,
         // marked as "don't need update"
-        VectorOfSprites::const_iterator         aCurr( aUnchangedSprites.begin() );
-        const VectorOfSprites::const_iterator   aEnd2( aUnchangedSprites.end() );
-        while( aCurr != aEnd2 )
+        for( const auto& pUnchangedSprite : aUnchangedSprites )
         {
-            const ::basegfx::B2DRange& rUpdateArea( (*aCurr)->getUpdateArea() );
+            const ::basegfx::B2DRange& rUpdateArea( pUnchangedSprite->getUpdateArea() );
             rUpdateAreas.addRange(
                 ::basegfx::unotools::b2DSurroundingIntegerRangeFromB2DRange( rUpdateArea ),
-                SpriteInfo(*aCurr,
-                           rUpdateArea,
-                           false) );
-            ++aCurr;
+                SpriteInfo( pUnchangedSprite,
+                            rUpdateArea,
+                            false ) );
         }
     }