X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8907154c1a8a6882c6797d1f16393ddfb23e7f3a..ed903e42421d76ac96e0e48724c66afc611a740a:/include/wx/msw/dc.h diff --git a/include/wx/msw/dc.h b/include/wx/msw/dc.h index 1447eb0cbe..7f2abb4bf6 100644 --- a/include/wx/msw/dc.h +++ b/include/wx/msw/dc.h @@ -9,8 +9,8 @@ // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifndef _WX_DC_H_ -#define _WX_DC_H_ +#ifndef _WX_MSW_DC_H_ +#define _WX_MSW_DC_H_ #include "wx/defs.h" @@ -30,7 +30,7 @@ class wxDCCacheEntry: public wxObject public: wxDCCacheEntry(WXHBITMAP hBitmap, int w, int h, int depth); wxDCCacheEntry(WXHDC hDC, int depth); - ~wxDCCacheEntry(); + virtual ~wxDCCacheEntry(); WXHBITMAP m_bitmap; WXHDC m_dc; @@ -40,11 +40,13 @@ public: }; #endif +// this is an ABC: use one of the derived classes to create a DC associated +// with a window, screen, printer and so on class WXDLLEXPORT wxDC : public wxDCBase { public: - wxDC(); - ~wxDC(); + wxDC(WXHDC hDC) { Init(); m_hDC = hDC; } + virtual ~wxDC(); // implement base class pure virtuals // ---------------------------------- @@ -70,25 +72,20 @@ public: virtual wxCoord GetCharHeight() const; virtual wxCoord GetCharWidth() const; - virtual void DoGetTextExtent(const wxString& string, - wxCoord *x, wxCoord *y, - wxCoord *descent = NULL, - wxCoord *externalLeading = NULL, - wxFont *theFont = NULL) const; - virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const; virtual bool CanDrawBitmap() const; virtual bool CanGetTextExtent() const; virtual int GetDepth() const; virtual wxSize GetPPI() const; + virtual void SetMapMode(int mode); virtual void SetUserScale(double x, double y); - virtual void SetSystemScale(double x, double y); virtual void SetLogicalScale(double x, double y); virtual void SetLogicalOrigin(wxCoord x, wxCoord y); virtual void SetDeviceOrigin(wxCoord x, wxCoord y); virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp); + virtual void SetLogicalFunction(int function); // implementation from now on @@ -137,10 +134,52 @@ public: static void ClearCache(); #endif + // 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; + virtual void SetLayoutDirection(wxLayoutDirection dir); + protected: + void Init() + { + m_canvas = NULL; + m_bOwnsDC = false; + m_hDC = NULL; + + m_oldBitmap = NULL; + m_oldPen = NULL; + m_oldBrush = NULL; + m_oldFont = NULL; + +#if wxUSE_PALETTE + m_oldPalette = NULL; +#endif // wxUSE_PALETTE + } + + // create an uninitialized DC: this should be only used by the derived + // classes + wxDC() { Init(); } + + void RealizeScaleAndOrigin(); + + virtual void DoGetTextExtent(const wxString& string, + wxCoord *x, wxCoord *y, + wxCoord *descent = NULL, + wxCoord *externalLeading = NULL, + const wxFont *theFont = NULL) const; + virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const; + virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col, int style = wxFLOOD_SURFACE); + virtual void DoGradientFillLinear(const wxRect& rect, + const wxColour& initialColour, + const wxColour& destColour, + wxDirection nDirection = wxEAST); + virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const; virtual void DoDrawPoint(wxCoord x, wxCoord y); @@ -178,6 +217,14 @@ protected: wxDC *source, wxCoord xsrc, wxCoord ysrc, int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord); + 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); + // this is gnarly - we can't even call this function DoSetClippingRegion() // because of virtual function hiding virtual void DoSetClippingRegionAsRegion(const wxRegion& region); @@ -186,7 +233,6 @@ protected: virtual void DoGetClippingBox(wxCoord *x, wxCoord *y, wxCoord *w, wxCoord *h) const; - virtual void DoGetSize(int *width, int *height) const; virtual void DoGetSizeMM(int* width, int* height) const; virtual void DoDrawLines(int n, wxPoint points[], @@ -197,6 +243,8 @@ protected: virtual void DoDrawPolyPolygon(int n, int count[], wxPoint points[], wxCoord xoffset, wxCoord yoffset, int fillStyle = wxODDEVEN_RULE); + virtual wxBitmap DoGetAsBitmap(const wxRect *subrect) const + { return subrect == NULL ? GetSelectedBitmap() : GetSelectedBitmap().GetSubBitmap(*subrect); } #if wxUSE_PALETTE @@ -216,6 +264,17 @@ protected: // common part of DoSetClippingRegion() and DoSetClippingRegionAsRegion() void SetClippingHrgn(WXHRGN hrgn); + // implementation of DoGetSize() for wxScreen/PrinterDC: this simply + // returns the size of the entire device this DC is associated with + // + // notice that we intentionally put it in a separate function instead of + // DoGetSize() itself because we want it to remain pure virtual both + // because each derived class should take care to define it as needed (this + // implementation is not at all always appropriate) and because we want + // wxDC to be an ABC to prevent it from being created directly + void GetDeviceSize(int *width, int *height) const; + + // MSW-specific member variables // ----------------------------- @@ -259,12 +318,39 @@ protected: class WXDLLEXPORT wxDCTemp : public wxDC { public: - wxDCTemp(WXHDC hdc) { SetHDC(hdc); } - virtual ~wxDCTemp() { SetHDC((WXHDC)NULL); } + // construct a temporary DC with the specified HDC and size (it should be + // specified whenever we know it for this HDC) + wxDCTemp(WXHDC hdc, const wxSize& size = wxDefaultSize) + : wxDC(hdc), + m_size(size) + { + } + + virtual ~wxDCTemp() + { + // prevent base class dtor from freeing it + SetHDC((WXHDC)NULL); + } + +protected: + virtual void DoGetSize(int *w, int *h) const + { + wxASSERT_MSG( m_size.IsFullySpecified(), + _T("size of this DC hadn't been set and is unknown") ); + + if ( w ) + *w = m_size.x; + if ( h ) + *h = m_size.y; + } private: + // size of this DC must be explicitly set by SetSize() as we have no way to + // find it ourselves + const wxSize m_size; + DECLARE_NO_COPY_CLASS(wxDCTemp) }; -#endif - // _WX_DC_H_ +#endif // _WX_MSW_DC_H_ +