Legacy Size negotiation mapper

[platform/core/uifw/dali-toolkit.git] / dali-toolkit / devel-api / layouting / layout-item-impl.cpp

diff --git a/dali-toolkit/devel-api/layouting/layout-item-impl.cpp b/dali-toolkit/devel-api/layouting/layout-item-impl.cpp
index 78cd532..f70a5f1 100644 (file)
--- a/dali-toolkit/devel-api/layouting/layout-item-impl.cpp
+++ b/dali-toolkit/devel-api/layouting/layout-item-impl.cpp
@@ -159,7 +159,11 @@ void LayoutItem::Measure( MeasureSpec widthMeasureSpec, MeasureSpec heightMeasur
 
   const bool needsLayout = specChanged && ( !isSpecExactly || !matchesSpecSize );
 
-  DALI_LOG_STREAM( gLayoutFilter, Debug::General, "LayoutItem::Measure("<<widthMeasureSpec<<", "<<heightMeasureSpec<<") Owner:"<<Actor::DownCast(GetOwner()).GetName() <<"  forceLayout="<<forceLayout<<", specChanged="<<specChanged<<", isSpecExactly="<<isSpecExactly<<", matchesSpecSize="<<matchesSpecSize<<", needsLayout="<<needsLayout <<std::endl <<(forceLayout||needsLayout?"  Remeasuring":"  NoChange"));
+  DALI_LOG_STREAM( gLayoutFilter, Debug::Verbose, "LayoutItem::Measure("<<widthMeasureSpec<<", "<<heightMeasureSpec<<") Owner:"
+                                                  <<Actor::DownCast(GetOwner()).GetName() <<"  forceLayout="<<forceLayout
+                                                  <<", specChanged="<<specChanged<<", isSpecExactly="<<isSpecExactly
+                                                  <<", matchesSpecSize="<<matchesSpecSize
+                                                  <<", needsLayout="<<needsLayout <<(forceLayout||needsLayout?"  Remeasuring":"  NoChange"));
 
   if( forceLayout || needsLayout )
   {
@@ -266,6 +270,8 @@ LayoutLength LayoutItem::GetDefaultSize( LayoutLength size, MeasureSpec measureS
   auto specMode = measureSpec.GetMode();
   auto specSize = measureSpec.GetSize();
 
+  DALI_LOG_STREAM( gLayoutFilter, Debug::Verbose, "LayoutItem::GetDefaultSize MeasureSpec("<<measureSpec<< ") size:" << size << "\n" );
+
   switch (specMode)
   {
     case MeasureSpec::Mode::UNSPECIFIED:
@@ -275,8 +281,12 @@ LayoutLength LayoutItem::GetDefaultSize( LayoutLength size, MeasureSpec measureS
     }
     case MeasureSpec::Mode::AT_MOST:
     {
+      // Ensure the default size does not exceed the spec size unless the default size is 0.
+      // Another container could provide a default size of 0.
       LayoutLength tmp = specSize;
-      if( size < tmp )
+
+      // Do not set size to 0, use specSize in this case as could be a legacy container
+      if( size < tmp && size > LayoutLength( 0 ) )
       {
         result = size;
       }
@@ -292,6 +302,7 @@ LayoutLength LayoutItem::GetDefaultSize( LayoutLength size, MeasureSpec measureS
       break;
     }
   }
+  DALI_LOG_STREAM( gLayoutFilter, Debug::General, "LayoutItem::GetDefaultSize setting default size:" << result << "\n" );
   return result;
 }
 
@@ -299,6 +310,7 @@ void LayoutItem::OnMeasure( MeasureSpec widthMeasureSpec, MeasureSpec heightMeas
 {
   DALI_LOG_INFO( gLayoutFilter, Debug::Verbose, "LayoutItem::OnMeasure\n");
 
+  // GetDefaultSize will limit the MeasureSpec to the suggested minimumWidth and minimumHeight
   SetMeasuredDimensions( GetDefaultSize( GetSuggestedMinimumWidth(), widthMeasureSpec ),
                          GetDefaultSize( GetSuggestedMinimumHeight(), heightMeasureSpec ) );
 }
@@ -310,10 +322,7 @@ void LayoutItem::OnLayout( bool changed, LayoutLength left, LayoutLength top, La
 void LayoutItem::SetParent( LayoutParent* parent )
 {
   mImpl->mLayoutParent = parent;
-  if ( parent == nullptr )
-  {
-    mImpl->ClearPrivateFlag( Impl::PRIVATE_FLAG_FORCE_SET_FRAME );
-  }
+  mImpl->SetPrivateFlag( Impl::PRIVATE_FLAG_FORCE_SET_FRAME );
 }
 
 LayoutParent* LayoutItem::GetParent()
@@ -344,9 +353,28 @@ void LayoutItem::SetLayoutRequested()
   mImpl->SetPrivateFlag( Impl::PRIVATE_FLAG_FORCE_LAYOUT );
 }
 
+bool LayoutItem::IsResizePolicyRequired() const
+{
+  return mImpl->GetPrivateFlag( Impl::PRIVATE_FLAG_USE_RESIZE_POLICY );
+}
+
+void LayoutItem::SetResizePolicyRequired( bool resizePolicyRequired )
+{
+  if( resizePolicyRequired )
+  {
+    mImpl->SetPrivateFlag( Impl::PRIVATE_FLAG_USE_RESIZE_POLICY );
+  }
+  else
+  {
+    mImpl->ClearPrivateFlag( Impl::PRIVATE_FLAG_USE_RESIZE_POLICY );
+  }
+}
+
 void LayoutItem::SetMeasuredDimensions( MeasuredSize measuredWidth, MeasuredSize measuredHeight )
 {
-  DALI_LOG_STREAM( gLayoutFilter, Debug::Verbose, "LayoutItem::SetMeasuredDimensions width(" << measuredWidth.GetSize() << ") height(" << measuredHeight.GetSize() << ") \n" );
+
+  DALI_LOG_STREAM( gLayoutFilter, Debug::Verbose, "LayoutItem::SetMeasuredDimensions width(" << measuredWidth.GetSize() << ") height(" << measuredHeight.GetSize() << ") Control:" <<
+                        ( ( Actor::DownCast( GetOwner()) ) ? Actor::DownCast(GetOwner()).GetName().c_str() : "Invalid Actor" ) << "\n" );
 
   mImpl->SetPrivateFlag( Impl::PRIVATE_FLAG_MEASURED_DIMENSION_SET );
   mImpl->mMeasuredWidth = measuredWidth;
@@ -438,7 +466,7 @@ bool LayoutItem::SetFrame( LayoutLength left, LayoutLength top, LayoutLength rig
 
   DALI_LOG_STREAM( gLayoutFilter, Debug::Verbose, "LayoutItem::SetFrame enter(" << left << ", " << top << ", " << right << ", " << bottom << ")\n" );
 
-  if( mImpl->mLeft != left || mImpl->mRight != right || mImpl->mTop != top || mImpl->mBottom != bottom || !mImpl->GetPrivateFlag( Impl::PRIVATE_FLAG_FORCE_SET_FRAME ) )
+  if( mImpl->mLeft != left || mImpl->mRight != right || mImpl->mTop != top || mImpl->mBottom != bottom || mImpl->GetPrivateFlag( Impl::PRIVATE_FLAG_FORCE_SET_FRAME ) )
   {
     changed = true;
 
@@ -453,7 +481,7 @@ bool LayoutItem::SetFrame( LayoutLength left, LayoutLength top, LayoutLength rig
     mImpl->mRight = right;
     mImpl->mBottom = bottom;
 
-    mImpl->SetPrivateFlag( Impl::PRIVATE_FLAG_FORCE_SET_FRAME );
+    mImpl->ClearPrivateFlag( Impl::PRIVATE_FLAG_FORCE_SET_FRAME );
 
 
     // Reflect up to parent control