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movieobjects/dmemouseinput.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================
+
+#include "movieobjects/dmemouseinput.h"
+#include "movieobjects_interfaces.h"
+#include "datamodel/dmelementfactoryhelper.h"
+
+#include "vgui/iinput.h"
+#include "vgui/ipanel.h"
+#include "tier3/tier3.h"
+
+#include "tier0/dbg.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+
+//-----------------------------------------------------------------------------
+// Expose this class to the scene database 
+//-----------------------------------------------------------------------------
+IMPLEMENT_ELEMENT_FACTORY( DmeMouseInput, CDmeMouseInput );
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CDmeMouseInput::OnConstruction()
+{
+	m_x.Init( this, "x" );
+	m_y.Init( this, "y" );
+
+	m_xOrigin = 0.0f;
+	m_yOrigin = 0.0f;
+}
+
+void CDmeMouseInput::OnDestruction()
+{
+}
+
+//-----------------------------------------------------------------------------
+// IsDirty - ie needs to operate
+//-----------------------------------------------------------------------------
+bool CDmeMouseInput::IsDirty()
+{
+	float flX, flY;
+	GetNormalizedCursorPos( flX, flY );
+	flX -= m_xOrigin;
+	flY -= m_yOrigin;
+
+	return ( flX != GetValue< float >( "x" ) ) || ( flY != GetValue< float >( "y" ) );
+}
+
+void CDmeMouseInput::Operate()
+{
+	float flX, flY;
+	GetNormalizedCursorPos( flX, flY );
+
+	SetValue( "x", flX - m_xOrigin );
+	SetValue( "y", flY - m_yOrigin );
+
+//	Msg( "CDmeMouseInput::Operate() at <%f, %f>\n", flX, flY );
+}
+
+void CDmeMouseInput::GetInputAttributes( CUtlVector< CDmAttribute * > &attrs )
+{
+}
+
+void CDmeMouseInput::GetOutputAttributes( CUtlVector< CDmAttribute * > &attrs )
+{
+	attrs.AddToTail( GetAttribute( "x" ) );
+	attrs.AddToTail( GetAttribute( "y" ) );
+}
+
+void CDmeMouseInput::ResetOrigin( float dx, float dy )
+{
+	GetNormalizedCursorPos( m_xOrigin, m_yOrigin );
+	m_xOrigin += dx;
+	m_yOrigin += dy;
+}
+
+void CDmeMouseInput::GetNormalizedCursorPos( float &flX, float &flY )
+{
+	int x, y;
+	g_pVGuiInput->GetCursorPos( x, y );
+
+	vgui::VPANEL vpanel = g_pVGuiInput->GetFocus();
+	if ( !vpanel )
+	{
+		flX = flY = 0.0f;
+		return;
+	}
+
+	int x0, y0;
+	g_pVGuiPanel->GetPos( vpanel, x0, y0 );
+
+	int w, h;
+	g_pVGuiPanel->GetSize( vpanel, w, h );
+
+	flX = ( x - x0 ) / float(w);
+	flY = ( y - y0 ) / float(h);
+}