Use wxFileName in wxSVGBitmapFileHandler constructor

include/wx/dcsvg.h

@@ -12,6 +12,7 @@
 #define _WX_DCSVG_H_
 
 #include "wx/string.h"
+#include "wx/filename.h"
 #include "wx/dc.h"
 
 #if wxUSE_SVG
@@ -49,7 +50,7 @@ public:
     {
     }
 
-    explicit wxSVGBitmapFileHandler(const wxString& path)
+    explicit wxSVGBitmapFileHandler(const wxFileName& path)
         : m_path(path)
     {
     }
@@ -59,7 +60,7 @@ public:
                                wxOutputStream& stream) const wxOVERRIDE;
 
 private:
-    wxString m_path; // When set, will be appended with _image#.png
+    wxFileName m_path; // When set, name will be appended with _image#.png
 };
 
 // Predefined handler which embeds the bitmap (base64-encoding it) inside the

interface/wx/dcsvg.h

@@ -180,7 +180,7 @@ public:
     When using wxSVGFileDC::SetBitmapHandler() to set this handler with the
     default constructor, the PNG files are created in the runtime location of
     the application. The save location can be customized by using the
-    wxSVGBitmapFileHandler(const wxString&) constructor.
+    wxSVGBitmapFileHandler(const wxFileName&) constructor.
 
     @see wxSVGFileDC::SetBitmapHandler().
 
@@ -196,13 +196,12 @@ public:
         Create a wxSVGBitmapFileHandler and specify the location where the file
         will be saved.
 
-        @param path The path (with separator) of the save location. If
-        @a path contains a filename, the autogenerated filename will be
-        appended to this name.
+        @param path The path of the save location. If @a path contains a
+        filename, the autogenerated filename will be appended to this name.
 
         @since 3.1.3
     */
-    wxSVGBitmapFileHandler(const wxString& path);
+    wxSVGBitmapFileHandler(const wxFileName& path);
 
     virtual bool ProcessBitmap(const wxBitmap& bitmap,
                                wxCoord x, wxCoord y,

src/common/dcsvg.cpp

@@ -335,7 +335,7 @@ wxSVGBitmapFileHandler::ProcessBitmap(const wxBitmap& bmp,
         wxImage::AddHandler(new wxPNGHandler);
 
     // find a suitable file name
-    wxFileName sPNG = wxFileName(m_path);
+    wxFileName sPNG = m_path;
     do
     {
         sPNG.SetFullName(wxString::Format("%s%simage%d.png",