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textual/tests/test_box_model.py
Will McGugan 51dbf16d45 faster layout
2025-10-06 09:21:49 +01:00

190 lines
6.1 KiB
Python

from __future__ import annotations
from fractions import Fraction
from textual.box_model import BoxModel
from textual.geometry import Size, Spacing
from textual.widget import Widget
def test_content_box():
one = Fraction(1)
class TestWidget(Widget):
def get_content_width(self, container: Size, parent: Size) -> int:
assert False, "must not be called"
def get_content_height(self, container: Size, parent: Size) -> int:
assert False, "must not be called"
widget = TestWidget()
# border-box is default
assert widget.styles.box_sizing == "border-box"
widget.styles.width = 10
widget.styles.height = 8
widget.styles.padding = 1
widget.styles.border = ("solid", "red")
box_model = widget._get_box_model(
Size(60, 20),
Size(80, 24),
one,
one,
)
# Size should be inclusive of padding / border
assert box_model == BoxModel(Fraction(10), Fraction(8), Spacing(0, 0, 0, 0))
# Switch to content-box
widget.styles.box_sizing = "content-box"
box_model = widget._get_box_model(Size(60, 20), Size(80, 24), one, one)
# width and height have added padding / border to accommodate content
assert box_model == BoxModel(Fraction(14), Fraction(12), Spacing(0, 0, 0, 0))
def test_width():
"""Test width settings."""
one = Fraction(1)
class TestWidget(Widget):
def get_content_width(self, container: Size, parent: Size) -> int:
return 10
def get_content_height(self, container: Size, parent: Size, width: int) -> int:
return 10
widget = TestWidget()
styles = widget.styles
box_model = widget._get_box_model(Size(60, 20), Size(80, 24), one, one)
assert box_model == BoxModel(Fraction(60), Fraction(20), Spacing(0, 0, 0, 0))
# Add a margin and check that it is reported
styles.margin = (1, 2, 3, 4)
box_model = widget._get_box_model(Size(60, 20), Size(80, 24), one, one)
assert box_model == BoxModel(Fraction(54), Fraction(16), Spacing(1, 2, 3, 4))
# Set width to auto-detect
styles.width = "auto"
box_model = widget._get_box_model(Size(60, 20), Size(80, 24), one, one)
# Setting width to auto should call get_auto_width
assert box_model == BoxModel(Fraction(10), Fraction(16), Spacing(1, 2, 3, 4))
# Set width to 100 vw which should make it the width of the parent
styles.width = "100vw"
box_model = widget._get_box_model(Size(60, 20), Size(80, 24), one, one)
assert box_model == BoxModel(Fraction(80), Fraction(16), Spacing(1, 2, 3, 4))
# Set the width to 100% should make it fill the container size
styles.width = "100%"
box_model = widget._get_box_model(Size(60, 20), Size(80, 24), one, one)
assert box_model == BoxModel(Fraction(54), Fraction(16), Spacing(1, 2, 3, 4))
styles.width = "100vw"
styles.max_width = "50%"
box_model = widget._get_box_model(Size(60, 20), Size(80, 24), one, one)
assert box_model == BoxModel(Fraction(27), Fraction(16), Spacing(1, 2, 3, 4))
def test_height():
"""Test height settings."""
one = Fraction(1)
class TestWidget(Widget):
def get_content_width(self, container: Size, parent: Size) -> int:
return 10
def get_content_height(self, container: Size, parent: Size, width: int) -> int:
return 10
widget = TestWidget()
styles = widget.styles
box_model = widget._get_box_model(Size(60, 20), Size(80, 24), one, one)
assert box_model == BoxModel(Fraction(60), Fraction(20), Spacing(0, 0, 0, 0))
# Add a margin and check that it is reported
styles.margin = (1, 2, 3, 4)
box_model = widget._get_box_model(Size(60, 20), Size(80, 24), one, one)
assert box_model == BoxModel(Fraction(54), Fraction(16), Spacing(1, 2, 3, 4))
# Set height to 100 vw which should make it the height of the parent
styles.height = "100vh"
box_model = widget._get_box_model(Size(60, 20), Size(80, 24), one, one)
assert box_model == BoxModel(Fraction(54), Fraction(24), Spacing(1, 2, 3, 4))
# Set the height to 100% should make it fill the container size
styles.height = "100%"
box_model = widget._get_box_model(Size(60, 20), Size(80, 24), one, one)
assert box_model == BoxModel(Fraction(54), Fraction(16), Spacing(1, 2, 3, 4))
styles.height = "auto"
styles.margin = 2
box_model = widget._get_box_model(Size(60, 20), Size(80, 24), one, one)
assert box_model == BoxModel(Fraction(56), Fraction(10), Spacing(2, 2, 2, 2))
styles.margin = 1, 2, 3, 4
styles.height = "100vh"
styles.max_height = "50%"
box_model = widget._get_box_model(Size(60, 20), Size(80, 24), one, one)
assert box_model == BoxModel(Fraction(54), Fraction(8), Spacing(1, 2, 3, 4))
def test_max():
"""Check that max_width and max_height are respected."""
one = Fraction(1)
class TestWidget(Widget):
def get_content_width(self, container: Size, parent: Size) -> int:
assert False, "must not be called"
def get_content_height(self, container: Size, parent: Size, width: int) -> int:
assert False, "must not be called"
widget = TestWidget()
styles = widget.styles
styles.width = 100
styles.height = 80
styles.max_width = 40
styles.max_height = 30
box_model = widget._get_box_model(Size(40, 30), Size(80, 24), one, one)
assert box_model == BoxModel(Fraction(40), Fraction(30), Spacing(0, 0, 0, 0))
def test_min():
"""Check that min_width and min_height are respected."""
one = Fraction(1)
class TestWidget(Widget):
def get_content_width(self, container: Size, parent: Size) -> int:
assert False, "must not be called"
def get_content_height(self, container: Size, parent: Size, width: int) -> int:
assert False, "must not be called"
widget = TestWidget()
styles = widget.styles
styles.width = 10
styles.height = 5
styles.min_width = 40
styles.min_height = 30
box_model = widget._get_box_model(Size(40, 30), Size(80, 24), one, one)
assert box_model == BoxModel(Fraction(40), Fraction(30), Spacing(0, 0, 0, 0))