Make windows snap to each other

src/mainwindow/maindisplay.cpp

@@ -119,21 +119,6 @@ MainDisplay::setVolume (int volume)
 	xmmsh.volumeSet((uint)volume);
 }
 
-void 
-MainDisplay::mouseMoveEvent (QMouseEvent *event)
-{
-	MainWindow *mw = dynamic_cast<MainWindow *>(window ());
-	PlaylistWindow *pl = mw->getPL ();
-
-	m_mw->move (event->globalPos().x() - m_diffX,
-				event->globalPos().y() - m_diffY);
-
-	if (!pl || !pl->isVisible ())
-		return;
-
-	pl->move (event->globalPos().x() - m_diffX,
-			  event->globalPos().y() - m_diffY + size().height());
-}
 
 void
 MainDisplay::setPixmaps (Skin *skin)

src/mainwindow/maindisplay.h

@@ -66,8 +66,6 @@ class MainDisplay : public SkinDisplay
 		PlayStatus *m_playstatus;
 		MainWindow *getMW(void) { return m_mw; }
 
-		void mouseMoveEvent (QMouseEvent *);
-
 	public slots:
 		void setPixmaps(Skin *skin);
 		void setStatus (Xmms::Playback::Status status);

src/mainwindow/mainwindow.cpp

@@ -33,7 +33,7 @@
 #include <QPluginLoader>
 #include <qplugin.h>
 
-MainWindow::MainWindow (QWidget *parent) : QMainWindow (parent)
+MainWindow::MainWindow (QWidget *parent) : BaseWindow (parent)
 {
 	QSettings s;
 
@@ -130,5 +130,15 @@ MainWindow::moveEvent (QMoveEvent *event)
 {
 	QSettings s;
 	s.setValue ("mainwindow/pos", pos ());
-}
 
+	// move all connected windows to their new position
+	// at the moment connected windows can be m_playlistwin and m_equalizer
+	if (!m_connectedWidgets.isEmpty ()) {
+		QMap<QWidget *,QPoint>::const_iterator i
+		                        = m_connectedWidgets.constBegin ();
+		while (i != m_connectedWidgets.constEnd ()) {
+			i.key()->move (pos () + i.value ());
+			++i;
+		}
+	}
+}

src/mainwindow/mainwindow.h

@@ -16,9 +16,9 @@
 #ifndef __MAINWINDOW_H__
 #define __MAINWINDOW_H__
 
-#include <QMainWindow>
-#include <QSettings>
+#include "basewindow.h"
 
+#include <QSettings>
 class QWidget;
 
 class MainDisplay;
@@ -26,7 +26,7 @@ class ShadedDisplay;
 class PlaylistWindow;
 class EqualizerWindow;
 
-class MainWindow : public QMainWindow
+class MainWindow : public BaseWindow
 {
 	Q_OBJECT
 	public:
@@ -55,6 +55,8 @@ class MainWindow : public QMainWindow
 		ShadedDisplay *m_shaded;
 		EqualizerWindow *m_equalizer;
 		PlaylistWindow *m_playlistwin;
+
+		QMap<QWidget *,QPoint> m_connectedWidgets;
 };