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Diffstat (limited to 'lumina-fm/DirData.h')
| -rw-r--r-- | lumina-fm/DirData.h | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/lumina-fm/DirData.h b/lumina-fm/DirData.h new file mode 100644 index 00000000..2d3ce6b3 --- /dev/null +++ b/lumina-fm/DirData.h @@ -0,0 +1,184 @@ +//=========================================== +// Lumina-DE source code +// Copyright (c) 2015, Ken Moore +// Available under the 3-clause BSD license +// See the LICENSE file for full details +//=========================================== +// This is the backend classes for fetching directory information/contents +//=========================================== +#ifndef _LUMINA_FM_BACKGROUND_DATA_CLASSES_H +#define _LUMINA_FM_BACKGROUND_DATA_CLASSES_H + +#include <QObject> +#include <QList> +#include <QString> +#include <QFileInfo> +#include <QDir> + +#include <LuminaXDG.h> +#include <LuminaUtils.h> + +//Need some extra information not usually available by a QFileInfo +class LFileInfo : public QFileInfo{ +private: + QString mime, icon; + XDGDesktop desk; + + void loadExtraInfo(){ + //Now load the extra information + if(this->isDir()){ + mime = "inode/directory"; + //Special directory icons + QString name = this->fileName().toLower(); + if(name=="desktop"){ icon = "user-desktop"; } + else if(name=="tmp"){ icon = "folder-temp"; } + else if(name=="video" || name=="videos"){ icon = "folder-video"; } + else if(name=="music" || name=="audio"){ icon = "folder-sound"; } + else if(name=="projects" || name=="devel"){ icon = "folder-development"; } + else if(name=="notes"){ icon = "folder-txt"; } + else if(name=="downloads"){ icon = "folder-downloads"; } + else if(name=="documents"){ icon = "folder-documents"; } + else if(name=="images" || name=="pictures"){ icon = "folder-image"; } + else if( !this->isReadable() ){ icon = "folder-locked"; } + }else if( this->suffix()=="desktop"){ + mime = "application/x-desktop"; + icon = "application-x-desktop"; //default value + bool ok = false; + desk = LXDG::loadDesktopFile(this->absoluteFilePath(), ok); + if(ok){ + //use the specific desktop file info (if possible) + if(!desk.icon.isEmpty()){ icon = desk.icon; } + } + }else{ + //Generic file, just determine the mimetype + mime = LXDG::findAppMimeForFile(this->fileName()); + } + } + +public: + LFileInfo(QString filepath){ //overloaded contructor + this->setFile(filepath); + loadExtraInfo(); + } + LFileInfo(QFileInfo info){ //overloaded contructor + this->swap(info); //use the given QFileInfo without re-loading it + loadExtraInfo(); + } + ~LFileInfo(){} + + //Functions for accessing the extra information + // -- Return the mimetype for the file + QString mimetype(){ + return mime; + } + + // -- Return the icon to use for this file + QString iconfile(){ + return (icon.isEmpty() ? mime: icon); //Fall back on the mimetype if no icon listed + } + + // -- Check if this is an XDG desktop file + bool isDesktopFile(){ + return (!desk.filePath.isEmpty()); + } + + // -- Allow access to the XDG desktop data structure + const XDGDesktop* XDG(){ + return &desk; + } + + // -- Check if this is a readable image file (for thumbnail support) + bool isImage(){ + if(!mime.startsWith("image/")){ return false; } //quick return for non-image files + //Check the Qt subsystems to see if this image file can be read + return ( !LUtils::imageExtensions().filter(this->suffix().toLower()).isEmpty() ); + } +}; + +class LDirInfoList{ +public: + //Internal variables + QDateTime lastcheck; + QList<LFileInfo> list; + QStringList fileNames; //list of filenames for comparison/checking sorting + QString dirpath; //directory this structure was reading + bool hashidden; + + //Access Functions + LDirInfoList(QString path = ""){ + dirpath = path; + list.clear(); + fileNames.clear(); + hashidden = false; + } + ~LDirInfoList(){} + + //(re)Load a directory contents + void update(bool showhidden = false){ + if(dirpath.isEmpty()){ return; } //nothing to do + //Assemble the structures + QDir dir(dirpath); + hashidden = showhidden; + if(!dir.exists()){ + list.clear(); + fileNames.clear(); + dirpath.clear(); //invalid directory now + return; + } + QFileInfoList dirlist; + //Fill the structure + list.clear(); + fileNames.clear(); + lastcheck = QDateTime::currentDateTime(); + if(showhidden){ dirlist = dir.entryInfoList(QDir::AllEntries | QDir::NoDotAndDotDot | QDir::Hidden , QDir::Name | QDir::DirsFirst); } + else{ dirlist = dir.entryInfoList(QDir::AllEntries | QDir::NoDotAndDotDot , QDir::Name | QDir::DirsFirst); } + //Simple add routine - can make it more dynamic/selective about updating individual items later + for(int i=0; i<dirlist.length(); i++){ + list << LFileInfo(dirlist[i]); //generate the extra information for this file + fileNames << dirlist[i].fileName(); //add the filename to the list + } + + } + +}; + +//This class is designed to be run in a background thread and get all the necessary info for a directory listing +class DirData : public QObject{ + Q_OBJECT +private: + QHash<QString, LDirInfoList> HASH; //Where we cache any info for rapid access later + +signals: + void DirDataAvailable(QString, QList<LFileInfo>); //[ID, DATA] + +public: + //Variables + bool showHidden; + + //Functions + DirData(){ + showHidden = false; + } + ~DirData(){} + +public slots: + void GetDirData(QString ID, QString dirpath){ + //The ID is used when returning the info in a moment + if(!HASH.contains(dirpath)){ + //New directory (not previously loaded) + LDirInfoList info(dirpath); + info.update(showHidden); + HASH.insert(dirpath, info); + }else{ + //See if the saved info needs to be updated + if( (HASH.value(dirpath).hashidden != showHidden) || (QFileInfo(dirpath).lastModified() > HASH.value(dirpath).lastcheck) ){ + HASH[dirpath].update(showHidden); + } + + } + emit DirDataAvailable(ID, HASH.value(dirpath).list); + } + +}; + +#endif |