X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/cd9da200285e3c625be91768c9ca61dc218c94d0..b1d66b5415f7befb45e050d7097571642b8bfa56:/include/wx/dc.h diff --git a/include/wx/dc.h b/include/wx/dc.h index 1c2ddf548f..ccf87a1784 100644 --- a/include/wx/dc.h +++ b/include/wx/dc.h @@ -31,6 +31,65 @@ #include "wx/list.h" // we use wxList in inline functions +class WXDLLEXPORT wxDCBase; + +class WXDLLEXPORT wxDrawObject +{ +public: + + wxDrawObject() + { + ResetBoundingBox(); + } + + virtual ~wxDrawObject() { } + + virtual void Draw(wxDCBase&) 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; +}; + // --------------------------------------------------------------------------- // global variables // --------------------------------------------------------------------------- @@ -49,7 +108,7 @@ public: m_clipping = FALSE; m_ok = TRUE; - m_minX = m_minY = m_maxX = m_maxY = 0; + ResetBoundingBox(); m_signX = m_signY = 1; @@ -60,7 +119,7 @@ public: m_userScaleX = m_userScaleY = m_scaleX = m_scaleY = 1.0; - m_logicalFunction = -1; + m_logicalFunction = wxCOPY; m_backgroundMode = wxTRANSPARENT; @@ -82,6 +141,13 @@ public: // graphic primitives // ------------------ + virtual void DrawObject(wxDrawObject* drawobject) + { + drawobject->Draw(*this); + CalcBoundingBox(drawobject->MinX(),drawobject->MinY()); + CalcBoundingBox(drawobject->MaxX(),drawobject->MaxY()); + } + void FloodFill(wxCoord x, wxCoord y, const wxColour& col, int style = wxFLOOD_SURFACE) { DoFloodFill(x, y, col, style); } @@ -190,19 +256,35 @@ 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 = -1, wxCoord ysrcMask = -1) { 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 = wxPoint(-1, -1)) { 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); } #if wxUSE_SPLINES @@ -234,7 +316,9 @@ 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 // --------------- @@ -266,6 +350,7 @@ 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, @@ -273,6 +358,13 @@ public: wxFont *theFont = NULL) const { DoGetTextExtent(string, x, y, descent, externalLeading, theFont); } + // works for single as well as multi-line strings + virtual void GetMultiLineTextExtent(const wxString& text, + wxCoord *width, + wxCoord *height, + wxCoord *heightLine = NULL, + wxFont *font = NULL); + // size and resolution // ------------------- @@ -330,6 +422,7 @@ public: // --------- // 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; } @@ -395,15 +488,44 @@ public: virtual void SetOptimization(bool WXUNUSED(opt)) { } virtual bool GetOptimization() { return FALSE; } + // Some platforms have a DC cache, which should be cleared + // at appropriate points such as after a series of DC operations. + // Put ClearCache in the wxDC implementation class, since it has to be + // static. + // static void ClearCache() ; +#if 0 // wxUSE_DC_CACHEING + static void EnableCache(bool cacheing) { sm_cacheing = cacheing; } + static bool CacheEnabled() { return sm_cacheing ; } +#endif + // bounding box // ------------ virtual void CalcBoundingBox(wxCoord x, wxCoord y) { - 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; + 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. @@ -468,12 +590,17 @@ public: #endif // !Win16 #if WXWIN_COMPATIBILITY + +#if wxUSE_PALETTE virtual void SetColourMap(const wxPalette& palette) { SetPalette(palette); } +#endif // wxUSE_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 protected: @@ -514,7 +641,7 @@ 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; + int rop = wxCOPY, bool useMask = FALSE, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1) = 0; virtual void DoGetSize(int *width, int *height) const = 0; virtual void DoGetSizeMM(int* width, int* height) const = 0; @@ -568,7 +695,7 @@ protected: wxFont *theFont = NULL) const = 0; #if wxUSE_SPLINES - virtual void DoDrawSpline(wxList *points) = 0; + virtual void DoDrawSpline(wxList *points); #endif protected: @@ -577,6 +704,10 @@ protected: bool m_ok:1; bool m_clipping:1; bool m_isInteractive:1; + bool m_isBBoxValid:1; +#if wxUSE_DC_CACHEING +// static bool sm_cacheing; +#endif // coordinate system variables @@ -607,10 +738,13 @@ protected: wxColour m_textForegroundColour; wxColour m_textBackgroundColour; wxFont m_font; + +#if wxUSE_PALETTE wxPalette m_palette; +#endif // wxUSE_PALETTE private: - DECLARE_NO_COPY_CLASS(wxDCBase); + DECLARE_NO_COPY_CLASS(wxDCBase) DECLARE_ABSTRACT_CLASS(wxDCBase) }; @@ -624,8 +758,8 @@ private: #include "wx/motif/dc.h" #elif defined(__WXGTK__) #include "wx/gtk/dc.h" -#elif defined(__WXQT__) - #include "wx/qt/dc.h" +#elif defined(__WXMGL__) + #include "wx/mgl/dc.h" #elif defined(__WXMAC__) #include "wx/mac/dc.h" #elif defined(__WXPM__) @@ -634,5 +768,53 @@ private: #include "wx/stubs/dc.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) { } + + ~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; +}; + +// ---------------------------------------------------------------------------- +// 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 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; +}; + #endif // _WX_DC_H_BASE_