Changed: Allow to override scroll bar texture width/height

--HG--
branch : develop

code/nel/include/nel/gui/ctrl_scroll.h

@@ -175,6 +175,7 @@ namespace NLGUI
 		bool	_CallingAH  : 1;
 		bool	_Cancelable : 1; // true if the slider may be cancelled when pressed on the mouse right button
 		bool	_Frozen		: 1;
+		bool	_Scale		: 1;
 
 		// For Target Scroller only: the target offset step in pixel.
 		sint32	_TargetStepX;

code/nel/src/gui/ctrl_scroll.cpp

@@ -68,6 +68,7 @@ namespace NLGUI
 		_StepValue = 0;
 		_TileM = false;
 		_Frozen = false;
+		_Scale = false;
 	}
 
 	// ------------------------------------------------------------------------------------------------
@@ -108,6 +109,11 @@ namespace NLGUI
 			return getTextureTopOrRight();
 		}
 		else
+		if( name == "scale" )
+		{
+			return toString( _Scale );
+		}
+		else
 		if( name == "vertical" )
 		{
 			return toString( _Vertical );
@@ -244,6 +250,14 @@ namespace NLGUI
 			return;
 		}
 		else
+		if( name =="scale" )
+		{
+			bool b;
+			if (fromString( value, b ) )
+				_Scale = b;
+			return;
+		}
+		else
 		if( name == "vertical" )
 		{
 			bool b;
@@ -408,6 +422,7 @@ namespace NLGUI
 		xmlSetProp( node, BAD_CAST "tx_bottomleft", BAD_CAST getTextureBottomOrLeft().c_str() );
 		xmlSetProp( node, BAD_CAST "tx_middle", BAD_CAST getTextureMiddle().c_str() );
 		xmlSetProp( node, BAD_CAST "tx_topright", BAD_CAST getTextureTopOrRight().c_str() );
+		xmlSetProp( node, BAD_CAST "scale", BAD_CAST toString( _Scale ).c_str() );
 		xmlSetProp( node, BAD_CAST "vertical", BAD_CAST toString( _Vertical ).c_str() );
 		
 		std::string align;
@@ -480,6 +495,10 @@ namespace NLGUI
 		if(prop) setTextureTopOrRight(string((const char*)prop));
 		else setTextureTopOrRight ("w_scroll_l0_t.tga");
 
+		// Override texture size (w for vertical, h for horizontal)
+		prop = (char*) xmlGetProp( node, (xmlChar*)"scale" );
+		if (prop) _Scale = convertBool((const char*)prop);
+
 		// Read properties
 		prop = (char*) xmlGetProp( node, (xmlChar*)"vertical" );
 		if (prop) _Vertical = convertBool((const char*)prop);
@@ -606,13 +625,13 @@ namespace NLGUI
 
 				if (_Vertical)
 				{
-					_W = w;
+					if (!_Scale) _W = w;
 					_H = _Target->getMaxHReal();
 				}
 				else
 				{
 					_W = _Target->getMaxWReal();
-					_H = h;
+					if (!_Scale) _H = h;
 				}
 
 				CCtrlBase::updateCoords ();