| MASH-TK(1) | General Commands Manual | MASH-TK(1) |
mash-tk - control visual elements of mash window
load tk
tk clear
tk def button name value
tk def ibutton name value image
tk def menu name
tk def item menu name value
tk dialog title mesg default label ...
tk dump [ name ... ]
tk env
tk file title dir pattern ...
tk geom
tk layout [ name ... ]
tk notice message
tk sel
tk sget
tk sput string
tk string mesg
tk taskbar string
tk text
Tk is a loadable builtin for mash. It provides a set of primitives for customizing a mash window and building fairly sophisticated graphical functions. It is currently implemented as a single command with a variety of subcommands. For the tk command to work, mash must have been started using wm/wmmash. In the following descriptions, references to return values indicate strings put on a command's standard output.
The def subcommand is used to define graphical pushbuttons
and menus. The def button and def ibutton commands are used to
define pushbuttons labelled with text or graphical icons, respectively. The
name parameter is used to label buttons, and to layout both buttons
and ibuttons. Value is a command to be executed when the button is
clicked, and must be quoted if it contains white space. Image is the
name of a bitmap file; it is looked for in /icon/tk, unless the name
begins with which suppresses prepending /icon/tk.
Def menu is used to name and label menu buttons, and def item
specifies items within the corresponding pulldown menus. In def item,
menu is a name supplied on a def menu subcommand, name
is the label for this menu item, and value is a command to execute
when this menu item is selected. All the items in a menu are simple command
buttons; there is no provision for any other kind of control, or for
cascading menus.
The layout subcommand creates and makes visible a menu bar, using menus
and buttons defined with def subcommands. The current components, if
any, are removed first, so layout with no parameters just removes all the
current buttons and menus from the mash window. The components are
laid out from left to right, in the order presented in the layout
subcommand. A copy of the current mash environment is made, and
commands executed as a result of clicking buttons or selecting menu items
are executed in that environment. For example, variables will have the
values they had when the layout was done.
The env subcommand can be used to make a new copy of the environment
for use by button or menu actions.
The notice subcommand pops up a window containing
message and a single button to dismiss the window. The icon displayed
in the window is /icons/tk/error. No value is returned by
notice.
The dialog subcommand is more complex; title is used to name the
window, and multiple buttons labelled according to the label
parameter(s) are provided. Default is the number of the button which
is the default choice. The leftmost button is numbered 0. When the user
selects one of the buttons, the dialog box is popped down and the number of
the button selected is returned.
The file subcommand pops up a standard Inferno file selection box.
Dir specifies the initial directory to display, and pattern specifies
which non-directory files to include in the list of files. If the Cancel
button in the file dialog is clicked, no value is returned. If a file is
selected and the Exit button is clicked, the full pathname of the file is
returned, complete with final / if the file is a directory. Double
clicking on a non-directory file in the list will likewise return that
file's path. Double clicking on a directory in the list will display the
contents of that directory.
The string subcommand pops up a small window with mesg as the
label of a text field. Characters typed into the text field, up to but not
including ENTER, are returned.
The sel subcommand returns whatever is currently selected.
When typing into the shell's window, nothing is selected, so nothing is
returned. However, if invoked via a pushbutton and there is a selection, it
is returned.
The sput subcommand puts string into the snarf buffer maintained
by the window manager, and the sget subcommand retrieves and returns
the current contents of the snarf buffer. This provides a way to pass text
between the shell and other applications. The Snarf and Paste buttons on the
popup menu associated with mouse button two can also be used to do this.
The taskbar subcommand lets you put string in the
title bar of the mash window. The old value is returned.
The text subcommand returns the contents of the mash window.
The clear subcommand removes all text from the window.
The dump subcommand returns the mash-tk commands needed to
define the buttons and menus currently defined, and to recreate the
currently visible set of buttons and menus, or, if dump has
parameters, the commands needed to define the buttons and menus named by the
parameters.
The geom subcommand returns the position of the upper left corner of
the mash window relative to the upper left corner of the Inferno
screen.
/appl/cmd/mash/tk.b