TimeDisplayWidget: new widget for displaying current playback time

This new widget displays current playback times in LCD style. An initial
basic implementation has been provided by by Rubén Ibarra Pastor.

include/TimeDisplayWidget.h

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+/*
+ * TimeDisplayWidget.h - widget for displaying current playback time
+ *
+ * Copyright (c) 2014 Ruben Ibarra
+ * Copyright (c) 2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ *
+ * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
+ *
+ * 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.
+ *
+ * This program 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 this program (see COPYING); if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ */
+
+#ifndef _TIME_DISPLAY_WIDGET
+#define _TIME_DISPLAY_WIDGET
+
+#include <QtGui/QWidget>
+#include <QtGui/QHBoxLayout>
+
+#include "LcdWidget.h"
+
+
+class TimeDisplayWidget : public QWidget
+{
+	Q_OBJECT
+public:
+	TimeDisplayWidget();
+	virtual ~TimeDisplayWidget();
+
+
+protected:
+	virtual void mousePressEvent( QMouseEvent* mouseEvent );
+
+
+private slots:
+	void updateTime();
+
+
+private:
+	enum DisplayModes
+	{
+		MinutesSeconds,
+		BarsTicks,
+		DisplayModeCount
+	};
+	typedef DisplayModes DisplayMode;
+
+	void setDisplayMode( DisplayMode displayMode );
+
+	DisplayMode m_displayMode;
+	QHBoxLayout m_spinBoxesLayout;
+	LcdWidget m_majorLCD;
+	LcdWidget m_minorLCD;
+	LcdWidget m_milliSecondsLCD;
+
+} ;
+
+#endif

src/gui/widgets/TimeDisplayWidget.cpp

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+/*
+ * TimeDisplayWidget.cpp - widget for displaying current playback time
+ *
+ * Copyright (c) 2014 Tobias Doerffel <tobydox/at/users.sourceforge.net>
+ *
+ * This file is part of Linux MultiMedia Studio - http://lmms.sourceforge.net
+ *
+ * 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.
+ *
+ * This program 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 this program (see COPYING); if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include <QtGui/QMouseEvent>
+
+#include "TimeDisplayWidget.h"
+#include "MainWindow.h"
+#include "engine.h"
+#include "tooltip.h"
+#include "song.h"
+
+
+
+TimeDisplayWidget::TimeDisplayWidget() :
+	QWidget(),
+	m_displayMode( MinutesSeconds ),
+	m_spinBoxesLayout( this ),
+	m_majorLCD( 2, this ),
+	m_minorLCD( 2, this ),
+	m_milliSecondsLCD( 3, this )
+{
+	m_spinBoxesLayout.setSpacing( 0 );
+	m_spinBoxesLayout.setMargin( 0 );
+	m_spinBoxesLayout.addWidget( &m_majorLCD );
+	m_spinBoxesLayout.addWidget( &m_minorLCD );
+	m_spinBoxesLayout.addWidget( &m_milliSecondsLCD );
+
+	setMaximumHeight( 32 );
+
+	toolTip::add( this, tr( "click to change time units" ) );
+
+	// update labels of LCD spinboxes
+	setDisplayMode( m_displayMode );
+
+	connect( engine::mainWindow(), SIGNAL( periodicUpdate() ),
+					this, SLOT( updateTime() ) );
+}
+
+
+
+
+TimeDisplayWidget::~TimeDisplayWidget()
+{
+}
+
+
+
+
+
+void TimeDisplayWidget::setDisplayMode( DisplayMode displayMode )
+{
+	m_displayMode = displayMode;
+
+	m_milliSecondsLCD.setLabel( "MSEC" );
+
+	switch( m_displayMode )
+	{
+		case MinutesSeconds:
+			m_majorLCD.setLabel( "MIN" );
+			m_minorLCD.setLabel( "SEC" );
+			break;
+
+		case BarsTicks:
+			m_majorLCD.setLabel( "BAR" );
+			m_minorLCD.setLabel( "TICK" );
+			break;
+
+		default: break;
+	}
+}
+
+
+
+
+void TimeDisplayWidget::updateTime()
+{
+	song* s = engine::getSong();
+
+	switch( m_displayMode )
+	{
+		case MinutesSeconds:
+			m_majorLCD.setValue( s->getMilliseconds() / 60000 );
+			m_minorLCD.setValue( ( s->getMilliseconds() / 1000 ) % 60 );
+			break;
+
+		case BarsTicks:
+			m_majorLCD.setValue( s->getTacts() );
+			m_minorLCD.setValue( ( s->getTicks() % s->ticksPerTact() ) / 3 );
+			break;
+
+		default: break;
+	}
+	m_milliSecondsLCD.setValue( s->getMilliseconds() % 1000 );
+}
+
+
+
+
+void TimeDisplayWidget::mousePressEvent( QMouseEvent* mouseEvent )
+{
+	if( mouseEvent->button() == Qt::LeftButton )
+	{
+		if( m_displayMode == MinutesSeconds )
+		{
+			setDisplayMode( BarsTicks );
+		}
+		else
+		{
+			setDisplayMode( MinutesSeconds );
+		}
+	}
+}
+
+
+
+#include "moc_TimeDisplayWidget.cxx"
+
+