| Commit message (Collapse) | Author | Age |
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char_idx_at_visual_row_offset asssumed that a single line/block break
always corresponded to a vertical offset of 1. However conceal can hide
the line break (in which case the certical offset would be 0) and line
annotations (or softwrapped inlay hints at the end of the line) can insert
addtional vertical lines.
To correctly account for these cases we simply compute the visual offset
of the start of the next block from the previous block instead of the
visual offset of the block end. This means that the line breaks at the
end of the block (however many there may be) are automatically included
and we don't need to manually add 1 to the `row_offset` anymore.
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The top of a view is marked by a char idx anchor. That char idx is
usually the first character of the visual line it's on. We use a char
index instead of a line index because the view may start in the middle
of a line with soft wrapping. However, it's possible to temporarily
endup in a state where this anchor is not the first character of the
first visual line. This is pretty rare because edits usually happen
inside/after the view. In most cases we handle this case correctly.
However, if the cursor is before the anchor (but still in view)
there can be crashes or visual artifacts. This is caused by the fact
that visual_offset_from_anchor (and the positioning code in view.rs)
incorrectly assumed that the (cursor) position is always after the
view anchor if the cursor is in view. But if the anchor is not the
first character of the first visual line this is not the case anymore.
In that case crashes and visual artifacts are possible. This commit
fixes that problem by changing `visual_offset_from_anchor` (and
callsites) to properly consider that case.
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* rework positioning/rendering, enables softwrap/virtual text
This commit is a large rework of the core text positioning and
rendering code in helix to remove the assumption that on-screen
columns/lines correspond to text columns/lines.
A generic `DocFormatter` is introduced that positions graphemes on
and is used both for rendering and for movements/scrolling.
Both virtual text support (inline, grapheme overlay and multi-line)
and a capable softwrap implementation is included.
fix picker highlight
cleanup doc formatter, use word bondaries for wrapping
make visual vertical movement a seperate commnad
estimate line gutter width to improve performance
cache cursor position
cleanup and optimize doc formatter
cleanup documentation
fix typos
Co-authored-by: Daniel Hines <d4hines@gmail.com>
update documentation
fix panic in last_visual_line funciton
improve soft-wrap documentation
add extend_visual_line_up/down commands
fix non-visual vertical movement
streamline virtual text highlighting, add softwrap indicator
fix cursor position if softwrap is disabled
improve documentation of text_annotations module
avoid crashes if view anchor is out of bounds
fix: consider horizontal offset when traslation char_idx -> vpos
improve default configuration
fix: mixed up horizontal and vertical offset
reset view position after config reload
apply suggestions from review
disabled softwrap for very small screens to avoid endless spin
fix wrap_indicator setting
fix bar cursor disappearring on the EOF character
add keybinding for linewise vertical movement
fix: inconsistent gutter highlights
improve virtual text API
make scope idx lookup more ergonomic
allow overlapping overlays
correctly track char_pos for virtual text
adjust configuration
deprecate old position fucntions
fix infinite loop in highlight lookup
fix gutter style
fix formatting
document max-line-width interaction with softwrap
change wrap-indicator example to use empty string
fix: rare panic when view is in invalid state (bis)
* Apply suggestions from code review
Co-authored-by: Michael Davis <mcarsondavis@gmail.com>
* improve documentation for positoning functions
* simplify tests
* fix documentation of Grapheme::width
* Apply suggestions from code review
Co-authored-by: Michael Davis <mcarsondavis@gmail.com>
* add explicit drop invocation
* Add explicit MoveFn type alias
* add docuntation to Editor::cursor_cache
* fix a few typos
* explain use of allow(deprecated)
* make gj and gk extend in select mode
* remove unneded debug and TODO
* mark tab_width_at #[inline]
* add fast-path to move_vertically_visual in case softwrap is disabled
* rename first_line to first_visual_line
* simplify duplicate if/else
---------
Co-authored-by: Michael Davis <mcarsondavis@gmail.com>
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* feat: make `move_vertically` aware of tabs and wide characters
* refactor: replace unnecessary checked_sub with comparison
* refactor: leave pos_at_coords unchanged and introduce separate pos_at_visual_coords
* style: include comment to explain `pos_at_visual_coords` breaking condition
* refactor: use `pos_at_visual_coords` in `text_pos_at_screen_coords`
* feat: make `copy_selection_on_line` aware of wide characters
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Each tab is just wide enough to round to the nearest tab stop.
Refs #1243
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Like helix-term/src/commands.rs:3426:15
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The issue affected files with lots of tabs at the start as well.
Fix #840
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Particularly the effect of the `limit_before_line_ending`
parameter.
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Still needs to be done, but should be part of a separate PR.
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I'm not sure how to address them, because they look like they
might be bugs, and code is involved. Will poke the relevant people.
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Still a bunch more warnings to fix in core, but it's a start.
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Also some general cleanup and some minor fixes along the way.
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