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public/dme_controls/ChannelGraphPanel.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================//
+
+#ifndef CHANNELGRAPHPANEL_H
+#define CHANNELGRAPHPANEL_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include <vgui_controls/Panel.h>
+#include <vgui_controls/Frame.h>
+#include "utllinkedlist.h"
+#include "utlvector.h"
+#include "movieobjects/dmechannel.h"
+#include "datamodel/dmehandle.h"
+
+namespace vgui
+{
+
+typedef DmeTime_t (*TimeAccessor_t)();
+
+//-----------------------------------------------------------------------------
+// Purpose: Holds and displays a chart of dmechannel data
+//-----------------------------------------------------------------------------
+class CChannelGraphPanel : public Panel
+{
+	DECLARE_CLASS_SIMPLE( CChannelGraphPanel, Panel );
+
+public:
+	CChannelGraphPanel( Panel *parent, const char *name );
+
+	void SetChannel( CDmeChannel *pChannel );
+
+	// input messages
+	virtual void OnCursorMoved( int mx, int my );
+	virtual void OnMousePressed( MouseCode code );
+	virtual void OnMouseReleased( MouseCode code );
+	virtual void OnMouseWheeled( int delta );
+	virtual void OnSizeChanged( int newWide, int newTall );	// called after the size of a panel has been changed
+
+protected:
+	virtual void Paint();
+	virtual void PerformLayout();
+	virtual void ApplySchemeSettings( IScheme *pScheme );
+
+	int TimeToPixel( DmeTime_t time );
+	int ValueToPixel( float flValue );
+
+private:
+	CDmeHandle< CDmeChannel > m_hChannel;
+	HFont m_font;
+	TimeAccessor_t m_timeFunc;
+	DmeTime_t m_graphMinTime, m_graphMaxTime;
+	float m_graphMinValue, m_graphMaxValue;
+	int m_nMouseStartX, m_nMouseStartY;
+	int m_nMouseLastX, m_nMouseLastY;
+	int m_nTextBorder;
+	int m_nGraphOriginX;
+	int m_nGraphOriginY;
+	float m_flTimeToPixel;
+	float m_flValueToPixel;
+};
+
+
+//-----------------------------------------------------------------------------
+// CChannelGraphFrame
+//-----------------------------------------------------------------------------
+class CChannelGraphFrame : public Frame
+{
+	DECLARE_CLASS_SIMPLE( CChannelGraphFrame, Frame );
+
+public:
+	CChannelGraphFrame( Panel *parent, const char *pTitle );
+
+	void SetChannel( CDmeChannel *pChannel );
+
+	virtual void OnCommand( const char *cmd );
+	virtual void PerformLayout();
+
+protected:
+	CChannelGraphPanel *m_pChannelGraph;
+};
+
+} // namespace vgui
+
+#endif // CHANNELGRAPHPANEL_H