This widget is used to draw tiled textured areas.
source - texture file path
offset_x, offset_y - texture offset on X-axis and Y-axis. Used to make "flowing" textures (default: 0, 0)
scale - texture scale (default: 1.0)
color - color tint of texture (default: [1, 1, 1, 1])
on_drag(widget, touch) - fires, when user drags TexturedWidget