Transform Clipboard to singleton and add rich text copying feature

src/clipboard.cpp

@@ -0,0 +1,62 @@
+/**
+ * SPDX-FileCopyrightText: Black Hat <bhat@encom.eu.org>
+ *
+ * SPDX-LicenseIdentifier: GPL-3.0-only
+ */
+#include "clipboard.h"
+
+#include <QClipboard>
+#include <QMimeData>
+#include <QRegularExpression>
+#include <QImage>
+#include <QDir>
+#include <QFileInfo>
+#include <QGuiApplication>
+#include <QUrl>
+
+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();
+}
+
+bool Clipboard::saveImage(const QUrl &localPath)
+{
+    if (!localPath.isLocalFile())
+        return false;
+
+    auto i = image();
+
+    if (i.isNull())
+        return false;
+
+    QString path = QFileInfo(localPath.toLocalFile()).absolutePath();
+    QDir dir;
+    if (!dir.exists(path)) {
+        dir.mkpath(path);
+    }
+
+    i.save(localPath.toLocalFile());
+
+    return true;
+}
+
+void Clipboard::saveText(QString message)
+{
+    QRegularExpression re("<[^>]*>");
+    auto *mineData = new QMimeData; // ownership is transfered to clipboard
+    mineData->setHtml(message);
+    mineData->setText(message.replace(re, ""));
+    m_clipboard->setMimeData(mineData);
+}