void UKUIInterfaceElement::RemoveAlignedToThis( UKUIInterfaceElement* oAlignChild )
{
// Can't remove a null pointer
if ( oAlignChild == NULL )
{
KUIErrorUO( "Trying to remove null align child" );
return;
}
// Check if we're actually in the children array.
int32 iIndex = INDEX_NONE;
for ( int32 i = 0; i < arAlignedToThis.Num(); ++i )
{
if ( arAlignedToThis[ i ] != oAlignChild )
continue;
iIndex = i;
break;
}
// It wasn't
if ( iIndex == INDEX_NONE )
{
KUIErrorDebugUO( "Trying to remove an align child not aligned to this element" );
return;
}
// Swap out the highest index with this child, to maintain contiguity.
int32 iHighestIndex = INDEX_NONE;
for ( int32 i = arAlignedToThis.Num() - 1; i > iIndex; --i )
{
if ( !arAlignedToThis[ i ].IsValid() )
continue;
iHighestIndex = i;
break;
}
// We found a highest child, so swap. Otherwise, we were the highest child and no sort is necessary.
if ( iHighestIndex != INDEX_NONE )
arAlignedToThis[ iIndex ] = arAlignedToThis[ iHighestIndex ];
// Reduce the size of the array by 1.
arAlignedToThis.SetNum( iIndex );
}
void UKUISubContainerRenderCache::UpdateRenderCache( UKUIInterfaceElement* oElement )
{
if ( oElement == NULL )
{
KUIErrorUO( "Null element" );
return;
}
KUILogUO( "Updating Render Cache" );
UKUISubContainer* const ctSub = Cast<UKUISubContainer>( oElement );
const FVector2D v2ElemSize = ctSub->GetTotalSize();
if ( v2ElemSize.X < 1.f || v2ElemSize.Y < 1.f )
{
KUIErrorUO( "Element is zero size" );
return;
}
bool bRebuildTexture = false;
if ( GetTexture() == NULL )
bRebuildTexture = true;
else if ( v2ElemSize.X != GetTexture()->GetSurfaceWidth() || v2ElemSize.Y != GetTexture()->GetSurfaceHeight() )
bRebuildTexture = true;
if ( bRebuildTexture )
CreateRenderCache( v2ElemSize );
if ( GetTexture() == NULL )
{
KUIErrorUO( "Texture is null" );
return;
}
if ( !GetTexture()->IsA<UTextureRenderTarget2D>() )
{
KUIErrorUO( "Texture is not a render target" );
return;
}
UTextureRenderTarget2D* const tRenderTarget = Cast<UTextureRenderTarget2D>( GetTexture() );
tRenderTarget->UpdateResource();
tRenderTarget->UpdateResourceImmediate();
UCanvas* uoCanvas = Cast<UCanvas>( StaticFindObjectFast( UCanvas::StaticClass(), GetTransientPackage(), FName( TEXT( "Sub Container Render Cache Canvas" ) ) ) );
if ( uoCanvas == NULL )
{
uoCanvas = NewObject<UCanvas>( GetTransientPackage(), FName( TEXT( "Sub Container Render Cache Canvas" ) ) );
uoCanvas->AddToRoot();
}
uoCanvas->Init( floor( v2ElemSize.X ), floor( v2ElemSize.Y ), NULL );
uoCanvas->Update();
ENQUEUE_UNIQUE_RENDER_COMMAND_ONEPARAMETER(
CanvasRenderTargetMakeCurrentCommand,
FTextureRenderTarget2DResource*,
TextureRenderTarget,
static_cast<FTextureRenderTarget2DResource*>( tRenderTarget->GameThread_GetRenderTargetResource() ),
{
SetRenderTarget( RHICmdList, TextureRenderTarget->GetRenderTargetTexture(), FTexture2DRHIRef() );
RHICmdList.SetViewport( 0, 0, 0.0f, TextureRenderTarget->GetSizeXY().X, TextureRenderTarget->GetSizeXY().Y, 1.0f );
}
void UKUIScrollContainer::UpdateScrollbarMetrics()
{
if ( !ctScrollArea.IsValid() )
{
KUIErrorUO( "Null scroll area" );
return;
}
FVector2D v2ScrollContainerSize = GetSize();
const FVector2D v2ScrollTotalSize = ctScrollArea->GetTotalSize();
if ( v2ScrollTotalSize.X > v2ScrollContainerSize.X )
v2ScrollContainerSize.X -= v2ScrollBarSize.X;
if ( v2ScrollTotalSize.Y > v2ScrollContainerSize.Y )
v2ScrollContainerSize.Y -= v2ScrollBarSize.Y;
// Check again to see if the vertical scrollbar means we need to scroll.
if ( v2ScrollTotalSize.X > v2ScrollContainerSize.X )
v2ScrollContainerSize.X -= v2ScrollBarSize.X;
ctScrollArea->SetSizeStruct( v2ScrollContainerSize );
const FVector2D v2Size = GetSize();
if ( v2ScrollContainerSize.X >= v2Size.X && v2ScrollContainerSize.Y >= v2Size.Y )
{
if ( cmHorizontalScrollBar.IsValid() )
cmHorizontalScrollBar->SetVisible( false );
if ( cmVerticalScrollBar.IsValid() )
cmVerticalScrollBar->SetVisible( false );
if ( oCornerComponent.IsValid() )
oCornerComponent->SetVisible( false );
}
else if ( v2ScrollContainerSize.Y >= v2Size.Y )
{
if ( cmHorizontalScrollBar.IsValid() )
{
cmHorizontalScrollBar->SetVisible( true );
cmHorizontalScrollBar->SetSize( v2Size.X, v2ScrollBarSize.Y );
}
if ( cmVerticalScrollBar.IsValid() )
cmVerticalScrollBar->SetVisible( false );
if ( oCornerComponent.IsValid() )
oCornerComponent->SetVisible( false );
}
else if ( v2ScrollContainerSize.X >= v2Size.X )
{
if ( cmHorizontalScrollBar.IsValid() )
cmHorizontalScrollBar->SetVisible( false );
if ( cmVerticalScrollBar.IsValid() )
{
cmVerticalScrollBar->SetVisible( true );
cmVerticalScrollBar->SetSize( v2ScrollBarSize.X, v2Size.Y );
}
if ( oCornerComponent.IsValid() )
oCornerComponent->SetVisible( false );
}
else
{
if ( cmHorizontalScrollBar.IsValid() )
{
cmHorizontalScrollBar->SetVisible( true );
cmHorizontalScrollBar->SetSize( v2Size.X - v2ScrollBarSize.X, v2ScrollBarSize.Y );
}
if ( cmVerticalScrollBar.IsValid() )
{
cmVerticalScrollBar->SetVisible( true );
cmVerticalScrollBar->SetSize( v2ScrollBarSize.X, v2Size.Y - v2ScrollBarSize.Y );
}
if ( oCornerComponent.IsValid() )
{
oCornerComponent->SetVisible( true );
oCornerComponent->SetSize( v2Size.X, v2Size.Y );
}
}
}
