TextDocumentHandler to deal with HTML formatting

1 files changed, 121 insertions, 0 deletions

diff --git a/framework/src/domain/textdocumenthandler.h b/framework/src/domain/textdocumenthandler.h
new file mode 100644
index 00000000..b8ae5bdb
--- /dev/null
+++ b/framework/src/domain/textdocumenthandler.h
@@ -0,0 +1,121 @@
+/*
+    Copyright (c) 2017 Christian Mollekopf <mollekopf@kolabsystems.com>
+
+    This library is free software; you can redistribute it and/or modify it
+    under the terms of the GNU Library General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or (at your
+    option) any later version.
+
+    This library 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 Library General Public
+    License for more details.
+
+    You should have received a copy of the GNU Library General Public License
+    along with this library; see the file COPYING.LIB.  If not, write to the
+    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+    02110-1301, USA.
+*/
+#pragma once
+
+#include <QObject>
+#include <QFont>
+#include <QTextCursor>
+
+class QTextDocument;
+class QQuickTextDocument;
+
+class TextDocumentHandler : public QObject
+{
+    Q_OBJECT
+
+    Q_PROPERTY(QQuickTextDocument *document READ document WRITE setDocument NOTIFY documentChanged)
+    Q_PROPERTY(int cursorPosition READ cursorPosition WRITE setCursorPosition NOTIFY cursorPositionChanged)
+    Q_PROPERTY(int selectionStart READ selectionStart WRITE setSelectionStart NOTIFY selectionStartChanged)
+    Q_PROPERTY(int selectionEnd READ selectionEnd WRITE setSelectionEnd NOTIFY selectionEndChanged)
+
+    Q_PROPERTY(QColor textColor READ textColor WRITE setTextColor NOTIFY textColorChanged)
+    Q_PROPERTY(QString fontFamily READ fontFamily WRITE setFontFamily NOTIFY fontFamilyChanged)
+    Q_PROPERTY(Qt::Alignment alignment READ alignment WRITE setAlignment NOTIFY alignmentChanged)
+
+    Q_PROPERTY(bool bold READ bold WRITE setBold NOTIFY boldChanged)
+    Q_PROPERTY(bool italic READ italic WRITE setItalic NOTIFY italicChanged)
+    Q_PROPERTY(bool underline READ underline WRITE setUnderline NOTIFY underlineChanged)
+
+    Q_PROPERTY(int fontSize READ fontSize WRITE setFontSize NOTIFY fontSizeChanged)
+
+    Q_PROPERTY(QString plainText READ plainText NOTIFY textChanged)
+    Q_PROPERTY(QString htmlText READ htmlText NOTIFY textChanged)
+
+public:
+    explicit TextDocumentHandler(QObject *parent = nullptr);
+
+    QQuickTextDocument *document() const;
+    void setDocument(QQuickTextDocument *document);
+
+    QString plainText() const;
+    QString htmlText() const;
+
+    int cursorPosition() const;
+    void setCursorPosition(int position);
+
+    int selectionStart() const;
+    void setSelectionStart(int position);
+
+    int selectionEnd() const;
+    void setSelectionEnd(int position);
+
+    QString fontFamily() const;
+    void setFontFamily(const QString &family);
+
+    QColor textColor() const;
+    void setTextColor(const QColor &color);
+
+    Qt::Alignment alignment() const;
+    void setAlignment(Qt::Alignment alignment);
+
+    bool bold() const;
+    void setBold(bool bold);
+
+    bool italic() const;
+    void setItalic(bool italic);
+
+    bool underline() const;
+    void setUnderline(bool underline);
+
+    int fontSize() const;
+    void setFontSize(int size);
+
+Q_SIGNALS:
+    void documentChanged();
+    void cursorPositionChanged();
+    void selectionStartChanged();
+    void selectionEndChanged();
+
+    void fontFamilyChanged();
+    void textColorChanged();
+    void alignmentChanged();
+
+    void boldChanged();
+    void italicChanged();
+    void underlineChanged();
+
+    void fontSizeChanged();
+
+    void textChanged();
+
+private Q_SLOTS:
+    void contentsChange(int position, int charsRemoved, int charsAdded);
+
+private:
+    void reset();
+    QTextCharFormat charFormat() const;
+    QTextCursor textCursor() const;
+    void mergeFormatOnWordOrSelection(const QTextCharFormat &format);
+
+    QQuickTextDocument *mDocument;
+    int mCursorPosition;
+    int mSelectionStart;
+    int mSelectionEnd;
+    QSharedPointer<QTextCharFormat> mCachedTextFormat;
+};