Output preview plugin

Pdf4QtViewerPlugins/OutputPreviewPlugin/outputpreviewplugin.cpp

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+//    Copyright (C) 2021 Jakub Melka
+//
+//    This file is part of Pdf4Qt.
+//
+//    Pdf4Qt is free software: you can redistribute it and/or modify
+//    it under the terms of the GNU Lesser General Public License as published by
+//    the Free Software Foundation, either version 3 of the License, or
+//    (at your option) any later version.
+//
+//    Pdf4Qt 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 Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public License
+//    along with Pdf4Qt.  If not, see <https://www.gnu.org/licenses/>.
+
+#include "outputpreviewplugin.h"
+#include "outputpreviewdialog.h"
+#include "pdfdrawwidget.h"
+
+#include <QAction>
+
+namespace pdfplugin
+{
+
+OutputPreviewPlugin::OutputPreviewPlugin() :
+    pdf::PDFPlugin(nullptr),
+    m_outputPreviewAction(nullptr)
+{
+
+}
+
+void OutputPreviewPlugin::setWidget(pdf::PDFWidget* widget)
+{
+    Q_ASSERT(!m_widget);
+
+    BaseClass::setWidget(widget);
+
+    m_outputPreviewAction = new QAction(QIcon(":/pdfplugins/outputpreview/preview.svg"), tr("Output Preview"), this);
+    m_outputPreviewAction->setObjectName("actionOutputPreview_OutputPreview");
+
+    connect(m_outputPreviewAction, &QAction::triggered, this, &OutputPreviewPlugin::onOutputPreviewTriggered);
+
+    updateActions();
+}
+
+void OutputPreviewPlugin::setDocument(const pdf::PDFModifiedDocument& document)
+{
+    BaseClass::setDocument(document);
+
+    if (document.hasReset())
+    {
+        updateActions();
+    }
+}
+
+std::vector<QAction*> OutputPreviewPlugin::getActions() const
+{
+    return { m_outputPreviewAction };
+}
+
+void OutputPreviewPlugin::onOutputPreviewTriggered()
+{
+    OutputPreviewDialog dialog(m_widget);
+    dialog.exec();
+}
+
+void OutputPreviewPlugin::updateActions()
+{
+    m_outputPreviewAction->setEnabled(m_widget && m_document);
+}
+
+}