add initial examples, replacing the 'Demos/Demos3'. Will make it work cross-platform, OpenGL3/OpenGL2 and add more examples to it.

examples/ThirdPartyLibs/Gwen/Controls/Canvas.h

@@ -0,0 +1,107 @@
+/*
+	GWEN
+	Copyright (c) 2010 Facepunch Studios
+	See license in Gwen.h
+*/
+
+#pragma once
+#ifndef GWEN_CONTROLS_CANVAS_H
+#define GWEN_CONTROLS_CANVAS_H
+
+#include <set>
+#include "Gwen/Controls/Base.h"
+#include "Gwen/InputHandler.h"
+
+namespace Gwen 
+{
+	namespace Controls
+	{
+		class GWEN_EXPORT Canvas : public Base
+		{
+			public:
+
+				typedef Controls::Base BaseClass;
+
+				Canvas( Skin::Base* pSkin );
+
+				//
+				// For additional initialization 
+				// (which is sometimes not appropriate in the constructor)
+				//
+				virtual void Initialize(){};
+
+				//
+				// You should call this to render your canvas.
+				//
+				virtual void RenderCanvas();
+
+				//
+				// Call this whenever you want to process input. This
+				// is usually once a frame..
+				//
+				virtual void DoThink();
+
+				//
+				// In most situations you will be rendering the canvas
+				// every frame. But in some situations you will only want
+				// to render when there have been changes. You can do this
+				// by checking NeedsRedraw().
+				//
+				virtual bool NeedsRedraw(){ return m_bNeedsRedraw; }
+				virtual void Redraw(){ m_bNeedsRedraw = true; }
+
+				// Internal. Do not call directly.
+				virtual void Render( Skin::Base* pRender );
+
+				// Childpanels call parent->GetCanvas() until they get to 
+				// this top level function.
+				virtual Controls::Canvas* GetCanvas(){ return this; }
+
+				virtual void SetScale( float f );
+				virtual float Scale() const { return m_fScale; }
+
+				virtual void OnBoundsChanged( Gwen::Rect oldBounds );
+
+				//
+				// Call this to delete the canvas, and its children
+				// in the right order.
+				//
+				virtual void Release();
+
+				// Delayed deletes
+				virtual void AddDelayedDelete( Controls::Base* pControl );
+				virtual void ProcessDelayedDeletes();
+
+				Controls::Base*	FirstTab;
+				Controls::Base*	NextTab;
+
+				// Input
+				virtual bool InputMouseMoved( int x, int y, int deltaX, int deltaY );
+				virtual bool InputMouseButton( int iButton, bool bDown );
+				virtual bool InputKey( int iKey, bool bDown );
+				virtual bool InputCharacter( Gwen::UnicodeChar chr );
+				virtual bool InputMouseWheel( int val );
+
+				// Background
+				virtual void SetBackgroundColor( const Gwen::Color& color ){ m_BackgroundColor = color; }
+				virtual void SetDrawBackground( bool bShouldDraw ){ m_bDrawBackground = bShouldDraw; }
+
+			private:
+
+				bool	m_bNeedsRedraw;
+				bool	m_bAnyDelete;
+				float	m_fScale;
+
+				Controls::Base::List	m_DeleteList;
+				std::set< Controls::Base* > m_DeleteSet;
+				friend class Controls::Base;
+				void PreDelete( Controls::Base * );
+
+				bool			m_bDrawBackground;
+				Gwen::Color		m_BackgroundColor;
+
+
+		};
+	}
+}
+#endif