Add Text Editor example

A follow up commit will contain the touch UI.

Change-Id: I26275fdd31294506821fa3e3e4a4bb63329665b9
Task-number: QTBUG-54952
Reviewed-by: J-P Nurmi <jpnurmi@qt.io>

1 files changed, 173 insertions, 0 deletions

diff --git a/examples/quickcontrols2/texteditor/documenthandler.h b/examples/quickcontrols2/texteditor/documenthandler.h
new file mode 100644
index 00000000..48e2c509
--- /dev/null
+++ b/examples/quickcontrols2/texteditor/documenthandler.h
@@ -0,0 +1,173 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of The Qt Company Ltd nor the names of its
+**     contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef DOCUMENTHANDLER_H
+#define DOCUMENTHANDLER_H
+
+#include <QFont>
+#include <QObject>
+#include <QTextCursor>
+#include <QUrl>
+
+QT_BEGIN_NAMESPACE
+class QTextDocument;
+class QQuickTextDocument;
+QT_END_NAMESPACE
+
+class DocumentHandler : 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(QUrl fileUrl READ fileUrl WRITE setFileUrl NOTIFY fileUrlChanged)
+    Q_PROPERTY(QString text READ text WRITE setText NOTIFY textChanged)
+    Q_PROPERTY(QString documentTitle READ documentTitle WRITE setDocumentTitle NOTIFY documentTitleChanged)
+
+public:
+    explicit DocumentHandler(QObject *parent = nullptr);
+
+    QQuickTextDocument *document() const;
+    void setDocument(QQuickTextDocument *quickDoc);
+
+    void setCursorPosition(int position);
+    void setSelectionStart(int position);
+    void setSelectionEnd(int position);
+
+    int cursorPosition() const { return m_cursorPosition; }
+    int selectionStart() const { return m_selectionStart; }
+    int selectionEnd() const { return m_selectionEnd; }
+
+    QString fontFamily() const;
+
+    QColor textColor() const;
+
+    Qt::Alignment alignment() const;
+    void setAlignment(Qt::Alignment alignment);
+
+    bool bold() const;
+    bool italic() const;
+    bool underline() const;
+    int fontSize() const;
+
+    QUrl fileUrl() const;
+    QString text() const;
+
+    QString documentTitle() const;
+
+public Q_SLOTS:
+    void setBold(bool bold);
+    void setItalic(bool italic);
+    void setUnderline(bool underline);
+    void setFontSize(int fontSize);
+    void setTextColor(const QColor &color);
+    void setFontFamily(const QString &fontFamily);
+
+    void setFileUrl(const QUrl &fileUrl);
+    void setText(const QString &text);
+    void saveAs(const QUrl &fileUrl, const QString &fileType);
+
+    void setDocumentTitle(const QString &documentTitle);
+
+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 fileUrlChanged();
+
+    void textChanged();
+    void documentTitleChanged();
+    void error(const QString &message);
+
+private:
+    void reset();
+    QTextCursor textCursor() const;
+    void mergeFormatOnWordOrSelection(const QTextCharFormat &format);
+
+    QQuickTextDocument *m_quickDoc;
+    QTextDocument *m_doc;
+
+    int m_cursorPosition;
+    int m_selectionStart;
+    int m_selectionEnd;
+
+    QFont m_font;
+    int m_fontSize;
+    QUrl m_fileUrl;
+    QString m_text;
+    QString m_documentTitle;
+};
+
+#endif