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#include <QStylePainter>
#include <QStyleOption>
#include <QSize>
#include <QApplication>
#include "widget/wstarrating.h"
WStarRating::WStarRating(QString group, QWidget* pParent)
: WWidget(pParent),
m_starRating(0, 5),
m_group(group),
m_focused(false) {
// Controls to change the star rating with controllers
m_pStarsUp = std::make_unique<ControlPushButton>(ConfigKey(group, "stars_up"));
m_pStarsDown = std::make_unique<ControlPushButton>(ConfigKey(group, "stars_down"));
connect(m_pStarsUp.get(), SIGNAL(valueChanged(double)), this, SLOT(slotStarsUp(double)));
connect(m_pStarsDown.get(), SIGNAL(valueChanged(double)), this, SLOT(slotStarsDown(double)));
}
void WStarRating::setup(const QDomNode& node, const SkinContext& context) {
Q_UNUSED(node);
Q_UNUSED(context);
setMouseTracking(true);
setFocusPolicy(Qt::NoFocus);
}
QSize WStarRating::sizeHint() const {
QStyleOption option;
option.initFrom(this);
QSize widgetSize = style()->sizeFromContents(QStyle::CT_PushButton, &option,
m_starRating.sizeHint(), this);
m_contentRect.setRect(
(widgetSize.width() - m_starRating.sizeHint().width()) / 2,
(widgetSize.height() - m_starRating.sizeHint().height()) / 2,
m_starRating.sizeHint().width(),
m_starRating.sizeHint().height()
);
return widgetSize;
}
void WStarRating::slotTrackLoaded(TrackPointer pTrack) {
if (m_pCurrentTrack != pTrack) {
if (m_pCurrentTrack) {
disconnect(m_pCurrentTrack.get(), nullptr, this, nullptr);
m_pCurrentTrack.reset();
}
if (pTrack) {
connect(pTrack.get(),
&Track::changed,
this,
&WStarRating::slotTrackChanged);
m_pCurrentTrack = pTrack;
}
updateRating();
}
}
void WStarRating::updateRating() {
if (m_pCurrentTrack) {
m_starRating.setStarCount(m_pCurrentTrack->getRating());
} else {
m_starRating.setStarCount(0);
}
update();
}
void WStarRating::slotTrackChanged(TrackId trackId) {
Q_UNUSED(trackId);
updateRating();
}
void WStarRating::paintEvent(QPaintEvent * /*unused*/) {
QStyleOption option;
option.initFrom(this);
QStylePainter painter(this);
painter.setBrush(option.palette.text());
painter.drawPrimitive(QStyle::PE_Widget, option);
m_starRating.paint(&painter, m_contentRect);
}
void WStarRating::mouseMoveEvent(QMouseEvent *event) {
if (!m_pCurrentTrack) {
return;
}
m_focused = true;
int star = starAtPosition(event->x());
if (star != m_starRating.starCount() && star != -1) {
m_starRating.setStarCount(star);
update();
}
}
void WStarRating::slotStarsUp(double v) {
if (!m_pCurrentTrack) {
return;
}
if (v > 0 && m_starRating.starCount() < m_starRating.maxStarCount()) {
int star = m_starRating.starCount() + 1;
m_starRating.setStarCount(star);
update();
m_pCurrentTrack->setRating(star);
}
}
void WStarRating::slotStarsDown(double v) {
if (!m_pCurrentTrack) {
return;
}
if (v > 0 && m_starRating.starCount() > 0) {
int star = m_starRating.starCount() - 1;
m_starRating.setStarCount(star);
update();
m_pCurrentTrack->setRating(star);
}
}
void WStarRating::leaveEvent(QEvent* /*unused*/) {
m_focused = false;
updateRating();
}
// The method uses basic linear algebra to find out which star is under the cursor.
int WStarRating::starAtPosition(int x) {
// If the mouse is very close to the left edge, set 0 stars.
if (x < m_starRating.sizeHint().width() * 0.05) {
return 0;
}
int star = (x / (m_starRating.sizeHint().width() / m_starRating.maxStarCount())) + 1;
if (star <= 0 || star > m_starRating.maxStarCount()) {
return 0;
}
return star;
}
void WStarRating::mouseReleaseEvent(QMouseEvent* /*unused*/) {
if (!m_pCurrentTrack) {
return;
}
m_pCurrentTrack->setRating(m_starRating.starCount());
}
void WStarRating::fillDebugTooltip(QStringList* debug) {
WWidget::fillDebugTooltip(debug);
QString currentRating = "-";
QString maximumRating = QString::number(m_starRating.maxStarCount());
if (m_pCurrentTrack) {
currentRating.setNum(m_pCurrentTrack->getRating());
}
*debug << QString("Rating: %1/%2").arg(currentRating, maximumRating);
}
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