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