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+/** 
+ * @file lluiimage.h
+ * @brief wrapper for images used in the UI that handles smart scaling, etc.
+ *
+ * $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2010, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLUIIMAGE_H
+#define LL_LLUIIMAGE_H
+
+#include "v4color.h"
+#include "llpointer.h"
+#include "llrefcount.h"
+#include "llrefcount.h"
+#include "llrect.h"
+#include <boost/function.hpp>
+#include <boost/signals2.hpp>
+#include "llinitparam.h"
+#include "lltexture.h"
+
+extern const LLColor4 UI_VERTEX_COLOR;
+
+class LLUIImage : public LLRefCount
+{
+public:
+	typedef boost::signals2::signal<void (void)> image_loaded_signal_t;
+
+	LLUIImage(const std::string& name, LLPointer<LLTexture> image);
+	virtual ~LLUIImage();
+
+	void setClipRegion(const LLRectf& region);
+	void setScaleRegion(const LLRectf& region);
+
+	LLPointer<LLTexture> getImage() { return mImage; }
+	const LLPointer<LLTexture>& getImage() const { return mImage; }
+
+	void draw(S32 x, S32 y, S32 width, S32 height, const LLColor4& color = UI_VERTEX_COLOR) const;
+	void draw(S32 x, S32 y, const LLColor4& color = UI_VERTEX_COLOR) const;
+	void draw(const LLRect& rect, const LLColor4& color = UI_VERTEX_COLOR) const { draw(rect.mLeft, rect.mBottom, rect.getWidth(), rect.getHeight(), color); }
+	
+	void drawSolid(S32 x, S32 y, S32 width, S32 height, const LLColor4& color) const;
+	void drawSolid(const LLRect& rect, const LLColor4& color) const { drawSolid(rect.mLeft, rect.mBottom, rect.getWidth(), rect.getHeight(), color); }
+	void drawSolid(S32 x, S32 y, const LLColor4& color) const { drawSolid(x, y, getWidth(), getHeight(), color); }
+
+	void drawBorder(S32 x, S32 y, S32 width, S32 height, const LLColor4& color, S32 border_width) const;
+	void drawBorder(const LLRect& rect, const LLColor4& color, S32 border_width) const { drawBorder(rect.mLeft, rect.mBottom, rect.getWidth(), rect.getHeight(), color, border_width); }
+	void drawBorder(S32 x, S32 y, const LLColor4& color, S32 border_width) const { drawBorder(x, y, getWidth(), getHeight(), color, border_width); }
+
+	void draw3D(const LLVector3& origin_agent, const LLVector3& x_axis, const LLVector3& y_axis, const LLRect& rect, const LLColor4& color);
+
+	const std::string& getName() const { return mName; }
+
+	virtual S32 getWidth() const;
+	virtual S32 getHeight() const;
+
+	// returns dimensions of underlying textures, which might not be equal to ui image portion
+	S32 getTextureWidth() const;
+	S32 getTextureHeight() const;
+
+	boost::signals2::connection addLoadedCallback( const image_loaded_signal_t::slot_type& cb );
+
+	void onImageLoaded();
+
+protected:
+	image_loaded_signal_t* mImageLoaded;
+
+	std::string			mName;
+	LLRectf				mScaleRegion;
+	LLRectf				mClipRegion;
+	LLPointer<LLTexture> mImage;
+	BOOL				mUniformScaling;
+	BOOL				mNoClip;
+};
+
+namespace LLInitParam
+{
+	template<>
+	class ParamValue<LLUIImage*> 
+	:	public CustomParamValue<LLUIImage*>
+	{
+		typedef boost::add_reference<boost::add_const<LLUIImage*>::type>::type	T_const_ref;
+		typedef CustomParamValue<LLUIImage*> super_t;
+	public:
+		Optional<std::string> name;
+
+		ParamValue(LLUIImage* const& image = NULL)
+		:	super_t(image)
+		{
+			updateBlockFromValue(false);
+			addSynonym(name, "name");
+		}
+
+		void updateValueFromBlock();
+		void updateBlockFromValue(bool make_block_authoritative);
+	};
+
+	// Need custom comparison function for our test app, which only loads
+	// LLUIImage* as NULL.
+	template<>
+	struct ParamCompare<LLUIImage*, false>
+	{
+		static bool equals(LLUIImage* const &a, LLUIImage* const &b);
+	};
+}
+
+typedef LLPointer<LLUIImage> LLUIImagePtr;
+#endif