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86530b38 AT |
1 | package Tk::Region; |
2 | ||
3 | # Ideas in progress do not document ... | |
4 | ||
5 | use strict; | |
6 | ||
7 | use vars qw($VERSION); | |
8 | $VERSION = '3.004'; # $Id: //depot/Tk8/Tk/Region.pm#4 $ | |
9 | ||
10 | use Tk::Widget (); | |
11 | ||
12 | Construct Tk::Widget 'Region'; | |
13 | ||
14 | my %index = (-widget => 1, '-x' => 2, '-y' => 3, -width => 4, -height => 5); | |
15 | ||
16 | sub _attr | |
17 | { | |
18 | my ($obj,$key,$val) = @_; | |
19 | if (@_ > 2) | |
20 | { | |
21 | $obj->{$key} = $val; | |
22 | } | |
23 | return $obj->{$key} | |
24 | } | |
25 | ||
26 | foreach my $name (qw(widget x y width height)) | |
27 | { | |
28 | my $key = "-$name"; | |
29 | no strict 'refs'; | |
30 | *{$name} = sub { shift->_attr($key,@_) }; | |
31 | } | |
32 | ||
33 | sub new | |
34 | { | |
35 | my $class = shift; | |
36 | my $widget = shift; | |
37 | my $obj = bless [\%index,$widget,0,0,0,0],$class; | |
38 | $obj->configure(@_); | |
39 | } | |
40 | ||
41 | sub cfgDefault | |
42 | { | |
43 | my ($class,$key) = @_; | |
44 | return undef; | |
45 | } | |
46 | ||
47 | sub cfgName | |
48 | { | |
49 | my ($class,$key) = @_; | |
50 | $key =~ s/^-//; | |
51 | return lcfirst($key); | |
52 | } | |
53 | ||
54 | sub cfgClass | |
55 | { | |
56 | return ucfirst(shift->cfgName(@_)); | |
57 | } | |
58 | ||
59 | sub configure | |
60 | { | |
61 | my $obj = shift; | |
62 | my @results; | |
63 | if (@_ > 1) | |
64 | { | |
65 | while (@_) | |
66 | { | |
67 | my $key = shift; | |
68 | my $val = shift; | |
69 | if (exists $obj->{$key}) | |
70 | { | |
71 | $obj->{$key} = $val; | |
72 | } | |
73 | else | |
74 | { | |
75 | my ($meth) = $key =~ /^-(\w+)$/; | |
76 | croak("Invalid option $key") unless $obj->can($meth); | |
77 | $obj->$meth($val); | |
78 | } | |
79 | } | |
80 | } | |
81 | elsif (@_ == 1) | |
82 | { | |
83 | my $key = shift; | |
84 | my $value = $obj->cget($key); | |
85 | push(@results,$key,$obj->cfgName($key),$obj->cfgClass($key),$obj->cfgDefault($key),$value); | |
86 | } | |
87 | else | |
88 | { | |
89 | foreach my $key (sort keys %$obj) | |
90 | { | |
91 | push(@results,scalar($obj->configure($key))) | |
92 | } | |
93 | } | |
94 | return wantarray ? @results : \@results; | |
95 | } | |
96 | ||
97 | sub cget | |
98 | { | |
99 | my $obj = shift; | |
100 | my $key = shift; | |
101 | return $obj->{$key} if exists $obj->{$key}; | |
102 | my ($meth) = $key =~ /^-(\w+)$/; | |
103 | croak("Invalid option $key") unless $obj->can($meth); | |
104 | return $obj->$meth(); | |
105 | } | |
106 | ||
107 | sub bbox | |
108 | { | |
109 | my $obj = shift; | |
110 | my @results; | |
111 | if (@_) | |
112 | { | |
113 | my $ref = (@_ == 1) ? shift : \@_; | |
114 | my ($x1,$y1,$x2,$y2) = (ref $ref) ? @$ref : split(/\s+/,$ref); | |
115 | ($x2,$x1) = ($x1,$x2) if ($x2 < $x1); | |
116 | ($y2,$y1) = ($y1,$y2) if ($y2 < $y1); | |
117 | $obj->width($x2-$x1); | |
118 | $obj->height($y2-$y1); | |
119 | $obj->x($x1); | |
120 | $obj->y($y1); | |
121 | } | |
122 | else | |
123 | { | |
124 | my $x = $obj->x; | |
125 | my $y = $obj->x; | |
126 | push(@results,$x,$y,$x+$obj->width,$y+$obj->height); | |
127 | } | |
128 | return wantarray ? @results : \@results; | |
129 | } | |
130 | ||
131 | sub rootx | |
132 | { | |
133 | my $obj = shift; | |
134 | if (@_) | |
135 | { | |
136 | my $x = shift; | |
137 | $obj->x($x-$obj->widget->rootx); | |
138 | } | |
139 | return $obj->widget->rootx + $obj->{'-x'} | |
140 | } | |
141 | ||
142 | sub rooty | |
143 | { | |
144 | my $obj = shift; | |
145 | if (@_) | |
146 | { | |
147 | my $y = shift; | |
148 | $obj->y($y-$obj->widget->rootx); | |
149 | } | |
150 | return $obj->widget->rooty + $obj->{'-y'} | |
151 | } | |
152 | ||
153 | sub rootxy | |
154 | { | |
155 | my $obj = shift; | |
156 | if (@_) | |
157 | { | |
158 | $obj->rootx(shift); | |
159 | $obj->rooty(shift); | |
160 | } | |
161 | my @results = ($obj->rootx,$obj->rooty); | |
162 | return wantarray ? @results : \@results; | |
163 | } | |
164 | ||
165 | sub rootbbox | |
166 | { | |
167 | my $obj = shift; | |
168 | my ($x1,$y1) = $obj->rootxy; | |
169 | my $x2 = $x1+$obj->width; | |
170 | my $y2 = $y1+$obj->height; | |
171 | my @results = ($x1,$y1,$x2,$y2); | |
172 | return wantarray ? @results : \@results; | |
173 | } | |
174 | ||
175 | ||
176 | *Width = \&width; | |
177 | *Height = \&height; | |
178 | *X = \&rootx; | |
179 | *Y = \&rooty; | |
180 | ||
181 | 1; | |
182 | __END__ |