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* bugfix: BSOD in #4.Kartik K. Agaram2022-06-111-2/+2
| | | | I messed up a function call in commit 391d764e13.
* stop handling nil screen_line_starting_pos everywhereKartik K. Agaram2022-06-101-23/+6
| | | | Things seem to be working..
* this fixes the immediate regressionKartik K. Agaram2022-06-101-19/+17
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* stop repeatedly checking for line wrappingKartik K. Agaram2022-06-101-7/+8
| | | | | | We have a regression since we started reclaiming love Text fragments more aggressively in commit 69c5d844ccc. Pressing pageup no longer knows about any line's screen lines. Not fixed yet.
* .Kartik K. Agaram2022-06-101-1/+1
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* extract scrolling logic out of insert_at_cursorKartik K. Agaram2022-06-101-6/+12
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* extract scrolling logic out of insert_returnKartik K. Agaram2022-06-101-4/+3
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* remove some memory leaks from rendered fragmentsKartik K. Agaram2022-06-101-0/+4
| | | | | | | | | | | | | | | All signs so far seem to be that CPU is cheap for this application, but memory is expensive. It's easy to get sluggish if the GC comes on. After some experiments using https://github.com/yaukeywang/LuaMemorySnapshotDump, one source of memory leaks is rendered fragments (https://love2d.org/wiki/Text objects). I need to render text in approximately word-sized fragments to mostly break lines more intelligently at word boundaries. I've attached the files I used for my experiments (suffixed with a '.') There's definitely still a leak in fragments. The longer I edit, the more memory goes to them.
* experiment: blinking cursorKartik K. Agaram2022-06-091-3/+6
| | | | | | | | | I've tried to keep the time period of the blinking similar to my terminal. Honestly I'm no longer sure if any of my experiments are showing a statistically significant result. Let's see how it feels over a period of time.
* the problem is that the cursor can occlude textKartik K. Agaram2022-06-091-1/+1
| | | | | | | And anything we do to reduce the occlusion also makes the cursor harder to acquire. I suppose this is why we need the blink.
* make the cursor a little thickerKartik K. Agaram2022-06-091-1/+1
| | | | | | | I'm testing this by moving the cursor around with my eyes closed, then starting a stopwatch as I open my eyes. This seems to help a bit. I'm able to acquire the cursor in 2s. At least the 10s outliers I used to have with the circle or thin line don't seem to be happening.
* experiment: line cursorKartik K. Agaram2022-06-091-1/+1
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* fix a crashKartik K. Agaram2022-06-061-1/+3
| | | | | This one isn't worth debugging. We know how to recreate this data on demand.
* additional logging for an active bugKartik K. Agaram2022-06-051-1/+5
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* another bugfix in scrolling while inserting textKartik K. Agaram2022-06-051-2/+1
| | | | | | I'm being unprincipled at the moment between pos and x,y coordinates. Whatever is more convenient. Perhaps a cleaner approach will come to me over time.
* bugfix in previous commitKartik K. Agaram2022-06-051-0/+3
| | | | | | | | I almost pushed this to production. That would have been catastrophic; the very first keystroke anyone typed into the editor would have failed. And in the process, this fixes the next bug on my TODO list! Paste on first line wasn't working. Now it is.
* check for scroll when just typingKartik K. Agaram2022-06-051-0/+5
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* renameKartik K. Agaram2022-06-051-5/+5
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* some unnecessary mutationsKartik K. Agaram2022-06-051-4/+0
| | | | | Why are we not modifying Screen_top1.pos in these places? Because we don't really need to modify Screen_top1 at all.
* some typosKartik K. Agaram2022-06-051-3/+3
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* bugfix: backspace from start of fileKartik K. Agaram2022-06-041-4/+1
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* regression: couldn't do many drawing operations because line.y was resetKartik K. Agaram2022-06-041-0/+1
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* experiment: slightly adaptive scrollingKartik K. Agaram2022-06-041-2/+14
| | | | | | | | | | | When long wrapping lines go past the current page, I find myself scrolling before I get to the bottom. So let's scroll less, usually from the start of the bottom-most line, even if it wraps multiple screen lines. The challenge with this is to ensure that a long line that fills the whole page by itself doesn't get you stuck. I take some care to make sure <pagedown> always makes forward progress.
* make cursor more obviousKartik K. Agaram2022-06-041-1/+1
| | | | | Let's see if this is good enough. I can also bump up to 4px radius if I need to.
* more precise search highlightingKartik K. Agaram2022-06-031-6/+2
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* extract a functionKartik K. Agaram2022-06-031-20/+1
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* extract a couple of filesKartik K. Agaram2022-06-031-1193/+4
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* bugfix: restore state after C-f (find)Kartik K. Agaram2022-06-031-4/+8
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* highlight selection while draggingKartik K. Agaram2022-06-031-12/+40
| | | | | | | Mouse stuff is pretty strenuous. For the first time I have to be careful not to recompute too often. And I ran into a race condition for the first time where resetting line.y within App.draw meant mouse clicks were extremely unlikely to see line.y set.
* select text using mouse dragKartik K. Agaram2022-06-031-2/+6
| | | | Doesn't yet highlight while dragging.
* up arrow to search previousKartik K. Agaram2022-06-031-0/+50
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* switch copy/paste to ctrl- hotkeysKartik K. Agaram2022-06-021-48/+1
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* switch undo/redo to ctrl- hotkeysKartik K. Agaram2022-06-021-22/+2
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* extract a new variableKartik K. Agaram2022-06-021-93/+61
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* crisp font renderingKartik K. Agaram2022-06-021-193/+135
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* find textKartik K. Agaram2022-06-021-4/+76
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* scroll if necessary on pasteKartik K. Agaram2022-06-021-0/+23
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* renameKartik K. Agaram2022-06-021-2/+2
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* test harness now supports copy/pasteKartik K. Agaram2022-06-021-3/+68
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* bugfix: pasting newlinesKartik K. Agaram2022-06-021-12/+21
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* more efficient undo/redoKartik K. Agaram2022-06-021-56/+36
| | | | | Now the bottleneck shifts to applying undo/redo in large files. But things should be snappy if you don't use the sluggish feature.
* renameKartik K. Agaram2022-06-021-12/+12
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* this implementation undo load-tests quite poorlyKartik K. Agaram2022-06-021-0/+28
| | | | | | Even a 10KB file gets sluggish within the first 1k characters inserted. We're not running out of memory, we're just overloading Lua's GC.
* after much struggle, a brute-force undoKartik K. Agaram2022-06-021-0/+125
| | | | | | | | | Incredibly inefficient, but I don't yet know how to efficiently encode undo mutations that can span multiple lines. There seems to be one bug related to creating new drawings; they're not spawning events and undoing past drawing creation has some weird artifacts. Redo seems to consistently work, though.
* avoid scrolling down if possibleKartik K. Agaram2022-05-301-1/+28
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* support non-text lines in Text.to2Kartik K. Agaram2022-05-301-1/+3
| | | | | Originally I was only using it on cursor line, but there's no reason that has to be true in general.
* regression: typing uppercase letters in textKartik K. Agaram2022-05-301-1/+1
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* .Kartik K. Agaram2022-05-291-4/+4
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* cut/copy selected text to clipboardKartik K. Agaram2022-05-291-0/+45
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* selecting text and deleting selectionsKartik K. Agaram2022-05-291-4/+291
| | | | | | I've written a few tests for delete_selection, but the way different operations initialize the selection seems fairly standard and not worth testing so far.