Allow pgaccess to input Japanese. See included mail.

Subject: [HACKERS] pgaccess Japanese input capability patch
From: Tatsuo Ishii <t-ishii@sra.co.jp>
To: teo@flex.ro
Cc: pgsql-hackers@postgresql.org, pgsql-interfaces@postgresql.org
Date: Sat, 24 Feb 2001 21:41:14 +0900

Hi Teodorescu,

I have made patches which enable pgaccess to input Japanese characters
in the table editing window. As you might know, to input Japanese
characters, we first type in "hiragana" then convert it to "kanji". To
make this proccess transparent to tcl application programs, libraries
are provided with localized version of Tcl/Tk. The patches bind
certain keys to initiate a function (kanjiInput) that is responsible
for the conversion process. If the function is not available, those
keys will not be binded.

Comments?
--
Tatsuo Ishii

src/bin/pgaccess/lib/tables.tcl

@@ -813,6 +813,10 @@ set PgAcVar(mw,$wn,toprec) 0
 setScrollbar $wn
 if {$PgAcVar(mw,$wn,updatable)} then {
 	$wn.c bind q <Key> "Tables::editText $wn %A %K"
+	if {[info commands kanjiInput] == "kanjiInput"} then {
+		$wn.c bind q <Control-backslash> "pgaccess_kinput_start %W";
+		$wn.c bind q <Control-Kanji> "pg_access_kinput_start %W";
+	}
 } else {
 	$wn.c bind q <Key> {}
 }
@@ -2161,3 +2165,80 @@ proc vTclWindow.pgaw:Permissions {base} {
 	grid $base.fb.btncancel \
 		-in .pgaw:Permissions.fb -column 1 -row 0 -columnspan 1 -rowspan 1 
 }
+
+#
+# NOTE: following two procedures _kinput_trace_root and _kinput_trace_over 
+# were originaly part of kinput.tcl.
+# -- Tatuso Ishii 2000/08/18
+
+# kinput.tcl --
+#
+# This file contains Tcl procedures used to input Japanese text.
+#
+# $Header: /cvsroot/pgsql/src/bin/pgaccess/lib/Attic/tables.tcl,v 1.7 2001/02/26 05:15:48 ishii Exp $
+#
+# Copyright (c) 1993  Software Research Associates, Inc.
+#
+# Permission to use, copy, modify, and distribute this software and its
+# documentation for any purpose and without fee is hereby granted, provided
+# that the above copyright notice appear in all copies and that both that
+# copyright notice and this permission notice appear in supporting
+# documentation, and that the name of Software Research Associates not be
+# used in advertising or publicity pertaining to distribution of the
+# software without specific, written prior permission.  Software Research
+# Associates makes no representations about the suitability of this software
+# for any purpose.  It is provided "as is" without express or implied
+# warranty.
+#
+
+# The procedure below is invoked in order to start Japanese text input
+# for the specified widget.  It sends a request to the input server to
+# start conversion on that widget.
+# Second argument specifies input style.  Valid values are "over" (for
+# over-the-spot style) and "root" (for root window style). See X11R5
+# Xlib manual for the meaning of these styles). The default is root
+# window style.
+
+proc pgaccess_kinput_start {w {style root}} {
+    global _kinput_priv
+    catch {unset _kinput_priv($w)}
+    if {$style=="over"} then {
+ 	set spot [_kinput_spot $w]
+	if {"$spot" != ""} then {
+	    trace variable _kinput_priv($w) w _pgaccess_kinput_trace_$style
+	    kanjiInput start $w \
+		-variable _kinput_priv($w) \
+		-inputStyle over \
+		-foreground [_kinput_attr $w -foreground] \
+		-background [_kinput_attr $w -background] \
+		-fonts [list [_kinput_attr $w -font] \
+			    [_kinput_attr $w -kanjifont]] \
+		-clientArea [_kinput_area $w] \
+		-spot $spot
+	    return
+	}
+    }
+    trace variable _kinput_priv($w) w _pgaccess_kinput_trace_root
+    kanjiInput start $w -variable _kinput_priv($w) -inputStyle root
+}
+
+# for root style
+proc _pgaccess_kinput_trace_root {name1 name2 op} {
+    global PgAcVar
+    set wn [string trimright $name2 ".c"]
+    upvar #0 $name1 trvar
+    set c $trvar($name2)
+    Tables::editText $wn $c $c
+    unset $trvar($name2)
+}
+
+# for over-the-spot style
+proc _pgaccess_kinput_trace_over {name1 name2 op} {
+    global PgAcVar
+    set wn [string trimright $name2 ".c"]
+    upvar #0 $name1 trvar
+    set c $trvar($name2)
+    Tables::editText $wn $c $c
+    kinput_send_spot $name2
+    unset $trvar($name2)
+}