X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/793db75554d2d2bc5dc9b0fc42c0b7aa03a44183..1c8e5c51f8a0a547a5183b1443d3ba059b65ce69:/include/wx/msw/dc.h diff --git a/include/wx/msw/dc.h b/include/wx/msw/dc.h index 280fba8333..bd0fdb87af 100644 --- a/include/wx/msw/dc.h +++ b/include/wx/msw/dc.h @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: dc.h +// Name: wx/msw/dc.h // Purpose: wxDC class // Author: Julian Smart // Modified by: @@ -9,12 +9,8 @@ // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifndef _WX_DC_H_ -#define _WX_DC_H_ - -#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) - #pragma interface "dc.h" -#endif +#ifndef _WX_MSW_DC_H_ +#define _WX_MSW_DC_H_ #include "wx/defs.h" #include "wx/dc.h" @@ -35,7 +31,7 @@ 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; @@ -45,11 +41,13 @@ public: }; #endif -class WXDLLEXPORT wxDC : public wxDCBase +// 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 wxMSWDCImpl: public wxDCImpl { public: - wxDC(); - ~wxDC(); + wxMSWDCImpl(wxDC *owner, WXHDC hDC); + virtual ~wxMSWDCImpl(); // implement base class pure virtuals // ---------------------------------- @@ -75,25 +73,20 @@ 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 @@ -102,10 +95,9 @@ public: virtual void SetRop(WXHDC cdc); virtual void SelectOldObjects(WXHDC dc); - wxWindow *GetWindow() const { return m_canvas; } void SetWindow(wxWindow *win) { - m_canvas = win; + m_window = win; #if wxUSE_PALETTE // if we have palettes use the correct one for this window @@ -114,10 +106,17 @@ public: } WXHDC GetHDC() const { return m_hDC; } - void SetHDC(WXHDC dc, bool bOwnsDC = FALSE) + void SetHDC(WXHDC dc, bool bOwnsDC = false) { m_hDC = dc; m_bOwnsDC = bOwnsDC; + + // we might have a pre existing clipping region, make sure that we + // return it if asked -- but avoid calling ::GetClipBox() right now as + // it could be unnecessary wasteful + m_clipping = true; + m_clipX1 = + m_clipX2 = 0; } const wxBitmap& GetSelectedBitmap() const { return m_selectedBitmap; } @@ -135,10 +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_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 + wxMSWDCImpl( wxDC *owner ) : wxDCImpl( owner ) { Init(); } + + void RealizeScaleAndOrigin(); + +public: + 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); @@ -158,11 +199,15 @@ protected: double radius); virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height); +#if wxUSE_SPLINES + virtual void DoDrawSpline(const wxPointList *points); +#endif + virtual void DoCrossHair(wxCoord x, wxCoord y); virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y); virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, - bool useMask = FALSE); + bool useMask = false); virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y); virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y, @@ -170,20 +215,24 @@ protected: 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 = -1, wxCoord ysrcMask = -1); + 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); virtual void DoSetClippingRegion(wxCoord x, wxCoord y, wxCoord width, wxCoord height); - virtual void DoGetClippingRegion(wxCoord *x, wxCoord *y, - wxCoord *width, wxCoord *height) - { - GetClippingBox(x, y, width, height); - } + 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[], @@ -194,6 +243,11 @@ 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 @@ -201,18 +255,30 @@ protected: // (tell windows to translate pixel from other palettes to our custom one // and vice versa) // Realize tells it to also reset the system palette to this one. - void DoSelectPalette(bool realize = FALSE); + void DoSelectPalette(bool realize = false); // Find out what palette our parent window has, then select it into the dc void InitializePalette(); #endif // wxUSE_PALETTE +protected: // common part of DoDrawText() and DoDrawRotatedText() void DrawAnyText(const wxString& text, wxCoord x, wxCoord y); // 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 // ----------------------------- @@ -240,28 +306,63 @@ protected: #endif // wxUSE_PALETTE #if wxUSE_DC_CACHEING - static wxList sm_bitmapCache; - static wxList sm_dcCache; + static wxObjectList sm_bitmapCache; + static wxObjectList sm_dcCache; #endif - DECLARE_DYNAMIC_CLASS(wxDC) - DECLARE_NO_COPY_CLASS(wxDC) + DECLARE_CLASS(wxMSWDCImpl) + DECLARE_NO_COPY_CLASS(wxMSWDCImpl) }; // ---------------------------------------------------------------------------- -// wxDCTemp: a wxDC which doesn't free the given HDC (used by wxWindows +// wxDCTemp: a wxDC which doesn't free the given HDC (used by wxWidgets // only/mainly) // ---------------------------------------------------------------------------- -class WXDLLEXPORT wxDCTemp : public wxDC +class WXDLLEXPORT wxDCTempImpl : public wxMSWDCImpl { 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) + wxDCTempImpl(wxDC *owner, WXHDC hdc, const wxSize& size ) + : wxMSWDCImpl( owner, hdc ), + m_size(size) + { + } + + virtual ~wxDCTempImpl() + { + // prevent base class dtor from freeing it + SetHDC((WXHDC)NULL); + } + + 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: - DECLARE_NO_COPY_CLASS(wxDCTemp) + // 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(wxDCTempImpl) }; -#endif - // _WX_DC_H_ +class WXDLLEXPORT wxDCTemp : public wxDC +{ +public: + wxDCTemp(WXHDC hdc, const wxSize& size = wxDefaultSize) + : wxDC(new wxDCTempImpl(this, hdc, size)) + { + } +}; + +#endif // _WX_MSW_DC_H_ +