1 files changed, 136 insertions, 0 deletions
diff --git a/libk3b/tools/k3bpushbutton.cpp b/libk3b/tools/k3bpushbutton.cpp
new file mode 100644
index 0000000..11425ad
--- /dev/null
+++ b/libk3b/tools/k3bpushbutton.cpp
@@ -0,0 +1,136 @@
+/* 
+ *
+ * $Id: k3bpushbutton.cpp 619556 2007-01-03 17:38:12Z trueg $
+ * Copyright (C) 2004 Sebastian Trueg <trueg@k3b.org>
+ *
+ * This file is part of the K3b project.
+ * Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ * See the file "COPYING" for the exact licensing terms.
+ */
+
+#include "k3bpushbutton.h"
+
+#include <qtimer.h>
+#include <qpopupmenu.h>
+#include <qevent.h>
+
+#include <kglobalsettings.h>
+#include <kapplication.h>
+
+
+
+class K3bPushButton::Private
+{
+public:
+  Private() 
+    : popupTimer(0) {
+  }
+
+  QTimer* popupTimer;
+  QPoint mousePressPos;
+};
+
+
+
+K3bPushButton::K3bPushButton( QWidget* parent, const char* name )
+  : KPushButton( parent, name )
+{
+  d = new Private();
+  installEventFilter(this);
+}
+
+
+K3bPushButton::K3bPushButton( const QString& text, QWidget* parent, const char* name )
+  : KPushButton( text, parent, name )
+{
+  d = new Private();
+  installEventFilter(this);
+}
+
+
+K3bPushButton::K3bPushButton( const QIconSet& icon, const QString& text,
+			      QWidget* parent, const char* name )
+  : KPushButton( icon, text, parent, name )
+{
+  d = new Private();
+  installEventFilter(this);
+}
+
+
+K3bPushButton::K3bPushButton( const KGuiItem& item, QWidget* parent, const char* name )
+  : KPushButton( item, parent, name )
+{
+  d = new Private();
+  installEventFilter(this);
+}
+
+
+K3bPushButton::~K3bPushButton()
+{
+  delete d;
+}
+
+
+void K3bPushButton::setDelayedPopupMenu( QPopupMenu* popup )
+{
+  if( !d->popupTimer ) {
+    d->popupTimer = new QTimer( this );
+    connect( d->popupTimer, SIGNAL(timeout()), this, SLOT(slotDelayedPopup()) );
+  }
+
+  setPopup( popup );
+
+  // we need to do the popup handling ourselves so we cheat a little
+  // QPushButton connects a popup slot to the pressed signal which we disconnect here
+  disconnect( this );
+}
+
+
+bool K3bPushButton::eventFilter( QObject* o, QEvent* ev )
+{
+  if( dynamic_cast<K3bPushButton*>(o) == this ) {
+
+    // Popup the menu when the left mousebutton is pressed and the mouse
+    // is moved by a small distance.
+    if( popup() ) {
+      if( ev->type() == QEvent::MouseButtonPress ) {
+        QMouseEvent* mev = static_cast<QMouseEvent*>(ev);
+        d->mousePressPos = mev->pos();
+	d->popupTimer->start( QApplication::startDragTime() );
+      }
+      else if( ev->type() == QEvent::MouseMove ) {
+        QMouseEvent* mev = static_cast<QMouseEvent*>(ev);
+        if( ( mev->pos() - d->mousePressPos).manhattanLength() > KGlobalSettings::dndEventDelay() ) {
+	  d->popupTimer->stop();
+	  slotDelayedPopup();
+          return true;
+        }
+      }
+    }
+  }
+
+  return KPushButton::eventFilter( o, ev );
+}
+
+
+void K3bPushButton::slotDelayedPopup()
+{
+  d->popupTimer->stop();
+
+  if( isDown() ) {
+    // popup the menu.
+    // this has been taken from the QPushButton code
+    if( mapToGlobal( QPoint( 0, rect().bottom() ) ).y() + popup()->sizeHint().height() <= qApp->desktop()->height() )
+      popup()->exec( mapToGlobal( rect().bottomLeft() ) );
+    else
+      popup()->exec( mapToGlobal( rect().topLeft() - QPoint( 0, popup()->sizeHint().height() ) ) );
+    setDown( false );
+  }
+}
+
+#include "k3bpushbutton.moc"