[wxWidgets.git] / include / wx / dcmirror.h

///////////////////////////////////////////////////////////////////////////////
// Name:        wx/dcmirror.h
// Purpose:     wxMirrorDC class
// Author:      Vadim Zeitlin
// Modified by:
// Created:     21.07.2003
// RCS-ID:      $Id$
// Copyright:   (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

#ifndef _WX_DCMIRROR_H_
#define _WX_DCMIRROR_H_

#include "wx/dc.h"

// ----------------------------------------------------------------------------
// wxMirrorDC allows to write the same code for horz/vertical layout
// ----------------------------------------------------------------------------

class WXDLLIMPEXP_CORE wxMirrorDCImpl : public wxDCImpl
{
public:
    // constructs a mirror DC associated with the given real DC
    //
    // if mirror parameter is true, all vertical and horizontal coordinates are
    // exchanged, otherwise this class behaves in exactly the same way as a
    // plain DC
    wxMirrorDCImpl(wxDC *owner, wxDCImpl& dc, bool mirror)
        : wxDCImpl(owner),
          m_dc(dc)
    {
        m_mirror = mirror;
    }

    // wxDCBase operations
    virtual void Clear() { m_dc.Clear(); }
    virtual void SetFont(const wxFont& font) { m_dc.SetFont(font); }
    virtual void SetPen(const wxPen& pen) { m_dc.SetPen(pen); }
    virtual void SetBrush(const wxBrush& brush) { m_dc.SetBrush(brush); }
    virtual void SetBackground(const wxBrush& brush)
        { m_dc.SetBackground(brush); }
    virtual void SetBackgroundMode(int mode) { m_dc.SetBackgroundMode(mode); }
#if wxUSE_PALETTE
    virtual void SetPalette(const wxPalette& palette)
        { m_dc.SetPalette(palette); }
#endif // wxUSE_PALETTE
    virtual void DestroyClippingRegion() { m_dc.DestroyClippingRegion(); }
    virtual wxCoord GetCharHeight() const { return m_dc.GetCharHeight(); }
    virtual wxCoord GetCharWidth() const { return m_dc.GetCharWidth(); }
    virtual bool CanDrawBitmap() const { return m_dc.CanDrawBitmap(); }
    virtual bool CanGetTextExtent() const { return m_dc.CanGetTextExtent(); }
    virtual int GetDepth() const { return m_dc.GetDepth(); }
    virtual wxSize GetPPI() const { return m_dc.GetPPI(); }
    virtual bool IsOk() const { return m_dc.IsOk(); }
    virtual void SetMapMode(wxMappingMode mode) { m_dc.SetMapMode(mode); }
    virtual void SetUserScale(double x, double y)
        { m_dc.SetUserScale(GetX(x, y), GetY(x, y)); }
    virtual void SetLogicalOrigin(wxCoord x, wxCoord y)
        { m_dc.SetLogicalOrigin(GetX(x, y), GetY(x, y)); }
    virtual void SetDeviceOrigin(wxCoord x, wxCoord y)
        { m_dc.SetDeviceOrigin(GetX(x, y), GetY(x, y)); }
    virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp)
        { m_dc.SetAxisOrientation(GetX(xLeftRight, yBottomUp),
                                  GetY(xLeftRight, yBottomUp)); }
    virtual void SetLogicalFunction(wxRasterOperationMode function)
        { m_dc.SetLogicalFunction(function); }

    virtual void* GetHandle() const
        { return m_dc.GetHandle(); }

protected:
    // returns x and y if not mirroring or y and x if mirroring
    wxCoord GetX(wxCoord x, wxCoord y) const { return m_mirror ? y : x; }
    wxCoord GetY(wxCoord x, wxCoord y) const { return m_mirror ? x : y; }
    double GetX(double x, double y) const { return m_mirror ? y : x; }
    double GetY(double x, double y) const { return m_mirror ? x : y; }
    bool GetX(bool x, bool y) const { return m_mirror ? y : x; }
    bool GetY(bool x, bool y) const { return m_mirror ? x : y; }

    // same thing but for pointers
    wxCoord *GetX(wxCoord *x, wxCoord *y) const { return m_mirror ? y : x; }
    wxCoord *GetY(wxCoord *x, wxCoord *y) const { return m_mirror ? x : y; }

    // exchange x and y unconditionally
    static void Swap(wxCoord& x, wxCoord& y)
    {
        wxCoord t = x;
        x = y;
        y = t;
    }

    // exchange x and y components of all points in the array if necessary
    void Mirror(int n, wxPoint points[]) const
    {
        if ( m_mirror )
        {
            for ( int i = 0; i < n; i++ )
            {
                Swap(points[i].x, points[i].y);
            }
        }
    }


    // wxDCBase functions
    virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
                             wxFloodFillStyle style = wxFLOOD_SURFACE)
    {
        return m_dc.DoFloodFill(GetX(x, y), GetY(x, y), col, style);
    }

    virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const
    {
        return m_dc.DoGetPixel(GetX(x, y), GetY(x, y), col);
    }


    virtual void DoDrawPoint(wxCoord x, wxCoord y)
    {
        m_dc.DoDrawPoint(GetX(x, y), GetY(x, y));
    }

    virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
    {
        m_dc.DoDrawLine(GetX(x1, y1), GetY(x1, y1), GetX(x2, y2), GetY(x2, y2));
    }

    virtual void DoDrawArc(wxCoord x1, wxCoord y1,
                           wxCoord x2, wxCoord y2,
                           wxCoord xc, wxCoord yc)
    {
        wxFAIL_MSG( wxT("this is probably wrong") );

        m_dc.DoDrawArc(GetX(x1, y1), GetY(x1, y1),
                       GetX(x2, y2), GetY(x2, y2),
                       xc, yc);
    }

    virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
                                 wxCoord w, wxCoord h)
    {
        m_dc.DoDrawCheckMark(GetX(x, y), GetY(x, y),
                             GetX(w, h), GetY(w, h));
    }

    virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
                                   double sa, double ea)
    {
        wxFAIL_MSG( wxT("this is probably wrong") );

        m_dc.DoDrawEllipticArc(GetX(x, y), GetY(x, y),
                               GetX(w, h), GetY(w, h),
                               sa, ea);
    }

    virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
    {
        m_dc.DoDrawRectangle(GetX(x, y), GetY(x, y), GetX(w, h), GetY(w, h));
    }

    virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
                                        wxCoord w, wxCoord h,
                                        double radius)
    {
        m_dc.DoDrawRoundedRectangle(GetX(x, y), GetY(x, y),
                                    GetX(w, h), GetY(w, h),
                                    radius);
    }

    virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
    {
        m_dc.DoDrawEllipse(GetX(x, y), GetY(x, y), GetX(w, h), GetY(w, h));
    }

    virtual void DoCrossHair(wxCoord x, wxCoord y)
    {
        m_dc.DoCrossHair(GetX(x, y), GetY(x, y));
    }

    virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
    {
        m_dc.DoDrawIcon(icon, GetX(x, y), GetY(x, y));
    }

    virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
                              bool useMask = false)
    {
        m_dc.DoDrawBitmap(bmp, GetX(x, y), GetY(x, y), useMask);
    }

    virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y)
    {
        // this is never mirrored
        m_dc.DoDrawText(text, x, y);
    }

    virtual void DoDrawRotatedText(const wxString& text,
                                   wxCoord x, wxCoord y, double angle)
    {
        // this is never mirrored
        m_dc.DoDrawRotatedText(text, x, y, angle);
    }

    virtual bool DoBlit(wxCoord xdest, wxCoord ydest,
                        wxCoord w, wxCoord h,
                        wxDC *source, wxCoord xsrc, wxCoord ysrc,
                        wxRasterOperationMode rop = wxCOPY,
                        bool useMask = false,
                        wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord)
    {
        return m_dc.DoBlit(GetX(xdest, ydest), GetY(xdest, ydest),
                           GetX(w, h), GetY(w, h),
                           source, GetX(xsrc, ysrc), GetY(xsrc, ysrc),
                           rop, useMask,
                           GetX(xsrcMask, ysrcMask), GetX(xsrcMask, ysrcMask));
    }

    virtual void DoGetSize(int *w, int *h) const
    {
        m_dc.DoGetSize(GetX(w, h), GetY(w, h));
    }

    virtual void DoGetSizeMM(int *w, int *h) const
    {
        m_dc.DoGetSizeMM(GetX(w, h), GetY(w, h));
    }

    virtual void DoDrawLines(int n, wxPoint points[],
                             wxCoord xoffset, wxCoord yoffset)
    {
        Mirror(n, points);

        m_dc.DoDrawLines(n, points,
                         GetX(xoffset, yoffset), GetY(xoffset, yoffset));

        Mirror(n, points);
    }

    virtual void DoDrawPolygon(int n, wxPoint points[],
                               wxCoord xoffset, wxCoord yoffset,
                               wxPolygonFillMode fillStyle = wxODDEVEN_RULE)
    {
        Mirror(n, points);

        m_dc.DoDrawPolygon(n, points,
                           GetX(xoffset, yoffset), GetY(xoffset, yoffset),
                           fillStyle);

        Mirror(n, points);
    }

    virtual void DoSetDeviceClippingRegion(const wxRegion& WXUNUSED(region))
    {
        wxFAIL_MSG( wxT("not implemented") );
    }

    virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
                                     wxCoord w, wxCoord h)
    {
        m_dc.DoSetClippingRegion(GetX(x, y), GetY(x, y), GetX(w, h), GetY(w, h));
    }

    virtual void DoGetTextExtent(const wxString& string,
                                 wxCoord *x, wxCoord *y,
                                 wxCoord *descent = NULL,
                                 wxCoord *externalLeading = NULL,
                                 const wxFont *theFont = NULL) const
    {
        // never mirrored
        m_dc.DoGetTextExtent(string, x, y, descent, externalLeading, theFont);
    }

private:
    wxDCImpl& m_dc;

    bool m_mirror;

    wxDECLARE_NO_COPY_CLASS(wxMirrorDCImpl);
};

class WXDLLIMPEXP_CORE wxMirrorDC : public wxDC
{
public:
    wxMirrorDC(wxDC& dc, bool mirror)
        : wxDC(new wxMirrorDCImpl(this, *dc.GetImpl(), mirror))
    {
        m_mirror = mirror;
    }

    // helper functions which may be useful for the users of this class
    wxSize Reflect(const wxSize& sizeOrig)
    {
        return m_mirror ? wxSize(sizeOrig.y, sizeOrig.x) : sizeOrig;
    }

private:
    bool m_mirror;

    wxDECLARE_NO_COPY_CLASS(wxMirrorDC);
};

#endif // _WX_DCMIRROR_H_
Commit	Line	Data
8f20ea03 VZ	1	///////////////////////////////////////////////////////////////////////////////
	2	// Name: wx/dcmirror.h
	3	// Purpose: wxMirrorDC class
	4	// Author: Vadim Zeitlin
	5	// Modified by:
	6	// Created: 21.07.2003
	7	// RCS-ID: $Id$
77ffb593	8	// Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
65571936	9	// Licence: wxWindows licence
8f20ea03 VZ	10	///////////////////////////////////////////////////////////////////////////////
	11
	12	#ifndef _WX_DCMIRROR_H_
	13	#define _WX_DCMIRROR_H_
	14
	15	#include "wx/dc.h"
	16
	17	// ----------------------------------------------------------------------------
	18	// wxMirrorDC allows to write the same code for horz/vertical layout
	19	// ----------------------------------------------------------------------------
	20
53a2db12	21	class WXDLLIMPEXP_CORE wxMirrorDCImpl : public wxDCImpl
8f20ea03 VZ	22	{
	23	public:
	24	// constructs a mirror DC associated with the given real DC
	25	//
	26	// if mirror parameter is true, all vertical and horizontal coordinates are
	27	// exchanged, otherwise this class behaves in exactly the same way as a
	28	// plain DC
f0875501 VZ	29	wxMirrorDCImpl(wxDC *owner, wxDCImpl& dc, bool mirror)
	30	: wxDCImpl(owner),
	31	m_dc(dc)
	32	{
	33	m_mirror = mirror;
	34	}
8f20ea03 VZ	35
	36	// wxDCBase operations
	37	virtual void Clear() { m_dc.Clear(); }
	38	virtual void SetFont(const wxFont& font) { m_dc.SetFont(font); }
	39	virtual void SetPen(const wxPen& pen) { m_dc.SetPen(pen); }
	40	virtual void SetBrush(const wxBrush& brush) { m_dc.SetBrush(brush); }
	41	virtual void SetBackground(const wxBrush& brush)
	42	{ m_dc.SetBackground(brush); }
	43	virtual void SetBackgroundMode(int mode) { m_dc.SetBackgroundMode(mode); }
	44	#if wxUSE_PALETTE
	45	virtual void SetPalette(const wxPalette& palette)
	46	{ m_dc.SetPalette(palette); }
	47	#endif // wxUSE_PALETTE
	48	virtual void DestroyClippingRegion() { m_dc.DestroyClippingRegion(); }
	49	virtual wxCoord GetCharHeight() const { return m_dc.GetCharHeight(); }
	50	virtual wxCoord GetCharWidth() const { return m_dc.GetCharWidth(); }
	51	virtual bool CanDrawBitmap() const { return m_dc.CanDrawBitmap(); }
	52	virtual bool CanGetTextExtent() const { return m_dc.CanGetTextExtent(); }
	53	virtual int GetDepth() const { return m_dc.GetDepth(); }
	54	virtual wxSize GetPPI() const { return m_dc.GetPPI(); }
f0875501	55	virtual bool IsOk() const { return m_dc.IsOk(); }
89efaf2b	56	virtual void SetMapMode(wxMappingMode mode) { m_dc.SetMapMode(mode); }
8f20ea03 VZ	57	virtual void SetUserScale(double x, double y)
	58	{ m_dc.SetUserScale(GetX(x, y), GetY(x, y)); }
	59	virtual void SetLogicalOrigin(wxCoord x, wxCoord y)
	60	{ m_dc.SetLogicalOrigin(GetX(x, y), GetY(x, y)); }
	61	virtual void SetDeviceOrigin(wxCoord x, wxCoord y)
	62	{ m_dc.SetDeviceOrigin(GetX(x, y), GetY(x, y)); }
	63	virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp)
	64	{ m_dc.SetAxisOrientation(GetX(xLeftRight, yBottomUp),
	65	GetY(xLeftRight, yBottomUp)); }
89efaf2b	66	virtual void SetLogicalFunction(wxRasterOperationMode function)
8f20ea03 VZ	67	{ m_dc.SetLogicalFunction(function); }
8f20ea03 VZ	68
9eefb5c1 RD	69	virtual void* GetHandle() const
	70	{ return m_dc.GetHandle(); }
	71
8f20ea03 VZ	72	protected:
	73	// returns x and y if not mirroring or y and x if mirroring
	74	wxCoord GetX(wxCoord x, wxCoord y) const { return m_mirror ? y : x; }
	75	wxCoord GetY(wxCoord x, wxCoord y) const { return m_mirror ? x : y; }
	76	double GetX(double x, double y) const { return m_mirror ? y : x; }
	77	double GetY(double x, double y) const { return m_mirror ? x : y; }
	78	bool GetX(bool x, bool y) const { return m_mirror ? y : x; }
	79	bool GetY(bool x, bool y) const { return m_mirror ? x : y; }
	80
	81	// same thing but for pointers
	82	wxCoord GetX(wxCoord x, wxCoord *y) const { return m_mirror ? y : x; }
	83	wxCoord GetY(wxCoord x, wxCoord *y) const { return m_mirror ? x : y; }
	84
	85	// exchange x and y unconditionally
	86	static void Swap(wxCoord& x, wxCoord& y)
	87	{
	88	wxCoord t = x;
	89	x = y;
	90	y = t;
	91	}
	92
	93	// exchange x and y components of all points in the array if necessary
	94	void Mirror(int n, wxPoint points[]) const
	95	{
	96	if ( m_mirror )
	97	{
	98	for ( int i = 0; i < n; i++ )
	99	{
	100	Swap(points[i].x, points[i].y);
	101	}
	102	}
	103	}
	104
	105
	106	// wxDCBase functions
	107	virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
89efaf2b	108	wxFloodFillStyle style = wxFLOOD_SURFACE)
8f20ea03 VZ	109	{
	110	return m_dc.DoFloodFill(GetX(x, y), GetY(x, y), col, style);
	111	}
	112
	113	virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const
	114	{
	115	return m_dc.DoGetPixel(GetX(x, y), GetY(x, y), col);
	116	}
	117
	118
	119	virtual void DoDrawPoint(wxCoord x, wxCoord y)
	120	{
	121	m_dc.DoDrawPoint(GetX(x, y), GetY(x, y));
	122	}
	123
	124	virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
	125	{
	126	m_dc.DoDrawLine(GetX(x1, y1), GetY(x1, y1), GetX(x2, y2), GetY(x2, y2));
	127	}
	128
	129	virtual void DoDrawArc(wxCoord x1, wxCoord y1,
	130	wxCoord x2, wxCoord y2,
	131	wxCoord xc, wxCoord yc)
	132	{
9a83f860	133	wxFAIL_MSG( wxT("this is probably wrong") );
8f20ea03 VZ	134
8f20ea03 VZ	135	m_dc.DoDrawArc(GetX(x1, y1), GetY(x1, y1),
68379eaf	136	GetX(x2, y2), GetY(x2, y2),
8f20ea03 VZ	137	xc, yc);
	138	}
	139
	140	virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
	141	wxCoord w, wxCoord h)
	142	{
	143	m_dc.DoDrawCheckMark(GetX(x, y), GetY(x, y),
	144	GetX(w, h), GetY(w, h));
	145	}
	146
	147	virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
	148	double sa, double ea)
	149	{
9a83f860	150	wxFAIL_MSG( wxT("this is probably wrong") );
8f20ea03 VZ	151
8f20ea03 VZ	152	m_dc.DoDrawEllipticArc(GetX(x, y), GetY(x, y),
68379eaf	153	GetX(w, h), GetY(w, h),
8f20ea03 VZ	154	sa, ea);
	155	}
	156
	157	virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
	158	{
	159	m_dc.DoDrawRectangle(GetX(x, y), GetY(x, y), GetX(w, h), GetY(w, h));
	160	}
	161
	162	virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
	163	wxCoord w, wxCoord h,
	164	double radius)
	165	{
	166	m_dc.DoDrawRoundedRectangle(GetX(x, y), GetY(x, y),
	167	GetX(w, h), GetY(w, h),
	168	radius);
	169	}
	170
	171	virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
	172	{
	173	m_dc.DoDrawEllipse(GetX(x, y), GetY(x, y), GetX(w, h), GetY(w, h));
	174	}
	175
	176	virtual void DoCrossHair(wxCoord x, wxCoord y)
	177	{
	178	m_dc.DoCrossHair(GetX(x, y), GetY(x, y));
	179	}
	180
	181	virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
	182	{
	183	m_dc.DoDrawIcon(icon, GetX(x, y), GetY(x, y));
	184	}
	185
	186	virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
68379eaf	187	bool useMask = false)
8f20ea03 VZ	188	{
	189	m_dc.DoDrawBitmap(bmp, GetX(x, y), GetY(x, y), useMask);
	190	}
	191
	192	virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y)
	193	{
	194	// this is never mirrored
	195	m_dc.DoDrawText(text, x, y);
	196	}
	197
	198	virtual void DoDrawRotatedText(const wxString& text,
	199	wxCoord x, wxCoord y, double angle)
	200	{
	201	// this is never mirrored
	202	m_dc.DoDrawRotatedText(text, x, y, angle);
	203	}
	204
	205	virtual bool DoBlit(wxCoord xdest, wxCoord ydest,
	206	wxCoord w, wxCoord h,
	207	wxDC *source, wxCoord xsrc, wxCoord ysrc,
03647350	208	wxRasterOperationMode rop = wxCOPY,
89efaf2b	209	bool useMask = false,
68379eaf	210	wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord)
8f20ea03 VZ	211	{
	212	return m_dc.DoBlit(GetX(xdest, ydest), GetY(xdest, ydest),
	213	GetX(w, h), GetY(w, h),
	214	source, GetX(xsrc, ysrc), GetY(xsrc, ysrc),
	215	rop, useMask,
	216	GetX(xsrcMask, ysrcMask), GetX(xsrcMask, ysrcMask));
	217	}
	218
	219	virtual void DoGetSize(int w, int h) const
	220	{
	221	m_dc.DoGetSize(GetX(w, h), GetY(w, h));
	222	}
	223
	224	virtual void DoGetSizeMM(int w, int h) const
	225	{
	226	m_dc.DoGetSizeMM(GetX(w, h), GetY(w, h));
	227	}
	228
	229	virtual void DoDrawLines(int n, wxPoint points[],
	230	wxCoord xoffset, wxCoord yoffset)
	231	{
	232	Mirror(n, points);
	233
	234	m_dc.DoDrawLines(n, points,
	235	GetX(xoffset, yoffset), GetY(xoffset, yoffset));
	236
	237	Mirror(n, points);
	238	}
	239
	240	virtual void DoDrawPolygon(int n, wxPoint points[],
	241	wxCoord xoffset, wxCoord yoffset,
89efaf2b	242	wxPolygonFillMode fillStyle = wxODDEVEN_RULE)
8f20ea03 VZ	243	{
	244	Mirror(n, points);
	245
	246	m_dc.DoDrawPolygon(n, points,
	247	GetX(xoffset, yoffset), GetY(xoffset, yoffset),
	248	fillStyle);
	249
	250	Mirror(n, points);
	251	}
	252
fdaad94e	253	virtual void DoSetDeviceClippingRegion(const wxRegion& WXUNUSED(region))
8f20ea03	254	{
9a83f860	255	wxFAIL_MSG( wxT("not implemented") );
8f20ea03 VZ	256	}
	257
	258	virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
	259	wxCoord w, wxCoord h)
	260	{
	261	m_dc.DoSetClippingRegion(GetX(x, y), GetY(x, y), GetX(w, h), GetY(w, h));
	262	}
	263
	264	virtual void DoGetTextExtent(const wxString& string,
	265	wxCoord x, wxCoord y,
	266	wxCoord *descent = NULL,
	267	wxCoord *externalLeading = NULL,
c94f845b	268	const wxFont *theFont = NULL) const
8f20ea03 VZ	269	{
	270	// never mirrored
	271	m_dc.DoGetTextExtent(string, x, y, descent, externalLeading, theFont);
	272	}
	273
	274	private:
f0875501 VZ	275	wxDCImpl& m_dc;
	276
	277	bool m_mirror;
	278
c0c133e1	279	wxDECLARE_NO_COPY_CLASS(wxMirrorDCImpl);
f0875501	280	};
8f20ea03	281
53a2db12	282	class WXDLLIMPEXP_CORE wxMirrorDC : public wxDC
f0875501 VZ	283	{
	284	public:
	285	wxMirrorDC(wxDC& dc, bool mirror)
	286	: wxDC(new wxMirrorDCImpl(this, *dc.GetImpl(), mirror))
	287	{
	288	m_mirror = mirror;
	289	}
	290
	291	// helper functions which may be useful for the users of this class
	292	wxSize Reflect(const wxSize& sizeOrig)
	293	{
	294	return m_mirror ? wxSize(sizeOrig.y, sizeOrig.x) : sizeOrig;
	295	}
	296
	297	private:
8f20ea03	298	bool m_mirror;
fc7a2a60	299
c0c133e1	300	wxDECLARE_NO_COPY_CLASS(wxMirrorDC);
8f20ea03 VZ	301	};
	302
	303	#endif // _WX_DCMIRROR_H_
	304