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Checker example 4, docs and diagram

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This commit is contained in:
Will McGugan
2023-02-04 15:40:36 +01:00
parent 25b498896d
commit fb7c1642bc
3 changed files with 49 additions and 10 deletions
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12
docs/examples/guide/widgets/checker04.py
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@@ -26,11 +26,11 @@ class CheckerBoard(ScrollView):
background: #004578;
}
CheckerBoard > .checkerboard--cursor-square {
background: darkred
background: darkred;
}
"""
cursor_square: var[Offset | None] = var(None)
cursor_square = var(Offset(0, 0))
def __init__(self, board_size: int) -> None:
super().__init__()
@@ -44,7 +44,7 @@ class CheckerBoard(ScrollView):
self.cursor_square = Offset(mouse_position.x // 8, mouse_position.y // 4)
def watch_cursor_square(
self, previous_square: Offset | None, cursor_square: Offset | None
self, previous_square: Offset, cursor_square: Offset
) -> None:
"""Called when the cursor square changes."""
@@ -57,12 +57,10 @@ class CheckerBoard(ScrollView):
return region
# Refresh the previous cursor square
if previous_square is not None:
self.refresh(get_square_region(previous_square))
self.refresh(get_square_region(previous_square))
# Refresh the new cursor square
if cursor_square is not None:
self.refresh(get_square_region(cursor_square))
self.refresh(get_square_region(cursor_square))
def render_line(self, y: int) -> Strip:
"""Render a line of the widget. y is relative to the top of the widget."""