Element::editProperty() gave PropertiesEditorDialog no size of its own,
so the dialog fell back to its sizeHint, which is sized for the compact
general-purpose editors it usually hosts. A PLC master instead shows a
six-column IO table that grows horizontally, and the dialog came out
too narrow to read those columns in.
For a master whose type is PLC, resize the dialog to three times its
natural width before exec(), keeping the natural height. The width is
clamped to the available screen so it cannot run off the display, and
every other element type opens exactly as before.
Reviving #659, closed 2026-09-10 purely to clear a review backlog
(#630), not on merit. Rebuilt fresh against current master rather than
merged from the old branch (elementspanelwidget.cpp had drifted enough
that a textual merge risked silently losing content, as it did earlier
in this same session for a different revival). Builds discussion #607.
Cutting/copying a linked group of elements -- a relay coil with its
contacts, a PLC master with its slave I/O elements -- dropped the
master/slave link entirely. Traced end to end: Element::toXml() writes
each partner's uuid into <link_uuid>, Element::fromXml() reads it back
into a deferred, unresolved buffer (tmp_uuids_link), and the only code
that ever resolves that buffer is initLink(QETProject *) -- called
only from Diagram::refreshContents(), itself only called from full
project load and macro-block insertion. Neither DiagramView::paste()
nor ElementsPanelWidget::duplicateDiagram() ever call it, so
tmp_uuids_link is populated correctly and never resolved: the link is
silently dropped. duplicateDiagram() already knew this and worked
around it by calling clearPendingLinks() -- correct to not link back
to a stale source, but it meant folio duplication never preserved a
link either.
Added Element::initLink(const QList<Element *> &candidates) --
resolves against a caller-supplied list instead of a project-wide
search. The scoping is the subtle part: right after the XML round-trip
and before uuids are renewed, a pasted/duplicated element's
tmp_uuids_link still holds its source's original partner uuid, which
at that exact moment still equals the not-yet-renewed uuid of that
partner's own copy, if it was carried along in the same batch.
Resolving only within the batch is what stops a linked pair pasted
together from matching an original element left elsewhere that
happens to still carry that same soon-to-be-replaced uuid. If only one
half of a linked group is in the batch, its entry finds no match and
is dropped -- the same "leave it unlinked" outcome as before.
Wired into PasteDiagramCommand::redo(), before the existing newUuid()
loop and gated by the same first_redo flag. Wired into
duplicateDiagram() the same way, replacing its clearPendingLinks()
call (initLink() clears tmp_uuids_link internally, matched or not).
Verified live -- the original PR's own test plan left both of these
unchecked, so this closes that gap rather than repeating it. Built a
project with a linked PLC master/slave pair (qet-mcp's link_elements),
then drove the real interaction under Xvfb:
Ctrl+A, Ctrl+C, Ctrl+V:
originals 95ad58fc <-> e728632c (unchanged)
pasted 513e6bf8 <-> 29aa60b4 (linked to each other)
Right-click folio > "Copier et coller":
originals 95ad58fc <-> e728632c (unchanged)
duplicated 0a33ccb4 <-> 3264fe66 (linked to each other)
Neither copy links back to an original or comes in unlinked. Qt 6.10.2,
ctest 13/13.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Two bugs reported by @arummler on #591 after merge:
"It works but to select the text field one has to right click on
it...I think there are competing handlers or something."
"the drag elements should be on the border of the box. In the
moment they appear directly left and right from the text."
Both reproduced headlessly (scripts/qet-gui-dialog.sh) against a fresh
build of current master and root-caused before touching anything.
Selection: DynamicElementTextItem::mousePressEvent() forwards a plain
click (no Shift) straight to parentElement()->mousePressEvent(), by
design and pre-existing -- it's what lets dragging a symbol by its own
label move the whole symbol rather than just the label. That's correct
and untouched here. But it means a plain click leaves the *parent*
selected, not the text, and #591's handles were wired only to the
text's own ItemSelectedHasChanged -- so they were only reachable via
Shift+click or a right-click's context menu (which happens to select
the item under the cursor for its own context menu, unrelated to the
Shift path), neither of which anyone reaches for to resize a text.
Confirmed with screenshots at each step, including that Shift+click
already reached the existing (if misplaced) handles correctly.
Fix: DynamicElementTextItem::refreshResizeHandlesVisibility() shows the
handles when either the text itself or its parent element is selected,
and Element gets an itemChange() override (it had none) that calls it
on each of its own texts when the element's own selection changes. Both
sides driven from itemChange(), Qt's own hook for exactly this and the
same one already used for the text's own selection.
First attempt drove this from paint() instead, since the PR's own
updateResizeHandlesPos() already runs there. That crashed reproducibly
(SIGABRT) on deselecting a text: paint() runs while QGraphicsScene
iterates its item list to draw it, and addResizeHandles()/
removeResizeHandles() mutate that list via QGraphicsScene::addItem()/
removeItem(), which cannot safely happen mid-iteration. Caught it with
the same headless repro before it went anywhere near a PR, moved the
logic to itemChange(), and re-ran the full sequence -- select, resize,
undo, deselect, twice through -- clean.
Position: updateResizeHandlesPos() placed the handles on frameRect(),
which is a box sized to the text's natural (idealWidth()) content and
then re-centred inside boundingRect() -- it does not grow with
textWidth(). Once a text has been widened, frameRect() stays tight
around the glyphs while boundingRect() -- the box QGraphicsView actually
outlines as the selection, and the box a user drags relative to -- grows
around it, leaving the handles stranded well inside the visible
selection border. Fix: position them on boundingRect() instead, which
does track textWidth(); confirmed by widening a text and checking the
handle lands exactly on the new edge rather than partway across it.
Verified headlessly end to end on the original report's own element
("motor off" on grafcet.qet, folio 1): a single plain left-click (no
Shift, no right-click) now shows both handles at the true box border;
dragging resizes correctly and the handle tracks the growing edge;
Ctrl+Z restores the -1 auto-width sentinel and the handles stay at the
reverted position; clicking away removes them; repeated twice with no
crash. Qt 6.10.2, ctest 12/12, no new warnings in either changed file.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
- Element::reloadPicture() now returns a ReloadPictureResult and never
clears the current drawing before a successful rebuild: a missing or
unreadable definition leaves the element as it was instead of blank.
- Elements whose size, hotspot or terminals (added, removed or moved)
differ from the new definition are not redrawn: the new drawing would
no longer match their bounding rect and live terminals.
- The action lists those elements and warns that they must be removed
and re-inserted, which deletes the conductors already connected to
them.
- Status tip states the action is not undoable.
A placed element is drawn once from its definition at construction --
buildFromXml() only turns terminal/input/dynamic_text tags into live
child objects, every other primitive (line, rect, ellipse, polygon,
arc, text) is pre-rendered into a QPicture by ElementPictureFactory,
cached forever under the element's uuid with no invalidation path
anywhere in the codebase. Edit and save a symbol's drawing and every
already-placed instance keeps showing the old one until the project
is closed and reopened.
Fix, scoped to what is safe to do without ever risking a conductor or
a dynamic text's per-instance state:
- ElementPictureFactory::dropCache(location) forgets the cached
drawing for one location, so the next fetch rebuilds it from the
definition's current content.
- Element::reloadPicture() re-fetches and repaints one instance.
- Projet > "Recharger les dessins des éléments": walks every diagram,
drops each distinct location's cache once, then reloads every placed
instance.
Deliberately does not touch terminals or dynamic texts -- a definition
whose terminal positions moved still needs the existing remove-and-
reinsert workflow, since terminals are what conductors are attached to
and a wrong guess there would silently misconnect wires.
Verified: build clean, ctest 6/6. Triggered the new action on a real,
densely-wired project (76 elements) via exact keyboard-menu navigation
cross-checked against the menu's own addAction order -- ran to
completion, correct confirmation dialog, no crash, diagram unchanged
and uncorrupted afterward. Could not complete a live edit-and-watch-
it-update trace: opening the element editor on a selected item via
GUI automation was unreliable in this environment (same class of
friction as PR #888), and this sandbox has no file-based (common://)
element to mutate on disk as a shortcut -- every example project
embeds its elements. The mechanism itself is traced correct:
ElementsLocation::xml() for an embed:// location reads the project's
live in-memory collection DOM on every call, so a dropped cache
rebuilds from whatever was most recently saved.
Refs #802 (own analysis comment, 2026-08-31).
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Elements already inherited QetGraphicsItem::isMovable()/setMovable() --
the same mechanism images and drawn shapes use for their "lock position"
checkbox -- but nothing exposed it in the element properties panel, and
Element::toXml()/fromXml() never persisted it.
- ElementPropertiesWidget::generalWidget(): add a "Verrouiller la
position" checkbox mirroring ShapeGraphicsItemPropertiesWidget's
m_lock_pos_cb, toggling the element's inherited setMovable().
- Element::toXml()/fromXml(): persist is_movable, same attribute name
and default-true behavior as DiagramImageItem/QetShapeItem.
Verified via headless --resave round-trip: is_movable="0" survives
load -> save unchanged, existing elements without the attribute default
to movable.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HdWpDp3TrPKbHnv7YUcNJj
QString::toDouble() reports a successful conversion for "nan"/"inf"/
"-inf" -- confirmed directly -- so the existing conv_ok checks in
Element::valideXml() and Terminal::valideXml() never caught a
non-finite x/y. A NaN-positioned element reaching the scene can hang
QGraphicsScene::addItem() forever: an existing conductor's itemChange()
runs a collision test (calculateTextItemPosition() ->
QGraphicsItem::collidesWithPath()) whose underlying QPathClipper spins
without terminating when fed a NaN-valued QPainterPath, since NaN
breaks the ordering comparisons the clipping algorithm's termination
depends on (#781). Short of that, a non-finite value that doesn't
happen to trigger a collision test simply gets written straight back
out on save with nothing to stop it (#782).
Element::valideXml() and Terminal::valideXml() now also check
qIsFinite() on the parsed x/y, rejecting the whole item the same way a
missing attribute already does. DynamicElementTextItem::fromXml() has
no such reject-the-item gate (void return, no caller check), so its x/y
are clamped to 0 instead -- the same fallback the attribute lookup
already uses when x/y is missing entirely.
Verified against both original findings' exact repro steps:
- #781: Habitat-Unifilaire.qet with x="nan" on one element -- hung
(SIGTERM'd by a 25s timeout) on an unfixed build, resaves cleanly
(exit 0) on this one.
- #782: grafcet.qet with y="nan" on a dynamic_elmt_text -- the value
passed straight through to the resaved file on an unfixed build;
clamped to 0 on this one. The specific field is now stable (y="0" on
two consecutive resaves) where it read "nan" both times before.
(grafcet.qet has an unrelated, already-known, unmerged fix
(PR #779) for element/terminal-order non-determinism, so a whole-file
diff across resaves still differs for reasons unconnected to this
change -- checked the specific once-NaN field in isolation instead.)
- Also checked -inf on affuteuse_250h.qet: same rejection, same result.
Full qet-dbcheck.py sweep of the unmutated example corpus (23
projects), 0 regressions.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Placing an auto-numbered element or conductor advances a shared
NumerotationContext counter (QETProject::addConductorAutoNum/
addElementAutoNum) as a side effect that sat entirely outside the undo
stack. Undoing the placement removed the visible number but left the
counter advanced, so every undo of an auto-numbered placement silently
burned a number, with no way to get it back short of a manual reset.
Adds SetAutoNumContextCommand, a small QUndoCommand storing the old/new
NumerotationContext and calling the matching add*AutoNum() setter on
undo()/redo() -- the same shape QPropertyUndoCommand already uses next
to it in ConductorAutoNumerotation::applyText().
Wires it into the two conductor call sites (the static newProperties(),
and numerateNewConductor(), both in ConductorAutoNumerotation) and the
element call site (Element::setUpFormula(), called from
DiagramEventAddElement::addElement() when a new element is dropped onto
a diagram). setUpFormula() now takes an optional parent QUndoCommand;
addElement() calls it before pushing its own undo_object so the counter
change lands in the same undo macro as the element's placement -- one
Ctrl+Z reverts both together, instead of leaving the counter adrift.
The project-properties config dialog's own add*AutoNum() calls (editing
the numbering rule itself, not a side effect of placing something) are
deliberately left untouched, as are the load-time folio-sequential
bookkeeping calls in Diagram::loadElmtFolioSeq()/loadCndFolioSeq() and
the bulk folio-renumbering passes in QETProject -- none of those run as
part of an undoable user gesture.
Implements the scope proposed in discussion #608.
clazy is a compiler plugin which allows clang to understand Qt
semantics. You get more than 50 Qt related compiler warnings, ranging
from unneeded memory allocations to misusage of API, including fix-its
for automatic refactoring.
https://invent.kde.org/sdk/clazy
In the diagram editor, when we edit the element information in the side
panel, each time we tip something in the text field the cursor always go
to the end if the "label" information is empty.
* terminal_strip:
User can edit the label of terminal inside the terminal strip editor
Code refactoring
Double click on Xref cell show the terminal in the diagram
terminal function can be edited, edted value is applied to element
Table widget : led and type is editable
Minor gui change
Remove position section of terminalStripModel
If an element are overwrite by a modified element and the terminals of
the modified element are moved, the old element is not loaded because
some terminal are not found.
This commit remove the checking of not found terminal because it's
useless now.
Laurent Trinques