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bdc1d5878d
The text properties showed and edited the top-left corner of a text, whatever its alignment, and changing the alignment did not move the text. A right-aligned label next to a symbol therefore needed a different X for every text length to keep the same gap (#1155). Position X/Y is now the anchor point: the point of the text chosen by the alignment (right edge for "right", middle for "centre"...). Typing a position puts that point there, and changing the alignment moves the text so that the new anchor point is on the same X/Y. It is the same point that already stays fixed when the text changes. Applies to the element text properties on a folio and to the text field properties in the symbol editor. The saved x/y is still the top-left corner, so projects and symbols load and save unchanged and look the same; only the numbers shown for texts that are not top-left aligned change. The geometry is in textanchor.h, shared by DiagramTextItem and PartDynamicTextField, and tested in tst_textanchor. Not changed: static texts of the symbol editor (PartText), whose position is tied to the font baseline; texts inside a text group, which have no position or alignment of their own; rotation still pivots on the top-left corner (or the centre), not on the anchor. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
133 lines
3.9 KiB
C++
133 lines
3.9 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 DIAGRAM_TEXT_ITEM_H
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#define DIAGRAM_TEXT_ITEM_H
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#include <QGraphicsTextItem>
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#include <QFont>
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class Diagram;
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class QDomElement;
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class QDomDocument;
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/**
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This class represents a selectable, movable and editable text field on a
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diagram.
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@see QGraphicsItem::GraphicsItemFlags
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*/
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class DiagramTextItem : public QGraphicsTextItem
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{
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Q_OBJECT
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Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY colorChanged)
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Q_PROPERTY(Qt::Alignment alignment READ alignment WRITE setAlignment NOTIFY alignmentChanged)
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Q_PROPERTY(QPointF anchorPos READ anchorPos WRITE setAnchorPos)
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Q_PROPERTY(Qt::Alignment alignmentAtAnchor READ alignment WRITE setAlignmentAtAnchor NOTIFY alignmentChanged)
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Q_PROPERTY(QString plainText READ toPlainText WRITE setPlainText)
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Q_PROPERTY(QFont font READ font WRITE setFont NOTIFY fontChanged)
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signals:
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void colorChanged(QColor color);
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void alignmentChanged(Qt::Alignment alignment);
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void textEdited(const QString &old_str, const QString &new_str);
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void fontChanged(QFont font);
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public:
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DiagramTextItem(QGraphicsItem * = nullptr);
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DiagramTextItem(const QString &, QGraphicsItem * = nullptr);
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private:
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void build();
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public:
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enum { Type = UserType + 1004 };
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int type() const override { return Type; }
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Diagram *diagram() const;
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virtual void fromXml(const QDomElement &) = 0;
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virtual QDomElement toXml(QDomDocument &) const;
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void edit();
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QPointF mapMovementToScene (const QPointF &) const;
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QPointF mapMovementFromScene (const QPointF &) const;
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QPointF mapMovementToParent (const QPointF &) const;
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QPointF mapMovementFromParent (const QPointF &) const;
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void setFont(const QFont &font);
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void setColor(const QColor& color);
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QColor color() const;
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void setNoEditable(bool e = true) {m_no_editable = e;}
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void setAlignment(const Qt::Alignment &alignment);
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Qt::Alignment alignment() const;
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bool m_block_alignment = false;
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QPointF anchorPos() const;
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void setAnchorPos(const QPointF &anchor);
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void setAlignmentAtAnchor(const Qt::Alignment &alignment);
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QRectF frameRect() const;
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void setHtml(const QString &text);
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void setPlainText(const QString &text);
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bool isHtml() const;
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protected:
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void paint(QPainter *,
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const QStyleOptionGraphicsItem *,
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QWidget *) override;
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void focusInEvent(QFocusEvent *) override;
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void focusOutEvent(QFocusEvent *) override;
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void mouseDoubleClickEvent (QGraphicsSceneMouseEvent *event) override;
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void mousePressEvent (QGraphicsSceneMouseEvent *event) override;
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void mouseMoveEvent (QGraphicsSceneMouseEvent *event) override;
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void mouseReleaseEvent (QGraphicsSceneMouseEvent *event) override;
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void hoverEnterEvent(QGraphicsSceneHoverEvent *) override;
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void hoverLeaveEvent(QGraphicsSceneHoverEvent *) override;
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void hoverMoveEvent(QGraphicsSceneHoverEvent *) override;
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virtual void applyRotation(const qreal &);
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void prepareAlignment();
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void finishAlignment();
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protected:
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bool
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m_mouse_hover = false,
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m_first_move = true,
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m_no_editable,
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m_is_html = false,
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m_non_left_alignment = false;
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QString
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m_previous_html_text,
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m_previous_text;
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QPointF m_mouse_to_origin_movement;
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private:
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QRectF m_alignment_rect;
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Qt::Alignment m_alignment = (Qt::AlignTop | Qt::AlignLeft);
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};
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#endif
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