T33: a drag that comes back where it set off gives the width it had, through Ely da3fdca, where review round 2 found the last width it reported kept; the width a drag sets off from lives with its press

AGENTS.md

@@ -95,4 +95,4 @@ ELYTerminal. A terminal on GPUI and Ely components. `PRD.md` says what it does;
 - 2026-10-16: on Hyprland 0.56 a window blurs only while Hyprland's own `decoration:blur:enabled` is on: its `shouldBlur` reads that option first, then the window's `no_blur`, RGBX and opaque rules, then the blur region a surface sets through `ext_background_effect_v1`, which Hyprland offers with the blur capability whatever the option says. Omarchy 4.0.4's default `looknfeel.lua` turns the option off, so on Omarchy no window blurs until the user turns it on; ELYTerminal leaves the compositor's settings alone. On the owner's Omarchy the log named `ext_background_effect_v1` and the pane's region, and the wallpaper behind the window blurred with the option on and showed sharp with it off.
 - 2026-10-16: herdr 0.9 keeps its panes' OSC 7 and writes only a title, notifications, OSC 52 and bells to the terminal it runs in, so no terminal hears a folder from inside it; herdr's server knows each pane's `cwd`, the folder its shell reported, else the shell's own. On macOS and Linux each session asks twice a second which process group leads its pty's foreground (`tcgetpgrp` on a copy of the master) and what executable that group's leader runs: an exec keeps the group and swaps the executable, so `exec herdr` from a shell is a new program, and one that did not read is tried again; on Linux the ` (deleted)` mark an update leaves on a running executable is set aside. When that executable is `herdr` and its arguments start herdr's terminal client (no command, `session attach NAME` or `client`), ELYTerminal reads the client's arguments and variables (`/proc` on Linux; `KERN_PROCARGS2` on macOS, which hides only the variables of Apple's own programs) and finds its socket as herdr 0.9 does: `--session NAME`, then `HERDR_SOCKET_PATH`, then `HERDR_SESSION`, under `$XDG_CONFIG_HOME/herdr`, else `~/.config/herdr`; a relative socket lies in the client's folder, as herdr reads it (`/proc/PID/cwd`; `proc_pidinfo` on macOS). It asks that socket for `session.snapshot` twice a second, a connection each, since herdr closes one after its reply, and reports the focused pane's `cwd` as the session's folder when it changes and again each time herdr takes the foreground; an answer that lands after the shell reported a folder is dropped, since the shell reports only once herdr has left. Focus belongs to herdr's server, so clients of one server follow one focus; a client of another machine's server (`--remote`, `--machine`) is logged, not followed. A failure is logged once while it lasts. On Windows, which has no foreground group, a Toolhelp32 snapshot lists the `herdr.exe` processes at or under the session's shell, none under another herdr, since what a herdr starts, its server too, is its own; when that list changes, `sysinfo` reads their arguments and variables, nearest first, names in upper case, as Windows matches them, and the first terminal client is followed, a server or a command beside it passed by; its folder is found as herdr 0.9 finds it there, `XDG_CONFIG_HOME`, then `APPDATA`, then `USERPROFILE\AppData\Roaming`, then `HOME\.config`; and its server answers on the pipe herdr names `\\.\pipe\` and the socket's path as written, relative or not. A busy pipe is waited for, as herdr's client waits, and the pipe's server may identify ELYTerminal but never act as it. The pipe has no timeout: a herdr that never answers holds that session's follow until it answers or exits.
 - 2026-10-16: the main window opens at the size it was left at, which the owner asked for on macOS, Windows and Linux: `window_width` and `window_height` in the settings hold the size gpui's `window_bounds` gives 0.5 s after the bounds settle, saved through `SettingsStore::update`, which writes only a change, so a drag saves once and a move saves nothing. A maximized, full-screen or hidden window keeps the size from before; its state and size are read once they settle, since X11 marks a window maximized after its new size, gpui's X11 window then gives a maximized window's own size, and it calls a maximized window unmaximized while minimized. A window that shows again, uncovered, restored or back on its screen, is read again, so a size it took just before it hid is kept; a size it takes in the half second before it closes, or before it hides until the app quits, is lost. The window is no smaller than 100 by 100, the least the settings keep, or a smaller size the platform allows could not be kept. The window opens centered at whole points, since macOS grows a window by a point on a side whose edge falls on a half point; its place is not kept, and a kept side past the primary display's visible area shrinks to it, logged. A size outside 100 to 16384 stops the start, as any value out of range does.
-- 2026-10-16: the sessions and right columns resize by a drag on their border toward the terminal, which the owner asked for on macOS, Windows and Linux. Ely's `ShellColumn::resizable`, added to Ely for this, puts Ely's `resize_handle` on the border toward the filling column, the sessions column's right and the right column's left: the handle draws that border, a filled hairline, since gpui paints a border no wider than half its box, and the line it drew at first showed half a pixel on macOS and none on X11; it occludes the header under it, so a press there drags the border, not the window, on Windows too, where an unoccluded drag region takes the press as the caption. A drag sets off from the wider of the width drawn and the one kept: a header's parts may hold a column wider, and a window too narrow for both widths squeezes them, where a drag from the squeezed width jumped back against the pointer; a drag that has not moved sideways changes nothing. A set width in Ely became a flex basis, so a column holds its header's own parts: at a set width under them, Windows' caption buttons ran out of the window. The widths, 160 to 960 pixels, show at once and are saved in `sessions_width` and `panel_width` through `SettingsStore::update` 0.5 s after a drag rests, as the window's size is; a drag in the half second before the window closes is lost, and a save the store refuses puts the columns back. A window too narrow for both yields the terminal its header's width, as Ely's set widths give way.
+- 2026-10-16: the sessions and right columns resize by a drag on their border toward the terminal, which the owner asked for on macOS, Windows and Linux. Ely's `ShellColumn::resizable`, added to Ely for this, puts Ely's `resize_handle` on the border toward the filling column, the sessions column's right and the right column's left: the handle draws that border, a filled hairline, since gpui paints a border no wider than half its box, and the line it drew at first showed half a pixel on macOS and none on X11; it occludes the header under it, so a press there drags the border, not the window, on Windows too, where an unoccluded drag region takes the press as the caption. A drag sets off from the wider of the width drawn and the one kept: a header's parts may hold a column wider, and a window too narrow for both widths squeezes them, where a drag from the squeezed width jumped back against the pointer; a drag that has not moved sideways changes nothing, and one that comes back where it set off gives the width it had. A set width in Ely became a flex basis, so a column holds its header's own parts: at a set width under them, Windows' caption buttons ran out of the window. The widths, 160 to 960 pixels, show at once and are saved in `sessions_width` and `panel_width` through `SettingsStore::update` 0.5 s after a drag rests, as the window's size is; a drag in the half second before the window closes is lost, and a save the store refuses puts the columns back. A window too narrow for both yields the terminal its header's width, as Ely's set widths give way.

Cargo.lock

@@ -1701,7 +1701,7 @@ checksum = "0e9c71c2167ca323c882b99918929403426e2373ea17242ff5653e0d5e1058be"
 [[package]]
 name = "ely-gpui-component"
 version = "0.1.1"
-source = "git+https://git.zacharyzhang.com/ZacharyZhang-NY/Ely-GPUI-Components.git?rev=0b4848bb2aadfc00f21eccdef94e306f8fbc61df#0b4848bb2aadfc00f21eccdef94e306f8fbc61df"
+source = "git+https://git.zacharyzhang.com/ZacharyZhang-NY/Ely-GPUI-Components.git?rev=da3fdcaf39f2fa85ce1dd9cad07c3c81cf1dd721#da3fdcaf39f2fa85ce1dd9cad07c3c81cf1dd721"
 dependencies = [
  "alacritty_terminal",
  "anyhow",

Cargo.toml

@@ -12,7 +12,7 @@ publish = false
 alacritty_terminal = { version = "=0.26.0", default-features = false }
 anyhow = "1"
 dirs = "7"
-ely-gpui-component = { git = "https://git.zacharyzhang.com/ZacharyZhang-NY/Ely-GPUI-Components.git", rev = "0b4848bb2aadfc00f21eccdef94e306f8fbc61df" }
+ely-gpui-component = { git = "https://git.zacharyzhang.com/ZacharyZhang-NY/Ely-GPUI-Components.git", rev = "da3fdcaf39f2fa85ce1dd9cad07c3c81cf1dd721" }
 env_logger = "0.11"
 futures = "0.3"
 gethostname = "1.1.0"

tasks/acceptance.md

@@ -71,7 +71,7 @@ What no check reached: no real KWin drew the blur; of Wayland desktops, only Hyp
 | `ColumnShell` with three columns; blur when the setting is on | T11, T19 | `shot` names a `BlurredView` under the window | Pass |
 | Columns toggle and keep their state | T11, T23 | a click on each title bar button hid its column and saved it, and a restart opened the window with both hidden (147 columns against 87); Cmd-B with the app active; Ctrl-Shift-B on a real X11 window | Pass |
 | The window opens at the size it was left at; maximized or full screen, the size before stays; a kept size past the screen shrinks to it | T30 | `a_value_out_of_range_names_its_field`; on X11 under xfwm4: the first start opened at 1200 by 760 and wrote nothing; a resize to 900 by 600 was kept with one write; maximized by xfwm4's Alt+F10 the window spanned the 1400 by 900 screen while the file kept 900 by 600, and restored it was 900 by 600 again; maximized, minimized and restored, the file kept 900 by 600; resized to 950 by 650 and minimized at once, the file kept 900 by 600 while minimized and 950 by 650 once restored; the next start opened at 950 by 650 and wrote nothing; `WM_NORMAL_HINTS` names a 100 by 100 minimum, and a resize to 900 by 50 held at 900 by 100, kept so; a kept 3000 by 2000 opened at 1400 by 900, logged; on macOS, through gpui's own window: a kept 900 by 600 opened at 900 by 600, where a centered edge on a half point had grown it to 601, and a move wrote nothing; a resize to 923 by 617, covered by an opaque window within 150 ms and uncovered, was kept once shown, and the next start opened at 923 by 617; zoomed, minimized, restored, full screen and back, the file kept 923 by 617; a 100 by 100 window was kept; a kept 5000 by 4000 opened at the visible 1920 by 1113, logged; on Windows the owner dragged v0.1.2's window to a new size, closed it, and it opened again at that size; a mouse drag on macOS not yet shown | Pass |
-| The sessions and right columns resize by a drag on their border toward the terminal, 160 to 960 pixels, kept in settings | T33 | Ely `5c2822c` and `005faef`: `shell::tests::border`: a border toward the filling column drags its width, before it by its right and after it by its left; a drag stops at each limit; a drag in a header moves no window in Windows', macOS' and Linux's style (the test window panics on a move); a drag sets off from the width drawn, which holds Windows' caption buttons inside the window; a short shell squeezes both columns, and a drag moves each border the pointer's way from the width kept, a drag with no sideways move changing none (Ely `0b4848b`): on macOS 900 and 900 kept in a 1200 window drew 572 each, and a drag of 20 from the left border saved 920 and moved it right, where review round 1 saw it jump to 435; on X11 900 and 900 in a 1380 window, a drag of 40 saved 940 and moved both borders right, and a drag with no sideways move kept them; a resizing column with no border toward a filling one fails; `a_value_out_of_range_names_its_field` (`panel_width` 1000); on macOS under `shot`, the sessions border dragged in the header and the right border in the body moved 50 points each, saved 290 and 290 once, and the next start opened at them; on X11 under xfwm4: a drag in the body set 300, one on the right border in the header set 300 and left the window at 0,0, drags stopped at 960 and 160, the next start opened at 160, and both borders paint the theme's border color, #37384A, as before; the line had painted half a pixel on macOS and none on X11 until Ely `005faef`; no real drag on Windows yet | Partial |
+| The sessions and right columns resize by a drag on their border toward the terminal, 160 to 960 pixels, kept in settings | T33 | Ely `5c2822c` and `005faef`: `shell::tests::border`: a border toward the filling column drags its width, before it by its right and after it by its left; a drag stops at each limit; a drag in a header moves no window in Windows', macOS' and Linux's style (the test window panics on a move); a drag sets off from the width drawn, which holds Windows' caption buttons inside the window; a short shell squeezes both columns, and a drag moves each border the pointer's way from the width kept, a drag with no sideways move changing none (Ely `0b4848b`): on macOS 900 and 900 kept in a 1200 window drew 572 each, and a drag of 20 from the left border saved 920 and moved it right, where review round 1 saw it jump to 435; on X11 900 and 900 in a 1380 window, a drag of 40 saved 940 and moved both borders right, and a drag with no sideways move kept them; a drag out and back to where it set off gives the width it had (Ely `da3fdca`): on macOS each border dragged 50 out and back kept 240 and 240 and came back to its pixel, where review round 2 saw 290 kept, and on X11 both settled at 240 with nothing written; a resizing column with no border toward a filling one fails; `a_value_out_of_range_names_its_field` (`panel_width` 1000); on macOS under `shot`, the sessions border dragged in the header and the right border in the body moved 50 points each, saved 290 and 290 once, and the next start opened at them; on X11 under xfwm4: a drag in the body set 300, one on the right border in the header set 300 and left the window at 0,0, drags stopped at 960 and 160, the next start opened at 160, and both borders paint the theme's border color, #37384A, as before; the line had painted half a pixel on macOS and none on X11 until Ely `005faef`; no real drag on Windows yet | Partial |
 | The title shows the session's title, nothing else | T11 | log: "the title is", per session shown | Pass |
 | The pointer over the terminal is the arrow | T26 | the terminal sets no pointer, so gpui's arrow shows; on X11 with the pointer over the grid, gpui asked for no I-beam ("text"), which it had asked for, and failed to load under Xvfb, before | Pass |
 | The title bar is transparent | T11, T19 | T19 review | Pass |