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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;
imageFormats = LUtils::imageExtensions(false); //lowercase suffixes
connect(this, SIGNAL(threadDone(QString, QByteArray)), this, SLOT(futureFinished(QString, QByteArray)), Qt::QueuedConnection); //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;
QTimer::singleShot(0, this, SLOT(loadDirectory()) );
}
}
bool Browser::showingHiddenFiles(){
return showHidden;
}
// PRIVATE
void Browser::loadItem(QString info){
//qDebug() << "LoadItem:" << info;
////FileItem item;
//itemame = info;
QByteArray bytes;
if(imageFormats.contains(info.section(".",-1).toLower()) ){
QFile file(info);
if(file.open(QIODevice::ReadOnly)){
bytes = file.readAll();
file.close();
}
/*QPixmap pix;
if(pix.load(item.info.absoluteFilePath()) ){
if(pix.height()>128){ pix = pix.scaled(128, 128, Qt::KeepAspectRatioByExpanding, Qt::SmoothTransformation); }
item.icon.addPixmap(pix);
}*/
}/*else if(item.info.isDir()){
item.icon = LXDG::findIcon("folder","inode/directory");
}
if(item.icon.isNull()){ item.icon = LXDG::findIcon(item.info.mimetype(), "unknown"); }*/
//qDebug() << " - done with item:" << info;
emit threadDone(info, bytes);
//return item;
}
// PRIVATE SLOTS
void Browser::fileChanged(QString file){
if(file.startsWith(currentDir+"/") ){
if(QFile::exists(file) ){ QtConcurrent::run(this, &Browser::loadItem, file ); } //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 ); }
}
void Browser::futureFinished(QString name, QByteArray icon){
//Note: this will be called once for every item that loads
QIcon ico;
LFileInfo info(name);
if(!icon.isEmpty()){
QPixmap pix;
if(pix.loadFromData(icon) ){ ico.addPixmap(pix); }
}else if(info.isDir()){
ico = LXDG::findIcon("folder","inode/directory");
}
if(ico.isNull()){
//qDebug() << "MimeType:" << info.fileName() << info.mimetype();
ico = LXDG::findIcon( info.iconfile(), "unknown" );
}
this->emit itemDataAvailable( ico, info );
}
// PUBLIC SLOTS
void Browser::loadDirectory(QString dir){
//qDebug() << "Load Directory" << dir;
if(dir.isEmpty()){ dir = currentDir; } //reload current directory
if(dir.isEmpty()){ return; } //nothing to do - nothing previously loaded
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());
QCoreApplication::processEvents();
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
QtConcurrent::run(this, &Browser::loadItem, path );
QCoreApplication::sendPostedEvents();
}
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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