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Author SHA1 Message Date
Rodrigo FaselliandIan Bassi 303d7a1a07 Option: Focus Mode (Show/ Hide inactive plates) (#16325)
* Option: Show/ Hide inactive plates

* Hide inactive plate volumes by bounds

Switch inactive-plate volume hiding to use geometric overlap with the current plate bounding box instead of object and wipe tower ID mapping. This also guards against a missing current plate and keeps any active volume visible when its transformed bounds overlap the current plate footprint.

* Hide inactive plates per instance and keep them unpickable

Decide what is shown per object instance, from its footprint over the
current plate, so the parts of an object are never split; a selected
instance stays visible.

Keep the hidden state between frames instead of restoring it after each
one. GLVolume::on_hidden_plate records what this update hid, so it only
shows that again and leaves the volumes gizmos hide alone, and the raycasts
made while handling the mouse see the same scene as the frame. Nothing runs
while the inactive plates are shown.

Deactivate the raycasters of the other plates, whose icons still took
clicks where nothing was drawn, move the axes to the current plate, and
limit the option to Prepare, as Preview already shows the current plate
alone.

* Follow the selected plate with the camera while the others are hidden

Selecting a plate in Prepare while the inactive plates are hidden moves
the camera target over it and keeps the angle, distance and height, so
the plate comes into view where the previous one was. A zoom to all
plates, as after loading a project or adding a plate, frames the current
plate instead.

* Add a compact plate switcher while inactive plates are hidden

The hidden plates can no longer be clicked, and the object list gets
crowded on large projects. While they are hidden in Prepare, a column of
numbered buttons in the top left corner, a compact counterpart of the
Preview plate toolbar, selects the plate to show. It highlights the
current plate, dims the empty ones and gives the plate name in the
tooltip.

* Simplify the inactive plates update and the plate switcher layout

Decide and apply each volume's state in one pass instead of filling a
per-volume vector first, and hoist the switcher's loop-invariant colors.
Keep the height the bottom-left corner takes next to the constants it is
made of, with the canvas toolbar's button spacing named, rather than
repeating that layout in the switcher.

* Rename the option to Focus mode

The canvas menu entry reads Focus mode, lit while the other plates are
hidden, and is off by default, so nothing changes until it is turned on.
The app config key is focus_mode. Turning it on zooms to the current
plate, so the plate fills the view.

* Show plate thumbnails in the plate switcher

The switcher shows the thumbnails of the Preview plate toolbar instead of
numbered buttons, with rounded corners concentric with the window's.
Plater::plate_toolbar_image_version() lets it refresh them without
clearing the Preview toolbar's dirty flag.

* Don't draw the sinking contours of inactive volumes

GLVolume::render() skips an inactive volume, but its sinking contour was
still drawn, so an object on a hidden plate left its outline behind.

* Show the plate switcher's scrollbar only on hover, as in Preview

The plate switcher now shares the Preview plate toolbar's scrollbar: the
same width and colors, shown only while the mouse is over the column or
drags the bar, with the mouse wheel scrolling it either way, and tighter
window corners while it shows. Both toolbars draw it through the same
helpers, so they cannot drift apart; the Preview toolbar behaves as before.

Drop the frame style the switcher no longer uses since it draws
thumbnails instead of buttons.

* Make the plate switcher's thumbnails cheaper and match the Preview toolbar

The thumbnail version moves after almost every edit, and the switcher
redrew both thumbnails of every plate each time. It now redraws only the
current plate's, the only one edited while the others are hidden, and the
other plates' once their thumbnails are invalidated, through the new
Plater::update_plate_thumbnails().

IMToolbarItem::set_thumbnail() uploads a plate thumbnail without keeping
a copy of its pixels, a megabyte per plate, and replaces the item setup
the Preview toolbar and the switcher each repeated. The switcher's hover
border takes the Preview toolbar's color.

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Co-authored-by: Ian Bassi <ian.bassi@outlook.com>
2026-10-14 14:23:41 -03:00