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<TITLE>Magic-7.3 Command Reference</TITLE>
<BODY BACKGROUND=graphics/blpaper.gif>
<H1> <IMG SRC=graphics/magic_title2.gif ALT="Magic VLSI Layout Tool Version 7.3">
<IMG SRC=graphics/magic_OGL_sm.gif ALIGN="top" ALT="*"> </H1>
<H2>tool</H2>
<HR>
Change the layout "tool" (button bindings). This page describes the
version of the command used by the Tcl version of magic.
<HR>
<H3>Shortcuts:</H3>
<BLOCKQUOTE>
Key macro <I>space</I> implements the command <B>tool</B>.<BR>
Key macro <I>shift-space</I> implements the command <B>tool box</B>.
</BLOCKQUOTE>
<H3>Usage:</H3>
<BLOCKQUOTE>
<B>tool</B> [<I>name</I>|<B>info</B>] <BR><BR>
<BLOCKQUOTE>
where <I>name</I> may be one of <B>box</B>, <B>wiring</B>,
<B>netlist</B>, or <B>pick</B>.
</BLOCKQUOTE>
</BLOCKQUOTE>
<H3>Summary:</H3>
<BLOCKQUOTE>
The <B>tool</B> command selects or queries the mode of operation
of the mouse buttons in the layout window. Each <I>tool</I>
type has a unique set of button bindings. <P>
Without arguments, the <B>tool</B> command selects the next
tool type in round-robin fashion. With a tool type as argument,
the button bindings switch to those for the indicated tool.
With the <B>info</B> option, a summary of the commands bound to
each mouse button is given for the current tool. <P>
The default mouse bindings for each of the three tools is as follows:
<UL>
<LI><I>Box Tool</I>
<DL>
<DT> <B>left</B>
<DD> Move the box so its lower-left corner is at cursor position
<DT> <B>right</B>
<DD> Resize box by moving upper-right corner to cursor position
<DT> <B>middle</B>
<DD> Paint box area with material underneath cursor
</DL>
In addition, you can move or resize the box by different corners
by pressing left or right, holding it down, moving the cursor
near a different corner and clicking the other (left or right)
button down then up without releasing the initial button.
<LI><I>Wiring Tool</I>
<DL>
<DT> <B>left</B>
<DD> Pick wire material and size from under the cursor and begin
interactive wire placement.
<DT> <B>right</B>
<DD> Cancel interactive wire placement.
<DT> <B>middle</B>
<DD> Place a wire at the position shown by the interactive wire
tool highlight box, and continue interactive wire placement.
<DT> <I>shift-</I><B>left</B>
<DD> Change the type of wire to the next plane (e.g., metal1 to metal2)
<DT> <I>shift-</I><B>right</B>
<DD> Change the type of wire to the previous plane (e.g., metal2 to metal1)
<DT> <I>shift-</I><B>middle</B>
<DD> Place a contact at the current location and switch to the wire
type on the next plane.
<DT> <B>scrollwheel up<B>
<DD> Increase the wire size by one unit
<DT> <B>scrollwheel down<B>
<DD> Decrease the wire size by one unit
</DL>
Note that the methods for the wire tool differ significantly between
Tcl-based magic, with its interactive capabilities, and non-Tcl-based
magic.
<LI><I>Netlist Tool</I>
<DL>
<DT> <B>left</B>
<DD> Select the net containing the terminal nearest the cursor
<DT> <B>right</B>
<DD> Toggle the terminal nearest the cursor into/out of current net
<DT> <B>middle</B>
<DD> Join current net and net containing terminal nearest the cursor
</DL>
<LI><I>Pick Tool</I>
<DL>
<DT> <B>left</B>
<DD> Remove the current selection from the layout, place it
in the pick buffer, and follow the cursor.
<DT> <B>right</B>
<DD> Cancel the current pick buffer and stop following the
cursor.
<DT> <B>middle</B>
<DD> Place a copy of the pick buffer at the current location,
and continue following the cursor.
<DT> <I>shift-</I><B>middle</B>
<DD> Make a copy of the current selection from the layout,
place it in the pick buffer, and follow the cursor.
</DL>
The pick tool is an interactive feature only available in the
Tcl-based version of magic.
</UL>
</BLOCKQUOTE>
<H3>Implementation Notes:</H3>
<BLOCKQUOTE>
<B>tool</B> is implemented as a Tcl script in the Tcl-based
version of <B>magic</B>. The command duplicates the function of
the original <B>tool</B> command, which remains for the non-Tcl
based version of magic, and which performs the function of
changing the cursor style in the window. <P>
Button functions for each "tool" may be added to or modified in
the startup scripts. The Tcl variable <B>Opts(tool)</B> contains
the current tool name, and may be used by a user <B>tool</B>
procedure overriding the default one in "tools.tcl".
</BLOCKQUOTE>
<H3>See Also:</H3>
<BLOCKQUOTE>
<A HREF=tool.html><B>tool (non-Tcl version)</B></A>
</BLOCKQUOTE>
<P><IMG SRC=graphics/line1.gif><P>
<TABLE BORDER=0>
<TR>
<TD> <A HREF=commands.html>Return to command index</A>
</TR>
</TABLE>
<P><I>Last updated:</I> December 4, 2005 at 5:25pm <P>
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