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#include "ScaleLabel.h"
#include <QResizeEvent>
#include <iostream>
// Taken from https://github.com/ModOrganizer2/modorganizer-installer_fomod/blob/master/src/scalelabel.h
static bool isResourceMovie(const QString& path)
{
const auto formats = QMovie::supportedFormats();
return std::ranges::any_of(formats, [&path](const QByteArray& format) {
return path.endsWith("." + QString::fromUtf8(format));
});
}
void ScaleLabel::setScalableResource(const QString& path)
{
if (const auto m = movie()) {
setMovie(nullptr);
delete m;
mOriginalMovieSize = QSize();
}
if (!pixmap().isNull()) {
setPixmap(QPixmap());
mUnscaledImage = QImage();
}
if (path.isEmpty()) {
return;
}
if (isResourceMovie(path)) {
setScalableMovie(path);
} else {
setScalableImage(path);
}
}
void ScaleLabel::setStatic(const bool isStatic)
{
misStatic = isStatic;
if (const auto m = movie()) {
if (isStatic) {
m->stop();
} else {
m->start();
}
}
}
void ScaleLabel::setScalableMovie(const QString& path)
{
const auto m = new QMovie(path);
if (!m->isValid()) {
qWarning(">%s< is an invalid movie. Reason: %s", qUtf8Printable(path),
m->lastErrorString().toStdString().c_str());
delete m;
return;
}
m->setParent(this);
setMovie(m);
m->start();
m->stop();
mOriginalMovieSize = m->currentImage().size();
m->setScaledSize(mOriginalMovieSize.scaled(size(), Qt::KeepAspectRatio));
if (!misStatic) {
m->start();
}
mHasResource = true;
}
void ScaleLabel::setScalableImage(const QString& path)
{
if (const QImage image(path); image.isNull()) {
qWarning(">%s< is a null image", qUtf8Printable(path));
} else {
mUnscaledImage = image;
setPixmap(QPixmap::fromImage(image).scaled(size(), Qt::KeepAspectRatio, Qt::SmoothTransformation));
mHasResource = true;
}
}
void ScaleLabel::resizeEvent(QResizeEvent* event)
{
if (const auto m = movie()) {
m->stop();
m->setScaledSize(mOriginalMovieSize.scaled(event->size(), Qt::KeepAspectRatio));
m->start();
// We can't just skip the start() above since that is what triggers the label to
// resize the movie The only way to resize the movie but keep it paused is to start
// and then re-stop it
if (misStatic) {
m->stop();
}
}
if (const auto p = pixmap(); !p.isNull()) {
setPixmap(
QPixmap::fromImage(mUnscaledImage).scaled(event->size(), Qt::KeepAspectRatio, Qt::SmoothTransformation));
}
}
void ScaleLabel::showEvent(QShowEvent* event)
{
QLabel::showEvent(event);
if (const auto m = movie()) {
m->stop();
m->setScaledSize(mOriginalMovieSize.scaled(size(), Qt::KeepAspectRatio));
m->start();
if (misStatic) {
m->stop();
}
}
if (const auto p = pixmap(); !p.isNull()) {
setPixmap(QPixmap::fromImage(mUnscaledImage).scaled(size(), Qt::KeepAspectRatio, Qt::SmoothTransformation));
}
}
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