Merge pull request #1503 from Textualize/cursor-blink-bug

Converting cell position to index
This commit is contained in:
Will McGugan
2023-01-07 07:43:32 -08:00
committed by GitHub
4 changed files with 164 additions and 70 deletions

128
poetry.lock generated
View File

@@ -182,7 +182,7 @@ test = ["flake8 (==3.7.8)", "hypothesis (==3.55.3)"]
[[package]]
name = "coverage"
version = "7.0.1"
version = "7.0.3"
description = "Code coverage measurement for Python"
category = "dev"
optional = false
@@ -269,7 +269,7 @@ typing-extensions = {version = ">=3.7.4.3", markers = "python_version < \"3.8\""
[[package]]
name = "griffe"
version = "0.25.2"
version = "0.25.3"
description = "Signatures for entire Python programs. Extract the structure, the frame, the skeleton of your project, to generate API documentation or find breaking changes in your API."
category = "dev"
optional = false
@@ -313,7 +313,7 @@ socks = ["socksio (>=1.0.0,<2.0.0)"]
[[package]]
name = "httpx"
version = "0.23.2"
version = "0.23.3"
description = "The next generation HTTP client."
category = "dev"
optional = false
@@ -333,7 +333,7 @@ socks = ["socksio (>=1.0.0,<2.0.0)"]
[[package]]
name = "identify"
version = "2.5.11"
version = "2.5.12"
description = "File identification library for Python"
category = "dev"
optional = false
@@ -524,7 +524,7 @@ python-legacy = ["mkdocstrings-python-legacy (>=0.2.1)"]
[[package]]
name = "mkdocstrings-python"
version = "0.8.2"
version = "0.8.3"
description = "A Python handler for mkdocstrings."
category = "dev"
optional = false
@@ -1178,57 +1178,57 @@ commonmark = [
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{file = "coverage-7.0.3-cp39-cp39-musllinux_1_1_x86_64.whl", hash = "sha256:55e46fa4168ccb7497c9be78627fcb147e06f474f846a10d55feeb5108a24ef0"},
{file = "coverage-7.0.3-cp39-cp39-win32.whl", hash = "sha256:e3f1cd1cd65695b1540b3cf7828d05b3515974a9d7c7530f762ac40f58a18161"},
{file = "coverage-7.0.3-cp39-cp39-win_amd64.whl", hash = "sha256:d8249666c23683f74f8f93aeaa8794ac87cc61c40ff70374a825f3352a4371dc"},
{file = "coverage-7.0.3-pp37.pp38.pp39-none-any.whl", hash = "sha256:b1ffc8f58b81baed3f8962e28c30d99442079b82ce1ec836a1f67c0accad91c1"},
{file = "coverage-7.0.3.tar.gz", hash = "sha256:d5be4e93acce64f516bf4fd239c0e6118fc913c93fa1a3f52d15bdcc60d97b2d"},
]
distlib = [
{file = "distlib-0.3.6-py2.py3-none-any.whl", hash = "sha256:f35c4b692542ca110de7ef0bea44d73981caeb34ca0b9b6b2e6d7790dda8f80e"},
@@ -1331,8 +1331,8 @@ gitpython = [
{file = "GitPython-3.1.30.tar.gz", hash = "sha256:769c2d83e13f5d938b7688479da374c4e3d49f71549aaf462b646db9602ea6f8"},
]
griffe = [
{file = "griffe-0.25.2-py3-none-any.whl", hash = "sha256:0868da415c5f43fe186705c041d98b69523c24a6504e841031373eacfdd7ec05"},
{file = "griffe-0.25.2.tar.gz", hash = "sha256:555707b3417355e015d837845522cb38ee4ffcec485427868648eafacabe142e"},
{file = "griffe-0.25.3-py3-none-any.whl", hash = "sha256:c98e8471a4fc7675a7989f45563a9f7ccbfdfb1713725526d69dec1bbdcda74a"},
{file = "griffe-0.25.3.tar.gz", hash = "sha256:a71f156851649b3f0bdad6eb6bf7d7ac70e720a30da9f2d5a60e042480e92c03"},
]
h11 = [
{file = "h11-0.14.0-py3-none-any.whl", hash = "sha256:e3fe4ac4b851c468cc8363d500db52c2ead036020723024a109d37346efaa761"},
@@ -1343,12 +1343,12 @@ httpcore = [
{file = "httpcore-0.16.3.tar.gz", hash = "sha256:c5d6f04e2fc530f39e0c077e6a30caa53f1451096120f1f38b954afd0b17c0cb"},
]
httpx = [
{file = "httpx-0.23.2-py3-none-any.whl", hash = "sha256:106cded342a44e443060fab70ef327139248c61939e77d73964560c8d8b57069"},
{file = "httpx-0.23.2.tar.gz", hash = "sha256:e824a6fa18ffaa6423c6f3a32d5096fc15bd8dff43663a223f06242fc69451a8"},
{file = "httpx-0.23.3-py3-none-any.whl", hash = "sha256:a211fcce9b1254ea24f0cd6af9869b3d29aba40154e947d2a07bb499b3e310d6"},
{file = "httpx-0.23.3.tar.gz", hash = "sha256:9818458eb565bb54898ccb9b8b251a28785dd4a55afbc23d0eb410754fe7d0f9"},
]
identify = [
{file = "identify-2.5.11-py2.py3-none-any.whl", hash = "sha256:e7db36b772b188099616aaf2accbee122949d1c6a1bac4f38196720d6f9f06db"},
{file = "identify-2.5.11.tar.gz", hash = "sha256:14b7076b29c99b1b0b8b08e96d448c7b877a9b07683cd8cfda2ea06af85ffa1c"},
{file = "identify-2.5.12-py2.py3-none-any.whl", hash = "sha256:e8a400c3062d980243d27ce10455a52832205649bbcaf27ffddb3dfaaf477bad"},
{file = "identify-2.5.12.tar.gz", hash = "sha256:0bc96b09c838310b6fcfcc61f78a981ea07f94836ef6ef553da5bb5d4745d662"},
]
idna = [
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@@ -1441,8 +1441,8 @@ mkdocstrings = [
{file = "mkdocstrings-0.19.1.tar.gz", hash = "sha256:d1037cacb4b522c1e8c164ed5d00d724a82e49dcee0af80db8fb67b384faeef9"},
]
mkdocstrings-python = [
{file = "mkdocstrings-python-0.8.2.tar.gz", hash = "sha256:b22528b7a7a0589d007eced019d97ad14de4eba4b2b9ba6a013bb66edc74ab43"},
{file = "mkdocstrings_python-0.8.2-py3-none-any.whl", hash = "sha256:213d9592e66e084a9bd2fa4956d6294a3487c6dc9cc45164058d6317249b7b6e"},
{file = "mkdocstrings-python-0.8.3.tar.gz", hash = "sha256:9ae473f6dc599339b09eee17e4d2b05d6ac0ec29860f3fc9b7512d940fc61adf"},
{file = "mkdocstrings_python-0.8.3-py3-none-any.whl", hash = "sha256:4e6e1cd6f37a785de0946ced6eb846eb2f5d891ac1cc2c7b832943d3529087a7"},
]
msgpack = [
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View File

@@ -14,6 +14,56 @@ from .css.types import AlignHorizontal, AlignVertical
from .geometry import Size
class NoCellPositionForIndex(Exception):
pass
def index_to_cell_position(segments: Iterable[Segment], index: int) -> int:
"""Given a character index, return the cell position of that character within
an Iterable of Segments. This is the sum of the cell lengths of all the characters
*before* the character at `index`.
Args:
segments (Iterable[Segment]): The segments to find the cell position within.
index (int): The index to convert into a cell position.
Returns:
int: The cell position of the character at `index`.
Raises:
NoCellPositionForIndex: If the supplied index doesn't fall within the given segments.
"""
if not segments:
raise NoCellPositionForIndex
if index == 0:
return 0
cell_position_end = 0
segment_length = 0
segment_end_index = 0
segment_cell_length = 0
text = ""
iter_segments = iter(segments)
try:
while segment_end_index < index:
segment = next(iter_segments)
text = segment.text
segment_length = len(text)
segment_cell_length = cell_len(text)
cell_position_end += segment_cell_length
segment_end_index += segment_length
except StopIteration:
raise NoCellPositionForIndex
# Check how far into this segment the target index is
segment_index_start = segment_end_index - segment_length
index_within_segment = index - segment_index_start
segment_cell_start = cell_position_end - segment_cell_length
return segment_cell_start + cell_len(text[:index_within_segment])
def line_crop(
segments: list[Segment], start: int, end: int, total: int
) -> list[Segment]:

View File

@@ -10,6 +10,7 @@ from rich.style import Style
from ._cache import FIFOCache
from ._filter import LineFilter
from ._segment_tools import index_to_cell_position
@rich.repr.auto
@@ -68,6 +69,19 @@ class Strip:
"""
return [cls(segments, cell_length) for segments in lines]
def index_to_cell_position(self, index: int) -> int:
"""Given a character index, return the cell position of that character.
This is the sum of the cell lengths of all the characters *before* the character
at `index`.
Args:
index (int): The index to convert.
Returns:
int: The cell position of the character at `index`.
"""
return index_to_cell_position(self._segments, index)
@property
def cell_length(self) -> int:
"""Get the number of cells required to render this object."""

View File

@@ -1,6 +1,8 @@
import pytest
from rich.segment import Segment
from rich.style import Style
from textual._segment_tools import NoCellPositionForIndex
from textual.strip import Strip
from textual._filter import Monochrome
@@ -62,9 +64,7 @@ def test_eq():
def test_adjust_cell_length():
for repeat in range(3):
assert Strip([]).adjust_cell_length(3) == Strip([Segment(" ")])
assert Strip([Segment("f")]).adjust_cell_length(3) == Strip(
[Segment("f"), Segment(" ")]
@@ -119,9 +119,7 @@ def test_style_links():
def test_crop():
for repeat in range(3):
assert Strip([Segment("foo")]).crop(0, 3) == Strip([Segment("foo")])
assert Strip([Segment("foo")]).crop(0, 2) == Strip([Segment("fo")])
assert Strip([Segment("foo")]).crop(0, 1) == Strip([Segment("f")])
@@ -136,10 +134,42 @@ def test_crop():
def test_divide():
for repeat in range(3):
assert Strip([Segment("foo")]).divide([1, 2]) == [
Strip([Segment("f")]),
Strip([Segment("o")]),
]
@pytest.mark.parametrize(
"index,cell_position",
[
(0, 0),
(1, 1),
(2, 2),
(3, 3),
(4, 4),
(5, 6),
(6, 8),
(7, 10),
(8, 11),
(9, 12),
(10, 13),
(11, 14),
],
)
def test_index_to_cell_position(index, cell_position):
strip = Strip([Segment("ab"), Segment("cd日本語ef"), Segment("gh")])
assert cell_position == strip.index_to_cell_position(index)
def test_index_cell_position_no_segments():
strip = Strip([])
with pytest.raises(NoCellPositionForIndex):
strip.index_to_cell_position(2)
def test_index_cell_position_index_too_large():
strip = Strip([Segment("abcdef"), Segment("ghi")])
with pytest.raises(NoCellPositionForIndex):
strip.index_to_cell_position(100)