04ab8b6ddf
and thus removed all the duplicated code in all wxDC classes. Problematic is that wxSVGFileDC and wxPostscriptDC inherit from wxDC and therefore include platform specific code (also before this change) so I chose to override all SetLogicalOrigin() etc. methods in these classes and call their wxDCBase methods thereby circumventing the platform dependent code. I'm afraid the Mac code will require updating, too. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45752 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
299 lines
11 KiB
C++
299 lines
11 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: dc.h
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// Purpose: wxDC class
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// Author: Stefan Csomor
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// Modified by:
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// Created: 1998-01-01
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// RCS-ID: $Id$
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// Copyright: (c) Stefan Csomor
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_DC_H_
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#define _WX_DC_H_
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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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//-----------------------------------------------------------------------------
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// constants
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//-----------------------------------------------------------------------------
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#ifndef MM_TEXT
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#define MM_TEXT 0
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#define MM_ISOTROPIC 1
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#define MM_ANISOTROPIC 2
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#define MM_LOMETRIC 3
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#define MM_HIMETRIC 4
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#define MM_TWIPS 5
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#define MM_POINTS 6
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#define MM_METRIC 7
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#endif
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class wxMacPortStateHelper;
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#if !wxUSE_GRAPHICS_CONTEXT
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class WXDLLEXPORT wxGraphicPath
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{
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public :
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virtual ~wxGraphicPath() {}
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virtual void MoveToPoint( wxCoord x1, wxCoord y1 ) = 0;
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virtual void AddLineToPoint( wxCoord x1, wxCoord y1 ) = 0;
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virtual void AddQuadCurveToPoint( wxCoord cx1, wxCoord cy1, wxCoord x1, wxCoord y1 ) = 0;
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virtual void AddRectangle( wxCoord x, wxCoord y, wxCoord w, wxCoord h ) = 0;
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virtual void AddCircle( wxCoord x, wxCoord y, wxCoord r ) = 0;
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// draws a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1)
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virtual void AddArcToPoint( wxCoord x1, wxCoord y1 , wxCoord x2, wxCoord y2, wxCoord r ) = 0 ;
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virtual void AddArc( wxCoord x, wxCoord y, wxCoord r, double startAngle, double endAngle, bool clockwise ) = 0 ;
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virtual void CloseSubpath() = 0;
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};
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class WXDLLEXPORT wxGraphicContext
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{
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public:
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virtual ~wxGraphicContext() {}
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virtual wxGraphicPath * CreatePath() = 0;
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virtual void PushState() = 0 ;
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virtual void PopState() = 0 ;
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virtual void Clip( const wxRegion ®ion ) = 0;
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virtual void SetPen( const wxPen &pen ) = 0;
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virtual void SetBrush( const wxBrush &brush ) = 0;
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virtual void SetFont( const wxFont &font ) = 0 ;
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virtual void SetTextColor( const wxColour &col ) = 0 ;
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virtual void StrokePath( const wxGraphicPath *path ) = 0;
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virtual void DrawPath( const wxGraphicPath *path, int fillStyle = wxWINDING_RULE ) = 0;
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virtual void FillPath( const wxGraphicPath *path, const wxColor &fillColor, int fillStyle = wxWINDING_RULE ) = 0;
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virtual void DrawBitmap( const wxBitmap &bmp, wxCoord x, wxCoord y, wxCoord w, wxCoord h ) = 0 ;
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virtual void DrawIcon( const wxIcon &icon, wxCoord x, wxCoord y, wxCoord w, wxCoord h ) = 0 ;
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virtual void DrawText( const wxString &str, wxCoord x, wxCoord y, double angle ) = 0 ;
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virtual void GetTextExtent( const wxString &text, wxCoord *width, wxCoord *height,
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wxCoord *descent, wxCoord *externalLeading ) const = 0 ;
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virtual void GetPartialTextExtents(const wxString& text, wxArrayInt& widths) const = 0 ;
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virtual void Translate( wxCoord dx , wxCoord dy ) = 0 ;
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virtual void Scale( wxCoord xScale , wxCoord yScale ) = 0 ;
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};
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class WXDLLEXPORT wxDC: public wxDCBase
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{
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DECLARE_DYNAMIC_CLASS(wxDC)
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DECLARE_NO_COPY_CLASS(wxDC)
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public:
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wxDC();
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virtual ~wxDC();
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// implement base class pure virtuals
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// ----------------------------------
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virtual void Clear();
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virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return true; }
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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 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 SetBackground(const wxBrush& brush);
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virtual void SetBackgroundMode(int mode);
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virtual void SetPalette(const wxPalette& palette);
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virtual void DestroyClippingRegion();
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virtual wxCoord GetCharHeight() const;
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virtual wxCoord GetCharWidth() const;
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virtual bool CanDrawBitmap() const;
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virtual bool CanGetTextExtent() const;
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virtual int GetDepth() const;
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virtual wxSize GetPPI() const;
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virtual void SetLogicalFunction(int function);
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virtual void SetTextForeground(const wxColour& colour);
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virtual void SetTextBackground(const wxColour& colour);
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public:
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wxCoord XDEV2LOG(wxCoord x) const { return DeviceToLogicalX( x ); }
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wxCoord XDEV2LOGREL(wxCoord x) const { return DeviceToLogicalXRel( x ); }
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wxCoord YDEV2LOG(wxCoord y) const { return DeviceToLogicalY( y ); }
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wxCoord YDEV2LOGREL(wxCoord y) const { return DeviceToLogicalYRel( y ); }
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wxCoord XLOG2DEV(wxCoord x) const { return LogicalToDeviceX( x ); }
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wxCoord XLOG2DEVREL(wxCoord x) const { return LogicalToDeviceXRel( x ); }
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wxCoord YLOG2DEV(wxCoord y) const { return LogicalToDeviceY( y ); }
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wxCoord YLOG2DEVREL(wxCoord y) const { return LogicalToDeviceYRel( y ); }
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// probably no longer needed
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wxCoord XLOG2DEVMAC(wxCoord x) const { return LogicalToDeviceX( x ); }
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wxCoord YLOG2DEVMAC(wxCoord y) const { return LogicalToDeviceY( y ); }
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#if wxMAC_USE_CORE_GRAPHICS
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wxGraphicsContext* GetGraphicsContext() { return m_graphicContext; }
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#else
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WXHRGN MacGetCurrentClipRgn() { return m_macCurrentClipRgn; }
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static void MacSetupBackgroundForCurrentPort(const wxBrush& background );
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#endif
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protected:
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virtual void DoGetTextExtent(const wxString& string,
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wxCoord *x, wxCoord *y,
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wxCoord *descent = NULL,
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wxCoord *externalLeading = NULL,
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const wxFont *theFont = NULL) const;
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virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const;
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virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
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int style = wxFLOOD_SURFACE);
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virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
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virtual void DoDrawPoint(wxCoord x, wxCoord y);
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#if wxMAC_USE_CORE_GRAPHICS && wxUSE_SPLINES
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virtual void DoDrawSpline(wxList *points);
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#endif
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virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
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virtual void DoDrawArc(wxCoord x1, wxCoord y1,
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wxCoord x2, wxCoord y2,
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wxCoord xc, wxCoord yc);
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virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
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double sa, double ea);
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virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
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virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
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wxCoord width, wxCoord height,
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double radius);
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virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
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virtual void DoCrossHair(wxCoord x, wxCoord y);
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virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
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virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
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bool useMask = false);
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virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
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virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
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double angle);
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virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
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wxDC *source, wxCoord xsrc, wxCoord ysrc,
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int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
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virtual bool DoStretchBlit(wxCoord xdest, wxCoord ydest,
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wxCoord dstWidth, wxCoord dstHeight,
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wxDC *source,
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wxCoord xsrc, wxCoord ysrc,
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wxCoord srcWidth, wxCoord srcHeight,
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int rop = wxCOPY, bool useMask = false,
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wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord);
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// this is gnarly - we can't even call this function DoSetClippingRegion()
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// because of virtual function hiding
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virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
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virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
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wxCoord width, wxCoord height);
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virtual void DoGetSizeMM(int *width, int *height) const;
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virtual void DoDrawLines(int n, wxPoint points[],
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wxCoord xoffset, wxCoord yoffset);
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virtual void DoDrawPolygon(int n, wxPoint points[],
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wxCoord xoffset, wxCoord yoffset,
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int fillStyle = wxODDEVEN_RULE);
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protected:
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// scaling variables
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double m_mm_to_pix_x, m_mm_to_pix_y;
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// To be set using SetDeviceOrigin()
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// by external classes such as wxScrolledWindow
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long m_externalDeviceOriginX, m_externalDeviceOriginY;
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#if !wxMAC_USE_CORE_GRAPHICS
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// If un-scrolled is non-zero or d.o. changes with scrolling.
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// Set using SetInternalDeviceOrigin().
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long m_internalDeviceOriginX, m_internalDeviceOriginY;
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WXHBITMAP m_macMask;
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#endif
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// not yet used
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bool m_needComputeScaleX, m_needComputeScaleY;
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public:
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// implementation
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void MacInstallFont() const;
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// in order to preserve the const inheritance of the virtual functions,
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// we have to use mutable variables starting from CWPro 5
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wxPoint m_macLocalOrigin;
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mutable void *m_macATSUIStyle;
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WXHDC m_macPort;
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#if wxMAC_USE_CORE_GRAPHICS
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wxGraphicsContext *m_graphicContext;
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#else
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void MacInstallPen() const;
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void MacInstallBrush() const;
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void MacSetupPort( wxMacPortStateHelper *ph ) const;
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void MacCleanupPort( wxMacPortStateHelper *ph ) const;
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mutable wxMacPortStateHelper *m_macCurrentPortStateHelper;
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mutable bool m_macFontInstalled;
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mutable bool m_macPenInstalled;
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mutable bool m_macBrushInstalled;
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WXHRGN m_macBoundaryClipRgn;
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WXHRGN m_macCurrentClipRgn;
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mutable bool m_macFormerAliasState;
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mutable short m_macFormerAliasSize;
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mutable bool m_macAliasWasEnabled;
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mutable void *m_macForegroundPixMap;
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mutable void *m_macBackgroundPixMap;
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#endif
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};
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#endif
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#endif // _WX_DC_H_
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