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feat(pan): interactive PAN mode with left-drag (no middle button needed)

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The PAN command/tool dispatched a command nobody handled, so it did
nothing. Combined with no middle mouse button on a trackpad/web client,
there was no way to pan at all (issue 164).

PAN (and the "P" alias) now enters a pan mode: a left-button drag pans the
view, reusing the existing middle-button pan path. Exit with Esc or by
starting another command. While active the crosshair is hidden and the
cursor becomes a hand (open when hovering, closed while dragging). PAN/P
are also added to command-line autocomplete.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Hakan Seven 2026-06-25 10:03:54 +03:00
commit 69ea050124
5 changed files with 67 additions and 2 deletions
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14
src/app/commands.rs
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@ -29,6 +29,9 @@ impl OpenCADStudio {
self.tabs[i].scene.clear_preview_wire();
self.tabs[i].active_cmd = None;
}
// Starting any command leaves interactive PAN mode (the PAN arm below
// re-enables it).
self.tabs[i].pan_mode = false;
// Reset the last committed point so the first click of the new command
// is not constrained by ortho/polar relative to a previous command's endpoint.
self.last_point = None;
@ -5148,6 +5151,14 @@ impl OpenCADStudio {
self.command_line.push_output("Display regenerated.");
}
// Interactive pan: left-drag pans the view until Esc. The only pan
// path when there is no middle mouse button (trackpad / web).
"PAN" | "P" => {
self.tabs[i].pan_mode = true;
self.command_line
.push_output("PAN: drag with the left mouse button. Press Esc to exit.");
}
// ── TABLE cell editing ─────────────────────────────────────────────
// TABLE CELL <row> <col> <text> — set text for a cell in the selected Table
cmd if cmd.starts_with("TABLE ") => {
@ -5972,7 +5983,8 @@ inventory::submit!(crate::command::CommandRegistration {
"LAYER", "LAYERS", "LAYISO", "LAYON", "LAYOUTMANAGER", "LAYOUTPANEL", "LAYOUTTAB", "LAYTHW",
"LAYUNISO", "LI", "LINETYPE", "LIST", "LTSCALE", "LWDISPLAY", "MASSPROP", "MLEADERSTYLE",
"MLSTYLE", "MS", "MSPACE", "NAVVCUBE", "NEW", "OBJIMPORT", "OPEN", "ORTHO",
"PAGESETUP", "PERF", "PERSP", "PLOT", "PLOTSTYLE", "PLOTSTYLEEDITOR", "PLOTSTYLEPANEL", "PR",
"P", "PAN", "PAGESETUP", "PERF", "PERSP", "PLOT", "PLOTSTYLE", "PLOTSTYLEEDITOR",
"PLOTSTYLEPANEL", "PR",
"PRINT", "PROPERTIES", "PROPS", "PSPACE", "PURGE", "QS", "QSAVE", "QSELECT",
"QUIT", "REDO", "REDRAW", "REDRWALL", "REGEN", "REGENALL", "RENAME", "REPORT",
"SA", "SAVE", "SAVEAS", "SCALETEXT", "SELECTALL", "SELECTSIMILAR", "SELSIM", "SHEETSET",