[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@wxwindows.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 WXDLLEXPORT wxMirrorDC : public wxDC
{
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
    //
    // the cast to wxMirrorDC is a dirty hack done to allow us to call the
    // protected methods of wxDCBase directly in our code below, without it it
    // would be impossible (this is correct from C++ point of view but doesn't
    // make any sense in this particular situation)
    wxMirrorDC(wxDC& dc, bool mirror) : m_dc((wxMirrorDC&)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 Ok() const { return m_dc.Ok(); }
    virtual void SetMapMode(int 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(int function)
        { m_dc.SetLogicalFunction(function); }

    // 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;
    }

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,
                             int 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( _T("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( _T("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,
                        int rop = wxCOPY, bool useMask = FALSE,
                        wxCoord xsrcMask = -1, wxCoord ysrcMask = -1)
    {
        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,
                               int fillStyle = wxODDEVEN_RULE)
    {
        Mirror(n, points);

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

        Mirror(n, points);
    }

    virtual void DoSetClippingRegionAsRegion(const wxRegion& WXUNUSED(region))
    {
        wxFAIL_MSG( _T("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,
                                 wxFont *theFont = NULL) const
    {
        // never mirrored
        m_dc.DoGetTextExtent(string, x, y, descent, externalLeading, theFont);
    }

private:
    wxMirrorDC& m_dc;

    bool m_mirror;

    DECLARE_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: $Id$
	8	// Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwindows.org>
	9	// Licence: wxWindows licence
	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
4a8cd018	21	class WXDLLEXPORT wxMirrorDC : public wxDC
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
	29	//
	30	// the cast to wxMirrorDC is a dirty hack done to allow us to call the
	31	// protected methods of wxDCBase directly in our code below, without it it
	32	// would be impossible (this is correct from C++ point of view but doesn't
	33	// make any sense in this particular situation)
	34	wxMirrorDC(wxDC& dc, bool mirror) : m_dc((wxMirrorDC&)dc)
	35	{ m_mirror = mirror; }
	36
	37	// wxDCBase operations
	38	virtual void Clear() { m_dc.Clear(); }
	39	virtual void SetFont(const wxFont& font) { m_dc.SetFont(font); }
	40	virtual void SetPen(const wxPen& pen) { m_dc.SetPen(pen); }
	41	virtual void SetBrush(const wxBrush& brush) { m_dc.SetBrush(brush); }
	42	virtual void SetBackground(const wxBrush& brush)
	43	{ m_dc.SetBackground(brush); }
	44	virtual void SetBackgroundMode(int mode) { m_dc.SetBackgroundMode(mode); }
	45	#if wxUSE_PALETTE
	46	virtual void SetPalette(const wxPalette& palette)
	47	{ m_dc.SetPalette(palette); }
	48	#endif // wxUSE_PALETTE
	49	virtual void DestroyClippingRegion() { m_dc.DestroyClippingRegion(); }
	50	virtual wxCoord GetCharHeight() const { return m_dc.GetCharHeight(); }
	51	virtual wxCoord GetCharWidth() const { return m_dc.GetCharWidth(); }
	52	virtual bool CanDrawBitmap() const { return m_dc.CanDrawBitmap(); }
	53	virtual bool CanGetTextExtent() const { return m_dc.CanGetTextExtent(); }
	54	virtual int GetDepth() const { return m_dc.GetDepth(); }
	55	virtual wxSize GetPPI() const { return m_dc.GetPPI(); }
	56	virtual bool Ok() const { return m_dc.Ok(); }
	57	virtual void SetMapMode(int mode) { m_dc.SetMapMode(mode); }
	58	virtual void SetUserScale(double x, double y)
	59	{ m_dc.SetUserScale(GetX(x, y), GetY(x, y)); }
	60	virtual void SetLogicalOrigin(wxCoord x, wxCoord y)
	61	{ m_dc.SetLogicalOrigin(GetX(x, y), GetY(x, y)); }
	62	virtual void SetDeviceOrigin(wxCoord x, wxCoord y)
	63	{ m_dc.SetDeviceOrigin(GetX(x, y), GetY(x, y)); }
	64	virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp)
	65	{ m_dc.SetAxisOrientation(GetX(xLeftRight, yBottomUp),
	66	GetY(xLeftRight, yBottomUp)); }
	67	virtual void SetLogicalFunction(int function)
	68	{ m_dc.SetLogicalFunction(function); }
	69
4a8cd018 VZ	70	// helper functions which may be useful for the users of this class
	71	wxSize Reflect(const wxSize& sizeOrig)
	72	{
	73	return m_mirror ? wxSize(sizeOrig.y, sizeOrig.x) : sizeOrig;
	74	}
	75
8f20ea03 VZ	76	protected:
	77	// returns x and y if not mirroring or y and x if mirroring
	78	wxCoord GetX(wxCoord x, wxCoord y) const { return m_mirror ? y : x; }
	79	wxCoord GetY(wxCoord x, wxCoord y) const { return m_mirror ? x : y; }
	80	double GetX(double x, double y) const { return m_mirror ? y : x; }
	81	double GetY(double x, double y) const { return m_mirror ? x : y; }
	82	bool GetX(bool x, bool y) const { return m_mirror ? y : x; }
	83	bool GetY(bool x, bool y) const { return m_mirror ? x : y; }
	84
	85	// same thing but for pointers
	86	wxCoord GetX(wxCoord x, wxCoord *y) const { return m_mirror ? y : x; }
	87	wxCoord GetY(wxCoord x, wxCoord *y) const { return m_mirror ? x : y; }
	88
	89	// exchange x and y unconditionally
	90	static void Swap(wxCoord& x, wxCoord& y)
	91	{
	92	wxCoord t = x;
	93	x = y;
	94	y = t;
	95	}
	96
	97	// exchange x and y components of all points in the array if necessary
	98	void Mirror(int n, wxPoint points[]) const
	99	{
	100	if ( m_mirror )
	101	{
	102	for ( int i = 0; i < n; i++ )
	103	{
	104	Swap(points[i].x, points[i].y);
	105	}
	106	}
	107	}
	108
	109
	110	// wxDCBase functions
	111	virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
	112	int style = wxFLOOD_SURFACE)
	113	{
	114	return m_dc.DoFloodFill(GetX(x, y), GetY(x, y), col, style);
	115	}
	116
	117	virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const
	118	{
	119	return m_dc.DoGetPixel(GetX(x, y), GetY(x, y), col);
	120	}
	121
	122
	123	virtual void DoDrawPoint(wxCoord x, wxCoord y)
	124	{
	125	m_dc.DoDrawPoint(GetX(x, y), GetY(x, y));
	126	}
	127
	128	virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2)
	129	{
	130	m_dc.DoDrawLine(GetX(x1, y1), GetY(x1, y1), GetX(x2, y2), GetY(x2, y2));
	131	}
	132
	133	virtual void DoDrawArc(wxCoord x1, wxCoord y1,
	134	wxCoord x2, wxCoord y2,
	135	wxCoord xc, wxCoord yc)
	136	{
	137	wxFAIL_MSG( _T("this is probably wrong") );
	138
	139	m_dc.DoDrawArc(GetX(x1, y1), GetY(x1, y1),
140	GetX(x2, y2), GetY(x2, y2),
141	xc, yc);
142	}
143
144	virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
145	wxCoord w, wxCoord h)
146	{
147	m_dc.DoDrawCheckMark(GetX(x, y), GetY(x, y),
148	GetX(w, h), GetY(w, h));
149	}
150
151	virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
152	double sa, double ea)
153	{
154	wxFAIL_MSG( _T("this is probably wrong") );
155
156	m_dc.DoDrawEllipticArc(GetX(x, y), GetY(x, y),
157	GetX(w, h), GetY(w, h),
158	sa, ea);
159	}
160
161	virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
162	{
163	m_dc.DoDrawRectangle(GetX(x, y), GetY(x, y), GetX(w, h), GetY(w, h));
164	}
165
166	virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
167	wxCoord w, wxCoord h,
168	double radius)
169	{
170	m_dc.DoDrawRoundedRectangle(GetX(x, y), GetY(x, y),
171	GetX(w, h), GetY(w, h),
172	radius);
173	}
174
175	virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
176	{
177	m_dc.DoDrawEllipse(GetX(x, y), GetY(x, y), GetX(w, h), GetY(w, h));
178	}
179
180	virtual void DoCrossHair(wxCoord x, wxCoord y)
181	{
182	m_dc.DoCrossHair(GetX(x, y), GetY(x, y));
183	}
184
185	virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y)
186	{
187	m_dc.DoDrawIcon(icon, GetX(x, y), GetY(x, y));
188	}
189
190	virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
191	bool useMask = FALSE)
192	{
193	m_dc.DoDrawBitmap(bmp, GetX(x, y), GetY(x, y), useMask);
194	}
195
196	virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y)
197	{
198	// this is never mirrored
199	m_dc.DoDrawText(text, x, y);
200	}
201
202	virtual void DoDrawRotatedText(const wxString& text,
203	wxCoord x, wxCoord y, double angle)
204	{
205	// this is never mirrored
206	m_dc.DoDrawRotatedText(text, x, y, angle);
207	}
208
209	virtual bool DoBlit(wxCoord xdest, wxCoord ydest,
210	wxCoord w, wxCoord h,
211	wxDC *source, wxCoord xsrc, wxCoord ysrc,
212	int rop = wxCOPY, bool useMask = FALSE,
213	wxCoord xsrcMask = -1, wxCoord ysrcMask = -1)
214	{
215	return m_dc.DoBlit(GetX(xdest, ydest), GetY(xdest, ydest),
216	GetX(w, h), GetY(w, h),
217	source, GetX(xsrc, ysrc), GetY(xsrc, ysrc),
218	rop, useMask,
219	GetX(xsrcMask, ysrcMask), GetX(xsrcMask, ysrcMask));
220	}
221
222	virtual void DoGetSize(int w, int h) const
223	{
224	m_dc.DoGetSize(GetX(w, h), GetY(w, h));
225	}
226
227	virtual void DoGetSizeMM(int w, int h) const
228	{
229	m_dc.DoGetSizeMM(GetX(w, h), GetY(w, h));
230	}
231
232	virtual void DoDrawLines(int n, wxPoint points[],
233	wxCoord xoffset, wxCoord yoffset)
234	{
235	Mirror(n, points);
236
237	m_dc.DoDrawLines(n, points,
238	GetX(xoffset, yoffset), GetY(xoffset, yoffset));
239
240	Mirror(n, points);
241	}
242
243	virtual void DoDrawPolygon(int n, wxPoint points[],
244	wxCoord xoffset, wxCoord yoffset,
245	int fillStyle = wxODDEVEN_RULE)
246	{
247	Mirror(n, points);
248
249	m_dc.DoDrawPolygon(n, points,
250	GetX(xoffset, yoffset), GetY(xoffset, yoffset),
251	fillStyle);
252
253	Mirror(n, points);
254	}
255
256	virtual void DoSetClippingRegionAsRegion(const wxRegion& WXUNUSED(region))
257	{
258	wxFAIL_MSG( _T("not implemented") );
259	}
260
261	virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
262	wxCoord w, wxCoord h)
263	{
264	m_dc.DoSetClippingRegion(GetX(x, y), GetY(x, y), GetX(w, h), GetY(w, h));
265	}
266
267	virtual void DoGetTextExtent(const wxString& string,
268	wxCoord x, wxCoord y,
269	wxCoord *descent = NULL,
270	wxCoord *externalLeading = NULL,
271	wxFont *theFont = NULL) const
272	{
273	// never mirrored
274	m_dc.DoGetTextExtent(string, x, y, descent, externalLeading, theFont);
275	}
276
277	private:
278	wxMirrorDC& m_dc;
279
280	bool m_mirror;
fc7a2a60 VZ	281
fc7a2a60 VZ	282	DECLARE_NO_COPY_CLASS(wxMirrorDC)
8f20ea03 VZ	283	};
	284
	285	#endif // _WX_DCMIRROR_H_
	286