From fac2e2fc5b688bb5f4d8b470da01166317a0960b Mon Sep 17 00:00:00 2001
From: Christian Muehlhaeuser <muesli@gmail.com>
Date: Mon, 28 May 2012 17:45:40 +0200
Subject: [PATCH] * Make HeaderLabel an alternative drag-for-resize method.

---
 src/libtomahawk/widgets/HeaderLabel.cpp | 37 +++++++++++++++++++++++--
 src/libtomahawk/widgets/HeaderLabel.h   |  6 ++++
 2 files changed, 40 insertions(+), 3 deletions(-)

diff --git a/src/libtomahawk/widgets/HeaderLabel.cpp b/src/libtomahawk/widgets/HeaderLabel.cpp
index cfd3542a9..edec62258 100644
--- a/src/libtomahawk/widgets/HeaderLabel.cpp
+++ b/src/libtomahawk/widgets/HeaderLabel.cpp
@@ -20,17 +20,20 @@
 
 #include <QApplication>
 #include <QPainter>
+#include <QMouseEvent>
 
 #include "utils/Logger.h"
 #include "utils/StyleHelper.h"
 #include "utils/TomahawkUtilsGui.h"
 
-
 static const int s_defaultFontSize = 12;
 
+
 HeaderLabel::HeaderLabel( QWidget* parent )
     : QLabel( parent )
     , m_parent( parent )
+    , m_pressed( false )
+    , m_moved( false )
 {
     QFont f( font() );
     f.setBold( true );
@@ -38,6 +41,7 @@ HeaderLabel::HeaderLabel( QWidget* parent )
 
     setFont( f );
     setFixedHeight( TomahawkUtils::headerHeight() );
+    setMouseTracking( true );
 }
 
 
@@ -52,6 +56,7 @@ HeaderLabel::sizeHint() const
     return QLabel::sizeHint();
 }
 
+
 int
 HeaderLabel::defaultFontSize()
 {
@@ -63,7 +68,14 @@ void
 HeaderLabel::mousePressEvent( QMouseEvent* event )
 {
     QFrame::mousePressEvent( event );
-    m_time.start();
+    
+    if ( !m_moved )
+    {
+        m_time.start();
+        
+        m_pressed = true;
+        m_dragPoint = event->pos();
+    }
 }
 
 
@@ -71,8 +83,27 @@ void
 HeaderLabel::mouseReleaseEvent( QMouseEvent* event )
 {
     QFrame::mouseReleaseEvent( event );
-    if ( m_time.elapsed() < qApp->doubleClickInterval() )
+
+    if ( !m_moved && m_time.elapsed() < qApp->doubleClickInterval() )
         emit clicked();
+
+    m_pressed = false;
+    m_moved = false;
+}
+
+
+void
+HeaderLabel::mouseMoveEvent( QMouseEvent* event )
+{
+    if ( m_pressed )
+    {
+        QPoint delta = m_dragPoint - event->pos();
+        if ( abs( delta.y() ) > 3 )
+        {
+            m_moved = true;
+            emit resized( delta );
+        }
+    }
 }
 
 
diff --git a/src/libtomahawk/widgets/HeaderLabel.h b/src/libtomahawk/widgets/HeaderLabel.h
index 4d015d5c9..88f244c7e 100644
--- a/src/libtomahawk/widgets/HeaderLabel.h
+++ b/src/libtomahawk/widgets/HeaderLabel.h
@@ -43,6 +43,7 @@ public:
 
 signals:
     void clicked();
+    void resized( const QPoint& delta );
 
 protected:
 //    void changeEvent( QEvent* e );
@@ -50,10 +51,15 @@ protected:
 
     void mousePressEvent( QMouseEvent* event );
     void mouseReleaseEvent( QMouseEvent* event );
+    void mouseMoveEvent( QMouseEvent* event );
 
 private:
     QWidget* m_parent;
     QTime m_time;
+
+    QPoint m_dragPoint;
+    bool m_pressed;
+    bool m_moved;
 };
 
 #endif // HEADERLABEL_H