Hi Narendra,
From $request, you will be able to find all this variables value.
So, if you were to dump a $request variable from a template it would look like this:
{ render-url-exclusive=http://localhost:8080/web/workshop/home ?p_p_id=56_INSTANCE_6860&p_p_lifecycle=0 &p_p_state=exclusive&p_p_mode=view& p_p_col_id=column-1&p_p_col_count=1, auth-type=, scheme=http, render-url-normal=http://localhost:8080/web/workshop/home ?p_p_id=56_INSTANCE_6860&p_p_lifecycle=0& p_p_state=normal&p_p_mode=view& p_p_col_id=column-1&p_p_col_count=1, locale=en_US, attributes={ COMPANY_ID=10095, PORTLET_ID=56_INSTANCE_6860, RENDER_PORTLET_COLUMN_POS=0, CURRENT_COMPLETE_URL=http://localhost:8080/web/workshop/home, LAST_PATH={ contextPath=/web, path=/workshop/home }, FRIENDLY_URL=/web/workshop/home, com.liferay.portal.servlet.filters.strip.StripFilterSKIP_FILTER=true, PORTLET_PARALLEL_RENDER=true, RENDER_PORTLET_COLUMN_ID=column-1, LAYOUT_FRIENDLY_URL=/home, CURRENT_URL=/web/workshop/home, RENDER_PORTLET_COLUMN_COUNT=1, org.apache.struts.action.mapping.instance=ActionConfig [path=/journal_content/view, scope=session, type=com.liferay.portlet.journalcontent.action.ViewAction, validate=true,cancellable=false, LIFERAY_SHARED_PAGE_KEYWORDS=[ad], USER_ID=10150, PORTLET_STRUTS_ACTION=/journal_content/view, com.liferay.portal.servlet.filters.gzip.GZipFilterSKIP_FILTER=true }, render-url-pop-up=http://localhost:8080/web/workshop/home ?p_p_id=56_INSTANCE_6860&p_p_lifecycle=0& p_p_state=pop_up&p_p_mode=view&p_p_col_id=column-1 &p_p_col_count=1, render-url-maximized=http://localhost:8080/web/workshop/home ?p_p_id=56_INSTANCE_6860&p_p_lifecycle=0& p_p_state=maximized&p_p_mode=view& p_p_col_id=column-1&p_p_col_count=1, render-url-minimized=http://localhost:8080/web/workshop/home ?p_p_id=56_INSTANCE_6860&p_p_lifecycle=0& p_p_state=minimized&p_p_mode=view& p_p_col_id=column-1&p_p_col_count=1, server-port=8080, portlet-mode=view, secure=false, action=false, theme-display={ secure=false, scope-group-id=10174, portal-url=localhost:8080, plid=10265, path-main=/c, i18n-language-id=, url-portal=localhost:8080, do-as-user-id=, path-context=, path-image=/image, user-id=10150, language-id=en_US, company-id=10095, locale=en_US, time-zone=UTC, path-friendly-url-public=/web, path-theme-images=/sesameworkshop-theme/images, real-user-id=10150, cdn-host=, path-friendly-url-private-group=/group, server-name=localhost, path-friendly-url-private-user=/user, server-port=8080, portlet-display={ title=Journal Content, portlet-name=56, instance-id=6860, resource-pk=10265_LAYOUT_56_INSTANCE_6860, root-portlet-id=56, id=56_INSTANCE_6860 } }, parameters=, container-type=portlet, context-path=/, content-type=text/html, render-url=http://localhost:8080/web/workshop/home ?p_p_id=56_INSTANCE_6860&p_p_lifecycle=0& p_p_state=normal&p_p_mode=view& p_p_col_id=column-1&p_p_col_count=1, remote-user=10150, window-state=normal, server-name=localhost, container-namespace=/, portlet-session={ portlet-attributes=, application-attributes={ com.liferay.portal.kernel.util.ProgressTracker_PERCENT=100, j_username=10150, HTTPS_INITIAL=false, LIFERAY_SHARED_VISITED_GROUP_ID_PREVIOUS=10100, LAST_PATH={ contextPath=/web, path=/workshop/home }, USER_ID=10150, LIFERAY_SHARED_VISITED_GROUP_ID_RECENT=10174, org.apache.struts.action.LOCALE=en_US } }, portlet-namespace=_56_INSTANCE_6860_, portlet-session-id=1D8EA0980982E0C4DD5199B092450A2E } }}}
From the above you will be able to find theme-display and also path-theme-images.
For more info refer
this link.
Hope it will be useful.
Thanks & Regards,
Amit Doshi
