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

/////////////////////////////////////////////////////////////////////////////
// Name:        dc.h
// Purpose:     wxDC class
// Author:      Vaclav Slavik
// Created:     2001/03/09
// RCS-ID:      $Id$
// Copyright:   (c) 2001-2002 SciTech Software, Inc. (www.scitechsoft.com)
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifndef _WX_DC_H_
#define _WX_DC_H_

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

#include "wx/defs.h"
#include "wx/dc.h"
#include "wx/region.h"

//-----------------------------------------------------------------------------
// classes
//-----------------------------------------------------------------------------

class WXDLLEXPORT wxDC;

//-----------------------------------------------------------------------------
// constants
//-----------------------------------------------------------------------------

#define MM_TEXT         0
#define MM_ISOTROPIC    1
#define MM_ANISOTROPIC  2
#define MM_LOMETRIC     3
#define MM_HIMETRIC     4
#define MM_TWIPS        5
#define MM_POINTS       6
#define MM_METRIC       7

//-----------------------------------------------------------------------------
// wxDC
//-----------------------------------------------------------------------------


// MGL fwd declarations:
class MGLDevCtx;
class MGLRegion;
struct font_t;

class WXDLLEXPORT wxDC : public wxDCBase
{
    DECLARE_DYNAMIC_CLASS(wxDC)

public:
    wxDC();
    ~wxDC();

    // implement base class pure virtuals
    // ----------------------------------

    virtual void Clear();

    virtual bool StartDoc(const wxString& message);
    virtual void EndDoc();

    virtual void StartPage();
    virtual void EndPage();

    virtual void SetFont(const wxFont& font);
    virtual void SetPen(const wxPen& pen);
    virtual void SetBrush(const wxBrush& brush);
    virtual void SetBackground(const wxBrush& brush);
    virtual void SetBackgroundMode(int mode);
    virtual void SetPalette(const wxPalette& palette);

    virtual void DestroyClippingRegion();

    virtual wxCoord GetCharHeight() const;
    virtual wxCoord GetCharWidth() const;
    virtual void DoGetTextExtent(const wxString& string,
                                 wxCoord *x, wxCoord *y,
                                 wxCoord *descent = NULL,
                                 wxCoord *externalLeading = NULL,
                                 wxFont *theFont = NULL) const;

    virtual bool CanDrawBitmap() const;
    virtual bool CanGetTextExtent() const;
    virtual int GetDepth() const;
    virtual wxSize GetPPI() const;

    virtual void SetMapMode(int mode);
    virtual void SetUserScale(double x, double y);
    virtual void SetLogicalScale(double x, double y);
    virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
    virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
    virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
    virtual void SetLogicalFunction(int function);

    // implementation from now on
    // --------------------------
    
    virtual void ComputeScaleAndOrigin();

    wxCoord XDEV2LOG(wxCoord x) const
    {
        wxCoord new_x = x - m_deviceOriginX;
        if (new_x > 0)
            return (wxCoord)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
        else
            return (wxCoord)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
    }
    wxCoord XDEV2LOGREL(wxCoord x) const
    {
        if (x > 0)
            return (wxCoord)((double)(x) / m_scaleX + 0.5);
        else
            return (wxCoord)((double)(x) / m_scaleX - 0.5);
    }
    wxCoord YDEV2LOG(wxCoord y) const
    {
        wxCoord new_y = y - m_deviceOriginY;
        if (new_y > 0)
            return (wxCoord)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
        else
            return (wxCoord)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
    }
    wxCoord YDEV2LOGREL(wxCoord y) const
    {
        if (y > 0)
            return (wxCoord)((double)(y) / m_scaleY + 0.5);
        else
            return (wxCoord)((double)(y) / m_scaleY - 0.5);
    }
    wxCoord XLOG2DEV(wxCoord x) const
    {
        wxCoord new_x = x - m_logicalOriginX;
        if (new_x > 0)
            return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
        else
            return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
    }
    wxCoord XLOG2DEVREL(wxCoord x) const
    {
        if (x > 0)
            return (wxCoord)((double)(x) * m_scaleX + 0.5);
        else
            return (wxCoord)((double)(x) * m_scaleX - 0.5);
    }
    wxCoord YLOG2DEV(wxCoord y) const
    {
        wxCoord new_y = y - m_logicalOriginY;
        if (new_y > 0)
            return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
        else
            return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
    }
    wxCoord YLOG2DEVREL(wxCoord y) const
    {
        if (y > 0)
            return (wxCoord)((double)(y) * m_scaleY + 0.5);
        else
            return (wxCoord)((double)(y) * m_scaleY - 0.5);
    }

    MGLDevCtx *GetMGLDC() const { return m_MGLDC; }
    void SetMGLDC(MGLDevCtx *mgldc, bool OwnsMGLDC = FALSE);

protected:
    virtual void DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
                             int style = wxFLOOD_SURFACE);

    virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;

    virtual void DoDrawPoint(wxCoord x, wxCoord y);
    virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);

    virtual void DoDrawArc(wxCoord x1, wxCoord y1,
                           wxCoord x2, wxCoord y2,
                           wxCoord xc, wxCoord yc);
    virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
                                   double sa, double ea);

    virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
    virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
                                        wxCoord width, wxCoord height,
                                        double radius);
    virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);

    virtual void DoCrossHair(wxCoord x, wxCoord y);

    virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
    virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
                              bool useMask = FALSE);

    virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
    virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
                                   double angle);

    virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
                        wxDC *source, wxCoord xsrc, wxCoord ysrc,
                        int rop = wxCOPY, bool useMask = FALSE, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);

    // this is gnarly - we can't even call this function DoSetClippingRegion()
    // because of virtual function hiding
    virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
    virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
                                     wxCoord width, wxCoord height);
    virtual void DoGetClippingRegion(wxCoord *x, wxCoord *y,
                                     wxCoord *width, wxCoord *height)
    {
        GetClippingBox(x, y, width, height);
    }

    virtual void DoGetSize(int *width, int *height) const;
    virtual void DoGetSizeMM(int* width, int* height) const;

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

    // implementation from now on:

protected:
    // setup newly attached MGLDevCtx for wxDC's use
    // (does things like setting RGB blending mode for antialiased texts):
    void InitializeMGLDC();

    // common part of DoDrawText() and DoDrawRotatedText()
    void DrawAnyText(const wxString& text, wxCoord x, wxCoord y);
    
    // MGL uses pens as both wxPens and wxBrushes, so we have to
    // switch them as needed:
    void SelectPen();
    void SelectBrush();
    void SelectMGLStipplePen(int style);
    void SelectMGLFatPen(int style, int flag);
    
    // Select m_font into m_MGLDC:
    bool SelectMGLFont();
    
    // Convert wxWin logical function to MGL rop:
    int LogicalFunctionToMGLRop(int logFunc) const;
    
    // Unified implementation of DrawIcon, DrawBitmap and Blit:
    void DoDrawSubBitmap(const wxBitmap &bmp, 
                         wxCoord x, wxCoord y, wxCoord w, wxCoord h,
                         wxCoord destx, wxCoord desty, int rop, bool useMask);

    // MGL DC class we use:
    MGLDevCtx        *m_MGLDC;
    bool              m_OwnsMGLDC:1;
   
    // helper variables for SelectXXXX():
    bool              m_penSelected;
    bool              m_brushSelected;
    bool              m_downloadedPatterns[2];

    // MGL does not render lines with width>1 with endings centered 
    // at given coords but with top left corner of the pen at them,
    // these offsets are used to correct it. They are computed by
    // SelectPen.
    int               m_penOfsX, m_penOfsY;

    double            m_mm_to_pix_x, m_mm_to_pix_y;
    
    wxPalette         m_oldPalette;
    
    wxRegion          m_currentClippingRegion;
    wxRegion          m_globalClippingRegion;

    // wxDC::Blit handles memoryDCs as special cases :(
    bool              m_isMemDC;
    
    font_t            *m_mglFont;
};

#endif
    // _WX_DC_H_
Commit	Line	Data
32b8ec41 VZ	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: dc.h
	3	// Purpose: wxDC class
	4	// Author: Vaclav Slavik
	5	// Created: 2001/03/09
	6	// RCS-ID: $Id$
52750c2e	7	// Copyright: (c) 2001-2002 SciTech Software, Inc. (www.scitechsoft.com)
32b8ec41 VZ	8	// Licence: wxWindows licence
	9	/////////////////////////////////////////////////////////////////////////////
	10
	11	#ifndef _WX_DC_H_
	12	#define _WX_DC_H_
	13
	14	#ifdef __GNUG__
	15	#pragma interface "dc.h"
	16	#endif
	17
	18	#include "wx/defs.h"
	19	#include "wx/dc.h"
	20	#include "wx/region.h"
	21
	22	//-----------------------------------------------------------------------------
	23	// classes
	24	//-----------------------------------------------------------------------------
	25
	26	class WXDLLEXPORT wxDC;
	27
	28	//-----------------------------------------------------------------------------
	29	// constants
	30	//-----------------------------------------------------------------------------
	31
	32	#define MM_TEXT 0
	33	#define MM_ISOTROPIC 1
	34	#define MM_ANISOTROPIC 2
	35	#define MM_LOMETRIC 3
	36	#define MM_HIMETRIC 4
	37	#define MM_TWIPS 5
	38	#define MM_POINTS 6
	39	#define MM_METRIC 7
	40
	41	//-----------------------------------------------------------------------------
	42	// wxDC
	43	//-----------------------------------------------------------------------------
	44
	45
	46	// MGL fwd declarations:
	47	class MGLDevCtx;
7bdc1879	48	class MGLRegion;
32b8ec41 VZ	49	struct font_t;
	50
	51	class WXDLLEXPORT wxDC : public wxDCBase
	52	{
	53	DECLARE_DYNAMIC_CLASS(wxDC)
	54
	55	public:
	56	wxDC();
	57	~wxDC();
	58
	59	// implement base class pure virtuals
	60	// ----------------------------------
	61
	62	virtual void Clear();
	63
	64	virtual bool StartDoc(const wxString& message);
	65	virtual void EndDoc();
	66
	67	virtual void StartPage();
	68	virtual void EndPage();
	69
	70	virtual void SetFont(const wxFont& font);
	71	virtual void SetPen(const wxPen& pen);
	72	virtual void SetBrush(const wxBrush& brush);
	73	virtual void SetBackground(const wxBrush& brush);
	74	virtual void SetBackgroundMode(int mode);
	75	virtual void SetPalette(const wxPalette& palette);
	76
	77	virtual void DestroyClippingRegion();
	78
	79	virtual wxCoord GetCharHeight() const;
	80	virtual wxCoord GetCharWidth() const;
	81	virtual void DoGetTextExtent(const wxString& string,
	82	wxCoord x, wxCoord y,
	83	wxCoord *descent = NULL,
	84	wxCoord *externalLeading = NULL,
	85	wxFont *theFont = NULL) const;
	86
	87	virtual bool CanDrawBitmap() const;
	88	virtual bool CanGetTextExtent() const;
	89	virtual int GetDepth() const;
	90	virtual wxSize GetPPI() const;
	91
	92	virtual void SetMapMode(int mode);
	93	virtual void SetUserScale(double x, double y);
	94	virtual void SetLogicalScale(double x, double y);
	95	virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
	96	virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
	97	virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
	98	virtual void SetLogicalFunction(int function);
	99
	100	// implementation from now on
	101	// --------------------------
	102
	103	virtual void ComputeScaleAndOrigin();
	104
	105	wxCoord XDEV2LOG(wxCoord x) const
	106	{
	107	wxCoord new_x = x - m_deviceOriginX;
	108	if (new_x > 0)
	109	return (wxCoord)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
	110	else
	111	return (wxCoord)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
	112	}
113	wxCoord XDEV2LOGREL(wxCoord x) const
114	{
115	if (x > 0)
116	return (wxCoord)((double)(x) / m_scaleX + 0.5);
117	else
118	return (wxCoord)((double)(x) / m_scaleX - 0.5);
119	}
120	wxCoord YDEV2LOG(wxCoord y) const
121	{
122	wxCoord new_y = y - m_deviceOriginY;
123	if (new_y > 0)
124	return (wxCoord)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
125	else
126	return (wxCoord)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
127	}
128	wxCoord YDEV2LOGREL(wxCoord y) const
129	{
130	if (y > 0)
131	return (wxCoord)((double)(y) / m_scaleY + 0.5);
132	else
133	return (wxCoord)((double)(y) / m_scaleY - 0.5);
134	}
135	wxCoord XLOG2DEV(wxCoord x) const
136	{
137	wxCoord new_x = x - m_logicalOriginX;
138	if (new_x > 0)
139	return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
140	else
141	return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
142	}
143	wxCoord XLOG2DEVREL(wxCoord x) const
144	{
145	if (x > 0)
146	return (wxCoord)((double)(x) * m_scaleX + 0.5);
147	else
148	return (wxCoord)((double)(x) * m_scaleX - 0.5);
149	}
150	wxCoord YLOG2DEV(wxCoord y) const
151	{
152	wxCoord new_y = y - m_logicalOriginY;
153	if (new_y > 0)
154	return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
155	else
156	return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
157	}
158	wxCoord YLOG2DEVREL(wxCoord y) const
159	{
160	if (y > 0)
161	return (wxCoord)((double)(y) * m_scaleY + 0.5);
162	else
163	return (wxCoord)((double)(y) * m_scaleY - 0.5);
164	}
165
166	MGLDevCtx *GetMGLDC() const { return m_MGLDC; }
167	void SetMGLDC(MGLDevCtx *mgldc, bool OwnsMGLDC = FALSE);
168
169	protected:
170	virtual void DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
171	int style = wxFLOOD_SURFACE);
172
173	virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
174
175	virtual void DoDrawPoint(wxCoord x, wxCoord y);
176	virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
177
178	virtual void DoDrawArc(wxCoord x1, wxCoord y1,
179	wxCoord x2, wxCoord y2,
180	wxCoord xc, wxCoord yc);
181	virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
182	double sa, double ea);
183
184	virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
185	virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
186	wxCoord width, wxCoord height,
187	double radius);
188	virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
189
190	virtual void DoCrossHair(wxCoord x, wxCoord y);
191
192	virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
193	virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
194	bool useMask = FALSE);
195
196	virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
197	virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
198	double angle);
199
200	virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
201	wxDC *source, wxCoord xsrc, wxCoord ysrc,
0cbff120	202	int rop = wxCOPY, bool useMask = FALSE, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
32b8ec41 VZ	203
	204	// this is gnarly - we can't even call this function DoSetClippingRegion()
	205	// because of virtual function hiding
	206	virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
	207	virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
	208	wxCoord width, wxCoord height);
	209	virtual void DoGetClippingRegion(wxCoord x, wxCoord y,
	210	wxCoord width, wxCoord height)
	211	{
	212	GetClippingBox(x, y, width, height);
	213	}
	214
	215	virtual void DoGetSize(int width, int height) const;
	216	virtual void DoGetSizeMM(int* width, int* height) const;
	217
	218	virtual void DoDrawLines(int n, wxPoint points[],
	219	wxCoord xoffset, wxCoord yoffset);
	220	virtual void DoDrawPolygon(int n, wxPoint points[],
	221	wxCoord xoffset, wxCoord yoffset,
	222	int fillStyle = wxODDEVEN_RULE);
	223
	224	// implementation from now on:
	225
	226	protected:
	227	// setup newly attached MGLDevCtx for wxDC's use
	228	// (does things like setting RGB blending mode for antialiased texts):
	229	void InitializeMGLDC();
	230
	231	// common part of DoDrawText() and DoDrawRotatedText()
	232	void DrawAnyText(const wxString& text, wxCoord x, wxCoord y);
	233
	234	// MGL uses pens as both wxPens and wxBrushes, so we have to
	235	// switch them as needed:
	236	void SelectPen();
	237	void SelectBrush();
	238	void SelectMGLStipplePen(int style);
	239	void SelectMGLFatPen(int style, int flag);
	240
	241	// Select m_font into m_MGLDC:
	242	bool SelectMGLFont();
	243
	244	// Convert wxWin logical function to MGL rop:
	245	int LogicalFunctionToMGLRop(int logFunc) const;
	246
	247	// Unified implementation of DrawIcon, DrawBitmap and Blit:
	248	void DoDrawSubBitmap(const wxBitmap &bmp,
	249	wxCoord x, wxCoord y, wxCoord w, wxCoord h,
	250	wxCoord destx, wxCoord desty, int rop, bool useMask);
	251
	252	// MGL DC class we use:
	253	MGLDevCtx *m_MGLDC;
	254	bool m_OwnsMGLDC:1;
	255
	256	// helper variables for SelectXXXX():
	257	bool m_penSelected;
	258	bool m_brushSelected;
	259	bool m_downloadedPatterns[2];
	260
	261	// MGL does not render lines with width>1 with endings centered
	262	// at given coords but with top left corner of the pen at them,
	263	// these offsets are used to correct it. They are computed by
	264	// SelectPen.
	265	int m_penOfsX, m_penOfsY;
	266
267	double m_mm_to_pix_x, m_mm_to_pix_y;
268
269	wxPalette m_oldPalette;
270
271	wxRegion m_currentClippingRegion;
ef344ff8	272	wxRegion m_globalClippingRegion;
32b8ec41 VZ	273
	274	// wxDC::Blit handles memoryDCs as special cases :(
	275	bool m_isMemDC;
	276
	277	font_t *m_mglFont;
	278	};
	279
	280	#endif
	281	// _WX_DC_H_