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With "one text per potential", deleting the wire that carries the text moves it to another wire of the potential, but only if the text isVisible(). While wire texts were hidden by View > Show none was, so the text was never moved and the potential came back with no text. ShownKinds::wantsVisible() also counts a text hidden only by its kind. Also drop the always-true/false enum range checks clang warned about. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
78 lines
2.6 KiB
C++
78 lines
2.6 KiB
C++
/*
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Copyright 2006-2026 The QElectroTech Team
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This file is part of QElectroTech.
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QElectroTech is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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QElectroTech is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with QElectroTech. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef SHOWNKINDS_H
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#define SHOWNKINDS_H
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class QGraphicsItem;
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class QGraphicsScene;
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/**
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Show or hide whole kinds of folio items, View > Show (bugtracker #301):
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symbol texts, wire numbers, free texts and so on.
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Each item says which kind it is with a tag set by its constructor, so an
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item created while its kind is hidden starts hidden, whichever way it was
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created (load, paste, a text added to a symbol, a new cross-reference).
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A tag and not type(): the cross-reference under a contact's label is a
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plain QGraphicsTextItem.
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Some items also hide themselves (a wire number switched off, one text
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per potential, a cross-reference snapped elsewhere). They call
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setVisible() here instead of QGraphicsItem::setVisible(), and the kind
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state can only veto what they ask for: showing a kind again brings back
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only what was hidden for it, never what an item hid itself.
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The state is for the whole application and is not saved: it is a way of
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looking at the folios, like the grid. Hidden items are left out of
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printing and exports, and Qt does not select them, so nothing hidden is
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copied, moved or deleted by accident.
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This part knows nothing of Diagram, so it can be tested on a plain scene.
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*/
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namespace ShownKinds
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{
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enum Kind {
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SymbolTexts,
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WireNumbers,
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FreeTexts,
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Shapes,
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Pictures,
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Tables,
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CrossReferences,
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KindCount
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};
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/// QGraphicsItem::data() key holding an item's kind.
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inline constexpr int data_key = 0x4b4e44; // "KND"
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/// QGraphicsItem::data() key set while an item that wants to be
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/// visible is hidden only because its kind is hidden.
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inline constexpr int hidden_key = 0x4b4e48; // "KNH"
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bool isShown(Kind kind);
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void setShown(Kind kind, bool shown);
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int hiddenCount();
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void tag(QGraphicsItem *item, Kind kind);
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void setVisible(QGraphicsItem *item, bool visible);
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bool isHidden(const QGraphicsItem *item);
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bool wantsVisible(const QGraphicsItem *item);
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void apply(QGraphicsScene *scene, Kind kind);
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}
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#endif // SHOWNKINDS_H
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