void LyricWidget::setTime(const QTime &time) {
if (lyric.size() == 0) return;
int befind = curInd;
if (time < lyric[curInd].time) {
for (int i = curInd - 1; i >= 0; -- i) {
if (lyric[i].time <= time && lyric[i + 1].time > time) {
curInd = i;
break;
}
}
}
else {
if (curInd == lyric.size() - 2 && time >= lyric[lyric.size() - 1].time)
curInd ++;
else if (curInd < lyric.size() - 2) {
for (int i = curInd; i < lyric.size(); ++ i) {
if (lyric[i].time > time) {
curInd = i > 0 ? i - 1 : 0;
break;
}
}
}
}
if (curInd == 0 && !firstShowing) firstShowing = true;
else if (curInd == befind) return;
QPropertyAnimation *anim = new QPropertyAnimation(animWidget, "geometry");
anim->setDuration(400);
anim->setStartValue(animWidget->geometry());
int accuHeight = 0;
for (int i = 0; i < curInd; ++ i) accuHeight += heights[i];
accuHeight += heights[curInd] / 2;
accuHeight = this->height() / 2 - accuHeight;
QRect endval(0, accuHeight, animWidget->width(), animWidget->height());
anim->setEndValue(endval);
anim->setEasingCurve(QEasingCurve::OutCubic);
labels[befind]->setText(labels[befind]->text().replace("black", "grey"));
connect(anim, &QPropertyAnimation::finished, [this] () {
labels[curInd]->setText(labels[curInd]->text().replace("grey", "black"));
});
anim->start(QPropertyAnimation::DeleteWhenStopped);
}
void HorizontalSlider::scrollToIndex(int index) {
if (index == curIndex) return;
if (index > numberOfChildren() - 1) return;
this->curIndex = index;
QPropertyAnimation *anim = new QPropertyAnimation(container, "geometry");
anim->setDuration(300);
anim->setStartValue(container->geometry());
int accuwidth = 0;
for (int i = 0; i < index; ++ i) accuwidth += widths[i];
accuwidth += widths[index] / 2 - this->width() / 2;
QRect endval(-accuwidth,
container->geometry().y(),
container->geometry().width(),
container->geometry().height()
);
anim->setEndValue(endval);
anim->setEasingCurve(QEasingCurve::OutCubic);
connect(anim, &QPropertyAnimation::finished, [=] () {
emit scrollFinished();
});
anim->start(QAbstractAnimation::DeleteWhenStopped);
}
