1 files changed, 140 insertions, 0 deletions
diff --git a/src-qt5/desktop-utils/lumina-fm/Browser.cpp b/src-qt5/desktop-utils/lumina-fm/Browser.cpp
new file mode 100644
index 00000000..5b84e2e7
--- /dev/null
+++ b/src-qt5/desktop-utils/lumina-fm/Browser.cpp
@@ -0,0 +1,140 @@
+//===========================================
+//  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
+  }
+}