Shuffle some FloatCanvas code around a little to avoid a circular import problem.

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75719 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
PR64: Various Phoenix and Py3 fixes for the demo and library

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75720 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix a missed wx.ArtProvider_GetBitmap to wx.ArtProvider.GetBitmap change.

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75721 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
added auto resizing to the ScaledBitmap2 Demo.



git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@75722 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775