* Added HoverControls, a widget used when hovering an item in a GridView.

src/libtomahawk/widgets/HoverControls.cpp

@@ -0,0 +1,141 @@
+/* === This file is part of Tomahawk Player - <http://tomahawk-player.org> ===
+ *
+ *   Copyright 2014, 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 "HoverControls.h"
+
+#include "widgets/ImageButton.h"
+#include "utils/TomahawkUtilsGui.h"
+#include "utils/ImageRegistry.h"
+#include "utils/Logger.h"
+
+#include <QWidget>
+#include <QPixmap>
+#include <QPaintEvent>
+#include <QPainter>
+
+using namespace Tomahawk;
+
+
+HoverControls::HoverControls( QWidget* parent )
+    : QWidget( parent )
+    , m_hovering( false )
+{
+    setAutoFillBackground( false );
+    setMouseTracking( true );
+}
+
+
+HoverControls::~HoverControls()
+{
+}
+
+
+void
+HoverControls::resizeEvent( QResizeEvent* event )
+{
+    QWidget::resizeEvent( event );
+}
+
+
+void
+HoverControls::paintEvent( QPaintEvent* event )
+{
+    QPainter painter( this );
+    painter.setRenderHint( QPainter::Antialiasing );
+    painter.setOpacity( 0.7 );
+
+    QPen pen = QPen( Qt::white );
+    pen.setWidth( 2 );
+    painter.setPen( Qt::transparent );
+    painter.setBrush( Qt::transparent );
+
+    QRect figRect = event->rect().adjusted( 18, 2, -18, -2 );
+    if ( m_hovering )
+    {
+        painter.setBrush( Qt::white );
+        painter.drawRect( figRect );
+    }
+
+    painter.setPen( pen );
+
+    // circles look bad. make it an oval
+    const int bulgeWidth = 16;
+    // number of pixels to begin, counting inwards from figRect.x() and figRect.width().
+    // 0 means start at each end, negative means start inside the rect
+    const int offset = 0;
+
+    QPainterPath ppath;
+    ppath.moveTo( QPoint( figRect.x() + offset, figRect.y() ) );
+    QRect leftArcRect( figRect.x() + offset - bulgeWidth, figRect.y(), 2*bulgeWidth, figRect.height() );
+    ppath.arcTo( leftArcRect, 90, 180 );
+    painter.drawPath( ppath );
+
+    ppath = QPainterPath();
+    ppath.moveTo( figRect.x() + figRect.width() - offset, figRect.y() + figRect.height() );
+    leftArcRect = QRect( figRect.x() + figRect.width() - offset - bulgeWidth, figRect.y(), 2*bulgeWidth, figRect.height() );
+    ppath.arcTo( leftArcRect, -90, 180 );
+    painter.drawPath( ppath );
+
+    ppath = QPainterPath();
+    ppath.moveTo( QPoint( figRect.x() + offset + 2, figRect.y() ) );
+    ppath.lineTo( QPoint( figRect.x() + figRect.width() - offset - 2, figRect.y() ) );
+    painter.drawPath( ppath );
+
+    ppath = QPainterPath();
+    ppath.moveTo( QPoint( figRect.x() + offset + 2, figRect.y() + figRect.height() ) );
+    ppath.lineTo( QPoint( figRect.x() + figRect.width() - offset - 2, figRect.y() + figRect.height() ) );
+    painter.drawPath( ppath );
+
+    QColor col = Qt::white;
+    if ( m_hovering )
+        col = Qt::black;
+    QPixmap px = ImageRegistry::instance()->pixmap( RESPATH "images/play.svg", QSize( 16, 16 ), TomahawkUtils::Original, 1.0, col );
+    painter.drawPixmap( figRect.center() - QPoint( 7, 7 ), px );
+}
+
+
+void
+HoverControls::mouseReleaseEvent( QMouseEvent* event )
+{
+    QWidget::mouseReleaseEvent( event );
+
+    emit play();
+}
+
+
+void
+HoverControls::mouseMoveEvent( QMouseEvent* event )
+{
+    QWidget::mouseMoveEvent( event );
+
+    if ( !m_hovering )
+    {
+        m_hovering = true;
+        repaint();
+    }
+}
+
+
+void
+HoverControls::leaveEvent( QEvent* event )
+{
+    QWidget::leaveEvent( event );
+
+    m_hovering = false;
+    repaint();
+}

src/libtomahawk/widgets/HoverControls.h

@@ -0,0 +1,52 @@
+/* === This file is part of Tomahawk Player - <http://tomahawk-player.org> ===
+ *
+ *   Copyright 2014, 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 HOVERCONTROLS_H
+#define HOVERCONTROLS_H
+
+#include <QWidget>
+
+#include "DllMacro.h"
+
+class QPaintEvent;
+
+class DLLEXPORT HoverControls : public QWidget
+{
+    Q_OBJECT
+public:
+    explicit HoverControls( QWidget* parent = 0 );
+    virtual ~HoverControls();
+
+public slots:
+
+signals:
+    void play();
+
+protected:
+    virtual void resizeEvent( QResizeEvent* event );
+    virtual void paintEvent( QPaintEvent* event );
+
+    virtual void mouseReleaseEvent( QMouseEvent* event );
+    virtual void mouseMoveEvent( QMouseEvent* event );
+    virtual void leaveEvent( QEvent* event );
+
+private:
+    bool m_hovering;
+};
+
+#endif // HOVERCONTROLS_H