49000defcf
Graphics renderers (exposed through wxGraphicsContext) support arbitrary affine transformations so it is possible to add support for affine transformations in wxGCDC by implementing all wxGCDC::*TransformMatrix() functions with calls to respective wxGraphicsContext functions. Additionally, this implementation adds support for affine transformations in wxDC under wxGTK3 because in this port wxDC is equivalent to wxGCDC.
238 lines
8.5 KiB
C++
238 lines
8.5 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/dcgraph.h
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// Purpose: graphics context device bridge header
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// Author: Stefan Csomor
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// Modified by:
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// Created:
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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_GRAPHICS_DC_H_
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#define _WX_GRAPHICS_DC_H_
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#if wxUSE_GRAPHICS_CONTEXT
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#include "wx/dc.h"
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#include "wx/geometry.h"
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#include "wx/graphics.h"
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class WXDLLIMPEXP_FWD_CORE wxWindowDC;
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class WXDLLIMPEXP_CORE wxGCDC: public wxDC
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{
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public:
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wxGCDC( const wxWindowDC& dc );
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wxGCDC( const wxMemoryDC& dc );
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#if wxUSE_PRINTING_ARCHITECTURE
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wxGCDC( const wxPrinterDC& dc );
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#endif
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#if defined(__WXMSW__) && wxUSE_ENH_METAFILE
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wxGCDC( const wxEnhMetaFileDC& dc );
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#endif
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wxGCDC(wxGraphicsContext* context);
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wxGCDC();
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virtual ~wxGCDC();
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#ifdef __WXMSW__
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// override wxDC virtual functions to provide access to HDC associated with
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// this Graphics object (implemented in src/msw/graphics.cpp)
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virtual WXHDC AcquireHDC();
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virtual void ReleaseHDC(WXHDC hdc);
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#endif // __WXMSW__
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private:
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wxDECLARE_DYNAMIC_CLASS(wxGCDC);
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wxDECLARE_NO_COPY_CLASS(wxGCDC);
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};
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class WXDLLIMPEXP_CORE wxGCDCImpl: public wxDCImpl
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{
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public:
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wxGCDCImpl( wxDC *owner, const wxWindowDC& dc );
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wxGCDCImpl( wxDC *owner, const wxMemoryDC& dc );
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#if wxUSE_PRINTING_ARCHITECTURE
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wxGCDCImpl( wxDC *owner, const wxPrinterDC& dc );
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#endif
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#if defined(__WXMSW__) && wxUSE_ENH_METAFILE
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wxGCDCImpl( wxDC *owner, const wxEnhMetaFileDC& dc );
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#endif
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wxGCDCImpl( wxDC *owner );
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virtual ~wxGCDCImpl();
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// implement base class pure virtuals
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// ----------------------------------
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virtual void Clear() wxOVERRIDE;
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virtual bool StartDoc( const wxString& message ) wxOVERRIDE;
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virtual void EndDoc() wxOVERRIDE;
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virtual void StartPage() wxOVERRIDE;
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virtual void EndPage() wxOVERRIDE;
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// flushing the content of this dc immediately onto screen
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virtual void Flush() wxOVERRIDE;
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virtual void SetFont(const wxFont& font) wxOVERRIDE;
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virtual void SetPen(const wxPen& pen) wxOVERRIDE;
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virtual void SetBrush(const wxBrush& brush) wxOVERRIDE;
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virtual void SetBackground(const wxBrush& brush) wxOVERRIDE;
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virtual void SetBackgroundMode(int mode) wxOVERRIDE;
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virtual void SetPalette(const wxPalette& palette) wxOVERRIDE;
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virtual void DestroyClippingRegion() wxOVERRIDE;
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virtual wxCoord GetCharHeight() const wxOVERRIDE;
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virtual wxCoord GetCharWidth() const wxOVERRIDE;
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virtual bool CanDrawBitmap() const wxOVERRIDE;
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virtual bool CanGetTextExtent() const wxOVERRIDE;
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virtual int GetDepth() const wxOVERRIDE;
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virtual wxSize GetPPI() const wxOVERRIDE;
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virtual void SetLogicalFunction(wxRasterOperationMode function) wxOVERRIDE;
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virtual void SetTextForeground(const wxColour& colour) wxOVERRIDE;
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virtual void SetTextBackground(const wxColour& colour) wxOVERRIDE;
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virtual void ComputeScaleAndOrigin() wxOVERRIDE;
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wxGraphicsContext* GetGraphicsContext() const wxOVERRIDE { return m_graphicContext; }
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virtual void SetGraphicsContext( wxGraphicsContext* ctx ) wxOVERRIDE;
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virtual void* GetHandle() const wxOVERRIDE;
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#if wxUSE_DC_TRANSFORM_MATRIX
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virtual bool CanUseTransformMatrix() const wxOVERRIDE;
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virtual bool SetTransformMatrix(const wxAffineMatrix2D& matrix) wxOVERRIDE;
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virtual wxAffineMatrix2D GetTransformMatrix() const wxOVERRIDE;
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virtual void ResetTransformMatrix() wxOVERRIDE;
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#endif // wxUSE_DC_TRANSFORM_MATRIX
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// the true implementations
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virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
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wxFloodFillStyle style = wxFLOOD_SURFACE) wxOVERRIDE;
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virtual void DoGradientFillLinear(const wxRect& rect,
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const wxColour& initialColour,
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const wxColour& destColour,
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wxDirection nDirection = wxEAST) wxOVERRIDE;
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virtual void DoGradientFillConcentric(const wxRect& rect,
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const wxColour& initialColour,
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const wxColour& destColour,
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const wxPoint& circleCenter) wxOVERRIDE;
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virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const wxOVERRIDE;
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virtual void DoDrawPoint(wxCoord x, wxCoord y) wxOVERRIDE;
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#if wxUSE_SPLINES
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virtual void DoDrawSpline(const wxPointList *points) wxOVERRIDE;
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#endif
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virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) wxOVERRIDE;
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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) wxOVERRIDE;
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virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
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wxCoord width, wxCoord height) wxOVERRIDE;
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virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
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double sa, double ea) wxOVERRIDE;
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virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) wxOVERRIDE;
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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) wxOVERRIDE;
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virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height) wxOVERRIDE;
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virtual void DoCrossHair(wxCoord x, wxCoord y) wxOVERRIDE;
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virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) wxOVERRIDE;
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virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
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bool useMask = false) wxOVERRIDE;
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virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y) wxOVERRIDE;
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virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
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double angle) wxOVERRIDE;
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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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wxRasterOperationMode rop = wxCOPY, bool useMask = false,
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wxCoord xsrcMask = -1, wxCoord ysrcMask = -1) wxOVERRIDE;
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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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wxRasterOperationMode = wxCOPY, bool useMask = false,
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wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord) wxOVERRIDE;
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virtual void DoGetSize(int *,int *) const wxOVERRIDE;
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virtual void DoGetSizeMM(int* width, int* height) const wxOVERRIDE;
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virtual void DoDrawLines(int n, const wxPoint points[],
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wxCoord xoffset, wxCoord yoffset) wxOVERRIDE;
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virtual void DoDrawPolygon(int n, const wxPoint points[],
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wxCoord xoffset, wxCoord yoffset,
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wxPolygonFillMode fillStyle = wxODDEVEN_RULE) wxOVERRIDE;
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virtual void DoDrawPolyPolygon(int n, const int count[], const wxPoint points[],
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wxCoord xoffset, wxCoord yoffset,
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wxPolygonFillMode fillStyle) wxOVERRIDE;
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virtual void DoSetDeviceClippingRegion(const wxRegion& region) wxOVERRIDE;
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virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
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wxCoord width, wxCoord height) wxOVERRIDE;
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virtual void DoGetClippingBox(wxCoord *x, wxCoord *y,
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wxCoord *w, wxCoord *h) const wxOVERRIDE;
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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 wxOVERRIDE;
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virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const wxOVERRIDE;
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#ifdef __WXMSW__
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virtual wxRect MSWApplyGDIPlusTransform(const wxRect& r) const;
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#endif // __WXMSW__
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// update the internal clip box variables
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void UpdateClipBox();
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protected:
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// unused int parameter distinguishes this version, which does not create a
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// wxGraphicsContext, in the expectation that the derived class will do it
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wxGCDCImpl(wxDC* owner, int);
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// scaling variables
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bool m_logicalFunctionSupported;
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wxGraphicsMatrix m_matrixOriginal;
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wxGraphicsMatrix m_matrixCurrent;
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double m_formerScaleX, m_formerScaleY;
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wxGraphicsContext* m_graphicContext;
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bool m_isClipBoxValid;
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private:
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void Init(wxGraphicsContext*);
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wxDECLARE_CLASS(wxGCDCImpl);
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wxDECLARE_NO_COPY_CLASS(wxGCDCImpl);
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};
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#endif // wxUSE_GRAPHICS_CONTEXT
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#endif // _WX_GRAPHICS_DC_H_
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