def test_view_screenxy_offset():
"""View and nested views should be able to determine their screenxy offset.
"""
v = View(x=10, y=20, width=10, height=10)
v2 = View(x=-5, y=50, width=10, height=10)
# Before being nested.
assert v.offset_screenxy == (10, 20), "Assumes 0,0 as the default position from."
assert v2.offset_screenxy == (-5, 50), "Assumes 0,0 as the default position from."
v2.addchild(v)
assert v.offset_screenxy == (5, 70), "Parental offset is included."
assert v2.offset_screenxy == (-5, 50), "Children do not affect parent offset."
def test_view_centering():
"""View should correctly identify its center, even when contained.
"""
v = View(x=10, y=20, width=10, height=10)
v2 = View(x=-5, y=50, width=10, height=10)
# Before being nested.
assert v.center_screenxy == (15, 25), "Correct center before nesting."
assert v2.center_screenxy == (0, 55), "Correct center before nesting."
v2.addchild(v)
assert v.center == (5, 5), "Correct relative center after nesting."
assert v.center_screenxy == (10, 75), "Correct screen center after nesting."
assert v2.center == (5, 5), "Correct relative center after nesting."
assert v2.center_screenxy == (0, 55), "Correct screen center after nesting."
def test_view_contained_screenxy():
"""View can determine if a screen point is located within, even when nested.
"""
v = View(x=10, y=20, width=10, height=10)
v2 = View(x=-5, y=50, width=10, height=10)
point = (11, 21)
assert v.contained_screenxy(point) == True, "Point contained"
assert v2.contained_screenxy(point) == False, "Point not contained."
v2.addchild(v)
assert v.contained_screenxy(point) == False, "Point not contained."
assert v2.contained_screenxy(point) == False, "Point not contained."
def test_view_screenxy_to_relativexy():
"""View and nested views should be able to calculate points relative to
themselves.
"""
v = View(x=10, y=20, width=10, height=10)
v2 = View(x=-5, y=50, width=10, height=10)
point = (10, 10)
assert v.screenxy_to_relativexy(point) == (0, -10), "Point relative to view."
assert v2.screenxy_to_relativexy(point) == (15, -40), "Point relative to view."
v2.addchild(v)
assert v.screenxy_to_relativexy(point) == (5, -60), "Point relative to parent and self."
assert v2.screenxy_to_relativexy(point) == (15, -40), "Point does not change with children."
def test_view_z_sorting():
"""Views should be sorted by zindex when they are childviews.
"""
v = View(z=5)
v2 = View(z=2)
v3 = View(z=-1)
v4 = View(z=3)
vparent = View()
vparent.addchild(v)
vparent.addchild(v2)
vparent.addchild(v3)
vparent.addchild(v4)
assert vparent.childviews[0] == v3, "Sorting is correct."
assert vparent.childviews[1] == v2, "Sorting is correct."
assert vparent.childviews[2] == v4, "Sorting is correct."
assert vparent.childviews[3] == v, "Sorting is correct."
vparent.removechild(v)
assert len(vparent.childviews) == 3, "Childview correctly removed."
v4.removeself()
assert len(vparent.childviews) == 2, "Childview correctly removed."