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//===========================================
// Lumina-desktop source code
// Copyright (c) 2017, Ken Moore
// Available under the 3-clause BSD license
// See the LICENSE file for full details
//===========================================
#include "LIconCache.h"
#include <LuminaOS.h>
#include <LUtils.h>
#include <LuminaXDG.h>
#include <QDir>
#include <QtConcurrent>
LIconCache::LIconCache(QObject *parent) : QObject(parent){
}
LIconCache::~LIconCache(){
}
// === PUBLIC ===
//Icon Checks
bool LIconCache::exists(QString icon){
if(HASH.contains(icon)){ return true; } //already
else if(!icon.startsWith("/")){
//relative path to file (from icon theme?)
QString path = findFile(icon);
if(!path.isEmpty() && QFile::exists(path)){ return true; }
}else{
//absolute path to file
return QFile::exists(icon);
}
return false;
}
bool LIconCache::isLoaded(QString icon){
if(HASH.contains(icon)){
return !HASH[icon].icon.isNull();
}
return false;
}
QString LIconCache::findFile(QString icon){
//Get the currently-set theme
QString cTheme = QIcon::themeName();
if(cTheme.isEmpty()){
QIcon::setThemeName("material-design-light");
cTheme = "material-design-light";
}
//Make sure the current search paths correspond to this theme
if( QDir::searchPaths("icontheme").filter("/"+cTheme+"/").isEmpty() ){
//Need to reset search paths: setup the "icontheme" "material-design-light" and "fallback" sets
// - Get all the base icon directories
QStringList paths;
paths << QDir::homePath()+"/.icons/"; //ordered by priority - local user dirs first
QStringList xdd = QString(getenv("XDG_DATA_HOME")).split(":");
xdd << QString(getenv("XDG_DATA_DIRS")).split(":");
for(int i=0; i<xdd.length(); i++){
if(QFile::exists(xdd[i]+"/icons")){ paths << xdd[i]+"/icons/"; }
}
//Now load all the dirs into the search paths
QStringList theme, oxy, fall;
QStringList themedeps = LXDG::getIconThemeDepChain(cTheme, paths);
for(int i=0; i<paths.length(); i++){
theme << getChildIconDirs( paths[i]+cTheme);
for(int j=0; j<themedeps.length(); j++){ theme << getChildIconDirs(paths[i]+themedeps[j]); }
oxy << getChildIconDirs(paths[i]+"material-design-light"); //Lumina base icon set
fall << getChildIconDirs(paths[i]+"hicolor"); //XDG fallback (apps add to this)
}
//Now load all the icon theme dependencies in order (Theme1 -> Theme2 -> Theme3 -> Fallback)
//fall << LOS::AppPrefix()+"share/pixmaps"; //always use this as well as a final fallback
QDir::setSearchPaths("icontheme", theme);
QDir::setSearchPaths("default", oxy);
QDir::setSearchPaths("fallback", fall);
//qDebug() << "Setting Icon Search Paths:" << "\nicontheme:" << theme << "\nmaterial-design-light:" << oxy << "\nfallback:" << fall;
}
//Find the icon in the search paths
QIcon ico;
QStringList srch; srch << "icontheme" << "default" << "fallback";
for(int i=0; i<srch.length() && ico.isNull(); i++){
if(QFile::exists(srch[i]+":"+icon+".svg") && !icon.contains("libreoffice") ){
return QFileInfo(srch[i]+":"+icon+".svg").absoluteFilePath();
}else if(QFile::exists(srch[i]+":"+icon+".png")){
return QFileInfo(srch[i]+":"+icon+".png").absoluteFilePath();
}
}
//If still no icon found, look for any image format in the "pixmaps" directory
if(QFile::exists(LOS::AppPrefix()+"share/pixmaps/"+icon)){
return (LOS::AppPrefix()+"share/pixmaps/"+icon);
}else{
//Need to scan for any close match in the directory
QDir pix(LOS::AppPrefix()+"share/pixmaps");
QStringList formats = LUtils::imageExtensions();
QStringList found = pix.entryList(QStringList() << icon, QDir::Files, QDir::Unsorted);
if(found.isEmpty()){ found = pix.entryList(QStringList() << icon+"*", QDir::Files, QDir::Unsorted); }
//qDebug() << "Found pixmaps:" << found << formats;
//Use the first one found that is a valid format
for(int i=0; i<found.length(); i++){
if( formats.contains(found[i].section(".",-1).toLower()) ){
return pix.absoluteFilePath(found[i]);
}
}
}
return ""; //no file found
}
void LIconCache::loadIcon(QAbstractButton *button, QString icon, bool noThumb){
//See if the icon has already been loaded into the HASH
if(HASH.contains(icon)){
if(!noThumb && !HASH[icon].thumbnail.isNull()){ button->setIcon( HASH[icon].thumbnail ); return; }
else if(!HASH[icon].icon.isNull()){ button->setIcon( HASH[icon].icon ); return; }
}
//Need to load the icon
icon_data idata;
if(HASH.contains(icon)){ idata = HASH.value(icon); }
else { idata = createData(icon); }
idata.pendingButtons << button; //save this button for later
HASH.insert(icon, idata);
QtConcurrent::run(this, &LIconCache::ReadFile, this, icon, idata.fullpath);
}
void LIconCache::loadIcon(QLabel *label, QString icon, bool noThumb){
//See if the icon has already been loaded into the HASH
if(HASH.contains(icon)){
if(!noThumb && !HASH[icon].thumbnail.isNull()){ label->setPixmap( HASH[icon].thumbnail.pixmap(label->sizeHint()) ); return; }
else if(!HASH[icon].icon.isNull()){ label->setPixmap( HASH[icon].icon.pixmap(label->sizeHint()) ); return; }
}
//Need to load the icon
icon_data idata;
if(HASH.contains(icon)){ idata = HASH.value(icon); }
else { idata = createData(icon); }
idata.pendingLabels << label; //save this QLabel for later
HASH.insert(icon, idata);
QtConcurrent::run(this, &LIconCache::ReadFile, this, icon, idata.fullpath);
}
void LIconCache::clearIconTheme(){
//use when the icon theme changes to refresh all requested icons
QStringList keys = HASH.keys();
for(int i=0; i<keys.length(); i++){
//remove all relative icons (
if(!keys.startsWith("/")){ HASH.remove(keys[i]); }
}
}
QIcon LIconCache::loadIcon(QString icon, bool noThumb){
if(HASH.contains(icon)){
if(!HASH[icon].icon.isNull()){ return HASH[icon].icon; }
else if(!HASH[icon].thumbnail.isNull() && !noThumb){ return HASH[icon].thumbnail; }
}
//Not loaded yet - need to load it right now
icon_data idat;
if(HASH.contains(icon)){ idat = HASH[icon]; }
else{ idat = createData(icon); }
idat.icon = QIcon(idat.fullpath);
//Now save into the hash and return
HASH.insert(icon, idat);
emit IconAvailable(icon);
return idat.icon;
}
void LIconCache::clearAll(){
HASH.clear();
}
// === PRIVATE ===
icon_data LIconCache::createData(QString icon){
icon_data idat;
//Find the real path of the icon
if(icon.startsWith("/")){ idat.fullpath = icon; } //already full path
else{ idat.fullpath = findFile(icon); }
return idat;
}
QStringList LIconCache::getChildIconDirs(QString path){
//This is a recursive function that returns the absolute path(s) of directories with *.png files
QDir D(path);
QStringList out;
QStringList dirs = D.entryList(QDir::Dirs | QDir::NoDotAndDotDot, QDir::Name);
if(!dirs.isEmpty() && (dirs.contains("32x32") || dirs.contains("scalable")) ){
//Need to sort these directories by image size
//qDebug() << " - Parent:" << parent << "Dirs:" << dirs;
for(int i=0; i<dirs.length(); i++){
if(dirs[i].contains("x")){ dirs[i].prepend( QString::number(10-dirs[i].section("x",0,0).length())+QString::number(10-dirs[i].at(0).digitValue())+"::::"); }
else if(dirs[i].at(0).isNumber()){dirs[i].prepend( QString::number(10-dirs[i].length())+QString::number(10-dirs[i].at(0).digitValue())+"::::"); }
else{ dirs[i].prepend( "0::::"); }
}
dirs.sort();
for(int i=0; i<dirs.length(); i++){ dirs[i] = dirs[i].section("::::",1,50); } //chop the sorter off the front again
//qDebug() << "Sorted:" << dirs;
}
QStringList img = D.entryList(QStringList() << "*.png" << "*.svg", QDir::Files | QDir::NoDotAndDotDot, QDir::NoSort);
if(img.length() > 0){ out << D.absolutePath(); }
for(int i=0; i<dirs.length(); i++){
img.clear();
img = getChildIconDirs(D.absoluteFilePath(dirs[i])); //re-use the old list variable
if(img.length() > 0){ out << img; }
}
return out;
}
QStringList LIconCache::getIconThemeDepChain(QString theme, QStringList paths){
QStringList results;
for(int i=0; i<paths.length(); i++){
if( QFile::exists(paths[i]+theme+"/index.theme") ){
QStringList deps = LUtils::readFile(paths[i]+theme+"/index.theme").filter("Inherits=");
if(!deps.isEmpty()){
deps = deps.first().section("=",1,-1).split(";",QString::SkipEmptyParts);
for(int j=0; j<deps.length(); j++){
results << deps[j] << getIconThemeDepChain(deps[j],paths);
}
}
break; //found primary theme index file - stop here
}
}
return results;
}
void LIconCache::ReadFile(LIconCache *obj, QString id, QString path){
QByteArray *BA = new QByteArray();
QDateTime cdt = QDateTime::currentDateTime();
QFile file(path);
if(file.open(QIODevice::ReadOnly)){
BA->append(file.readAll());
file.close();
}
obj->emit InternalIconLoaded(id, cdt, BA);
}
// === PRIVATE SLOTS ===
void LIconCache::IconLoaded(QString id, QDateTime sync, QByteArray *data){
QPixmap pix;
bool ok = pix.loadFromData(*data);
delete data; //no longer used - free this up
if(!HASH.contains(id)){ return; } //icon loading cancelled - just stop here
if(!ok){ HASH.remove(id); } //icon data corrupted or unreadable
else{
icon_data idat = HASH[id];
idat.lastread = sync;
idat.icon.addPixmap(pix);
//Now throw this icon into any pending objects
for(int i=0; i<idat.pendingButtons.length(); i++){ idat.pendingButtons[i]->setIcon(idat.icon); }
idat.pendingButtons.clear();
for(int i=0; i<idat.pendingLabels.length(); i++){ idat.pendingLabels[i]->setPixmap(pix.scaled(idat.pendingLabels[i]->sizeHint(), Qt::KeepAspectRatio, Qt::SmoothTransformation)); }
idat.pendingLabels.clear();
//Now update the hash and let the world know it is available now
HASH.insert(id, idat);
this->emit IconAvailable(id);
}
}
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