X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/e71508e160653f122f8e5d7f73c2ebf7f928964b..f6669958924c3c3833e2932b65598b06073d2e65:/include/wx/dc.h

diff --git a/include/wx/dc.h b/include/wx/dc.h
index 5734cde438..34f58e2662 100644
--- a/include/wx/dc.h
+++ b/include/wx/dc.h
@@ -43,6 +43,10 @@ class WXDLLIMPEXP_FWD_CORE wxMemoryDC;
 class WXDLLIMPEXP_FWD_CORE wxPrinterDC;
 class WXDLLIMPEXP_FWD_CORE wxPrintData;
 
+#if wxUSE_GRAPHICS_CONTEXT
+class WXDLLIMPEXP_FWD_CORE wxGraphicsContext;
+#endif
+
 //  Logical ops
 enum wxRasterOperationMode
 {
@@ -279,6 +283,8 @@ public:
         return NULL;
     }
 
+    virtual void* GetHandle() const { return NULL; }
+    
     // query dimension, colour deps, resolution
 
     virtual void DoGetSize(int *width, int *height) const = 0;
@@ -427,8 +433,12 @@ public:
 
     // clipping
 
+    // Note that this pure virtual method has an implementation that updates
+    // the values returned by DoGetClippingBox() and so can be called from the
+    // derived class overridden version if it makes sense (i.e. if the clipping
+    // box coordinates are not already updated in some other way).
     virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
-                                     wxCoord width, wxCoord height) = 0;
+                                     wxCoord w, wxCoord h) = 0;
 
     // NB: this function works with device coordinates, not the logical ones!
     virtual void DoSetDeviceClippingRegion(const wxRegion& region) = 0;
@@ -471,7 +481,7 @@ public:
     }
 
     virtual void SetLogicalScale(double x, double y);
-    virtual void GetLogicalScale(double *x, double *y)
+    virtual void GetLogicalScale(double *x, double *y) const
     {
         if ( x ) *x = m_logicalScaleX;
         if ( y ) *y = m_logicalScaleY;
@@ -512,6 +522,19 @@ public:
     // this needs to overidden if the axis is inverted
     virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
 
+#ifdef __WXMSW__
+    // Native Windows functions using the underlying HDC don't honour GDI+
+    // transformations which may be applied to it. Using this function we can
+    // transform the coordinates manually before passing them to such functions
+    // (as in e.g. wxRendererMSW code). It doesn't do anything if this is not a
+    // wxGCDC.
+    virtual wxRect MSWApplyGDIPlusTransform(const wxRect& r) const
+    {
+        return r;
+    }
+#endif // __WXMSW__
+
+
     // ---------------------------------------------------------
     // the actual drawing API
 
@@ -627,6 +650,13 @@ public:
     virtual int GetResolution() const
         { return -1; }
 
+#if wxUSE_GRAPHICS_CONTEXT
+    virtual wxGraphicsContext* GetGraphicsContext() const
+        { return NULL; }
+    virtual void SetGraphicsContext( wxGraphicsContext* WXUNUSED(ctx) )
+        {}
+#endif
+
 private:
     wxDC       *m_owner;
 
@@ -763,6 +793,9 @@ public:
     wxWindow *GetWindow() const
         { return m_pimpl->GetWindow(); }
 
+    void *GetHandle() const
+        { return m_pimpl->GetHandle(); }
+
     bool IsOk() const
         { return m_pimpl && m_pimpl->IsOk(); }
 
@@ -996,7 +1029,7 @@ public:
 
     void SetLogicalScale(double x, double y)
         { m_pimpl->SetLogicalScale( x, y ); }
-    void GetLogicalScale(double *x, double *y)
+    void GetLogicalScale(double *x, double *y) const
         { m_pimpl->GetLogicalScale( x, y ); }
 
     void SetLogicalOrigin(wxCoord x, wxCoord y)
@@ -1316,6 +1349,17 @@ public:
     TempHDC GetTempHDC() { return TempHDC(*this); }
 #endif // __WXMSW__
 
+#if wxUSE_GRAPHICS_CONTEXT
+    virtual wxGraphicsContext* GetGraphicsContext() const
+    {
+        return m_pimpl->GetGraphicsContext();
+    }
+    virtual void SetGraphicsContext( wxGraphicsContext* ctx )
+    {
+        m_pimpl->SetGraphicsContext(ctx);
+    }
+#endif
+
 protected:
     // ctor takes ownership of the pointer
     wxDC(wxDCImpl *pimpl) : m_pimpl(pimpl) { }
@@ -1344,13 +1388,13 @@ public:
 
     ~wxDCTextColourChanger()
     {
-        if ( m_colFgOld.Ok() )
+        if ( m_colFgOld.IsOk() )
             m_dc.SetTextForeground(m_colFgOld);
     }
 
     void Set(const wxColour& col)
     {
-        if ( !m_colFgOld.Ok() )
+        if ( !m_colFgOld.IsOk() )
             m_colFgOld = m_dc.GetTextForeground();
         m_dc.SetTextForeground(col);
     }
@@ -1378,7 +1422,7 @@ public:
 
     ~wxDCPenChanger()
     {
-        if ( m_penOld.Ok() )
+        if ( m_penOld.IsOk() )
             m_dc.SetPen(m_penOld);
     }
 
@@ -1405,7 +1449,7 @@ public:
 
     ~wxDCBrushChanger()
     {
-        if ( m_brushOld.Ok() )
+        if ( m_brushOld.IsOk() )
             m_dc.SetBrush(m_brushOld);
     }
 
@@ -1461,14 +1505,14 @@ public:
 
     void Set(const wxFont& font)
     {
-        if ( !m_fontOld.Ok() )
+        if ( !m_fontOld.IsOk() )
             m_fontOld = m_dc.GetFont();
         m_dc.SetFont(font);
     }
 
     ~wxDCFontChanger()
     {
-        if ( m_fontOld.Ok() )
+        if ( m_fontOld.IsOk() )
             m_dc.SetFont(m_fontOld);
     }