qmminibuffer.cpp

可以播放MP3,wma等文件格式的播放器

/* ;-*-c++-*-
 * 
 * qmminibuffer.cpp
 *
 * $Id: qmminibuffer.cpp,v 1.11.2.1 2002/10/10 21:40:52 kyllingstad Exp $
 * 
 * Apollo sound player: http://www.apolloplayer.org
 * Copyright(C) 2000-2002 Apollo Team.  See CREDITS file.
 *
 * 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; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * The GNU General Public License is also available online at:
 *
 * http://www.gnu.org/copyleft/gpl.html
 */

/*!
  \file qmminibuffer.cpp
  Definition of QmMiniBuffer which provides a statusbar and search functionality.
*/

/*!
  \class QmMiniBuffer qmminibuffer.h
  \brief Echo area/mini buffer
*/

#include "qmminibuffer.h"

#include "qmmainwindow.h"
#include "qmplaylistitem.h"

#include <qapplication.h>
#include <qlabel.h>
#include <qlayout.h>
#include <qlineedit.h>
#include <qprogressbar.h>
#include <qwidgetstack.h>

QmMiniBuffer::QmMiniBuffer(
    QmMainWindow *parent)
    : QToolBar(parent),
      m_pHadFocus(0)
{
	m_pStack = new QWidgetStack(this);

	m_pMessage = new QLabel(tr("Ready?"), m_pStack);
	m_pStack->addWidget(m_pMessage, 0);

    m_pSearch = new QWidget(m_pStack);
    QHBoxLayout *box = new QHBoxLayout(m_pSearch, 2);
    QLabel *l = new QLabel(tr("Search:"), m_pSearch);
	m_pField = new QmLineEdit(this, m_pSearch);
    connect(m_pField, SIGNAL(textChanged(const QString&)),
            this, SIGNAL(search(const QString&)));
    connect(m_pField, SIGNAL(returnPressed()),
            this, SLOT(returnPressed()));

    box->addWidget(l);
    box->addWidget(m_pField, 2);
	m_pStack->addWidget(m_pSearch, 1);

    m_pProgress = new QWidget(m_pStack);
    QHBoxLayout *box2 = new QHBoxLayout(m_pProgress, 2);
    QLabel *l2 = new QLabel(m_pProgress);
    m_pProgressBar = new QProgressBar(m_pProgress);
    box2->addWidget(l2, 2);
    box2->addWidget(m_pProgressBar);
    m_pStack->addWidget(m_pProgress, 2);

	m_pStack->raiseWidget(m_pMessage);
}

QmMiniBuffer::~QmMiniBuffer()
{
}


/*!
  Shows the search field.
*/

void
QmMiniBuffer::activateSearch()
{
    m_pHadFocus = qApp->focusWidget();
    m_pField->selectAll();
    m_pStack->raiseWidget(m_pSearch);
    m_pField->setFocus();
}


/*!
  Hides the search field.
*/

void
QmMiniBuffer::deactivateSearch()
{
    m_pStack->raiseWidget(m_pMessage);
    m_pField->clearFocus();
    if(m_pHadFocus)
        m_pHadFocus->setFocus();
    QmPlayListItem::setMatchItem(0);
}


/*!
  Emits the search string again (next match).
 */

void
QmMiniBuffer::returnPressed()
{
    // The signature of the signal is search(const QString&), while QLineEdit::text()
    // returns a QString object (not a reference). Still, this works:
    emit search(m_pField->text());
}


/*!
  Shows the message \a msg.
*/

void
QmMiniBuffer::message(
    const QString &msg,
    int /*msec*/ )
{
	m_pMessage->setText(msg);
}


/*!
  Clears the message field.
*/

void
QmMiniBuffer::clear()
{
	m_pMessage->clear();
}

QmMiniBuffer::QmLineEdit::QmLineEdit(QmMiniBuffer *buf, QWidget *parent, const char *name)
	: QLineEdit(parent, name),
	  m_pBuf(buf)
{

}

void
QmMiniBuffer::QmLineEdit::keyPressEvent (QKeyEvent * e)
{
	if ( (e->key()==Key_G && e->state()==ControlButton) || (e->key()==Key_Escape))
		m_pBuf->deactivateSearch();
	else
		QLineEdit::keyPressEvent(e);
}