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304 lines
9.5 KiB
HTML
304 lines
9.5 KiB
HTML
15 years ago
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<TITLE>canvasprintbox - Create and manipulate a canvas print box widget</TITLE>
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<H1>canvasprintbox - Create and manipulate a canvas print box widget</H1>
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</pre><H2>SYNOPSIS</H2>
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<B>canvasprintbox<I> <I>pathName </I>?<I>options</I>?
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</pre><H2>INHERITANCE</H2>
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itk::Widget <- Canvasprintbox
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</pre><H2>STANDARD OPTIONS</H2>
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<P>
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<table cellpadding=5>
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<td valign=top>
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<B>activeBackground</B><br>
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<B>foreground</B><br>
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<B>insertBackground</B><br>
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<B>insertWidth</B><br>
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<B>selectBackground</B><br>
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</td>
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<td valign=top>
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<B>background</B><br>
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<B>highlightBackground</B><br>
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<B>insertBorderWidth</B><br>
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<B>relief</B><br>
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<B>selectBorderWidth</B><br>
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</td>
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<td valign=top>
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<B>borderWidth</B><br>
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<B>highlightColor</B><br>
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<B>insertOffTime</B><br>
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<B>repeatDelay</B><br>
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<B>selectForeground</B><br>
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</td>
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<td valign=top>
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<B>cursor</B><br>
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<B>highlightThickness</B><br>
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<B>insertOnTime</B><br>
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<B>repeatInterval</B><br>
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</td>
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</table>
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<P>
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See the <A HREF="http://www.sco.com/Technology/tcl/man/tk_man/options.n.html"> "options" </A> manual entry for details on the standard options.
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</pre><H2>ASSOCIATED OPTIONS</H2>
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<UL>
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</UL>
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<P>
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</pre><H2>WIDGET-SPECIFIC OPTIONS</H2>
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<P>
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<pre>
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Name: <B>filename</B>
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Class: <B>FileName</B>
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Command-Line Switch: <B>-filename</B>
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</pre>
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<UL>
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The file to write the postscript output to (Only when output
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is set to "file"). If posterizing is turned on and <B>hpagecnt</B>
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and/or <B>vpagecnt</B> is more than 1, x.y is appended to the filename
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where x is the horizontal page number and y the vertical page number.
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</UL>
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<P>
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<pre>
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Name: <B>hpagecnt</B>
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Class: <B>PageCnt</B>
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Command-Line Switch: <B>-hpagecnt</B>
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</pre>
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<UL>
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Is used in combination with <B>posterize</B> to determine over
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how many pages the output should be distributed. This
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attribute specifies how many pages should be used horizontaly.
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Any change to this attribute will automatically update the "stamp".
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Defaults to 1.
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</UL>
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<P>
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<pre>
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Name: <B>orient</B>
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Class: <B>Orient</B>
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Command-Line Switch: <B>-orient</B>
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</pre>
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<UL>
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Determines the orientation of the output to the printer (or file).
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It can take the value "portrait" or "landscape" (default). Changes
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to this attribute will be reflected immediately in the "stamp".
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Defaults to "landscape" but will be changed automaticaly to the value
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deemed appropiate for the current canvas. Setting this attribute
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when the canvasprintbox is first constructed (instead of using the
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"configure" method) will turn off the auto adjustment of this attribute.
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</UL>
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<P>
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<pre>
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Name: <B>output</B>
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Class: <B>Output</B>
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Command-Line Switch: <B>-output</B>
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</pre>
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<UL>
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Specifies where the postscript output should go: to the printer
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or to a file. Can take on the values "printer" or "file".
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The corresponding entry-widget will reflect the contents of
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either the <B>printcmd</B> attribute or the <B>filename</B> attribute.
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Defaults to "printer".
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</UL>
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<P>
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<pre>
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Name: <B>pageSize</B>
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Class: <B>PageSize</B>
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Command-Line Switch: <B>-pagesize</B>
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</pre>
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<UL>
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The pagesize the printer supports. Changes to this attribute
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will be reflected immediately in the "stamp".
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Defaults to "a4".
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</UL>
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<P>
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<pre>
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Name: <B>posterize</B>
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Class: <B>Posterize</B>
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Command-Line Switch: <B>-posterize</B>
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</pre>
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<UL>
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Indicates if posterizing is turned on or not. Posterizing
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the output means that it is possible to distribute the
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output over more than one page. This way it is possible to
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print a canvas/region which is larger than the specified
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pagesize without stretching. If used in combination with
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stretching it can be used to "blow up" the contents of a
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canvas to as large as size as you want (See attributes:
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hpagecnt and vpagecnt). Any change to this attribute will
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automatically update the "stamp".
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Defaults to 0.
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</UL>
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<P>
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<pre>
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Name: <B>printCmd</B>
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Class: <B>PrintCmd</B>
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Command-Line Switch: <B>-printcmd</B>
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</pre>
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<UL>
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The command to execute when printing the postscript output.
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The command will get the postscript directed to its standard
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input (Only when output is set to "printer").
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Defaults to "lpr".
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</UL>
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<P>
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<pre>
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Name: <B>printRegion</B>
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Class: <B>PrintRegion</B>
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Command-Line Switch: <B>-printregion</B>
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</pre>
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<UL>
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A list of four coordinates specifying which part of the canvas to print.
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An empty list means that the canvas' entire <B>scrollregion</B> should be
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printed. Any change to this attribute will automatically update the "stamp".
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Defaults to an empty list.
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</UL>
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<P>
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<pre>
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Name: <B>stretch</B>
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Class: <B>Stretch</B>
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Command-Line Switch: <B>-stretch</B>
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</pre>
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<UL>
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Determines if the output should be stretched to fill the
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page (as defined by the attribute pagesize) as large as
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possible. The aspect-ratio of the output will be retained
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and the output will never fall outside of the boundaries
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of the page.
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Defaults to 0 but will be changed automaticaly to the value
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deemed appropiate for the current canvas. Setting this attribute
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when the canvasprintbox is first constructed (instead of using the
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"configure" method) will turn off the auto adjustment of this attribute.
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</UL>
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<P>
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<pre>
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Name: <B>vPageCnt</B>
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Class: <B>PageCnt</B>
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Command-Line Switch: <B>-vpagecnt</B>
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</pre>
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<UL>
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Is used in combination with "posterize" to determine over
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how many pages the output should be distributed. This
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attribute specifies how many pages should be used verticaly.
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Any change to this attribute will automatically update the "stamp".
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Defaults to 1.
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</UL>
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<P>
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</pre><HR>
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</pre><H2>DESCRIPTION</H2>
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<P>
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Implements a print box for printing the contents of a canvas widget
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to a printer or a file. It is possible to specify page orientation, the
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number of pages to print the image on and if the output should be
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stretched to fit the page. Options exist to control the appearance and
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actions of the widget.
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</pre><H2>METHODS</H2>
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<P>
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The <B>canvasprintbox</B> command creates a new Tcl command whose
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name is <I>pathName</I>. This
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command may be used to invoke various
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operations on the widget. It has the following general form:
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<pre>
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<I>pathName option </I>?<I>arg arg ...</I>?
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</pre>
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<I>Option</I> and the <I>arg</I>s
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determine the exact behavior of the command. The following
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commands are possible for canvasprintbox widgets:
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</pre><H2>WIDGET-SPECIFIC METHODS</H2>
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<DL>
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<DT> <I>pathName <B>cget</B> <I>option</I>
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</I></B>
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<DD> Returns the current value of the configuration option given
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by <I>option</I>.
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<I>Option</I> may have any of the values accepted by the <B>canvasprintbox</B>
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command.
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</DL>
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<DL>
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<DT> <I>pathName</I> <B>configure</B> ?<I>option</I>? ?<I>value option value ...</I>?
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</I></B>
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<DD> Query or modify the configuration options of the widget.
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If no <I>option</I> is specified, returns a list describing all of
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the available options for <I>pathName</I> (see <B>Tk_ConfigureInfo</B> for
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information on the format of this list). If <I>option</I> is specified
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with no <I>value</I>, then the command returns a list describing the
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one named option (this list will be identical to the corresponding
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sublist of the value returned if no <I>option</I> is specified). If
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one or more <I>option-value</I> pairs are specified, then the command
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modifies the given widget option(s) to have the given value(s); in
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this case the command returns an empty string.
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<I>Option</I> may have any of the values accepted by the <B>canvasprintbox</B>
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command.
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</DL>
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<DL>
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<DT> <I>pathName</I> <B>getoutput</B>
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</I></B>
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<DD> Returns the value of the <B>printercmd</B> or <B>filename</B> option
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depending on the current setting of <B>output</B>.
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</DL>
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<DL>
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<DT> <I>pathName</I> <B>print</B>
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</I></B>
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<DD> Perfrom the actual printing of the canvas using the current settings of
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all the attributes. Returns a boolean indicating wether the printing was
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successful or not.
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</DL>
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<DL>
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<DT> <I>pathName</I> <B>refresh</B>
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</I></B>
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<DD> Retrieves the current value for all edit fields and updates
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the stamp accordingly. Is useful for Apply-buttons.
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</DL>
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<DL>
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<DT> <I>pathName</I> <B>setcanvas</B> <I>canvas</I>
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</I></B>
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<DD> This is used to set the <I>canvas</I> that has to be printed.
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A stamp-sized copy will automatically be drawn to show how the
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output would look with the current settings.
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</DL>
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<DL>
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<DT> <I>pathName <B>stop</B>
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</I></B>
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<DD> Stops the drawing of the "stamp". I'm currently unable to detect
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when a Canvasprintbox gets destroyed or withdrawn. It's therefore
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advised that you perform a stop before you do something like that.
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</DL>
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</pre><H2>COMPONENTS</H2>
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<P>
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<pre>
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Name: <B>prtflentry</B>
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Class: <B>Entry</B>
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</pre>
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<UL>
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The prtflentry component is the entry field for user input of the
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<B>filename</B> or <B>printer</B> command (depending on the value of
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<B>output</B>).
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</UL>
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<P>
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<pre>
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Name: <B>hpcnt</B>
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Class: <B>Entry</B>
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</pre>
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<UL>
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The hpcnt component is the entry field for user input of the number of
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pages to use horizontaly when <B>posterize</B> is turned on.
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</UL>
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</table>
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<pre>
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Name: <B>vpcnt</B>
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Class: <B>Entry</B>
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</pre>
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<UL>
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The vpcnt component is the entry field for user input of the number of
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pages to use verticaly when <B>posterize</B> is turned on.
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</UL>
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</table>
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</pre><H2>EXAMPLE</H2>
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<pre>
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canvasprintbox .fsb -orient landscape -stretch 1
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pack .fsb -padx 10 -pady 10 -fill both -expand yes
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</pre>
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</pre><H2>AUTHOR</H2>
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Tako Schotanus
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</pre><H2>KEYWORDS</H2>
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canvasprintbox, widget
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