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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
	11	#ifndef __GTKDCH__
	12	#define __GTKDCH__
	13
	14	#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
	15	#pragma interface
	16	#endif
	17
	18	//-----------------------------------------------------------------------------
	19	// classes
	20	//-----------------------------------------------------------------------------
	21
	22	class wxDC;
	23
	24	//-----------------------------------------------------------------------------
	25	// constants
	26	//-----------------------------------------------------------------------------
	27
	28	#ifndef MM_TEXT
	29	#define MM_TEXT 0
	30	#define MM_ISOTROPIC 1
	31	#define MM_ANISOTROPIC 2
	32	#define MM_LOMETRIC 3
	33	#define MM_HIMETRIC 4
	34	#define MM_TWIPS 5
	35	#define MM_POINTS 6
	36	#define MM_METRIC 7
	37	#endif
	38
	39	//-----------------------------------------------------------------------------
	40	// wxDC
	41	//-----------------------------------------------------------------------------
	42
	43	class wxDC : public wxDCBase
	44	{
	45	public:
	46	wxDC();
	47	~wxDC() { }
	48
	49	void SetColourMap( const wxPalette& palette ) { SetPalette(palette); };
	50
	51	// Resolution in pixels per logical inch
	52	virtual wxSize GetPPI() const;
	53
	54	virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return true; }
	55	virtual void EndDoc() { }
	56	virtual void StartPage() { }
	57	virtual void EndPage() { }
	58
	59	virtual void SetMapMode( int mode );
	60	virtual void SetUserScale( double x, double y );
	61	virtual void SetLogicalScale( double x, double y );
	62	virtual void SetLogicalOrigin( wxCoord x, wxCoord y );
	63	virtual void SetDeviceOrigin( wxCoord x, wxCoord y );
	64
	65	virtual void SetAxisOrientation( bool xLeftRight, bool yBottomUp );
	66
	67	// implementation
	68	// --------------
	69
	70	virtual void ComputeScaleAndOrigin();
	71
	72	wxCoord XDEV2LOG(wxCoord x) const
	73	{
	74	wxCoord new_x = x - m_deviceOriginX;
	75	if (new_x > 0)
	76	return (wxCoord)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
	77	else
	78	return (wxCoord)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
	79	}
	80	wxCoord XDEV2LOGREL(wxCoord x) const
	81	{
	82	if (x > 0)
	83	return (wxCoord)((double)(x) / m_scaleX + 0.5);
	84	else
	85	return (wxCoord)((double)(x) / m_scaleX - 0.5);
	86	}
	87	wxCoord YDEV2LOG(wxCoord y) const
	88	{
	89	wxCoord new_y = y - m_deviceOriginY;
	90	if (new_y > 0)
	91	return (wxCoord)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
	92	else
	93	return (wxCoord)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
	94	}
	95	wxCoord YDEV2LOGREL(wxCoord y) const
	96	{
	97	if (y > 0)
	98	return (wxCoord)((double)(y) / m_scaleY + 0.5);
	99	else
	100	return (wxCoord)((double)(y) / m_scaleY - 0.5);
	101	}
	102	wxCoord XLOG2DEV(wxCoord x) const
	103	{
	104	wxCoord new_x = x - m_logicalOriginX;
	105	if (new_x > 0)
	106	return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
	107	else
	108	return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
	109	}
	110	wxCoord XLOG2DEVREL(wxCoord x) const
	111	{
	112	if (x > 0)
	113	return (wxCoord)((double)(x) * m_scaleX + 0.5);
	114	else
	115	return (wxCoord)((double)(x) * m_scaleX - 0.5);
	116	}
	117	wxCoord YLOG2DEV(wxCoord y) const
	118	{
	119	wxCoord new_y = y - m_logicalOriginY;
	120	if (new_y > 0)
	121	return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
	122	else
	123	return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
	124	}
	125	wxCoord YLOG2DEVREL(wxCoord y) const
	126	{
	127	if (y > 0)
	128	return (wxCoord)((double)(y) * m_scaleY + 0.5);
	129	else
	130	return (wxCoord)((double)(y) * m_scaleY - 0.5);
	131	}
	132
	133	protected:
	134	// base class pure virtuals implemented here
	135	virtual void DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
	136	virtual void DoGetSizeMM(int* width, int* height) const;
	137
	138	public:
	139	// GTK-specific member variables
	140
	141	// not sure what for, but what is a mm on a screen you don't know the size
	142	// of?
	143	double m_mm_to_pix_x,
	144	m_mm_to_pix_y;
	145
	146	bool m_needComputeScaleX,
	147	m_needComputeScaleY; // not yet used
	148
	149
	150	private:
	151	DECLARE_ABSTRACT_CLASS(wxDC)
	152	};
	153
	154	// this must be defined when wxDC::Blit() honours the DC origian and needed to
	155	// allow wxUniv code in univ/winuniv.cpp to work with versions of wxGTK
	156	// 2.3.[23]
	157	#ifndef wxHAS_WORKING_GTK_DC_BLIT
	158	#define wxHAS_WORKING_GTK_DC_BLIT
	159	#endif
	160
	161	#endif // __GTKDCH__