wxWidgets/include/wx/msw/dc.h
1999-01-08 14:30:22 +00:00

446 lines
14 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: dc.h
// Purpose: wxDC class
// Author: Julian Smart
// Modified by:
// Created: 01/02/97
// RCS-ID: $Id$
// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_DC_H_
#define _WX_DC_H_
#ifdef __GNUG__
#pragma interface "dc.h"
#endif
#include "wx/pen.h"
#include "wx/brush.h"
#include "wx/icon.h"
#include "wx/font.h"
#include "wx/gdicmn.h"
#include "wx/window.h"
// Clash with Windows header files
#ifdef StartDoc
#undef StartDoc
#endif
#ifdef DrawText
#undef DrawText
#endif
#ifdef GetCharWidth
#undef GetCharWidth
#endif
class WXDLLEXPORT wxDC: public wxObject
{
DECLARE_ABSTRACT_CLASS(wxDC)
protected:
public:
wxDC(void);
~wxDC(void);
#ifdef WX_COMP_INLINE_NO_CLASS
inline void BeginDrawing(void) {}
inline void EndDrawing(void) {}
#else
inline void wxDC::BeginDrawing(void) {}
inline void wxDC::EndDrawing(void) {}
#endif
virtual void FloodFill(long x1, long y1, const wxColour& col, int style=wxFLOOD_SURFACE) ;
inline void FloodFill(const wxPoint& pt, const wxColour& col, int style=wxFLOOD_SURFACE)
{
FloodFill(pt.x, pt.y, col, style);
}
virtual bool GetPixel(long x1, long y1, wxColour *col) const ;
inline bool GetPixel(const wxPoint& pt, wxColour *col) const
{
return GetPixel(pt.x, pt.y, col);
}
virtual void DrawLine(long x1, long y1, long x2, long y2);
inline void DrawLine(const wxPoint& pt1, const wxPoint& pt2)
{
DrawLine(pt1.x, pt1.y, pt2.x, pt2.y);
}
virtual void CrossHair(long x, long y) ;
inline void CrossHair(const wxPoint& pt)
{
CrossHair(pt.x, pt.y);
}
virtual void DrawArc(long x1,long y1,long x2,long y2,long xc, long yc);
inline void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre)
{
DrawArc(pt1.x, pt1.y, pt2.x, pt2.y, centre.x, centre.y);
}
virtual void DrawEllipticArc (long x, long y, long w, long h, double sa, double ea);
virtual void DrawEllipticArc (const wxPoint& pt, const wxSize& sz, double sa, double ea)
{
DrawEllipticArc(pt.x, pt.y, sz.x, sz.y, sa, ea);
}
virtual void DrawPoint(long x, long y);
inline void DrawPoint(const wxPoint& pt)
{
DrawPoint(pt.x, pt.y);
}
virtual void DrawLines(int n, wxPoint points[], long xoffset = 0, long yoffset = 0);
virtual void DrawPolygon(int n, wxPoint points[], long xoffset = 0, long yoffset = 0, int fillStyle=wxODDEVEN_RULE);
virtual void DrawRectangle(long x, long y, long width, long height);
inline void DrawRectangle(const wxPoint& pt, const wxSize& sz)
{
DrawRectangle(pt.x, pt.y, sz.x, sz.y);
}
inline void DrawRectangle(const wxRect& rect)
{
DrawRectangle(rect.x, rect.y, rect.width, rect.height);
}
virtual void DrawRoundedRectangle(long x, long y, long width, long height, double radius = 20.0);
inline void DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz, double radius = 20.0)
{
DrawRoundedRectangle(pt.x, pt.y, sz.x, sz.y, radius);
}
inline void DrawRoundedRectangle(const wxRect& rect, double radius = 20.0)
{
DrawRoundedRectangle(rect.x, rect.y, rect.width, rect.height, radius);
}
virtual void DrawEllipse(long x, long y, long width, long height);
inline void DrawEllipse(const wxPoint& pt, const wxSize& sz)
{
DrawEllipse(pt.x, pt.y, sz.x, sz.y);
}
inline void DrawEllipse(const wxRect& rect)
{
DrawEllipse(rect.x, rect.y, rect.width, rect.height);
}
virtual void DrawIcon(const wxIcon& icon, long x, long y);
inline void DrawIcon(const wxIcon& icon, const wxPoint& pt)
{
DrawIcon(icon, pt.x, pt.y);
}
virtual void DrawBitmap( const wxBitmap &bmp, long x, long y, bool useMask=FALSE );
inline void DrawPoint(wxPoint& point) { DrawPoint(point.x, point.y); }
virtual void DrawLines(wxList *list, long xoffset = 0, long yoffset = 0);
virtual void DrawPolygon(wxList *list, long xoffset = 0, long yoffset = 0, int fillStyle=wxODDEVEN_RULE);
virtual void DrawText(const wxString& text, long x, long y, bool use16bit = FALSE);
inline void DrawText(const wxString& text, const wxPoint& pt, bool use16bit = FALSE)
{
DrawText(text, pt.x, pt.y, use16bit);
}
virtual bool Blit(long xdest, long ydest, long width, long height,
wxDC *source, long xsrc, long ysrc, int rop = wxCOPY, bool useMask = FALSE);
inline bool Blit(const wxPoint& destPt, const wxSize& sz,
wxDC *source, const wxPoint& srcPt, int rop = wxCOPY, bool useMask = FALSE)
{
return Blit(destPt.x, destPt.y, sz.x, sz.y, source, srcPt.x, srcPt.y, rop, useMask);
}
#if wxUSE_SPLINES
// Splines
// 3-point spline
virtual void DrawSpline(long x1, long y1, long x2, long y2, long x3, long y3);
// Any number of control points - a list of pointers to wxPoints
virtual void DrawSpline(wxList *points);
virtual void DrawSpline(int n, wxPoint points[]);
#endif
virtual void Clear(void);
virtual void SetFont(const wxFont& font);
virtual void SetPen(const wxPen& pen);
virtual void SetBrush(const wxBrush& brush);
virtual void SetLogicalFunction(int function);
virtual void SetBackground(const wxBrush& brush);
virtual void SetBackgroundMode(int mode);
virtual void SetClippingRegion(long x, long y, long width, long height);
inline void SetClippingRegion(const wxPoint& pt, const wxSize& sz)
{
SetClippingRegion(pt.x, pt.y, sz.x, sz.y);
}
inline void SetClippingRegion(const wxRect& rect)
{
SetClippingRegion(rect.x, rect.y, rect.width, rect.height);
}
virtual void SetClippingRegion(const wxRegion& region);
virtual void SetPalette(const wxPalette& palette);
#if WXWIN_COMPATIBILITY
virtual inline void SetColourMap(const wxPalette& palette) { SetPalette(palette); };
#endif
virtual void DestroyClippingRegion(void);
virtual long GetCharHeight(void) const;
virtual long GetCharWidth(void) const;
virtual void GetTextExtent(const wxString& string, long *x, long *y,
long *descent = NULL, long *externalLeading = NULL,
wxFont *theFont = NULL, bool use16bit = FALSE) const;
#if WXWIN_COMPATIBILITY
void GetTextExtent(const wxString& string, float *x, float *y,
float *descent = NULL, float *externalLeading = NULL,
wxFont *theFont = NULL, bool use16bit = FALSE) const ;
#endif
// Size in device units
virtual void GetSize(int* width, int* height) const;
inline wxSize GetSize(void) const { int w, h; GetSize(&w, &h); return wxSize(w, h); }
// Size in mm
virtual void GetSizeMM(long* width, long* height) const ;
// Compatibility
#if WXWIN_COMPATIBILITY
inline void GetSize(float* width, float* height) const { int w, h; GetSize(& w, & h); *width = w; *height = h; }
inline void GetSizeMM(float *width, float *height) const { long w, h; GetSizeMM(& w, & h); *width = (float) w; *height = (float) h; }
#endif
virtual bool StartDoc(const wxString& message);
virtual void EndDoc(void);
virtual void StartPage(void);
virtual void EndPage(void);
virtual void SetMapMode(int mode);
virtual void SetUserScale(double x, double y);
virtual void SetSystemScale(double x, double y);
virtual void SetLogicalOrigin(long x, long y);
virtual void SetDeviceOrigin(long x, long y);
virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
// This group of functions does actual conversion
// of the input, as you'd expect.
long DeviceToLogicalX(long x) const;
long DeviceToLogicalY(long y) const;
long DeviceToLogicalXRel(long x) const;
long DeviceToLogicalYRel(long y) const;
long LogicalToDeviceX(long x) const;
long LogicalToDeviceY(long y) const;
long LogicalToDeviceXRel(long x) const;
long LogicalToDeviceYRel(long y) const;
// This group of functions may not do any conversion
// if m_scaleGDI is TRUE, since the HDC does the
// conversion automatically.
// m_scaleGDI NOW OBSOLETE
long ImplDeviceToLogicalX(long x) const;
long ImplDeviceToLogicalY(long y) const;
long ImplDeviceToLogicalXRel(long x) const;
long ImplDeviceToLogicalYRel(long y) const;
long ImplLogicalToDeviceX(long x) const;
long ImplLogicalToDeviceY(long y) const;
long ImplLogicalToDeviceXRel(long x) const;
long ImplLogicalToDeviceYRel(long y) const;
virtual bool CanDrawBitmap(void) const;
virtual bool CanGetTextExtent(void) const;
virtual void SetTextForeground(const wxColour& colour);
virtual void SetTextBackground(const wxColour& colour);
inline virtual bool Ok(void) const {return m_ok;};
inline virtual int GetMapMode(void) const {return m_mappingMode;};
inline virtual wxBrush& GetBackground(void) const { return (wxBrush&) m_backgroundBrush ;}
inline virtual wxBrush& GetBrush(void) const { return (wxBrush&) m_brush ;}
inline virtual wxFont& GetFont(void) const { return (wxFont&) m_font ;}
inline virtual int GetLogicalFunction(void) const { return m_logicalFunction ;}
inline virtual wxPen& GetPen(void) const { return (wxPen&) m_pen ;}
inline virtual wxColour&GetTextBackground(void) const { return (wxColour&) m_textBackgroundColour ;}
inline virtual wxColour&GetTextForeground(void) const { return (wxColour&) m_textForegroundColour ;}
virtual void SetLogicalScale(double x, double y);
virtual inline void GetUserScale(double* x, double *y) const { *x = m_userScaleX; *y = m_userScaleY; }
virtual void CalcBoundingBox(long x, long y);
// Get the final bounding box of the PostScript or Metafile picture.
virtual inline long MinX(void) const { return m_minX; }
virtual inline long MaxX(void) const { return m_maxX; }
virtual inline long MinY(void) const { return m_minY; }
virtual inline long MaxY(void) const { return m_maxY; }
// Sometimes we need to override optimization, e.g.
// if other software is drawing onto our surface and we
// can't be sure of who's done what.
virtual inline void SetOptimization(bool WXUNUSED(opt)) { }
virtual inline bool GetOptimization(void) { return FALSE; }
virtual void GetClippingBox(long *x,long *y,long *w,long *h) const ;
inline void GetClippingBox(wxRect& rect) const
{
long x, y, w, h;
GetClippingBox(&x, &y, &w, &h); rect.x = x; rect.y = y; rect.width = w; rect.height = h;
}
// This should probably be made available on other platforms
#ifdef WX_COMP_INLINE_NO_CLASS
int GetDepth(void) const ;
#else
int wxDC::GetDepth(void) const ;
#endif
// Implementation
virtual void SetRop(WXHDC cdc);
virtual void DoClipping(WXHDC cdc);
virtual void SelectOldObjects(WXHDC dc);
inline wxWindow *GetWindow(void) const { return m_canvas; }
inline void SetWindow(wxWindow *win) { m_canvas = win; }
inline WXHDC GetHDC(void) const { return m_hDC; }
inline void SetHDC(WXHDC dc, bool bOwnsDC = FALSE) { m_hDC = dc; m_bOwnsDC = bOwnsDC; }
protected:
bool m_colour;
bool m_ok;
bool m_clipping;
bool m_isInteractive;
// Coordinate system variables
long m_logicalOriginX;
long m_logicalOriginY;
long m_deviceOriginX;
long m_deviceOriginY;
double m_logicalScaleX;
double m_logicalScaleY;
double m_userScaleX;
double m_userScaleY;
int m_signX; // Used by SetAxisOrientation() to
int m_signY; // invert the axes
int m_mappingMode;
long m_minX; // bounding box
long m_minY;
long m_maxX;
long m_maxY;
int m_logicalFunction;
int m_backgroundMode;
wxPen m_pen;
wxBrush m_brush;
wxBrush m_backgroundBrush;
wxColour m_textForegroundColour;
wxColour m_textBackgroundColour;
wxFont m_font;
wxPalette m_palette;
int m_clipX1;
int m_clipY1;
int m_clipX2;
int m_clipY2;
// bool m_dontDelete;
int m_windowExtX;
int m_windowExtY;
double m_systemScaleX;
double m_systemScaleY;
wxWindow * m_canvas;
wxBitmap m_selectedBitmap;
wxString m_filename;
// TRUE => DeleteDC() in dtor, FALSE => only ReleaseDC() it
bool m_bOwnsDC;
WXHDC m_hDC;
int m_hDCCount;
// Store all old GDI objects when do a SelectObject,
// so we can select them back in (this unselecting user's
// objects) so we can safely delete the DC.
WXHBITMAP m_oldBitmap;
WXHPEN m_oldPen;
WXHBRUSH m_oldBrush;
WXHFONT m_oldFont;
WXHPALETTE m_oldPalette;
// Stores scaling, translation, rotation
// wxTransformMatrix m_transformMatrix;
// Do we wish to scale GDI objects too, e.g. pen width?
// bool m_scaleGDI;
};
// Logical to device
// Absolute
#define XLOG2DEV(x) ImplLogicalToDeviceX(x)
#define YLOG2DEV(y) ImplLogicalToDeviceY(y)
// Relative
#define XLOG2DEVREL(x) ImplLogicalToDeviceXRel(x)
#define YLOG2DEVREL(y) ImplLogicalToDeviceYRel(y)
// Device to logical
// Absolute
#define XDEV2LOG(x) ImplDeviceToLogicalX(x)
#define YDEV2LOG(y) ImplDeviceToLogicalY(y)
// Relative
#define XDEV2LOGREL(x) ImplDeviceToLogicalXRel(x)
#define YDEV2LOGREL(y) ImplDeviceToLogicalYRel(y)
/*
* Have the same macros as for XView but not for every operation:
* just for calculating window/viewport extent (a better way of scaling).
*/
// Logical to device
// Absolute
#define MS_XLOG2DEV(x) LogicalToDevice(x)
#define MS_YLOG2DEV(y) LogicalToDevice(y)
// Relative
#define MS_XLOG2DEVREL(x) LogicalToDeviceXRel(x)
#define MS_YLOG2DEVREL(y) LogicalToDeviceYRel(y)
// Device to logical
// Absolute
#define MS_XDEV2LOG(x) DeviceToLogicalX(x)
#define MS_YDEV2LOG(y) DeviceToLogicalY(y)
// Relative
#define MS_XDEV2LOGREL(x) DeviceToLogicalXRel(x)
#define MS_YDEV2LOGREL(y) DeviceToLogicalYRel(y)
#define MM_POINTS 7
#define MM_METRIC 8
extern int wxPageNumber;
// Conversion
#define METRIC_CONVERSION_CONSTANT 0.0393700787
// Scaling factors for various unit conversions
#define mm2inches (METRIC_CONVERSION_CONSTANT)
#define inches2mm (1/METRIC_CONVERSION_CONSTANT)
#define mm2twips (METRIC_CONVERSION_CONSTANT*1440)
#define twips2mm (1/(METRIC_CONVERSION_CONSTANT*1440))
#define mm2pt (METRIC_CONVERSION_CONSTANT*72)
#define pt2mm (1/(METRIC_CONVERSION_CONSTANT*72))
#define wx_round(a) (int)((a)+.5)
#endif
// _WX_DC_H_