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спецификации, руководства, описания, API
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спецификации, руководства, описания, API
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iwidgets::canvasprintbox(1)                    [incr Widgets]                    iwidgets::canvasprintbox(1)



____________________________________________________________________________________________________________

NAME
       iwidgets::canvasprintbox - Create and manipulate a canvas print box widget

SYNOPSIS
       iwidgets::canvasprintbox pathName ?options?

INHERITANCE
       itk::Widget <- iwidgets::Canvasprintbox

STANDARD OPTIONS
       activeBackground  background           borderWidth      cursor
       foreground        highlightBackground  highlightColor   highlightThickness
       insertBackground  insertBorderWidth    insertOffTime    insertOnTime
       insertWidth       relief               repeatDelay      repeatInterval
       selectBackground  selectBorderWidth    selectForeground

       See the "options" manual entry for details on the standard options.

ASSOCIATED OPTIONS
WIDGET-SPECIFIC OPTIONS
       Name:           filename
       Class:          FileName
       Command-Line Switch:           -filename

              The file to write the postscript output to (Only when output is set to "file"). If posterizing
              is turned on and hpagecnt and/or vpagecnt is more than 1, x.y  is  appended  to  the  filename
              where x is the horizontal page number and y the vertical page number.

       Name:           hpagecnt
       Class:          PageCnt
       Command-Line Switch:           -hpagecnt

              Is  used  in  combination with posterize to determine over how many pages the output should be
              distributed. This attribute specifies how many pages should be used horizontaly.   Any  change
              to this attribute will automatically update the "stamp".  Defaults to 1.

       Name:           orient
       Class:          Orient
       Command-Line Switch:           -orient

              Determines  the  orientation  of  the  output to the printer (or file).  It can take the value
              "portrait" or "landscape" (default). Changes to this attribute will be  reflected  immediately
              in  the "stamp".  Defaults to "landscape" but will be changed automaticaly to the value deemed
              appropiate for the current canvas. Setting this attribute when  the  canvasprintbox  is  first
              constructed  (instead  of  using  the "configure" method) will turn off the auto adjustment of
              this attribute.

       Name:           output
       Class:          Output
       Command-Line Switch:           -output

              Specifies where the postscript output should go: to the printer or to a file. Can take on  the
              values  "printer"  or  "file".   The  corresponding  entry-widget will reflect the contents of
              either the printcmd attribute or the filename attribute.  Defaults to "printer".

       Name:           pageSize
       Class:          PageSize
       Command-Line Switch:           -pagesize

              The pagesize the printer supports. Changes to this attribute will be reflected immediately  in
              the "stamp".  Defaults to "a4".

       Name:           posterize
       Class:          Posterize
       Command-Line Switch:           -posterize

              Indicates if posterizing is turned on or not. Posterizing the output means that it is possible
              to distribute the output over more than one page. This way it is  possible  to  print  a  can-
              vas/region which is larger than the specified pagesize without stretching. If used in combina-tion combination
              tion with stretching it can be used to "blow up" the contents of a canvas to as large as  size
              as  you  want (See attributes: hpagecnt and vpagecnt). Any change to this attribute will auto-matically automatically
              matically update the "stamp".  Defaults to 0.

       Name:           printCmd
       Class:          PrintCmd
       Command-Line Switch:           -printcmd

              The command to execute when printing the postscript output.  The command will  get  the  post-script postscript
              script  directed  to  its  standard input (Only when output is set to "printer").  Defaults to
              "lpr".

       Name:           printRegion
       Class:          PrintRegion
       Command-Line Switch:           -printregion

              A list of four coordinates specifying which part of the canvas to print.  An empty list  means
              that  the  canvas'  entire  scrollregion  should be printed. Any change to this attribute will
              automatically update the "stamp".  Defaults to an empty list.

       Name:           stretch
       Class:          Stretch
       Command-Line Switch:           -stretch

              Determines if the output should be stretched to fill the page (as  defined  by  the  attribute
              pagesize) as large as possible. The aspect-ratio of the output will be retained and the output
              will never fall outside of the boundaries of the page.  Defaults to  0  but  will  be  changed
              automaticaly  to  the  value  deemed appropiate for the current canvas. Setting this attribute
              when the canvasprintbox is first constructed (instead of using the  "configure"  method)  will
              turn off the auto adjustment of this attribute.

       Name:           vPageCnt
       Class:          PageCnt
       Command-Line Switch:           -vpagecnt

              Is  used in combination with "posterize" to determine over how many pages the output should be
              distributed. This attribute specifies how many pages should be used verticaly.  Any change  to
              this attribute will automatically update the "stamp".  Defaults to 1.

____________________________________________________________________________________________________________


DESCRIPTION
       Implements  a  print  box  for printing the contents of a canvas widget to a printer or a file. It is
       possible to specify page orientation, the number of pages to print the image on  and  if  the  output
       should  be stretched to fit the page. Options exist to control the appearance and actions of the wid-get. widget.
       get.


METHODS
       The iwidgets::canvasprintbox command creates a new Tcl command whose name is pathName.  This  command
       may be used to invoke various operations on the widget.  It has the following general form:

              pathName option ?arg arg ...?

       Option and the args determine the exact behavior of the command.  The following commands are possible
       for canvasprintbox widgets:


WIDGET-SPECIFIC METHODS
       pathName cget option
              Returns the current value of the configuration option given by option.  Option may have any of
              the values accepted by the iwidgets::canvasprintbox command.

       pathName configure ?option? ?value option value ...?
              Query or modify the configuration options of the widget.  If no option is specified, returns a
              list describing all of the available options for pathName (see Tk_ConfigureInfo  for  informa-tion information
              tion  on  the  format  of  this list).  If option is specified with no value, then the command
              returns a list describing the one named option (this list will be identical to the correspond-ing corresponding
              ing  sublist  of  the  value returned if no option is specified).  If one or more option-value
              pairs are specified, then the command modifies the given widget option(s) to  have  the  given
              value(s);   in this case the command returns an empty string.  Option may have any of the val-ues values
              ues accepted by the iwidgets::canvasprintbox command.

       pathName getoutput
              Returns the value of the printercmd or filename option depending on  the  current  setting  of
              output.

       pathName print
              Perfrom  the  actual  printing of the canvas using the current settings of all the attributes.
              Returns a boolean indicating wether the printing was successful or not.

       pathName refresh
              Retrieves the current value for all edit fields and updates the stamp accordingly.  Is  useful
              for Apply-buttons.

       pathName setcanvas canvas
              This  is used to set the canvas that has to be printed.  A stamp-sized copy will automatically
              be drawn to show how the output would look with the current settings.

       pathName stop
              Stops the drawing of the "stamp". I'm currently unable to detect when  a  Canvasprintbox  gets
              destroyed or withdrawn. It's therefore advised that you perform a stop before you do something
              like that.

COMPONENTS
       Name:           prtflentry
       Class:          Entry

              The prtflentry component is the entry field for user input of the filename or printer  command
              (depending on the value of output).

       Name:           hpcnt
       Class:          Entry

              The  hpcnt  component is the entry field for user input of the number of pages to use horizon-taly horizontaly
              taly when posterize is turned on.
              Name:           vpcnt
              Class:          Entry

              The vpcnt component is the entry field for user input of the number of pages to use  verticaly
              when posterize is turned on.


EXAMPLE
              package require Iwidgets 4.0
              iwidgets::canvasprintbox .fsb -orient landscape -stretch 1
              pack .fsb -padx 10 -pady 10 -fill both -expand yes


AUTHOR
       Tako Schotanus

       Tako.Schotanus@bouw.tno.nl

KEYWORDS
       canvasprintbox, widget



Tk                                                                               iwidgets::canvasprintbox(1)

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