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wxWidgets/include/wx/gtk/dc.h
Karsten Ballüder c801d85f15 Initial revision 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1998-05-20 14:01:55 +00:00

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/////////////////////////////////////////////////////////////////////////////
// Name: dc.h
// Purpose:
// Author: Robert Roebling
// Created: 01/02/97
// Id:
// Copyright: (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef __GTKDCH__
#define __GTKDCH__
#ifdef __GNUG__
#pragma interface
#endif
#include "wx/defs.h"
#include "wx/object.h"
#include "wx/gdicmn.h"
#include "wx/pen.h"
#include "wx/brush.h"
#include "wx/icon.h"
#include "wx/font.h"
#include "wx/gdicmn.h"
//-----------------------------------------------------------------------------
// classes
//-----------------------------------------------------------------------------
class 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
//-----------------------------------------------------------------------------
// global variables
//-----------------------------------------------------------------------------
extern int wxPageNumber;
//-----------------------------------------------------------------------------
// wxDC
//-----------------------------------------------------------------------------
class wxDC: public wxObject
{
DECLARE_ABSTRACT_CLASS(wxDC)
public:
wxDC(void);
~wxDC(void);
void BeginDrawing(void) {};
void EndDrawing(void) {};
virtual bool Ok(void) const { return m_ok; };
virtual void FloodFill( long x1, long y1, wxColour *col, int style=wxFLOOD_SURFACE ) = 0;
virtual bool GetPixel( long x1, long y1, wxColour *col ) const = 0;
virtual void DrawLine( long x1, long y1, long x2, long y2 ) = 0;
virtual void CrossHair( long x, long y ) = 0;
virtual void DrawArc( long x1, long y1, long x2, long y2, double xc, double yc );
virtual void DrawEllipticArc( long x, long y, long width, long height, double sa, double ea ) = 0;
virtual void DrawPoint( long x, long y ) = 0;
virtual void DrawPoint( wxPoint& point );
virtual void DrawLines( int n, wxPoint points[], long xoffset = 0, long yoffset = 0 ) = 0;
virtual void DrawLines( wxList *points, long xoffset = 0, long yoffset = 0 );
virtual void DrawPolygon( int n, wxPoint points[], long xoffset = 0, long yoffset = 0,
int fillStyle=wxODDEVEN_RULE ) = 0;
virtual void DrawPolygon( wxList *lines, long xoffset = 0, long yoffset = 0,
int fillStyle=wxODDEVEN_RULE );
virtual void DrawRectangle( long x, long y, long width, long height ) = 0;
virtual void DrawRoundedRectangle( long x, long y, long width, long height, double radius = 20.0 ) = 0;
virtual void DrawEllipse( long x, long y, long width, long height ) = 0;
virtual void DrawSpline( long x1, long y1, long x2, long y2, long x3, long y3 );
virtual void DrawSpline( wxList *points );
virtual void DrawSpline( int n, wxPoint points[] );
virtual bool CanDrawBitmap(void) const = 0;
virtual void DrawIcon( const wxIcon &icon, long x, long y, bool useMask=FALSE );
void DrawBitmap( const wxBitmap &bmp, long x, long y, bool useMask=FALSE )
{ DrawIcon( *((wxIcon*)(&bmp)), x, y, useMask ); }
virtual bool Blit( long xdest, long ydest, long width, long height,
wxDC *source, long xsrc, long ysrc, int logical_func = wxCOPY, bool useMask=FALSE ) = 0;
virtual void DrawText( const wxString &text, long x, long y, bool use16 = FALSE ) = 0;
virtual bool CanGetTextExtent(void) const = 0;
virtual void GetTextExtent( const wxString &string, long *width, long *height,
long *descent = NULL, long *externalLeading = NULL,
wxFont *theFont = NULL, bool use16 = FALSE ) = 0;
virtual long GetCharWidth(void) = 0;
virtual long GetCharHeight(void) = 0;
virtual void Clear(void) = 0;
virtual void SetFont( const wxFont &font ) = 0;
virtual wxFont *GetFont(void) { return &m_font; };
virtual void SetPen( const wxPen &pen ) = 0;
virtual wxPen *GetPen(void) { return &m_pen; };
virtual void SetBrush( const wxBrush &brush ) = 0;
virtual wxBrush *GetBrush(void) { return &m_brush; };
virtual void SetLogicalFunction( int function ) = 0;
virtual int GetLogicalFunction(void) { return m_logicalFunction; };
virtual void SetTextForeground( const wxColour &col );
virtual void SetTextBackground( const wxColour &col );
virtual wxColour& GetTextBackground(void) const { return (wxColour&)m_textBackgroundColour; };
virtual wxColour& GetTextForeground(void) const { return (wxColour&)m_textForegroundColour; };
virtual void SetBackgroundMode( int mode ) = 0;
virtual int GetBackgroundMode(void) { return m_backgroundMode; };
virtual void SetPalette( const wxPalette& palette ) = 0;
void SetColourMap( const wxPalette& palette ) { SetPalette(palette); };
// the first two must be overridden and called
virtual void SetClippingRegion( long x, long y, long width, long height );
virtual void DestroyClippingRegion(void);
virtual void GetClippingBox( long *x, long *y, long *width, long *height ) const;
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; }
virtual void GetSize( int* width, int* height ) const;
inline wxSize GetSize(void) const { int w, h; GetSize(&w, &h); return wxSize(w, h); }
virtual void GetSizeMM( long* width, long* height ) const;
virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return TRUE; };
virtual void EndDoc(void) {};
virtual void StartPage(void) {};
virtual void EndPage(void) {};
virtual void SetMapMode( int mode );
virtual int GetMapMode(void) const { return m_mappingMode; };
virtual void SetUserScale( double x, double y );
virtual void GetUserScale( double *x, double *y );
virtual void SetLogicalScale( double x, double y );
virtual void GetLogicalScale( double *x, double *y );
virtual void SetLogicalOrigin( long x, long y );
virtual void GetLogicalOrigin( long *x, long *y );
virtual void SetDeviceOrigin( long x, long y );
virtual void GetDeviceOrigin( long *x, long *y );
virtual void SetInternalDeviceOrigin( long x, long y );
virtual void GetInternalDeviceOrigin( long *x, long *y );
virtual void SetAxisOrientation( bool xLeftRight, bool yBottomUp );
virtual void SetOptimization( bool WXUNUSED(optimize) ) {};
virtual bool GetOptimization(void) { return m_optimize; };
virtual long DeviceToLogicalX(long x) const;
virtual long DeviceToLogicalY(long y) const;
virtual long DeviceToLogicalXRel(long x) const;
virtual long DeviceToLogicalYRel(long y) const;
virtual long LogicalToDeviceX(long x) const;
virtual long LogicalToDeviceY(long y) const;
virtual long LogicalToDeviceXRel(long x) const;
virtual long LogicalToDeviceYRel(long y) const;
public:
void CalcBoundingBox( long x, long y );
void ComputeScaleAndOrigin(void);
long XDEV2LOG(long x) const
{
long new_x = x - m_deviceOriginX;
if (new_x > 0)
return (long)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
else
return (long)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
}
long XDEV2LOGREL(long x) const
{
if (x > 0)
return (long)((double)(x) / m_scaleX + 0.5);
else
return (long)((double)(x) / m_scaleX - 0.5);
}
long YDEV2LOG(long y) const
{
long new_y = y - m_deviceOriginY;
if (new_y > 0)
return (long)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
else
return (long)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
}
long YDEV2LOGREL(long y) const
{
if (y > 0)
return (long)((double)(y) / m_scaleY + 0.5);
else
return (long)((double)(y) / m_scaleY - 0.5);
}
long XLOG2DEV(long x) const
{
long new_x = x - m_logicalOriginX;
if (new_x > 0)
return (long)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
else
return (long)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
}
long XLOG2DEVREL(long x) const
{
if (x > 0)
return (long)((double)(x) * m_scaleX + 0.5);
else
return (long)((double)(x) * m_scaleX - 0.5);
}
long YLOG2DEV(long y) const
{
long new_y = y - m_logicalOriginY;
if (new_y > 0)
return (long)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
else
return (long)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
}
long YLOG2DEVREL(long y) const
{
if (y > 0)
return (long)((double)(y) * m_scaleY + 0.5);
else
return (long)((double)(y) * m_scaleY - 0.5);
}
virtual void DrawOpenSpline( wxList *points ) = 0;
public:
bool m_ok;
bool m_colour;
// not sure, what these mean
bool m_clipping; // Is clipping on right now ?
bool m_isInteractive; // Is GetPixel possible ?
bool m_autoSetting; // wxMSW only ?
bool m_dontDelete; // wxMSW only ?
bool m_optimize; // wxMSW only ?
wxString m_filename; // Not sure where this belongs.
wxPen m_pen;
wxBrush m_brush;
wxBrush m_backgroundBrush;
wxColour m_textForegroundColour;
wxColour m_textBackgroundColour;
wxFont m_font;
int m_logicalFunction;
int m_backgroundMode;
int m_textAlignment; // gone in wxWin 2.0 ?
int m_mappingMode;
// not sure what for, but what is a mm on a screen you don't know the size of?
double m_mm_to_pix_x,m_mm_to_pix_y;
long m_internalDeviceOriginX,m_internalDeviceOriginY; // If un-scrolled is non-zero or
// d.o. changes with scrolling.
// Set using SetInternalDeviceOrigin().
long m_externalDeviceOriginX,m_externalDeviceOriginY; // To be set by external classes
// such as wxScrolledWindow
// using SetDeviceOrigin()
long m_deviceOriginX,m_deviceOriginY; // Sum of the two above.
long m_logicalOriginX,m_logicalOriginY; // User defined.
double m_scaleX,m_scaleY;
double m_logicalScaleX,m_logicalScaleY;
double m_userScaleX,m_userScaleY;
long m_signX,m_signY;
bool m_needComputeScaleX,m_needComputeScaleY; // not yet used
float m_scaleFactor; // wxPSDC wants to have this. Will disappear.
long m_clipX1,m_clipY1,m_clipX2,m_clipY2;
long m_minX,m_maxX,m_minY,m_maxY;
};
#endif // __GTKDCH__
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