1Ace::Graphics::GlyphFacUtsoerry(C3o)ntributed Perl DocumAecnet:a:tGiroanphics::GlyphFactory(3)
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6 Ace::Graphics::GlyphFactory - Create Ace::Graphics::Glyphs
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9 use Ace::Graphics::GlyphFactory;
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11 my $factory = Ace::Graphics::GlyphFactory($glyph_name,@options);
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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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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
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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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85 Please report them.
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88 Ace::Sequence, Ace::Sequence::Feature, Ace::Graphics::Panel,
89 Ace::Graphics::Track, Ace::Graphics::Glyph
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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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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 v5.30.0 2019-07-26 Ace::Graphics::GlyphFactory(3)