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Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: 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	~wxDC() { }
	43
	44	void SetColourMap( const wxPalette& palette ) { SetPalette(palette); };
	45
	46	// Resolution in pixels per logical inch
	47	virtual wxSize GetPPI() const;
	48
	49	virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return true; }
	50	virtual void EndDoc() { }
	51	virtual void StartPage() { }
	52	virtual void EndPage() { }
	53
	54	virtual void SetMapMode( int mode );
	55	virtual void SetUserScale( double x, double y );
	56	virtual void SetLogicalScale( double x, double y );
	57	virtual void SetLogicalOrigin( wxCoord x, wxCoord y );
	58	virtual void SetDeviceOrigin( wxCoord x, wxCoord y );
	59
	60	virtual void SetAxisOrientation( bool xLeftRight, bool yBottomUp );
	61
	62	// implementation
	63	// --------------
	64
	65	virtual void ComputeScaleAndOrigin();
	66
	67	wxCoord XDEV2LOG(wxCoord x) const
	68	{
	69	wxCoord new_x = x - m_deviceOriginX;
	70	if (new_x > 0)
	71	return (wxCoord)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
	72	else
	73	return (wxCoord)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
	74	}
	75	wxCoord XDEV2LOGREL(wxCoord x) const
	76	{
	77	if (x > 0)
	78	return (wxCoord)((double)(x) / m_scaleX + 0.5);
	79	else
	80	return (wxCoord)((double)(x) / m_scaleX - 0.5);
	81	}
	82	wxCoord YDEV2LOG(wxCoord y) const
	83	{
	84	wxCoord new_y = y - m_deviceOriginY;
	85	if (new_y > 0)
	86	return (wxCoord)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
	87	else
	88	return (wxCoord)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
	89	}
	90	wxCoord YDEV2LOGREL(wxCoord y) const
	91	{
	92	if (y > 0)
	93	return (wxCoord)((double)(y) / m_scaleY + 0.5);
	94	else
	95	return (wxCoord)((double)(y) / m_scaleY - 0.5);
	96	}
	97	wxCoord XLOG2DEV(wxCoord x) const
	98	{
	99	wxCoord new_x = x - m_logicalOriginX;
	100	if (new_x > 0)
	101	return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
	102	else
	103	return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
	104	}
	105	wxCoord XLOG2DEVREL(wxCoord x) const
	106	{
	107	if (x > 0)
	108	return (wxCoord)((double)(x) * m_scaleX + 0.5);
	109	else
	110	return (wxCoord)((double)(x) * m_scaleX - 0.5);
	111	}
	112	wxCoord YLOG2DEV(wxCoord y) const
	113	{
	114	wxCoord new_y = y - m_logicalOriginY;
	115	if (new_y > 0)
	116	return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
	117	else
	118	return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
	119	}
	120	wxCoord YLOG2DEVREL(wxCoord y) const
	121	{
	122	if (y > 0)
	123	return (wxCoord)((double)(y) * m_scaleY + 0.5);
	124	else
	125	return (wxCoord)((double)(y) * m_scaleY - 0.5);
	126	}
	127
	128	protected:
	129	// base class pure virtuals implemented here
	130	virtual void DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
	131	virtual void DoGetSizeMM(int* width, int* height) const;
	132
	133	public:
	134	// GTK-specific member variables
	135
	136	// not sure what for, but what is a mm on a screen you don't know the size
	137	// of?
	138	double m_mm_to_pix_x,
	139	m_mm_to_pix_y;
	140
	141	bool m_needComputeScaleX,
	142	m_needComputeScaleY; // not yet used
	143
	144
	145	private:
	146	DECLARE_ABSTRACT_CLASS(wxDC)
	147	};
	148
	149	// this must be defined when wxDC::Blit() honours the DC origian and needed to
	150	// allow wxUniv code in univ/winuniv.cpp to work with versions of wxGTK
	151	// 2.3.[23]
	152	#ifndef wxHAS_WORKING_GTK_DC_BLIT
	153	#define wxHAS_WORKING_GTK_DC_BLIT
	154	#endif
	155
	156	#endif // __GTKDCH__