Move NeoChatConnection and NeoChatRoom to LibNeoChat

Move `NeoChatConnection` and `NeoChatRoom` to `LibNeoChat` along with any required dependencies.

src/libneochat/clipboard.cpp

@@ -0,0 +1,85 @@
+// SPDX-FileCopyrightText: 2019 Black Hat <bhat@encom.eu.org>
+// SPDX-License-Identifier: GPL-3.0-only
+
+#include "clipboard.h"
+
+#include <QClipboard>
+#include <QDateTime>
+#include <QDir>
+#include <QFileInfo>
+#include <QGuiApplication>
+#include <QImage>
+#include <QMimeData>
+#include <QRegularExpression>
+#include <QStandardPaths>
+#include <QUrl>
+
+using namespace Qt::StringLiterals;
+
+Clipboard::Clipboard(QObject *parent)
+    : QObject(parent)
+    , m_clipboard(QGuiApplication::clipboard())
+{
+    connect(m_clipboard, &QClipboard::changed, this, &Clipboard::imageChanged);
+}
+
+bool Clipboard::hasImage() const
+{
+    return !image().isNull();
+}
+
+QImage Clipboard::image() const
+{
+    return m_clipboard->image();
+}
+
+QString Clipboard::saveImage(QString localPath) const
+{
+    QString imageDir(u"%1/screenshots"_s.arg(QStandardPaths::writableLocation(QStandardPaths::CacheLocation)));
+
+    if (!QDir().exists(imageDir)) {
+        QDir().mkdir(imageDir);
+    }
+
+    if (localPath.isEmpty()) {
+        localPath = u"file://%1/%2.png"_s.arg(imageDir, QDateTime::currentDateTime().toString(u"yyyy-MM-dd-hh-mm-ss"_s));
+    }
+    QUrl url(localPath);
+    if (!url.isLocalFile()) {
+        return {};
+    }
+    auto image = this->image();
+
+    if (image.isNull()) {
+        return {};
+    }
+
+    if (image.save(url.toLocalFile())) {
+        return localPath;
+    } else {
+        return {};
+    }
+}
+
+void Clipboard::saveText(QString message)
+{
+    static QRegularExpression re(u"<[^>]*>"_s);
+    auto *mimeData = new QMimeData; // ownership is transferred to clipboard
+    mimeData->setHtml(message);
+    mimeData->setText(message.replace(re, QString()));
+    m_clipboard->setMimeData(mimeData);
+}
+
+void Clipboard::setImage(const QUrl &url)
+{
+    if (url.isLocalFile()) {
+        QImage img(url.path());
+        auto *mimeData = new QMimeData;
+        mimeData->setImageData(img);
+        if (!img.isNull()) {
+            m_clipboard->setMimeData(mimeData);
+        }
+    }
+}
+
+#include "moc_clipboard.cpp"