Moved all interface headers into a 'wx' subdirectory for proper use of Doxygen path settings.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@54385 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

interface/wx/wrapsizer.h

@@ -0,0 +1,63 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wrapsizer.h
+// Purpose:     interface of wxWrapSizer
+// Author:      wxWidgets team
+// RCS-ID:      $Id$
+// Licence:     wxWindows license
+/////////////////////////////////////////////////////////////////////////////
+
+/**
+    @class wxWrapSizer
+    @wxheader{wrapsizer.h}
+
+    A wrap sizer lays out its items in a single line, like a box sizer -- as long
+    as there is space available in that direction. Once all available space in
+    the primary direction has been used, a new line is added and items are added
+    there.
+
+    So a wrap sizer has a primary orientation for adding items, and adds lines
+    as needed in the secondary direction.
+
+    @library{wxcore}
+    @category{winlayout}
+
+    @see wxBoxSizer, wxSizer, @ref overview_sizeroverview "Sizer overview"
+*/
+class wxWrapSizer : public wxBoxSizer
+{
+public:
+    /**
+        Constructor for a wxWrapSizer. @a orient determines the primary direction of
+        the sizer (the most common case being @c wxHORIZONTAL). The flags
+        parameter can be a combination of the values @c
+        wxEXTEND_LAST_ON_EACH_LINE which will cause the last item on each line
+        to use any remaining space on that line and @c wxREMOVE_LEADING_SPACES
+        which removes any spacer elements from the beginning of a row. Both of
+        these flags are on by default.
+    */
+    wxWrapSizer(int orient = wxHORIZONTAL,
+                int flags = wxEXTEND_LAST_ON_EACH_LINE |
+                            wxREMOVE_LEADING_SPACES);
+
+    /**
+        Not used by an application. This is the mechanism by which sizers can inform
+        sub-items of the first determined size component. The sub-item can then better
+        determine its size requirements.
+        Returns @true if the information was used (and the sub-item min size was
+        updated).
+    */
+    bool InformFirstDirection(int direction, int size,
+                              int availableOtherDir);
+
+protected:
+    /**
+        Can be overridden in the derived classes to treat some normal items as
+        spacers.
+
+        This method is used to determine whether the given @a item should be
+        considered to be a spacer for the purposes of @c wxREMOVE_LEADING_SPACES
+        implementation. By default only returns @true for the real spacers.
+     */
+    virtual bool IsSpaceItem(wxSizerItem *item) const;
+};
+