Ace::Graphics::GlyphFactory(3pm)

1Ace::Graphics::GlyphFacUtsoerry(C3o)ntributed Perl DocumAecnet:a:tGiroanphics::GlyphFactory(3)
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NAME

6       Ace::Graphics::GlyphFactory - Create Ace::Graphics::Glyphs
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SYNOPSIS

9         use Ace::Graphics::GlyphFactory;
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11         my $factory = Ace::Graphics::GlyphFactory($glyph_name,@options);
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DESCRIPTION

14       The Ace::Graphics::GlyphFactory class is used internally by
15       Ace::Graphics::Track and Ace::Graphics::Glyph to hold the options
16       pertaining to a set of related glyphs and creating them on demand.
17       This class is not ordinarily useful to the end-developer.
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METHODS

20       This section describes the class and object methods for
21       Ace::Graphics::GlyphFactory.
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23   CONSTRUCTORS
24       There is only one constructor, the new() method.  It is ordinarily
25       called by Ace::Graphics::Track, in the make_factory() subroutine.
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27       $factory = Ace::Graphics::GlyphFactory->new($glyph_name,@options)
28           The new() method creates a new factory object.  The object will
29           create glyphs of type $glyph_name, and using the options specified
30           in @options.  Generic options are described in
31           Ace::Graphics::Panel, and specific options are described in each of
32           the Ace::Graphics::Glyph::* manual pages.  =back
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34   OBJECT METHODS
35       Once a track is created, the following methods can be invoked:
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37       $glyph = $factory->glyph($feature)
38           Given a sequence feature, creates an Ace::Graphics::Glyph object to
39           display it.  The various attributes of the glyph are set from the
40           options provided at factory creation time.
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42       $option = $factory->option($option_name [,$new_option])
43           Given an option name, returns its value.  If a second argument is
44           provided, sets the option to the new value and returns its previous
45           one.
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47       $index = $factory->fgcolor
48           Returns the desired foreground color for the glyphs in the form of
49           an GD::Image color index.  This may be the one of the special
50           colors gdBrushed and gdStyled.  This is only useful while the
51           enclosing Ace::Graphics::Panel object is rendering the object.  In
52           other contexts it returns undef.
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54       $scale = $factory->scale([$scale])
55           Get or set the scale, in pixels/bp, for the glyph.  This is
56           ordinarily set by the Ace::Graphics::Track object just prior to
57           rendering, and called by each glyphs' map_pt() method when
58           performing the rendering.
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60       $color = $factory->bgcolor([$color])
61           Get or set the background color for the glyphs.
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63       $color = $factory->fillcolor([$color])
64           Get or set the fill color for the glyphs.
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66       $font = $factory->font([$font])
67           Get or set the font to use for rendering the glyph.
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69       $color = $factory->fontcolor
70           Get the color for the font (to set it, use fgcolor()).  This is
71           subtly different from fgcolor() itself, because it will never
72           return a styled color, such as gdBrushed.
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74       $panel = $factory->panel([$panel])
75           Get or set the panel that contains the GD::Image object used by
76           this factory.
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78       $index = $factory->translate($color)
79       @rgb = $factory->rgb($index)
80           These are convenience procedures that are passed through to the
81           enclosing Panel object and have the same effect as the like-named
82           methods in that class.  See Ace::Graphics::Panel.
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BUGS

85       Please report them.
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AUTHOR

92       Lincoln Stein <lstein@cshl.org>.
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94       Copyright (c) 2001 Cold Spring Harbor Laboratory
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96       This library is free software; you can redistribute it and/or modify it
97       under the same terms as Perl itself.  See DISCLAIMER.txt for
98       disclaimers of warranty.
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POD ERRORS

101       Hey! The above document had some coding errors, which are explained
102       below:
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104       Around line 191:
105           You forgot a '=back' before '=head2'
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109perl v5.34.0                      2022-01-20    Ace::Graphics::GlyphFactory(3)