Large update to the Lumina project: provide full theming capabilities.

1) New libLumina classes: LuminaThemes.h
2) Single-line usage to add lumina theme usage to an application (already added to all the Lumina utilities)
3) Include a Lumina-default theme template, as well as a single color scheme (will add more later)
4) Will create a global Qt style for "lumina" so that this theme engine can be automatically applied to all Qt applications at a later date (want to make sure to beat this up and get it working reliably before turning it on for everything).

Major Features:
1) Full Qt theme capabilities through Qt stylesheets (so they can be modified and applied on the fly).
2) Stylesheets are broken into a couple pieces: an "incomplete" stylesheet file (the theme template) with variables in place of colors, font size, and font family. A "color" file which variable->value definitions for the different colors. And a themesettings.cfg files which keeps track of the files/font settings.
3) Along with this, add the ability to specify the icon theme that is used as well, and make that automatically re-loaded as necessary.
4) Add the ability to read/set thes values in lumina-config. The lumina-config usage is still a bit rough: working on cleaning it up right now.

1 files changed, 56 insertions, 17 deletions

diff --git a/libLumina/LuminaThemes.cpp b/libLumina/LuminaThemes.cpp
index 5100a084..8548f739 100644
--- a/libLumina/LuminaThemes.cpp
+++ b/libLumina/LuminaThemes.cpp
@@ -9,6 +9,7 @@
 #include "LuminaUtils.h"
 #include "LuminaOS.h"
 #include <QIcon>
+#include <QFont>
 #include <QDebug>
 
 
@@ -65,11 +66,15 @@ QStringList LTHEME::availableSystemIcons(){ 	//returns: [name] for each item
     }
   }
   //Now get all the icon themes in these directories
-  QStringList themes;
+  QStringList themes, tmpthemes;
   QDir dir;
   for(int i=0; i<paths.length(); i++){
     if(dir.cd(paths[i])){
-       themes << dir.entryList(QDir::Dirs | QDir::NoDotAndDotDot, QDir::Name);
+       tmpthemes = dir.entryList(QDir::Dirs | QDir::NoDotAndDotDot, QDir::Name);
+       for(int j=0; j<tmpthemes.length(); j++){
+	 if(tmpthemes[j].startsWith("default")){ continue; }
+         if(QFile::exists(dir.absoluteFilePath(tmpthemes[j]+"/index.theme")) ){ themes << tmpthemes[j]; }
+       }
     }
   }
   themes.removeDuplicates();
@@ -77,36 +82,61 @@ QStringList LTHEME::availableSystemIcons(){ 	//returns: [name] for each item
   return themes;
 }
 	
-  //Return the currently selected Theme/Colors/Icons
-QStringList LTHEME::currentSettings(){ //returns [theme path, colorspath, iconsname]
-  QStringList out; out << "" << "" << "";
+//Save a new theme/color file
+bool LTHEME::saveLocalTheme(QString name, QStringList contents){
+  QString localdir = QDir::homePath()+"/.lumina/themes/";
+  if(!QFile::exists(localdir)){  QDir dir(); dir.mkpath(localdir); }
+  return LUtils::writeFile(localdir+name+".qss.template", contents, true);
+}
+
+bool LTHEME::saveLocalColors(QString name, QStringList contents){
+  QString localdir = QDir::homePath()+"/.lumina/colors/";
+  if(!QFile::exists(localdir)){  QDir dir(); dir.mkpath(localdir); }
+  return LUtils::writeFile(localdir+name+".qss.colors", contents, true);	
+}
+
+//Return the currently selected Theme/Colors/Icons
+QStringList LTHEME::currentSettings(){ //returns [theme path, colorspath, iconsname, font, fontsize]
+  QStringList out; out << "" << "" << "" << "" << "";
   QStringList settings = LUtils::readFile(QDir::homePath()+"/.lumina/themesettings.cfg");
   for(int i=0; i<settings.length(); i++){
     if(settings[i].startsWith("THEMEFILE=")){ out[0] = settings[i].section("=",1,1).simplified(); }
     else if(settings[i].startsWith("COLORFILE=")){ out[1] = settings[i].section("=",1,1).simplified(); }
+    else if(settings[i].startsWith("ICONTHEME=")){ out[2] = settings[i].section("=",1,1).simplified(); }
+    else if(settings[i].startsWith("FONTFAMILY=")){ out[3] = settings[i].section("=",1,1).simplified(); }
+    else if(settings[i].startsWith("FONTSIZE=")){ out[4] = settings[i].section("=",1,1).simplified(); }
   }
-  out[2] = QIcon::themeName();
   bool nofile = settings.isEmpty();
-  if(out[0].isEmpty()){ out[0] = LOS::LuminaShare()+"themes/SampleTheme.qss.template"; }
+  if(out[0].isEmpty()){ out[0] = LOS::LuminaShare()+"themes/Lumina-default.qss.template"; }
   if(out[1].isEmpty()){ out[1] = LOS::LuminaShare()+"colors/SampleColors.qss.colors"; }
-  if(nofile){ setCurrentSettings(out[0], out[1], out[2]); }
+  if(out[3].isEmpty()){ out[3] = QFont().defaultFamily(); }
+  if(out[4].isEmpty()){ 
+    int num = QFont().pointSize(); out[4] = QString::number(num)+"pt"; //Check point size first
+    if(num<0){ num = QFont().pixelSize(); out[4] = QString::number(num)+"px";} //Now check pixel size
+    if(num<0){ out[4] = "9pt"; } //Now hard-code a fallback (just in case)
+  }
+  if(nofile){ setCurrentSettings(out[0], out[1], out[2], out[3], out[4]); }
   
   return out;
 }
 	
   //Change the current Theme/Colors/Icons
-bool LTHEME::setCurrentSettings(QString themepath, QString colorpath, QString iconname){
+bool LTHEME::setCurrentSettings(QString themepath, QString colorpath, QString iconname, QString font, QString fontsize){
+  QIcon::setThemeName(iconname);
+  //Now save the theme settings file	
   QStringList contents;
 	contents << "THEMEFILE="+themepath;
 	contents << "COLORFILE="+colorpath;
 	contents << "ICONTHEME="+iconname;
+	contents << "FONTFAMILY="+font;
+	contents << "FONTSIZE="+fontsize;
   bool ok = LUtils::writeFile(QDir::homePath()+"/.lumina/themesettings.cfg", contents, true);
-  QIcon::setThemeName(iconname);
+
   return ok;
 }
 	
   //Return the complete stylesheet for a given theme/colors
-QString LTHEME::assembleStyleSheet(QString themepath, QString colorpath){
+QString LTHEME::assembleStyleSheet(QString themepath, QString colorpath, QString font, QString fontsize){
   QString stylesheet = LUtils::readFile(themepath).join("\n");
   QStringList colors = LUtils::readFile(colorpath);
   //qDebug() << "Found Theme:" << themepath << stylesheet;
@@ -126,6 +156,8 @@ QString LTHEME::assembleStyleSheet(QString themepath, QString colorpath){
     else if(colors[i].startsWith("TEXTCOLOR=")){ stylesheet = stylesheet.replace("%%TEXTCOLOR%%", colors[i].section("=",1,1).simplified()); }
     else if(colors[i].startsWith("TEXTHIGHLIGHTCOLOR=")){ stylesheet = stylesheet.replace("%%TEXTHIGHLIGHTCOLOR%%", colors[i].section("=",1,1).simplified()); }
   }
+  stylesheet = stylesheet.replace("%%FONT%%", font);
+  stylesheet = stylesheet.replace("%%FONTSIZE%%", fontsize);
   //qDebug() << "Assembled Style Sheet:\n" << stylesheet;
   return stylesheet;
 }
@@ -135,9 +167,15 @@ QString LTHEME::assembleStyleSheet(QString themepath, QString colorpath){
 //==================
 LuminaThemeEngine::LuminaThemeEngine(QApplication *app){
   application=app; //save this pointer for later
+  //Make sure to prefer font antialiasing on the application
+  QFont tmp = application->font();
+  tmp.setStyleStrategy(QFont::PreferAntialias);
+  application->setFont(tmp);
+  // Now load the theme stylesheet
   QStringList current = LTHEME::currentSettings();
-  theme = current[0]; colors=current[1]; icons=current[2];
-  application->setStyleSheet( LTHEME::assembleStyleSheet(theme, colors) );
+  theme = current[0]; colors=current[1]; icons=current[2]; font=current[3]; fontsize=current[4];
+  application->setStyleSheet( LTHEME::assembleStyleSheet(theme, colors, font, fontsize) );
+  QIcon::setThemeName(icons); //make sure this sets set within this environment
   watcher = new QFileSystemWatcher(this);
 	watcher->addPath( QDir::homePath()+"/.lumina/themesettings.cfg" );
   connect(watcher, SIGNAL(fileChanged(QString)), this, SLOT(watcherChange()) );
@@ -149,12 +187,13 @@ LuminaThemeEngine::~LuminaThemeEngine(){
 
 void LuminaThemeEngine::watcherChange(){
   QStringList current = LTHEME::currentSettings();
-  if(theme!=current[0] || colors!=current[1]){
-    application->setStyleSheet( LTHEME::assembleStyleSheet(current[0], current[1]) );
+  if(theme!=current[0] || colors!=current[1] || font!=current[3] || fontsize!=current[4]){
+    application->setStyleSheet( LTHEME::assembleStyleSheet(current[0], current[1], current[3], current[4]) );
   }
-  if(icons!=current[3]){
+  if(icons!=current[2]){
+    QIcon::setThemeName(current[2]); //make sure this sets set within this environment
     emit updateIcons();
   }
   //Now save this for later checking
-  theme = current[0]; colors=current[1]; icons=current[2];
+  theme = current[0]; colors=current[1]; icons=current[2]; font=current[3]; fontsize=current[4];
 }