g.gui.animation deprecation messages

[veroandreo]

When calling G7:g.gui.animation from terminal and creating the animation, I get the following message:

/home/veroandreo/software/grass78_git/dist.x86_64-pc-linux-gnu/gui/wxpython/animation/provider.py:523: wxPyDeprecationWarning: Call to deprecated item BitmapFromImage. Use :class:`wx.Bitmap` instead
  wx.Image(filename))

and when clicking over Export animation, I get something similar:

 /home/veroandreo/software/grass78_git/dist.x86_64-pc-linux-gnu/gui/wxpython/animation/dialogs.py:1088: wxPyDeprecationWarning: Call to deprecated item EmptyImage. Use :class:`Image` instead.
  filetype, ltype = GetImageHandlers(wx.EmptyImage(10, 10))

[veroandreo]

After the backport, I tested the animation export. It works now, but I get this new message in the terminal:

/home/veroandreo/software/grass78_git/dist.x86_64-pc-linux-gnu/gui/wxpython/animation/controller.py:554: wxPyDeprecationWarning: Call to deprecated item EmptyImage. Use :class:`Image` instead.
  image = wx.EmptyImage(*size)
/home/veroandreo/software/grass78_git/dist.x86_64-pc-linux-gnu/gui/wxpython/animation/controller.py:571: wxPyDeprecationWarning: Call to deprecated item ImageFromBitmap. Use bitmap.ConvertToImage instead.
  im = wx.ImageFromBitmap(lastBitmaps[i])

[neteler]

Ticket retargeted after milestone closed

[neteler]

See ​https://github.com/OSGeo/grass/pull/149

[annakrat]

Merged and backported.