// ------------------------------------------------------------------------------------------------
//                                                           ___                  __   ___    ___ ®    
// Copyright © 2009-2010, All rights reserved                 __)|    /\ \__||   /  \ /    | /    
// Playlogic games factory, Breda                            |   |___/__\ __||___\__/ \__| | \___   
//
// ------------------------------------------------------------------------------------------------

#include "PLBase.h"
#include "PLTextTextureResource.h"

FPLTextTextureResource::FPLTextTextureResource( const class UPLTextTexture* InOwner )
	: FTextureRenderTarget2DResource( InOwner )
	, Owner( InOwner )
{
	if ( InOwner != NULL )
	{
		TextLines = InOwner->TextLines;
		TextSizeX = appTrunc( InOwner->TextSize.X );
		TextSizeY = appTrunc( InOwner->TextSize.Y );
		TextColor = FLinearColor( InOwner->TextColor );
		BackgroundColor = FLinearColor( InOwner->BackgroundColor );
		bMaskedText = InOwner->bMaskedText;
	}
}

void FPLTextTextureResource::UpdateResource()
{
	// clear the target surface
	RHISetRenderTarget(RenderTargetSurfaceRHI,FSurfaceRHIRef());
	RHISetViewport(0,0,0.0f,TextSizeX,TextSizeY,1.0f);
	RHIClear(TRUE,BackgroundColor,FALSE,0.f,FALSE,0);

	FCanvas Canvas( this, NULL );
	if ( Owner != NULL && Owner->TextFont != NULL )
	{
		// Render the text onto the canvas
		UFont* TextFont = Owner->TextFont;
		FLOAT Y = 0.0f;

		for ( TArray< FString >::TIterator Text( TextLines ); Text; ++Text )
		{
			INT Size = TextFont->GetStringSize( **Text );
			DrawString( &Canvas, TextSizeX * 0.5f - Size * 0.5f, Y, **Text, TextFont, TextColor, 1.0, 1.0, 0.0, NULL, bMaskedText ? SE_BLEND_Masked : SE_BLEND_Translucent );
			Y += TextFont->GetMaxCharHeight();
		}
	}
	// Flush the canvas
	Canvas.Flush();
	// copy surface to the texture for use
	RHICopyToResolveTarget(RenderTargetSurfaceRHI, TRUE, FResolveParams());
}