98714ea452
Member data containing clipping box have to be updated not only when the clipping region is explicitly changed by SetClippingRegion()/DestroyClippingRegion() but also when existing wxGraphicsContext is associated with wxGCDC using SetGraphicsContext() or when wxGCDC coordinates are transformed with SetDeviceOrigin(), SetLogicalOrigin(), SetUserScale() or SetLogicalScale(). When any of these functions is called then clipping box data are marked as invalid and retrieved from underlying graphics context using wxGraphicsContext::GetClipBox() at nearest call to GetClippingBox(). See #17646.
231 lines
8.2 KiB
C++
231 lines
8.2 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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// 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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