From cd558a8c4d33552748c389304cab1351e0dfab67 Mon Sep 17 00:00:00 2001
From: sls <sls>
Date: Thu, 23 Mar 1995 06:55:21 +0000
Subject: [PATCH] Initial checkin from tkinspect 5.1.6

---
 stl-lite/tkhtml.tcl | 534 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 534 insertions(+)
 create mode 100644 stl-lite/tkhtml.tcl

diff --git a/stl-lite/tkhtml.tcl b/stl-lite/tkhtml.tcl
new file mode 100644
index 0000000..a5be22b
--- /dev/null
+++ b/stl-lite/tkhtml.tcl
@@ -0,0 +1,534 @@
+#
+# $Id$
+#
+# This software is copyright (C) 1995 by the Lawrence Berkeley Laboratory.
+# 
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that: (1) source code distributions
+# retain the above copyright notice and this paragraph in its entirety, (2)
+# distributions including binary code include the above copyright notice and
+# this paragraph in its entirety in the documentation or other materials
+# provided with the distribution, and (3) all advertising materials mentioning
+# features or use of this software display the following acknowledgement:
+# ``This product includes software developed by the University of California,
+# Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
+# the University nor the names of its contributors may be used to endorse
+# or promote products derived from this software without specific prior
+# written permission.
+# 
+# THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+#
+# This code is based on Angel Li's (angel@flipper.rsmas.miami.edu) HTML
+# rendering code.
+#
+
+proc tkhtml_set_render_hook {hook} {
+    global tkhtml_priv
+    set tkhtml_priv(render_hook) $hook
+}
+
+proc tkhtml_set_image_hook {hook} {
+    global tkhtml_priv
+    set tkhtml_priv(image_hook) $hook
+}
+
+proc tkhtml_render {w html} {
+    global tkhtml_priv tkhtml_entity
+    $w config -state normal
+    $w delete 1.0 end
+    tkhtml_setup $w
+    set tkhtml_priv(continue_rendering) 1
+    tkhtml_set_tag
+    while {$tkhtml_priv(continue_rendering)} {
+	# normal state
+	while {[set len [string length $html]]} {
+	    # look for text up to the next <> element
+	    if [regexp -indices "^\[^<\]+" $html match] {
+		set text [string range $html 0 [lindex $match 1]]
+		tkhtml_append_text $text
+		set html \
+		    [string range $html [expr [lindex $match 1]+1] end]
+	    }
+	    # we're either at a <>, or at the eot
+	    if [regexp -indices "^<(\[^>\]+)>" $html match entity] {
+		set entity [string range $html [lindex $entity 0] \
+			    [lindex $entity 1]]
+		set cmd [string tolower [lindex $entity 0]]
+		if {[info exists tkhtml_entity($cmd)]} {
+		    tkhtml_do $cmd [lrange $entity 1 end]
+		}
+		set html \
+		    [string range $html [expr [lindex $match 1]+1] end]
+	    }
+	    if [info exists tkhtml_priv(render_hook)] {
+		eval $tkhtml_priv(render_hook) $len
+	    }
+	    if $tkhtml_priv(verbatim) break
+	}
+	# we reach here if html is empty, or verbatim is 1
+	if !$len break
+	# verbatim must be 1
+	# append text until a </pre> is reached
+	if {[regexp -indices -nocase $tkhtml_priv(verb_end_token) $html match]} {
+	    set text [string range $html 0 [expr [lindex $match 0]-1]]
+	    set html [string range $html [expr [lindex $match 1]+1] end]
+	} else {
+	    set text $html
+	    set html ""
+	}
+	tkhtml_append_text $text
+	if [info exists tkhtml_entity([string trim $tkhtml_priv(verb_end_token) <>])] {
+	    tkhtml_do [string trim $tkhtml_priv(verb_end_token) <>]
+	}
+    }
+    $w config -state disabled
+}
+
+proc tkhtml_defaults {} {
+    global tkhtml_priv
+    set tkhtml_priv(defaults_set) 1
+    set tkhtml_priv(default_font) times
+    set tkhtml_priv(fixed_font) courier
+    set tkhtml_priv(font_size) medium
+    set tkhtml_priv(small_points) "60 80 100 120 140 180 240"
+    set tkhtml_priv(medium_points) "80 100 120 140 180 240 360"
+    set tkhtml_priv(large_points) "100 120 140 180 240 360 480"
+    set tkhtml_priv(huge_points) "120 140 180 240 360 480 640"
+    set tkhtml_priv(ruler_height) 6
+    set tkhtml_priv(indent_incr) 4
+    set tkhtml_priv(w) {}
+    set tkhtml_priv(counter) -1
+}
+
+proc tkhtml_set_font {font size} {
+    global tkhtml_priv
+    set tkhtml_priv(default_font) $font
+    set tkhtml_priv(font) $font
+    set tkhtml_priv(font_size) $size
+}
+
+proc tkhtml_setup {w} {
+    global tkhtml_priv
+    if ![info exists tkhtml_priv(defaults_set)] tkhtml_defaults
+    set tkhtml_priv(font) $tkhtml_priv(default_font)
+    set tkhtml_priv(left) 0
+    set tkhtml_priv(left2) 0
+    set tkhtml_priv(right) 0
+    set tkhtml_priv(justify) L
+    set tkhtml_priv(weight) 0
+    set tkhtml_priv(slant) 0
+    set tkhtml_priv(underline) 0
+    set tkhtml_priv(verbatim) 0
+    set tkhtml_priv(pre) 0
+    set tkhtml_priv(title) {}
+    set tkhtml_priv(in_title) 0
+    set tkhtml_priv(color) black
+    set tkhtml_priv(li_style) bullet
+    set tkhtml_priv(anchor_count) 0
+    set tkhtml_priv(verb_end_token) {}
+    set tkhtml_priv(stack.font) {}
+    set tkhtml_priv(stack.color) {}
+    set tkhtml_priv(stack.justify) {}
+    set tkhtml_priv(stack.li_style) {}
+    set tkhtml_priv(stack.href) {}
+    set tkhtml_priv(points_ndx) 2
+    if {$tkhtml_priv(w) != $w} {
+	set tkhtml_priv(w) $w
+	$tkhtml_priv(w) tag config hr -relief sunken -borderwidth 2 \
+	    -font -*-*-*-*-*-*-$tkhtml_priv(ruler_height)-*-*-*-*-*-*-*
+	foreach elt [array names tkhtml_priv] {
+	    if [regexp "^tag\\..*" $elt] {
+		unset tkhtml_priv($elt)
+	    }
+	}
+    }
+}
+
+proc tkhtml_define_font {name foundry family weight slant registry} {
+    global tkhtml_priv
+    lappend tkhtml_priv(font_names) $name
+    set tkhtml_priv(font_info.$name) \
+	[list $foundry $family $weight $slant $registry]
+}
+
+proc tkhtml_define_entity {name body} {
+    global tkhtml_entity
+    set tkhtml_entity($name) $body
+}
+
+proc tkhtml_do {cmd {argv {}}} {
+    global tkhtml_priv tkhtml_entity
+    eval $tkhtml_entity($cmd)
+}
+
+proc tkhtml_append_text {text} {
+    global tkhtml_priv
+    if !$tkhtml_priv(verbatim) {
+	if !$tkhtml_priv(pre) {
+	    regsub -all "\[ \n\r\t\]+" [string trim $text] " " text
+	}
+	regsub -nocase -all "&amp;" $text {\&} text
+	regsub -nocase -all "&lt;" $text "<" text
+	regsub -nocase -all "&gt;" $text ">" text
+	if ![string length $text] return
+    }
+    if {!$tkhtml_priv(pre) && !$tkhtml_priv(in_title)} {
+	set p [$tkhtml_priv(w) get "end - 2c"]
+	set n [string index $text 0]
+	if {![regexp "\[ \n(\]" $p] && ![regexp "\[\\.,')\]" $n]} {
+	    $tkhtml_priv(w) insert end " "
+	}
+	$tkhtml_priv(w) insert end $text $tkhtml_priv(tag)
+	return
+    }
+    if {$tkhtml_priv(pre) && !$tkhtml_priv(in_title)} {
+	$tkhtml_priv(w) insert end $text $tkhtml_priv(tag)
+	return
+    }
+    append tkhtml_priv(title) $text
+}
+
+proc tkhtml_title {} {
+    global tkhtml_priv
+    return $tkhtml_priv(title)
+}
+
+# a tag is constructed as: font?B?I?U?Points-LeftLeft2RightColorJustify
+proc tkhtml_set_tag {} {
+    global tkhtml_priv
+    set i -1
+    foreach var {foundry family weight slant registry} {
+	set $var [lindex $tkhtml_priv(font_info.$tkhtml_priv(font)) [incr i]]
+    }
+    set x_font "-$foundry-$family-"
+    set tag $tkhtml_priv(font)
+    set args {}
+    if {$tkhtml_priv(weight) > 0} {
+	append tag "B"
+	append x_font [lindex $weight 1]-
+    } else {
+	append x_font [lindex $weight 0]-
+    }
+    if {$tkhtml_priv(slant) > 0} {
+	append tag "I"
+	append x_font [lindex $slant 1]-
+    } else {
+	append x_font [lindex $slant 0]-
+    }
+    if {$tkhtml_priv(underline) > 0} {
+	append tag "U"
+	append args " -underline 1"
+    }
+    switch $tkhtml_priv(justify) {
+	L { append args " -justify left" }
+	R { append args " -justify right" }
+	C { append args " -justify center" }
+    }
+    set pts [lindex $tkhtml_priv($tkhtml_priv(font_size)_points) \
+	     $tkhtml_priv(points_ndx)]
+    append tag $tkhtml_priv(points_ndx) - $tkhtml_priv(left) \
+	$tkhtml_priv(left2) $tkhtml_priv(right) \
+	$tkhtml_priv(color) $tkhtml_priv(justify)
+    append x_font "normal-*-*-$pts-*-*-*-*-$registry-*"
+    if $tkhtml_priv(anchor_count) {
+	set href [tkhtml_peek href]
+	set href_tag href[incr tkhtml_priv(counter)]
+	set tags [list $tag $href_tag]
+	if [info exists tkhtml_priv(command)] {
+	    $tkhtml_priv(w) tag bind $href_tag <1> \
+		[list tkhtml_href_click $tkhtml_priv(command) $href]
+	}
+	$tkhtml_priv(w) tag bind $href_tag <Enter> \
+	    [list $tkhtml_priv(w) tag configure $href_tag -foreground red]
+	$tkhtml_priv(w) tag bind $href_tag <Leave> \
+	    [list $tkhtml_priv(w) tag configure $href_tag \
+	     -foreground $tkhtml_priv(color)]
+    } else {
+	set tags $tag
+    }
+    if {![info exists tkhtml_priv(tag.$tag)]} {
+	set tkhtml_priv(tag_font.$tag) 1
+	eval $tkhtml_priv(w) tag configure $tag \
+	    -font $x_font -foreground $tkhtml_priv(color) \
+	    -lmargin1 $tkhtml_priv(left)m \
+	    -lmargin2 $tkhtml_priv(left2)m $args
+    }
+    if [info exists href_tag] {
+	$tkhtml_priv(w) tag raise $href_tag $tag
+    }
+    set tkhtml_priv(tag) $tags
+}
+
+proc tkhtml_reconfig_tags {w} {
+    global tkhtml_priv
+    foreach tag [$w tag names] {
+	foreach font $tkhtml_priv(font_names) {
+	    if [regexp "${font}(B?)(I?)(U?)(\[1-9\]\[0-9\]*)-" $tag t b i u points] {
+		set j -1
+		if {$font != $tkhtml_priv(fixed_font)} {
+		    set font $tkhtml_priv(font)
+		}
+		foreach var {foundry family weight slant registry} {
+		    set $var [lindex $tkhtml_priv(font_info.$font) [incr j]]
+		}
+		set x_font "-$foundry-$family-"
+		if {$b == "B"} {
+		    append x_font [lindex $weight 1]-
+		} else {
+		    append x_font [lindex $weight 0]-
+		}
+		if {$i == "I"} {
+		    append x_font [lindex $slant 1]-
+		} else {
+		    append x_font [lindex $slant 0]-
+		}
+		set pts [lindex $tkhtml_priv($tkhtml_priv(font_size)_points) \
+			 $points]
+		append x_font "normal-*-*-$pts-*-*-*-*-$registry-*"
+		$w tag config $tag -font $x_font
+		break
+	    }
+	}
+    }
+}
+
+proc tkhtml_push {stack value} {
+    global tkhtml_priv
+    lappend tkhtml_priv(stack.$stack) $value
+}
+
+proc tkhtml_pop {stack} {
+    global tkhtml_priv
+    set n [expr [llength $tkhtml_priv(stack.$stack)]-1]
+    if {$n < 0} {
+	puts "popping empty stack $stack"
+	return ""
+    }
+    set val [lindex $tkhtml_priv(stack.$stack) $n]
+    set tkhtml_priv(stack.$stack) [lreplace $tkhtml_priv(stack.$stack) $n $n]
+    return $val
+}
+
+proc tkhtml_peek {stack} {
+    global tkhtml_priv
+    return [lindex $tkhtml_priv(stack.$stack) end]
+}
+
+proc tkhtml_parse_fields {array_var string} {
+    upvar $array_var array
+    foreach arg $string {
+	if ![regexp "(\[^ \n\r=\]+)=\"?(\[^\"\n\r\t \]*)" $arg dummy field value] {
+	    puts "malformed command field"
+	    puts "field = \"$arg\""
+	    continue
+	}
+	set array([string tolower $field]) $value
+    }
+}
+
+proc tkhtml_set_command {cmd} {
+    global tkhtml_priv
+    set tkhtml_priv(command) $cmd
+}
+
+proc tkhtml_href_click {cmd href} {
+    uplevel #0 $cmd $href
+}
+
+# define the fonts we're going to use
+set tkhtml_priv(font_names) ""
+tkhtml_define_font helvetica adobe helvetica "medium bold" "r o" iso8859
+tkhtml_define_font courier adobe courier "medium bold" "r o" iso8859
+tkhtml_define_font times adobe times "medium bold" "r i" iso8859
+tkhtml_define_font symbol adobe symbol "medium medium" "r r" adobe
+
+# define the entities we're going to handle
+tkhtml_define_entity b { incr tkhtml_priv(weight); tkhtml_set_tag }
+tkhtml_define_entity /b { incr tkhtml_priv(weight) -1; tkhtml_set_tag }
+tkhtml_define_entity strong { incr tkhtml_priv(weight); tkhtml_set_tag }
+tkhtml_define_entity /strong { incr tkhtml_priv(weight) -1; tkhtml_set_tag }
+tkhtml_define_entity tt {
+    tkhtml_push font $tkhtml_priv(font)
+    set tkhtml_priv(font) $tkhtml_priv(fixed_font)
+    tkhtml_set_tag
+}
+tkhtml_define_entity /tt {
+    set tkhtml_priv(font) [tkhtml_pop font]
+    tkhtml_set_tag
+}
+tkhtml_define_entity code { tkhtml_do tt }
+tkhtml_define_entity /code { tkhtml_do /tt }
+tkhtml_define_entity kbd { tkhtml_do tt }
+tkhtml_define_entity /kbd { tkhtml_do /tt }
+tkhtml_define_entity em { incr tkhtml_priv(slant); tkhtml_set_tag }
+tkhtml_define_entity /em { incr tkhtml_priv(slant) -1; tkhtml_set_tag }
+tkhtml_define_entity var { incr tkhtml_priv(slant); tkhtml_set_tag }
+tkhtml_define_entity /var { incr tkhtml_priv(slant) -1; tkhtml_set_tag }
+tkhtml_define_entity cite { incr tkhtml_priv(slant); tkhtml_set_tag }
+tkhtml_define_entity /cite { incr tkhtml_priv(slant) -1; tkhtml_set_tag }
+tkhtml_define_entity address {
+    tkhtml_do br
+    incr tkhtml_priv(slant)
+    tkhtml_set_tag
+}
+tkhtml_define_entity /address {
+    incr tkhtml_priv(slant) -1
+    tkhtml_do br
+    tkhtml_set_tag
+}
+tkhtml_define_entity /cite { incr tkhtml_priv(slant) -1; tkhtml_set_tag }
+
+tkhtml_define_entity p {
+    set x [$tkhtml_priv(w) get end-3c]
+    set y [$tkhtml_priv(w) get end-2c]
+    if {$x == "" && $y == ""} return
+    if {$y == ""} {
+	$tkhtml_priv(w) insert end "\n\n"
+	return
+    }
+    if {$x == "\n" && $y == "\n"} return
+    if {$y == "\n"} {
+	$tkhtml_priv(w) insert end "\n"
+	return
+    }
+    $tkhtml_priv(w) insert end "\n\n"
+}
+tkhtml_define_entity br {
+    if {[$tkhtml_priv(w) get "end-2c"] != "\n"} {
+	$tkhtml_priv(w) insert end "\n"
+    }
+}
+tkhtml_define_entity title { set tkhtml_priv(in_title) 1 }
+tkhtml_define_entity /title { set tkhtml_priv(in_title) 0 }
+
+tkhtml_define_entity h1 { tkhtml_header 1 }
+tkhtml_define_entity /h1 { tkhtml_/header 1 }
+tkhtml_define_entity h2 { tkhtml_header 2 }
+tkhtml_define_entity /h2 { tkhtml_/header 2 }
+tkhtml_define_entity h3 { tkhtml_header 3 }
+tkhtml_define_entity /h3 { tkhtml_/header 3 }
+tkhtml_define_entity h4 { tkhtml_header 4 }
+tkhtml_define_entity /h4 { tkhtml_/header 4 }
+tkhtml_define_entity h5 { tkhtml_header 5 }
+tkhtml_define_entity /h5 { tkhtml_/header 5 }
+tkhtml_define_entity h6 { tkhtml_header 6 }
+tkhtml_define_entity /h6 { tkhtml_/header 6 }
+
+proc tkhtml_header {level} {
+    global tkhtml_priv
+    tkhtml_do p
+    set tkhtml_priv(points_ndx) [expr 6-$level]
+    incr tkhtml_priv(weight)
+    tkhtml_set_tag
+}
+
+proc tkhtml_/header {level} {
+    global tkhtml_priv
+    set tkhtml_priv(points_ndx) 2
+    incr tkhtml_priv(weight) -1
+    tkhtml_set_tag
+    tkhtml_do p
+}
+
+tkhtml_define_entity pre { 
+    tkhtml_do tt
+    tkhtml_do br
+    incr tkhtml_priv(pre)
+}
+tkhtml_define_entity /pre {
+    tkhtml_do /tt
+    set tkhtml_priv(pre) 0
+    tkhtml_do p
+}
+
+tkhtml_define_entity hr {
+    tkhtml_do p
+    $tkhtml_priv(w) insert end "\n" hr
+}
+tkhtml_define_entity a {
+    tkhtml_parse_fields ar $argv
+    tkhtml_push color $tkhtml_priv(color)
+    if [info exists ar(href)] {
+	tkhtml_push href $ar(href)
+    } else {
+	tkhtml_push href {}
+    }
+    incr tkhtml_priv(anchor_count)
+    set tkhtml_priv(color) blue
+    incr tkhtml_priv(underline)
+    tkhtml_set_tag
+}
+tkhtml_define_entity /a {
+    tkhtml_pop href
+    incr tkhtml_priv(anchor_count) -1
+    set tkhtml_priv(color) [tkhtml_pop color]
+    incr tkhtml_priv(underline) -1
+    tkhtml_set_tag
+}
+tkhtml_define_entity center {
+    tkhtml_push justify $tkhtml_priv(justify)
+    set tkhtml_priv(justify) C
+    tkhtml_set_tag
+}
+tkhtml_define_entity /center {
+    set tkhtml_priv(justify) [tkhtml_pop justify]
+    tkhtml_set_tag
+}
+tkhtml_define_entity ul {
+    if $tkhtml_priv(left) {
+	tkhtml_do br
+    } else {
+	tkhtml_do p
+    }
+    incr tkhtml_priv(left) $tkhtml_priv(indent_incr)
+    incr tkhtml_priv(left2) [expr $tkhtml_priv(indent_incr)+3]
+    tkhtml_push li_style $tkhtml_priv(li_style)
+    set tkhtml_priv(li_style) bullet
+    tkhtml_set_tag
+}
+tkhtml_define_entity /ul {
+    incr tkhtml_priv(left) -$tkhtml_priv(indent_incr)
+    incr tkhtml_priv(left2) -[expr $tkhtml_priv(indent_incr)+3]
+    set tkhtml_priv(li_style) [tkhtml_pop li_style]
+    tkhtml_set_tag
+    tkhtml_do p
+}
+tkhtml_define_entity li {
+    tkhtml_do br
+    if {$tkhtml_priv(li_style) == "bullet"} {
+	set old_font $tkhtml_priv(font)
+	set tkhtml_priv(font) symbol
+	tkhtml_set_tag
+	$tkhtml_priv(w) insert end "\xb7" $tkhtml_priv(tag)
+	set tkhtml_priv(font) $old_font
+	tkhtml_set_tag
+    }
+}
+tkhtml_define_entity listing { tkhtml_do pre }
+tkhtml_define_entity /listing { tkhtml_do /pre }
+tkhtml_define_entity code { tkhtml_do pre }
+tkhtml_define_entity /code { tkhtml_do /pre }
+
+tkhtml_define_entity img {
+    tkhtml_parse_fields ar $argv
+    if [info exists ar(src)] {
+	set file $ar(src)
+	if [info exists tkhtml_priv(image_hook)] {
+	    set img [eval $tkhmlt_priv(image_hook) $file]
+	} else {
+	    if [catch {set img [image create photo -file $file]} err] {
+		puts stderr "Couldn't create image $file: $err"
+		return
+	    }
+	}
+	set align bottom
+	if [info exists ar(align)] {
+	    set align [string tolower $ar(align)]
+	}
+	label $tkhtml_priv(w).$img -image $img
+	$tkhtml_priv(w) window create end -window $tkhtml_priv(w).$img \
+	    -align $align
+    }
+}
-- 
2.23.0