add lumina-fm-dev to tree while I work on it

1 files changed, 161 insertions, 0 deletions

diff --git a/src-qt5/desktop-utils/lumina-fm-dev/Browser.cpp b/src-qt5/desktop-utils/lumina-fm-dev/Browser.cpp
new file mode 100644
index 00000000..f2bdc178
--- /dev/null
+++ b/src-qt5/desktop-utils/lumina-fm-dev/Browser.cpp
@@ -0,0 +1,161 @@
+//===========================================
+//  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(pix.width() > 256 || pix.height() > 256 ){
+        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() && showThumbs){
+        //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
+  }
+}