Second part

THINGS WE HAVE DONE:

The interface has been redesigned.
New buttons:

• rotation -> Rotates the graphicsView by 90 degrees.
• Add Layer -> Adds new layer on graphicsView.
• Show All -> Merge all opened layers.
• Shapes -> This button has been improved and now user can select the shape he wants to draw(rectangle, triangle, ellipse, circle).

ListWidget has been added on the scene, which contains list of open layers.
Almost all functionalities of the previously created buttons are implemented.

TODO:

In the next part, the functionality of the zoom buttons should be implemented. Also, working with layers should be further edited.