X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8fb3a512a85572ebf4b4f46eaf536727dfe4e01e..085a1f3cd9bb0dd151024aeb2d09e769e76bb829:/include/wx/dc.h diff --git a/include/wx/dc.h b/include/wx/dc.h index 2388b401f8..b856ef7f83 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 // --------------------------------------------------------------------------- @@ -43,15 +102,13 @@ WXDLLEXPORT_DATA(extern int) wxPageNumber; class WXDLLEXPORT wxDCBase : public wxObject { - DECLARE_ABSTRACT_CLASS(wxDCBase) - public: wxDCBase() { m_clipping = FALSE; m_ok = TRUE; - m_minX = m_minY = m_maxX = m_maxY = 0; + ResetBoundingBox(); m_signX = m_signY = 1; @@ -62,7 +119,7 @@ public: m_userScaleX = m_userScaleY = m_scaleX = m_scaleY = 1.0; - m_logicalFunction = -1; + m_logicalFunction = wxCOPY; m_backgroundMode = wxTRANSPARENT; @@ -84,6 +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); } @@ -112,6 +176,12 @@ public: void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre) { DoDrawArc(pt1.x, pt1.y, pt2.x, pt2.y, centre.x, centre.y); } + 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); } + void DrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h, double sa, double ea) { DoDrawEllipticArc(x, y, w, h, sa, ea); } @@ -181,6 +251,27 @@ public: void DrawText(const wxString& text, const wxPoint& pt) { DoDrawText(text, pt.x, pt.y); } + 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); } + + // 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) @@ -256,7 +347,8 @@ 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, @@ -264,6 +356,13 @@ 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 // ------------------- @@ -321,6 +420,7 @@ 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; } @@ -391,10 +491,29 @@ public: 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. @@ -448,13 +567,13 @@ public: *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; + { + 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 @@ -480,6 +599,8 @@ protected: 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; @@ -497,6 +618,8 @@ protected: 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, @@ -555,7 +678,7 @@ protected: wxFont *theFont = NULL) const = 0; #if wxUSE_SPLINES - virtual void DoDrawSpline(wxList *points) = 0; + virtual void DoDrawSpline(wxList *points); #endif protected: @@ -564,6 +687,7 @@ protected: bool m_ok:1; bool m_clipping:1; bool m_isInteractive:1; + bool m_isBBoxValid:1; // coordinate system variables @@ -597,7 +721,8 @@ protected: wxPalette m_palette; private: - DECLARE_NO_COPY_CLASS(wxDCBase); + DECLARE_NO_COPY_CLASS(wxDCBase) + DECLARE_ABSTRACT_CLASS(wxDCBase) }; // ---------------------------------------------------------------------------- @@ -610,6 +735,8 @@ private: #include "wx/motif/dc.h" #elif defined(__WXGTK__) #include "wx/gtk/dc.h" +#elif defined(__WXMGL__) + #include "wx/mgl/dc.h" #elif defined(__WXQT__) #include "wx/qt/dc.h" #elif defined(__WXMAC__) @@ -620,5 +747,53 @@ 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_