key board shortcuts for color selection of browse

[degiy]

I love lorien, cause the direct key mapping that Xournal++ does not allow (because of gtk keys override). But the fast color change was missing so I modified the code to map my first row of keys (1,2,...) to colors and it fits my needs (architecture fast drawing on meetings). I spend one hour on installing godot, lorien and patch the code, it's very intuitive. My patch is ugly and should use signals instead to activate the palette and to it clean, but I let the code if anyone has a similar need as I had.

In InfiniteCanvas.gd, replace _unhandled_key_input with :

func _unhandled_key_input(event: InputEvent) -> void:
if event is InputEventKey:
if event.pressed:
if event.keycode == 39:
_brush_color=Color("white")
elif event.keycode == 49:
_brush_color=Color("red")
elif event.keycode == 50:
_brush_color=Color("green")
elif event.keycode == 51:
_brush_color=Color("yellow")
elif event.keycode == 52:
_brush_color=Color("blue")
elif event.keycode == 53:
_brush_color=Color("purple")
elif event.keycode == 54:
_brush_color=Color("cyan")
elif event.keycode == 55:
_brush_color=Color("orange")
elif event.keycode == 56:
_brush_color=Color("brown")
elif event.keycode == 57:
_brush_color=Color("gray")
_process_event(event)