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#  Copyright (C) 1999-2018
#  Smithsonian Astrophysical Observatory, Cambridge, MA, USA
#  For conditions of distribution and use, see copyright notice in "copyright"

package provide DS9 1.0

proc PlotPSPrint {varname} {
    upvar #0 $varname var
    global $varname

    if {[PlotPrintDialog]} {
	if {[catch {PlotPostScript $varname} printError]} {
	    Error "[msgcat::mc {An error has occurred while printing}] $printError"
	}
    }
}

proc PlotPostScript {varname} {
    upvar #0 $varname var
    global $varname

    set tt $var(graph,total)
    set cc $var(graph,current)

    global ps
    global ds9

    for {set ii 1} {$ii<=$tt} {incr ii} {
	# set postscript fonts
	$var(graph$ii) configure \
	    -font "$var(graph,title,family) $var(graph,title,size) $var(graph,title,weight) $var(graph,title,slant)"

	$var(graph$ii) xaxis configure \
	    -tickfont "$var(axis,font,family) $var(axis,font,size) $var(axis,font,weight) $var(axis,font,slant)" \
	    -titlefont "$var(axis,title,family) $var(axis,title,size) $var(axis,title,weight) $var(axis,title,slant)"

	$var(graph$ii) yaxis configure \
	    -tickfont "$var(axis,font,family) $var(axis,font,size) $var(axis,font,weight) $var(axis,font,slant)" \
	    -titlefont "$var(axis,title,family) $var(axis,title,size) $var(axis,title,weight) $var(axis,title,slant)"

	$var(graph$ii) legend configure \
	    -font "$var(legend,font,family) $var(legend,font,size) $var(legend,font,weight) $var(legend,font,slant)" \
	    -titlefont "$var(legend,title,family) $var(legend,title,size) $var(legend,title,weight) $var(legend,title,slant)"

	set options "-decorations false"

	# Color
	switch -- $ps(color) {
	    rgb -
	    cmyk {append options " -greyscale no"}
	    gray {append options " -greyscale yes"}
	}

	# can't trust 'tk scaling'
	switch $ds9(wm) {
	    x11 -
	    win32 {
		set scaling [tk scaling]
		if {$scaling == Inf} {
		    set scaling 1.334
		}
	    }
	    aqua {set scaling 1.4}
	}

	# Size
	set ww [expr [winfo width $var(top)]*$ps(scale)/100./$scaling]
	set hh [expr [winfo height $var(top)]*$ps(scale)/100./$scaling]
	append options " -width $ww -height $hh"

	# Page size
	switch -- $ps(size) {
	    letter {append options " -paperwidth 8.5i -paperheight 11.i"}
	    legal {append options " -paperwidth 8.5i -paperheight 14.i"}
	    tabloid {append options " -paperwidth 11i -paperheight 17.i"}
	    poster {append options " -paperwidth 36.i -paperheight 48.i"}
	    a4 {append options " -paperwidth 195m -paperheight 282m"}
	    other {
		if {$ps(width) != {} && $ps(height) != {}} {
		    set pgww "[append ps(width) i]"
		    set pghh "[append ps(height) i]"
		    append options " -paperwidth $pgww -paperheight pghh"
		}
	    }
	    othermm {
		if {$ps(width) != {} && $ps(height) != {}} {
		    set pgww "[append ps(width) m]"
		    set pghh "[append ps(height) m]"
		    append options " -paperwidth $pgww -paperheight pghh"
		}
	    }
	}

	# Orientation
	switch -- $ps(orient) {
	    portrait {append options " -landscape false"}
	    landscape {append options " -landscape true"}
	}

	if {$ps(dest) == "file" && $ps(filename) != {}} {
	    eval $var(graph$ii) postscript output $ps(filename) $options
	} else {
	    set ch [open "| $ps(cmd)" w]
	    puts $ch [eval $var(graph$ii) postscript output $options]
	    close $ch
	}

	# reset fonts
	$var(graph$ii) configure \
	    -font "{$ds9($var(graph,title,family))} $var(graph,title,size) $var(graph,title,weight) $var(graph,title,slant)"

	$var(graph$ii) xaxis configure \
	    -tickfont "{$ds9($var(axis,font,family))} $var(axis,font,size) $var(axis,font,weight) $var(axis,font,slant)" \
	    -titlefont "{$ds9($var(axis,title,family))} $var(axis,title,size) $var(axis,title,weight) $var(axis,title,slant)"

	$var(graph$ii) yaxis configure \
	    -tickfont "{$ds9($var(axis,font,family))} $var(axis,font,size) $var(axis,font,weight) $var(axis,font,slant)" \
	    -titlefont "{$ds9($var(axis,title,family))} $var(axis,title,size) $var(axis,title,weight) $var(axis,title,slant)"

	$var(graph$ii) legend configure \
	    -font "{$ds9($var(legend,font,family))} $var(legend,font,size) $var(legend,font,weight) $var(legend,font,slant)" \
	    -titlefont "{$ds9($var(legend,title,family))} $var(legend,title,size) $var(legend,title,weight) $var(legend,title,slant)"
    }
}