342 lines
12 KiB
C
342 lines
12 KiB
C
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/////////////////////////////////////////////////////////////////////////////
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// Name: dc.h
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// Purpose: wxDC class
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// Author: Julian Smart
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// Modified by:
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// Created: 01/02/97
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// RCS-ID: $Id$
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// Copyright: (c) Julian Smart and Markus Holzem
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// Licence: wxWindows license
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/////////////////////////////////////////////////////////////////////////////
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#ifndef __DCH__
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#define __DCH__
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#ifdef __GNUG__
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#pragma interface "dc.h"
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#endif
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#include "wx/pen.h"
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#include "wx/brush.h"
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#include "wx/icon.h"
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#include "wx/font.h"
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#include "wx/gdicmn.h"
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class WXDLLEXPORT wxDC: public wxObject
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{
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DECLARE_ABSTRACT_CLASS(wxDC)
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protected:
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public:
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wxDC(void);
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~wxDC(void);
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inline void wxDC::BeginDrawing(void) {}
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inline void wxDC::EndDrawing(void) {}
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virtual void FloodFill(long x1, long y1, wxColour *col, int style=wxFLOOD_SURFACE) ;
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virtual bool GetPixel(long x1, long y1, wxColour *col) const ;
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virtual void DrawLine(long x1, long y1, long x2, long y2);
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virtual void CrossHair(long x, long y) ;
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virtual void DrawArc(long x1,long y1,long x2,long y2,double xc, double yc);
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virtual void DrawEllipticArc (long x, long y, long w, long h, double sa, double ea);
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virtual void DrawPoint(long x, long y);
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virtual void DrawLines(int n, wxPoint points[], long xoffset = 0, long yoffset = 0);
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virtual void DrawPolygon(int n, wxPoint points[], long xoffset = 0, long yoffset = 0, int fillStyle=wxODDEVEN_RULE);
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virtual void DrawRectangle(long x, long y, long width, long height);
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virtual void DrawRoundedRectangle(long x, long y, long width, long height, double radius = 20.0);
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virtual void DrawEllipse(long x, long y, long width, long height);
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virtual void DrawIcon(const wxIcon& icon, long x, long y);
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virtual void Clear(void);
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virtual void SetFont(const wxFont& font);
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virtual void SetPen(const wxPen& pen);
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virtual void SetBrush(const wxBrush& brush);
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virtual void SetLogicalFunction(int function);
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virtual void SetBackground(const wxBrush& brush);
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virtual void SetBackgroundMode(int mode);
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virtual void SetClippingRegion(long x, long y, long width, long height);
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virtual void SetPalette(const wxPalette& palette);
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#if WXWIN_COMPATIBILITY
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virtual inline void SetColourMap(const wxPalette& palette) { SetPalette(palette); };
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#endif
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virtual void DestroyClippingRegion(void);
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virtual void DrawText(const wxString& text, long x, long y, bool use16bit = FALSE);
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virtual long GetCharHeight(void) const;
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virtual long GetCharWidth(void) const;
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virtual void GetTextExtent(const wxString& string, long *x, long *y,
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long *descent = NULL, long *externalLeading = NULL,
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wxFont *theFont = NULL, bool use16bit = FALSE) const;
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#if WXWIN_COMPATIBILITY
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void GetTextExtent(const wxString& string, float *x, float *y,
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float *descent = NULL, float *externalLeading = NULL,
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wxFont *theFont = NULL, bool use16bit = FALSE) const ;
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#endif
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// Size in device units
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virtual void GetSize(int* width, int* height) const;
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inline wxSize GetSize(void) const { int w, h; GetSize(&w, &h); return wxSize(w, h); }
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// Size in mm
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virtual void GetSizeMM(long* width, long* height) const ;
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// Compatibility
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#if WXWIN_COMPATIBILITY
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inline void GetSize(float* width, float* height) const { int w, h; GetSize(& w, & h); *width = w; *height = h; }
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inline void GetSizeMM(float *width, float *height) const { long w, h; GetSizeMM(& w, & h); *width = (float) w; *height = (float) h; }
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#endif
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virtual bool StartDoc(const wxString& message);
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virtual void EndDoc(void);
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virtual void StartPage(void);
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virtual void EndPage(void);
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virtual void SetMapMode(int mode);
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virtual void SetUserScale(double x, double y);
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virtual void SetSystemScale(double x, double y);
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virtual void SetLogicalOrigin(long x, long y);
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virtual void SetDeviceOrigin(long x, long y);
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// This group of functions does actual conversion
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// of the input, as you'd expect.
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long DeviceToLogicalX(long x) const;
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long DeviceToLogicalY(long y) const;
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long DeviceToLogicalXRel(long x) const;
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long DeviceToLogicalYRel(long y) const;
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long LogicalToDeviceX(long x) const;
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long LogicalToDeviceY(long y) const;
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long LogicalToDeviceXRel(long x) const;
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long LogicalToDeviceYRel(long y) const;
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// This group of functions may not do any conversion
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// if m_scaleGDI is TRUE, since the HDC does the
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// conversion automatically.
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// m_scaleGDI NOW OBSOLETE
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long ImplDeviceToLogicalX(long x) const;
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long ImplDeviceToLogicalY(long y) const;
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long ImplDeviceToLogicalXRel(long x) const;
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long ImplDeviceToLogicalYRel(long y) const;
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long ImplLogicalToDeviceX(long x) const;
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long ImplLogicalToDeviceY(long y) const;
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long ImplLogicalToDeviceXRel(long x) const;
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long ImplLogicalToDeviceYRel(long y) const;
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virtual bool Blit(long xdest, long ydest, long width, long height,
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wxDC *source, long xsrc, long ysrc, int rop = wxCOPY, bool useMask = FALSE);
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virtual bool CanDrawBitmap(void) const;
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virtual bool CanGetTextExtent(void) const;
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//
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// This function is intended to improves drawing, by avoiding to
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// repeatly call ::SetPen/::SetBrush. If set to FALSE, these functions
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// aren't called when calling ::DrawLine(),...
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// Please note that this is YOUR responsability to use it, and do it
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// only when you KNOWN that pen/brush isn't changed between 2 calls to
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// DrawLine,... !!!
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// Note also that in X, we don't test m_autoSetting on brushes, because they
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// modify Foreground, as pens. So, convention is:
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// - call your SetBrush(), THEN your SetPen, THEN AutoSetTools(FALSE)
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// - call DrawLine,...
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// [mainly coded for Windows]
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inline virtual void AutoSetTools(bool auto_setting) { m_autoSetting = auto_setting ; }
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inline virtual void DrawPoint(wxPoint& point) { DrawPoint(point.x, point.y); }
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virtual void DrawLines(wxList *list, long xoffset = 0, long yoffset = 0);
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virtual void DrawPolygon(wxList *list, long xoffset = 0, long yoffset = 0, int fillStyle=wxODDEVEN_RULE);
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#if USE_SPLINES
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// Splines
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// 3-point spline
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virtual void DrawSpline(long x1, long y1, long x2, long y2, long x3, long y3);
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// Any number of control points - a list of pointers to wxPoints
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virtual void DrawSpline(wxList *points);
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virtual void DrawSpline(int n, wxPoint points[]);
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#endif
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virtual void SetTextForeground(const wxColour& colour);
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virtual void SetTextBackground(const wxColour& colour);
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inline virtual bool Ok(void) const {return m_ok;};
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inline virtual int GetMapMode(void) const {return m_mappingMode;};
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inline virtual wxBrush *GetBackground(void) const { return (wxBrush*) &m_backgroundBrush ;}
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inline virtual wxBrush *GetBrush(void) const { return (wxBrush*) &m_brush ;}
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inline virtual wxFont *GetFont(void) const { return (wxFont*) &m_font ;}
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inline virtual int GetLogicalFunction(void) const { return m_logicalFunction ;}
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inline virtual wxPen *GetPen(void) const { return (wxPen*) &m_pen ;}
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inline virtual wxColour&GetTextBackground(void) const { return (wxColour&) m_textBackgroundColour ;}
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inline virtual wxColour&GetTextForeground(void) const { return (wxColour&) m_textForegroundColour ;}
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virtual void SetLogicalScale(double x, double y);
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virtual inline void GetUserScale(double* x, double *y) const { *x = m_userScaleX; *y = m_userScaleY; }
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virtual void CalcBoundingBox(long x, long y);
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// Get the final bounding box of the PostScript or Metafile picture.
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virtual inline long MinX(void) const { return m_minX; }
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virtual inline long MaxX(void) const { return m_maxX; }
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virtual inline long MinY(void) const { return m_minY; }
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virtual inline long MaxY(void) const { return m_maxY; }
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// Sometimes we need to override optimization, e.g.
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// if other software is drawing onto our surface and we
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// can't be sure of who's done what.
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virtual inline void SetOptimization(bool WXUNUSED(opt)) { }
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virtual inline bool GetOptimization(void) { return FALSE; }
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virtual void GetClippingBox(long *x,long *y,long *w,long *h) const ;
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virtual void SetRop(WXHDC cdc);
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virtual void DoClipping(WXHDC cdc);
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virtual void SelectOldObjects(WXHDC dc);
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inline wxWindow *GetWindow(void) const { return m_canvas; }
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inline void SetWindow(wxWindow *win) { m_canvas = win; }
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inline WXHDC GetHDC(void) const { return m_hDC; }
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inline void SetHDC(WXHDC dc, bool bOwnsDC = FALSE) { m_hDC = dc; m_bOwnsDC = bOwnsDC; }
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inline bool GetAutoSetting(void) const { return m_autoSetting; }
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// inline bool GetScaleGDI(void) const { return m_scaleGDI; }
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// inline void SetScaleGDI(bool flag) { m_scaleGDI = flag; }
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protected:
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bool m_colour;
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bool m_ok;
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bool m_clipping;
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bool m_isInteractive;
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// Coordinate system variables
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long m_logicalOriginX;
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long m_logicalOriginY;
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long m_deviceOriginX;
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long m_deviceOriginY;
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double m_logicalScaleX;
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double m_logicalScaleY;
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double m_userScaleX;
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double m_userScaleY;
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int m_mappingMode;
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long m_minX; // bounding box
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long m_minY;
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long m_maxX;
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long m_maxY;
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int m_logicalFunction;
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int m_backgroundMode;
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wxPen m_pen;
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wxBrush m_brush;
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wxBrush m_backgroundBrush;
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wxColour m_textForegroundColour;
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wxColour m_textBackgroundColour;
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wxFont m_font;
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wxPalette m_palette;
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bool m_autoSetting ;
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int m_clipX1;
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int m_clipY1;
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int m_clipX2;
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int m_clipY2;
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// bool m_dontDelete;
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int m_windowExtX;
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int m_windowExtY;
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double m_systemScaleX;
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double m_systemScaleY;
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wxWindow * m_canvas;
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wxBitmap m_selectedBitmap;
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wxString m_filename;
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// TRUE => DeleteDC() in dtor, FALSE => only ReleaseDC() it
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bool m_bOwnsDC;
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WXHDC m_hDC;
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int m_hDCCount;
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// Store all old GDI objects when do a SelectObject,
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// so we can select them back in (this unselecting user's
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// objects) so we can safely delete the DC.
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WXHBITMAP m_oldBitmap;
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WXHPEN m_oldPen;
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WXHBRUSH m_oldBrush;
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WXHFONT m_oldFont;
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WXHPALETTE m_oldPalette;
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// Stores scaling, translation, rotation
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// wxTransformMatrix m_transformMatrix;
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// Do we wish to scale GDI objects too, e.g. pen width?
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// bool m_scaleGDI;
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};
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// Logical to device
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// Absolute
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#define XLOG2DEV(x) ImplLogicalToDeviceX(x)
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#define YLOG2DEV(y) ImplLogicalToDeviceY(y)
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// Relative
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#define XLOG2DEVREL(x) ImplLogicalToDeviceXRel(x)
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#define YLOG2DEVREL(y) ImplLogicalToDeviceYRel(y)
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// Device to logical
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// Absolute
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#define XDEV2LOG(x) ImplDeviceToLogicalX(x)
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#define YDEV2LOG(y) ImplDeviceToLogicalY(y)
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// Relative
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#define XDEV2LOGREL(x) ImplDeviceToLogicalXRel(x)
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#define YDEV2LOGREL(y) ImplDeviceToLogicalYRel(y)
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/*
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* Have the same macros as for XView but not for every operation:
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* just for calculating window/viewport extent (a better way of scaling).
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*/
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// Logical to device
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// Absolute
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#define MS_XLOG2DEV(x) LogicalToDevice(x)
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#define MS_YLOG2DEV(y) LogicalToDevice(y)
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// Relative
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#define MS_XLOG2DEVREL(x) LogicalToDeviceXRel(x)
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#define MS_YLOG2DEVREL(y) LogicalToDeviceYRel(y)
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// Device to logical
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// Absolute
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#define MS_XDEV2LOG(x) DeviceToLogicalX(x)
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#define MS_YDEV2LOG(y) DeviceToLogicalY(y)
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// Relative
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#define MS_XDEV2LOGREL(x) DeviceToLogicalXRel(x)
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#define MS_YDEV2LOGREL(y) DeviceToLogicalYRel(y)
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#define MM_POINTS 7
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#define MM_METRIC 8
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extern int wxPageNumber;
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// Conversion
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#define METRIC_CONVERSION_CONSTANT 0.0393700787
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// Scaling factors for various unit conversions
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#define mm2inches (METRIC_CONVERSION_CONSTANT)
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#define inches2mm (1/METRIC_CONVERSION_CONSTANT)
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#define mm2twips (METRIC_CONVERSION_CONSTANT*1440)
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#define twips2mm (1/(METRIC_CONVERSION_CONSTANT*1440))
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#define mm2pt (METRIC_CONVERSION_CONSTANT*72)
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#define pt2mm (1/(METRIC_CONVERSION_CONSTANT*72))
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#define wx_round(a) (int)((a)+.5)
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#endif
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// __DCH__
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