Module drag 

Constants

TEAROFF_MAX_DIM 🔒

TEAROFF_MIN_DIM 🔒

Sanity bounds for tear-off window dimensions. Frontend caps via window.outerWidth/Height (CSS/DIP) but a malformed or hostile arg should not be able to size the new window absurdly.

Functions

cancel_cross_drag

Cancel an active cross-window drag session.

complete_cross_drag

Complete a cross-window drag by committing the drop.

get_cursor_point

Get the current cursor position on screen.

get_mouse_button_state

Check whether the primary mouse button is currently pressed.

hit_test_windows 🔒

Hit-test all open browser windows to find which one contains the cursor.

open_window_at_position

Open a new window at a specific screen position (tear-off). Creates a new CEF browser window positioned so the cursor lands in the title bar.

pool_window_ready

Phase 6 — frontend signal that a pool window’s renderer is ready to receive pool:promote. Called from awaitPoolPromote AFTER the listener is installed. Only after this signal does the window enter the pool queue (otherwise emit_event_to_window would race the listener install and lose promote events).

release_drag_capture

Release mouse capture after an HTML5 drag ends outside the window.

restore_drag_cursor

Restore all system cursors to defaults.

set_drag_cursor

Replace the system no-drop cursor with a crosshair during drag.

set_js_drag_active

Signal that a JS-level drag is starting or ending (Linux GTK guard).

start_cross_drag

Start a cross-window drag session.

tear_off_pool_promote

Phase 6 — promote a pre-warmed pool window for tear-off. Returns the promoted window’s label, or an error string if the pool was empty (caller should fall back to open_window_at_position). Args: { workspaceId, screenX, screenY }.

tear_off_sc_move_handshake

Tear-off Phase 2 — the Win32 SC_MOVE handshake.

update_cross_drag

Update cross-window drag with current cursor position.

wait_for_browser_hwnd 🔒

Poll state.browsers for label until its host’s HWND is non-null or the deadline elapses. Returns the HWND as a raw pointer. Releases the browsers mutex between polls so on_after_created can register on the UI thread.