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#!/usr/local/bin/perl -w
###############################################################################
# Copyright (c) 1999 Greg Bartels
# All rights reserved.
# This program is free software.
# You can redistribute it and/or modify it under the same terms as Perl itself.
###############################################################################
###############################################################################
# This is a perl application, called gedi, implementing a text editor.
# gedi is short for Greg's EDItor. The "g" being pronounced like a "j".
###############################################################################
require 5;
use locale;
use strict;
use Tk;
use Tk::widgets qw(TextEdit);
use File::Basename;
###########################################
# check command line parameter.
# if none, start with file called 'NewFile'
# if -help, print help
# if filename, open file or die
# note, wildcard automatically gets handled by perl interpreter,
# so that @ARGV contains list of matches.
###########################################
my $argcount = @ARGV;
my ($global_filename) = @ARGV;
if ($argcount>1)
{
print "\n";
print "ERROR: too many files specified. \n";
die "\n";
}
if ($argcount == 0)
{$global_filename = 'NoName';}
if (
($global_filename eq 'help') ||
($global_filename eq '-help') ||
($global_filename eq '-h') ||
($global_filename eq '-?')
)
{
print "\n";
print "$0 expects one command line argument: \n";
print " the name of the file to edit \n";
die "\n";
}
# want FileSelect to use the last used directory as the starting directory
# store directory in $global_directory.
my $global_directory = dirname($global_filename);
##############################################
##############################################
## input parameters have been filtered.
## set up three frames to put everything into.
## menu_frame, text_frame, counter_frame
##############################################
##############################################
my $top = MainWindow->new();
# my $menu_frame = $top->Frame->pack(-anchor=>'nw');
my $text_frame = $top->Frame->pack
(-anchor=>'nw', expand=>'yes', -fill => 'both'); # autosizing
my $counter_frame = $top->Frame->pack(-anchor=>'nw');
##############################################
##############################################
## now set up text window with contents.
##############################################
##############################################
## autosizing is set up such that when the outside window is
## resized, the text box adjusts to fill everything else in.
## the text frame and the text window in the frame are both
## set up for autosizing.
my $textwindow = $text_frame->Scrolled(
'TextEdit',
exportselection => 'true', # 'sel' tag is associated with selections
# initial height, if it isnt 1, then autosizing fails
# once window shrinks below height
# and the line counters go off the screen.
# seems to be a problem with the Tk::pack command;
height => 1,
-background => 'white',
-wrap=> 'none',
-setgrid => 'true', # use this for autosizing
-scrollbars =>'se')
-> pack(-expand => 'yes' , -fill => 'both'); # autosizing
#$textwindow->FileName($global_filename);
$top->protocol('WM_DELETE_WINDOW'=>
sub{$textwindow->ConfirmExit;}
);
$SIG{INT} = sub {$textwindow->ConfirmExit;};
##############################################
##############################################
## set up current line number display
##############################################
##############################################
my $current_line_label = $counter_frame
-> Label(text=>'line: 1')
-> grid(-row=>1,-column=>1, -sticky=>'nw' );
my $total_line_label = $counter_frame
-> Label(text=>'total lines: 1')
-> grid(-row=>2,-column=>1, -sticky=>'nw' );
my $current_column_label = $counter_frame
-> Label(text=>'column: 0')
-> grid(-row=>3,-column=>1, -sticky=>'nw' );
my $insert_overstrike_mode_label = $counter_frame
-> Label(text=>' ')
-> grid(-row=>5,-column=>1, -sticky=>'nw' );
sub update_indicators
{
my ($line,$column)= split(/\./,$textwindow->index('insert'));
$current_line_label->configure (text=> "line: $line");
$current_column_label->configure (text=> "column: $column");
my ($last_line,$last_col) = split(/\./,$textwindow->index('end'));
$total_line_label->configure (text=> "total lines: $last_line");
my $mode = $textwindow->OverstrikeMode;
my $overstrke_insert='Insert Mode';
if ($mode)
{$overstrke_insert='Overstrike Mode';}
$insert_overstrike_mode_label->configure
(text=> "$overstrke_insert");
my $filename = $textwindow->FileName;
$filename = 'NoName' unless(defined($filename));
my $edit_flag='';
if($textwindow->numberChanges)
{$edit_flag='edited';}
$top->configure(-title => "Gedi $edit_flag $filename");
$textwindow->idletasks;
}
$textwindow->SetGUICallbacks (
[
\&update_indicators,
sub{$textwindow->HighlightAllPairsBracketingCursor}
]
);
##############################################
##############################################
# call back functions
##############################################
##############################################
########################################################################
my $about_pop_up_reference;
sub about_pop_up
{
my $name = ref($about_pop_up_reference);
if (defined($about_pop_up_reference))
{
$about_pop_up_reference->raise;
$about_pop_up_reference->focus;
}
else
{
my $pop = $top->Toplevel();
$pop->title("About");
$pop->Label(text=>"Gedi (Gregs EDItor)")->pack();
$pop->Label(text=>"Ver. 1.0")->pack();
$pop->Label(text=>"Copyright 1999")->pack();
$pop->Label(text=>"Greg Bartels")->pack();
$pop->Label(text=>"All Rights Reserved.")->pack();
$pop->Label(text=>"This program is free software.")->pack();
$pop->Label(text=>"You can redistribute it and/or")->pack();
$pop->Label(text=>"modify it under the same terms")->pack();
$pop->Label(text=>"as Perl itself.")->pack();
$pop->Label(text=>"Special Thanks to")->pack();
$pop->Label(text=>"Nick Ing-Simmons.")->pack();
my $button_ok = $pop->Button(text=>'OK',
command => sub {$pop->destroy();
$about_pop_up_reference = undef;
} )
->pack();
$pop->resizable('no','no');
$about_pop_up_reference = $pop;
}
}
##############################################
##############################################
## now set up menu bar
##############################################
##############################################
my $menu = $textwindow->GetMenu;
$top->configure(-menu => $menu);
##############################################
# help menu
##############################################
my $help_menu = $menu->cascade(-label=>'~Help', -tearoff => 0, -menuitems => [
[Command => 'A~bout', -command => \&about_pop_up]
]);
##############################################
# debug menu
##############################################
if (1)
{
my $debug_menu = $menu->cascade(-label=>'debug', -underline=>0);
$debug_menu->command(-label => 'Tag names', -underline=> 0 ,
-command =>
sub{
my @tags = $textwindow->tagNames();
print " @tags\n";
foreach my $tag (@tags)
{
my @ranges = $textwindow->tagRanges($tag);
print "tag: $tag ranges: @ranges \n";
}
print "\n\n\n";
my @marks = $textwindow->markNames;
print " @marks \n";
foreach my $mark (@marks)
{
my $mark_location = $textwindow->index($mark);
print "$mark is at $mark_location\n";
}
print "\n\n\n";
my @dump = $textwindow->dump ( '-tag', '1.0', '465.0' );
print "@dump \n";
print "\n\n\n";
print "showing tops children:";
my @children = $top->children();
print "@children\n";
foreach my $child (@children)
{
my $junk = ref($child);
print "ref of $child is $junk \n";
}
my $overstrike = $textwindow->OverstrikeMode;
print "Overstrike is $overstrike \n";
$textwindow->dump_array($textwindow);
});
}
##############################################
# set the window to a normal size and set the minimum size
$top->minsize(30,1);
$top->geometry("80x24");
#############################################################################
#############################################################################
#############################################################################
#############################################################################
##############################################
## this line for debug
## $top->bind('<Key>', [sub{print "ARGS: @_\n";}, Ev('k'), Ev('K') ] );
##########################################
## fill the text window with initial file.
if ($argcount)
{
if (-e $global_filename) # if it doesn't exist, make it empty
{
# it may be a big file, draw the window, and then load it
# so that we know something is happening.
$top->update;
$textwindow->Load($global_filename);
}
}
##############################################
$textwindow->CallNextGUICallback;
MainLoop();
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