Skinning How To/Edit a menu

= Introduction =
* All viewer menu options are set in menu_viewer.xml except for the Advanced/Admin menus (see VWR-2896). 
* Width/height/bottom/left/top are irrelevant in the menu files. The viewer constructs menus based on the xml file's organization and ignores these parameters. 
* Example menu structure:
<menu_bar>
 <menu>
 <menu_item_call>
 <on_click />
 </menu_item_call>
 <menu> 
 <menu_item_check> 
 <on_check />
 </menu_item_check>
 <menu_item_separator />
 <menu_item_call> 
 <on_click />
 <on_enable />
 </menu_item_call>
 </menu>
 </menu>
</menu_bar>
* For consistency, all layout settings are set in the \skins\default\xui\en-us folder. Other language folders contain translation strings. 
== Menu files ==
* Viewer menu: menu_viewer.xml
* Inventory menu: floater_inventory.xml
* Inventory item menu when right clicked: menu_inventory.xml
* Script editor menu: floater_script_ed_panel.xml
* SLURL menu when right clicked (not currently enabled): menu_slurl.xml
* Menu at the login screen: menu_login.xml
* Pie menu when you right click:
** An object: menu_pie_object.xml
** Yourself: menu_pie_self.xml
** Land: menu_pie_land.xml
** Someone else: menu_pie_avatar.xml
** An attachment: menu_pie_attachment.xml
= Tags =
== <menu_bar> ==
Colored menu background. Optional. Accepts name and opaque. 
== <menu> ==
Top level menu. Flyout menu when nested.
== <pie_menu> ==
Pie menu. Multiple pie menus when nested.
== <menu_item_call> ==
Menu item that tells the viewer to execute a specific function. 
== <menu_item_check> ==
Menu item that toggles whether something is active or inactive (set via an X next to the name).
== <on_click /> ==
Nested in a menu item. Sets the function when clicked.
== <on_enable /> ==
Nested in a menu item. Sets the function when option is enabled. 
== <on_check /> ==
Nested in a menu item. Sets the function when checked.
== <menu_item_separator /> ==
Draws a separator between menu options.
== <tearoff_menu> ==
Does nothing. Assumed to be a legacy setting.
= Parameters =
Parameters define how a menu item is used. For example, this is the menu item to "Close All Windows":
<menu_item_call
 bottom="-113"
 enabled="true"
 height="19"
 label="Close All Windows"
 left="0"
 mouse_opaque="true"
 name="Close All Windows"
 shortcut="control|shift|W"
 width="243">
 <on_click
 function="File.CloseAllWindows"
 userdata="" />
 <on_enable
 function="File.EnableCloseAllWindows"
 userdata="" /></menu_item_call>
Valid parameters:
== enabled ==
Sets whether or not a menu is enabled or not. Use in <menu>. 
Boolean: enabled="true" (Default true)
== label ==
Sets the name the user sees. Necessary for <menu> and menu items. 
String: label="Awesome Menu"
== name == 
Sets the name the viewer sees. Necessary for <menu> and menu items. 
String: name="MenuAwesome"
* Changing the name of the Tools menu will make it not auto-hide.
== tear_off ==
Optional. Sets whether or not the menu can be torn off (the double bars at the top of a menu). Use in <menu>. 
Boolean: tear_off="true" (Default true)
== opaque ==
Optional. Sets whether or not the menu is opaque Setting a top-level menu like World to false turns the menu transparent (unless it's torn off and reattached, then you have to relog). Setting the menu bar to false will turn it transparent per its setting in colors.xml. Use in <menu> and <menu_bar>. 
Boolean: opaque="true"
== mouse_opaque ==
== drop_shadow ==
Default.
== create_jump_keys ==
Optional. Allows keyboard navigation via jump keys. Menus can be navigated using the keyboard by holding down ALT and pressing up or down. 
Boolean: create_jump_keys="true"
== userdata ==
Optional. Any data sent to the function. Use in <on_click>, etc.
String: userdata="800,600"
== function ==
Associates a function with a menu item and action. Use in <on_click>, etc. 
String: function="Tools.SelectedScriptAction"
== shortcut ==
Optional. Sets the keyboard shortcut for a menu item. Each key is separated by pipes.
String: shortcut="control|alt|T"
= Moving menu items =
Most all of the menu items in the menu*.xml files can be placed in other menu*.xml files (there are some exceptions). For example, you can move return from the pie menu to the Tools menu, or Link from tools to the pie.
To do so, simply copy the <menu_item /> tag and its essential parameters from one file to the other. 
Note that in the pie menu, empty slices are defined by a <menu_item_separator /> tag.
= Useful Tips =
* If you're adding a shortcut, make sure it isn't used by another item first.
* Don't change a menu's name= value. This is used in translation.
* Renaming a menu's label is fine as long as it calls a working function. 
* Any number of top level menus, flyout menus, and menu items can be set. 
* Don't worry about width/height/bottom/left/top. As said in the intro, these don't do anything anymore. 
* If you want to create a new menu item that doesn't call an existing function, you need to edit the source as well. See Adding_a_menu_item for a start.
Category:Skinning