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Implement clipping in wxSVGFileDC.

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Support setting the clipping region and add update the documentation and the
sample accordingly.

Closes #14462.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72762 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2012-10-24 23:40:41 +00:00
parent c84c7347ba
commit 614e38dbb2
5 changed files with 179 additions and 18 deletions
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43
interface/wx/dcsvg.h
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@@ -67,21 +67,52 @@ public:
*/
void SetLogicalFunction(wxRasterOperationMode function);
/**
Sets the clipping region for this device context to the intersection of
the given region described by the parameters of this method and the previously
set clipping region.
Clipping is implemented in the SVG output using SVG group elements (<g>), with
nested group elements being used to represent clipping region intersections when
two or more calls are made to SetClippingRegion().
*/
void SetClippingRegion(wxCoord x, wxCoord y, wxCoord width,
wxCoord height);
/**
This is an overloaded member function, provided for convenience. It differs from the
above function only in what argument(s) it accepts.
*/
void SetClippingRegion(const wxPoint& pt, const wxSize& sz);
/**
This is an overloaded member function, provided for convenience. It differs from the
above function only in what argument(s) it accepts.
*/
void SetClippingRegion(const wxRect& rect);
/**
This function is not implemented in this DC class.
It could be implemented in future if a GetPoints() function were made available on wxRegion.
*/
void SetClippingRegion(const wxRegion& region);
/**
Destroys the current clipping region so that none of the DC is clipped.
Since intersections arising from sequential calls to SetClippingRegion are represented
with nested SVG group elements (<g>), all such groups are closed when
DestroyClippingRegion is called.
*/
void DestroyClippingRegion();
//@{
/**
Functions not implemented in this DC class.
*/
void CrossHair(wxCoord x, wxCoord y);
void DestroyClippingRegion();
bool FloodFill(wxCoord x, wxCoord y, const wxColour& colour,
wxFloodFillStyle style = wxFLOOD_SURFACE);
void GetClippingBox(wxCoord *x, wxCoord *y, wxCoord *width, wxCoord *height) const;
bool GetPixel(wxCoord x, wxCoord y, wxColour* colour) const;
void SetClippingRegion(wxCoord x, wxCoord y, wxCoord width,
wxCoord height);
void SetClippingRegion(const wxPoint& pt, const wxSize& sz);
void SetClippingRegion(const wxRect& rect);
void SetClippingRegion(const wxRegion& region);
void SetPalette(const wxPalette& palette);
bool StartDoc(const wxString& message);
//@}