For unknown reasons, GTK3 may send resize events when editing grid
fields. This can cause the grid editor to exit, losing the focus and
overwritting the characters at the next input.
We avoid this by filtering the size events when the size doesn't change.
Fixes: lp:1817810
* https://bugs.launchpad.net/kicad/+bug/1817810
Move the class DIALOG_EDIT_COMPONENT_IN_SCHEMATIC to its own
header, and move the SCH_EDIT_FRAME::EditComponent out of the
dialog implementation file. Thus, users of the dialog are
coupled only by the dialog header, as usual.
Also tidy some includes and comments.
* Warn the user that fields with no value and not it the field template list
will be removed from the component before exiting the edit component in
schematic dialog.
* Add a function to TEMPLATES class to check if template list contains a
field with a given name.
* Move the function to display the edit component in schematic dialog into
the SCH_EDIT_FRAME class.
* Doxygen and coding style policy fixes.
* Remove unused member variable m_SizeVisu from base screen object.
* Move nearest grid position code into base screen object.
* Add get cursor position method to base screen object.
* Add position parameter to OnHotKey method in base draw frame and all
derived objects.
* Pass logical position on left mouse button click and double click
events instead of device position.
* Pass logical position to on right mouse button click instead of device
position.
* Use logical event position parameter for locating items in EESchema
instead of the stored position.
* Remove unused position parameter when displaying component edit dialog
in EESchema.
* Comment out debugging macro in eeschema/template_field_names.cpp that was
preventing debug builds using wxWidgets 2.8.x.