Chris@929: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@929: 
Chris@929: /*
Chris@929:     Sonic Visualiser
Chris@929:     An audio file viewer and annotation editor.
Chris@929:     Centre for Digital Music, Queen Mary, University of London.
Chris@929:     
Chris@929:     This program is free software; you can redistribute it and/or
Chris@929:     modify it under the terms of the GNU General Public License as
Chris@929:     published by the Free Software Foundation; either version 2 of the
Chris@929:     License, or (at your option) any later version.  See the file
Chris@929:     COPYING included with this distribution for more information.
Chris@929: */
Chris@929: 
Chris@929: #include "LevelPanToolButton.h"
Chris@929: #include "LevelPanWidget.h"
Chris@929: 
Chris@929: #include <QMenu>
Chris@929: #include <QWidgetAction>
Chris@929: #include <QImage>
Chris@929: 
Chris@929: #include <iostream>
Chris@929: using std::cerr;
Chris@929: using std::endl;
Chris@929: 
Chris@929: LevelPanToolButton::LevelPanToolButton(QWidget *parent) :
Chris@929:     QToolButton(parent),
Chris@930:     m_pixels(32),
Chris@930:     m_muted(false),
Chris@930:     m_savedLevel(1.f)
Chris@929: {
Chris@929:     m_lpw = new LevelPanWidget();
Chris@929: 
Chris@929:     connect(m_lpw, SIGNAL(levelChanged(float)), this, SIGNAL(levelChanged(float)));
Chris@930:     connect(m_lpw, SIGNAL(levelChanged(float)), this, SLOT(selfLevelChanged(float)));
Chris@929: 
Chris@929:     connect(m_lpw, SIGNAL(panChanged(float)), this, SIGNAL(panChanged(float)));
Chris@932:     connect(m_lpw, SIGNAL(panChanged(float)), this, SLOT(update()));
Chris@930: 
Chris@930:     connect(this, SIGNAL(clicked(bool)), this, SLOT(selfClicked()));
Chris@929:     
Chris@929:     QMenu *menu = new QMenu();
Chris@929:     QWidgetAction *wa = new QWidgetAction(menu);
Chris@929:     wa->setDefaultWidget(m_lpw);
Chris@929:     menu->addAction(wa);
Chris@929: 
Chris@929:     setPopupMode(MenuButtonPopup);
Chris@929:     setMenu(menu);
Chris@929: 
Chris@932:     setImageSize(m_pixels);
Chris@929: }
Chris@929: 
Chris@929: LevelPanToolButton::~LevelPanToolButton()
Chris@929: {
Chris@929: }
Chris@929: 
Chris@929: float
Chris@929: LevelPanToolButton::getLevel() const
Chris@929: {
Chris@929:     return m_lpw->getLevel();
Chris@929: }
Chris@929: 
Chris@929: float
Chris@929: LevelPanToolButton::getPan() const
Chris@929: {
Chris@929:     return m_lpw->getPan();
Chris@929: }
Chris@929: 
Chris@929: void
Chris@929: LevelPanToolButton::setImageSize(int pixels)
Chris@929: {
Chris@929:     m_pixels = pixels;
Chris@932: 
Chris@932:     QPixmap px(m_pixels, m_pixels);
Chris@932:     px.fill(Qt::transparent);
Chris@932:     setIcon(px);
Chris@932: 
Chris@933:     m_lpw->setFixedWidth(m_pixels * 3);
Chris@933:     m_lpw->setFixedHeight(m_pixels * 3);
Chris@929: }
Chris@929: 
Chris@929: void
Chris@929: LevelPanToolButton::setLevel(float level)
Chris@929: {
Chris@929:     m_lpw->setLevel(level);
Chris@932:     update();
Chris@929: }
Chris@929: 
Chris@929: void
Chris@929: LevelPanToolButton::setPan(float pan)
Chris@929: {
Chris@929:     m_lpw->setPan(pan);
Chris@932:     update();
Chris@930: }
Chris@930: 
Chris@930: void
Chris@933: LevelPanToolButton::setEnabled(bool enabled)
Chris@933: {
Chris@933:     m_lpw->setEnabled(enabled);
Chris@933:     QToolButton::setEnabled(enabled);
Chris@933: }
Chris@933: 
Chris@933: void
Chris@930: LevelPanToolButton::selfLevelChanged(float level)
Chris@930: {
Chris@930:     if (level > 0.f) {
Chris@930: 	m_muted = false;
Chris@930:     } else {
Chris@930: 	m_muted = true;
Chris@930: 	m_savedLevel = 1.f;
Chris@930:     }
Chris@932:     update();
Chris@930: }
Chris@930: 
Chris@930: void
Chris@930: LevelPanToolButton::selfClicked()
Chris@930: {
Chris@930:     cerr << "selfClicked" << endl;
Chris@930:     
Chris@930:     if (m_muted) {
Chris@930: 	m_muted = false;
Chris@930: 	m_lpw->setLevel(m_savedLevel);
Chris@931: 	emit levelChanged(m_savedLevel);
Chris@930:     } else {
Chris@930: 	m_savedLevel = m_lpw->getLevel();
Chris@930: 	m_muted = true;
Chris@930: 	m_lpw->setLevel(0.f);
Chris@931: 	emit levelChanged(0.f);
Chris@930:     }
Chris@932:     update();
Chris@929: }
Chris@929: 
Chris@929: void
Chris@932: LevelPanToolButton::paintEvent(QPaintEvent *e)
Chris@929: {
Chris@932:     QToolButton::paintEvent(e);
Chris@934:     if (m_pixels >= height()) {
Chris@934:         setImageSize(height()-1);
Chris@934:     }
Chris@932:     double margin = (double(height()) - m_pixels) / 2.0;
Chris@932:     m_lpw->renderTo(this, QRectF(margin, margin, m_pixels, m_pixels), false);
Chris@929: }
Chris@929: 
Chris@932: