/////////////////////////////////////////////////////////////////////////////
// Name: wx/dc.h
// Purpose: wxDC class
-// Author: Vadim Zeitlin
+// Author: Vadim Zeitlin
// Modified by:
// Created: 05/25/99
// RCS-ID: $Id$
wxDCFactory() {}
virtual ~wxDCFactory() {}
- virtual wxDCImpl* CreateWindowDC( wxWindowDC *owner ) = 0;
virtual wxDCImpl* CreateWindowDC( wxWindowDC *owner, wxWindow *window ) = 0;
- virtual wxDCImpl* CreateClientDC( wxClientDC *owner ) = 0;
virtual wxDCImpl* CreateClientDC( wxClientDC *owner, wxWindow *window ) = 0;
- virtual wxDCImpl* CreatePaintDC( wxPaintDC *owner ) = 0;
virtual wxDCImpl* CreatePaintDC( wxPaintDC *owner, wxWindow *window ) = 0;
virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner ) = 0;
virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxBitmap &bitmap ) = 0;
public:
wxNativeDCFactory() {}
- virtual wxDCImpl* CreateWindowDC( wxWindowDC *owner );
virtual wxDCImpl* CreateWindowDC( wxWindowDC *owner, wxWindow *window );
- virtual wxDCImpl* CreateClientDC( wxClientDC *owner );
virtual wxDCImpl* CreateClientDC( wxClientDC *owner, wxWindow *window );
- virtual wxDCImpl* CreatePaintDC( wxPaintDC *owner );
virtual wxDCImpl* CreatePaintDC( wxPaintDC *owner, wxWindow *window );
virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner );
virtual wxDCImpl* CreateMemoryDC( wxMemoryDC *owner, wxBitmap &bitmap );
{
public:
wxDCImpl( wxDC *owner );
- ~wxDCImpl();
+ virtual ~wxDCImpl();
wxDC *GetOwner() const { return m_owner; }
virtual bool CanDrawBitmap() const = 0;
virtual bool CanGetTextExtent() const = 0;
+ // get Cairo context
+ virtual void* GetCairoContext() const
+ {
+ return NULL;
+ }
+
// query dimension, colour deps, resolution
virtual void DoGetSize(int *width, int *height) const = 0;
// setters and getters
virtual void SetFont(const wxFont& font) = 0;
- virtual const wxFont& GetFont() const { return m_font; }
+ virtual const wxFont& GetFont() const { return m_font; }
virtual void SetPen(const wxPen& pen) = 0;
- virtual const wxPen& GetPen() const { return m_pen; }
+ virtual const wxPen& GetPen() const { return m_pen; }
virtual void SetBrush(const wxBrush& brush) = 0;
- virtual const wxBrush& GetBrush() const { return m_brush; }
+ virtual const wxBrush& GetBrush() const { return m_brush; }
virtual void SetBackground(const wxBrush& brush) = 0;
- virtual const wxBrush& GetBackground() const { return m_backgroundBrush; }
+ 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 const wxColour& GetTextForeground() const
+ { return m_textForegroundColour; }
virtual void SetTextBackground(const wxColour& colour)
{ m_textBackgroundColour = colour; }
- virtual const wxColour& GetTextBackground() const { return m_textBackgroundColour; }
+ virtual const wxColour& GetTextBackground() const
+ { return m_textBackgroundColour; }
#if wxUSE_PALETTE
virtual void SetPalette(const wxPalette& palette) = 0;
#endif // wxUSE_PALETTE
+ // inherit the DC attributes (font and colours) from the given window
+ //
+ // this is called automatically when a window, client or paint DC is
+ // created
+ virtual void InheritAttributes(wxWindow *win);
+
+
// logical functions
virtual void SetLogicalFunction(int function) = 0;
virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
wxCoord width, wxCoord height) = 0;
- virtual void DoSetClippingRegionAsRegion(const wxRegion& region) = 0;
+
+ // NB: this function works with device coordinates, not the logical ones!
+ virtual void DoSetDeviceClippingRegion(const wxRegion& region) = 0;
virtual void DoGetClippingBox(wxCoord *x, wxCoord *y,
wxCoord *w, wxCoord *h) const
#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[]);
+ void DrawSpline(wxCoord x1, wxCoord y1,
+ wxCoord x2, wxCoord y2,
+ wxCoord x3, wxCoord y3);
+ void DrawSpline(int n, wxPoint points[]);
+ void DrawSpline(const wxPointList *points) { DoDrawSpline(points); }
+
virtual void DoDrawSpline(const wxPointList *points);
#endif
// ---------------------------------------------------------
// wxPrinterDC Impl API
- virtual wxRect GetPaperRect()
+ virtual wxRect GetPaperRect() const
{ int w = 0; int h = 0; DoGetSize( &w, &h ); return wxRect(0,0,w,h); }
- virtual int GetResolution()
+ virtual int GetResolution() const
{ return -1; }
private:
double sa, double ea );
#endif // __WXWINCE__
+ // returns adjustment factor for converting wxFont "point size"; in wx
+ // it is point size on screen and needs to be multiplied by this value
+ // for rendering on higher-resolution DCs such as printer ones
+ static float GetFontPointSizeAdjustment(float dpi);
// window on which the DC draws or NULL
wxWindow *m_window;
wxSize GetPPI() const
{ return m_pimpl->GetPPI(); }
- virtual int GetResolution()
+ virtual int GetResolution() const
{ return m_pimpl->GetResolution(); }
// Right-To-Left (RTL) modes
{ 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); }
+
+ // unlike the functions above, the coordinates of the region used in this
+ // one are in device coordinates, not the logical ones
+ void SetDeviceClippingRegion(const wxRegion& region)
+ { m_pimpl->DoSetDeviceClippingRegion(region); }
+
+ // this function is deprecated because its name is confusing: you may
+ // expect it to work with logical coordinates but, in fact, it does exactly
+ // the same thing as SetDeviceClippingRegion()
+ //
+ // please review the code using it and either replace it with calls to
+ // SetDeviceClippingRegion() or correct it if it was [wrongly] passing
+ // logical coordinates to this function
+ wxDEPRECATED_INLINE(void SetClippingRegion(const wxRegion& region),
+ SetDeviceClippingRegion(region); )
void DestroyClippingRegion()
{ m_pimpl->DestroyClippingRegion(); }
void DrawSpline(wxCoord x1, wxCoord y1,
wxCoord x2, wxCoord y2,
wxCoord x3, wxCoord y3)
- { m_pimpl->DoDrawSpline(x1,y1,x2,y2,x3,y3); }
+ { m_pimpl->DrawSpline(x1,y1,x2,y2,x3,y3); }
void DrawSpline(int n, wxPoint points[])
- { m_pimpl->DoDrawSpline(n,points); }
+ { m_pimpl->DrawSpline(n,points); }
void DrawSpline(const wxPointList *points)
- { m_pimpl->DoDrawSpline(points); }
+ { m_pimpl->DrawSpline(points); }
#endif // wxUSE_SPLINES
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
+#ifdef __WXMSW__
+ WXHDC GetHDC() const;
+#endif // __WXMSW__
protected:
// ctor takes ownership of the pointer
{
public:
wxDCClipper(wxDC& dc, const wxRegion& r) : m_dc(dc)
- { dc.SetClippingRegion(r); }
+ { dc.SetClippingRegion(r.GetBox()); }
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)
DECLARE_NO_COPY_CLASS(wxDCClipper)
};
+// ----------------------------------------------------------------------------
+// helper class: you can use it to temporarily change the DC font and
+// restore it automatically when the object goes out of scope
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_CORE wxDCFontChanger
+{
+public:
+ wxDCFontChanger(wxDC& dc, const wxFont& font) : m_dc(dc), m_fontOld(dc.GetFont())
+ {
+ m_dc.SetFont(font);
+ }
+
+ ~wxDCFontChanger()
+ {
+ if ( m_fontOld.Ok() )
+ m_dc.SetFont(m_fontOld);
+ }
+
+private:
+ wxDC& m_dc;
+
+ wxFont m_fontOld;
+
+ DECLARE_NO_COPY_CLASS(wxDCFontChanger)
+};
+
+
#endif // _WX_DC_H_BASE_
projects / wxWidgets.git / blobdiff