Files
cantata/widgets/nowplayingwidget.cpp
2017-04-08 10:35:31 +01:00

458 lines
14 KiB
C++

/*
* Cantata
*
* Copyright (c) 2011-2017 Craig Drummond <craig.p.drummond@gmail.com>
*
* ----
*
* 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 the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "nowplayingwidget.h"
#include "ratingwidget.h"
#include "volumeslider.h"
#include "mpd-interface/song.h"
#include "gui/settings.h"
#include "mpd-interface/mpdconnection.h"
#include "models/playqueuemodel.h"
#include "support/utils.h"
#ifdef Q_OS_MAC
#include "support/osxstyle.h"
#endif
#include <QLabel>
#include <QBoxLayout>
#include <QProxyStyle>
#include <QTimer>
#include <QApplication>
#include <QMouseEvent>
#include <QSlider>
#include <QToolTip>
#include <QSpacerItem>
class PosSliderProxyStyle : public QProxyStyle
{
public:
PosSliderProxyStyle()
: QProxyStyle()
{
setBaseStyle(qApp->style());
}
int styleHint(StyleHint stylehint, const QStyleOption *opt, const QWidget *widget, QStyleHintReturn *returnData) const
{
if (QStyle::SH_Slider_AbsoluteSetButtons==stylehint) {
return Qt::LeftButton|QProxyStyle::styleHint(stylehint, opt, widget, returnData);
} else {
return QProxyStyle::styleHint(stylehint, opt, widget, returnData);
}
}
};
class TimeLabel : public QLabel
{
public:
TimeLabel(QWidget *p, QSlider *s)
: QLabel(p)
, slider(s)
, pressed(false)
, showRemaining(Settings::self()->showTimeRemaining())
{
setAttribute(Qt::WA_Hover, true);
setAlignment((isRightToLeft() ? Qt::AlignLeft : Qt::AlignRight)|Qt::AlignVCenter);
// For some reason setting this here does not work!
// setStyleSheet(QLatin1String("QLabel:hover {color:palette(highlight);}"));
}
void setRange(int min, int max)
{
QLabel::setEnabled(min!=max);
if (!isEnabled()) {
setText(QLatin1String(" "));
}
}
void updateTime()
{
if (isEnabled()) {
int value=showRemaining ? slider->maximum()-slider->value() : slider->maximum();
QString prefix=showRemaining && value ? QLatin1String("-") : QString();
if (isRightToLeft()) {
setText(QString("%1 / %2").arg(prefix+Utils::formatTime(value), Utils::formatTime(slider->value())));
} else {
setText(QString("%1 / %2").arg(Utils::formatTime(slider->value()), prefix+Utils::formatTime(value)));
}
} else {
setText(QLatin1String(" "));
}
}
void saveConfig()
{
Settings::self()->saveShowTimeRemaining(showRemaining);
}
bool event(QEvent *e)
{
switch (e->type()) {
case QEvent::MouseButtonPress:
if (isEnabled() && Qt::NoModifier==static_cast<QMouseEvent *>(e)->modifiers() && Qt::LeftButton==static_cast<QMouseEvent *>(e)->button()) {
pressed=true;
}
break;
case QEvent::MouseButtonRelease:
if (isEnabled() && pressed) {
showRemaining=!showRemaining;
updateTime();
}
pressed=false;
break;
case QEvent::HoverEnter:
if (isEnabled()) {
#ifdef Q_OS_MAC
setStyleSheet(QString("QLabel{color:%1;}").arg(OSXStyle::self()->viewPalette().highlight().color().name()));
#else
setStyleSheet(QLatin1String("QLabel{color:palette(highlight);}"));
#endif
}
break;
case QEvent::HoverLeave:
if (isEnabled()) {
setStyleSheet(QString("QLabel{color:%1;}").arg(((NowPlayingWidget *)parentWidget())->textColor().name()));
}
default:
break;
}
return QLabel::event(e);
}
protected:
QSlider *slider;
bool pressed;
bool showRemaining;
};
PosSlider::PosSlider(QWidget *p)
: QSlider(p)
{
setPageStep(0);
setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Fixed);
setFocusPolicy(Qt::NoFocus);
setStyle(new PosSliderProxyStyle());
int h=qMax((int)(fontMetrics().height()*0.5), 8);
setMinimumHeight(h);
setMaximumHeight(h);
updateStyleSheet();
setMouseTracking(true);
}
void PosSlider::updateStyleSheet()
{
int lineWidth=maximumHeight()>12 ? 2 : 1;
QString boderFormat=QLatin1String("QSlider::groove:horizontal { border: %1px solid rgba(%2, %3, %4, %5); "
"background: solid rgba(%2, %3, %4, %6); "
"border-radius: %7px } ");
QString fillFormat=QLatin1String("QSlider::")+QLatin1String(isRightToLeft() ? "add" : "sub")+
QLatin1String("-page:horizontal {border: %1px solid rgb(%3, %4, %5); "
"background: solid rgb(%3, %4, %5); "
"border-radius: %1px; margin: %2px} ")+
QLatin1String("QSlider::")+QLatin1String(isRightToLeft() ? "add" : "sub")+
QLatin1String("-page:horizontal:disabled {border: 0px; background: solid rgba(0, 0, 0, 0)}");
QLabel lbl(parentWidget());
lbl.ensurePolished();
QColor textColor=lbl.palette().color(QPalette::Active, QPalette::Text);
#ifdef Q_OS_MAC
QColor fillColor=OSXStyle::self()->viewPalette().highlight().color();
#else
QColor fillColor=lbl.palette().highlight().color();
#endif
int alpha=textColor.value()<32 ? 96 : 64;
setStyleSheet(boderFormat.arg(lineWidth).arg(textColor.red()).arg(textColor.green()).arg(textColor.blue()).arg(alpha)
.arg(alpha/4).arg(lineWidth*2)+
fillFormat.arg(lineWidth).arg(lineWidth*2).arg(fillColor.red()).arg(fillColor.green()).arg(fillColor.blue()));
}
void PosSlider::mouseMoveEvent(QMouseEvent *e)
{
if (maximum()!=minimum()) {
qreal pc = (qreal)e->pos().x()/(qreal)width();
QPoint pos(e->pos().x(), height());
QToolTip::showText(mapToGlobal(pos), Utils::formatTime(maximum()*pc), this, rect());
}
QSlider::mouseMoveEvent(e);
}
void PosSlider::wheelEvent(QWheelEvent *ev)
{
if (!isEnabled()) {
return;
}
static const int constStep=5;
int numDegrees = ev->delta() / 8;
int numSteps = numDegrees / 15;
int val=value();
if (numSteps > 0) {
int max=maximum();
if (val!=max) {
for (int i = 0; i < numSteps; ++i) {
val+=constStep;
if (val>max) {
val=max;
break;
}
}
}
} else {
int min=minimum();
if (val!=min) {
for (int i = 0; i > numSteps; --i) {
val-=constStep;
if (val<min) {
val=min;
break;
}
}
}
}
if (val!=value()) {
setValue(val);
emit positionSet();
}
}
void PosSlider::setRange(int min, int max)
{
bool active=min!=max;
QSlider::setRange(min, max);
setValue(min);
if (!active) {
setToolTip(QString());
}
setEnabled(active);
}
NowPlayingWidget::NowPlayingWidget(QWidget *p)
: QWidget(p)
, shown(false)
, timer(0)
, lastVal(0)
, pollCount(0)
, pollMpd(Settings::self()->mpdPoll())
{
track=new SqueezedTextLabel(this);
artist=new SqueezedTextLabel(this);
slider=new PosSlider(this);
time=new TimeLabel(this, slider);
ratingWidget=new RatingWidget(this);
QFont f=track->font();
QFont small=Utils::smallFont(f);
f.setBold(true);
track->setFont(f);
artist->setFont(small);
time->setFont(small);
slider->setOrientation(Qt::Horizontal);
QBoxLayout *layout=new QBoxLayout(QBoxLayout::TopToBottom, this);
QBoxLayout *topLayout=new QBoxLayout(QBoxLayout::LeftToRight, 0);
QBoxLayout *botLayout=new QBoxLayout(QBoxLayout::LeftToRight, 0);
int space=Utils::layoutSpacing(this);
int pad=qMax(space, Utils::scaleForDpi(8));
#ifdef Q_OS_MAC
layout->setContentsMargins(pad, 0, pad, 0);
#else
layout->setContentsMargins(pad, space, pad, space);
#endif
layout->setSpacing(space/2);
topLayout->setMargin(0);
botLayout->setMargin(0);
topLayout->setSpacing(space/2);
botLayout->setSpacing(space/2);
topLayout->addWidget(track);
topLayout->addWidget(ratingWidget);
layout->addLayout(topLayout);
botLayout->addWidget(artist);
botLayout->addWidget(time);
layout->addLayout(botLayout);
layout->addItem(new QSpacerItem(1, space/4, QSizePolicy::Fixed, QSizePolicy::Fixed));
layout->addWidget(slider);
connect(slider, SIGNAL(sliderPressed()), this, SLOT(pressed()));
connect(slider, SIGNAL(sliderReleased()), this, SLOT(released()));
connect(slider, SIGNAL(positionSet()), this, SIGNAL(sliderReleased()));
connect(slider, SIGNAL(valueChanged(int)), this, SLOT(updateTimes()));
if (pollMpd>0) {
connect(this, SIGNAL(mpdPoll()), MPDConnection::self(), SLOT(getStatus()));
}
setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
clearTimes();
update(Song());
connect(ratingWidget, SIGNAL(valueChanged(int)), SLOT(setRating(int)));
connect(this, SIGNAL(setRating(QString,quint8)), MPDConnection::self(), SLOT(setRating(QString,quint8)));
connect(PlayQueueModel::self(), SIGNAL(currentSongRating(QString,quint8)), this, SLOT(rating(QString,quint8)));
}
void NowPlayingWidget::update(const Song &song)
{
QString name=song.name();
currentSongFile=song.file;
ratingWidget->setEnabled(!song.isEmpty() && Song::Standard==song.type);
ratingWidget->setValue(0);
if (song.isEmpty()) {
track->setText(" ");
artist->setText(" ");
} else if (song.isStream() && !song.isCantataStream() && !song.isCdda() && !song.isDlnaStream()) {
track->setText(name.isEmpty() ? Song::unknown() : name);
if (song.artist.isEmpty() && song.title.isEmpty() && !name.isEmpty()) {
artist->setText(tr("(Stream)"));
} else {
artist->setText(song.artist.isEmpty() ? song.title : song.artistSong());
}
} else {
if (song.title.isEmpty() && song.artist.isEmpty() && (!name.isEmpty() || !song.file.isEmpty())) {
track->setText(name.isEmpty() ? song.file : name);
} else {
track->setText(song.title);
}
if (song.album.isEmpty() && song.artist.isEmpty()) {
artist->setText(track->fullText().isEmpty() ? QString() : Song::unknown());
} else if (song.album.isEmpty()) {
artist->setText(song.artist);
} else {
// Artist here is always artist, and not album artist or composer
artist->setText(song.artist+QLatin1String(" - ")+song.displayAlbum(false));
}
}
}
void NowPlayingWidget::startTimer()
{
if (!timer) {
timer=new QTimer(this);
timer->setInterval(1000);
connect(timer, SIGNAL(timeout()), this, SLOT(updatePos()));
}
startTime.restart();
lastVal=value();
timer->start();
pollCount=0;
}
void NowPlayingWidget::stopTimer()
{
if (timer) {
timer->stop();
}
pollCount=0;
}
void NowPlayingWidget::setValue(int v)
{
startTime.restart();
lastVal=v;
slider->setValue(v);
updateTimes();
}
void NowPlayingWidget::setRange(int min, int max)
{
slider->setRange(min, max);
time->setRange(min, max);
updateTimes();
}
void NowPlayingWidget::clearTimes()
{
stopTimer();
lastVal=0;
slider->setRange(0, 0);
time->setRange(0, 0);
time->updateTime();
}
int NowPlayingWidget::value() const
{
return slider->value();
}
void NowPlayingWidget::readConfig()
{
ratingWidget->setVisible(Settings::self()->showRatingWidget());
}
void NowPlayingWidget::saveConfig()
{
time->saveConfig();
}
void NowPlayingWidget::rating(const QString &file, quint8 r)
{
if (file==currentSongFile) {
ratingWidget->setValue(r);
}
}
void NowPlayingWidget::updateTimes()
{
if (slider->value()<172800 && slider->value() != slider->maximum()) {
time->updateTime();
}
}
void NowPlayingWidget::updatePos()
{
int elapsed=(startTime.elapsed()/1000.0)+0.5;
slider->setValue(lastVal+elapsed);
MPDStatus::self()->setGuessedElapsed(lastVal+elapsed);
if (pollMpd>0) {
if (++pollCount>=pollMpd) {
pollCount=0;
emit mpdPoll();
}
}
}
void NowPlayingWidget::pressed()
{
if (timer) {
timer->stop();
}
}
void NowPlayingWidget::released()
{
if (timer) {
timer->start();
}
emit sliderReleased();
}
void NowPlayingWidget::setRating(int v)
{
emit setRating(currentSongFile, v);
}
void NowPlayingWidget::showEvent(QShowEvent *e)
{
QWidget::showEvent(e);
if (!shown) {
slider->updateStyleSheet();
shown=true;
ratingWidget->setColor(VolumeSlider::clampColor(track->palette().text().color()));
}
}