GSoC/2018/StatusReports/AmanKumarGupta

GCompris: Port all GTK+ piano activities to Qt and get one step closer to version 1.0

GCompris is an educational software suite comprising of numerous activities for children aged 2 to 10. Originally written in Gtk+ its development team started to rewrite it from scratch in Qt Quick. My aim is to port all the piano-based musical activities which are one of the most important activities that we are missing to have a complete 1.0.

Mentors: Divyam Madaan and Emmanuel Charruau

Project Goals

Finish the port of Piano composition activity and add more features.
Porting of GTK+ Play piano activity from scratch to QtQuick.
Re-design and implement Note names activity.
Porting of GTK+ Play rhythm activity from scratch to Qt.

Work Report

Piano Composition

Introduction:

This activity teaches the users how to compose melodies with piano by offering them certain components like notes, rests and many features like erase, replace, undo etc.

Implementation:

1. Improved melody loader window UI.

2. Made multiple staff view flickable and add more staffs when needed.

3. Reworked the code base according to IPN Notation.

4. Added contexts for translators.

5. Added rests.

6. Added replace and erase features.

7. Added undo feature.

8. Separated Note data from the Staff view.

9. Added feature to display lyrics and other details of the music loaded.

10. Made note-type options toggable.

11. Added more octaves for treble (E3 to F6) and bass clefs (C3 to F4).

12. Created new SVG images with ledger lines.

13. Made a common API for all the types of elements on the staff.

14. Did code cleanup and refactorizations.

Status:

The activity is complete and is currently under testing and review.

Screenshots:

Music Loader window

Melody composed with piano

Lyrics for the music loaded

Play piano

Introduction:

This activity aims to let the user understand how the piano keyboard can play rhythm as written on the musical staff by replicating the ones that are presented.