[wxWidgets.git] / include / wx / msw / dc.h

/////////////////////////////////////////////////////////////////////////////
// Name:        dc.h
// Purpose:     wxDC class
// Author:      Julian Smart
// Modified by:
// Created:     01/02/97
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart and Markus Holzem
// Licence:   	wxWindows license
/////////////////////////////////////////////////////////////////////////////

#ifndef __DCH__
#define __DCH__

#ifdef __GNUG__
#pragma interface "dc.h"
#endif

#include "wx/pen.h"
#include "wx/brush.h"
#include "wx/icon.h"
#include "wx/font.h"
#include "wx/gdicmn.h"

class WXDLLEXPORT wxDC: public wxObject
{
  DECLARE_ABSTRACT_CLASS(wxDC)
 protected:
public:
  wxDC(void);
  ~wxDC(void);

  inline void wxDC::BeginDrawing(void) {}
  inline void wxDC::EndDrawing(void) {}

  virtual void FloodFill(long x1, long y1, wxColour *col, int style=wxFLOOD_SURFACE) ;
  virtual bool GetPixel(long x1, long y1, wxColour *col) const ;

  virtual void DrawLine(long x1, long y1, long x2, long y2);
  virtual void CrossHair(long x, long y) ;
  virtual void DrawArc(long x1,long y1,long x2,long y2,double xc, double yc);
  virtual void DrawEllipticArc (long x, long y, long w, long h, double sa, double ea);
  virtual void DrawPoint(long x, long y);

  virtual void DrawLines(int n, wxPoint points[], long xoffset = 0, long yoffset = 0);

  virtual void DrawPolygon(int n, wxPoint points[], long xoffset = 0, long yoffset = 0, int fillStyle=wxODDEVEN_RULE);

  virtual void DrawRectangle(long x, long y, long width, long height);
  virtual void DrawRoundedRectangle(long x, long y, long width, long height, double radius = 20.0);
  virtual void DrawEllipse(long x, long y, long width, long height);

  virtual void DrawIcon(const wxIcon& icon, long x, long y);

  virtual void Clear(void);
  virtual void SetFont(const wxFont& font);
  virtual void SetPen(const wxPen& pen);
  virtual void SetBrush(const wxBrush& brush);
  virtual void SetLogicalFunction(int function);
  virtual void SetBackground(const wxBrush& brush);
  virtual void SetBackgroundMode(int mode);
  virtual void SetClippingRegion(long x, long y, long width, long height);
  virtual void SetPalette(const wxPalette& palette);
#if WXWIN_COMPATIBILITY
  virtual inline void SetColourMap(const wxPalette& palette) { SetPalette(palette); };
#endif
  virtual void DestroyClippingRegion(void);
  virtual void DrawText(const wxString& text, long x, long y, bool use16bit = FALSE);

  virtual long GetCharHeight(void) const;
  virtual long GetCharWidth(void) const;
  virtual void GetTextExtent(const wxString& string, long *x, long *y,
                     long *descent = NULL, long *externalLeading = NULL,
                     wxFont *theFont = NULL, bool use16bit = FALSE) const;
#if WXWIN_COMPATIBILITY
  void GetTextExtent(const wxString& string, float *x, float *y,
                     float *descent = NULL, float *externalLeading = NULL,
                     wxFont *theFont = NULL, bool use16bit = FALSE) const ;
#endif

  // Size in device units
  virtual void GetSize(int* width, int* height) const;
  inline wxSize GetSize(void) const { int w, h; GetSize(&w, &h); return wxSize(w, h); }

  // Size in mm
  virtual void GetSizeMM(long* width, long* height) const ;

  // Compatibility
#if WXWIN_COMPATIBILITY
  inline void GetSize(float* width, float* height) const { int w, h; GetSize(& w, & h); *width = w; *height = h; }
  inline void GetSizeMM(float *width, float *height) const { long w, h; GetSizeMM(& w, & h); *width = (float) w; *height = (float) h; }
#endif

  virtual bool StartDoc(const wxString& message);
  virtual void EndDoc(void);
  virtual void StartPage(void);
  virtual void EndPage(void);
  virtual void SetMapMode(int mode);
  virtual void SetUserScale(double x, double y);
  virtual void SetSystemScale(double x, double y);
  virtual void SetLogicalOrigin(long x, long y);
  virtual void SetDeviceOrigin(long x, long y);

  // This group of functions does actual conversion
  // of the input, as you'd expect.

  long DeviceToLogicalX(long x) const;
  long DeviceToLogicalY(long y) const;
  long DeviceToLogicalXRel(long x) const;
  long DeviceToLogicalYRel(long y) const;
  long LogicalToDeviceX(long x) const;
  long LogicalToDeviceY(long y) const;
  long LogicalToDeviceXRel(long x) const;
  long LogicalToDeviceYRel(long y) const;

  // This group of functions may not do any conversion
  // if m_scaleGDI is TRUE, since the HDC does the
  // conversion automatically.
  // m_scaleGDI NOW OBSOLETE
  long ImplDeviceToLogicalX(long x) const;
  long ImplDeviceToLogicalY(long y) const;
  long ImplDeviceToLogicalXRel(long x) const;
  long ImplDeviceToLogicalYRel(long y) const;
  long ImplLogicalToDeviceX(long x) const;
  long ImplLogicalToDeviceY(long y) const;
  long ImplLogicalToDeviceXRel(long x) const;
  long ImplLogicalToDeviceYRel(long y) const;

  virtual bool Blit(long xdest, long ydest, long width, long height,
            wxDC *source, long xsrc, long ysrc, int rop = wxCOPY, bool useMask = FALSE);

  virtual bool CanDrawBitmap(void) const;
  virtual bool CanGetTextExtent(void) const;

  //
  // This function is intended to improves drawing, by avoiding to
  // repeatly call ::SetPen/::SetBrush. If set to FALSE, these functions
  // aren't called when calling ::DrawLine(),...
  // Please note that this is YOUR responsability to use it, and do it
  // only when you KNOWN that pen/brush isn't changed between 2 calls to
  // DrawLine,... !!!
  // Note also that in X, we don't test m_autoSetting on brushes, because they
  // modify Foreground, as pens. So, convention is:
  //   - call your SetBrush(), THEN your SetPen, THEN AutoSetTools(FALSE)
  //   - call DrawLine,...
  // [mainly coded for Windows]
  inline virtual void AutoSetTools(bool auto_setting) { m_autoSetting = auto_setting ; }
  inline virtual void DrawPoint(wxPoint& point) { DrawPoint(point.x, point.y); }
  virtual void DrawLines(wxList *list, long xoffset = 0, long yoffset = 0);
  virtual void DrawPolygon(wxList *list, long xoffset = 0, long yoffset = 0, int fillStyle=wxODDEVEN_RULE);
#if USE_SPLINES
  // Splines
  // 3-point spline
  virtual void DrawSpline(long x1, long y1, long x2, long y2, long x3, long y3);
  // Any number of control points - a list of pointers to wxPoints
  virtual void DrawSpline(wxList *points);
  virtual void DrawSpline(int n, wxPoint points[]);
#endif
  virtual void SetTextForeground(const wxColour& colour);
  virtual void SetTextBackground(const wxColour& colour);
  inline virtual bool Ok(void) const {return m_ok;};
  inline virtual int  GetMapMode(void) const {return m_mappingMode;};

  inline virtual wxBrush *GetBackground(void) const { return (wxBrush*) &m_backgroundBrush ;}
  inline virtual wxBrush *GetBrush(void) const { return (wxBrush*) &m_brush ;}
  inline virtual wxFont  *GetFont(void) const { return (wxFont*) &m_font ;}
  inline virtual int      GetLogicalFunction(void) const { return m_logicalFunction ;}
  inline virtual wxPen   *GetPen(void) const { return (wxPen*) &m_pen ;}
  inline virtual wxColour&GetTextBackground(void) const { return (wxColour&) m_textBackgroundColour ;}
  inline virtual wxColour&GetTextForeground(void) const { return (wxColour&) m_textForegroundColour ;}

  virtual void SetLogicalScale(double x, double y);
  virtual inline  void GetUserScale(double* x, double *y) const { *x = m_userScaleX; *y = m_userScaleY; }
  virtual void CalcBoundingBox(long x, long y);
  // Get the final bounding box of the PostScript or Metafile picture.
  virtual inline long MinX(void) const { return m_minX; }
  virtual inline long MaxX(void) const { return m_maxX; }
  virtual inline long MinY(void) const { return m_minY; }
  virtual inline long MaxY(void) const { return m_maxY; }
  // Sometimes we need to override optimization, e.g.
  // if other software is drawing onto our surface and we
  // can't be sure of who's done what.
  virtual inline void SetOptimization(bool WXUNUSED(opt)) { }
  virtual inline bool GetOptimization(void) { return FALSE; }

  virtual void GetClippingBox(long *x,long *y,long *w,long *h) const ;

  virtual void SetRop(WXHDC cdc);
  virtual void DoClipping(WXHDC cdc);
  virtual void SelectOldObjects(WXHDC dc);

  inline wxWindow *GetWindow(void) const { return m_canvas; }
  inline void SetWindow(wxWindow *win) { m_canvas = win; }
  inline WXHDC GetHDC(void) const { return m_hDC; }
  inline void SetHDC(WXHDC dc, bool bOwnsDC = FALSE) { m_hDC = dc; m_bOwnsDC = bOwnsDC; }
  inline bool GetAutoSetting(void) const { return m_autoSetting; }

//  inline bool GetScaleGDI(void) const { return m_scaleGDI; }
//  inline void SetScaleGDI(bool flag) { m_scaleGDI = flag; }

protected:
  bool              m_colour;
  bool              m_ok;
  bool              m_clipping;
  bool              m_isInteractive;

  // Coordinate system variables
  long             m_logicalOriginX;
  long             m_logicalOriginY;

  long             m_deviceOriginX;
  long             m_deviceOriginY;

  double             m_logicalScaleX;
  double             m_logicalScaleY;

  double             m_userScaleX;
  double             m_userScaleY;

  int               m_mappingMode;

  long             m_minX;          // bounding box
  long             m_minY;
  long             m_maxX;
  long             m_maxY;

  int               m_logicalFunction;
  int               m_backgroundMode;

  wxPen             m_pen;
  wxBrush           m_brush;
  wxBrush           m_backgroundBrush;
  wxColour          m_textForegroundColour;
  wxColour          m_textBackgroundColour;
  wxFont            m_font;
  wxPalette         m_palette;
  bool              m_autoSetting ;
  int               m_clipX1;
  int               m_clipY1;
  int               m_clipX2;
  int               m_clipY2;
//  bool              m_dontDelete;
  int               m_windowExtX;
  int               m_windowExtY;
  double            m_systemScaleX;
  double            m_systemScaleY;

  wxWindow *        m_canvas;
  wxBitmap          m_selectedBitmap;
  wxString          m_filename;

  // TRUE => DeleteDC() in dtor, FALSE => only ReleaseDC() it
  bool              m_bOwnsDC;

  WXHDC             m_hDC;
  int               m_hDCCount;

  // Store all old GDI objects when do a SelectObject,
  // so we can select them back in (this unselecting user's
  // objects) so we can safely delete the DC.
  WXHBITMAP         m_oldBitmap;
  WXHPEN            m_oldPen;
  WXHBRUSH          m_oldBrush;
  WXHFONT           m_oldFont;
  WXHPALETTE        m_oldPalette;

  // Stores scaling, translation, rotation
//  wxTransformMatrix	m_transformMatrix;

  // Do we wish to scale GDI objects too, e.g. pen width?
//  bool				m_scaleGDI;
};

// Logical to device
// Absolute
#define XLOG2DEV(x) ImplLogicalToDeviceX(x)

#define YLOG2DEV(y) ImplLogicalToDeviceY(y)

// Relative
#define XLOG2DEVREL(x) ImplLogicalToDeviceXRel(x)
#define YLOG2DEVREL(y) ImplLogicalToDeviceYRel(y)

// Device to logical
// Absolute
#define XDEV2LOG(x) ImplDeviceToLogicalX(x)

#define YDEV2LOG(y) ImplDeviceToLogicalY(y)

// Relative
#define XDEV2LOGREL(x) ImplDeviceToLogicalXRel(x)
#define YDEV2LOGREL(y) ImplDeviceToLogicalYRel(y)

/*
 * Have the same macros as for XView but not for every operation:
 * just for calculating window/viewport extent (a better way of scaling).
 */

// Logical to device
// Absolute
#define MS_XLOG2DEV(x) LogicalToDevice(x)

#define MS_YLOG2DEV(y) LogicalToDevice(y)

// Relative
#define MS_XLOG2DEVREL(x) LogicalToDeviceXRel(x)
#define MS_YLOG2DEVREL(y) LogicalToDeviceYRel(y)

// Device to logical
// Absolute
#define MS_XDEV2LOG(x) DeviceToLogicalX(x)

#define MS_YDEV2LOG(y) DeviceToLogicalY(y)

// Relative
#define MS_XDEV2LOGREL(x) DeviceToLogicalXRel(x)
#define MS_YDEV2LOGREL(y) DeviceToLogicalYRel(y)

#define MM_POINTS      7
#define MM_METRIC      8

extern int wxPageNumber;

// Conversion
#define METRIC_CONVERSION_CONSTANT  0.0393700787

// Scaling factors for various unit conversions
#define mm2inches (METRIC_CONVERSION_CONSTANT)
#define inches2mm (1/METRIC_CONVERSION_CONSTANT)

#define mm2twips (METRIC_CONVERSION_CONSTANT*1440)
#define twips2mm (1/(METRIC_CONVERSION_CONSTANT*1440))

#define mm2pt (METRIC_CONVERSION_CONSTANT*72)
#define pt2mm (1/(METRIC_CONVERSION_CONSTANT*72))

#define     wx_round(a)    (int)((a)+.5)


#endif
    // __DCH__
Commit	Line	Data
2bda0e17 KB	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: dc.h
	3	// Purpose: wxDC class
	4	// Author: Julian Smart
	5	// Modified by:
	6	// Created: 01/02/97
	7	// RCS-ID: $Id$
	8	// Copyright: (c) Julian Smart and Markus Holzem
	9	// Licence: wxWindows license
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	#ifndef __DCH__
	13	#define __DCH__
	14
	15	#ifdef __GNUG__
	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	class WXDLLEXPORT wxDC: public wxObject
	26	{
	27	DECLARE_ABSTRACT_CLASS(wxDC)
	28	protected:
	29	public:
	30	wxDC(void);
	31	~wxDC(void);
	32
	33	inline void wxDC::BeginDrawing(void) {}
	34	inline void wxDC::EndDrawing(void) {}
	35
	36	virtual void FloodFill(long x1, long y1, wxColour *col, int style=wxFLOOD_SURFACE) ;
	37	virtual bool GetPixel(long x1, long y1, wxColour *col) const ;
	38
	39	virtual void DrawLine(long x1, long y1, long x2, long y2);
	40	virtual void CrossHair(long x, long y) ;
	41	virtual void DrawArc(long x1,long y1,long x2,long y2,double xc, double yc);
	42	virtual void DrawEllipticArc (long x, long y, long w, long h, double sa, double ea);
	43	virtual void DrawPoint(long x, long y);
	44
	45	virtual void DrawLines(int n, wxPoint points[], long xoffset = 0, long yoffset = 0);
	46
	47	virtual void DrawPolygon(int n, wxPoint points[], long xoffset = 0, long yoffset = 0, int fillStyle=wxODDEVEN_RULE);
	48
	49	virtual void DrawRectangle(long x, long y, long width, long height);
	50	virtual void DrawRoundedRectangle(long x, long y, long width, long height, double radius = 20.0);
	51	virtual void DrawEllipse(long x, long y, long width, long height);
	52
	53	virtual void DrawIcon(const wxIcon& icon, long x, long y);
	54
	55	virtual void Clear(void);
	56	virtual void SetFont(const wxFont& font);
	57	virtual void SetPen(const wxPen& pen);
	58	virtual void SetBrush(const wxBrush& brush);
	59	virtual void SetLogicalFunction(int function);
	60	virtual void SetBackground(const wxBrush& brush);
	61	virtual void SetBackgroundMode(int mode);
	62	virtual void SetClippingRegion(long x, long y, long width, long height);
	63	virtual void SetPalette(const wxPalette& palette);
	64	#if WXWIN_COMPATIBILITY
65	virtual inline void SetColourMap(const wxPalette& palette) { SetPalette(palette); };
66	#endif
67	virtual void DestroyClippingRegion(void);
68	virtual void DrawText(const wxString& text, long x, long y, bool use16bit = FALSE);
69
70	virtual long GetCharHeight(void) const;
71	virtual long GetCharWidth(void) const;
72	virtual void GetTextExtent(const wxString& string, long x, long y,
73	long descent = NULL, long externalLeading = NULL,
74	wxFont *theFont = NULL, bool use16bit = FALSE) const;
75	#if WXWIN_COMPATIBILITY
76	void GetTextExtent(const wxString& string, float x, float y,
77	float descent = NULL, float externalLeading = NULL,
78	wxFont *theFont = NULL, bool use16bit = FALSE) const ;
79	#endif
80
81	// Size in device units
82	virtual void GetSize(int* width, int* height) const;
83	inline wxSize GetSize(void) const { int w, h; GetSize(&w, &h); return wxSize(w, h); }
84
85	// Size in mm
86	virtual void GetSizeMM(long* width, long* height) const ;
87
88	// Compatibility
89	#if WXWIN_COMPATIBILITY
90	inline void GetSize(float* width, float* height) const { int w, h; GetSize(& w, & h); width = w; height = h; }
91	inline void GetSizeMM(float width, float height) const { long w, h; GetSizeMM(& w, & h); width = (float) w; height = (float) h; }
92	#endif
93
94	virtual bool StartDoc(const wxString& message);
95	virtual void EndDoc(void);
96	virtual void StartPage(void);
97	virtual void EndPage(void);
98	virtual void SetMapMode(int mode);
99	virtual void SetUserScale(double x, double y);
100	virtual void SetSystemScale(double x, double y);
101	virtual void SetLogicalOrigin(long x, long y);
102	virtual void SetDeviceOrigin(long x, long y);
103
104	// This group of functions does actual conversion
105	// of the input, as you'd expect.
106
107	long DeviceToLogicalX(long x) const;
108	long DeviceToLogicalY(long y) const;
109	long DeviceToLogicalXRel(long x) const;
110	long DeviceToLogicalYRel(long y) const;
111	long LogicalToDeviceX(long x) const;
112	long LogicalToDeviceY(long y) const;
113	long LogicalToDeviceXRel(long x) const;
114	long LogicalToDeviceYRel(long y) const;
115
116	// This group of functions may not do any conversion
117	// if m_scaleGDI is TRUE, since the HDC does the
118	// conversion automatically.
119	// m_scaleGDI NOW OBSOLETE
120	long ImplDeviceToLogicalX(long x) const;
121	long ImplDeviceToLogicalY(long y) const;
122	long ImplDeviceToLogicalXRel(long x) const;
123	long ImplDeviceToLogicalYRel(long y) const;
124	long ImplLogicalToDeviceX(long x) const;
125	long ImplLogicalToDeviceY(long y) const;
126	long ImplLogicalToDeviceXRel(long x) const;
127	long ImplLogicalToDeviceYRel(long y) const;
128
129	virtual bool Blit(long xdest, long ydest, long width, long height,
130	wxDC *source, long xsrc, long ysrc, int rop = wxCOPY, bool useMask = FALSE);
131
132	virtual bool CanDrawBitmap(void) const;
133	virtual bool CanGetTextExtent(void) const;
134
135	//
136	// This function is intended to improves drawing, by avoiding to
137	// repeatly call ::SetPen/::SetBrush. If set to FALSE, these functions
138	// aren't called when calling ::DrawLine(),...
139	// Please note that this is YOUR responsability to use it, and do it
140	// only when you KNOWN that pen/brush isn't changed between 2 calls to
141	// DrawLine,... !!!
142	// Note also that in X, we don't test m_autoSetting on brushes, because they
143	// modify Foreground, as pens. So, convention is:
144	// - call your SetBrush(), THEN your SetPen, THEN AutoSetTools(FALSE)
145	// - call DrawLine,...
146	// [mainly coded for Windows]
147	inline virtual void AutoSetTools(bool auto_setting) { m_autoSetting = auto_setting ; }
148	inline virtual void DrawPoint(wxPoint& point) { DrawPoint(point.x, point.y); }
149	virtual void DrawLines(wxList *list, long xoffset = 0, long yoffset = 0);
150	virtual void DrawPolygon(wxList *list, long xoffset = 0, long yoffset = 0, int fillStyle=wxODDEVEN_RULE);
151	#if USE_SPLINES
152	// Splines
153	// 3-point spline
154	virtual void DrawSpline(long x1, long y1, long x2, long y2, long x3, long y3);
155	// Any number of control points - a list of pointers to wxPoints
156	virtual void DrawSpline(wxList *points);
157	virtual void DrawSpline(int n, wxPoint points[]);
158	#endif
159	virtual void SetTextForeground(const wxColour& colour);
160	virtual void SetTextBackground(const wxColour& colour);
161	inline virtual bool Ok(void) const {return m_ok;};
162	inline virtual int GetMapMode(void) const {return m_mappingMode;};
163
164	inline virtual wxBrush GetBackground(void) const { return (wxBrush) &m_backgroundBrush ;}
165	inline virtual wxBrush GetBrush(void) const { return (wxBrush) &m_brush ;}
166	inline virtual wxFont GetFont(void) const { return (wxFont) &m_font ;}
167	inline virtual int GetLogicalFunction(void) const { return m_logicalFunction ;}
168	inline virtual wxPen GetPen(void) const { return (wxPen) &m_pen ;}
169	inline virtual wxColour&GetTextBackground(void) const { return (wxColour&) m_textBackgroundColour ;}
170	inline virtual wxColour&GetTextForeground(void) const { return (wxColour&) m_textForegroundColour ;}
171
172	virtual void SetLogicalScale(double x, double y);
173	virtual inline void GetUserScale(double* x, double y) const { x = m_userScaleX; *y = m_userScaleY; }
174	virtual void CalcBoundingBox(long x, long y);
175	// Get the final bounding box of the PostScript or Metafile picture.
176	virtual inline long MinX(void) const { return m_minX; }
177	virtual inline long MaxX(void) const { return m_maxX; }
178	virtual inline long MinY(void) const { return m_minY; }
179	virtual inline long MaxY(void) const { return m_maxY; }
180	// Sometimes we need to override optimization, e.g.
181	// if other software is drawing onto our surface and we
182	// can't be sure of who's done what.
183	virtual inline void SetOptimization(bool WXUNUSED(opt)) { }
184	virtual inline bool GetOptimization(void) { return FALSE; }
185
186	virtual void GetClippingBox(long x,long y,long w,long h) const ;
187
188	virtual void SetRop(WXHDC cdc);
189	virtual void DoClipping(WXHDC cdc);
190	virtual void SelectOldObjects(WXHDC dc);
191
192	inline wxWindow *GetWindow(void) const { return m_canvas; }
193	inline void SetWindow(wxWindow *win) { m_canvas = win; }
194	inline WXHDC GetHDC(void) const { return m_hDC; }
195	inline void SetHDC(WXHDC dc, bool bOwnsDC = FALSE) { m_hDC = dc; m_bOwnsDC = bOwnsDC; }
196	inline bool GetAutoSetting(void) const { return m_autoSetting; }
197
198	// inline bool GetScaleGDI(void) const { return m_scaleGDI; }
199	// inline void SetScaleGDI(bool flag) { m_scaleGDI = flag; }
200
201	protected:
202	bool m_colour;
203	bool m_ok;
204	bool m_clipping;
205	bool m_isInteractive;
206
207	// Coordinate system variables
208	long m_logicalOriginX;
209	long m_logicalOriginY;
210
211	long m_deviceOriginX;
212	long m_deviceOriginY;
213
214	double m_logicalScaleX;
215	double m_logicalScaleY;
216
217	double m_userScaleX;
218	double m_userScaleY;
219
220	int m_mappingMode;
221
222	long m_minX; // bounding box
223	long m_minY;
224	long m_maxX;
225	long m_maxY;
226
227	int m_logicalFunction;
228	int m_backgroundMode;
229
230	wxPen m_pen;
231	wxBrush m_brush;
232	wxBrush m_backgroundBrush;
233	wxColour m_textForegroundColour;
234	wxColour m_textBackgroundColour;
235	wxFont m_font;
236	wxPalette m_palette;
237	bool m_autoSetting ;
238	int m_clipX1;
239	int m_clipY1;
240	int m_clipX2;
241	int m_clipY2;
242	// bool m_dontDelete;
243	int m_windowExtX;
244	int m_windowExtY;
245	double m_systemScaleX;
246	double m_systemScaleY;
247
248	wxWindow * m_canvas;
249	wxBitmap m_selectedBitmap;
250	wxString m_filename;
251
252	// TRUE => DeleteDC() in dtor, FALSE => only ReleaseDC() it
253	bool m_bOwnsDC;
254
255	WXHDC m_hDC;
256	int m_hDCCount;
257
258	// Store all old GDI objects when do a SelectObject,
259	// so we can select them back in (this unselecting user's
260	// objects) so we can safely delete the DC.
261	WXHBITMAP m_oldBitmap;
262	WXHPEN m_oldPen;
263	WXHBRUSH m_oldBrush;
264	WXHFONT m_oldFont;
265	WXHPALETTE m_oldPalette;
266
267	// Stores scaling, translation, rotation
268	// wxTransformMatrix m_transformMatrix;
269
270	// Do we wish to scale GDI objects too, e.g. pen width?
271	// bool m_scaleGDI;
272	};
273
274	// Logical to device
275	// Absolute
276	#define XLOG2DEV(x) ImplLogicalToDeviceX(x)
277
278	#define YLOG2DEV(y) ImplLogicalToDeviceY(y)
279
280	// Relative
281	#define XLOG2DEVREL(x) ImplLogicalToDeviceXRel(x)
282	#define YLOG2DEVREL(y) ImplLogicalToDeviceYRel(y)
283
284	// Device to logical
285	// Absolute
286	#define XDEV2LOG(x) ImplDeviceToLogicalX(x)
287
288	#define YDEV2LOG(y) ImplDeviceToLogicalY(y)
289
290	// Relative
291	#define XDEV2LOGREL(x) ImplDeviceToLogicalXRel(x)
292	#define YDEV2LOGREL(y) ImplDeviceToLogicalYRel(y)
293
294	/*
295	* Have the same macros as for XView but not for every operation:
296	* just for calculating window/viewport extent (a better way of scaling).
297	*/
298
299	// Logical to device
300	// Absolute
301	#define MS_XLOG2DEV(x) LogicalToDevice(x)
302
303	#define MS_YLOG2DEV(y) LogicalToDevice(y)
304
305	// Relative
306	#define MS_XLOG2DEVREL(x) LogicalToDeviceXRel(x)
307	#define MS_YLOG2DEVREL(y) LogicalToDeviceYRel(y)
308
309	// Device to logical
310	// Absolute
311	#define MS_XDEV2LOG(x) DeviceToLogicalX(x)
312
313	#define MS_YDEV2LOG(y) DeviceToLogicalY(y)
314
315	// Relative
316	#define MS_XDEV2LOGREL(x) DeviceToLogicalXRel(x)
317	#define MS_YDEV2LOGREL(y) DeviceToLogicalYRel(y)
318
319	#define MM_POINTS 7
320	#define MM_METRIC 8
321
322	extern int wxPageNumber;
323
324	// Conversion
325	#define METRIC_CONVERSION_CONSTANT 0.0393700787
326
327	// Scaling factors for various unit conversions
328	#define mm2inches (METRIC_CONVERSION_CONSTANT)
329	#define inches2mm (1/METRIC_CONVERSION_CONSTANT)
330
331	#define mm2twips (METRIC_CONVERSION_CONSTANT*1440)
332	#define twips2mm (1/(METRIC_CONVERSION_CONSTANT*1440))
333
334	#define mm2pt (METRIC_CONVERSION_CONSTANT*72)
335	#define pt2mm (1/(METRIC_CONVERSION_CONSTANT*72))
336
337	#define wx_round(a) (int)((a)+.5)
338
339
340	#endif
341	// __DCH__