85 lines
3.2 KiB
HTML
85 lines
3.2 KiB
HTML
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<HTML>
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<HEAD>
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<STYLE type="text/css">
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H1 {color: black }
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H2 {color: maroon }
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H3 {color: #007090 }
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A.head:link {color: #0060a0 }
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A.head:visited {color: #3040c0 }
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A.head:active {color: white }
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A.head:hover {color: yellow }
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A.red:link {color: red }
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A.red:visited {color: maroon }
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A.red:active {color: yellow }
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</STYLE>
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</HEAD>
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<TITLE>Magic-7.3 Command Reference</TITLE>
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<BODY BACKGROUND=graphics/blpaper.gif>
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<H1> <IMG SRC=graphics/magic_title2.gif ALT="Magic VLSI Layout Tool Version 7.3">
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<IMG SRC=graphics/magic_OGL_sm.gif ALIGN="top" ALT="*"> </H1>
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<H2>setpoint</H2>
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<HR>
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Set the value of the cursor reference point in a specific window.
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<HR>
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<H3>Usage:</H3>
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<BLOCKQUOTE>
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<B>setpoint</B> [<I>x y</I> [<I>window_id</I>] <BR><BR>
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<BLOCKQUOTE>
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where <I>x</I> and <I>y</I> are screen coordinates and
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<I>window_id</I> is the identifying number for a layout
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window.
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</BLOCKQUOTE>
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</BLOCKQUOTE>
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<H3>Summary:</H3>
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<BLOCKQUOTE>
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The <B>setpoint</B> command forces the reference point for a specific
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window. Each command that executes relative to a window must be able
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to translate from the pointer position to a layout coordinate.
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Commands that are executed from a script or from the command-line
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may not have access to the pointer, but can set the reference point
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with this command so that the effect of the command is predictable. <P>
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Normally, in interactive this command is not used. However,
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scripts that open more than one window need to specify which one
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is to take the action of the command. In the Tcl/Tk version, this
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can be done by using the <I>tk_path_name</I> command to pass a
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command to a specific window. The non-Tcl/Tk version, and the Tcl/Tk
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version using the "-dnull" option on the command line (i.e., no
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graphics package initialized) must use the <B>setpoint</B> command
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to track windows. Although possible, it is generally a bad idea
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for a script running in batch mode ("-dnull") to create and access
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multiple windows, since the window structures have no useful
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function outside of a graphics environment. Nevertheless, it is
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important to realize that the <B>openwindow</B> command <I>will</I>
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generate multiple virtual windows in a batch-mode environment, and
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these can only be separately accessed using the <B>setpoint</B>
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command.
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</BLOCKQUOTE>
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<H3>Implementation Notes:</H3>
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<BLOCKQUOTE>
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<B>setpoint</B> is implemented as a built-in window command in <B>magic</B>.
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</BLOCKQUOTE>
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<H3>Bugs:</H3>
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<BLOCKQUOTE>
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The use of the window ID number is unique to this command and should
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be a window name like every other window-related command. Likewise,
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scripts would best make use of this command if the position were in
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layout coordinates, and <B>magic</B> translated them back to screen
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coordinates in the indicated window to set the reference point.
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</BLOCKQUOTE>
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<P><IMG SRC=graphics/line1.gif><P>
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<TABLE BORDER=0>
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<TR>
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<TD> <A HREF=commands.html>Return to command index</A>
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</TR>
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</TABLE>
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<P><I>Last updated:</I> December 4, 2005 at 9:02pm <P>
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</BODY>
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</HTML>
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