Initial commit.

document.h

@@ -0,0 +1,177 @@
+/*
+ * Copyright (C) 2020 Gavin MacGregor
+ *
+ * This file is part of QTeletextMaker.
+ *
+ * QTeletextMaker 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * QTeletextMaker 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 QTeletextMaker.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef DOCUMENT_H
+#define DOCUMENT_H
+
+#include <QFile>
+#include <QObject>
+#include <QTextStream>
+#include <QUndoCommand>
+#include <QUndoStack>
+#include <vector>
+#include "document.h"
+#include "page.h"
+
+class TeletextDocument : public QObject
+{
+	Q_OBJECT
+
+public:
+	TeletextDocument();
+	~TeletextDocument();
+	bool isEmpty() const { return m_empty; }
+	void setModified(bool);
+	void loadDocument(QFile *);
+	void saveDocument(QTextStream *);
+	int numberOfSubPages() const { return m_subPages.size(); }
+	TeletextPage* currentSubPage() const { return m_subPages[m_currentSubPageIndex]; }
+	int currentSubPageIndex() const { return m_currentSubPageIndex; }
+	void selectSubPageIndex(int, bool=false);
+	void selectSubPageNext();
+	void selectSubPagePrevious();
+	void insertSubPage(int, bool);
+	void deleteSubPage(int);
+	int pageNumber() const { return m_pageNumber; }
+	void setPageNumber(QString);
+	QString description() const { return m_description; }
+	void setDescription(QString);
+	int fastTextLink(int linkNumber) const { return m_fastTextLink[linkNumber]; }
+	void setFastTextLink(int, QString);
+	QUndoStack *undoStack() const { return m_undoStack; }
+	int cursorRow() const { return m_cursorRow; }
+	int cursorColumn() const { return m_cursorColumn; }
+	void cursorUp();
+	void cursorDown();
+	void cursorLeft();
+	void cursorRight();
+	void moveCursor(int, int);
+
+signals:
+	void cursorMoved();
+	void colourChanged(int);
+	void contentsChange(int);
+	void aboutToChangeSubPage();
+	void subPageSelected();
+	void refreshNeeded();
+
+private:
+	QString m_description;
+	bool m_empty;
+	int m_pageNumber, m_currentSubPageIndex;
+	int m_fastTextLink[6];
+	std::vector<TeletextPage *> m_subPages;
+	QUndoStack *m_undoStack;
+	int m_cursorRow, m_cursorColumn;
+};
+
+
+class OverwriteCharacterCommand : public QUndoCommand
+{
+public:
+//	enum { Id = 1 };
+
+	OverwriteCharacterCommand(TeletextDocument *, unsigned char, QUndoCommand *parent = 0);
+
+	void undo() override;
+	void redo() override;
+//	int id() const override { return Id; }
+
+private:
+	TeletextDocument *m_teletextDocument;
+	unsigned char m_oldCharacter, m_newCharacter;
+	int m_subPageIndex, m_row, m_column;
+};
+
+class ToggleMosaicBitCommand : public QUndoCommand
+{
+public:
+	enum { Id = 2 };
+
+	ToggleMosaicBitCommand(TeletextDocument *, unsigned char, QUndoCommand *parent = 0);
+
+	void undo() override;
+	void redo() override;
+	bool mergeWith(const QUndoCommand *) override;
+	int id() const override { return Id; }
+
+private:
+	TeletextDocument *m_teletextDocument;
+	unsigned char m_oldCharacter, m_newCharacter;
+	int m_subPageIndex, m_row, m_column;
+};
+
+class BackspaceCommand : public QUndoCommand
+{
+public:
+//	enum { Id = 3 };
+
+	BackspaceCommand(TeletextDocument *, QUndoCommand *parent = 0);
+
+	void undo() override;
+	void redo() override;
+//	int id() const override { return Id; }
+
+private:
+	TeletextDocument *m_teletextDocument;
+	unsigned char m_deletedCharacter;
+	int m_subPageIndex, m_row, m_column;
+};
+
+class InsertSubPageCommand : public QUndoCommand
+{
+public:
+	InsertSubPageCommand(TeletextDocument *, bool, bool, QUndoCommand *parent = 0);
+
+	void undo() override;
+	void redo() override;
+
+private:
+	TeletextDocument *m_teletextDocument;
+	int m_newSubPageIndex;
+	bool m_copySubPage;
+};
+
+class SetColourCommand : public QUndoCommand
+{
+public:
+	SetColourCommand(TeletextDocument *, int, int, QUndoCommand *parent = 0);
+
+	void undo() override;
+	void redo() override;
+
+private:
+	TeletextDocument *m_teletextDocument;
+	int m_subPageIndex, m_colourIndex, m_oldColour, m_newColour;
+};
+
+class ResetCLUTCommand : public QUndoCommand
+{
+public:
+	ResetCLUTCommand(TeletextDocument *, int, QUndoCommand *parent = 0);
+
+	void undo() override;
+	void redo() override;
+
+private:
+	TeletextDocument *m_teletextDocument;
+	int m_subPageIndex, m_colourTable;
+	int m_oldColourEntry[8];
+};
+#endif