Dock targets check the floating windows drawn this frame instead of every
window's last egui area rect. floating_layer says that an undrawn window
keeps its last area rect.
Arrow keys resize the handle right after a drag. Focus that came from
the pointer draws no highlight until a key is pressed, and hovering
still focuses nothing.
A left, right, top or bottom zone without anchor or side maps to
Placement::Edge, anchored on any docked panel that does not move. A
hidden panel is shown and moved in one step, all or nothing.
DockArea::hit_id gives the egui id of the control a Hit names, and
DockArea::floating_layer the layer of a floating window, so apps and
their tests stop rebuilding internal ids. The divider between stacked
groups has one id in docks and floating windows.
A panel body that reaches the bottom of its rect has no height of its
own, so a floated panel or group falls back to floating_size, else 320
points, instead of the whole frame height. A body in a window fitted to
its recorded height keeps that height. Panels leaving a frame fit their
content like panels leaving a dock.
Both are on in the Frame profile and off by default in the Dock profile;
DockStyle::wheel_selects_tabs and middle_click_closes_tabs set them. A
middle click closes only a closable panel.
Action::MovePanel moves one panel to a Target; NewDock and Float give it a group of its own.
DockCommand::Dock with a side that has no dock used to fail with InvalidPlacement for a panel
that shares its group.
- Permissions::accepts_splits; PROTECTED takes no side splits, so a
group dropped on a protected canvas floats.
- A press of any pointer button in a panel body, stripless panels
included, reports the panel in DockOutput::focused.
- Right to left, tab strips, their header and drag bar, insertion slots
(DropTarget::right_to_left), accordion headers and chrome::TitleBar
(ChromeStyle::right_to_left) mirror. TitleBar truncates galley titles
like tab labels.
- DockStyle::close_menu_items and close_button hide the built-in close
controls without changing Permissions::closable.
- Menu labels say what moves: Move Panel to Group (move_panel_to_label)
and Move Group to (move_group_to_label).
- The column bar's button has its own accessibility labels
(collapse_column_label, expand_column_label).
- Placement::for_zone maps zones onto what the anchor's container takes;
DockCommand uses it and takes right_to_left.
- Layout::apply, apply_with_permissions and apply_all return the closed
panels.
- Placement::Group takes an optional preferred height.
docs/ui-docking.md covers the Dock and Frame profiles, the model and
actions, Workspace, the renderer and DockContent, gestures, DockCommand,
DockStyle::localized, hit rects and the DockDriver test driver, and links
the task-pane guide.
Also: ui.dock open, close and activate map in one place, the command tests
build as a cfg(test) module, the hit-kind table gets a type alias, the
testing example uses public API, and rustfmt.
aiongg
skylar taylor-barrick