Add peptide monomers to canvas (by click)

[KsenMs]

Background

This task covers adding peptide monomers to the canvas.
This is a basic version (add by click), more advanced (drag and drop) version of adding peptide monomers to canvas will be described separately.

Requirements

1. User adds peptide monomers to canvas in the following way:

• User clicks on a peptide monomer in the peptide library
• Selected peptide monomer becomes highlighted
• When a user clicks at the canvas selected peptide monomer is added to the place of a click
• After selected peptide monomer is added to the canvas, the monomer remains selected in the library and can be added again

2. Peptide monomers are added to the canvas in a form of a regular hexagon
3. Peptide monomers are added to the canvas in a color that corresponds to the color in the peptide library

[PetrKurkin]

Adding monomers on canvas flow pictures

[PetrKurkin]

Updated view of monomers

[MartaWilliams]

Tested