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Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: dc.h
	3	// Purpose: wxDC class
	4	// Author: Julian Smart
	5	// Modified by:
	6	// Created: 17/09/98
	7	// RCS-ID: $Id$
	8	// Copyright: (c) Julian Smart
	9	// Licence: wxWindows licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	#ifndef _WX_DC_H_
	13	#define _WX_DC_H_
	14
	15	#if defined(__GNUG__) && !defined(__APPLE__)
	16	#pragma interface "dc.h"
	17	#endif
	18
	19	#include "wx/pen.h"
	20	#include "wx/brush.h"
	21	#include "wx/icon.h"
	22	#include "wx/font.h"
	23	#include "wx/gdicmn.h"
	24
	25	//-----------------------------------------------------------------------------
	26	// constants
	27	//-----------------------------------------------------------------------------
	28
	29	#ifndef MM_TEXT
	30	#define MM_TEXT 0
	31	#define MM_ISOTROPIC 1
	32	#define MM_ANISOTROPIC 2
	33	#define MM_LOMETRIC 3
	34	#define MM_HIMETRIC 4
	35	#define MM_TWIPS 5
	36	#define MM_POINTS 6
	37	#define MM_METRIC 7
	38	#endif
	39
	40	//-----------------------------------------------------------------------------
	41	// wxDC
	42	//-----------------------------------------------------------------------------
	43
	44	class WXDLLEXPORT wxDC : public wxDCBase
	45	{
	46	DECLARE_DYNAMIC_CLASS(wxDC)
	47
	48	public:
	49	wxDC();
	50	~wxDC() { }
	51
	52	// implement base class pure virtuals
	53	// ----------------------------------
	54
	55	virtual void DestroyClippingRegion();
	56
	57	virtual wxSize GetPPI() const;
	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	virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
	65
	66	protected:
	67	virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
	68	virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
	69	bool useMask = FALSE);
	70
	71	virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
	72	wxCoord width, wxCoord height);
	73	virtual void DoGetSize(int width, int height) const;
	74	virtual void DoGetSizeMM(int* width, int* height) const;
	75
	76	public:
	77	void ComputeScaleAndOrigin();
	78
	79	wxCoord XDEV2LOG(wxCoord x) const
	80	{
	81	wxCoord new_x = x - m_deviceOriginX;
	82	if (new_x > 0)
	83	return (wxCoord)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
	84	else
	85	return (wxCoord)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
	86	}
	87	wxCoord XDEV2LOGREL(wxCoord x) const
	88	{
	89	if (x > 0)
	90	return (wxCoord)((double)(x) / m_scaleX + 0.5);
	91	else
	92	return (wxCoord)((double)(x) / m_scaleX - 0.5);
	93	}
	94	wxCoord YDEV2LOG(wxCoord y) const
	95	{
	96	wxCoord new_y = y - m_deviceOriginY;
	97	if (new_y > 0)
	98	return (wxCoord)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
	99	else
	100	return (wxCoord)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
	101	}
	102	wxCoord YDEV2LOGREL(wxCoord y) const
	103	{
	104	if (y > 0)
	105	return (wxCoord)((double)(y) / m_scaleY + 0.5);
	106	else
	107	return (wxCoord)((double)(y) / m_scaleY - 0.5);
	108	}
	109	wxCoord XLOG2DEV(wxCoord x) const
	110	{
	111	wxCoord new_x = x - m_logicalOriginX;
	112	if (new_x > 0)
	113	return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
	114	else
	115	return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
	116	}
	117	// Without device translation, for backing pixmap purposes
	118	wxCoord XLOG2DEV_2(wxCoord x) const
	119	{
	120	wxCoord new_x = x - m_logicalOriginX;
	121	if (new_x > 0)
	122	return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX;
	123	else
	124	return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX;
	125	}
	126	wxCoord XLOG2DEVREL(wxCoord x) const
	127	{
	128	if (x > 0)
	129	return (wxCoord)((double)(x) * m_scaleX + 0.5);
	130	else
	131	return (wxCoord)((double)(x) * m_scaleX - 0.5);
	132	}
	133	wxCoord YLOG2DEV(wxCoord y) const
	134	{
	135	wxCoord new_y = y - m_logicalOriginY;
	136	if (new_y > 0)
	137	return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
	138	else
	139	return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
	140	}
	141	// Without device translation, for backing pixmap purposes
	142	wxCoord YLOG2DEV_2(wxCoord y) const
	143	{
	144	wxCoord new_y = y - m_logicalOriginY;
	145	if (new_y > 0)
	146	return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY;
	147	else
	148	return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY;
	149	}
	150	wxCoord YLOG2DEVREL(wxCoord y) const
	151	{
	152	if (y > 0)
	153	return (wxCoord)((double)(y) * m_scaleY + 0.5);
	154	else
	155	return (wxCoord)((double)(y) * m_scaleY - 0.5);
	156	}
	157
	158	public:
	159	// not sure what for, but what is a mm on a screen you don't know the size of?
	160	double m_mm_to_pix_x,m_mm_to_pix_y;
	161
	162	// recompute scale?
	163	bool m_needComputeScaleX, m_needComputeScaleY;
	164
	165	};
	166
	167	#endif
	168	// _WX_DC_H_