Add ClickableLabel, a QLabel which emits the clicked signal.

src/libcalamaresui/widgets/ClickableLabel.cpp

@@ -0,0 +1,52 @@
+/* === This file is part of Calamares - <http://github.com/calamares> ===
+ *
+ *   Copyright 2014, Teo Mrnjavac <teo@kde.org>
+ *
+ *   Calamares is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   Calamares 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 General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with Calamares. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "ClickableLabel.h"
+
+#include <QApplication>
+
+
+ClickableLabel::ClickableLabel( QWidget* parent, Qt::WindowFlags f )
+    : QLabel( parent, f )
+{}
+
+
+ClickableLabel::ClickableLabel( const QString& text, QWidget* parent, Qt::WindowFlags f )
+    : QLabel( text, parent, f )
+{}
+
+
+ClickableLabel::~ClickableLabel()
+{}
+
+
+void
+ClickableLabel::mousePressEvent( QMouseEvent* event )
+{
+    QLabel::mousePressEvent( event );
+    m_time.start();
+}
+
+
+void
+ClickableLabel::mouseReleaseEvent( QMouseEvent* event )
+{
+    QLabel::mouseReleaseEvent( event );
+    if ( m_time.elapsed() < qApp->doubleClickInterval() )
+        emit clicked();
+}

src/libcalamaresui/widgets/ClickableLabel.h

@@ -0,0 +1,44 @@
+/* === This file is part of Calamares - <http://github.com/calamares> ===
+ *
+ *   Copyright 2014, Teo Mrnjavac <teo@kde.org>
+ *
+ *   Calamares is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   Calamares 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 General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with Calamares. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef CLICKABLELABEL_H
+#define CLICKABLELABEL_H
+
+#include <QLabel>
+#include <QTime>
+
+class ClickableLabel : public QLabel
+{
+    Q_OBJECT
+public:
+    explicit ClickableLabel( QWidget* parent = nullptr, Qt::WindowFlags f = 0 );
+    explicit ClickableLabel( const QString& text, QWidget* parent = nullptr, Qt::WindowFlags f = 0 );
+    virtual ~ClickableLabel();
+
+signals:
+    void clicked();
+
+protected:
+    virtual void mousePressEvent( QMouseEvent* event );
+    virtual void mouseReleaseEvent( QMouseEvent* event );
+
+private:
+    QTime m_time;
+};
+
+#endif // CLICKABLELABEL_H