X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/fc4e7a035c2feb382a349e6c9de953923e011fb3..558820fd083635d3e1dc026a56b2f14870cb5c38:/include/wx/dc.h diff --git a/include/wx/dc.h b/include/wx/dc.h index faee757e84..465d2e9588 100644 --- a/include/wx/dc.h +++ b/include/wx/dc.h @@ -1,143 +1,1066 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: dc.h +// Name: wx/dc.h // Purpose: wxDC class // Author: Vadim Zeitlin // Modified by: // Created: 05/25/99 // RCS-ID: $Id$ -// Copyright: (c) wxWindows team +// Copyright: (c) wxWidgets team // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifndef _WX_DC_H_BASE_ #define _WX_DC_H_BASE_ -#ifdef __GNUG__ - #pragma interface "dcbase.h" -#endif - // ---------------------------------------------------------------------------- // headers which we must include here // ---------------------------------------------------------------------------- -#include "wx/object.h" // the base class +#include "wx/object.h" // the base class + +#include "wx/intl.h" // for wxLayoutDirection +#include "wx/cursor.h" // we have member variables of these classes +#include "wx/font.h" // so we can't do without them +#include "wx/colour.h" +#include "wx/bitmap.h" // for wxNullBitmap +#include "wx/brush.h" +#include "wx/pen.h" +#include "wx/palette.h" +#include "wx/dynarray.h" +#include "wx/math.h" +#include "wx/image.h" + + // 1 if using the reorganized DC code +#define wxUSE_NEW_DC 0 + + +#if wxUSE_NEW_DC +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; +#else +class WXDLLIMPEXP_FWD_CORE wxDCBase; +#endif + +class WXDLLEXPORT wxDrawObject +{ +public: + + wxDrawObject() + : m_isBBoxValid(false) + , m_minX(0), m_minY(0), m_maxX(0), m_maxY(0) + { } + + virtual ~wxDrawObject() { } + +#if wxUSE_NEW_DC + virtual void Draw(wxDC&) const { } +#else + virtual void Draw(wxDCBase&) const { } +#endif + + 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; +}; + + +#if wxUSE_NEW_DC + +//----------------------------------------------------------------------------- +// wxDCFactory +//----------------------------------------------------------------------------- + +class WXDLLIMPEXP_FWD_CORE wxImplDC; + +class WXDLLIMPEXP_CORE wxDCFactory +{ +public: + wxDCFactory() {} + virtual ~wxDCFactory() {} + + virtual wxImplDC* CreateWindowDC( wxWindowDC *owner ) = 0; + virtual wxImplDC* CreateWindowDC( wxWindowDC *owner, wxWindow *window ) = 0; + virtual wxImplDC* CreateClientDC( wxClientDC *owner ) = 0; + virtual wxImplDC* CreateClientDC( wxClientDC *owner, wxWindow *window ) = 0; + virtual wxImplDC* CreatePaintDC( wxPaintDC *owner ) = 0; + virtual wxImplDC* CreatePaintDC( wxPaintDC *owner, wxWindow *window ) = 0; + virtual wxImplDC* CreateMemoryDC( wxMemoryDC *owner ) = 0; + virtual wxImplDC* CreateMemoryDC( wxMemoryDC *owner, wxBitmap &bitmap ) = 0; + virtual wxImplDC* CreateMemoryDC( wxMemoryDC *owner, wxDC *dc ) = 0; + virtual wxImplDC* CreateScreenDC( wxScreenDC *owner ) = 0; + + static void SetDCFactory( wxDCFactory *factory ); + static wxDCFactory *GetFactory(); +private: + static wxDCFactory *m_factory; +}; + +//----------------------------------------------------------------------------- +// wxNativeDCFactory +//----------------------------------------------------------------------------- + +class WXDLLIMPEXP_CORE wxNativeDCFactory: public wxDCFactory +{ +public: + wxNativeDCFactory() {} + + virtual wxImplDC* CreateWindowDC( wxWindowDC *owner ); + virtual wxImplDC* CreateWindowDC( wxWindowDC *owner, wxWindow *window ); + virtual wxImplDC* CreateClientDC( wxClientDC *owner ); + virtual wxImplDC* CreateClientDC( wxClientDC *owner, wxWindow *window ); + virtual wxImplDC* CreatePaintDC( wxPaintDC *owner ); + virtual wxImplDC* CreatePaintDC( wxPaintDC *owner, wxWindow *window ); + virtual wxImplDC* CreateMemoryDC( wxMemoryDC *owner ); + virtual wxImplDC* CreateMemoryDC( wxMemoryDC *owner, wxBitmap &bitmap ); + virtual wxImplDC* CreateMemoryDC( wxMemoryDC *owner, wxDC *dc ); + virtual wxImplDC* CreateScreenDC( wxScreenDC *owner ); +}; + +//----------------------------------------------------------------------------- +// wxImplDC +//----------------------------------------------------------------------------- + +class WXDLLIMPEXP_CORE wxImplDC: public wxObject +{ +public: + wxImplDC( wxDC *owner ); + ~wxImplDC(); + + wxDC *GetOwner() const { return m_owner; } + + virtual bool IsOk() const { return m_ok; } + + // query capabilities + + virtual bool CanDrawBitmap() const = 0; + virtual bool CanGetTextExtent() const = 0; + + // query dimension, colour deps, resolution + + virtual void DoGetSize(int *width, int *height) const = 0; + 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 + + virtual bool StartDoc(const wxString& WXUNUSED(message)) { return true; } + virtual void EndDoc() { } + + virtual void StartPage() { } + virtual void EndPage() { } + + // 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; + } + + wxCoord MinX() const { return m_minX; } + 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 void SetPen(const wxPen& pen) = 0; + virtual const wxPen& GetPen() const { return m_pen; } + + virtual void SetBrush(const wxBrush& brush) = 0; + virtual const wxBrush& GetBrush() const { return m_brush; } + + virtual void SetBackground(const wxBrush& brush) = 0; + 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 void SetTextBackground(const wxColour& colour) + { m_textBackgroundColour = colour; } + virtual const wxColour& GetTextBackground() const { return m_textBackgroundColour; } + +#if wxUSE_PALETTE + virtual void SetPalette(const wxPalette& palette) = 0; +#endif // wxUSE_PALETTE + + // logical functions + + virtual void SetLogicalFunction(int function) = 0; + virtual int GetLogicalFunction() const { return m_logicalFunction; } + + // text measurement + + virtual wxCoord GetCharHeight() const = 0; + virtual wxCoord GetCharWidth() const = 0; + virtual void DoGetTextExtent(const wxString& string, + wxCoord *x, wxCoord *y, + wxCoord *descent = NULL, + wxCoord *externalLeading = NULL, + const wxFont *theFont = NULL) const = 0; + virtual void GetMultiLineTextExtent(const wxString& string, + wxCoord *width, + wxCoord *height, + 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; + + 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 DestroyClippingRegion() { ResetClipping(); } + + + // 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); + virtual void DoGetLogicalOrigin(wxCoord *x, wxCoord *y) const + { + if ( x ) *x = m_logicalOriginX; + if ( y ) *y = m_logicalOriginY; + } + + virtual void SetDeviceOrigin(wxCoord x, wxCoord y); + virtual void DoGetDeviceOrigin(wxCoord *x, wxCoord *y) const + { + if ( x ) *x = m_deviceOriginX; + if ( y ) *y = m_deviceOriginY; + } + + virtual void SetDeviceLocalOrigin( wxCoord x, wxCoord y ); + + virtual void ComputeScaleAndOrigin(); + + // this needs to overidden if the axis is inverted + virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp); + + // --------------------------------------------------------- + // the actual drawing API + + 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 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); + + + +#if wxUSE_SPLINES + virtual void DoDrawSpline(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord x3, wxCoord y3); + virtual void DoDrawSpline(int n, wxPoint points[]); + virtual void DoDrawSpline(const wxPointList *points); +#endif + +private: + wxDC *m_owner; + +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 + + 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 + + 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; + int m_backgroundMode; + int m_mappingMode; + + 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_ABSTRACT_CLASS(wxImplDC) +}; + + +class wxDC: public wxObject +{ +public: + wxDC() { m_pimpl = NULL; } + + wxImplDC *GetImpl() + { return m_pimpl; } + + bool IsOk() const + { return m_pimpl && m_pimpl->IsOk(); } + + // query capabilities + + 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); + } + + void GetSizeMM(int* width, int* height) const + { m_pimpl->DoGetSizeMM(width, height); } + wxSize GetSizeMM() const + { + int w, h; + m_pimpl->DoGetSizeMM(&w, &h); + return wxSize(w, h); + } + + int GetDepth() const + { return m_pimpl->GetDepth(); } + wxSize GetPPI() const + { return m_pimpl->GetPPI(); } + + // Right-To-Left (RTL) modes + + void SetLayoutDirection(wxLayoutDirection dir) + { m_pimpl->SetLayoutDirection( dir ); } + wxLayoutDirection GetLayoutDirection() const + { return m_pimpl->GetLayoutDirection(); } + + // page and document + + bool StartDoc(const wxString& message) + { return m_pimpl->StartDoc(message); } + void EndDoc() + { m_pimpl->EndDoc(); } + + void StartPage() + { m_pimpl->StartPage(); } + void EndPage() + { 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 + { return m_pimpl->MaxX(); } + wxCoord MinY() const + { 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 + { return m_pimpl->GetFont(); } + + void SetPen(const wxPen& pen) + { m_pimpl->SetPen( pen ); } + 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->SetBackgroundMode( mode ); } + int GetBackgroundMode() const + { 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 + { 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) + { m_pimpl->SetLogicalFunction(function); } + int GetLogicalFunction() const + { return m_pimpl->GetLogicalFunction(); } + + // text measurement + + wxCoord GetCharHeight() const + { return m_pimpl->GetCharHeight(); } + wxCoord GetCharWidth() const + { return m_pimpl->GetCharWidth(); } + + void GetTextExtent(const wxString& string, + wxCoord *x, wxCoord *y, + wxCoord *descent = NULL, + wxCoord *externalLeading = NULL, + const wxFont *theFont = NULL) const + { m_pimpl->DoGetTextExtent(string, x, y, descent, externalLeading, theFont); } + + wxSize GetTextExtent(const wxString& string) const + { + wxCoord w, h; + 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(); } + + // clipping + + void SetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height) + { m_pimpl->DoSetClippingRegion(x, y, width, height); } + void SetClippingRegion(const wxPoint& pt, const wxSize& sz) + { 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); } + + void DestroyClippingRegion() + { m_pimpl->DestroyClippingRegion(); } + + void GetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const + { 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 + { return m_pimpl->DeviceToLogicalY(y); } + wxCoord DeviceToLogicalXRel(wxCoord x) const + { return m_pimpl->DeviceToLogicalXRel(x); } + wxCoord DeviceToLogicalYRel(wxCoord y) const + { return m_pimpl->DeviceToLogicalYRel(y); } + wxCoord LogicalToDeviceX(wxCoord x) const + { return m_pimpl->LogicalToDeviceX(x); } + wxCoord LogicalToDeviceY(wxCoord y) const + { return m_pimpl->LogicalToDeviceY(y); } + wxCoord LogicalToDeviceXRel(wxCoord x) const + { return m_pimpl->LogicalToDeviceXRel(x); } + wxCoord LogicalToDeviceYRel(wxCoord y) const + { return m_pimpl->LogicalToDeviceYRel(y); } + + void SetMapMode(int mode) + { m_pimpl->SetMapMode(mode); } + int GetMapMode() const + { return m_pimpl->GetMapMode(); } + + void SetUserScale(double x, double y) + { m_pimpl->SetUserScale(x,y); } + void GetUserScale(double *x, double *y) const + { m_pimpl->GetUserScale( x, y ); } + + void SetLogicalScale(double x, double y) + { m_pimpl->SetLogicalScale( x, y ); } + void GetLogicalScale(double *x, double *y) + { m_pimpl->GetLogicalScale( x, y ); } + + void SetLogicalOrigin(wxCoord x, wxCoord y) + { m_pimpl->SetLogicalOrigin(x,y); } + void GetLogicalOrigin(wxCoord *x, wxCoord *y) const + { m_pimpl->DoGetLogicalOrigin(x, y); } + wxPoint GetLogicalOrigin() const + { wxCoord x, y; m_pimpl->DoGetLogicalOrigin(&x, &y); return wxPoint(x, y); } + + void SetDeviceOrigin(wxCoord x, wxCoord y) + { m_pimpl->SetDeviceOrigin( x, y); } + void GetDeviceOrigin(wxCoord *x, wxCoord *y) const + { m_pimpl->DoGetDeviceOrigin(x, y); } + wxPoint GetDeviceOrigin() const + { wxCoord x, y; m_pimpl->DoGetDeviceOrigin(&x, &y); return wxPoint(x, y); } + + void SetAxisOrientation(bool xLeftRight, bool yBottomUp) + { m_pimpl->SetAxisOrientation(xLeftRight, yBottomUp); } + + // mostly internal + void SetDeviceLocalOrigin( wxCoord x, wxCoord y ) + { m_pimpl->SetDeviceLocalOrigin( x, y ); } + + + // draw generic object + + void DrawObject(wxDrawObject* drawobject) + { + drawobject->Draw(*this); + CalcBoundingBox(drawobject->MinX(),drawobject->MinY()); + CalcBoundingBox(drawobject->MaxX(),drawobject->MaxY()); + } + + // ----------------------------------------------- + // the actual drawing API + + bool FloodFill(wxCoord x, wxCoord y, const wxColour& col, + int style = wxFLOOD_SURFACE) + { return m_pimpl->DoFloodFill(x, y, col, style); } + bool FloodFill(const wxPoint& pt, const wxColour& col, + int 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 + // initialColour in the centre of the cercle and fading to destColour. + void GradientFillConcentric(const wxRect& rect, + const wxColour& initialColour, + const wxColour& destColour) + { m_pimpl->DoGradientFillConcentric( rect, initialColour, destColour, + wxPoint(rect.GetWidth() / 2, + rect.GetHeight() / 2)); } + + void GradientFillConcentric(const wxRect& rect, + const wxColour& initialColour, + const wxColour& destColour, + const wxPoint& circleCenter) + { m_pimpl->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) + { m_pimpl->DoGradientFillLinear(rect, initialColour, destColour, nDirection); } + + bool GetPixel(wxCoord x, wxCoord y, wxColour *col) const + { return m_pimpl->DoGetPixel(x, y, col); } + bool GetPixel(const wxPoint& pt, wxColour *col) const + { return m_pimpl->DoGetPixel(pt.x, pt.y, col); } + + void DrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) + { m_pimpl->DoDrawLine(x1, y1, x2, y2); } + void DrawLine(const wxPoint& pt1, const wxPoint& pt2) + { m_pimpl->DoDrawLine(pt1.x, pt1.y, pt2.x, pt2.y); } + + void CrossHair(wxCoord x, wxCoord y) + { m_pimpl->DoCrossHair(x, y); } + void CrossHair(const wxPoint& pt) + { m_pimpl->DoCrossHair(pt.x, pt.y); } + + void DrawArc(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, + wxCoord xc, wxCoord yc) + { m_pimpl->DoDrawArc(x1, y1, x2, y2, xc, yc); } + void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre) + { m_pimpl->DoDrawArc(pt1.x, pt1.y, pt2.x, pt2.y, centre.x, centre.y); } + + void DrawCheckMark(wxCoord x, wxCoord y, + wxCoord width, wxCoord height) + { m_pimpl->DoDrawCheckMark(x, y, width, height); } + void DrawCheckMark(const wxRect& rect) + { m_pimpl->DoDrawCheckMark(rect.x, rect.y, rect.width, rect.height); } + + void DrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h, + double sa, double ea) + { m_pimpl->DoDrawEllipticArc(x, y, w, h, sa, ea); } + void DrawEllipticArc(const wxPoint& pt, const wxSize& sz, + double sa, double ea) + { m_pimpl->DoDrawEllipticArc(pt.x, pt.y, sz.x, sz.y, sa, ea); } + + void DrawPoint(wxCoord x, wxCoord y) + { m_pimpl->DoDrawPoint(x, y); } + void DrawPoint(const wxPoint& pt) + { m_pimpl->DoDrawPoint(pt.x, pt.y); } + + void DrawLines(int n, wxPoint points[], + wxCoord xoffset = 0, wxCoord yoffset = 0) + { m_pimpl->DoDrawLines(n, points, xoffset, yoffset); } + +#if 0 + // needs to be removed + void DrawLines(const wxPointList *list, + wxCoord xoffset = 0, wxCoord yoffset = 0) +#endif + + void DrawPolygon(int n, wxPoint points[], + wxCoord xoffset = 0, wxCoord yoffset = 0, + int fillStyle = wxODDEVEN_RULE) + { m_pimpl->DoDrawPolygon(n, points, xoffset, yoffset, fillStyle); } + +#if 0 + // needs to be removed + void DrawPolygon(const wxPointList *list, + wxCoord xoffset = 0, wxCoord yoffset = 0, + int fillStyle = wxODDEVEN_RULE) + { m_pimpl->DrawPolygon( list, xoffset, yoffset, fillStyle ); } +#endif + + void DrawPolyPolygon(int n, int count[], wxPoint points[], + wxCoord xoffset = 0, wxCoord yoffset = 0, + int fillStyle = wxODDEVEN_RULE) + { m_pimpl->DoDrawPolyPolygon(n, count, points, xoffset, yoffset, fillStyle); } + + void DrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) + { m_pimpl->DoDrawRectangle(x, y, width, height); } + void DrawRectangle(const wxPoint& pt, const wxSize& sz) + { m_pimpl->DoDrawRectangle(pt.x, pt.y, sz.x, sz.y); } + void DrawRectangle(const wxRect& rect) + { m_pimpl->DoDrawRectangle(rect.x, rect.y, rect.width, rect.height); } -#include "wx/cursor.h" // we have member variables of these classes -#include "wx/font.h" // so we can't do without them -#include "wx/colour.h" -#include "wx/brush.h" -#include "wx/pen.h" -#include "wx/palette.h" + void DrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, + double radius) + { m_pimpl->DoDrawRoundedRectangle(x, y, width, height, radius); } + void DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz, + double radius) + { m_pimpl->DoDrawRoundedRectangle(pt.x, pt.y, sz.x, sz.y, radius); } + void DrawRoundedRectangle(const wxRect& r, double radius) + { m_pimpl->DoDrawRoundedRectangle(r.x, r.y, r.width, r.height, radius); } -#include "wx/list.h" // we use wxList in inline functions + 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->DoDrawEllipse(pt.x - radius, pt.y - radius, 2*radius, 2*radius); } -class WXDLLEXPORT wxDCBase; + void DrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height) + { m_pimpl->DoDrawEllipse(x, y, width, height); } + void DrawEllipse(const wxPoint& pt, const wxSize& sz) + { m_pimpl->DoDrawEllipse(pt.x, pt.y, sz.x, sz.y); } + void DrawEllipse(const wxRect& rect) + { m_pimpl->DoDrawEllipse(rect.x, rect.y, rect.width, rect.height); } -class WXDLLEXPORT wxDrawObject -{ -public: + void DrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) + { m_pimpl->DoDrawIcon(icon, x, y); } + void DrawIcon(const wxIcon& icon, const wxPoint& pt) + { m_pimpl->DoDrawIcon(icon, pt.x, pt.y); } - wxDrawObject() - { - ResetBoundingBox(); - } + void DrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, + bool useMask = false) + { m_pimpl->DoDrawBitmap(bmp, x, y, useMask); } + void DrawBitmap(const wxBitmap &bmp, const wxPoint& pt, + bool useMask = false) + { m_pimpl->DoDrawBitmap(bmp, pt.x, pt.y, useMask); } - virtual ~wxDrawObject() { } + void DrawText(const wxString& text, wxCoord x, wxCoord y) + { m_pimpl->DoDrawText(text, x, y); } + void DrawText(const wxString& text, const wxPoint& pt) + { m_pimpl->DoDrawText(text, pt.x, pt.y); } - virtual void Draw(wxDCBase& dc) const { } + void DrawRotatedText(const wxString& text, wxCoord x, wxCoord y, double angle) + { m_pimpl->DoDrawRotatedText(text, x, y, angle); } + void DrawRotatedText(const wxString& text, const wxPoint& pt, double angle) + { m_pimpl->DoDrawRotatedText(text, pt.x, pt.y, angle); } + + // 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 + void DrawLabel(const wxString& text, + const wxBitmap& image, + const wxRect& rect, + int alignment = wxALIGN_LEFT | wxALIGN_TOP, + int indexAccel = -1, + wxRect *rectBounding = NULL); + + void DrawLabel(const wxString& text, const wxRect& rect, + int alignment = wxALIGN_LEFT | wxALIGN_TOP, + int indexAccel = -1) + { DrawLabel(text, wxNullBitmap, rect, alignment, indexAccel); } - virtual void CalcBoundingBox(wxCoord x, wxCoord y) + 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) { - 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->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) + { + return m_pimpl->DoBlit(destPt.x, destPt.y, sz.x, sz.y, + source, srcPt.x, srcPt.y, rop, useMask, srcPtMask.x, srcPtMask.y); } - void ResetBoundingBox() + 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) + { + return m_pimpl->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) { - m_isBBoxValid = FALSE; + 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); + } - m_minX = m_maxX = m_minY = m_maxY = 0; + wxBitmap GetAsBitmap(const wxRect *subrect = (const wxRect *) NULL) const + { + return m_pimpl->DoGetAsBitmap(subrect); } - // Get the final bounding box of the PostScript or Metafile picture. +#if wxUSE_SPLINES + void DrawSpline(wxCoord x1, wxCoord y1, + wxCoord x2, wxCoord y2, + wxCoord x3, wxCoord y3) + { m_pimpl->DoDrawSpline(x1,y1,x2,y2,x3,y3); } + void DrawSpline(int n, wxPoint points[]) + { m_pimpl->DoDrawSpline(n,points); } + void DrawSpline(const wxPointList *points) + { m_pimpl->DoDrawSpline(points); } +#endif // wxUSE_SPLINES - 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; +#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 + protected: - //for boundingbox calculation - bool m_isBBoxValid:1; - //for boundingbox calculation - wxCoord m_minX, m_minY, m_maxX, m_maxY; -}; + wxImplDC *m_pimpl; -// --------------------------------------------------------------------------- -// global variables -// --------------------------------------------------------------------------- +private: + DECLARE_ABSTRACT_CLASS(wxImplDC) +}; -WXDLLEXPORT_DATA(extern int) wxPageNumber; -// --------------------------------------------------------------------------- -// wxDC is the device context - object on which any drawing is done -// --------------------------------------------------------------------------- +//----------------------------------------------------------------------------- +// wxWindowDC +//----------------------------------------------------------------------------- -class WXDLLEXPORT wxDCBase : public wxObject +class WXDLLIMPEXP_CORE wxWindowDC : public wxDC { public: - wxDCBase() - { - m_clipping = FALSE; - m_ok = TRUE; + wxWindowDC(); + wxWindowDC( wxWindow *win ); - ResetBoundingBox(); +private: + DECLARE_DYNAMIC_CLASS(wxWindowDC) +}; - m_signX = m_signY = 1; +//----------------------------------------------------------------------------- +// wxClientDC +//----------------------------------------------------------------------------- - m_logicalOriginX = m_logicalOriginY = - m_deviceOriginX = m_deviceOriginY = 0; +class WXDLLIMPEXP_CORE wxClientDC : public wxDC +{ +public: + wxClientDC(); + wxClientDC( wxWindow *win ); - m_logicalScaleX = m_logicalScaleY = - m_userScaleX = m_userScaleY = - m_scaleX = m_scaleY = 1.0; +private: + DECLARE_DYNAMIC_CLASS(wxClientDC) +}; - m_logicalFunction = wxCOPY; +//----------------------------------------------------------------------------- +// wxPaintDC +//----------------------------------------------------------------------------- - m_backgroundMode = wxTRANSPARENT; +class WXDLLIMPEXP_CORE wxPaintDC : public wxDC +{ +public: + wxPaintDC(); + wxPaintDC( wxWindow *win ); - m_mappingMode = wxMM_TEXT; +private: + DECLARE_DYNAMIC_CLASS(wxPaintDC) +}; - m_backgroundBrush = *wxTRANSPARENT_BRUSH; +#else // wxUSE_NEW_DC - m_textForegroundColour = *wxBLACK; - m_textBackgroundColour = *wxWHITE; - m_colour = wxColourDisplay(); - } +class WXDLLIMPEXP_FWD_CORE wxDC; - ~wxDCBase() { } +// --------------------------------------------------------------------------- +// global variables +// --------------------------------------------------------------------------- - virtual void BeginDrawing() { } - virtual void EndDrawing() { } +// --------------------------------------------------------------------------- +// wxDC is the device context - object on which any drawing is done +// --------------------------------------------------------------------------- +class WXDLLEXPORT wxDCBase : public wxObject +{ +public: + wxDCBase(); + virtual ~wxDCBase(); + // graphic primitives // ------------------ @@ -148,12 +1071,36 @@ public: CalcBoundingBox(drawobject->MaxX(),drawobject->MaxY()); } - void FloodFill(wxCoord x, wxCoord y, const wxColour& col, + wxDC *GetOwner() const { return (wxDC*) this; } + + bool FloodFill(wxCoord x, wxCoord y, const wxColour& col, int style = wxFLOOD_SURFACE) - { DoFloodFill(x, y, col, style); } - void FloodFill(const wxPoint& pt, const wxColour& col, + { return DoFloodFill(x, y, col, style); } + bool FloodFill(const wxPoint& pt, const wxColour& col, int style = wxFLOOD_SURFACE) - { DoFloodFill(pt.x, pt.y, col, style); } + { 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); } bool GetPixel(wxCoord x, wxCoord y, wxColour *col) const { return DoGetPixel(x, y, col); } @@ -197,18 +1144,35 @@ public: void DrawLines(int n, wxPoint points[], wxCoord xoffset = 0, wxCoord yoffset = 0) { DoDrawLines(n, points, xoffset, yoffset); } - void DrawLines(const wxList *list, + void DrawLines(const wxPointList *list, wxCoord xoffset = 0, wxCoord yoffset = 0); +#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) { 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); +#if WXWIN_COMPATIBILITY_2_8 + wxDEPRECATED( void DrawPolygon(const wxList *list, + wxCoord xoffset = 0, wxCoord yoffset = 0, + int fillStyle = wxODDEVEN_RULE) ); +#endif // WXWIN_COMPATIBILITY_2_8 + + 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); } + void DrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) { DoDrawRectangle(x, y, width, height); } void DrawRectangle(const wxPoint& pt, const wxSize& sz) @@ -227,6 +1191,9 @@ public: 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); } + void DrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height) { DoDrawEllipse(x, y, width, height); } void DrawEllipse(const wxPoint& pt, const wxSize& sz) @@ -240,10 +1207,10 @@ public: { DoDrawIcon(icon, pt.x, pt.y); } void DrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, - bool useMask = FALSE) + bool useMask = false) { DoDrawBitmap(bmp, x, y, useMask); } void DrawBitmap(const wxBitmap &bmp, const wxPoint& pt, - bool useMask = FALSE) + bool useMask = false) { DoDrawBitmap(bmp, pt.x, pt.y, useMask); } void DrawText(const wxString& text, wxCoord x, wxCoord y) @@ -256,42 +1223,140 @@ public: void DrawRotatedText(const wxString& text, const wxPoint& pt, double angle) { DoDrawRotatedText(text, pt.x, pt.y, angle); } + // 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); + + void DrawLabel(const wxString& text, const wxRect& rect, + int alignment = wxALIGN_LEFT | wxALIGN_TOP, + int indexAccel = -1) + { 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) + int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord) { return DoBlit(xdest, ydest, width, height, - source, xsrc, ysrc, rop, useMask); + 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) + int rop = wxCOPY, bool useMask = false, const wxPoint& srcPtMask = wxDefaultPosition) { return DoBlit(destPt.x, destPt.y, sz.x, sz.y, - source, srcPt.x, srcPt.y, rop, useMask); + source, srcPt.x, srcPt.y, rop, useMask, srcPtMask.x, srcPtMask.y); + } + + 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) + { + 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); } + void DrawSpline(const wxPointList *points) { DoDrawSpline(points); } + +#if WXWIN_COMPATIBILITY_2_8 + wxDEPRECATED( void DrawSpline(const wxList *points) ); +#endif // WXWIN_COMPATIBILITY_2_8 + #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( 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 + // global DC operations // -------------------- virtual void Clear() = 0; - virtual bool StartDoc(const wxString& WXUNUSED(message)) { return TRUE; } + 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 // ------------------------------ @@ -300,7 +1365,9 @@ public: 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 // --------------- @@ -314,16 +1381,13 @@ public: void SetClippingRegion(const wxRegion& region) { DoSetClippingRegionAsRegion(region); } - virtual void DestroyClippingRegion() = 0; + 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 { - // Necessary to use intermediate variables for 16-bit compilation - wxCoord x, y, w, h; - DoGetClippingBox(&x, &y, &w, &h); - rect.x = x; rect.y = y; rect.width = w; rect.height = h; + DoGetClippingBox(&rect.x, &rect.y, &rect.width, &rect.height); } // text extent @@ -332,13 +1396,40 @@ public: 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, - wxFont *theFont = NULL) const + 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 // ------------------- @@ -364,20 +1455,6 @@ public: return wxSize(w, h); } - // coordinates conversions - // ----------------------- - - // This group of functions does actual conversion of the input, as you'd - // expect. - wxCoord DeviceToLogicalX(wxCoord x) const; - wxCoord DeviceToLogicalY(wxCoord y) const; - wxCoord DeviceToLogicalXRel(wxCoord x) const; - wxCoord DeviceToLogicalYRel(wxCoord y) const; - wxCoord LogicalToDeviceX(wxCoord x) const; - wxCoord LogicalToDeviceY(wxCoord y) const; - wxCoord LogicalToDeviceXRel(wxCoord x) const; - wxCoord LogicalToDeviceYRel(wxCoord y) const; - // query DC capabilities // --------------------- @@ -390,77 +1467,81 @@ public: // Resolution in Pixels per inch virtual wxSize GetPPI() const = 0; - virtual bool Ok() const { return m_ok; } + virtual bool Ok() const { return IsOk(); } + virtual bool IsOk() const { return m_ok; } - // accessors - // --------- - - // const... - int GetBackgroundMode() const { return m_backgroundMode; } - const wxBrush& GetBackground() const { return m_backgroundBrush; } - const wxBrush& GetBrush() const { return m_brush; } - const wxFont& GetFont() const { return m_font; } - const wxPen& GetPen() const { return m_pen; } - const wxColour& GetTextBackground() const { return m_textBackgroundColour; } - const wxColour& GetTextForeground() const { return m_textForegroundColour; } + // accessors and setters + // --------------------- - // ... and non const - wxBrush& GetBackground() { return m_backgroundBrush; } - wxBrush& GetBrush() { return m_brush; } - wxFont& GetFont() { return m_font; } - wxPen& GetPen() { return m_pen; } - wxColour& GetTextBackground() { return m_textBackgroundColour; } - wxColour& GetTextForeground() { return m_textForegroundColour; } + 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; } - int GetMapMode() const { return m_mappingMode; } - virtual void SetMapMode(int mode) = 0; + // 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 SetUserScale(double x, double y) = 0; + 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 SetLogicalScale(double x, double y) - { - m_logicalScaleX = x; - m_logicalScaleY = y; - } + 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 SetLogicalOrigin(wxCoord x, wxCoord y) = 0; + 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 SetDeviceOrigin(wxCoord x, wxCoord y) = 0; + + virtual void SetDeviceLocalOrigin( wxCoord x, wxCoord y ); - virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp) = 0; + virtual void ComputeScaleAndOrigin(); - int GetLogicalFunction() const { return m_logicalFunction; } - virtual void SetLogicalFunction(int function) = 0; + // 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); - // Sometimes we need to override optimization, e.g. if other software is - // drawing onto our surface and we can't be sure of who's done what. - // - // FIXME: is this (still) used? - virtual void SetOptimization(bool WXUNUSED(opt)) { } - virtual bool GetOptimization() { return FALSE; } + // logical functions + // --------------------------- + + virtual int GetLogicalFunction() const { return m_logicalFunction; } + virtual void SetLogicalFunction(int function) = 0; // bounding box // ------------ @@ -476,7 +1557,7 @@ public: } else { - m_isBBoxValid = TRUE; + m_isBBoxValid = true; m_minX = x; m_minY = y; @@ -487,7 +1568,7 @@ public: void ResetBoundingBox() { - m_isBBoxValid = FALSE; + m_isBBoxValid = false; m_minX = m_maxX = m_minY = m_maxY = 0; } @@ -501,72 +1582,43 @@ public: // misc old functions // ------------------ +#if WXWIN_COMPATIBILITY_2_8 // for compatibility with the old code when wxCoord was long everywhere -#ifndef __WIN16__ - void GetTextExtent(const wxString& string, + wxDEPRECATED( void GetTextExtent(const wxString& string, long *x, long *y, long *descent = NULL, long *externalLeading = NULL, - wxFont *theFont = NULL) const - { - wxCoord x2, y2, descent2, externalLeading2; - DoGetTextExtent(string, &x2, &y2, - &descent2, &externalLeading2, - theFont); - if ( x ) - *x = x2; - if ( y ) - *y = y2; - if ( descent ) - *descent = descent2; - if ( externalLeading ) - *externalLeading = externalLeading2; - } + 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 - void GetLogicalOrigin(long *x, long *y) const - { - wxCoord x2, y2; - DoGetLogicalOrigin(&x2, &y2); - if ( x ) - *x = x2; - if ( y ) - *y = y2; - } - - void GetDeviceOrigin(long *x, long *y) const - { - wxCoord x2, y2; - DoGetDeviceOrigin(&x2, &y2); - if ( x ) - *x = x2; - if ( y ) - *y = y2; - } - void GetClippingBox(long *x, long *y, long *w, long *h) const - { - wxCoord xx,yy,ww,hh; - DoGetClippingBox(&xx, &yy, &ww, &hh); - if (x) *x = xx; - if (y) *y = yy; - if (w) *w = ww; - if (h) *h = hh; - } -#endif // !Win16 + // RTL related functions + // --------------------- -#if WXWIN_COMPATIBILITY - virtual void SetColourMap(const wxPalette& palette) { SetPalette(palette); } - void GetTextExtent(const wxString& string, float *x, float *y, - float *descent = NULL, float *externalLeading = NULL, - wxFont *theFont = NULL, bool use16bit = FALSE) const ; - void GetSize(float* width, float* height) const { int w, h; GetSize(& w, & h); *width = w; *height = h; } - void GetSizeMM(float *width, float *height) const { long w, h; GetSizeMM(& w, & h); *width = (float) w; *height = (float) h; } -#endif // WXWIN_COMPATIBILITY + // 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 void DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, + 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; @@ -591,7 +1643,7 @@ protected: 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; + bool useMask = false) = 0; virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y) = 0; virtual void DoDrawRotatedText(const wxString& text, @@ -599,8 +1651,25 @@ protected: virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height, - wxDC *source, wxCoord xsrc, wxCoord ysrc, - int rop = wxCOPY, bool useMask = FALSE) = 0; + 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; @@ -610,29 +1679,25 @@ protected: 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; - // FIXME are these functions really different? - virtual void DoGetClippingRegion(wxCoord *x, wxCoord *y, - wxCoord *w, wxCoord *h) - { DoGetClippingBox(x, y, w, h); } virtual void DoGetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const { - if ( m_clipping ) - { - if ( x ) *x = m_clipX1; - if ( y ) *y = m_clipY1; - if ( w ) *w = m_clipX2 - m_clipX1; - if ( h ) *h = m_clipY2 - m_clipY1; - } - else - { - *x = *y = *w = *h = 0; - } + 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 @@ -651,13 +1716,23 @@ protected: wxCoord *x, wxCoord *y, wxCoord *descent = NULL, wxCoord *externalLeading = NULL, - wxFont *theFont = NULL) const = 0; + const wxFont *theFont = NULL) const = 0; + + virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const; #if wxUSE_SPLINES - virtual void DoDrawSpline(wxList *points) = 0; + virtual void DoDrawSpline(const wxPointList *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; @@ -670,15 +1745,25 @@ protected: // TODO short descriptions of what exactly they are would be nice... wxCoord m_logicalOriginX, m_logicalOriginY; - wxCoord m_deviceOriginX, m_deviceOriginY; - + 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; + 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; @@ -694,32 +1779,162 @@ protected: 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_NO_COPY_CLASS(wxDCBase) DECLARE_ABSTRACT_CLASS(wxDCBase) }; +#endif // wxUSE_NEW_DC + // ---------------------------------------------------------------------------- // now include the declaration of wxDC class // ---------------------------------------------------------------------------- -#if defined(__WXMSW__) +#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(__WXGTK__) +#elif defined(__WXGTK20__) #include "wx/gtk/dc.h" -#elif defined(__WXQT__) - #include "wx/qt/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" -#elif defined(__WXSTUBS__) - #include "wx/stubs/dc.h" #endif +#if wxUSE_GRAPHICS_CONTEXT + #include "wx/dcgraph.h" #endif - // _WX_DC_H_BASE_ + +// ---------------------------------------------------------------------------- +// 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); + } + + ~wxDCBrushChanger() + { + if ( m_brushOld.Ok() ) + m_dc.SetBrush(m_brushOld); + } + +private: + wxDC& m_dc; + + wxBrush m_brushOld; + + DECLARE_NO_COPY_CLASS(wxDCBrushChanger) +}; + +// ---------------------------------------------------------------------------- +// 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_