//=========================================== // 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 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(bytes.size() > (512*1024) ){ //more than 512 KB pix = pix.scaled(256,256, Qt::KeepAspectRatio, Qt::SmoothTransformation); } } } //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::futureFinished(QString name, QImage icon){ //Note: this will be called once for every item that loads QIcon ico; //LFileInfo info(name); LFileInfo *info = new LFileInfo(name); if(!icon.isNull()){ //qDebug() << " -- Data:"; QPixmap pix = QPixmap::fromImage(icon); ico.addPixmap(pix); }else if(info->isDir()){ //qDebug() << " -- Folder:"; ico = loadIcon("folder"); } if(ico.isNull()){ //qDebug() << " -- MimeType:" << info.fileName() << info.mimetype(); 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 } }