Editor enhance2

[joco-nz]

[1] application.py: Fixed font load loop. As exiting on a non 0 return to the font load. That return value is actually an index to the loaded font to allow later referencing if needed. An error is a -1 return. So made the test a < 0 assessment as 0+ is success.

[2] gcode_editor.py:

• collapsed editor classes into a single class
• implimented getters/setters using annotations to support QSS control of lexer coloring and some base editor coloring
• combined Don Bozarth's lexer updates to give more syntax coloring. This may have implications of needed a darker background in the editor.
• Sublassed off VCPBaseWidget to allow rules to be applied to the editor. Also means the initlaize/terminate calls can be used
• QSS setting of font. All that is needed is the Font Family Name. Utiliising font database loading from yaml means custom fonts can be shipped/used in a gui.
• added a new Slot for refreshing the editors lexer font to support dynamic font changing
• Improved "Save" to save to a system wide /tmp location if no file name in place. Expectation is user will do a Save As at some point to put some place sensible for them.
• Using standard Save As dialogue
• dynamic gutter size setting based on file load and when new lines are entered into the editor

Hopefully all makes sense. Cheers, James.

[KurtJacobson]

This work was superseded by the new QPlainTextEdit based GcodeEditor.