1553 lines
43 KiB
Tcl
Executable File
1553 lines
43 KiB
Tcl
Executable File
#!/bin/sh
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# \
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exec wish8.0 "$0" ${1+"$@"}
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# Simple HTML display library by Stephen Uhler (stephen.uhler@sun.com)
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# Copyright (c) 1995 by Sun Microsystems
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# Version 0.3 Fri Sep 1 10:47:17 PDT 1995
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#
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# See the file "license.terms" for information on usage and redistribution
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# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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#
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# To use this package, create a text widget (say, .text)
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# and set a variable full of html, (say $html), and issue:
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# HMinit_win .text
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# HMparse_html $html "HMrender .text"
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# You also need to supply the routine:
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# proc HMlink_callback {win href} { ...}
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# win: The name of the text widget
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# href The name of the link
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# which will be called anytime the user "clicks" on a link.
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# The supplied version just prints the link to stdout.
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# In addition, if you wish to use embedded images, you will need to write
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# proc HMset_image {handle src}
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# handle an arbitrary handle (not really)
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# src The name of the image
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# Which calls
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# HMgot_image $handle $image
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# with the TK image.
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#
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# To return a "used" text widget to its initialized state, call:
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# HMreset_win .text
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# See "sample.tcl" for sample usage
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##################################################################
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############################################
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# mapping of html tags to text tag properties
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# properties beginning with "T" map directly to text tags
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# These are Defined in HTML 2.0
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array set HMtag_map {
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b {weight bold}
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blockquote {style i indent 1 Trindent rindent}
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bq {style i indent 1 Trindent rindent}
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cite {style i}
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code {family courier}
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dfn {style i}
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dir {indent 1}
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dl {indent 1}
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em {style i}
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h1 {size 20 weight bold}
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h2 {size 18}
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h3 {size 14}
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h4 {size 12}
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h5 {size 12}
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h6 {style i}
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i {style i}
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kbd {family courier weight bold}
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menu {indent 1}
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ol {indent 1}
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pre {fill 0 family courier Tnowrap nowrap}
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samp {family courier}
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strong {weight bold}
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tt {family courier}
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u {Tunderline underline}
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ul {indent 1}
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var {style i}
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}
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# These are in common(?) use, but not defined in html2.0
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array set HMtag_map {
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center {Tcenter center}
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strike {Tstrike strike}
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u {Tunderline underline}
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}
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# initial values
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set HMtag_map(hmstart) {
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family helvetica weight medium style r size 10
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Tcenter "" Tlink "" Tnowrap "" Tunderline "" list list
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fill 1 indent "" counter 0 adjust 0
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}
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# html tags that insert white space
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array set HMinsert_map {
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blockquote "\n\n" /blockquote "\n"
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br "\n"
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dd "\n" /dd "\n"
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dl "\n" /dl "\n"
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dt "\n"
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form "\n" /form "\n"
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h1 "\n\n" /h1 "\n"
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h2 "\n\n" /h2 "\n"
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h3 "\n\n" /h3 "\n"
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h4 "\n" /h4 "\n"
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h5 "\n" /h5 "\n"
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h6 "\n" /h6 "\n"
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li "\n"
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/dir "\n"
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/ul "\n"
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/ol "\n"
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/menu "\n"
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p "\n\n"
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pre "\n" /pre "\n"
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}
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# tags that are list elements, that support "compact" rendering
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array set HMlist_elements {
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ol 1 ul 1 menu 1 dl 1 dir 1
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}
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############################################
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# initialize the window and stack state
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proc HMinit_win {win} {
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upvar #0 HM$win var
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HMinit_state $win
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$win tag configure underline -underline 1
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$win tag configure center -justify center
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$win tag configure nowrap -wrap none
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$win tag configure rindent -rmargin $var(S_tab)c
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$win tag configure strike -overstrike 1
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$win tag configure mark -foreground red ;# list markers
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$win tag configure list -spacing1 3p -spacing3 3p ;# regular lists
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$win tag configure compact -spacing1 0p ;# compact lists
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$win tag configure link -borderwidth 2 -foreground blue ;# hypertext links
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HMset_indent $win $var(S_tab)
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$win configure -wrap word
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# configure the text insertion point
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$win mark set $var(S_insert) 1.0
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# for horizontal rules
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$win tag configure thin -font [HMx_font times 2 medium r]
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$win tag configure hr -relief sunken -borderwidth 2 -wrap none \
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-tabs [winfo width $win]
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bind $win <Configure> {
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%W tag configure hr -tabs %w
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%W tag configure last -spacing3 %h
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}
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# generic link enter callback
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$win tag bind link <1> "HMlink_hit $win %x %y"
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}
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# set the indent spacing (in cm) for lists
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# TK uses a "weird" tabbing model that causes \t to insert a single
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# space if the current line position is past the tab setting
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proc HMset_indent {win cm} {
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set tabs [expr $cm / 2.0]
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$win configure -tabs ${tabs}c
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foreach i {1 2 3 4 5 6 7 8 9} {
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set tab [expr $i * $cm]
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$win tag configure indent$i -lmargin1 ${tab}c -lmargin2 ${tab}c \
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-tabs "[expr $tab + $tabs]c [expr $tab + 2*$tabs]c"
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}
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}
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# reset the state of window - get ready for the next page
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# remove all but the font tags, and remove all form state
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proc HMreset_win {win} {
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upvar #0 HM$win var
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regsub -all { +[^L ][^ ]*} " [$win tag names] " {} tags
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catch "$win tag delete $tags"
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eval $win mark unset [$win mark names]
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$win delete 0.0 end
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$win tag configure hr -tabs [winfo width $win]
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# configure the text insertion point
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$win mark set $var(S_insert) 1.0
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# remove form state. If any check/radio buttons still exists,
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# their variables will be magically re-created, and never get
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# cleaned up.
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catch unset [info globals HM$win.form*]
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HMinit_state $win
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return HM$win
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}
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# initialize the window's state array
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# Parameters beginning with S_ are NOT reset
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# adjust_size: global font size adjuster
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# unknown: character to use for unknown entities
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# tab: tab stop (in cm)
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# stop: enabled to stop processing
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# update: how many tags between update calls
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# tags: number of tags processed so far
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# symbols: Symbols to use on un-ordered lists
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proc HMinit_state {win} {
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upvar #0 HM$win var
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array set tmp [array get var S_*]
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catch {unset var}
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array set var {
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stop 0
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tags 0
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fill 0
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list list
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S_adjust_size 0
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S_tab 1.0
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S_unknown \xb7
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S_update 10
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S_symbols O*=+-o\xd7\xb0>:\xb7
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S_insert Insert
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}
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array set var [array get tmp]
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}
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# alter the parameters of the text state
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# this allows an application to over-ride the default settings
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# it is called as: HMset_state -param value -param value ...
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array set HMparam_map {
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-update S_update
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-tab S_tab
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-unknown S_unknown
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-stop S_stop
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-size S_adjust_size
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-symbols S_symbols
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-insert S_insert
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}
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proc HMset_state {win args} {
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upvar #0 HM$win var
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global HMparam_map
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set bad 0
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if {[catch {array set params $args}]} {return 0}
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foreach i [array names params] {
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incr bad [catch {set var($HMparam_map($i)) $params($i)}]
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}
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return [expr $bad == 0]
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}
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############################################
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# manage the display of html
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# HMrender gets called for every html tag
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# win: The name of the text widget to render into
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# tag: The html tag (in arbitrary case)
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# not: a "/" or the empty string
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# param: The un-interpreted parameter list
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# text: The plain text until the next html tag
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proc HMrender {win tag not param text} {
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upvar #0 HM$win var
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if {$var(stop)} return
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global HMtag_map HMinsert_map HMlist_elements
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set tag [string tolower $tag]
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set text [HMmap_esc $text]
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# manage compact rendering of lists
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if {[info exists HMlist_elements($tag)]} {
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set list "list [expr {[HMextract_param $param compact] ? "compact" : "list"}]"
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} else {
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set list ""
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}
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# Allow text to be diverted to a different window (for tables)
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# this is not currently used
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if {[info exists var(divert)]} {
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set win $var(divert)
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upvar #0 HM$win var
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}
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# adjust (push or pop) tag state
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catch {HMstack $win $not "$HMtag_map($tag) $list"}
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# insert white space (with current font)
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# adding white space can get a bit tricky. This isn't quite right
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set bad [catch {$win insert $var(S_insert) $HMinsert_map($not$tag) "space $var(font)"}]
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if {!$bad && [lindex $var(fill) end]} {
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set text [string trimleft $text]
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}
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# to fill or not to fill
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if {[lindex $var(fill) end]} {
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set text [HMzap_white $text]
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}
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# generic mark hook
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catch {HMmark $not$tag $win $param text} err
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# do any special tag processing
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catch {HMtag_$not$tag $win $param text} msg
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# add the text with proper tags
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set tags [HMcurrent_tags $win]
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$win insert $var(S_insert) $text $tags
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# We need to do an update every so often to insure interactive response.
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# This can cause us to re-enter the event loop, and cause recursive
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# invocations of HMrender, so we need to be careful.
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if {!([incr var(tags)] % $var(S_update))} {
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update
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}
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}
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# html tags requiring special processing
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# Procs of the form HMtag_<tag> or HMtag_</tag> get called just before
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# the text for this tag is displayed. These procs are called inside a
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# "catch" so it is OK to fail.
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# win: The name of the text widget to render into
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# param: The un-interpreted parameter list
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# text: A pass-by-reference name of the plain text until the next html tag
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# Tag commands may change this to affect what text will be inserted
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# next.
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# A pair of pseudo tags are added automatically as the 1st and last html
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# tags in the document. The default is <HMstart> and </HMstart>.
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# Append enough blank space at the end of the text widget while
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# rendering so HMgoto can place the target near the top of the page,
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# then remove the extra space when done rendering.
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proc HMtag_hmstart {win param text} {
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upvar #0 HM$win var
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$win mark gravity $var(S_insert) left
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$win insert end "\n " last
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$win mark gravity $var(S_insert) right
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}
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proc HMtag_/hmstart {win param text} {
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$win delete last.first end
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}
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# put the document title in the window banner, and remove the title text
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# from the document
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proc HMtag_title {win param text} {
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upvar $text data
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wm title [winfo toplevel $win] "tkgoodstuff help: $data"
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set data ""
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}
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proc HMtag_hr {win param text} {
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upvar #0 HM$win var
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$win insert $var(S_insert) "\n" space "\n" thin "\t" "thin hr" "\n" thin
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}
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# list element tags
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proc HMtag_ol {win param text} {
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upvar #0 HM$win var
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set var(count$var(level)) 0
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}
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proc HMtag_ul {win param text} {
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upvar #0 HM$win var
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catch {unset var(count$var(level))}
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}
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proc HMtag_menu {win param text} {
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upvar #0 HM$win var
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set var(menu) ->
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set var(compact) 1
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}
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proc HMtag_/menu {win param text} {
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upvar #0 HM$win var
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catch {unset var(menu)}
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catch {unset var(compact)}
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}
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proc HMtag_dt {win param text} {
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upvar #0 HM$win var
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upvar $text data
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set level $var(level)
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incr level -1
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$win insert $var(S_insert) "$data" \
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"hi [lindex $var(list) end] indent$level $var(font)"
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set data {}
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}
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proc HMtag_li {win param text} {
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upvar #0 HM$win var
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set level $var(level)
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incr level -1
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set x [string index $var(S_symbols)+-+-+-+- $level]
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catch {set x [incr var(count$level)]}
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catch {set x $var(menu)}
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$win insert $var(S_insert) \t$x\t "mark [lindex $var(list) end] indent$level $var(font)"
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}
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# Manage hypertext "anchor" links. A link can be either a source (href)
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# a destination (name) or both. If its a source, register it via a callback,
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# and set its default behavior. If its a destination, check to see if we need
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# to go there now, as a result of a previous HMgoto request. If so, schedule
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# it to happen with the closing </a> tag, so we can highlight the text up to
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# the </a>.
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proc HMtag_a {win param text} {
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upvar #0 HM$win var
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# a source
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if {[HMextract_param $param href]} {
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set var(Tref) [list L:$href]
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HMstack $win "" "Tlink link"
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HMlink_setup $win $href
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}
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# a destination
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if {[HMextract_param $param name]} {
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set var(Tname) [list N:$name]
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HMstack $win "" "Tanchor anchor"
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$win mark set N:$name "$var(S_insert) - 1 chars"
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$win mark gravity N:$name left
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if {[info exists var(goto)] && $var(goto) == $name} {
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unset var(goto)
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set var(going) $name
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}
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}
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}
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# The application should call here with the fragment name
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# to cause the display to go to this spot.
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# If the target exists, go there (and do the callback),
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# otherwise schedule the goto to happen when we see the reference.
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proc HMgoto {win where {callback HMwent_to}} {
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upvar #0 HM$win var
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if {[regexp N:$where [$win mark names]]} {
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$win see N:$where
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update
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eval $callback $win [list $where]
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return 1
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} else {
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set var(goto) $where
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return 0
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}
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}
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# We actually got to the spot, so highlight it!
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# This should/could be replaced by the application
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# We'll flash it orange a couple of times.
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proc HMwent_to {win where {count 0} {color orange}} {
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upvar #0 HM$win var
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if {$count > 5} return
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catch {$win tag configure N:$where -foreground $color}
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update
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after 200 [list HMwent_to $win $where [incr count] \
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[expr {$color=="orange" ? "" : "orange"}]]
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}
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proc HMtag_/a {win param text} {
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upvar #0 HM$win var
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if {[info exists var(Tref)]} {
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unset var(Tref)
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HMstack $win / "Tlink link"
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}
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# goto this link, then invoke the call-back.
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if {[info exists var(going)]} {
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$win yview N:$var(going)
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update
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HMwent_to $win $var(going)
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unset var(going)
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}
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if {[info exists var(Tname)]} {
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unset var(Tname)
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HMstack $win / "Tanchor anchor"
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}
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}
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# Inline Images
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# This interface is subject to change
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# Most of the work is getting around a limitation of TK that prevents
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# setting the size of a label to a widthxheight in pixels
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#
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# Images have the following parameters:
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# align: top,middle,bottom
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# alt: alternate text
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# ismap: A clickable image map
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# src: The URL link
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# Netscape supports (and so do we)
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# width: A width hint (in pixels)
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# height: A height hint (in pixels)
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# border: The size of the window border
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proc HMtag_img {win param text} {
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upvar #0 HM$win var
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# get alignment
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array set align_map {top top middle center bottom bottom}
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set align bottom ;# The spec isn't clear what the default should be
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HMextract_param $param align
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catch {set align $align_map([string tolower $align])}
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# get alternate text
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set alt "<image>"
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HMextract_param $param alt
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set alt [HMmap_esc $alt]
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# get the border width
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set border 1
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HMextract_param $param border
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# see if we have an image size hint
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# If so, make a frame the "hint" size to put the label in
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# otherwise just make the label
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set item $win.$var(tags)
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# catch {destroy $item}
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if {[HMextract_param $param width] && [HMextract_param $param height]} {
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frame $item -width $width -height $height
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pack propagate $item 0
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set label $item.label
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label $label
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pack $label -expand 1 -fill both
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} else {
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set label $item
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label $label
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}
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$label configure -relief ridge -fg orange -text $alt
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catch {$label configure -bd $border}
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$win window create $var(S_insert) -align $align -window $item -pady 2 -padx 2
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# add in all the current tags (this is overkill)
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set tags [HMcurrent_tags $win]
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foreach tag $tags {
|
|
$win tag add $tag $item
|
|
}
|
|
|
|
# set imagemap callbacks
|
|
if {[HMextract_param $param ismap]} {
|
|
# regsub -all {[^L]*L:([^ ]*).*} $tags {\1} link
|
|
set link [lindex $tags [lsearch -glob $tags L:*]]
|
|
regsub L: $link {} link
|
|
global HMevents
|
|
regsub -all {%} $link {%%} link2
|
|
foreach i [array names HMevents] {
|
|
bind $label <$i> "catch \{%W configure $HMevents($i)\}"
|
|
}
|
|
bind $label <1> "+HMlink_callback $win $link2?%x,%y"
|
|
}
|
|
|
|
# now callback to the application
|
|
set src ""
|
|
HMextract_param $param src
|
|
HMset_image $win $label $src
|
|
return $label ;# used by the forms package for input_image types
|
|
}
|
|
|
|
# The app needs to supply one of these
|
|
proc HMset_image {win handle src} {
|
|
HMgot_image $handle "can't get\n$src"
|
|
}
|
|
|
|
# When the image is available, the application should call back here.
|
|
# If we have the image, put it in the label, otherwise display the error
|
|
# message. If we don't get a callback, the "alt" text remains.
|
|
# if we have a clickable image, arrange for a callback
|
|
|
|
proc HMgot_image {win image_error} {
|
|
# if we're in a frame turn on geometry propogation
|
|
if {[winfo name $win] == "label"} {
|
|
pack propagate [winfo parent $win] 1
|
|
}
|
|
if {[catch {$win configure -image $image_error}]} {
|
|
$win configure -image {}
|
|
$win configure -text $image_error
|
|
}
|
|
}
|
|
|
|
# Sample hypertext link callback routine - should be replaced by app
|
|
# This proc is called once for each <A> tag.
|
|
# Applications can overwrite this procedure, as required, or
|
|
# replace the HMevents array
|
|
# win: The name of the text widget to render into
|
|
# href: The HREF link for this <a> tag.
|
|
|
|
array set HMevents {
|
|
Enter {-borderwidth 2 -relief raised }
|
|
Leave {-borderwidth 2 -relief flat }
|
|
1 {-borderwidth 2 -relief sunken}
|
|
ButtonRelease-1 {-borderwidth 2 -relief raised}
|
|
}
|
|
|
|
# We need to escape any %'s in the href tag name so the bind command
|
|
# doesn't try to substitute them.
|
|
|
|
proc HMlink_setup {win href} {
|
|
global HMevents
|
|
regsub -all {%} $href {%%} href2
|
|
foreach i [array names HMevents] {
|
|
eval {$win tag bind L:$href <$i>} \
|
|
\{$win tag configure \{L:$href2\} $HMevents($i)\}
|
|
}
|
|
}
|
|
|
|
# generic link-hit callback
|
|
# This gets called upon button hits on hypertext links
|
|
# Applications are expected to supply ther own HMlink_callback routine
|
|
# win: The name of the text widget to render into
|
|
# x,y: The cursor position at the "click"
|
|
|
|
proc HMlink_hit {win x y} {
|
|
set tags [$win tag names @$x,$y]
|
|
set link [lindex $tags [lsearch -glob $tags L:*]]
|
|
# regsub -all {[^L]*L:([^ ]*).*} $tags {\1} link
|
|
regsub L: $link {} link
|
|
HMlink_callback $win $link
|
|
}
|
|
|
|
# replace this!
|
|
# win: The name of the text widget to render into
|
|
# href: The HREF link for this <a> tag.
|
|
|
|
proc HMlink_callback {win href} {
|
|
puts "Got hit on $win, link $href"
|
|
}
|
|
|
|
# extract a value from parameter list (this needs a re-do)
|
|
# returns "1" if the keyword is found, "0" otherwise
|
|
# param: A parameter list. It should alredy have been processed to
|
|
# remove any entity references
|
|
# key: The parameter name
|
|
# val: The variable to put the value into (use key as default)
|
|
|
|
proc HMextract_param {param key {val ""}} {
|
|
|
|
if {$val == ""} {
|
|
upvar $key result
|
|
} else {
|
|
upvar $val result
|
|
}
|
|
set ws " \n\r"
|
|
|
|
# look for name=value combinations. Either (') or (") are valid delimeters
|
|
if {
|
|
[regsub -nocase [format {.*%s[%s]*=[%s]*"([^"]*).*} $key $ws $ws] $param {\1} value] ||
|
|
[regsub -nocase [format {.*%s[%s]*=[%s]*'([^']*).*} $key $ws $ws] $param {\1} value] ||
|
|
[regsub -nocase [format {.*%s[%s]*=[%s]*([^%s]+).*} $key $ws $ws $ws] $param {\1} value] } {
|
|
set result $value
|
|
return 1
|
|
}
|
|
|
|
# now look for valueless names
|
|
# I should strip out name=value pairs, so we don't end up with "name"
|
|
# inside the "value" part of some other key word - some day
|
|
|
|
set bad \[^a-zA-Z\]+
|
|
if {[regexp -nocase "$bad$key$bad" -$param-]} {
|
|
return 1
|
|
} else {
|
|
return 0
|
|
}
|
|
}
|
|
|
|
# These next two routines manage the display state of the page.
|
|
|
|
# Push or pop tags to/from stack.
|
|
# Each orthogonal text property has its own stack, stored as a list.
|
|
# The current (most recent) tag is the last item on the list.
|
|
# Push is {} for pushing and {/} for popping
|
|
|
|
proc HMstack {win push list} {
|
|
upvar #0 HM$win var
|
|
array set tags $list
|
|
if {$push == ""} {
|
|
foreach tag [array names tags] {
|
|
lappend var($tag) $tags($tag)
|
|
}
|
|
} else {
|
|
foreach tag [array names tags] {
|
|
# set cnt [regsub { *[^ ]+$} $var($tag) {} var($tag)]
|
|
set var($tag) [lreplace $var($tag) end end]
|
|
}
|
|
}
|
|
}
|
|
|
|
# extract set of current text tags
|
|
# tags starting with T map directly to text tags, all others are
|
|
# handled specially. There is an application callback, HMset_font
|
|
# to allow the application to do font error handling
|
|
|
|
proc HMcurrent_tags {win} {
|
|
upvar #0 HM$win var
|
|
set font font
|
|
foreach i {family size weight style} {
|
|
set $i [lindex $var($i) end]
|
|
append font :[set $i]
|
|
}
|
|
set xfont [HMx_font $family $size $weight $style $var(S_adjust_size)]
|
|
HMset_font $win $font $xfont
|
|
set indent [llength $var(indent)]
|
|
incr indent -1
|
|
lappend tags $font indent$indent
|
|
foreach tag [array names var T*] {
|
|
lappend tags [lindex $var($tag) end] ;# test
|
|
}
|
|
set var(font) $font
|
|
set var(xfont) [$win tag cget $font -font]
|
|
set var(level) $indent
|
|
return $tags
|
|
}
|
|
|
|
# allow the application to do do better font management
|
|
# by overriding this procedure
|
|
|
|
proc HMset_font {win tag font} {
|
|
catch {$win tag configure $tag -font $font} msg
|
|
}
|
|
|
|
# generate an X font name
|
|
proc HMx_font {family size weight style {adjust_size 0}} {
|
|
catch {incr size $adjust_size}
|
|
return "-*-$family-$weight-$style-normal-*-*-${size}0-*-*-*-*-*-*"
|
|
}
|
|
|
|
# Optimize HMrender (hee hee)
|
|
# This is experimental
|
|
|
|
proc HMoptimize {} {
|
|
regsub -all "\n\[ \]*#\[^\n\]*" [info body HMrender] {} body
|
|
regsub -all ";\[ \]*#\[^\n]*" $body {} body
|
|
regsub -all "\n\n+" $body \n body
|
|
proc HMrender {win tag not param text} $body
|
|
}
|
|
############################################
|
|
# Turn HTML into TCL commands
|
|
# html A string containing an html document
|
|
# cmd A command to run for each html tag found
|
|
# start The name of the dummy html start/stop tags
|
|
|
|
proc HMparse_html {html {cmd HMtest_parse} {start hmstart}} {
|
|
regsub -all \{ $html {\&ob;} html
|
|
regsub -all \} $html {\&cb;} html
|
|
set w " \t\r\n" ;# white space
|
|
proc HMcl x {return "\[$x\]"}
|
|
set exp <(/?)([HMcl ^$w>]+)[HMcl $w]*([HMcl ^>]*)>
|
|
set sub "\}\n$cmd {\\2} {\\1} {\\3} \{"
|
|
regsub -all $exp $html $sub html
|
|
eval "$cmd {$start} {} {} \{ $html \}"
|
|
eval "$cmd {$start} / {} {}"
|
|
}
|
|
|
|
proc HMtest_parse {command tag slash text_after_tag} {
|
|
puts "==> $command $tag $slash $text_after_tag"
|
|
}
|
|
|
|
# Convert multiple white space into a single space
|
|
|
|
proc HMzap_white {data} {
|
|
regsub -all "\[ \t\r\n\]+" $data " " data
|
|
return $data
|
|
}
|
|
|
|
# find HTML escape characters of the form &xxx;
|
|
|
|
proc HMmap_esc {text} {
|
|
if {![regexp & $text]} {return $text}
|
|
regsub -all {([][$\\])} $text {\\\1} new
|
|
regsub -all {&#([0-9][0-9]?[0-9]?);?} \
|
|
$new {[format %c [scan \1 %d tmp;set tmp]]} new
|
|
regsub -all {&([a-zA-Z]+);?} $new {[HMdo_map \1]} new
|
|
return [subst $new]
|
|
}
|
|
|
|
# convert an HTML escape sequence into character
|
|
|
|
proc HMdo_map {text {unknown ?}} {
|
|
global HMesc_map
|
|
set result $unknown
|
|
catch {set result $HMesc_map($text)}
|
|
return $result
|
|
}
|
|
|
|
# table of escape characters (ISO latin-1 esc's are in a different table)
|
|
|
|
array set HMesc_map {
|
|
lt < gt > amp & quot \" copy \xa9
|
|
reg \xae ob \x7b cb \x7d nbsp \xa0
|
|
}
|
|
#############################################################
|
|
# ISO Latin-1 escape codes
|
|
|
|
array set HMesc_map {
|
|
nbsp \xa0 iexcl \xa1 cent \xa2 pound \xa3 curren \xa4
|
|
yen \xa5 brvbar \xa6 sect \xa7 uml \xa8 copy \xa9
|
|
ordf \xaa laquo \xab not \xac shy \xad reg \xae
|
|
hibar \xaf deg \xb0 plusmn \xb1 sup2 \xb2 sup3 \xb3
|
|
acute \xb4 micro \xb5 para \xb6 middot \xb7 cedil \xb8
|
|
sup1 \xb9 ordm \xba raquo \xbb frac14 \xbc frac12 \xbd
|
|
frac34 \xbe iquest \xbf Agrave \xc0 Aacute \xc1 Acirc \xc2
|
|
Atilde \xc3 Auml \xc4 Aring \xc5 AElig \xc6 Ccedil \xc7
|
|
Egrave \xc8 Eacute \xc9 Ecirc \xca Euml \xcb Igrave \xcc
|
|
Iacute \xcd Icirc \xce Iuml \xcf ETH \xd0 Ntilde \xd1
|
|
Ograve \xd2 Oacute \xd3 Ocirc \xd4 Otilde \xd5 Ouml \xd6
|
|
times \xd7 Oslash \xd8 Ugrave \xd9 Uacute \xda Ucirc \xdb
|
|
Uuml \xdc Yacute \xdd THORN \xde szlig \xdf agrave \xe0
|
|
aacute \xe1 acirc \xe2 atilde \xe3 auml \xe4 aring \xe5
|
|
aelig \xe6 ccedil \xe7 egrave \xe8 eacute \xe9 ecirc \xea
|
|
euml \xeb igrave \xec iacute \xed icirc \xee iuml \xef
|
|
eth \xf0 ntilde \xf1 ograve \xf2 oacute \xf3 ocirc \xf4
|
|
otilde \xf5 ouml \xf6 divide \xf7 oslash \xf8 ugrave \xf9
|
|
uacute \xfa ucirc \xfb uuml \xfc yacute \xfd thorn \xfe
|
|
yuml \xff
|
|
}
|
|
|
|
##########################################################
|
|
# html forms management commands
|
|
|
|
# As each form element is located, it is created and rendered. Additional
|
|
# state is stored in a form specific global variable to be processed at
|
|
# the end of the form, including the "reset" and "submit" options.
|
|
# Remember, there can be multiple forms existing on multiple pages. When
|
|
# HTML tables are added, a single form could be spread out over multiple
|
|
# text widgets, which makes it impractical to hang the form state off the
|
|
# HM$win structure. We don't need to check for the existance of required
|
|
# parameters, we just "fail" and get caught in HMrender
|
|
|
|
# This causes line breaks to be preserved in the inital values
|
|
# of text areas
|
|
array set HMtag_map {
|
|
textarea {fill 0}
|
|
}
|
|
|
|
##########################################################
|
|
# html isindex tag. Although not strictly forms, they're close enough
|
|
# to be in this file
|
|
|
|
# is-index forms
|
|
# make a frame with a label, entry, and submit button
|
|
|
|
proc HMtag_isindex {win param text} {
|
|
upvar #0 HM$win var
|
|
|
|
set item $win.$var(tags)
|
|
if {[winfo exists $item]} {
|
|
destroy $item
|
|
}
|
|
frame $item -relief ridge -bd 3
|
|
set prompt "Enter search keywords here"
|
|
HMextract_param $param prompt
|
|
label $item.label -text [HMmap_esc $prompt] -font $var(xfont)
|
|
entry $item.entry
|
|
bind $item.entry <Return> "$item.submit invoke"
|
|
button $item.submit -text search -font $var(xfont) -command \
|
|
[format {HMsubmit_index %s {%s} [HMmap_reply [%s get]]} \
|
|
$win $param $item.entry]
|
|
pack $item.label -side top
|
|
pack $item.entry $item.submit -side left
|
|
|
|
# insert window into text widget
|
|
|
|
$win insert $var(S_insert) \n isindex
|
|
HMwin_install $win $item
|
|
$win insert $var(S_insert) \n isindex
|
|
bind $item <Visibility> {focus %W.entry}
|
|
}
|
|
|
|
# This is called when the isindex form is submitted.
|
|
# The default version calls HMlink_callback. Isindex tags should either
|
|
# be deprecated, or fully supported (e.g. they need an href parameter)
|
|
|
|
proc HMsubmit_index {win param text} {
|
|
HMlink_callback $win ?$text
|
|
}
|
|
|
|
# initialize form state. All of the state for this form is kept
|
|
# in a global array whose name is stored in the form_id field of
|
|
# the main window array.
|
|
# Parameters: ACTION, METHOD, ENCTYPE
|
|
|
|
proc HMtag_form {win param text} {
|
|
upvar #0 HM$win var
|
|
|
|
# create a global array for the form
|
|
set id HM$win.form$var(tags)
|
|
upvar #0 $id form
|
|
|
|
# missing /form tag, simulate it
|
|
if {[info exists var(form_id)]} {
|
|
puts "Missing end-form tag !!!! $var(form_id)"
|
|
HMtag_/form $win {} {}
|
|
}
|
|
catch {unset form}
|
|
set var(form_id) $id
|
|
|
|
set form(param) $param ;# form initial parameter list
|
|
set form(reset) "" ;# command to reset the form
|
|
set form(reset_button) "" ;# list of all reset buttons
|
|
set form(submit) "" ;# command to submit the form
|
|
set form(submit_button) "" ;# list of all submit buttons
|
|
}
|
|
|
|
# Where we're done try to get all of the state into the widgets so
|
|
# we can free up the form structure here. Unfortunately, we can't!
|
|
|
|
proc HMtag_/form {win param text} {
|
|
upvar #0 HM$win var
|
|
upvar #0 $var(form_id) form
|
|
|
|
# make submit button entries for all radio buttons
|
|
foreach name [array names form radio_*] {
|
|
regsub radio_ $name {} name
|
|
lappend form(submit) [list $name \$form(radio_$name)]
|
|
}
|
|
|
|
# process the reset button(s)
|
|
|
|
foreach item $form(reset_button) {
|
|
$item configure -command $form(reset)
|
|
}
|
|
|
|
# no submit button - add one
|
|
if {$form(submit_button) == ""} {
|
|
HMinput_submit $win {}
|
|
}
|
|
|
|
# process the "submit" command(s)
|
|
# each submit button could have its own name,value pair
|
|
|
|
foreach item $form(submit_button) {
|
|
set submit $form(submit)
|
|
catch {lappend submit $form(submit_$item)}
|
|
$item configure -command \
|
|
[list HMsubmit_button $win $var(form_id) $form(param) \
|
|
$submit]
|
|
}
|
|
|
|
# unset all unused fields here
|
|
unset form(reset) form(submit) form(reset_button) form(submit_button)
|
|
unset var(form_id)
|
|
}
|
|
|
|
###################################################################
|
|
# handle form input items
|
|
# each item type is handled in a separate procedure
|
|
# Each "type" procedure needs to:
|
|
# - create the window
|
|
# - initialize it
|
|
# - add the "submit" and "reset" commands onto the proper Q's
|
|
# "submit" is subst'd
|
|
# "reset" is eval'd
|
|
|
|
proc HMtag_input {win param text} {
|
|
upvar #0 HM$win var
|
|
|
|
set type text ;# the default
|
|
HMextract_param $param type
|
|
set type [string tolower $type]
|
|
if {[catch {HMinput_$type $win $param} err]} {
|
|
puts stderr $err
|
|
}
|
|
}
|
|
|
|
# input type=text
|
|
# parameters NAME (reqd), MAXLENGTH, SIZE, VALUE
|
|
|
|
proc HMinput_text {win param {show {}}} {
|
|
upvar #0 HM$win var
|
|
upvar #0 $var(form_id) form
|
|
|
|
# make the entry
|
|
HMextract_param $param name ;# required
|
|
set item $win.input_text,$var(tags)
|
|
set size 20; HMextract_param $param size
|
|
set maxlength 0; HMextract_param $param maxlength
|
|
entry $item -width $size -show $show
|
|
|
|
# set the initial value
|
|
set value ""; HMextract_param $param value
|
|
$item insert 0 $value
|
|
|
|
# insert the entry
|
|
HMwin_install $win $item
|
|
|
|
# set the "reset" and "submit" commands
|
|
append form(reset) ";$item delete 0 end;$item insert 0 [list $value]"
|
|
lappend form(submit) [list $name "\[$item get]"]
|
|
|
|
# handle the maximum length (broken - no way to cleanup bindtags state)
|
|
if {$maxlength} {
|
|
bindtags $item "[bindtags $item] max$maxlength"
|
|
bind max$maxlength <KeyPress> "%W delete $maxlength end"
|
|
}
|
|
}
|
|
|
|
# password fields - same as text, only don't show data
|
|
# parameters NAME (reqd), MAXLENGTH, SIZE, VALUE
|
|
|
|
proc HMinput_password {win param} {
|
|
HMinput_text $win $param *
|
|
}
|
|
|
|
# checkbuttons are missing a "get" option, so we must use a global
|
|
# variable to store the value.
|
|
# Parameters NAME, VALUE, (reqd), CHECKED
|
|
|
|
proc HMinput_checkbox {win param} {
|
|
upvar #0 HM$win var
|
|
upvar #0 $var(form_id) form
|
|
|
|
HMextract_param $param name
|
|
HMextract_param $param value
|
|
|
|
# Set the global variable, don't use the "form" alias as it is not
|
|
# defined in the global scope of the button
|
|
set variable $var(form_id)(check_$var(tags))
|
|
set item $win.input_checkbutton,$var(tags)
|
|
checkbutton $item -variable $variable -off {} -on $value -text " "
|
|
if {[HMextract_param $param checked]} {
|
|
$item select
|
|
append form(reset) ";$item select"
|
|
} else {
|
|
append form(reset) ";$item deselect"
|
|
}
|
|
|
|
HMwin_install $win $item
|
|
lappend form(submit) [list $name \$form(check_$var(tags))]
|
|
}
|
|
|
|
# radio buttons. These are like check buttons, but only one can be selected
|
|
|
|
proc HMinput_radio {win param} {
|
|
upvar #0 HM$win var
|
|
upvar #0 $var(form_id) form
|
|
|
|
HMextract_param $param name
|
|
HMextract_param $param value
|
|
|
|
set first [expr ![info exists form(radio_$name)]]
|
|
set variable $var(form_id)(radio_$name)
|
|
set variable $var(form_id)(radio_$name)
|
|
set item $win.input_radiobutton,$var(tags)
|
|
radiobutton $item -variable $variable -value $value -text " "
|
|
|
|
HMwin_install $win $item
|
|
|
|
if {$first || [HMextract_param $param checked]} {
|
|
$item select
|
|
append form(reset) ";$item select"
|
|
} else {
|
|
append form(reset) ";$item deselect"
|
|
}
|
|
|
|
# do the "submit" actions in /form so we only end up with 1 per button grouping
|
|
# contributing to the submission
|
|
}
|
|
|
|
# hidden fields, just append to the "submit" data
|
|
# params: NAME, VALUE (reqd)
|
|
|
|
proc HMinput_hidden {win param} {
|
|
upvar #0 HM$win var
|
|
upvar #0 $var(form_id) form
|
|
HMextract_param $param name
|
|
HMextract_param $param value
|
|
lappend form(submit) [list $name $value]
|
|
}
|
|
|
|
# handle input images. The spec isn't very clear on these, so I'm not
|
|
# sure its quite right
|
|
# Use std image tag, only set up our own callbacks
|
|
# (e.g. make sure ismap isn't set)
|
|
# params: NAME, SRC (reqd) ALIGN
|
|
|
|
proc HMinput_image {win param} {
|
|
upvar #0 HM$win var
|
|
upvar #0 $var(form_id) form
|
|
HMextract_param $param name
|
|
set name ;# barf if no name is specified
|
|
set item [HMtag_img $win $param {}]
|
|
$item configure -relief raised -bd 2 -bg blue
|
|
|
|
# make a dummy "submit" button, and invoke it to send the form.
|
|
# We have to get the %x,%y in the value somehow, so calculate it during
|
|
# binding, and save it in the form array for later processing
|
|
|
|
set submit $win.dummy_submit,$var(tags)
|
|
if {[winfo exists $submit]} {
|
|
destroy $submit
|
|
}
|
|
button $submit -takefocus 0;# this never gets mapped!
|
|
lappend form(submit_button) $submit
|
|
set form(submit_$submit) [list $name $name.\$form(X).\$form(Y)]
|
|
|
|
$item configure -takefocus 1
|
|
bind $item <FocusIn> "catch \{$win see $item\}"
|
|
bind $item <1> "$item configure -relief sunken"
|
|
bind $item <Return> "
|
|
set $var(form_id)(X) 0
|
|
set $var(form_id)(Y) 0
|
|
$submit invoke
|
|
"
|
|
bind $item <ButtonRelease-1> "
|
|
set $var(form_id)(X) %x
|
|
set $var(form_id)(Y) %y
|
|
$item configure -relief raised
|
|
$submit invoke
|
|
"
|
|
}
|
|
|
|
# Set up the reset button. Wait for the /form to attach
|
|
# the -command option. There could be more that 1 reset button
|
|
# params VALUE
|
|
|
|
proc HMinput_reset {win param} {
|
|
upvar #0 HM$win var
|
|
upvar #0 $var(form_id) form
|
|
|
|
set value reset
|
|
HMextract_param $param value
|
|
|
|
set item $win.input_reset,$var(tags)
|
|
button $item -text [HMmap_esc $value]
|
|
HMwin_install $win $item
|
|
lappend form(reset_button) $item
|
|
}
|
|
|
|
# Set up the submit button. Wait for the /form to attach
|
|
# the -command option. There could be more that 1 submit button
|
|
# params: NAME, VALUE
|
|
|
|
proc HMinput_submit {win param} {
|
|
upvar #0 HM$win var
|
|
upvar #0 $var(form_id) form
|
|
|
|
HMextract_param $param name
|
|
set value submit
|
|
HMextract_param $param value
|
|
set item $win.input_submit,$var(tags)
|
|
button $item -text [HMmap_esc $value] -fg blue
|
|
HMwin_install $win $item
|
|
lappend form(submit_button) $item
|
|
# need to tie the "name=value" to this button
|
|
# save the pair and do it when we finish the submit button
|
|
catch {set form(submit_$item) [list $name $value]}
|
|
}
|
|
|
|
#########################################################################
|
|
# selection items
|
|
# They all go into a list box. We don't what to do with the listbox until
|
|
# we know how many items end up in it. Gather up the data for the "options"
|
|
# and finish up in the /select tag
|
|
# params: NAME (reqd), MULTIPLE, SIZE
|
|
|
|
proc HMtag_select {win param text} {
|
|
upvar #0 HM$win var
|
|
upvar #0 $var(form_id) form
|
|
|
|
HMextract_param $param name
|
|
set size 5; HMextract_param $param size
|
|
set form(select_size) $size
|
|
set form(select_name) $name
|
|
set form(select_values) "" ;# list of values to submit
|
|
if {[HMextract_param $param multiple]} {
|
|
set mode multiple
|
|
} else {
|
|
set mode single
|
|
}
|
|
set item $win.select,$var(tags)
|
|
frame $item
|
|
set form(select_frame) $item
|
|
listbox $item.list -selectmode $mode -width 0 -exportselection 0
|
|
HMwin_install $win $item
|
|
}
|
|
|
|
# select options
|
|
# The values returned in the query may be different from those
|
|
# displayed in the listbox, so we need to keep a separate list of
|
|
# query values.
|
|
# form(select_default) - contains the default query value
|
|
# form(select_frame) - name of the listbox's containing frame
|
|
# form(select_values) - list of query values
|
|
# params: VALUE, SELECTED
|
|
|
|
proc HMtag_option {win param text} {
|
|
upvar #0 HM$win var
|
|
upvar #0 $var(form_id) form
|
|
upvar $text data
|
|
set frame $form(select_frame)
|
|
|
|
# set default option (or options)
|
|
if {[HMextract_param $param selected]} {
|
|
lappend form(select_default) [$form(select_frame).list size]
|
|
}
|
|
set value [string trimright $data " \n"]
|
|
$frame.list insert end $value
|
|
HMextract_param $param value
|
|
lappend form(select_values) $value
|
|
set data ""
|
|
}
|
|
|
|
# do most of the work here!
|
|
# if SIZE>1, make the listbox. Otherwise make a "drop-down"
|
|
# listbox with a label in it
|
|
# If the # of items > size, add a scroll bar
|
|
# This should probably be broken up into callbacks to make it
|
|
# easier to override the "look".
|
|
|
|
proc HMtag_/select {win param text} {
|
|
upvar #0 HM$win var
|
|
upvar #0 $var(form_id) form
|
|
set frame $form(select_frame)
|
|
set size $form(select_size)
|
|
set items [$frame.list size]
|
|
|
|
# set the defaults and reset button
|
|
append form(reset) ";$frame.list selection clear 0 $items"
|
|
if {[info exists form(select_default)]} {
|
|
foreach i $form(select_default) {
|
|
$frame.list selection set $i
|
|
append form(reset) ";$frame.list selection set $i"
|
|
}
|
|
} else {
|
|
$frame.list selection set 0
|
|
append form(reset) ";$frame.list selection set 0"
|
|
}
|
|
|
|
# set up the submit button. This is the general case. For single
|
|
# selections we could be smarter
|
|
|
|
for {set i 0} {$i < $size} {incr i} {
|
|
set value [format {[expr {[%s selection includes %s] ? {%s} : {}}]} \
|
|
$frame.list $i [lindex $form(select_values) $i]]
|
|
lappend form(submit) [list $form(select_name) $value]
|
|
}
|
|
|
|
# show the listbox - no scroll bar
|
|
|
|
if {$size > 1 && $items <= $size} {
|
|
$frame.list configure -height $items
|
|
pack $frame.list
|
|
|
|
# Listbox with scrollbar
|
|
|
|
} elseif {$size > 1} {
|
|
scrollbar $frame.scroll -command "$frame.list yview" \
|
|
-orient v -takefocus 0
|
|
$frame.list configure -height $size \
|
|
-yscrollcommand "$frame.scroll set"
|
|
pack $frame.list $frame.scroll -side right -fill y
|
|
|
|
# This is a joke!
|
|
|
|
} else {
|
|
scrollbar $frame.scroll -command "$frame.list yview" \
|
|
-orient h -takefocus 0
|
|
$frame.list configure -height 1 \
|
|
-yscrollcommand "$frame.scroll set"
|
|
pack $frame.list $frame.scroll -side top -fill x
|
|
}
|
|
|
|
# cleanup
|
|
|
|
foreach i [array names form select_*] {
|
|
unset form($i)
|
|
}
|
|
}
|
|
|
|
# do a text area (multi-line text)
|
|
# params: COLS, NAME, ROWS (all reqd, but default rows and cols anyway)
|
|
|
|
proc HMtag_textarea {win param text} {
|
|
upvar #0 HM$win var
|
|
upvar #0 $var(form_id) form
|
|
upvar $text data
|
|
|
|
set rows 5; HMextract_param $param rows
|
|
set cols 30; HMextract_param $param cols
|
|
HMextract_param $param name
|
|
set item $win.textarea,$var(tags)
|
|
frame $item
|
|
text $item.text -width $cols -height $rows -wrap none \
|
|
-yscrollcommand "$item.scroll set" -padx 3 -pady 3
|
|
scrollbar $item.scroll -command "$item.text yview" -orient v
|
|
$item.text insert 1.0 $data
|
|
HMwin_install $win $item
|
|
pack $item.text $item.scroll -side right -fill y
|
|
lappend form(submit) [list $name "\[$item.text get 0.0 end]"]
|
|
append form(reset) ";$item.text delete 1.0 end; \
|
|
$item.text insert 1.0 [list $data]"
|
|
set data ""
|
|
}
|
|
|
|
# procedure to install windows into the text widget
|
|
# - win: name of the text widget
|
|
# - item: name of widget to install
|
|
|
|
proc HMwin_install {win item} {
|
|
upvar #0 HM$win var
|
|
$win window create $var(S_insert) -window $item -align bottom
|
|
$win tag add indent$var(level) $item
|
|
set focus [expr {[winfo class $item] != "Frame"}]
|
|
$item configure -takefocus $focus
|
|
bind $item <FocusIn> "$win see $item"
|
|
}
|
|
|
|
#####################################################################
|
|
# Assemble and submit the query
|
|
# each list element in "stuff" is a name/value pair
|
|
# - The names are the NAME parameters of the various fields
|
|
# - The values get run through "subst" to extract the values
|
|
# - We do the user callback with the list of name value pairs
|
|
|
|
proc HMsubmit_button {win form_id param stuff} {
|
|
upvar #0 HM$win var
|
|
upvar #0 $form_id form
|
|
set query ""
|
|
foreach pair $stuff {
|
|
set value [subst [lindex $pair 1]]
|
|
if {$value != ""} {
|
|
set item [lindex $pair 0]
|
|
lappend query $item $value
|
|
}
|
|
}
|
|
# this is the user callback.
|
|
HMsubmit_form $win $param $query
|
|
}
|
|
|
|
# sample user callback for form submission
|
|
# should be replaced by the application
|
|
# Sample version generates a string suitable for http
|
|
|
|
proc HMsubmit_form {win param query} {
|
|
set result ""
|
|
set sep ""
|
|
foreach i $query {
|
|
append result $sep [HMmap_reply $i]
|
|
if {$sep != "="} {set sep =} {set sep &}
|
|
}
|
|
puts $result
|
|
}
|
|
|
|
# do x-www-urlencoded character mapping
|
|
# The spec says: "non-alphanumeric characters are replaced by '%HH'"
|
|
|
|
set HMalphanumeric a-zA-Z0-9 ;# definition of alphanumeric character class
|
|
for {set i 1} {$i <= 256} {incr i} {
|
|
set c [format %c $i]
|
|
if {![string match \[$HMalphanumeric\] $c]} {
|
|
set HMform_map($c) %[format %.2x $i]
|
|
}
|
|
}
|
|
|
|
# These are handled specially
|
|
array set HMform_map {
|
|
" " + \n %0d%0a
|
|
}
|
|
|
|
# 1 leave alphanumerics characters alone
|
|
# 2 Convert every other character to an array lookup
|
|
# 3 Escape constructs that are "special" to the tcl parser
|
|
# 4 "subst" the result, doing all the array substitutions
|
|
|
|
proc HMmap_reply {string} {
|
|
global HMform_map HMalphanumeric
|
|
regsub -all \[^$HMalphanumeric\] $string {$HMform_map(&)} string
|
|
regsub -all \n $string {\\n} string
|
|
regsub -all \t $string {\\t} string
|
|
regsub -all {[][{})\\]\)} $string {\\&} string
|
|
return [subst $string]
|
|
}
|
|
|
|
# convert a x-www-urlencoded string int a a list of name/value pairs
|
|
|
|
# 1 convert a=b&c=d... to {a} {b} {c} {d}...
|
|
# 2, convert + to " "
|
|
# 3, convert %xx to char equiv
|
|
|
|
proc HMcgiDecode {data} {
|
|
set data [split $data "&="]
|
|
foreach i $data {
|
|
lappend result [cgiMap $i]
|
|
}
|
|
return $result
|
|
}
|
|
|
|
proc HMcgiMap {data} {
|
|
regsub -all {\+} $data " " data
|
|
|
|
if {[regexp % $data]} {
|
|
regsub -all {([][$\\])} $data {\\\1} data
|
|
regsub -all {%([0-9a-fA-F][0-9a-fA-F])} $data {[format %c 0x\1]} data
|
|
return [subst $data]
|
|
} else {
|
|
return $data
|
|
}
|
|
}
|
|
|
|
# There is a bug in the tcl library focus routines that prevents focus
|
|
# from every reaching an un-viewable window. Use our *own*
|
|
# version of the library routine, until the bug is fixed, make sure we
|
|
# over-ride the library version, and not the otherway around
|
|
|
|
auto_load tkFocusOK
|
|
proc tkFocusOK w {
|
|
set code [catch {$w cget -takefocus} value]
|
|
if {($code == 0) && ($value != "")} {
|
|
if {$value == 0} {
|
|
return 0
|
|
} elseif {$value == 1} {
|
|
return 1
|
|
} else {
|
|
set value [uplevel #0 $value $w]
|
|
if {$value != ""} {
|
|
return $value
|
|
}
|
|
}
|
|
}
|
|
set code [catch {$w cget -state} value]
|
|
if {($code == 0) && ($value == "disabled")} {
|
|
return 0
|
|
}
|
|
regexp Key|Focus "[bind $w] [bind [winfo class $w]]"
|
|
}
|
|
|
|
proc setup {} {
|
|
frame .top
|
|
button .quit -command exit -text quit
|
|
label .status -textvariable Running -width 6 -relief ridge \
|
|
-bd 2 -padx 9 -pady 3
|
|
label .msg -textvariable message
|
|
frame .middle
|
|
scrollbar .yscrollbar -command ".text yview" -orient v
|
|
scrollbar .xscrollbar -command ".text xview" -orient h
|
|
option add *Text.height 40 startup
|
|
option add *Text.width 100 startup
|
|
text .text -yscrollcommand ".yscrollbar set"\
|
|
-xscrollcommand ".xscrollbar set" \
|
|
-padx 3 -pady 3 -takefocus 0
|
|
pack .top .msg .middle -side top -fill x
|
|
pack .middle -side top -fill both -expand 1
|
|
pack .yscrollbar -side left -expand 0 -fill y -in .middle
|
|
pack .text -side left -fill both -expand 1 -in .middle
|
|
pack .status .quit -in .top -side left -expand y
|
|
pack .xscrollbar -side top -expand 0 -fill x
|
|
|
|
# set up some sample keyboard bindings for the text widget
|
|
bind .entry <Return> {render $Url}
|
|
bind all <End> {.text yview end}
|
|
bind all <Home> {.text yview 0.0}
|
|
bind all <Next> {.text yview scroll 1 page}
|
|
bind all <Prior> {.text yview scroll -1 page}
|
|
}
|
|
|
|
proc render {file} {
|
|
global HM.text Url
|
|
global Running message
|
|
|
|
set fragment ""
|
|
regexp {([^#]*)#(.+)} $file dummy file fragment
|
|
if {$file == "" && $fragment != ""} {
|
|
HMgoto .text $fragment
|
|
return
|
|
}
|
|
HMreset_win .text
|
|
set Running busy
|
|
set message "Displaying $file"
|
|
update idletasks
|
|
if {$fragment != ""} {
|
|
HMgoto .text $fragment
|
|
}
|
|
set Url $file
|
|
HMparse_html [get_html $file] {HMrender .text}
|
|
set Running ready
|
|
HMset_state .text -stop 1 ;# stop rendering previous page if busy
|
|
set message ""
|
|
}
|
|
proc get_html {file} {
|
|
global Home
|
|
if {[catch {set fd [open $file]} msg]} {
|
|
return "
|
|
<title>Bad file $file</title>
|
|
<h1>Error reading $file</h1><p>
|
|
$msg<hr>
|
|
<a href=$Home>Go home</a>
|
|
"
|
|
}
|
|
set result [read $fd]
|
|
close $fd
|
|
return $result
|
|
}
|
|
proc HMlink_callback {win href} {
|
|
global Url
|
|
|
|
if {[string match #* $href]} {
|
|
render $href
|
|
return
|
|
}
|
|
if {[string match /* $href]} {
|
|
set Url $href
|
|
} else {
|
|
set Url [file dirname $Url]/$href
|
|
}
|
|
update
|
|
render $Url
|
|
}
|
|
proc HMset_image {win handle src} {
|
|
global Url message
|
|
if {[string match /* $src]} {
|
|
set image $src
|
|
} else {
|
|
set image [file dirname $Url]/$src
|
|
}
|
|
set message "fetching image $image"
|
|
update
|
|
if {[string first " $image " " [image names] "] >= 0} {
|
|
HMgot_image $handle $image
|
|
} else {
|
|
set type photo
|
|
if {[file extension $image] == ".bmp"} {set type bitmap}
|
|
catch {image create $type $image -file $image} image
|
|
HMgot_image $handle $image
|
|
}
|
|
}
|
|
proc HMtag_base {win param text} {
|
|
global Url
|
|
upvar #0 HM$win var
|
|
HMextract_param $param href Url
|
|
}
|
|
proc HMset_font {win tag font} {
|
|
global message Fonts
|
|
if {![info exists Fonts($font)]} {
|
|
set Fonts($font) 1
|
|
.msg configure -fg blue
|
|
set message "downloading font $font"
|
|
update
|
|
}
|
|
.msg configure -fg black
|
|
set message ""
|
|
catch {$win tag configure $tag -font $font} message
|
|
}
|
|
|
|
set Size 3 ;# font size adjustment
|
|
set Indent 1.2 ;# tab spacing (cm)
|
|
set Home [pwd]/doc/index.html ;# home document
|
|
if [info exists argv(1)] {set Home [lindex $argv 0]}
|
|
set Url $Home ;# current file
|
|
set Running busy ;# page status
|
|
set message "" ;# message line
|
|
|
|
catch setup ;# the catch lets us re-source this file
|
|
HMinit_win .text
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HMset_state .text -size $Size
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HMset_indent .text $Indent
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render $Home
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