Added DropDownButton, mixing a push-button and a combo-box.

src/libtomahawk/CMakeLists.txt

@@ -144,6 +144,7 @@ set( libGuiSources
     widgets/ChartDataLoader.cpp
     widgets/ClickableLabel.cpp
     widgets/ComboBox.cpp
+    widgets/DropDownButton.cpp
     widgets/ElidedLabel.cpp
     widgets/FilterHeader.cpp
     widgets/CaptionLabel.cpp

src/libtomahawk/widgets/DropDownButton.cpp

@@ -0,0 +1,89 @@
+/* === This file is part of Tomahawk Player - <http://tomahawk-player.org> ===
+ *
+ *   Copyright 2015, Christian Muehlhaeuser <muesli@tomahawk-player.org>
+ *
+ *   Tomahawk 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.
+ *
+ *   Tomahawk 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 Tomahawk. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "DropDownButton.h"
+
+#include <QMouseEvent>
+
+#include "Artist.h"
+#include "Album.h"
+#include "Query.h"
+#include "utils/TomahawkStyle.h"
+#include "utils/TomahawkUtilsGui.h"
+#include "utils/Logger.h"
+
+using namespace Tomahawk;
+
+
+DropDownButton::DropDownButton( QWidget* parent )
+    : QComboBox( parent )
+{
+}
+
+
+DropDownButton::~DropDownButton()
+{
+}
+
+
+void
+DropDownButton::paintEvent( QPaintEvent* event )
+{
+    //    QComboBox::paintEvent( event );
+    QPainter p( this );
+    drawPrimitive( &p, contentsRect(), currentText() );
+}
+
+
+void
+DropDownButton::drawPrimitive( QPainter* p, const QRect& rect, const QString& text )
+{
+    p->save();
+
+    p->setRenderHint( QPainter::TextAntialiasing );
+    QRect r = rect.adjusted( 2, 2, -2, -2 );
+
+    p->setPen( TomahawkStyle::PLAYLIST_BUTTON_BACKGROUND.darker() );
+    p->setBrush( TomahawkStyle::PLAYLIST_BUTTON_BACKGROUND );
+    p->drawRect( r );
+
+    // paint divider
+    p->setPen( TomahawkStyle::PLAYLIST_BUTTON_FOREGROUND );
+    p->drawLine( QPoint( r.right() - 24, r.top() + 3 ), QPoint( r.right() - 24, r.bottom() - 3 ) );
+
+    // paint label
+    const QFontMetrics fm( p->font() );
+    r.adjust( 0, 0, -24, 0 ); // center-align left of the divider
+    p->drawText( r, Qt::AlignCenter, fm.elidedText( text, Qt::ElideRight, r.width() ) );
+
+    p->restore();
+}
+
+
+void
+DropDownButton::mousePressEvent( QMouseEvent* event )
+{
+    if ( event->pos().x() > width() - 24 )
+    {
+        QComboBox::mousePressEvent( event );
+        return;
+    }
+
+    event->accept();
+    emit clicked();
+}

src/libtomahawk/widgets/DropDownButton.h

@@ -0,0 +1,51 @@
+/* === This file is part of Tomahawk Player - <http://tomahawk-player.org> ===
+ *
+ *   Copyright 2015, Christian Muehlhaeuser <muesli@tomahawk-player.org>
+ *
+ *   Tomahawk 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.
+ *
+ *   Tomahawk 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 Tomahawk. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef DROPDOWNBUTTON_H
+#define DROPDOWNBUTTON_H
+
+#include <QComboBox>
+
+#include "Typedefs.h"
+#include "DllMacro.h"
+
+class DLLEXPORT DropDownButton : public QComboBox
+{
+Q_OBJECT
+
+public:
+    explicit DropDownButton( QWidget* parent = 0 );
+    virtual ~DropDownButton();
+
+    static void drawPrimitive( QPainter* p, const QRect& rect, const QString& text );
+
+public slots:
+
+signals:
+    void clicked();
+
+protected:
+    void paintEvent( QPaintEvent* event );
+    void mousePressEvent( QMouseEvent* event );
+
+private slots:
+
+private:
+};
+
+#endif // DROPDOWNBUTTON_H