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/Slider.cpp

@@ -0,0 +1,104 @@
+/*
+	GWEN
+	Copyright (c) 2010 Facepunch Studios
+	See license in Gwen.h
+*/
+
+
+#include <math.h>
+#include "Gwen/Controls/Slider.h"
+
+using namespace Gwen;
+using namespace Gwen::Controls;
+using namespace Gwen::ControlsInternal;
+
+GWEN_CONTROL_CONSTRUCTOR( SliderBar )
+{
+	SetTarget( this );
+	RestrictToParent( true );
+}
+
+void SliderBar::Render( Skin::Base* skin )
+{
+	skin->DrawButton( this, m_bDepressed, IsHovered() );
+}
+
+
+Slider::Slider( Controls::Base* pParent ) : BaseClass( pParent )
+{
+	SetBounds( Gwen::Rect( 0, 0, 32, 128) );
+
+	m_SliderBar = new SliderBar( this );
+	m_SliderBar->onDragged.Add( this, &Slider::OnMoved );
+
+	m_fMin = 0.0f;
+	m_fMax = 1.0f;
+
+	m_bClampToNotches = false;
+	m_iNumNotches = 5;
+	m_fValue = 0.0f;
+
+	SetTabable( true );
+
+}
+
+void Slider::OnMoved( Controls::Base * /*control*/ )
+{
+	SetValueInternal( CalculateValue() );
+}
+
+void Slider::Layout( Skin::Base* skin )
+{
+	BaseClass::Layout( skin );
+}
+
+float Slider::CalculateValue()
+{
+	return 0;
+}
+
+void Slider::SetValue( float val, bool /*forceUpdate*/ ) 
+{
+	if (val < m_fMin) val = m_fMin;
+	if (val > m_fMax) val = m_fMax;
+	// Normalize Value
+	val = (val - m_fMin) / (m_fMax - m_fMin);
+	SetValueInternal( val );
+	Redraw();
+}
+
+void Slider::SetValueInternal( float val )
+{
+	if ( m_bClampToNotches )
+	{
+		val = floor( (val * (float)m_iNumNotches) + 0.5f );
+		val /= (float) m_iNumNotches;
+	}
+
+	if ( m_fValue != val )
+	{
+		m_fValue = val;
+		onValueChanged.Call( this );
+	}
+
+	UpdateBarFromValue();	
+}
+
+float Slider::GetValue()
+{
+	return m_fMin + (m_fValue * (m_fMax - m_fMin));
+}
+
+void Slider::SetRange( float fMin, float fMax )
+{
+	m_fMin = fMin;
+	m_fMax = fMax;
+}
+
+void Slider::RenderFocus( Gwen::Skin::Base* skin )
+{
+	if ( Gwen::KeyboardFocus != this ) return;
+	if ( !IsTabable() ) return;
+
+	skin->DrawKeyboardHighlight( this, GetRenderBounds(), 0 );
+}