Reapply "Add cable management: drawing, cores, numbering, cross-references and cable list"

This reverts commit 2bb3343d2d.

sources/cable/cabletextformatdialog.h

@@ -0,0 +1,83 @@
+/*
+	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 CABLETEXTFORMATDIALOG_H
+#define CABLETEXTFORMATDIALOG_H
+
+#include "cable.h"
+
+#include <QDialog>
+
+class QComboBox;
+class QFontComboBox;
+class QDoubleSpinBox;
+class QLabel;
+class QPushButton;
+
+/**
+	@brief The small window where one text of one cable is set: the font
+	it is written with -- family, size and style -- and, for the texts
+	written next to the trunk line, the way it lines up at the line.
+
+	The colours of the cores come here as well, all of them together
+	because they are drawn together: they have no alignment, being
+	turned by a quarter along their own line.
+
+	Saying nothing is the normal case: the cable then follows what the
+	preferences offer on the "Textes" page, and OK keeps an answer of
+	its own only when he really changed something -- so that picking
+	another default later on still reaches this cable.
+*/
+class CableTextFormatDialog : public QDialog
+{
+		Q_OBJECT
+
+	public:
+		/**
+			@param format what this cable writes that text with right
+			now, an empty format when it merely follows the preferences
+			@param cores true for the colours of the cores: they have
+			no alignment and follow QETApp::cableCoreFont()
+			@param parent
+		*/
+		CableTextFormatDialog(const CableTextFormat &format,
+							  bool cores,
+							  QWidget *parent = nullptr);
+
+			///What the cable is to write that text with from now on
+		CableTextFormat format() const;
+
+	private:
+		void buildUi();
+		void updatePreview();
+		QFont chosenFont() const;
+
+		bool m_cores = false;
+			///True when he asked to go back to following the preferences
+		bool m_reset_chosen = false;
+			///The alignment this text has right now, 0 for the cores
+		int m_initial_alignment = int(Qt::AlignRight);
+
+		QFontComboBox *m_family = nullptr;
+		QDoubleSpinBox *m_size = nullptr;
+		QComboBox *m_style = nullptr;
+		QComboBox *m_alignment = nullptr;
+		QLabel *m_preview = nullptr;
+		QPushButton *m_reset = nullptr;
+};
+
+#endif // CABLETEXTFORMATDIALOG_H