changeset 1188:9907be1c4f89 levelpanwidget

As NotifyingPushButton, but a ToolButton

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/widgets/NotifyingToolButton.cpp	Thu Dec 15 11:53:52 2016 +0000
@@ -0,0 +1,35 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, Queen Mary, University of London.
+    This file copyright 2007 QMUL.
+    
+    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 included with this distribution for more information.
+*/
+
+#include "NotifyingToolButton.h"
+
+NotifyingToolButton::~NotifyingToolButton()
+{
+}
+
+void
+NotifyingToolButton::enterEvent(QEvent *e)
+{
+    QToolButton::enterEvent(e);
+    emit mouseEntered();
+}
+
+void
+NotifyingToolButton::leaveEvent(QEvent *e)
+{
+    QToolButton::enterEvent(e);
+    emit mouseLeft();
+}
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/widgets/NotifyingToolButton.h	Thu Dec 15 11:53:52 2016 +0000
@@ -0,0 +1,47 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, Queen Mary, University of London.
+    This file copyright 2007 QMUL.
+    
+    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 included with this distribution for more information.
+*/
+
+#ifndef SV_NOTIFYING_TOOL_BUTTON_H
+#define SV_NOTIFYING_TOOL_BUTTON_H
+
+#include <QToolButton>
+
+/**
+ * Very trivial enhancement to QToolButton to make it emit signals
+ * when the mouse enters and leaves (for context help). See also
+ * NotifyingPushButton
+ */
+
+class NotifyingToolButton : public QToolButton
+{
+    Q_OBJECT
+
+public:
+    NotifyingToolButton(QWidget *parent = 0) :
+        QToolButton(parent) { }
+
+    virtual ~NotifyingToolButton();
+
+signals:
+    void mouseEntered();
+    void mouseLeft();
+
+protected:
+    virtual void enterEvent(QEvent *);
+    virtual void leaveEvent(QEvent *);
+};
+
+#endif
+