HELP VEDWINSUN Ben Rubinstein, Feb 1986
Updated by R.J.Duncan, Oct 1990
Using VED in a SunView "shelltool" window.
CONTENTS - (Use <ENTER> g to access required sections)
-- Introduction
-- VED Window Commands-- Introduction -------------------------------------------------------
When you run VED in a "shelltool" window, it will normally recognise
this fact automatically and adjust the size of its display to fit the
size of the window. This does not require any special initialisation:
shelltool sets the value of the TERM environment variable to "sun" and
this in turn (without any instructions to the contrary) causes VED to
load LIB * VEDSUN. This library configures VED for use with the Sun
terminal emulator and defines a keymap appropriate to the Sun keyboard:
see HELP * VEDSUN for more details. The library works out for itself
whether it is being run from the console or from a shelltool window and
determines the initial window size.
If this doesn't seem to be working, check first of all that the TERM
environment variable is correctly set and that there is nothing in your
"vedinit.p" file which is causing VED to load some other library in
preference to VEDSUN. If neither of these apply, it may be that VED is
failing to communicate properly with the terminal emulator. You can
force VED to configure itself for shelltool by calling the procedure
vedwinsun();
Adding this command into your "vedinit.p" file will make VED configure
itself for a shelltool window every time it is invoked.
Once the configuration has been properly completed, VED will recompute
the window size (and adjust the screen display if necessary) each time
it is called from the POPLOG top-level, and whenever it is re-entered
from the shell after a suspend. VED will not respond automatically to
window-size changes which occur whilst editing: you must explicitly
request a resize in this case, by using either the command
<ENTER> adjust
(described below) or the procedure
vedsunrefresh();
If you are using the left-hand keypad with VED, this procedure is
normally bound to the key sequence ESC L4.
-- VED Window Commands ------------------------------------------------
The VEDWINSUN library defines three new VED commands for manipulating
the shelltool window in which VED is running:
<ENTER> adjust
<ENTER> stretch
<ENTER> resize
These are defined as follows:
ved_adjust [procedure]
Interrogates the window manager to determine the size of the
shelltool window and adjusts the display to fit the new size.
Use this command to redraw the screen after changing the window
size.
ved_stretch [procedure]
Allows you to change the size of the window using the mouse. The
effect is the same as if you had selected the 'Resize' option
from the shelltool frame menu, but VED knows you have changed
the window size and will adjust itself to fit automatically.
ved_resize [ SIZE_SPEC ] [procedure]
Resizes the shelltool window and adjusts the VED display
accordingly.
The SIZE_SPEC argument is optional: without it, the window will
be changed to a default size, usually 34 rows by 80 columns. You
can change this default size in either of two ways:
(1) if the variable -vedwin_default_size- is a two-element
vector, then RESIZE will use this as the default size:
the first element will be taken as the number of lines,
the second as the number of columns. So the declaration
vars vedwin_default_size = {40 80};
will change the default size to be 40 lines by 80
columns. Both elements in the vector must of course be
positive integers.
(2) if the variable -vedwin_file_sizes- is a list, it is
assumed to describe a mapping from file extensions
(strings) to size vectors (as described above). The
RESIZE command takes as the default any size which
matches the extension of the current file. The
declaration
vars vedwin_file_sizes = ['wide' {10 132}];
causes RESIZE to use a default window size of 10x132 for
any file whose name ends in '.wide'. This mechanism
takes precedence over the default given by
-vedwin_default_size-.
If SIZE_SPEC is given, it should be a pair of numbers of the
form:
LINES, COLUMNS
which determine how big the new display should be. For example,
<ENTER> resize 40, 132
sets the window size to display 40 lines, each of 132 columns.
Either of the two components of SIZE_SPEC may be omitted, in
which case the corresponding dimension of the window is left
unchanged, but where the number of lines is omitted, the comma
must still be given to prevent ambiguity. Thus
<ENTER> resize 72
adjusts the window to display 72 lines, while
<ENTER> resize ,72
adjusts the window to display 72 columns.
The RESIZE command may reduce the actual size of a window if the
requested size is too big to be fully displayed on screen. You
can find out the maximum window size which the command will
allow by doing
<ENTER> resize ?
Computation of this maximum size works on the assumption that
you are using the standard font. If you are using a different
sized font, you can force RESIZE to try to determine the size of
font and adjust the maximum window size accordingly by doing
<ENTER> resize ??
--- C.all/help/vedwinsun
--- Copyright University of Sussex 1990. All rights reserved. ----------