The Settings panel gives you the ability to turn particle types on or off as you please. Doing this will disable the particle for any assigned pages, even if you have it already set in the Layout Manager.
Think of this panel as the breaker panel of Gantry. It serves as a one-stop shop for enabling and disabling particles such as the Logo, Date, and Google Analytics. We have a full breakdown of Gantry's included particles in the next chapter.
The Save Settings button applies any changes you have made to the Settings administrative panel to its associated outline. These changes apply as the new default for the setting for that outline only, and will only become a global default if you are using the theme's assigned base outline.
When using an override outline, you will notice checkboxes next to the different settings fields. When unchecked, these fields may appear grayed out until you either click the setting or the checkbox to indicate you would like to make a change. Once you have made a change and clicked the Save Settings button, your changes will be saved for the associated outline. To revert this change back to its default setting, simply uncheck the check box.
You can also take advantage of the search field to filter particles, positions, and atoms to make it easier to find the specific item you want to configure. To make things even easier to navigate through, you can use the Collapse All and Expand All buttons to collapse items down so all see is its name and whether or not it is activated, or expand them all. Upon selecting the expansion arrow to the left of each item, you can expand or collapse it, individually.
Particles are visual blocks that render where they have been assigned on the Layout administrative panel. This section of the Settings administrative panel enables you to set defaults which apply to the currently-selected outline. If you are using the Base Outline, these settings become the global default for those particles.
These Particles can vary depending on the theme, but typically include things such as the Logo, Copyright, Menu, and Spacer.
The Atom Settings area of the Settings administrative panel gives you the ability to quickly and easily manage and configure these atoms to meet your individual needs. For example, you could add your UA Code to the Google Analytics Atom which is then applied by default to outlines you have placed the Google Analytics Atom in the Layout administrative panel for.
The Spacer setting gives you the ability to globally disable (or enable) spacer particles for the outline. Doing this when Spacer particles are in place will cause them not to affect the frontend.
The Page Content setting area enables you to turn the Mainbody on or off for the outline. If you have the Page Content module already in place in the Layout Manager turning it off in the Settings administrative panel will disable it so it will not render on the front end.
The System Messages setting area enables you to display system messages in your layout. There are no settings that need to be configured here, other than activating and deactivating it.
The Module Position setting enables you to globally disable (or enable) module positions for the outline. Doing this when Module Position particles are in place will cause assigned modules not to appear the front end.
The Module Instance position enables you to inject a single instance of a Joomla module directly into your layout or menu. You can set a default Module ID and Chrome in this space.
The Widget Position setting enables you to globally disable (or enable) widget positions for the outline. Doing this when Widget Position particles are in place will cause assigned widgets not to appear the front end.
The Widget position enables you to inject a single widget into the page. Its settings are pretty simple. You need but to pick a widget, configure the widget's settings, set its chrome (if applicable), and it will appear on the front end wherever you place it in the Layout Manager or Menu Editor.
Doing this bypasses the need to assign the widget to the position via a traditional widget position.
Grav documentation is coming soon...