| /**************************************************************************** |
| ** |
| ** Copyright (C) 2017 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the examples of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:BSD$ |
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| ** BSD License Usage |
| ** Alternatively, you may use this file under the terms of the BSD license |
| ** as follows: |
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| ** "Redistribution and use in source and binary forms, with or without |
| ** modification, are permitted provided that the following conditions are |
| ** met: |
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| ****************************************************************************/ |
| |
| #include "documenthandler.h" |
| |
| #include <QFile> |
| #include <QFileInfo> |
| #include <QFileSelector> |
| #include <QMimeDatabase> |
| #include <QQmlFile> |
| #include <QQmlFileSelector> |
| #include <QQuickTextDocument> |
| #include <QTextCharFormat> |
| #include <QTextCodec> |
| #include <QTextDocument> |
| #include <QDebug> |
| |
| DocumentHandler::DocumentHandler(QObject *parent) |
| : QObject(parent) |
| , m_document(nullptr) |
| , m_cursorPosition(-1) |
| , m_selectionStart(0) |
| , m_selectionEnd(0) |
| { |
| } |
| |
| QQuickTextDocument *DocumentHandler::document() const |
| { |
| return m_document; |
| } |
| |
| void DocumentHandler::setDocument(QQuickTextDocument *document) |
| { |
| if (document == m_document) |
| return; |
| |
| if (m_document) |
| m_document->textDocument()->disconnect(this); |
| m_document = document; |
| if (m_document) |
| connect(m_document->textDocument(), &QTextDocument::modificationChanged, this, &DocumentHandler::modifiedChanged); |
| emit documentChanged(); |
| } |
| |
| int DocumentHandler::cursorPosition() const |
| { |
| return m_cursorPosition; |
| } |
| |
| void DocumentHandler::setCursorPosition(int position) |
| { |
| if (position == m_cursorPosition) |
| return; |
| |
| m_cursorPosition = position; |
| reset(); |
| emit cursorPositionChanged(); |
| } |
| |
| int DocumentHandler::selectionStart() const |
| { |
| return m_selectionStart; |
| } |
| |
| void DocumentHandler::setSelectionStart(int position) |
| { |
| if (position == m_selectionStart) |
| return; |
| |
| m_selectionStart = position; |
| emit selectionStartChanged(); |
| } |
| |
| int DocumentHandler::selectionEnd() const |
| { |
| return m_selectionEnd; |
| } |
| |
| void DocumentHandler::setSelectionEnd(int position) |
| { |
| if (position == m_selectionEnd) |
| return; |
| |
| m_selectionEnd = position; |
| emit selectionEndChanged(); |
| } |
| |
| QString DocumentHandler::fontFamily() const |
| { |
| QTextCursor cursor = textCursor(); |
| if (cursor.isNull()) |
| return QString(); |
| QTextCharFormat format = cursor.charFormat(); |
| return format.font().family(); |
| } |
| |
| void DocumentHandler::setFontFamily(const QString &family) |
| { |
| QTextCharFormat format; |
| format.setFontFamily(family); |
| mergeFormatOnWordOrSelection(format); |
| emit fontFamilyChanged(); |
| } |
| |
| QColor DocumentHandler::textColor() const |
| { |
| QTextCursor cursor = textCursor(); |
| if (cursor.isNull()) |
| return QColor(Qt::black); |
| QTextCharFormat format = cursor.charFormat(); |
| return format.foreground().color(); |
| } |
| |
| void DocumentHandler::setTextColor(const QColor &color) |
| { |
| QTextCharFormat format; |
| format.setForeground(QBrush(color)); |
| mergeFormatOnWordOrSelection(format); |
| emit textColorChanged(); |
| } |
| |
| Qt::Alignment DocumentHandler::alignment() const |
| { |
| QTextCursor cursor = textCursor(); |
| if (cursor.isNull()) |
| return Qt::AlignLeft; |
| return textCursor().blockFormat().alignment(); |
| } |
| |
| void DocumentHandler::setAlignment(Qt::Alignment alignment) |
| { |
| QTextBlockFormat format; |
| format.setAlignment(alignment); |
| QTextCursor cursor = textCursor(); |
| cursor.mergeBlockFormat(format); |
| emit alignmentChanged(); |
| } |
| |
| bool DocumentHandler::bold() const |
| { |
| QTextCursor cursor = textCursor(); |
| if (cursor.isNull()) |
| return false; |
| return textCursor().charFormat().fontWeight() == QFont::Bold; |
| } |
| |
| void DocumentHandler::setBold(bool bold) |
| { |
| QTextCharFormat format; |
| format.setFontWeight(bold ? QFont::Bold : QFont::Normal); |
| mergeFormatOnWordOrSelection(format); |
| emit boldChanged(); |
| } |
| |
| bool DocumentHandler::italic() const |
| { |
| QTextCursor cursor = textCursor(); |
| if (cursor.isNull()) |
| return false; |
| return textCursor().charFormat().fontItalic(); |
| } |
| |
| void DocumentHandler::setItalic(bool italic) |
| { |
| QTextCharFormat format; |
| format.setFontItalic(italic); |
| mergeFormatOnWordOrSelection(format); |
| emit italicChanged(); |
| } |
| |
| bool DocumentHandler::underline() const |
| { |
| QTextCursor cursor = textCursor(); |
| if (cursor.isNull()) |
| return false; |
| return textCursor().charFormat().fontUnderline(); |
| } |
| |
| void DocumentHandler::setUnderline(bool underline) |
| { |
| QTextCharFormat format; |
| format.setFontUnderline(underline); |
| mergeFormatOnWordOrSelection(format); |
| emit underlineChanged(); |
| } |
| |
| int DocumentHandler::fontSize() const |
| { |
| QTextCursor cursor = textCursor(); |
| if (cursor.isNull()) |
| return 0; |
| QTextCharFormat format = cursor.charFormat(); |
| return format.font().pointSize(); |
| } |
| |
| void DocumentHandler::setFontSize(int size) |
| { |
| if (size <= 0) |
| return; |
| |
| QTextCursor cursor = textCursor(); |
| if (cursor.isNull()) |
| return; |
| |
| if (!cursor.hasSelection()) |
| cursor.select(QTextCursor::WordUnderCursor); |
| |
| if (cursor.charFormat().property(QTextFormat::FontPointSize).toInt() == size) |
| return; |
| |
| QTextCharFormat format; |
| format.setFontPointSize(size); |
| mergeFormatOnWordOrSelection(format); |
| emit fontSizeChanged(); |
| } |
| |
| QString DocumentHandler::fileName() const |
| { |
| const QString filePath = QQmlFile::urlToLocalFileOrQrc(m_fileUrl); |
| const QString fileName = QFileInfo(filePath).fileName(); |
| if (fileName.isEmpty()) |
| return QStringLiteral("untitled.txt"); |
| return fileName; |
| } |
| |
| QString DocumentHandler::fileType() const |
| { |
| return QFileInfo(fileName()).suffix(); |
| } |
| |
| QUrl DocumentHandler::fileUrl() const |
| { |
| return m_fileUrl; |
| } |
| |
| void DocumentHandler::load(const QUrl &fileUrl) |
| { |
| if (fileUrl == m_fileUrl) |
| return; |
| |
| QQmlEngine *engine = qmlEngine(this); |
| if (!engine) { |
| qWarning() << "load() called before DocumentHandler has QQmlEngine"; |
| return; |
| } |
| |
| const QUrl path = QQmlFileSelector::get(engine)->selector()->select(fileUrl); |
| const QString fileName = QQmlFile::urlToLocalFileOrQrc(path); |
| if (QFile::exists(fileName)) { |
| QMimeType mime = QMimeDatabase().mimeTypeForFile(fileName); |
| QFile file(fileName); |
| if (file.open(QFile::ReadOnly)) { |
| QByteArray data = file.readAll(); |
| if (QTextDocument *doc = textDocument()) { |
| doc->setBaseUrl(path.adjusted(QUrl::RemoveFilename)); |
| if (mime.inherits("text/markdown")) { |
| emit loaded(QString::fromUtf8(data), Qt::MarkdownText); |
| } else { |
| QTextCodec *codec = QTextCodec::codecForHtml(data); |
| emit loaded(codec->toUnicode(data), Qt::AutoText); |
| } |
| doc->setModified(false); |
| } |
| |
| reset(); |
| } |
| } |
| |
| m_fileUrl = fileUrl; |
| emit fileUrlChanged(); |
| } |
| |
| void DocumentHandler::saveAs(const QUrl &fileUrl) |
| { |
| QTextDocument *doc = textDocument(); |
| if (!doc) |
| return; |
| |
| const QString filePath = fileUrl.toLocalFile(); |
| const bool isHtml = QFileInfo(filePath).suffix().contains(QLatin1String("htm")); |
| QFile file(filePath); |
| if (!file.open(QFile::WriteOnly | QFile::Truncate | (isHtml ? QFile::NotOpen : QFile::Text))) { |
| emit error(tr("Cannot save: ") + file.errorString()); |
| return; |
| } |
| file.write((isHtml ? doc->toHtml() : doc->toPlainText()).toUtf8()); |
| file.close(); |
| |
| if (fileUrl == m_fileUrl) |
| return; |
| |
| m_fileUrl = fileUrl; |
| emit fileUrlChanged(); |
| } |
| |
| void DocumentHandler::reset() |
| { |
| emit fontFamilyChanged(); |
| emit alignmentChanged(); |
| emit boldChanged(); |
| emit italicChanged(); |
| emit underlineChanged(); |
| emit fontSizeChanged(); |
| emit textColorChanged(); |
| } |
| |
| QTextCursor DocumentHandler::textCursor() const |
| { |
| QTextDocument *doc = textDocument(); |
| if (!doc) |
| return QTextCursor(); |
| |
| QTextCursor cursor = QTextCursor(doc); |
| if (m_selectionStart != m_selectionEnd) { |
| cursor.setPosition(m_selectionStart); |
| cursor.setPosition(m_selectionEnd, QTextCursor::KeepAnchor); |
| } else { |
| cursor.setPosition(m_cursorPosition); |
| } |
| return cursor; |
| } |
| |
| QTextDocument *DocumentHandler::textDocument() const |
| { |
| if (!m_document) |
| return nullptr; |
| |
| return m_document->textDocument(); |
| } |
| |
| void DocumentHandler::mergeFormatOnWordOrSelection(const QTextCharFormat &format) |
| { |
| QTextCursor cursor = textCursor(); |
| if (!cursor.hasSelection()) |
| cursor.select(QTextCursor::WordUnderCursor); |
| cursor.mergeCharFormat(format); |
| } |
| |
| bool DocumentHandler::modified() const |
| { |
| return m_document && m_document->textDocument()->isModified(); |
| } |
| |
| void DocumentHandler::setModified(bool m) |
| { |
| if (m_document) |
| m_document->textDocument()->setModified(m); |
| } |