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Add the half triangle box chars

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Kovid Goyal 2020-09-03 11:22:36 +05:30
parent e95c789d4b
commit 9d3a9e9d1e
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 38 additions and 2 deletions
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kitty/fonts/box_drawing.py
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@ -184,11 +184,12 @@ def supersampled(supersample_factor: int = 4) -> Callable:
return create_wrapper
def fill_region(buf: BufType, width: int, height: int, xlimits: Iterable[Iterable[float]]) -> None:
def fill_region(buf: BufType, width: int, height: int, xlimits: Iterable[Iterable[float]], inverted: bool = False) -> None:
full, empty = (0, 255) if inverted else (255, 0)
for y in range(height):
offset = y * width
for x, (upper, lower) in enumerate(xlimits):
buf[x + offset] = 255 if upper <= y <= lower else 0
buf[x + offset] = full if upper <= y <= lower else empty
def line_equation(x1: int, y1: int, x2: int, y2: int) -> Callable[[int], float]:
@ -231,6 +232,32 @@ def corner_triangle(buf: BufType, width: int, height: int, corner: str) -> None:
fill_region(buf, width, height, xlimits)
@supersampled()
def half_triangle(buf: BufType, width: int, height: int, which: str = 'left', inverted: bool = False) -> None:
mid_x, mid_y = width // 2, height // 2
if which == 'left':
upper_y = line_equation(0, 0, mid_x, mid_y)
lower_y = line_equation(0, height - 1, mid_x, mid_y)
limits = tuple((upper_y(x), lower_y(x)) for x in range(width))
elif which == 'top':
first_y = line_equation(0, 0, mid_x, mid_y)
first = tuple((0, first_y(x)) for x in range(mid_x))
second_y = line_equation(mid_x, mid_y, width - 1, 0)
second = tuple((0, second_y(x)) for x in range(mid_x, width))
limits = first + second
elif which == 'right':
upper_y = line_equation(mid_x, mid_y, width - 1, 0)
lower_y = line_equation(mid_x, mid_y, width - 1, height - 1)
limits = tuple((upper_y(x), lower_y(x)) for x in range(width))
elif which == 'bottom':
first_y = line_equation(0, height - 1, mid_x, mid_y)
first_ = tuple((first_y(x), height - 1) for x in range(mid_x))
second_y = line_equation(mid_x, mid_y, width - 1, height - 1)
second_ = tuple((second_y(x), height - 1) for x in range(mid_x, width))
limits = first_ + second_
fill_region(buf, width, height, limits, inverted)
def thick_line(buf: BufType, width: int, height: int, thickness_in_pixels: int, p1: Tuple[int, int], p2: Tuple[int, int]) -> None:
if p1[0] > p2[0]:
p1, p2 = p2, p1
@ -790,6 +817,15 @@ box_chars: Dict[str, List[Callable]] = {
'🭦': [p(smooth_mosaic, lower=False, a=(0.5, 0), b=(1, 1))],
'🭧': [p(smooth_mosaic, lower=False, a=(0, 0.25), b=(1, 0.75))],
'🭨': [p(half_triangle, inverted=True)],
'🭩': [p(half_triangle, which='top', inverted=True)],
'🭪': [p(half_triangle, which='right', inverted=True)],
'🭫': [p(half_triangle, which='bottom', inverted=True)],
'🭬': [half_triangle],
'🭭': [p(half_triangle, which='top')],
'🭮': [p(half_triangle, which='right')],
'🭯': [p(half_triangle, which='bottom')],
'🭼': [eight_bar, p(eight_bar, which=7, horizontal=True)],
'🭽': [eight_bar, p(eight_bar, horizontal=True)],
'🭾': [p(eight_bar, which=7), p(eight_bar, horizontal=True)],