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//===========================================
// Lumina-DE source code
// Copyright (c) 2016, Ken Moore
// Available under the 3-clause BSD license
// See the LICENSE file for full details
//===========================================
#include "Browser.h"
#include <QStringList>
#include <QTimer>
#include <QtConcurrent>
#include <QDebug>
#include <LUtils.h>
Browser::Browser(QObject *parent) : QObject(parent){
watcher = new QFileSystemWatcher(this);
connect(watcher, SIGNAL(fileChanged(const QString&)), this, SLOT(fileChanged(QString)) );
connect(watcher, SIGNAL(directoryChanged(const QString&)), this, SLOT(dirChanged(QString)) );
showHidden = false;
showThumbs = false;
imageFormats = LUtils::imageExtensions(false); //lowercase suffixes
videoFormats = LUtils::videoExtensions(); //lowercase suffixes
//connect(surface, SIGNAL(frameReceived(QImage)), this, SLOT(captureFrame(QImage)));
//connect(player, &QMediaPlayer::mediaStatusChanged, this, [&]{ stopVideo(player, player->mediaStatus()); });
connect(this, SIGNAL(threadDone(QString, QImage)), this, SLOT(futureFinished(QString, QImage))); //will always be between different threads
}
Browser::~Browser(){
//watcher->deleteLater();
}
QString Browser::currentDirectory(){ return currentDir; }
void Browser::showHiddenFiles(bool show){
if(show !=showHidden){
showHidden = show;
if(!currentDir.isEmpty()){ QTimer::singleShot(0, this, SLOT(loadDirectory()) ); }
}
}
bool Browser::showingHiddenFiles(){
return showHidden;
}
void Browser::showThumbnails(bool show){
if(show != showThumbs){
showThumbs = show;
if(!currentDir.isEmpty()){ QTimer::singleShot(0, this, SLOT(loadDirectory()) ); }
}
}
bool Browser::showingThumbnails(){
return showThumbs;
}
// PRIVATE
void Browser::loadItem(QString info, Browser *obj){
QImage pix;
if(imageFormats.contains(info.section(".",-1).toLower()) ){
QFile file(info);
if(file.open(QIODevice::ReadOnly)){
QByteArray bytes = file.readAll();
file.close();
pix.loadFromData(bytes);
if(pix.width() > 256 || pix.height() > 256 ){
pix = pix.scaled(256,256, Qt::KeepAspectRatio);
}
}
}
qDebug() << " - done with item:" << info;
obj->emit threadDone(info, pix);
}
QIcon* Browser::loadIcon(QString icon){
if(!mimeIcons.contains(icon)){
mimeIcons.insert(icon, LXDG::findIcon(icon, "unknown"));
}
return &mimeIcons[icon];
}
// PRIVATE SLOTS
void Browser::fileChanged(QString file){
if(file.startsWith(currentDir+"/") ){
if(QFile::exists(file) ){ QtConcurrent::run(this, &Browser::loadItem, file, this); } //file modified but not removed
else{ QTimer::singleShot(0, this, SLOT(loadDirectory()) ); } //file removed - need to update entire dir
}else if(file==currentDir){ QTimer::singleShot(0, this, SLOT(loadDirectory()) ); }
}
void Browser::dirChanged(QString dir){
if(dir==currentDir){ QTimer::singleShot(500, this, SLOT(loadDirectory()) ); }
else if(dir.startsWith(currentDir)){ QtConcurrent::run(this, &Browser::loadItem, dir, this ); }
}
void Browser::stopVideo(QMediaPlayer *player, QMediaPlayer::MediaStatus status) {
//qDebug() << status;
if(status == QMediaPlayer::BufferedMedia) {
qDebug() << "stoppingVideo" << player << player->currentMedia().canonicalUrl();
player->setPosition(player->duration() / 2);
player->pause();
}
}
void Browser::captureFrame(QPixmap pix, QIcon *ico) {
qDebug() << "grabbing frame";
*ico = pix.scaledToHeight(64);
emit frameChanged();
}
void Browser::futureFinished(QString name, QImage icon){
//Note: this will be called once for every item that loads
QIcon *ico = new QIcon();
LFileInfo *info = new LFileInfo(name);
if(!icon.isNull() && showThumbs){
QPixmap pix = QPixmap::fromImage(icon);
ico->addPixmap(pix);
}
if(ico->isNull()){
if(videoFormats.contains(name.section(".",-1).toLower())) {
qDebug() << "Loading Video for" << name;
//qDebug() << "VIDEO" << info;
QMediaPlayer *player = new QMediaPlayer(0, QMediaPlayer::VideoSurface);
qDebug() << " - created player";
LVideoSurface *surface = new LVideoSurface();
qDebug() << " - Create objects";
connect(surface, &LVideoSurface::frameReceived, this, [&] (QPixmap pix) { captureFrame(pix, ico); });
connect(player, &QMediaPlayer::mediaStatusChanged, this, [&]{ stopVideo(player, player->mediaStatus()); });
player->setVideoOutput(surface);
player->setMuted(true);
player->setMedia(QUrl("file://"+info->absoluteFilePath()));
player->play();
player->pause();
QEventLoop loop;
connect(this, SIGNAL(frameChanged()), &loop, SLOT(quit()));
loop.exec();
ico->addPixmap(videoFrame);
//ico = loadIcon(info->iconfile());
delete player;
delete surface;
}else {
ico = loadIcon(info->iconfile());
}
}
this->emit itemDataAvailable( *ico, info);
//qDebug() << " -- done:" << name;
}
// PUBLIC SLOTS
void Browser::loadDirectory(QString dir){
if(dir.isEmpty()){ dir = currentDir; } //reload current directory
if(dir.isEmpty()){ return; } //nothing to do - nothing previously loaded
//qDebug() << "Load Directory" << dir;
if(currentDir != dir){ //let the main widget know to clear all current items (completely different dir)
oldFiles.clear();
emit clearItems();
}
currentDir = dir; //save this for later
//clean up the watcher first
QStringList watched; watched << watcher->files() << watcher->directories();
if(!watched.isEmpty()){ watcher->removePaths(watched); }
QStringList old = oldFiles; //copy this over for the moment (both lists will change in a moment)
oldFiles.clear(); //get ready for re-creating this list
// read the given directory
QDir directory(dir);
if(directory.exists()){
QStringList files;
if(showHidden){ files = directory.entryList( QDir::Dirs | QDir::Files | QDir::Hidden | QDir::NoDotAndDotDot, QDir::NoSort); }
else{ files = directory.entryList( QDir::Dirs | QDir::Files | QDir::NoDotAndDotDot, QDir::NoSort); }
emit itemsLoading(files.length());
for(int i=0; i<files.length(); i++){
watcher->addPath(directory.absoluteFilePath(files[i]));
//qDebug() << "Future Starting:" << files[i];
QString path = directory.absoluteFilePath(files[i]);
if(old.contains(path)){ old.removeAll(path); }
oldFiles << path; //add to list for next time
//if(showThumbs && imageFormats.contains(path.section(".",-1).toLower())){
QtConcurrent::run(this, &Browser::loadItem, path, this);
/*}else{
//No special icon loading - just skip the file read step
futureFinished(path, QImage()); //loadItem(path, this);
}*/
}
watcher->addPath(directory.absolutePath());
if(!old.isEmpty()){
old.removeAll(directory.absolutePath());
for(int i=0; i<old.length(); i++){
emit itemRemoved(old[i]);
}
}
}else{
emit itemsLoading(0); //nothing to load
}
}
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