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engine/ivideomode.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $Workfile:     $
+// $Date:         $
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef IVIDEOMODE_H
+#define IVIDEOMODE_H
+
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include "vmodes.h"
+#include "vtf/vtf.h"
+
+struct MovieInfo_t;
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+abstract_class IVideoMode
+{
+public:	
+	virtual					~IVideoMode() {}
+	virtual	bool			Init( ) = 0;
+	virtual void			Shutdown( void ) = 0;
+
+	// Shows the start-up graphics based on the mod 
+	// (Filesystem path for the mod must be set up first)
+	virtual void			DrawStartupGraphic() = 0;
+
+	// Creates the game window, plays the startup movie, starts up the material system
+	virtual bool			CreateGameWindow( int nWidth, int nHeight, bool bWindowed ) = 0;
+
+	// Sets the game window in editor mode
+	virtual void			SetGameWindow( void *hWnd ) = 0;
+
+	// Sets the video mode, and re-sizes the window
+	virtual bool			SetMode( int nWidth, int nHeight, bool bWindowed ) = 0;
+
+	// Returns the fullscreen modes for the adapter the game was started on
+	virtual int				GetModeCount( void ) = 0;
+	virtual struct vmode_s	*GetMode( int num ) = 0;
+
+	// Purpose: This is called in response to a WM_MOVE message
+	// or whatever the equivalent that would be under linux
+	virtual void			UpdateWindowPosition( void ) = 0;
+
+	// Alt-tab handling
+	virtual void			RestoreVideo( void ) = 0;
+	virtual void			ReleaseVideo( void ) = 0;
+
+	virtual void			DrawNullBackground( void *hdc, int w, int h ) = 0;
+	virtual void			InvalidateWindow() = 0;
+
+	// Returns the video mode width + height. In the case of windowed mode,
+	// it returns the width and height of the drawable region of the window.
+	// (it doesn't include the window borders)
+	virtual int				GetModeWidth() const = 0;
+	virtual int				GetModeHeight() const = 0;
+	virtual	bool			IsWindowedMode() const = 0;
+
+	// Returns the video mode width + height for a single stereo display.
+	// if the game isn't running in side by side stereo, this is the same
+	// as GetModeWidth and GetModeHeight
+	virtual int				GetModeStereoWidth() const = 0;
+	virtual int				GetModeStereoHeight() const = 0;
+
+	// Returns the size of full screen UI. This might be wider than a single
+	// eye on displays like the Oculus Rift where a single eye is very narrow.
+	// if the game isn't running in side by side stereo, this is the same
+	// as GetModeWidth and GetModeHeight
+	virtual int				GetModeUIWidth() const = 0;
+	virtual int				GetModeUIHeight() const = 0;
+
+	// Returns the subrect to draw the client view into.
+	// Coordinates are measured relative to the drawable region of the window
+	virtual const vrect_t &	GetClientViewRect( ) const = 0;
+	virtual void			SetClientViewRect( const vrect_t &viewRect ) = 0;
+
+	// Lazily recomputes client view rect
+	virtual void			MarkClientViewRectDirty() = 0;
+
+	virtual void			TakeSnapshotTGA( const char *pFileName ) = 0;
+	virtual void			TakeSnapshotTGARect( const char *pFilename, int x, int y, int w, int h, int resampleWidth, int resampleHeight, bool bPFM = false, CubeMapFaceIndex_t faceIndex = CUBEMAP_FACE_RIGHT ) = 0;
+	virtual void			WriteMovieFrame( const MovieInfo_t& info ) = 0;
+
+	// Takes snapshots
+	virtual void			TakeSnapshotJPEG( const char *pFileName, int quality ) = 0;
+	virtual bool			TakeSnapshotJPEGToBuffer( CUtlBuffer& buf, int quality ) = 0;
+
+	virtual void			ReadScreenPixels( int x, int y, int w, int h, void *pBuffer, ImageFormat format ) = 0;
+};
+
+
+//-----------------------------------------------------------------------------
+// Utilities for virtual screen coordinates
+//-----------------------------------------------------------------------------
+#define XRES(x)	( x  * ( ( float )videomode->GetModeStereoWidth() / 640.0 ) )
+#define YRES(y)	( y  * ( ( float )videomode->GetModeStereoHeight() / 480.0 ) )
+
+
+//-----------------------------------------------------------------------------
+// Singleton accessor 
+//-----------------------------------------------------------------------------
+extern IVideoMode *videomode;
+
+
+//-----------------------------------------------------------------------------
+// Class factory 
+//-----------------------------------------------------------------------------
+void VideoMode_Create();
+void VideoMode_Destroy();
+
+
+#endif // IVIDEOMODE_H