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86530b38 AT |
1 | package Tk::Font; |
2 | use vars qw($VERSION); | |
3 | $VERSION = '3.023'; # $Id: //depot/Tk8/Tk/Font.pm#23 $ | |
4 | require Tk::Widget; | |
5 | use strict; | |
6 | use Carp; | |
7 | use overload '""' => 'as_string'; | |
8 | sub as_string { return ${$_[0]} } | |
9 | ||
10 | *MainWindow = \&Tk::Widget::MainWindow; | |
11 | ||
12 | foreach my $key (qw(actual metrics measure configure)) | |
13 | { | |
14 | no strict 'refs'; | |
15 | *{$key} = sub { shift->Tk::font($key,@_) }; | |
16 | } | |
17 | ||
18 | Construct Tk::Widget 'Font'; | |
19 | ||
20 | my @xfield = qw(foundry family weight slant swidth adstyle pixel | |
21 | point xres yres space avgwidth registry encoding); | |
22 | my @tkfield = qw(family size weight slant underline overstrike); | |
23 | my %tkfield = map { $_ => "-$_" } @tkfield; | |
24 | ||
25 | sub _xonly { my $old = '*'; return $old } | |
26 | ||
27 | sub Pixel | |
28 | { | |
29 | my $me = shift; | |
30 | my $old = $me->configure('-size'); | |
31 | $old = '*' if ($old > 0); | |
32 | if (@_) | |
33 | { | |
34 | $me->configure(-size => -$_[0]); | |
35 | } | |
36 | return $old; | |
37 | } | |
38 | ||
39 | sub Point | |
40 | { | |
41 | my $me = shift; | |
42 | my $old = 10*$me->configure('-size'); | |
43 | $old = '*' if ($old < 0); | |
44 | if (@_) | |
45 | { | |
46 | $me->configure(-size => int($_[0]/10)); | |
47 | } | |
48 | return $old; | |
49 | } | |
50 | ||
51 | foreach my $f (@tkfield,@xfield) | |
52 | { | |
53 | no strict 'refs'; | |
54 | my $sub = "\u$f"; | |
55 | unless (defined &{$sub}) | |
56 | { | |
57 | my $key = $tkfield{$f}; | |
58 | if (defined $key) | |
59 | { | |
60 | *{$sub} = sub { shift->configure($key,@_) }; | |
61 | } | |
62 | else | |
63 | { | |
64 | *{$sub} = \&_xonly; | |
65 | } | |
66 | } | |
67 | } | |
68 | ||
69 | sub new | |
70 | { | |
71 | my $pkg = shift; | |
72 | my $w = shift; | |
73 | my $me; | |
74 | if (scalar(@_) == 1) | |
75 | { | |
76 | $me = $w->Tk::font('create',@_); | |
77 | } | |
78 | else | |
79 | { | |
80 | croak 'Odd number of args' if @_ & 1; | |
81 | my %attr; | |
82 | while (@_) | |
83 | { | |
84 | my $k = shift; | |
85 | my $v = shift; | |
86 | my $t = (substr($k,0,1) eq '-') ? $k : $tkfield{$k}; | |
87 | if (defined $t) | |
88 | { | |
89 | $attr{$t} = $v; | |
90 | } | |
91 | elsif ($k eq 'point') | |
92 | { | |
93 | $attr{'-size'} = -int($v/10+0.5); | |
94 | } | |
95 | elsif ($k eq 'pixel') | |
96 | { | |
97 | $attr{'-size'} = -$v; | |
98 | } | |
99 | else | |
100 | { | |
101 | carp "$k ignored" if $^W; | |
102 | } | |
103 | } | |
104 | $me = $w->Tk::font('create',%attr); | |
105 | } | |
106 | return bless $me,$pkg; | |
107 | } | |
108 | ||
109 | sub Pattern | |
110 | { | |
111 | my $me = shift; | |
112 | my @str; | |
113 | foreach my $f (@xfield) | |
114 | { | |
115 | my $meth = "\u$f"; | |
116 | my $str = $me->$meth(); | |
117 | if ($f eq 'family') | |
118 | { | |
119 | $str =~ s/(?:Times\s+New\s+Roman|New York)/Times/i; | |
120 | $str =~ s/(?:Courier\s+New|Monaco)/Courier/i; | |
121 | $str =~ s/(?:Arial|Geneva)/Helvetica/i; | |
122 | } | |
123 | elsif ($f eq 'slant') | |
124 | { | |
125 | $str = substr($str,0,1); | |
126 | } | |
127 | elsif ($f eq 'weight') | |
128 | { | |
129 | $str = 'medium' if ($str eq 'normal'); | |
130 | } | |
131 | push(@str,$str); | |
132 | } | |
133 | return join('-', '', @str); | |
134 | } | |
135 | ||
136 | sub Name | |
137 | { | |
138 | my $me = shift; | |
139 | return $$me if (!wantarray || ($^O eq 'MSWin32')); | |
140 | my $max = shift || 128; | |
141 | my $w = $me->MainWindow; | |
142 | my $d = $w->Display; | |
143 | return $d->XListFonts($me->Pattern,$max); | |
144 | } | |
145 | ||
146 | sub Clone | |
147 | { | |
148 | my $me = shift; | |
149 | return ref($me)->new($me,$me->actual,@_); | |
150 | } | |
151 | ||
152 | sub ascent | |
153 | { | |
154 | return shift->metrics('-ascent'); | |
155 | } | |
156 | ||
157 | sub descent | |
158 | { | |
159 | return shift->metrics('-descent'); | |
160 | } | |
161 | ||
162 | 1; | |
163 |