X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/02255e07d75191d1146e21d4218835a79214a970..fd5cfba71157c481b5bc90563d0d990ec67ecb11:/include/wx/dc.h diff --git a/include/wx/dc.h b/include/wx/dc.h index a77cfee664..b519785afa 100644 --- a/include/wx/dc.h +++ b/include/wx/dc.h @@ -26,134 +26,250 @@ #include "wx/brush.h" #include "wx/pen.h" #include "wx/palette.h" -#include "wx/list.h" // we use wxList in inline functions #include "wx/dynarray.h" #include "wx/math.h" #include "wx/image.h" +#include "wx/region.h" +#include "wx/affinematrix2d.h" - // 1 if using the reorganized DC code -#define wxUSE_NEW_DC 0 +#define wxUSE_NEW_DC 1 +class WXDLLIMPEXP_FWD_CORE wxDC; +class WXDLLIMPEXP_FWD_CORE wxClientDC; +class WXDLLIMPEXP_FWD_CORE wxPaintDC; +class WXDLLIMPEXP_FWD_CORE wxWindowDC; +class WXDLLIMPEXP_FWD_CORE wxScreenDC; +class WXDLLIMPEXP_FWD_CORE wxMemoryDC; +class WXDLLIMPEXP_FWD_CORE wxPrinterDC; +class WXDLLIMPEXP_FWD_CORE wxPrintData; -#if wxUSE_NEW_DC - -//----------------------------------------------------------------------------- -// wxDCFactory -//----------------------------------------------------------------------------- - -class WXDLLIMPEXP_FWD_CORE wxImplDC; +#if wxUSE_GRAPHICS_CONTEXT +class WXDLLIMPEXP_FWD_CORE wxGraphicsContext; +#endif -class WXDLLIMPEXP_CORE wxDCFactory +// Logical ops +enum wxRasterOperationMode { -public: - wxDCFactory() {} - virtual ~wxDCFactory() {} - - virtual wxImplDC* CreateWindowDC() = 0; - virtual wxImplDC* CreateWindowDC( wxWindow *window ) = 0; - virtual wxImplDC* CreateClientDC() = 0; - virtual wxImplDC* CreateClientDC( wxWindow *window ) = 0; - virtual wxImplDC* CreatePaintDC() = 0; - virtual wxImplDC* CreatePaintDC( wxWindow *window ) = 0; - virtual wxImplDC* CreateMemoryDC() = 0; - virtual wxImplDC* CreateMemoryDC( wxBitmap &bitmap ) = 0; - virtual wxImplDC* CreateMemoryDC( wxDC *dc ) = 0; - - static void SetDCFactory( wxDCFactory *factory ); - static wxDCFactory *GetFactory(); -private: - static wxDCFactory *m_factory; + wxCLEAR, // 0 + wxXOR, // src XOR dst + wxINVERT, // NOT dst + wxOR_REVERSE, // src OR (NOT dst) + wxAND_REVERSE, // src AND (NOT dst) + wxCOPY, // src + wxAND, // src AND dst + wxAND_INVERT, // (NOT src) AND dst + wxNO_OP, // dst + wxNOR, // (NOT src) AND (NOT dst) + wxEQUIV, // (NOT src) XOR dst + wxSRC_INVERT, // (NOT src) + wxOR_INVERT, // (NOT src) OR dst + wxNAND, // (NOT src) OR (NOT dst) + wxOR, // src OR dst + wxSET // 1 +#if WXWIN_COMPATIBILITY_2_8 + ,wxROP_BLACK = wxCLEAR, + wxBLIT_BLACKNESS = wxCLEAR, + wxROP_XORPEN = wxXOR, + wxBLIT_SRCINVERT = wxXOR, + wxROP_NOT = wxINVERT, + wxBLIT_DSTINVERT = wxINVERT, + wxROP_MERGEPENNOT = wxOR_REVERSE, + wxBLIT_00DD0228 = wxOR_REVERSE, + wxROP_MASKPENNOT = wxAND_REVERSE, + wxBLIT_SRCERASE = wxAND_REVERSE, + wxROP_COPYPEN = wxCOPY, + wxBLIT_SRCCOPY = wxCOPY, + wxROP_MASKPEN = wxAND, + wxBLIT_SRCAND = wxAND, + wxROP_MASKNOTPEN = wxAND_INVERT, + wxBLIT_00220326 = wxAND_INVERT, + wxROP_NOP = wxNO_OP, + wxBLIT_00AA0029 = wxNO_OP, + wxROP_NOTMERGEPEN = wxNOR, + wxBLIT_NOTSRCERASE = wxNOR, + wxROP_NOTXORPEN = wxEQUIV, + wxBLIT_00990066 = wxEQUIV, + wxROP_NOTCOPYPEN = wxSRC_INVERT, + wxBLIT_NOTSCRCOPY = wxSRC_INVERT, + wxROP_MERGENOTPEN = wxOR_INVERT, + wxBLIT_MERGEPAINT = wxOR_INVERT, + wxROP_NOTMASKPEN = wxNAND, + wxBLIT_007700E6 = wxNAND, + wxROP_MERGEPEN = wxOR, + wxBLIT_SRCPAINT = wxOR, + wxROP_WHITE = wxSET, + wxBLIT_WHITENESS = wxSET +#endif //WXWIN_COMPATIBILITY_2_8 }; -//----------------------------------------------------------------------------- -// wxNativeDCFactory -//----------------------------------------------------------------------------- - -class WXDLLIMPEXP_CORE wxDCFactory +// Flood styles +enum wxFloodFillStyle { -public: - wxNativeDCFactory() {} - - virtual wxImplDC* CreateWindowDC(); - virtual wxImplDC* CreateWindowDC( wxWindow *window ); - virtual wxImplDC* CreateClientDC(); - virtual wxImplDC* CreateClientDC( wxWindow *window ); - virtual wxImplDC* CreatePaintDC(); - virtual wxImplDC* CreatePaintDC( wxWindow *window ); - virtual wxImplDC* CreateMemoryDC(); - virtual wxImplDC* CreateMemoryDC( wxBitmap &bitmap ); - virtual wxImplDC* CreateMemoryDC( wxDC *dc ); + wxFLOOD_SURFACE = 1, + wxFLOOD_BORDER }; -//----------------------------------------------------------------------------- -// wxWindowDC -//----------------------------------------------------------------------------- +// Mapping modes +enum wxMappingMode +{ + wxMM_TEXT = 1, + wxMM_METRIC, + wxMM_LOMETRIC, + wxMM_TWIPS, + wxMM_POINTS +}; -class WXDLLIMPEXP_CORE wxWindowDC : public wxDC +// Description of text characteristics. +struct wxFontMetrics { -public: - wxWindowDC(); - wxWindowDC( wxWindow *win ); + wxFontMetrics() + { + height = + ascent = + descent = + internalLeading = + externalLeading = + averageWidth = 0; + } -private: - DECLARE_DYNAMIC_CLASS(wxWindowDC) + int height, // Total character height. + ascent, // Part of the height above the baseline. + descent, // Part of the height below the baseline. + internalLeading, // Intra-line spacing. + externalLeading, // Inter-line spacing. + averageWidth; // Average font width, a.k.a. "x-width". }; +#if WXWIN_COMPATIBILITY_2_8 + //----------------------------------------------------------------------------- -// wxClientDC +// wxDrawObject helper class //----------------------------------------------------------------------------- -class WXDLLIMPEXP_CORE wxClientDC : public wxDC +class WXDLLIMPEXP_CORE wxDrawObject { public: - wxClientDC(); - wxClientDC( wxWindow *win ); + wxDEPRECATED_CONSTRUCTOR(wxDrawObject)() + : m_isBBoxValid(false) + , m_minX(0), m_minY(0), m_maxX(0), m_maxY(0) + { } -private: - DECLARE_DYNAMIC_CLASS(wxClientDC) + virtual ~wxDrawObject() { } + + virtual void Draw(wxDC&) const { } + + virtual void CalcBoundingBox(wxCoord x, wxCoord y) + { + if ( m_isBBoxValid ) + { + if ( x < m_minX ) m_minX = x; + if ( y < m_minY ) m_minY = y; + if ( x > m_maxX ) m_maxX = x; + if ( y > m_maxY ) m_maxY = y; + } + else + { + m_isBBoxValid = true; + + m_minX = x; + m_minY = y; + m_maxX = x; + m_maxY = y; + } + } + + void ResetBoundingBox() + { + m_isBBoxValid = false; + + m_minX = m_maxX = m_minY = m_maxY = 0; + } + + // Get the final bounding box of the PostScript or Metafile picture. + + wxCoord MinX() const { return m_minX; } + wxCoord MaxX() const { return m_maxX; } + wxCoord MinY() const { return m_minY; } + wxCoord MaxY() const { return m_maxY; } + + //to define the type of object for derived objects + virtual int GetType()=0; + +protected: + //for boundingbox calculation + bool m_isBBoxValid:1; + //for boundingbox calculation + wxCoord m_minX, m_minY, m_maxX, m_maxY; }; +#endif // WXWIN_COMPATIBILITY_2_8 + + //----------------------------------------------------------------------------- -// wxMemoryDC +// wxDCFactory //----------------------------------------------------------------------------- -class WXDLLIMPEXP_CORE wxMemoryDC: public wxDC +class WXDLLIMPEXP_FWD_CORE wxDCImpl; + +class WXDLLIMPEXP_CORE wxDCFactory { public: - wxMemoryDC(); - wxMemoryDC( wxBitmap& bitmap ); - wxMemoryDC( wxDC *dc ); - + wxDCFactory() {} + virtual ~wxDCFactory() {} + + virtual wxDCImpl* CreateWindowDC( wxWindowDC *owner, wxWindow *window ) = 0; + virtual wxDCImpl* CreateClientDC( wxClientDC *owner, wxWindow *window ) = 0; + virtual wxDCImpl* CreatePaintDC( wxPaintDC *owner, wxWindow *window ) = 0; + virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner ) = 0; + virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxBitmap &bitmap ) = 0; + virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxDC *dc ) = 0; + virtual wxDCImpl* CreateScreenDC( wxScreenDC *owner ) = 0; +#if wxUSE_PRINTING_ARCHITECTURE + virtual wxDCImpl* CreatePrinterDC( wxPrinterDC *owner, const wxPrintData &data ) = 0; +#endif + + static void Set(wxDCFactory *factory); + static wxDCFactory *Get(); + private: - DECLARE_DYNAMIC_CLASS(wxMemoryDC) + static wxDCFactory *m_factory; }; - + //----------------------------------------------------------------------------- -// wxPaintDC +// wxNativeDCFactory //----------------------------------------------------------------------------- -class WXDLLIMPEXP_CORE wxPaintDC : public wxDC +class WXDLLIMPEXP_CORE wxNativeDCFactory: public wxDCFactory { public: - wxPaintDC(); - wxPaintDC( wxWindow *win ); + wxNativeDCFactory() {} -private: - DECLARE_DYNAMIC_CLASS(wxPaintDC) + virtual wxDCImpl* CreateWindowDC( wxWindowDC *owner, wxWindow *window ); + virtual wxDCImpl* CreateClientDC( wxClientDC *owner, wxWindow *window ); + virtual wxDCImpl* CreatePaintDC( wxPaintDC *owner, wxWindow *window ); + virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner ); + virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxBitmap &bitmap ); + virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxDC *dc ); + virtual wxDCImpl* CreateScreenDC( wxScreenDC *owner ); +#if wxUSE_PRINTING_ARCHITECTURE + virtual wxDCImpl* CreatePrinterDC( wxPrinterDC *owner, const wxPrintData &data ); +#endif }; //----------------------------------------------------------------------------- -// wxImplDC +// wxDCImpl //----------------------------------------------------------------------------- -class WXDLLIMPEXP_CORE wxImplDC: public wxObject +class WXDLLIMPEXP_CORE wxDCImpl: public wxObject { public: - wxImplDC( wxDC *owner ); - ~wxImplDC(); - - wxDC *GetOwner() { return m_owner; } - + wxDCImpl( wxDC *owner ); + virtual ~wxDCImpl(); + + wxDC *GetOwner() const { return m_owner; } + + wxWindow* GetWindow() const { return m_window; } + virtual bool IsOk() const { return m_ok; } // query capabilities @@ -161,30 +277,52 @@ public: virtual bool CanDrawBitmap() const = 0; virtual bool CanGetTextExtent() const = 0; + // get Cairo context + virtual void* GetCairoContext() const + { + return NULL; + } + // query dimension, colour deps, resolution virtual void DoGetSize(int *width, int *height) const = 0; + void GetSize(int *width, int *height) const + { + DoGetSize(width, height); + return ; + } + + wxSize GetSize() const + { + int w, h; + DoGetSize(&w, &h); + return wxSize(w, h); + } + virtual void DoGetSizeMM(int* width, int* height) const = 0; - + virtual int GetDepth() const = 0; virtual wxSize GetPPI() const = 0; - + // Right-To-Left (RTL) modes - + virtual void SetLayoutDirection(wxLayoutDirection WXUNUSED(dir)) { } virtual wxLayoutDirection GetLayoutDirection() const { return wxLayout_Default; } - - // page and document - + + // page and document + virtual bool StartDoc(const wxString& WXUNUSED(message)) { return true; } virtual void EndDoc() { } virtual void StartPage() { } virtual void EndPage() { } + // flushing the content of this dc immediately eg onto screen + virtual void Flush() { } + // bounding box - virtual void CalcBoundingBox(wxCoord x, wxCoord y); + virtual void CalcBoundingBox(wxCoord x, wxCoord y) { if ( m_isBBoxValid ) { @@ -203,7 +341,7 @@ public: m_maxY = y; } } - void ResetBoundingBox(); + void ResetBoundingBox() { m_isBBoxValid = false; @@ -214,45 +352,67 @@ public: wxCoord MaxX() const { return m_maxX; } wxCoord MinY() const { return m_minY; } wxCoord MaxY() const { return m_maxY; } - + // setters and getters virtual void SetFont(const wxFont& font) = 0; - virtual const wxFont& GetFont() const { return m_font; } - + virtual const wxFont& GetFont() const { return m_font; } + virtual void SetPen(const wxPen& pen) = 0; - virtual const wxPen& GetPen() const { return m_pen; } - + virtual const wxPen& GetPen() const { return m_pen; } + virtual void SetBrush(const wxBrush& brush) = 0; - virtual const wxBrush& GetBrush() const { return m_brush; } - + virtual const wxBrush& GetBrush() const { return m_brush; } + virtual void SetBackground(const wxBrush& brush) = 0; - virtual const wxBrush& GetBackground() const { return m_backgroundBrush; } - + virtual const wxBrush& GetBackground() const { return m_backgroundBrush; } + virtual void SetBackgroundMode(int mode) = 0; virtual int GetBackgroundMode() const { return m_backgroundMode; } virtual void SetTextForeground(const wxColour& colour) { m_textForegroundColour = colour; } - virtual const wxColour& GetTextForeground() const { return m_textForegroundColour; } - + virtual const wxColour& GetTextForeground() const + { return m_textForegroundColour; } + virtual void SetTextBackground(const wxColour& colour) { m_textBackgroundColour = colour; } - virtual const wxColour& GetTextBackground() const { return m_textBackgroundColour; } + virtual const wxColour& GetTextBackground() const + { return m_textBackgroundColour; } #if wxUSE_PALETTE virtual void SetPalette(const wxPalette& palette) = 0; #endif // wxUSE_PALETTE + // inherit the DC attributes (font and colours) from the given window + // + // this is called automatically when a window, client or paint DC is + // created + virtual void InheritAttributes(wxWindow *win); + + // logical functions - - virtual void SetLogicalFunction(int function) = 0; - virtual int GetLogicalFunction() const { return m_logicalFunction; } + + virtual void SetLogicalFunction(wxRasterOperationMode function) = 0; + virtual wxRasterOperationMode GetLogicalFunction() const + { return m_logicalFunction; } // text measurement virtual wxCoord GetCharHeight() const = 0; virtual wxCoord GetCharWidth() const = 0; + + // The derived classes should really override DoGetFontMetrics() to return + // the correct values in the future but for now provide a default + // implementation in terms of DoGetTextExtent() to avoid breaking the + // compilation of all other ports as wxMSW is the only one to implement it. + virtual void DoGetFontMetrics(int *height, + int *ascent, + int *descent, + int *internalLeading, + int *externalLeading, + int *averageWidth) const; + virtual void DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y, wxCoord *descent = NULL, @@ -264,16 +424,18 @@ public: wxCoord *heightLine = NULL, const wxFont *font = NULL) const; virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const; - + // clearing - + virtual void Clear() = 0; // clipping virtual void DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height) = 0; - virtual void DoSetClippingRegionAsRegion(const wxRegion& region) = 0; + + // NB: this function works with device coordinates, not the logical ones! + virtual void DoSetDeviceClippingRegion(const wxRegion& region) = 0; virtual void DoGetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const @@ -302,8 +464,8 @@ public: virtual wxCoord LogicalToDeviceXRel(wxCoord x) const; virtual wxCoord LogicalToDeviceYRel(wxCoord y) const; - virtual void SetMapMode(int mode); - virtual int GetMapMode() const { return m_mappingMode; } + virtual void SetMapMode(wxMappingMode mode); + virtual wxMappingMode GetMapMode() const { return m_mappingMode; } virtual void SetUserScale(double x, double y); virtual void GetUserScale(double *x, double *y) const @@ -313,7 +475,7 @@ public: } virtual void SetLogicalScale(double x, double y); - virtual void GetLogicalScale(double *x, double *y) + virtual void GetLogicalScale(double *x, double *y) const { if ( x ) *x = m_logicalScaleX; if ( y ) *y = m_logicalScaleY; @@ -332,7 +494,21 @@ public: if ( x ) *x = m_deviceOriginX; if ( y ) *y = m_deviceOriginY; } - + +#if wxUSE_DC_TRANSFORM_MATRIX + // Transform matrix support is not available in most ports right now + // (currently only wxMSW provides it) so do nothing in these methods by + // default. + virtual bool CanUseTransformMatrix() const + { return false; } + virtual bool SetTransformMatrix(const wxAffineMatrix2D& WXUNUSED(matrix)) + { return false; } + virtual wxAffineMatrix2D GetTransformMatrix() const + { return wxAffineMatrix2D(); } + virtual void ResetTransformMatrix() + { } +#endif // wxUSE_DC_TRANSFORM_MATRIX + virtual void SetDeviceLocalOrigin( wxCoord x, wxCoord y ); virtual void ComputeScaleAndOrigin(); @@ -340,11 +516,24 @@ public: // this needs to overidden if the axis is inverted virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp); +#ifdef __WXMSW__ + // Native Windows functions using the underlying HDC don't honour GDI+ + // transformations which may be applied to it. Using this function we can + // transform the coordinates manually before passing them to such functions + // (as in e.g. wxRendererMSW code). It doesn't do anything if this is not a + // wxGCDC. + virtual wxRect MSWApplyGDIPlusTransform(const wxRect& r) const + { + return r; + } +#endif // __WXMSW__ + + // --------------------------------------------------------- // the actual drawing API virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, - int style = wxFLOOD_SURFACE) = 0; + wxFloodFillStyle style = wxFLOOD_SURFACE) = 0; virtual void DoGradientFillLinear(const wxRect& rect, const wxColour& initialColour, @@ -390,7 +579,7 @@ public: wxCoord width, wxCoord height, wxDC *source, wxCoord xsrc, wxCoord ysrc, - int rop = wxCOPY, + wxRasterOperationMode rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord) = 0; @@ -400,7 +589,7 @@ public: wxDC *source, wxCoord xsrc, wxCoord ysrc, wxCoord srcWidth, wxCoord srcHeight, - int rop = wxCOPY, + wxRasterOperationMode rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord); @@ -410,24 +599,62 @@ public: virtual void DoDrawLines(int n, wxPoint points[], - wxCoord xoffset, wxCoord yoffset) = 0; + wxCoord xoffset, wxCoord yoffset ) = 0; + virtual void DrawLines(const wxPointList *list, + wxCoord xoffset, wxCoord yoffset ); + virtual void DoDrawPolygon(int n, wxPoint points[], - wxCoord xoffset, wxCoord yoffset, - int fillStyle = wxODDEVEN_RULE) = 0; + wxCoord xoffset, wxCoord yoffset, + wxPolygonFillMode fillStyle = wxODDEVEN_RULE) = 0; virtual void DoDrawPolyPolygon(int n, int count[], wxPoint points[], wxCoord xoffset, wxCoord yoffset, - int fillStyle); - + wxPolygonFillMode fillStyle); + void DrawPolygon(const wxPointList *list, + wxCoord xoffset, wxCoord yoffset, + wxPolygonFillMode fillStyle ); #if wxUSE_SPLINES - virtual void DoDrawSpline(wxList *points); + void DrawSpline(wxCoord x1, wxCoord y1, + wxCoord x2, wxCoord y2, + wxCoord x3, wxCoord y3); + void DrawSpline(int n, wxPoint points[]); + void DrawSpline(const wxPointList *points) { DoDrawSpline(points); } + + virtual void DoDrawSpline(const wxPointList *points); +#endif + + // --------------------------------------------------------- + // wxMemoryDC Impl API + + virtual void DoSelect(const wxBitmap& WXUNUSED(bmp)) + { } + + virtual const wxBitmap& GetSelectedBitmap() const + { return wxNullBitmap; } + virtual wxBitmap& GetSelectedBitmap() + { return wxNullBitmap; } + + // --------------------------------------------------------- + // wxPrinterDC Impl API + + virtual wxRect GetPaperRect() const + { int w = 0; int h = 0; DoGetSize( &w, &h ); return wxRect(0,0,w,h); } + + virtual int GetResolution() const + { return -1; } + +#if wxUSE_GRAPHICS_CONTEXT + virtual wxGraphicsContext* GetGraphicsContext() const + { return NULL; } + virtual void SetGraphicsContext( wxGraphicsContext* WXUNUSED(ctx) ) + {} #endif - + private: - wxDC *m_owner; + wxDC *m_owner; -protected: +protected: // unset clipping variables (after clipping region was destroyed) void ResetClipping() { @@ -436,6 +663,61 @@ protected: m_clipX1 = m_clipX2 = m_clipY1 = m_clipY2 = 0; } +#ifdef __WXWINCE__ + //! Generic method to draw ellipses, circles and arcs with current pen and brush. + /*! \param x Upper left corner of bounding box. + * \param y Upper left corner of bounding box. + * \param w Width of bounding box. + * \param h Height of bounding box. + * \param sa Starting angle of arc + * (counterclockwise, start at 3 o'clock, 360 is full circle). + * \param ea Ending angle of arc. + * \param angle Rotation angle, the Arc will be rotated after + * calculating begin and end. + */ + void DrawEllipticArcRot( wxCoord x, wxCoord y, + wxCoord width, wxCoord height, + double sa = 0, double ea = 0, double angle = 0 ) + { DoDrawEllipticArcRot( x, y, width, height, sa, ea, angle ); } + + void DrawEllipticArcRot( const wxPoint& pt, + const wxSize& sz, + double sa = 0, double ea = 0, double angle = 0 ) + { DoDrawEllipticArcRot( pt.x, pt.y, sz.x, sz.y, sa, ea, angle ); } + + void DrawEllipticArcRot( const wxRect& rect, + double sa = 0, double ea = 0, double angle = 0 ) + { DoDrawEllipticArcRot( rect.x, rect.y, rect.width, rect.height, sa, ea, angle ); } + + virtual void DoDrawEllipticArcRot( wxCoord x, wxCoord y, + wxCoord w, wxCoord h, + double sa = 0, double ea = 0, double angle = 0 ); + + //! Rotates points around center. + /*! This is a quite straight method, it calculates in pixels + * and so it produces rounding errors. + * \param points The points inside will be rotated. + * \param angle Rotating angle (counterclockwise, start at 3 o'clock, 360 is full circle). + * \param center Center of rotation. + */ + void Rotate( wxPointList* points, double angle, wxPoint center = wxPoint(0,0) ); + + // used by DrawEllipticArcRot + // Careful: wxList gets filled with points you have to delete later. + void CalculateEllipticPoints( wxPointList* points, + wxCoord xStart, wxCoord yStart, + wxCoord w, wxCoord h, + double sa, double ea ); +#endif // __WXWINCE__ + + // returns adjustment factor for converting wxFont "point size"; in wx + // it is point size on screen and needs to be multiplied by this value + // for rendering on higher-resolution DCs such as printer ones + static float GetFontPointSizeAdjustment(float dpi); + + // window on which the DC draws or NULL + wxWindow *m_window; + // flags bool m_colour:1; bool m_ok:1; @@ -447,7 +729,7 @@ protected: wxCoord m_logicalOriginX, m_logicalOriginY; wxCoord m_deviceOriginX, m_deviceOriginY; // Usually 0,0, can be change by user - + wxCoord m_deviceLocalOriginX, m_deviceLocalOriginY; // non-zero if native top-left corner // is not at 0,0. This was the case under // Mac's GrafPorts (coordinate system @@ -459,18 +741,18 @@ protected: double m_scaleX, m_scaleY; // calculated from logical scale and user scale int m_signX, m_signY; // Used by SetAxisOrientation() to invert the axes - + // 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; - + // bounding and clipping boxes wxCoord m_minX, m_minY, m_maxX, m_maxY; wxCoord m_clipX1, m_clipY1, m_clipX2, m_clipY2; - int m_logicalFunction; + wxRasterOperationMode m_logicalFunction; int m_backgroundMode; - int m_mappingMode; + wxMappingMode m_mappingMode; wxPen m_pen; wxBrush m_brush; @@ -485,36 +767,42 @@ protected: #endif // wxUSE_PALETTE private: - DECLARE_ABSTRACT_CLASS(wxImplDC) -} + DECLARE_ABSTRACT_CLASS(wxDCImpl) +}; -class wxDC: public wxObject +class WXDLLIMPEXP_CORE wxDC : public wxObject { public: - wxDC() { m_pimpl = NULL; } + // copy attributes (font, colours and writing direction) from another DC + void CopyAttributes(const wxDC& dc); + + virtual ~wxDC() { delete m_pimpl; } - bool IsOk() const + wxDCImpl *GetImpl() + { return m_pimpl; } + const wxDCImpl *GetImpl() const + { return m_pimpl; } + + wxWindow *GetWindow() const + { return m_pimpl->GetWindow(); } + + bool IsOk() const { return m_pimpl && m_pimpl->IsOk(); } // query capabilities - bool CanDrawBitmap() const + bool CanDrawBitmap() const { return m_pimpl->CanDrawBitmap(); } bool CanGetTextExtent() const { return m_pimpl->CanGetTextExtent(); } - + // query dimension, colour deps, resolution void GetSize(int *width, int *height) const { m_pimpl->DoGetSize(width, height); } - wxSize GetSize() const - { - int w, h; - m_pimpl->DoGetSize(&w, &h); - return wxSize(w, h); - } + { return m_pimpl->GetSize(); } void GetSizeMM(int* width, int* height) const { m_pimpl->DoGetSizeMM(width, height); } @@ -524,21 +812,24 @@ public: m_pimpl->DoGetSizeMM(&w, &h); return wxSize(w, h); } - + int GetDepth() const { return m_pimpl->GetDepth(); } wxSize GetPPI() const { return m_pimpl->GetPPI(); } + virtual int GetResolution() const + { return m_pimpl->GetResolution(); } + // Right-To-Left (RTL) modes - + void SetLayoutDirection(wxLayoutDirection dir) { m_pimpl->SetLayoutDirection( dir ); } wxLayoutDirection GetLayoutDirection() const { return m_pimpl->GetLayoutDirection(); } - - // page and document - + + // page and document + bool StartDoc(const wxString& message) { return m_pimpl->StartDoc(message); } void EndDoc() @@ -550,12 +841,12 @@ public: { m_pimpl->EndPage(); } // bounding box - + void CalcBoundingBox(wxCoord x, wxCoord y) { m_pimpl->CalcBoundingBox(x,y); } void ResetBoundingBox() { m_pimpl->ResetBoundingBox(); } - + wxCoord MinX() const { return m_pimpl->MinX(); } wxCoord MaxX() const @@ -564,63 +855,72 @@ public: { return m_pimpl->MinY(); } wxCoord MaxY() const { return m_pimpl->MaxY(); } - + // setters and getters void SetFont(const wxFont& font) { m_pimpl->SetFont( font ); } - const wxFont& GetFont() const + const wxFont& GetFont() const { return m_pimpl->GetFont(); } - + void SetPen(const wxPen& pen) { m_pimpl->SetPen( pen ); } - const wxPen& GetPen() const + const wxPen& GetPen() const { return m_pimpl->GetPen(); } - + void SetBrush(const wxBrush& brush) { m_pimpl->SetBrush( brush ); } const wxBrush& GetBrush() const { return m_pimpl->GetBrush(); } - + void SetBackground(const wxBrush& brush) { m_pimpl->SetBackground( brush ); } const wxBrush& GetBackground() const { return m_pimpl->GetBackground(); } - + void SetBackgroundMode(int mode) - { m_pimpl->SetBackground( mode ); } + { m_pimpl->SetBackgroundMode( mode ); } int GetBackgroundMode() const - { return m_pimpl->GetBackground(); } + { return m_pimpl->GetBackgroundMode(); } void SetTextForeground(const wxColour& colour) { m_pimpl->SetTextForeground(colour); } const wxColour& GetTextForeground() const { return m_pimpl->GetTextForeground(); } - + void SetTextBackground(const wxColour& colour) { m_pimpl->SetTextBackground(colour); } - const wxColour& GetTextBackground() const + const wxColour& GetTextBackground() const { return m_pimpl->GetTextBackground(); } #if wxUSE_PALETTE void SetPalette(const wxPalette& palette) { m_pimpl->SetPalette(palette); } #endif // wxUSE_PALETTE - + // logical functions - - void SetLogicalFunction(int function) + + void SetLogicalFunction(wxRasterOperationMode function) { m_pimpl->SetLogicalFunction(function); } - int GetLogicalFunction() const + wxRasterOperationMode GetLogicalFunction() const { return m_pimpl->GetLogicalFunction(); } - + // text measurement wxCoord GetCharHeight() const { return m_pimpl->GetCharHeight(); } wxCoord GetCharWidth() const { return m_pimpl->GetCharWidth(); } - + + wxFontMetrics GetFontMetrics() const + { + wxFontMetrics fm; + m_pimpl->DoGetFontMetrics(&fm.height, &fm.ascent, &fm.descent, + &fm.internalLeading, &fm.externalLeading, + &fm.averageWidth); + return fm; + } + void GetTextExtent(const wxString& string, wxCoord *x, wxCoord *y, wxCoord *descent = NULL, @@ -634,26 +934,26 @@ public: m_pimpl->DoGetTextExtent(string, &w, &h); return wxSize(w, h); } - + void GetMultiLineTextExtent(const wxString& string, wxCoord *width, wxCoord *height, wxCoord *heightLine = NULL, const wxFont *font = NULL) const { m_pimpl->GetMultiLineTextExtent( string, width, height, heightLine, font ); } - + wxSize GetMultiLineTextExtent(const wxString& string) const { wxCoord w, h; m_pimpl->GetMultiLineTextExtent(string, &w, &h); return wxSize(w, h); } - + bool GetPartialTextExtents(const wxString& text, wxArrayInt& widths) const { return m_pimpl->DoGetPartialTextExtents(text, widths); } - + // clearing - + void Clear() { m_pimpl->Clear(); } @@ -665,8 +965,21 @@ public: { m_pimpl->DoSetClippingRegion(pt.x, pt.y, sz.x, sz.y); } void SetClippingRegion(const wxRect& rect) { m_pimpl->DoSetClippingRegion(rect.x, rect.y, rect.width, rect.height); } - void SetClippingRegion(const wxRegion& region) - { m_pimpl->DoSetClippingRegionAsRegion(region); } + + // unlike the functions above, the coordinates of the region used in this + // one are in device coordinates, not the logical ones + void SetDeviceClippingRegion(const wxRegion& region) + { m_pimpl->DoSetDeviceClippingRegion(region); } + + // this function is deprecated because its name is confusing: you may + // expect it to work with logical coordinates but, in fact, it does exactly + // the same thing as SetDeviceClippingRegion() + // + // please review the code using it and either replace it with calls to + // SetDeviceClippingRegion() or correct it if it was [wrongly] passing + // logical coordinates to this function + wxDEPRECATED_INLINE(void SetClippingRegion(const wxRegion& region), + SetDeviceClippingRegion(region); ) void DestroyClippingRegion() { m_pimpl->DestroyClippingRegion(); } @@ -675,29 +988,29 @@ public: { m_pimpl->DoGetClippingBox(x, y, w, h); } void GetClippingBox(wxRect& rect) const { m_pimpl->DoGetClippingBox(&rect.x, &rect.y, &rect.width, &rect.height); } - + // coordinates conversions and transforms wxCoord DeviceToLogicalX(wxCoord x) const { return m_pimpl->DeviceToLogicalX(x); } - wxCoord DeviceToLogicalY(wxCoord y) const; + wxCoord DeviceToLogicalY(wxCoord y) const { return m_pimpl->DeviceToLogicalY(y); } - wxCoord DeviceToLogicalXRel(wxCoord x) const; + wxCoord DeviceToLogicalXRel(wxCoord x) const { return m_pimpl->DeviceToLogicalXRel(x); } - wxCoord DeviceToLogicalYRel(wxCoord y) const; + wxCoord DeviceToLogicalYRel(wxCoord y) const { return m_pimpl->DeviceToLogicalYRel(y); } - wxCoord LogicalToDeviceX(wxCoord x) const; + wxCoord LogicalToDeviceX(wxCoord x) const { return m_pimpl->LogicalToDeviceX(x); } - wxCoord LogicalToDeviceY(wxCoord y) const; + wxCoord LogicalToDeviceY(wxCoord y) const { return m_pimpl->LogicalToDeviceY(y); } - wxCoord LogicalToDeviceXRel(wxCoord x) const; + wxCoord LogicalToDeviceXRel(wxCoord x) const { return m_pimpl->LogicalToDeviceXRel(x); } - wxCoord LogicalToDeviceYRel(wxCoord y) const; + wxCoord LogicalToDeviceYRel(wxCoord y) const { return m_pimpl->LogicalToDeviceYRel(y); } - void SetMapMode(int mode) + void SetMapMode(wxMappingMode mode) { m_pimpl->SetMapMode(mode); } - int GetMapMode() const + wxMappingMode GetMapMode() const { return m_pimpl->GetMapMode(); } void SetUserScale(double x, double y) @@ -707,7 +1020,7 @@ public: void SetLogicalScale(double x, double y) { m_pimpl->SetLogicalScale( x, y ); } - void GetLogicalScale(double *x, double *y) + void GetLogicalScale(double *x, double *y) const { m_pimpl->GetLogicalScale( x, y ); } void SetLogicalOrigin(wxCoord x, wxCoord y) @@ -726,29 +1039,34 @@ public: void SetAxisOrientation(bool xLeftRight, bool yBottomUp) { m_pimpl->SetAxisOrientation(xLeftRight, yBottomUp); } - - // mostly internal - void SetDeviceLocalOrigin( wxCoord x, wxCoord y ) - { m_pimpl->SetDeviceLocalOrigin( x, y ); } +#if wxUSE_DC_TRANSFORM_MATRIX + bool CanUseTransformMatrix() const + { return m_pimpl->CanUseTransformMatrix(); } - // draw generic object + bool SetTransformMatrix(const wxAffineMatrix2D &matrix) + { return m_pimpl->SetTransformMatrix(matrix); } - void DrawObject(wxDrawObject* drawobject) - { - drawobject->Draw(*this); - CalcBoundingBox(drawobject->MinX(),drawobject->MinY()); - CalcBoundingBox(drawobject->MaxX(),drawobject->MaxY()); - } + wxAffineMatrix2D GetTransformMatrix() const + { return m_pimpl->GetTransformMatrix(); } - // ----------------------------------------------- + void ResetTransformMatrix() + { m_pimpl->ResetTransformMatrix(); } +#endif // wxUSE_DC_TRANSFORM_MATRIX + + // mostly internal + void SetDeviceLocalOrigin( wxCoord x, wxCoord y ) + { m_pimpl->SetDeviceLocalOrigin( x, y ); } + + + // ----------------------------------------------- // the actual drawing API bool FloodFill(wxCoord x, wxCoord y, const wxColour& col, - int style = wxFLOOD_SURFACE) + wxFloodFillStyle style = wxFLOOD_SURFACE) { return m_pimpl->DoFloodFill(x, y, col, style); } bool FloodFill(const wxPoint& pt, const wxColour& col, - int style = wxFLOOD_SURFACE) + wxFloodFillStyle style = wxFLOOD_SURFACE) { return m_pimpl->DoFloodFill(pt.x, pt.y, col, style); } // fill the area specified by rect with a radial gradient, starting from @@ -756,9 +1074,9 @@ public: void GradientFillConcentric(const wxRect& rect, const wxColour& initialColour, const wxColour& destColour) - { m_pimpl->GradientFillConcentric(rect, initialColour, destColour, - wxPoint(rect.GetWidth() / 2, - rect.GetHeight() / 2)); } + { m_pimpl->DoGradientFillConcentric( rect, initialColour, destColour, + wxPoint(rect.GetWidth() / 2, + rect.GetHeight() / 2)); } void GradientFillConcentric(const wxRect& rect, const wxColour& initialColour, @@ -815,24 +1133,31 @@ public: void DrawLines(int n, wxPoint points[], wxCoord xoffset = 0, wxCoord yoffset = 0) { m_pimpl->DoDrawLines(n, points, xoffset, yoffset); } - void DrawLines(const wxList *list, + void DrawLines(const wxPointList *list, wxCoord xoffset = 0, wxCoord yoffset = 0) { m_pimpl->DrawLines( list, xoffset, yoffset ); } +#if WXWIN_COMPATIBILITY_2_8 + wxDEPRECATED( void DrawLines(const wxList *list, + wxCoord xoffset = 0, wxCoord yoffset = 0) ); +#endif // WXWIN_COMPATIBILITY_2_8 void DrawPolygon(int n, wxPoint points[], wxCoord xoffset = 0, wxCoord yoffset = 0, - int fillStyle = wxODDEVEN_RULE) + wxPolygonFillMode fillStyle = wxODDEVEN_RULE) { m_pimpl->DoDrawPolygon(n, points, xoffset, yoffset, fillStyle); } - - void DrawPolygon(const wxList *list, + void DrawPolygon(const wxPointList *list, wxCoord xoffset = 0, wxCoord yoffset = 0, - int fillStyle = wxODDEVEN_RULE) + wxPolygonFillMode fillStyle = wxODDEVEN_RULE) { m_pimpl->DrawPolygon( list, xoffset, yoffset, fillStyle ); } - void DrawPolyPolygon(int n, int count[], wxPoint points[], wxCoord xoffset = 0, wxCoord yoffset = 0, - int fillStyle = wxODDEVEN_RULE) + wxPolygonFillMode fillStyle = wxODDEVEN_RULE) { m_pimpl->DoDrawPolyPolygon(n, count, points, xoffset, yoffset, fillStyle); } +#if WXWIN_COMPATIBILITY_2_8 + wxDEPRECATED( void DrawPolygon(const wxList *list, + wxCoord xoffset = 0, wxCoord yoffset = 0, + wxPolygonFillMode fillStyle = wxODDEVEN_RULE) ); +#endif // WXWIN_COMPATIBILITY_2_8 void DrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) { m_pimpl->DoDrawRectangle(x, y, width, height); } @@ -853,7 +1178,7 @@ public: void DrawCircle(wxCoord x, wxCoord y, wxCoord radius) { m_pimpl->DoDrawEllipse(x - radius, y - radius, 2*radius, 2*radius); } void DrawCircle(const wxPoint& pt, wxCoord radius) - { m_pimpl->DrawCircle(pt.x, pt.y, radius); } + { m_pimpl->DoDrawEllipse(pt.x - radius, pt.y - radius, 2*radius, 2*radius); } void DrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height) { m_pimpl->DoDrawEllipse(x, y, width, height); } @@ -874,49 +1199,6 @@ public: bool useMask = false) { m_pimpl->DoDrawBitmap(bmp, pt.x, pt.y, useMask); } - virtual void DrawScaledBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, wxCoord w, wxCoord h, bool useMask = false, int quality = wxIMAGE_QUALITY_NORMAL) - { - if (bmp.GetWidth() != w || bmp.GetHeight() != h) - { - if (quality != wxIMAGE_QUALITY_HIGH) - quality = wxIMAGE_QUALITY_NORMAL; - wxImage tmpImg = bmp.ConvertToImage(); - tmpImg.Rescale( w, h, quality ); - wxBitmap scaledBmp(tmpImg); - m_pimpl->DoDrawBitmap(scaledBmp, x, y, useMask); - } - else - m_pimpl->DoDrawBitmap(bmp, x, y, useMask); - } - virtual void DrawScaledBitmap(const wxBitmap &bmp, const wxPoint& pt, const wxSize& sz, bool useMask = false, int quality = wxIMAGE_QUALITY_NORMAL) - { - if (bmp.GetWidth() != sz.x || bmp.GetHeight() != sz.y) - { - if (quality != wxIMAGE_QUALITY_HIGH) - quality = wxIMAGE_QUALITY_NORMAL; - wxImage tmpImg = bmp.ConvertToImage(); - tmpImg.Rescale( sz.x, sz.y, quality ); - wxBitmap scaledBmp(tmpImg); - m_pimpl->DoDrawBitmap(scaledBmp, pt.x, pt.y, useMask); - } - else - m_pimpl->DoDrawBitmap(bmp, pt.x, pt.y, useMask); - } - virtual void DrawScaledBitmap(const wxBitmap &bmp, const wxRect& rect, bool useMask = false, int quality = wxIMAGE_QUALITY_NORMAL) - { - if (bmp.GetWidth() != rect.width || bmp.GetHeight() != rect.height) - { - if (quality != wxIMAGE_QUALITY_HIGH) - quality = wxIMAGE_QUALITY_NORMAL; - wxImage tmpImg = bmp.ConvertToImage(); - tmpImg.Rescale( rect.width, rect.height, quality ); - wxBitmap scaledBmp(tmpImg); - m_pimpl->DoDrawBitmap(scaledBmp, rect.x, rect.y, useMask); - } - else - m_pimpl->DoDrawBitmap(bmp, rect.x, rect.y, useMask); - } - void DrawText(const wxString& text, wxCoord x, wxCoord y) { m_pimpl->DoDrawText(text, x, y); } void DrawText(const wxString& text, const wxPoint& pt) @@ -936,35 +1218,36 @@ public: const wxRect& rect, int alignment = wxALIGN_LEFT | wxALIGN_TOP, int indexAccel = -1, - wxRect *rectBounding = NULL) - { m_pimpl->DrawLabel( text, image, rect, alignment, indexAccel, rectBounding ); } + wxRect *rectBounding = NULL); void DrawLabel(const wxString& text, const wxRect& rect, int alignment = wxALIGN_LEFT | wxALIGN_TOP, int indexAccel = -1) - { m_pimpl->DrawLabel(text, wxNullBitmap, rect, alignment, indexAccel); } + { DrawLabel(text, wxNullBitmap, rect, alignment, indexAccel); } bool Blit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height, wxDC *source, wxCoord xsrc, wxCoord ysrc, - int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord) + wxRasterOperationMode rop = wxCOPY, bool useMask = false, + wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord) { return m_pimpl->DoBlit(xdest, ydest, width, height, source, xsrc, ysrc, rop, useMask, xsrcMask, ysrcMask); } bool Blit(const wxPoint& destPt, const wxSize& sz, wxDC *source, const wxPoint& srcPt, - int rop = wxCOPY, bool useMask = false, const wxPoint& srcPtMask = wxDefaultPosition) + wxRasterOperationMode rop = wxCOPY, bool useMask = false, + const wxPoint& srcPtMask = wxDefaultPosition) { return m_pimpl->DoBlit(destPt.x, destPt.y, sz.x, sz.y, source, srcPt.x, srcPt.y, rop, useMask, srcPtMask.x, srcPtMask.y); } - bool StretchBlit(wxCoord dstX, wxCoord dstY, + bool StretchBlit(wxCoord dstX, wxCoord dstY, wxCoord dstWidth, wxCoord dstHeight, - wxDC *source, + wxDC *source, wxCoord srcX, wxCoord srcY, wxCoord srcWidth, wxCoord srcHeight, - int rop = wxCOPY, bool useMask = false, + wxRasterOperationMode rop = wxCOPY, bool useMask = false, wxCoord srcMaskX = wxDefaultCoord, wxCoord srcMaskY = wxDefaultCoord) { return m_pimpl->DoStretchBlit(dstX, dstY, dstWidth, dstHeight, @@ -972,7 +1255,8 @@ public: } bool StretchBlit(const wxPoint& dstPt, const wxSize& dstSize, wxDC *source, const wxPoint& srcPt, const wxSize& srcSize, - int rop = wxCOPY, bool useMask = false, const wxPoint& srcMaskPt = wxDefaultPosition) + wxRasterOperationMode rop = wxCOPY, bool useMask = false, + const wxPoint& srcMaskPt = wxDefaultPosition) { return m_pimpl->DoStretchBlit(dstPt.x, dstPt.y, dstSize.x, dstSize.y, source, srcPt.x, srcPt.y, srcSize.x, srcSize.y, rop, useMask, srcMaskPt.x, srcMaskPt.y); @@ -984,16 +1268,14 @@ public: } #if wxUSE_SPLINES - // TODO: this API needs fixing (wxPointList, why (!const) "wxList *"?) void DrawSpline(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord x3, wxCoord y3) { m_pimpl->DrawSpline(x1,y1,x2,y2,x3,y3); } void DrawSpline(int n, wxPoint points[]) { m_pimpl->DrawSpline(n,points); } - - void DrawSpline(wxList *points) - { m_pimpl->DoDrawSpline(points); } + void DrawSpline(const wxPointList *points) + { m_pimpl->DrawSpline(points); } #endif // wxUSE_SPLINES @@ -1007,993 +1289,231 @@ public: wxDEPRECATED( void GetLogicalOrigin(long *x, long *y) const ); wxDEPRECATED( void GetDeviceOrigin(long *x, long *y) const ); wxDEPRECATED( void GetClippingBox(long *x, long *y, long *w, long *h) const ); -#endif // WXWIN_COMPATIBILITY_2_8 + wxDEPRECATED( void DrawObject(wxDrawObject* drawobject) ); +#endif // WXWIN_COMPATIBILITY_2_8 -protected: - wxImplDC *m_pimpl; - -private: - DECLARE_ABSTRACT_CLASS(wxImplDC) -} +#ifdef __WXMSW__ + // GetHDC() is the simplest way to retrieve an HDC From a wxDC but only + // works if this wxDC is GDI-based and fails for GDI+ contexts (and + // anything else without HDC, e.g. wxPostScriptDC) + WXHDC GetHDC() const; + // don't use these methods manually, use GetTempHDC() instead + virtual WXHDC AcquireHDC() { return GetHDC(); } + virtual void ReleaseHDC(WXHDC WXUNUSED(hdc)) { } -#else // wxUSE_NEW_DC + // helper class holding the result of GetTempHDC() with std::auto_ptr<>-like + // semantics, i.e. it is moved when copied + class TempHDC + { + public: + TempHDC(wxDC& dc) + : m_dc(dc), + m_hdc(dc.AcquireHDC()) + { + } + TempHDC(const TempHDC& thdc) + : m_dc(thdc.m_dc), + m_hdc(thdc.m_hdc) + { + const_cast(thdc).m_hdc = 0; + } -class WXDLLIMPEXP_FWD_CORE wxDC; -class WXDLLIMPEXP_FWD_CORE wxDCBase; + ~TempHDC() + { + if ( m_hdc ) + m_dc.ReleaseHDC(m_hdc); + } -class WXDLLEXPORT wxDrawObject -{ -public: + WXHDC GetHDC() const { return m_hdc; } - wxDrawObject() - : m_isBBoxValid(false) - , m_minX(0), m_minY(0), m_maxX(0), m_maxY(0) - { } + private: + wxDC& m_dc; + WXHDC m_hdc; - virtual ~wxDrawObject() { } + wxDECLARE_NO_ASSIGN_CLASS(TempHDC); + }; - virtual void Draw(wxDCBase&) const { } + // GetTempHDC() also works for wxGCDC (but still not for wxPostScriptDC &c) + TempHDC GetTempHDC() { return TempHDC(*this); } +#endif // __WXMSW__ - virtual void CalcBoundingBox(wxCoord x, wxCoord y) +#if wxUSE_GRAPHICS_CONTEXT + virtual wxGraphicsContext* GetGraphicsContext() const { - if ( m_isBBoxValid ) - { - if ( x < m_minX ) m_minX = x; - if ( y < m_minY ) m_minY = y; - if ( x > m_maxX ) m_maxX = x; - if ( y > m_maxY ) m_maxY = y; - } - else - { - m_isBBoxValid = true; - - m_minX = x; - m_minY = y; - m_maxX = x; - m_maxY = y; - } + return m_pimpl->GetGraphicsContext(); } - - void ResetBoundingBox() + virtual void SetGraphicsContext( wxGraphicsContext* ctx ) { - m_isBBoxValid = false; - - m_minX = m_maxX = m_minY = m_maxY = 0; + m_pimpl->SetGraphicsContext(ctx); } +#endif - // Get the final bounding box of the PostScript or Metafile picture. - - wxCoord MinX() const { return m_minX; } - wxCoord MaxX() const { return m_maxX; } - wxCoord MinY() const { return m_minY; } - wxCoord MaxY() const { return m_maxY; } +protected: + // ctor takes ownership of the pointer + wxDC(wxDCImpl *pimpl) : m_pimpl(pimpl) { } - //to define the type of object for derived objects - virtual int GetType()=0; + wxDCImpl * const m_pimpl; -protected: - //for boundingbox calculation - bool m_isBBoxValid:1; - //for boundingbox calculation - wxCoord m_minX, m_minY, m_maxX, m_maxY; +private: + DECLARE_ABSTRACT_CLASS(wxDC) + wxDECLARE_NO_COPY_CLASS(wxDC); }; -// --------------------------------------------------------------------------- -// global variables -// --------------------------------------------------------------------------- - -// --------------------------------------------------------------------------- -// wxDC is the device context - object on which any drawing is done -// --------------------------------------------------------------------------- +// ---------------------------------------------------------------------------- +// helper class: you can use it to temporarily change the DC text colour and +// restore it automatically when the object goes out of scope +// ---------------------------------------------------------------------------- -class WXDLLEXPORT wxDCBase : public wxObject +class WXDLLIMPEXP_CORE wxDCTextColourChanger { public: - wxDCBase(); - virtual ~wxDCBase(); - - // graphic primitives - // ------------------ + wxDCTextColourChanger(wxDC& dc) : m_dc(dc), m_colFgOld() { } - virtual void DrawObject(wxDrawObject* drawobject) + wxDCTextColourChanger(wxDC& dc, const wxColour& col) : m_dc(dc) { - drawobject->Draw(*this); - CalcBoundingBox(drawobject->MinX(),drawobject->MinY()); - CalcBoundingBox(drawobject->MaxX(),drawobject->MaxY()); + Set(col); } - bool FloodFill(wxCoord x, wxCoord y, const wxColour& col, - int style = wxFLOOD_SURFACE) - { return DoFloodFill(x, y, col, style); } - bool FloodFill(const wxPoint& pt, const wxColour& col, - int style = wxFLOOD_SURFACE) - { return DoFloodFill(pt.x, pt.y, col, style); } - - // fill the area specified by rect with a radial gradient, starting from - // initialColour in the centre of the cercle and fading to destColour. - void GradientFillConcentric(const wxRect& rect, - const wxColour& initialColour, - const wxColour& destColour) - { GradientFillConcentric(rect, initialColour, destColour, - wxPoint(rect.GetWidth() / 2, - rect.GetHeight() / 2)); } - - void GradientFillConcentric(const wxRect& rect, - const wxColour& initialColour, - const wxColour& destColour, - const wxPoint& circleCenter) - { DoGradientFillConcentric(rect, initialColour, destColour, circleCenter); } - - // fill the area specified by rect with a linear gradient - void GradientFillLinear(const wxRect& rect, - const wxColour& initialColour, - const wxColour& destColour, - wxDirection nDirection = wxEAST) - { DoGradientFillLinear(rect, initialColour, destColour, nDirection); } + ~wxDCTextColourChanger() + { + if ( m_colFgOld.IsOk() ) + m_dc.SetTextForeground(m_colFgOld); + } - bool GetPixel(wxCoord x, wxCoord y, wxColour *col) const - { return DoGetPixel(x, y, col); } - bool GetPixel(const wxPoint& pt, wxColour *col) const - { return DoGetPixel(pt.x, pt.y, col); } + void Set(const wxColour& col) + { + if ( !m_colFgOld.IsOk() ) + m_colFgOld = m_dc.GetTextForeground(); + m_dc.SetTextForeground(col); + } - void DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) - { DoDrawLine(x1, y1, x2, y2); } - void DrawLine(const wxPoint& pt1, const wxPoint& pt2) - { DoDrawLine(pt1.x, pt1.y, pt2.x, pt2.y); } +private: + wxDC& m_dc; - void CrossHair(wxCoord x, wxCoord y) - { DoCrossHair(x, y); } - void CrossHair(const wxPoint& pt) - { DoCrossHair(pt.x, pt.y); } + wxColour m_colFgOld; - void DrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, - wxCoord xc, wxCoord yc) - { DoDrawArc(x1, y1, x2, y2, xc, yc); } - void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre) - { DoDrawArc(pt1.x, pt1.y, pt2.x, pt2.y, centre.x, centre.y); } + wxDECLARE_NO_COPY_CLASS(wxDCTextColourChanger); +}; - void DrawCheckMark(wxCoord x, wxCoord y, - wxCoord width, wxCoord height) - { DoDrawCheckMark(x, y, width, height); } - void DrawCheckMark(const wxRect& rect) - { DoDrawCheckMark(rect.x, rect.y, rect.width, rect.height); } +// ---------------------------------------------------------------------------- +// helper class: you can use it to temporarily change the DC pen and +// restore it automatically when the object goes out of scope +// ---------------------------------------------------------------------------- - void DrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h, - double sa, double ea) - { DoDrawEllipticArc(x, y, w, h, sa, ea); } - void DrawEllipticArc(const wxPoint& pt, const wxSize& sz, - double sa, double ea) - { DoDrawEllipticArc(pt.x, pt.y, sz.x, sz.y, sa, ea); } +class WXDLLIMPEXP_CORE wxDCPenChanger +{ +public: + wxDCPenChanger(wxDC& dc, const wxPen& pen) : m_dc(dc), m_penOld(dc.GetPen()) + { + m_dc.SetPen(pen); + } - void DrawPoint(wxCoord x, wxCoord y) - { DoDrawPoint(x, y); } - void DrawPoint(const wxPoint& pt) - { DoDrawPoint(pt.x, pt.y); } + ~wxDCPenChanger() + { + if ( m_penOld.IsOk() ) + m_dc.SetPen(m_penOld); + } - void DrawLines(int n, wxPoint points[], - wxCoord xoffset = 0, wxCoord yoffset = 0) - { DoDrawLines(n, points, xoffset, yoffset); } - void DrawLines(const wxList *list, - wxCoord xoffset = 0, wxCoord yoffset = 0); +private: + wxDC& m_dc; - void DrawPolygon(int n, wxPoint points[], - wxCoord xoffset = 0, wxCoord yoffset = 0, - int fillStyle = wxODDEVEN_RULE) - { DoDrawPolygon(n, points, xoffset, yoffset, fillStyle); } + wxPen m_penOld; - void DrawPolygon(const wxList *list, - wxCoord xoffset = 0, wxCoord yoffset = 0, - int fillStyle = wxODDEVEN_RULE); + wxDECLARE_NO_COPY_CLASS(wxDCPenChanger); +}; - void DrawPolyPolygon(int n, int count[], wxPoint points[], - wxCoord xoffset = 0, wxCoord yoffset = 0, - int fillStyle = wxODDEVEN_RULE) - { DoDrawPolyPolygon(n, count, points, xoffset, yoffset, fillStyle); } +// ---------------------------------------------------------------------------- +// helper class: you can use it to temporarily change the DC brush and +// restore it automatically when the object goes out of scope +// ---------------------------------------------------------------------------- - void DrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) - { DoDrawRectangle(x, y, width, height); } - void DrawRectangle(const wxPoint& pt, const wxSize& sz) - { DoDrawRectangle(pt.x, pt.y, sz.x, sz.y); } - void DrawRectangle(const wxRect& rect) - { DoDrawRectangle(rect.x, rect.y, rect.width, rect.height); } +class WXDLLIMPEXP_CORE wxDCBrushChanger +{ +public: + wxDCBrushChanger(wxDC& dc, const wxBrush& brush) : m_dc(dc), m_brushOld(dc.GetBrush()) + { + m_dc.SetBrush(brush); + } - void DrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, - double radius) - { DoDrawRoundedRectangle(x, y, width, height, radius); } - void DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz, - double radius) - { DoDrawRoundedRectangle(pt.x, pt.y, sz.x, sz.y, radius); } - void DrawRoundedRectangle(const wxRect& r, double radius) - { DoDrawRoundedRectangle(r.x, r.y, r.width, r.height, radius); } + ~wxDCBrushChanger() + { + if ( m_brushOld.IsOk() ) + m_dc.SetBrush(m_brushOld); + } - void DrawCircle(wxCoord x, wxCoord y, wxCoord radius) - { DoDrawEllipse(x - radius, y - radius, 2*radius, 2*radius); } - void DrawCircle(const wxPoint& pt, wxCoord radius) - { DrawCircle(pt.x, pt.y, radius); } +private: + wxDC& m_dc; - void DrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height) - { DoDrawEllipse(x, y, width, height); } - void DrawEllipse(const wxPoint& pt, const wxSize& sz) - { DoDrawEllipse(pt.x, pt.y, sz.x, sz.y); } - void DrawEllipse(const wxRect& rect) - { DoDrawEllipse(rect.x, rect.y, rect.width, rect.height); } + wxBrush m_brushOld; - void DrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) - { DoDrawIcon(icon, x, y); } - void DrawIcon(const wxIcon& icon, const wxPoint& pt) - { DoDrawIcon(icon, pt.x, pt.y); } + wxDECLARE_NO_COPY_CLASS(wxDCBrushChanger); +}; - void DrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, - bool useMask = false) - { DoDrawBitmap(bmp, x, y, useMask); } - void DrawBitmap(const wxBitmap &bmp, const wxPoint& pt, - bool useMask = false) - { DoDrawBitmap(bmp, pt.x, pt.y, useMask); } +// ---------------------------------------------------------------------------- +// another small helper class: sets the clipping region in its ctor and +// destroys it in the dtor +// ---------------------------------------------------------------------------- - virtual void DrawScaledBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, wxCoord w, wxCoord h, bool useMask = false, int quality = wxIMAGE_QUALITY_NORMAL) - { - if (bmp.GetWidth() != w || bmp.GetHeight() != h) - { - if (quality != wxIMAGE_QUALITY_HIGH) - quality = wxIMAGE_QUALITY_NORMAL; - wxImage tmpImg = bmp.ConvertToImage(); - tmpImg.Rescale( w, h, quality ); - wxBitmap scaledBmp(tmpImg); - DoDrawBitmap(scaledBmp, x, y, useMask); - } - else - DoDrawBitmap(bmp, x, y, useMask); - } - virtual void DrawScaledBitmap(const wxBitmap &bmp, const wxPoint& pt, const wxSize& sz, bool useMask = false, int quality = wxIMAGE_QUALITY_NORMAL) - { - if (bmp.GetWidth() != sz.x || bmp.GetHeight() != sz.y) - { - if (quality != wxIMAGE_QUALITY_HIGH) - quality = wxIMAGE_QUALITY_NORMAL; - wxImage tmpImg = bmp.ConvertToImage(); - tmpImg.Rescale( sz.x, sz.y, quality ); - wxBitmap scaledBmp(tmpImg); - DoDrawBitmap(scaledBmp, pt.x, pt.y, useMask); - } - else - DoDrawBitmap(bmp, pt.x, pt.y, useMask); - } - virtual void DrawScaledBitmap(const wxBitmap &bmp, const wxRect& rect, bool useMask = false, int quality = wxIMAGE_QUALITY_NORMAL) - { - if (bmp.GetWidth() != rect.width || bmp.GetHeight() != rect.height) - { - if (quality != wxIMAGE_QUALITY_HIGH) - quality = wxIMAGE_QUALITY_NORMAL; - wxImage tmpImg = bmp.ConvertToImage(); - tmpImg.Rescale( rect.width, rect.height, quality ); - wxBitmap scaledBmp(tmpImg); - DoDrawBitmap(scaledBmp, rect.x, rect.y, useMask); - } - else - DoDrawBitmap(bmp, rect.x, rect.y, useMask); - } +class WXDLLIMPEXP_CORE wxDCClipper +{ +public: + wxDCClipper(wxDC& dc, const wxRegion& r) : m_dc(dc) + { dc.SetClippingRegion(r.GetBox()); } + wxDCClipper(wxDC& dc, const wxRect& r) : m_dc(dc) + { dc.SetClippingRegion(r.x, r.y, r.width, r.height); } + wxDCClipper(wxDC& dc, wxCoord x, wxCoord y, wxCoord w, wxCoord h) : m_dc(dc) + { dc.SetClippingRegion(x, y, w, h); } - void DrawText(const wxString& text, wxCoord x, wxCoord y) - { DoDrawText(text, x, y); } - void DrawText(const wxString& text, const wxPoint& pt) - { DoDrawText(text, pt.x, pt.y); } + ~wxDCClipper() { m_dc.DestroyClippingRegion(); } - void DrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle) - { DoDrawRotatedText(text, x, y, angle); } - void DrawRotatedText(const wxString& text, const wxPoint& pt, double angle) - { DoDrawRotatedText(text, pt.x, pt.y, angle); } +private: + wxDC& m_dc; - // this version puts both optional bitmap and the text into the given - // rectangle and aligns is as specified by alignment parameter; it also - // will emphasize the character with the given index if it is != -1 and - // return the bounding rectangle if required - virtual void DrawLabel(const wxString& text, - const wxBitmap& image, - const wxRect& rect, - int alignment = wxALIGN_LEFT | wxALIGN_TOP, - int indexAccel = -1, - wxRect *rectBounding = NULL); + wxDECLARE_NO_COPY_CLASS(wxDCClipper); +}; - void DrawLabel(const wxString& text, const wxRect& rect, - int alignment = wxALIGN_LEFT | wxALIGN_TOP, - int indexAccel = -1) - { DrawLabel(text, wxNullBitmap, rect, alignment, indexAccel); } +// ---------------------------------------------------------------------------- +// helper class: you can use it to temporarily change the DC font and +// restore it automatically when the object goes out of scope +// ---------------------------------------------------------------------------- - bool Blit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height, - wxDC *source, wxCoord xsrc, wxCoord ysrc, - int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord) +class WXDLLIMPEXP_CORE wxDCFontChanger +{ +public: + wxDCFontChanger(wxDC& dc) + : m_dc(dc), m_fontOld() { - return DoBlit(xdest, ydest, width, height, - source, xsrc, ysrc, rop, useMask, xsrcMask, ysrcMask); } - bool Blit(const wxPoint& destPt, const wxSize& sz, - wxDC *source, const wxPoint& srcPt, - int rop = wxCOPY, bool useMask = false, const wxPoint& srcPtMask = wxDefaultPosition) + + wxDCFontChanger(wxDC& dc, const wxFont& font) + : m_dc(dc), m_fontOld(dc.GetFont()) { - return DoBlit(destPt.x, destPt.y, sz.x, sz.y, - source, srcPt.x, srcPt.y, rop, useMask, srcPtMask.x, srcPtMask.y); + m_dc.SetFont(font); } - bool StretchBlit(wxCoord dstX, wxCoord dstY, - wxCoord dstWidth, wxCoord dstHeight, - wxDC *source, - wxCoord srcX, wxCoord srcY, - wxCoord srcWidth, wxCoord srcHeight, - int rop = wxCOPY, bool useMask = false, - wxCoord srcMaskX = wxDefaultCoord, wxCoord srcMaskY = wxDefaultCoord) + void Set(const wxFont& font) { - return DoStretchBlit(dstX, dstY, dstWidth, dstHeight, - source, srcX, srcY, srcWidth, srcHeight, rop, useMask, srcMaskX, srcMaskY); - } - bool StretchBlit(const wxPoint& dstPt, const wxSize& dstSize, - wxDC *source, const wxPoint& srcPt, const wxSize& srcSize, - int rop = wxCOPY, bool useMask = false, const wxPoint& srcMaskPt = wxDefaultPosition) - { - return DoStretchBlit(dstPt.x, dstPt.y, dstSize.x, dstSize.y, - source, srcPt.x, srcPt.y, srcSize.x, srcSize.y, rop, useMask, srcMaskPt.x, srcMaskPt.y); - } - - wxBitmap GetAsBitmap(const wxRect *subrect = (const wxRect *) NULL) const - { - return DoGetAsBitmap(subrect); - } - -#if wxUSE_SPLINES - // TODO: this API needs fixing (wxPointList, why (!const) "wxList *"?) - void DrawSpline(wxCoord x1, wxCoord y1, - wxCoord x2, wxCoord y2, - wxCoord x3, wxCoord y3); - void DrawSpline(int n, wxPoint points[]); - - void DrawSpline(wxList *points) { DoDrawSpline(points); } -#endif // wxUSE_SPLINES - - // Eventually we will have wxUSE_GENERIC_DRAWELLIPSE -#ifdef __WXWINCE__ - //! Generic method to draw ellipses, circles and arcs with current pen and brush. - /*! \param x Upper left corner of bounding box. - * \param y Upper left corner of bounding box. - * \param w Width of bounding box. - * \param h Height of bounding box. - * \param sa Starting angle of arc - * (counterclockwise, start at 3 o'clock, 360 is full circle). - * \param ea Ending angle of arc. - * \param angle Rotation angle, the Arc will be rotated after - * calculating begin and end. - */ - void DrawEllipticArcRot( wxCoord x, wxCoord y, - wxCoord width, wxCoord height, - double sa = 0, double ea = 0, double angle = 0 ) - { DoDrawEllipticArcRot( x, y, width, height, sa, ea, angle ); } - - void DrawEllipticArcRot( const wxPoint& pt, - const wxSize& sz, - double sa = 0, double ea = 0, double angle = 0 ) - { DoDrawEllipticArcRot( pt.x, pt.y, sz.x, sz.y, sa, ea, angle ); } - - void DrawEllipticArcRot( const wxRect& rect, - double sa = 0, double ea = 0, double angle = 0 ) - { DoDrawEllipticArcRot( rect.x, rect.y, rect.width, rect.height, sa, ea, angle ); } - - virtual void DoDrawEllipticArcRot( wxCoord x, wxCoord y, - wxCoord w, wxCoord h, - double sa = 0, double ea = 0, double angle = 0 ); - - //! Rotates points around center. - /*! This is a quite straight method, it calculates in pixels - * and so it produces rounding errors. - * \param points The points inside will be rotated. - * \param angle Rotating angle (counterclockwise, start at 3 o'clock, 360 is full circle). - * \param center Center of rotation. - */ - void Rotate( wxList* points, double angle, wxPoint center = wxPoint(0,0) ); - - // used by DrawEllipticArcRot - // Careful: wxList gets filled with points you have to delete later. - void CalculateEllipticPoints( wxList* points, - wxCoord xStart, wxCoord yStart, - wxCoord w, wxCoord h, - double sa, double ea ); -#endif - - // global DC operations - // -------------------- - - virtual void Clear() = 0; - - virtual bool StartDoc(const wxString& WXUNUSED(message)) { return true; } - virtual void EndDoc() { } - - virtual void StartPage() { } - virtual void EndPage() { } - -#if WXWIN_COMPATIBILITY_2_6 - wxDEPRECATED( void BeginDrawing() ); - wxDEPRECATED( void EndDrawing() ); -#endif // WXWIN_COMPATIBILITY_2_6 - - - // set objects to use for drawing - // ------------------------------ - - virtual void SetFont(const wxFont& font) = 0; - virtual void SetPen(const wxPen& pen) = 0; - virtual void SetBrush(const wxBrush& brush) = 0; - virtual void SetBackground(const wxBrush& brush) = 0; - virtual void SetBackgroundMode(int mode) = 0; -#if wxUSE_PALETTE - virtual void SetPalette(const wxPalette& palette) = 0; -#endif // wxUSE_PALETTE - - // clipping region - // --------------- - - void SetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height) - { DoSetClippingRegion(x, y, width, height); } - void SetClippingRegion(const wxPoint& pt, const wxSize& sz) - { DoSetClippingRegion(pt.x, pt.y, sz.x, sz.y); } - void SetClippingRegion(const wxRect& rect) - { DoSetClippingRegion(rect.x, rect.y, rect.width, rect.height); } - void SetClippingRegion(const wxRegion& region) - { DoSetClippingRegionAsRegion(region); } - - virtual void DestroyClippingRegion() { ResetClipping(); } - - void GetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const - { DoGetClippingBox(x, y, w, h); } - void GetClippingBox(wxRect& rect) const - { - DoGetClippingBox(&rect.x, &rect.y, &rect.width, &rect.height); - } - - // text extent - // ----------- - - virtual wxCoord GetCharHeight() const = 0; - virtual wxCoord GetCharWidth() const = 0; - - // only works for single line strings - void GetTextExtent(const wxString& string, - wxCoord *x, wxCoord *y, - wxCoord *descent = NULL, - wxCoord *externalLeading = NULL, - const wxFont *theFont = NULL) const - { DoGetTextExtent(string, x, y, descent, externalLeading, theFont); } - - wxSize GetTextExtent(const wxString& string) const - { - wxCoord w, h; - DoGetTextExtent(string, &w, &h); - return wxSize(w, h); - } - - // works for single as well as multi-line strings - virtual void GetMultiLineTextExtent(const wxString& string, - wxCoord *width, - wxCoord *height, - wxCoord *heightLine = NULL, - const wxFont *font = NULL) const; - - wxSize GetMultiLineTextExtent(const wxString& string) const - { - wxCoord w, h; - GetMultiLineTextExtent(string, &w, &h); - return wxSize(w, h); - } - - // Measure cumulative width of text after each character - bool GetPartialTextExtents(const wxString& text, wxArrayInt& widths) const - { return DoGetPartialTextExtents(text, widths); } - - - // size and resolution - // ------------------- - - // in device units - void GetSize(int *width, int *height) const - { DoGetSize(width, height); } - wxSize GetSize() const - { - int w, h; - DoGetSize(&w, &h); - - return wxSize(w, h); - } - - // in mm - void GetSizeMM(int* width, int* height) const - { DoGetSizeMM(width, height); } - wxSize GetSizeMM() const - { - int w, h; - DoGetSizeMM(&w, &h); - - return wxSize(w, h); - } - - // query DC capabilities - // --------------------- - - virtual bool CanDrawBitmap() const = 0; - virtual bool CanGetTextExtent() const = 0; - - // colour depth - virtual int GetDepth() const = 0; - - // Resolution in Pixels per inch - virtual wxSize GetPPI() const = 0; - - virtual bool Ok() const { return IsOk(); } - virtual bool IsOk() const { return m_ok; } - - // accessors and setters - // --------------------- - - virtual int GetBackgroundMode() const { return m_backgroundMode; } - virtual const wxBrush& GetBackground() const { return m_backgroundBrush; } - virtual const wxBrush& GetBrush() const { return m_brush; } - virtual const wxFont& GetFont() const { return m_font; } - virtual const wxPen& GetPen() const { return m_pen; } - - virtual const wxColour& GetTextForeground() const { return m_textForegroundColour; } - virtual const wxColour& GetTextBackground() const { return m_textBackgroundColour; } - virtual void SetTextForeground(const wxColour& colour) - { m_textForegroundColour = colour; } - virtual void SetTextBackground(const wxColour& colour) - { m_textBackgroundColour = colour; } - - - // coordinates conversions and transforms - // -------------------------------------- - - virtual wxCoord DeviceToLogicalX(wxCoord x) const; - virtual wxCoord DeviceToLogicalY(wxCoord y) const; - virtual wxCoord DeviceToLogicalXRel(wxCoord x) const; - virtual wxCoord DeviceToLogicalYRel(wxCoord y) const; - virtual wxCoord LogicalToDeviceX(wxCoord x) const; - virtual wxCoord LogicalToDeviceY(wxCoord y) const; - virtual wxCoord LogicalToDeviceXRel(wxCoord x) const; - virtual wxCoord LogicalToDeviceYRel(wxCoord y) const; - - virtual void SetMapMode(int mode); - virtual int GetMapMode() const { return m_mappingMode; } - - virtual void SetUserScale(double x, double y); - virtual void GetUserScale(double *x, double *y) const - { - if ( x ) *x = m_userScaleX; - if ( y ) *y = m_userScaleY; - } - - virtual void SetLogicalScale(double x, double y); - virtual void GetLogicalScale(double *x, double *y) - { - if ( x ) *x = m_logicalScaleX; - if ( y ) *y = m_logicalScaleY; - } - - virtual void SetLogicalOrigin(wxCoord x, wxCoord y); - void GetLogicalOrigin(wxCoord *x, wxCoord *y) const - { DoGetLogicalOrigin(x, y); } - wxPoint GetLogicalOrigin() const - { wxCoord x, y; DoGetLogicalOrigin(&x, &y); return wxPoint(x, y); } - - virtual void SetDeviceOrigin(wxCoord x, wxCoord y); - void GetDeviceOrigin(wxCoord *x, wxCoord *y) const - { DoGetDeviceOrigin(x, y); } - wxPoint GetDeviceOrigin() const - { wxCoord x, y; DoGetDeviceOrigin(&x, &y); return wxPoint(x, y); } - - virtual void SetDeviceLocalOrigin( wxCoord x, wxCoord y ); - - virtual void ComputeScaleAndOrigin(); - - // this needs to overidden if the axis is inverted (such - // as when using Postscript, where 0,0 is the lower left - // corner, not the upper left). - virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp); - - // logical functions - // --------------------------- - - virtual int GetLogicalFunction() const { return m_logicalFunction; } - virtual void SetLogicalFunction(int function) = 0; - - // bounding box - // ------------ - - virtual void CalcBoundingBox(wxCoord x, wxCoord y) - { - if ( m_isBBoxValid ) - { - if ( x < m_minX ) m_minX = x; - if ( y < m_minY ) m_minY = y; - if ( x > m_maxX ) m_maxX = x; - if ( y > m_maxY ) m_maxY = y; - } - else - { - m_isBBoxValid = true; - - m_minX = x; - m_minY = y; - m_maxX = x; - m_maxY = y; - } - } - - void ResetBoundingBox() - { - m_isBBoxValid = false; - - m_minX = m_maxX = m_minY = m_maxY = 0; - } - - // Get the final bounding box of the PostScript or Metafile picture. - wxCoord MinX() const { return m_minX; } - wxCoord MaxX() const { return m_maxX; } - wxCoord MinY() const { return m_minY; } - wxCoord MaxY() const { return m_maxY; } - - // misc old functions - // ------------------ - -#if WXWIN_COMPATIBILITY_2_8 - // for compatibility with the old code when wxCoord was long everywhere - wxDEPRECATED( void GetTextExtent(const wxString& string, - long *x, long *y, - long *descent = NULL, - long *externalLeading = NULL, - const wxFont *theFont = NULL) const ); - wxDEPRECATED( void GetLogicalOrigin(long *x, long *y) const ); - wxDEPRECATED( void GetDeviceOrigin(long *x, long *y) const ); - wxDEPRECATED( void GetClippingBox(long *x, long *y, long *w, long *h) const ); -#endif // WXWIN_COMPATIBILITY_2_8 - - // RTL related functions - // --------------------- - - // get or change the layout direction (LTR or RTL) for this dc, - // wxLayout_Default is returned if layout direction is not supported - virtual wxLayoutDirection GetLayoutDirection() const - { return wxLayout_Default; } - virtual void SetLayoutDirection(wxLayoutDirection WXUNUSED(dir)) - { } - -protected: - // the pure virtual functions which should be implemented by wxDC - virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, - int style = wxFLOOD_SURFACE) = 0; - - virtual void DoGradientFillLinear(const wxRect& rect, - const wxColour& initialColour, - const wxColour& destColour, - wxDirection nDirection = wxEAST); - - virtual void DoGradientFillConcentric(const wxRect& rect, - const wxColour& initialColour, - const wxColour& destColour, - const wxPoint& circleCenter); - - virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const = 0; - - virtual void DoDrawPoint(wxCoord x, wxCoord y) = 0; - virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) = 0; - - virtual void DoDrawArc(wxCoord x1, wxCoord y1, - wxCoord x2, wxCoord y2, - wxCoord xc, wxCoord yc) = 0; - virtual void DoDrawCheckMark(wxCoord x, wxCoord y, - wxCoord width, wxCoord height); - virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h, - double sa, double ea) = 0; - - virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) = 0; - virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y, - wxCoord width, wxCoord height, - double radius) = 0; - virtual void DoDrawEllipse(wxCoord x, wxCoord y, - wxCoord width, wxCoord height) = 0; - - virtual void DoCrossHair(wxCoord x, wxCoord y) = 0; - - virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) = 0; - virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, - bool useMask = false) = 0; - - virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y) = 0; - virtual void DoDrawRotatedText(const wxString& text, - wxCoord x, wxCoord y, double angle) = 0; - - virtual bool DoBlit(wxCoord xdest, wxCoord ydest, - wxCoord width, wxCoord height, - wxDC *source, - wxCoord xsrc, wxCoord ysrc, - int rop = wxCOPY, - bool useMask = false, - wxCoord xsrcMask = wxDefaultCoord, - wxCoord ysrcMask = wxDefaultCoord) = 0; - - virtual bool DoStretchBlit(wxCoord xdest, wxCoord ydest, - wxCoord dstWidth, wxCoord dstHeight, - wxDC *source, - wxCoord xsrc, wxCoord ysrc, - wxCoord srcWidth, wxCoord srcHeight, - int rop = wxCOPY, - bool useMask = false, - wxCoord xsrcMask = wxDefaultCoord, - wxCoord ysrcMask = wxDefaultCoord); - - virtual wxBitmap DoGetAsBitmap(const wxRect *WXUNUSED(subrect)) const - { return wxNullBitmap; } - - virtual void DoGetSize(int *width, int *height) const = 0; - virtual void DoGetSizeMM(int* width, int* height) const = 0; - - virtual void DoDrawLines(int n, wxPoint points[], - wxCoord xoffset, wxCoord yoffset) = 0; - virtual void DoDrawPolygon(int n, wxPoint points[], - wxCoord xoffset, wxCoord yoffset, - int fillStyle = wxODDEVEN_RULE) = 0; - virtual void DoDrawPolyPolygon(int n, int count[], wxPoint points[], - wxCoord xoffset, wxCoord yoffset, - int fillStyle); - - virtual void DoSetClippingRegionAsRegion(const wxRegion& region) = 0; - virtual void DoSetClippingRegion(wxCoord x, wxCoord y, - wxCoord width, wxCoord height) = 0; - - virtual void DoGetClippingBox(wxCoord *x, wxCoord *y, - wxCoord *w, wxCoord *h) const - { - if ( x ) - *x = m_clipX1; - if ( y ) - *y = m_clipY1; - if ( w ) - *w = m_clipX2 - m_clipX1; - if ( h ) - *h = m_clipY2 - m_clipY1; - } - - virtual void DoGetLogicalOrigin(wxCoord *x, wxCoord *y) const - { - if ( x ) *x = m_logicalOriginX; - if ( y ) *y = m_logicalOriginY; - } - - virtual void DoGetDeviceOrigin(wxCoord *x, wxCoord *y) const - { - if ( x ) *x = m_deviceOriginX; - if ( y ) *y = m_deviceOriginY; - } - - virtual void DoGetTextExtent(const wxString& string, - wxCoord *x, wxCoord *y, - wxCoord *descent = NULL, - wxCoord *externalLeading = NULL, - const wxFont *theFont = NULL) const = 0; - - virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const; - -#if wxUSE_SPLINES - virtual void DoDrawSpline(wxList *points); -#endif - -protected: - // unset clipping variables (after clipping region was destroyed) - void ResetClipping() - { - m_clipping = false; - - m_clipX1 = m_clipX2 = m_clipY1 = m_clipY2 = 0; - } - - // flags - bool m_colour:1; - bool m_ok:1; - bool m_clipping:1; - bool m_isInteractive:1; - bool m_isBBoxValid:1; - - // coordinate system variables - - // TODO short descriptions of what exactly they are would be nice... - - wxCoord m_logicalOriginX, m_logicalOriginY; - wxCoord m_deviceOriginX, m_deviceOriginY; // Usually 0,0, can be change by user - - wxCoord m_deviceLocalOriginX, m_deviceLocalOriginY; // non-zero if native top-left corner - // is not at 0,0. This was the case under - // Mac's GrafPorts (coordinate system - // used toplevel window's origin) and - // e.g. for Postscript, where the native - // origin in the bottom left corner. - double m_logicalScaleX, m_logicalScaleY; - double m_userScaleX, m_userScaleY; - double m_scaleX, m_scaleY; // calculated from logical scale and user scale - - // Used by SetAxisOrientation() to invert the axes - int m_signX, m_signY; - - // 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; - - // bounding and clipping boxes - wxCoord m_minX, m_minY, m_maxX, m_maxY; - wxCoord m_clipX1, m_clipY1, m_clipX2, m_clipY2; - - int m_logicalFunction; - int m_backgroundMode; - int m_mappingMode; - - // GDI objects - wxPen m_pen; - wxBrush m_brush; - wxBrush m_backgroundBrush; - wxColour m_textForegroundColour; - wxColour m_textBackgroundColour; - wxFont m_font; - -#if wxUSE_PALETTE - wxPalette m_palette; - bool m_hasCustomPalette; -#endif // wxUSE_PALETTE - -private: - DECLARE_NO_COPY_CLASS(wxDCBase) - DECLARE_ABSTRACT_CLASS(wxDCBase) -}; - -#endif // wxUSE_NEW_DC - -// ---------------------------------------------------------------------------- -// now include the declaration of wxDC class -// ---------------------------------------------------------------------------- - -#if defined(__WXPALMOS__) - #include "wx/palmos/dc.h" -#elif defined(__WXMSW__) - #include "wx/msw/dc.h" -#elif defined(__WXMOTIF__) - #include "wx/motif/dc.h" -#elif defined(__WXGTK20__) - #include "wx/gtk/dc.h" -#elif defined(__WXGTK__) - #include "wx/gtk1/dc.h" -#elif defined(__WXX11__) - #include "wx/x11/dc.h" -#elif defined(__WXMGL__) - #include "wx/mgl/dc.h" -#elif defined(__WXDFB__) - #include "wx/dfb/dc.h" -#elif defined(__WXMAC__) - #include "wx/mac/dc.h" -#elif defined(__WXCOCOA__) - #include "wx/cocoa/dc.h" -#elif defined(__WXPM__) - #include "wx/os2/dc.h" -#endif - -#if wxUSE_GRAPHICS_CONTEXT - #include "wx/dcgraph.h" -#endif - -// ---------------------------------------------------------------------------- -// helper class: you can use it to temporarily change the DC text colour and -// restore it automatically when the object goes out of scope -// ---------------------------------------------------------------------------- - -class WXDLLEXPORT wxDCTextColourChanger -{ -public: - wxDCTextColourChanger(wxDC& dc) : m_dc(dc), m_colFgOld() { } - - wxDCTextColourChanger(wxDC& dc, const wxColour& col) : m_dc(dc) - { - Set(col); - } - - ~wxDCTextColourChanger() - { - if ( m_colFgOld.Ok() ) - m_dc.SetTextForeground(m_colFgOld); - } - - void Set(const wxColour& col) - { - if ( !m_colFgOld.Ok() ) - m_colFgOld = m_dc.GetTextForeground(); - m_dc.SetTextForeground(col); - } - -private: - wxDC& m_dc; - - wxColour m_colFgOld; - - DECLARE_NO_COPY_CLASS(wxDCTextColourChanger) -}; - -// ---------------------------------------------------------------------------- -// helper class: you can use it to temporarily change the DC pen and -// restore it automatically when the object goes out of scope -// ---------------------------------------------------------------------------- - -class WXDLLEXPORT wxDCPenChanger -{ -public: - wxDCPenChanger(wxDC& dc, const wxPen& pen) : m_dc(dc), m_penOld(dc.GetPen()) - { - m_dc.SetPen(pen); - } - - ~wxDCPenChanger() - { - if ( m_penOld.Ok() ) - m_dc.SetPen(m_penOld); - } - -private: - wxDC& m_dc; - - wxPen m_penOld; - - DECLARE_NO_COPY_CLASS(wxDCPenChanger) -}; - -// ---------------------------------------------------------------------------- -// helper class: you can use it to temporarily change the DC brush and -// restore it automatically when the object goes out of scope -// ---------------------------------------------------------------------------- - -class WXDLLEXPORT wxDCBrushChanger -{ -public: - wxDCBrushChanger(wxDC& dc, const wxBrush& brush) : m_dc(dc), m_brushOld(dc.GetBrush()) - { - m_dc.SetBrush(brush); + if ( !m_fontOld.IsOk() ) + m_fontOld = m_dc.GetFont(); + m_dc.SetFont(font); } - ~wxDCBrushChanger() + ~wxDCFontChanger() { - if ( m_brushOld.Ok() ) - m_dc.SetBrush(m_brushOld); + if ( m_fontOld.IsOk() ) + m_dc.SetFont(m_fontOld); } private: wxDC& m_dc; - wxBrush m_brushOld; + wxFont m_fontOld; - DECLARE_NO_COPY_CLASS(wxDCBrushChanger) + wxDECLARE_NO_COPY_CLASS(wxDCFontChanger); }; -// ---------------------------------------------------------------------------- -// another small helper class: sets the clipping region in its ctor and -// destroys it in the dtor -// ---------------------------------------------------------------------------- - -class WXDLLEXPORT wxDCClipper -{ -public: - wxDCClipper(wxDC& dc, const wxRegion& r) : m_dc(dc) - { dc.SetClippingRegion(r); } - wxDCClipper(wxDC& dc, const wxRect& r) : m_dc(dc) - { dc.SetClippingRegion(r.x, r.y, r.width, r.height); } - wxDCClipper(wxDC& dc, wxCoord x, wxCoord y, wxCoord w, wxCoord h) : m_dc(dc) - { dc.SetClippingRegion(x, y, w, h); } - - ~wxDCClipper() { m_dc.DestroyClippingRegion(); } - -private: - wxDC& m_dc; - - DECLARE_NO_COPY_CLASS(wxDCClipper) -}; #endif // _WX_DC_H_BASE_