qelectrotech-source-mirror/sources/editor/graphicspart/parttext.h

/*
	Copyright 2006-2026 The QElectroTech Team
	This file is part of QElectroTech.
	
	QElectroTech is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 2 of the License, or
	(at your option) any later version.
	
	QElectroTech is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.
	
	You should have received a copy of the GNU General Public License
	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef PART_TEXT_H
#define PART_TEXT_H
#include "../../qetapp.h"
#include "customelementpart.h"

#include <QtWidgets>

class TextEditor;
class ElementPrimitiveDecorator;
/**
	This class represents an static text primitive which may be used to compose
	the drawing of an electrical element within the element editor.
*/
class PartText : public QGraphicsTextItem, public CustomElementPart {
	Q_OBJECT
	Q_PROPERTY(qreal real_size READ realSize WRITE setRealSize)
	Q_PROPERTY(QColor color READ defaultTextColor WRITE setDefaultTextColor NOTIFY colorChanged)
	Q_PROPERTY(QString text READ toPlainText WRITE setPlainText NOTIFY plainTextChanged)
	Q_PROPERTY(QFont font READ font WRITE setFont NOTIFY fontChanged)
	Q_PROPERTY(Qt::Alignment alignment READ alignment WRITE setAlignment NOTIFY alignmentChanged)

	signals:
		void fontChanged(const QFont &font);
		void colorChanged(const QColor &color);
		void plainTextChanged(const QString &text);
		void alignmentChanged(Qt::Alignment alignment);

		// constructors, destructor
	public:
		PartText(QETElementEditor *, QGraphicsItem * = nullptr);
		~PartText() override;

	private:
		PartText(const PartText &);

		// methods
	public:
		enum { Type = UserType + 1107 };
		/**
			Enable the use of qgraphicsitem_cast to safely cast a QGraphicsItem into a
			PartText.
			@return the QGraphicsItem type
		*/
		int type() const override { return Type; }
		QString name() const override { return(QObject::tr("texte", "element part name")); }
		QString xmlName() const override { return(QString("text")); }
		void fromXml(const QDomElement &) override;
		const QDomElement toXml(QDomDocument &) const override;
		void setRotation(qreal angle);
		void mirror();
		void flip();
		bool isUseless() const override;
		QRectF sceneGeometricRect() const override;
		void startUserTransformation(const QRectF &) override;
		void handleUserTransformation(const QRectF &, const QRectF &) override;

		void setProperty(const char *name, const QVariant &value) override {QGraphicsTextItem::setProperty(name, value);}
		QVariant property(const char *name) const override {return QGraphicsTextItem::property(name);}

		qreal realSize() const {return real_font_size_;}
		void setRealSize(qreal rs) {real_font_size_ = rs;}
		void setDefaultTextColor(const QColor &color);
		void setPlainText(const QString &text);
		void setFont(const QFont &font);
		void setAlignment(const Qt::Alignment &alignment);
		Qt::Alignment alignment() const {return m_alignment;}

	public slots:
		void adjustItemPosition(int = 0);
		void setEditable(bool);
		void startEdition();
		void endEdition();

	protected:
		void mouseMoveEvent(QGraphicsSceneMouseEvent *event) override;
		void mousePressEvent(QGraphicsSceneMouseEvent *event) override;
		void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) override;
		void focusInEvent(QFocusEvent *) override;
		void focusOutEvent(QFocusEvent *) override;
		void keyPressEvent(QKeyEvent *) override;
		void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *) override;
		QVariant itemChange(GraphicsItemChange, const QVariant &) override;
		QRectF boundingRect() const override;

	private:
		QPointF margin() const;
		void applyLineAlignment();
		void prepareAlignment();
		void finishAlignment();
		QString previous_text;
		qreal real_font_size_;
		QPointF saved_point_;
		qreal saved_font_size_;
		QGraphicsItem *decorator_;
		QPointF m_origin_pos;
		Qt::Alignment m_alignment = (Qt::AlignTop | Qt::AlignLeft);
		QRectF m_alignment_rect;
};
#endif