[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_

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

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

class WXDLLEXPORT wxDC;

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

#ifndef MM_TEXT
#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
#endif

//-----------------------------------------------------------------------------
// 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 bool 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 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)
65571936	8	// Licence: wxWindows licence
32b8ec41 VZ	9	/////////////////////////////////////////////////////////////////////////////
	10
	11	#ifndef _WX_DC_H_
	12	#define _WX_DC_H_
	13
32b8ec41	14	#include "wx/defs.h"
32b8ec41 VZ	15	#include "wx/region.h"
	16
	17	//-----------------------------------------------------------------------------
	18	// classes
	19	//-----------------------------------------------------------------------------
	20
	21	class WXDLLEXPORT wxDC;
	22
	23	//-----------------------------------------------------------------------------
	24	// constants
	25	//-----------------------------------------------------------------------------
	26
d2b1753d	27	#ifndef MM_TEXT
32b8ec41 VZ	28	#define MM_TEXT 0
	29	#define MM_ISOTROPIC 1
	30	#define MM_ANISOTROPIC 2
	31	#define MM_LOMETRIC 3
	32	#define MM_HIMETRIC 4
	33	#define MM_TWIPS 5
	34	#define MM_POINTS 6
	35	#define MM_METRIC 7
d2b1753d	36	#endif
32b8ec41 VZ	37
	38	//-----------------------------------------------------------------------------
	39	// wxDC
	40	//-----------------------------------------------------------------------------
	41
	42
	43	// MGL fwd declarations:
	44	class MGLDevCtx;
7bdc1879	45	class MGLRegion;
32b8ec41 VZ	46	struct font_t;
	47
	48	class WXDLLEXPORT wxDC : public wxDCBase
	49	{
	50	DECLARE_DYNAMIC_CLASS(wxDC)
	51
	52	public:
	53	wxDC();
	54	~wxDC();
	55
	56	// implement base class pure virtuals
	57	// ----------------------------------
	58
	59	virtual void Clear();
	60
	61	virtual bool StartDoc(const wxString& message);
	62	virtual void EndDoc();
	63
	64	virtual void StartPage();
	65	virtual void EndPage();
	66
	67	virtual void SetFont(const wxFont& font);
	68	virtual void SetPen(const wxPen& pen);
	69	virtual void SetBrush(const wxBrush& brush);
	70	virtual void SetBackground(const wxBrush& brush);
	71	virtual void SetBackgroundMode(int mode);
	72	virtual void SetPalette(const wxPalette& palette);
	73
	74	virtual void DestroyClippingRegion();
	75
	76	virtual wxCoord GetCharHeight() const;
	77	virtual wxCoord GetCharWidth() const;
	78	virtual void DoGetTextExtent(const wxString& string,
	79	wxCoord x, wxCoord y,
	80	wxCoord *descent = NULL,
	81	wxCoord *externalLeading = NULL,
	82	wxFont *theFont = NULL) const;
	83
	84	virtual bool CanDrawBitmap() const;
	85	virtual bool CanGetTextExtent() const;
	86	virtual int GetDepth() const;
	87	virtual wxSize GetPPI() const;
	88
	89	virtual void SetMapMode(int mode);
	90	virtual void SetUserScale(double x, double y);
	91	virtual void SetLogicalScale(double x, double y);
	92	virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
	93	virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
	94	virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
	95	virtual void SetLogicalFunction(int function);
	96
	97	// implementation from now on
	98	// --------------------------
c5789d15	99
32b8ec41 VZ	100	virtual void ComputeScaleAndOrigin();
	101
	102	wxCoord XDEV2LOG(wxCoord x) const
	103	{
	104	wxCoord new_x = x - m_deviceOriginX;
	105	if (new_x > 0)
	106	return (wxCoord)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
	107	else
	108	return (wxCoord)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
	109	}
	110	wxCoord XDEV2LOGREL(wxCoord x) const
	111	{
	112	if (x > 0)
	113	return (wxCoord)((double)(x) / m_scaleX + 0.5);
	114	else
	115	return (wxCoord)((double)(x) / m_scaleX - 0.5);
	116	}
	117	wxCoord YDEV2LOG(wxCoord y) const
	118	{
	119	wxCoord new_y = y - m_deviceOriginY;
	120	if (new_y > 0)
	121	return (wxCoord)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
	122	else
	123	return (wxCoord)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
	124	}
	125	wxCoord YDEV2LOGREL(wxCoord y) const
	126	{
	127	if (y > 0)
	128	return (wxCoord)((double)(y) / m_scaleY + 0.5);
	129	else
	130	return (wxCoord)((double)(y) / m_scaleY - 0.5);
	131	}
	132	wxCoord XLOG2DEV(wxCoord x) const
	133	{
	134	wxCoord new_x = x - m_logicalOriginX;
	135	if (new_x > 0)
	136	return (wxCoord)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
	137	else
	138	return (wxCoord)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
	139	}
	140	wxCoord XLOG2DEVREL(wxCoord x) const
	141	{
	142	if (x > 0)
	143	return (wxCoord)((double)(x) * m_scaleX + 0.5);
	144	else
	145	return (wxCoord)((double)(x) * m_scaleX - 0.5);
	146	}
	147	wxCoord YLOG2DEV(wxCoord y) const
	148	{
	149	wxCoord new_y = y - m_logicalOriginY;
	150	if (new_y > 0)
	151	return (wxCoord)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
	152	else
	153	return (wxCoord)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
	154	}
	155	wxCoord YLOG2DEVREL(wxCoord y) const
	156	{
	157	if (y > 0)
	158	return (wxCoord)((double)(y) * m_scaleY + 0.5);
	159	else
	160	return (wxCoord)((double)(y) * m_scaleY - 0.5);
	161	}
	162
	163	MGLDevCtx *GetMGLDC() const { return m_MGLDC; }
b1263dcf	164	void SetMGLDC(MGLDevCtx *mgldc, bool OwnsMGLDC = false);
32b8ec41 VZ	165
32b8ec41 VZ	166	protected:
387ebd3e	167	virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
32b8ec41 VZ	168	int style = wxFLOOD_SURFACE);
	169
	170	virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
	171
	172	virtual void DoDrawPoint(wxCoord x, wxCoord y);
	173	virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
	174
	175	virtual void DoDrawArc(wxCoord x1, wxCoord y1,
	176	wxCoord x2, wxCoord y2,
	177	wxCoord xc, wxCoord yc);
	178	virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
	179	double sa, double ea);
	180
	181	virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
	182	virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
	183	wxCoord width, wxCoord height,
	184	double radius);
	185	virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
	186
	187	virtual void DoCrossHair(wxCoord x, wxCoord y);
	188
	189	virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
	190	virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
b1263dcf	191	bool useMask = false);
32b8ec41 VZ	192
	193	virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
	194	virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
	195	double angle);
	196
	197	virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
	198	wxDC *source, wxCoord xsrc, wxCoord ysrc,
b1263dcf	199	int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
32b8ec41 VZ	200
	201	// this is gnarly - we can't even call this function DoSetClippingRegion()
	202	// because of virtual function hiding
	203	virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
	204	virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
	205	wxCoord width, wxCoord height);
32b8ec41 VZ	206
	207	virtual void DoGetSize(int width, int height) const;
	208	virtual void DoGetSizeMM(int* width, int* height) const;
	209
	210	virtual void DoDrawLines(int n, wxPoint points[],
	211	wxCoord xoffset, wxCoord yoffset);
	212	virtual void DoDrawPolygon(int n, wxPoint points[],
	213	wxCoord xoffset, wxCoord yoffset,
	214	int fillStyle = wxODDEVEN_RULE);
	215
	216	// implementation from now on:
	217
	218	protected:
	219	// setup newly attached MGLDevCtx for wxDC's use
	220	// (does things like setting RGB blending mode for antialiased texts):
	221	void InitializeMGLDC();
	222
	223	// common part of DoDrawText() and DoDrawRotatedText()
	224	void DrawAnyText(const wxString& text, wxCoord x, wxCoord y);
c5789d15	225
32b8ec41 VZ	226	// MGL uses pens as both wxPens and wxBrushes, so we have to
	227	// switch them as needed:
	228	void SelectPen();
	229	void SelectBrush();
	230	void SelectMGLStipplePen(int style);
	231	void SelectMGLFatPen(int style, int flag);
c5789d15	232
32b8ec41 VZ	233	// Select m_font into m_MGLDC:
32b8ec41 VZ	234	bool SelectMGLFont();
c5789d15	235
32b8ec41 VZ	236	// Convert wxWin logical function to MGL rop:
32b8ec41 VZ	237	int LogicalFunctionToMGLRop(int logFunc) const;
c5789d15	238
32b8ec41	239	// Unified implementation of DrawIcon, DrawBitmap and Blit:
c5789d15	240	void DoDrawSubBitmap(const wxBitmap &bmp,
32b8ec41 VZ	241	wxCoord x, wxCoord y, wxCoord w, wxCoord h,
	242	wxCoord destx, wxCoord desty, int rop, bool useMask);
	243
	244	// MGL DC class we use:
	245	MGLDevCtx *m_MGLDC;
	246	bool m_OwnsMGLDC:1;
c5789d15	247
32b8ec41 VZ	248	// helper variables for SelectXXXX():
	249	bool m_penSelected;
	250	bool m_brushSelected;
	251	bool m_downloadedPatterns[2];
	252
c5789d15	253	// MGL does not render lines with width>1 with endings centered
32b8ec41 VZ	254	// at given coords but with top left corner of the pen at them,
	255	// these offsets are used to correct it. They are computed by
	256	// SelectPen.
	257	int m_penOfsX, m_penOfsY;
	258
	259	double m_mm_to_pix_x, m_mm_to_pix_y;
c5789d15	260
32b8ec41	261	wxPalette m_oldPalette;
c5789d15	262
32b8ec41	263	wxRegion m_currentClippingRegion;
ef344ff8	264	wxRegion m_globalClippingRegion;
32b8ec41 VZ	265
	266	// wxDC::Blit handles memoryDCs as special cases :(
	267	bool m_isMemDC;
c5789d15	268
32b8ec41 VZ	269	font_t *m_mglFont;
	270	};
	271
	272	#endif
	273	// _WX_DC_H_