Themes can now be used without the detailed GuiGameList.

If a theme.xml is not found in a system's directory, ES will now check for $HOME/.emulationstation/es_theme.xml. If present, it will load that.
Fixed GuiGameList image data not updating on system change/initial startup. (finally!)

README.md

@@ -34,7 +34,7 @@ gamelist.xml
 ============
 
 If a file named gamelist.xml is found in the root of a system's search directory, it will be parsed and the detailed GuiGameList will be used. This means you can define images, descriptions, and different names for files.
-Images are meant to be 256x256, but ES won't stop you from using other sizes - they'll just be placed wrong. I'd like to add automatic scaling (with SDL_gfx) in a future update.
+Images will be automatically resized to fit within the left column of the screen. Smaller images will load faster, so try to keep your resolution low.
 An example gamelist.xml:
 ```
 <gameList>
@@ -55,7 +55,7 @@ The switch `--gamelist-only` can be used to skip automatic searching, and only d
 Themes
 ======
 
-At the moment, theming is still in flux. But if you want to play around with what's here, you can place a theme.xml file in a system's directory. It will be automatically loaded if present (and you're using the detailed view - any system has a gamelist.xml set up).
+At the moment, theming is still in flux. But if you want to play around with what's here, feel free. ES will first check a system's search directory for a file named theme.xml. If that's not found, it'll check $HOME/.emulationstation/es_theme.xml.
 Themes are drawn before the rest of the game list. Here's the example I've been using to test a background:
 
 ```
@@ -75,4 +75,3 @@ Variable support is present, but the only variable defined right now is $headerH
 
 -Aloshi
 http://www.aloshi.com
-

changelog.txt

@@ -1,3 +1,9 @@
+August 12
+-If a theme.xml is not found in a system's directory, ES will now check for $HOME/.emulationstation/es_theme.xml. If present, it will load that.
+-Themes can now be used without the detailed GuiGameList.
+-Fixed GuiGameList image data not updating on system change/initial startup (finally!)
+-Made the GuiList code a little bit less likely to crash on empty lists
+
 August 10
 -Themes now load from system directories (and thus you can set a different theme for each system)
 -Theme paths now expand . (to directory of this theme.xml) and ~ (to $HOME).

src/InputManager.cpp

@@ -242,12 +242,6 @@ void InputManager::loadConfig()
 std::string InputManager::getConfigPath()
 {
 	std::string home = getenv("HOME");
-	if(home.empty())
-	{
-		std::cerr << "FATAL ERROR - $HOME environment variable is blank or not defined!\n";
-		exit(1);
-		return "";
-	}
-
-	return(home + "/.emulationstation/es_input.cfg");
+	home += "/.emulationstation/es_input.cfg";
+	return home;
 }

src/components/GuiGameList.cpp

@@ -23,18 +23,15 @@ GuiGameList::GuiGameList(bool useDetail)
 	{
 		mList = new GuiList<FileData*>(Renderer::getScreenWidth() * 0.4, Renderer::getFontHeight(Renderer::LARGE) + 2);
 
-		mTheme = new GuiTheme();
-		//addChild(mTheme); //currently manually rendered before everything else in GuiGameList::onRender
-		//updateTheme();
-
 		mScreenshot = new GuiImage(Renderer::getScreenWidth() * 0.2, Renderer::getFontHeight(Renderer::LARGE) + 2, "", Renderer::getScreenWidth() * 0.3);
 		addChild(mScreenshot);
 	}else{
 		mList = new GuiList<FileData*>(0, Renderer::getFontHeight(Renderer::LARGE) + 2);
 		mScreenshot = NULL;
-		mTheme = NULL;
 	}
 
+	mTheme = new GuiTheme(); //not a child because it's rendered manually by GuiGameList::onRender (to make sure it's rendered first)
+
 	addChild(mList);
 
 	setSystemId(0);
@@ -81,6 +78,7 @@ void GuiGameList::setSystemId(int id)
 
 	updateTheme();
 	updateList();
+	updateDetailData();
 }
 
 void GuiGameList::onRender()
@@ -142,6 +140,7 @@ void GuiGameList::onInput(InputManager::InputButton button, bool keyDown)
 		mFolder = mFolderStack.top();
 		mFolderStack.pop();
 		updateList();
+		updateDetailData();
 	}
 
 	if(button == InputManager::RIGHT && keyDown)
@@ -162,12 +161,7 @@ void GuiGameList::onInput(InputManager::InputButton button, bool keyDown)
 	{
 		if(!keyDown && (button == InputManager::UP || button == InputManager::DOWN))
 		{
-			if(mList->getSelectedObject() && !mList->getSelectedObject()->isFolder())
-			{
-				mScreenshot->setImage(((GameData*)mList->getSelectedObject())->getImagePath());
-			}else{
-				mScreenshot->setImage("");
-			}
+			updateDetailData();
 		}
 	}
 }
@@ -195,24 +189,38 @@ void GuiGameList::updateTheme()
 	if(!mTheme)
 		return;
 
+	std::string defaultPath = getenv("HOME");
+	defaultPath += "/.emulationstation/es_theme.xml";
 	std::string themePath = mSystem->getStartPath() + "/theme.xml";
 
 	if(boost::filesystem::exists(themePath))
 		mTheme->readXML(themePath);
+	else if(boost::filesystem::exists(defaultPath))
+		mTheme->readXML(defaultPath);
 	else
 		mTheme->readXML(""); //clears any current theme
 }
 
+void GuiGameList::updateDetailData()
+{
+	if(!mDetailed)
+		return;
+
+	if(mList->getSelectedObject() && !mList->getSelectedObject()->isFolder())
+	{
+		mScreenshot->setImage(((GameData*)mList->getSelectedObject())->getImagePath());
+	}else{
+		mScreenshot->setImage("");
+	}
+}
+
 //these are called when the menu opens/closes
-//the second bit should be moved to GuiList
 void GuiGameList::onPause()
 {
 	InputManager::unregisterComponent(this);
-	InputManager::unregisterComponent(mList);
 }
 
 void GuiGameList::onResume()
 {
 	InputManager::registerComponent(this);
-	InputManager::registerComponent(mList);
 }

src/components/GuiGameList.h

@@ -17,7 +17,6 @@ public:
 	GuiGameList(bool useDetail = false);
 	~GuiGameList();
 
-	void updateList();
 	void setSystemId(int id);
 
 	void onRender();
@@ -26,7 +25,9 @@ public:
 	void onResume();
 
 private:
+	void updateList();
 	void updateTheme();
+	void updateDetailData();
 
 	SystemData* mSystem;
 	FolderData* mFolder;

src/components/GuiList.cpp

@@ -156,13 +156,19 @@ void GuiList<listType>::clear()
 template <typename listType>
 std::string GuiList<listType>::getSelectedName()
 {
-	return mRowVector.at(mSelection).name;
+	if((int)mRowVector.size() > mSelection)
+		return mRowVector.at(mSelection).name;
+	else
+		return "";
 }
 
 template <typename listType>
 listType GuiList<listType>::getSelectedObject()
 {
-	return mRowVector.at(mSelection).object;
+	if((int)mRowVector.size() > mSelection)
+		return mRowVector.at(mSelection).object;
+	else
+		return NULL;
 }
 
 template <typename listType>
@@ -170,3 +176,15 @@ int GuiList<listType>::getSelection()
 {
 	return mSelection;
 }
+
+template <typename listType>
+void GuiList<listType>::onPause()
+{
+	InputManager::unregisterComponent(this);
+}
+
+template <typename listType>
+void GuiList<listType>::onResume()
+{
+	InputManager::registerComponent(this);
+}

src/components/GuiList.h

@@ -25,6 +25,9 @@ public:
 	void addObject(std::string name, listType obj, int color = 0xFF0000);
 	void clear();
 
+	void onPause();
+	void onResume();
+
 	std::string getSelectedName();
 	listType getSelectedObject();
 	int getSelection();

src/components/GuiTheme.cpp

@@ -31,6 +31,9 @@ void GuiTheme::deleteComponents()
 
 void GuiTheme::readXML(std::string path)
 {
+	if(mPath == path)
+		return;
+
 	deleteComponents();
 
 	mPath = path;

src/main.cpp

@@ -11,6 +11,8 @@ bool PARSEGAMELISTONLY = false;
 bool IGNOREGAMELIST = false;
 float FRAMERATE = 0;
 
+namespace fs = boost::filesystem;
+
 int main(int argc, char* argv[])
 {
 	bool running = true;
@@ -19,7 +21,7 @@ int main(int argc, char* argv[])
 	{
 		std::cerr << "Error - could not initialize SDL!\n";
 		std::cerr << "	" << SDL_GetError() << "\n";
-		std::cerr << "\nAre you in the 'video' and 'input' groups?\n";
+		std::cerr << "Are you in the 'video' and 'input' groups? Are you running with X closed?\n";
 		return 1;
 	}
 	if(TTF_Init() != 0)
@@ -74,31 +76,31 @@ int main(int argc, char* argv[])
 	//make sure the config directory exists
 	std::string home = getenv("HOME");
 	std::string configDir = home + "/.emulationstation";
-	if(!boost::filesystem::exists(configDir))
+	if(!fs::exists(configDir))
 	{
 		std::cout << "Creating config directory \"" << configDir << "\"\n";
-		boost::filesystem::create_directory(configDir);
+		fs::create_directory(configDir);
 	}
 
 	//check if there are config files in the old places, and if so, move them to the new directory
 	std::string oldSysPath = home + "/.es_systems.cfg";
 	std::string oldInpPath = home + "/.es_input.cfg";
-	if(boost::filesystem::exists(oldSysPath))
+	if(fs::exists(oldSysPath))
 	{
 		std::cout << "Moving old system config file " << oldSysPath << " to new path at " << SystemData::getConfigPath() << "\n";
-		boost::filesystem::copy_file(oldSysPath, SystemData::getConfigPath());
-		boost::filesystem::remove(oldSysPath);
+		fs::copy_file(oldSysPath, SystemData::getConfigPath());
+		fs::remove(oldSysPath);
 	}
-	if(boost::filesystem::exists(oldInpPath))
+	if(fs::exists(oldInpPath))
 	{
 		std::cout << "Deleting old input config file\n";
-		boost::filesystem::remove(oldInpPath);
+		fs::remove(oldInpPath);
 	}
 
 
 
 	//try loading the system config file
-	if(!boost::filesystem::exists(SystemData::getConfigPath())) //if it doesn't exist, create the example and quit
+	if(!fs::exists(SystemData::getConfigPath())) //if it doesn't exist, create the example and quit
 	{
 		std::cerr << "A system config file in " << SystemData::getConfigPath() << " was not found. An example will be created.\n";
 		SystemData::writeExampleConfig();
@@ -130,7 +132,7 @@ int main(int argc, char* argv[])
 			}
 
 			//choose which Gui to open up
-			if(boost::filesystem::exists(InputManager::getConfigPath()))
+			if(fs::exists(InputManager::getConfigPath()))
 			{
 				InputManager::loadConfig();
 				new GuiGameList(useDetail);