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Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: wx/gtk1/dc.h
	3	// Purpose:
	4	// Author: Robert Roebling
	5	// Id: $Id$
	6	// Copyright: (c) 1998 Robert Roebling
	7	// Licence: wxWindows licence
	8	/////////////////////////////////////////////////////////////////////////////
	9
	10	#ifndef __GTKDCH__
	11	#define __GTKDCH__
	12
	13	//-----------------------------------------------------------------------------
	14	// classes
	15	//-----------------------------------------------------------------------------
	16
	17	class WXDLLIMPEXP_CORE wxDC;
	18
	19	//-----------------------------------------------------------------------------
	20	// constants
	21	//-----------------------------------------------------------------------------
	22
	23	#ifndef MM_TEXT
	24	#define MM_TEXT 0
	25	#define MM_ISOTROPIC 1
	26	#define MM_ANISOTROPIC 2
	27	#define MM_LOMETRIC 3
	28	#define MM_HIMETRIC 4
	29	#define MM_TWIPS 5
	30	#define MM_POINTS 6
	31	#define MM_METRIC 7
	32	#endif
	33
	34	//-----------------------------------------------------------------------------
	35	// wxDC
	36	//-----------------------------------------------------------------------------
	37
	38	class WXDLLIMPEXP_CORE wxDC : public wxDCBase
	39	{
	40	public:
	41	wxDC();
	42	virtual ~wxDC() { }
	43
	44	#if wxUSE_PALETTE
	45	void SetColourMap( const wxPalette& palette ) { SetPalette(palette); };
	46	#endif // wxUSE_PALETTE
	47
	48	// Resolution in pixels per logical inch
	49	virtual wxSize GetPPI() const;
	50
	51	virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return true; }
	52	virtual void EndDoc() { }
	53	virtual void StartPage() { }
	54	virtual void EndPage() { }
	55
	56	virtual void SetMapMode( int mode );
	57	virtual void SetUserScale( double x, double y );
	58	virtual void SetLogicalScale( double x, double y );
	59	virtual void SetLogicalOrigin( wxCoord x, wxCoord y );
	60	virtual void SetDeviceOrigin( wxCoord x, wxCoord y );
	61
	62	virtual void SetAxisOrientation( bool xLeftRight, bool yBottomUp );
	63
	64	// implementation
	65	// --------------
	66
	67	virtual void ComputeScaleAndOrigin();
	68
	69	virtual GdkWindow* GetGDKWindow() const { return NULL; }
	70
	71	wxCoord XDEV2LOG(wxCoord x) const
	72	{
	73	return wxRound((double)(x - m_deviceOriginX) / m_scaleX) * m_signX + m_logicalOriginX;
	74	}
	75	wxCoord XDEV2LOGREL(wxCoord x) const
	76	{
	77	return wxRound((double)(x) / m_scaleX);
	78	}
	79	wxCoord YDEV2LOG(wxCoord y) const
	80	{
	81	return wxRound((double)(y - m_deviceOriginY) / m_scaleY) * m_signY + m_logicalOriginY;
	82	}
	83	wxCoord YDEV2LOGREL(wxCoord y) const
	84	{
	85	return wxRound((double)(y) / m_scaleY);
	86	}
	87	wxCoord XLOG2DEV(wxCoord x) const
	88	{
	89	return wxRound((double)(x - m_logicalOriginX) * m_scaleX) * m_signX + m_deviceOriginX;
	90	}
	91	wxCoord XLOG2DEVREL(wxCoord x) const
	92	{
	93	return wxRound((double)(x) * m_scaleX);
	94	}
	95	wxCoord YLOG2DEV(wxCoord y) const
	96	{
	97	return wxRound((double)(y - m_logicalOriginY) * m_scaleY) * m_signY + m_deviceOriginY;
	98	}
	99	wxCoord YLOG2DEVREL(wxCoord y) const
	100	{
	101	return wxRound((double)(y) * m_scaleY);
	102	}
	103
	104	protected:
	105	// base class pure virtuals implemented here
	106	virtual void DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
	107	virtual void DoGetSizeMM(int* width, int* height) const;
	108
	109	public:
	110	// GTK-specific member variables
	111
	112	// not sure what for, but what is a mm on a screen you don't know the size
	113	// of?
	114	double m_mm_to_pix_x,
	115	m_mm_to_pix_y;
	116
	117	bool m_needComputeScaleX,
	118	m_needComputeScaleY; // not yet used
	119
	120
	121	private:
	122	DECLARE_ABSTRACT_CLASS(wxDC)
	123	};
	124
	125	// this must be defined when wxDC::Blit() honours the DC origian and needed to
	126	// allow wxUniv code in univ/winuniv.cpp to work with versions of wxGTK
	127	// 2.3.[23]
	128	#ifndef wxHAS_WORKING_GTK_DC_BLIT
	129	#define wxHAS_WORKING_GTK_DC_BLIT
	130	#endif
	131
	132	#endif // __GTKDCH__