This file is indexed.

/usr/share/doc/python-gdchart2-doc/doc/colours.html is in python-gdchart2-doc 0.beta1-3.4ubuntu3.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
<html>
	<head>
		<LINK REL=StyleSheet HREF="./style/style.css" TYPE="text/css">
	</head>
		<a href="pies/options.html">&lt;--previous</a> |
	<a href="./index.html">contents</a> |
	<a href="admin.html">next--&gt;</a> 

	<hr>
	<body>
        <h1>Colours</h1>
		
<p> Both PyGDChart and GDChart itself store and manipulate colours as RGB
integers. Users will be familiar with RGB colour definitions from other
contexts - for instance, colours in HTML are often specified in the form
"#RRGGBB", where each component is a hex number between 0 and 256. Since the
naked RGB integer is cumbersome to work with, the PyGDChart library provides a
number of simple facilities to make the programmer's life easier.</p>

<h2> The RGB Class </h2>

<p> The first of the colour manipulation facilities provided by PyGDChart is
the RGB class. This class is simply a way to collect and manipulate the
components of a normal RGB colour definition. It is instantiated as
follows:</p>

<code>
<table width="100%" cellpadding="1" cellspacing="0" border="0" bgcolor="#B82619">
	<tr>
		<td>
			<table cellpadding="5" cellspacing="0" border="0" bgcolor="#FFFFFF" width="100%">
				<tr>
					<td valign="top">

<pre><font color="#000000">x</font> <font color="#0000C0">=</font> <font color="#000000">gdchart</font><font color="#0000C0">.</font><font color="#000000">RGB</font><font color="#0000C0">(</font><font color="#000000">r</font><font color="#0000C0">,</font> <font color="#000000">g</font><font color="#0000C0">,</font> <font color="#000000">b</font><font color="#0000C0">)</font><font color="#000000"></font></pre>
					</td>
				</tr>
			</table>
		</td>
	</tr>
</table>

</code>

<p> After instantiation, an RGB object exposes the attributes r, g, and b,
which can be inspected and set independently. RGB objects have an __int__
method that converts the RGB colour definition to the correct numerical value.
As such, an RGB object can be used wherever a colour definition is
required.</p> 

<h2> The rgbFactory() function </h2>

<p> The rgbFactory() function is an easy way to manufacture RGB objects
corresponding to common colours: </p>

<code>
<table width="100%" cellpadding="1" cellspacing="0" border="0" bgcolor="#B82619">
	<tr>
		<td>
			<table cellpadding="5" cellspacing="0" border="0" bgcolor="#FFFFFF" width="100%">
				<tr>
					<td valign="top">

<pre><font color="#000000">x</font> <font color="#0000C0">=</font> <font color="#000000">gdchart</font><font color="#0000C0">.</font><font color="#000000">rgbFactory</font><font color="#0000C0">(</font><font color="#004080">"blue"</font><font color="#0000C0">)</font><font color="#000000"></font></pre>
					</td>
				</tr>
			</table>
		</td>
	</tr>
</table>

</code>

<p> At the moment only entries for "blue", "red", "green", "orange", "white",
"black" and "yellow" are provided, but this list will grow in future.</p> 

<h2> Colours and PyGDChart</h2>

<p> From the preceding sections, we already know of two major ways to specify a
colour to PyGDChart. Firstly, as a plain integer:</p>

<code>
<table width="100%" cellpadding="1" cellspacing="0" border="0" bgcolor="#B82619">
	<tr>
		<td>
			<table cellpadding="5" cellspacing="0" border="0" bgcolor="#FFFFFF" width="100%">
				<tr>
					<td valign="top">

<pre><font color="#000000">x</font><font color="#0000C0">.</font><font color="#000000">bg_color</font> <font color="#0000C0">=</font> <font color="#0080C0">0x3232CC</font><font color="#000000"></font></pre>
					</td>
				</tr>
			</table>
		</td>
	</tr>
</table>

</code>

<p> And secondly, as an RGB object:</p>

<code>
<table width="100%" cellpadding="1" cellspacing="0" border="0" bgcolor="#B82619">
	<tr>
		<td>
			<table cellpadding="5" cellspacing="0" border="0" bgcolor="#FFFFFF" width="100%">
				<tr>
					<td valign="top">

<pre><font color="#000000">x</font><font color="#0000C0">.</font><font color="#000000">bg_color</font> <font color="#0000C0">=</font> <font color="#000000">gdchart</font><font color="#0000C0">.</font><font color="#000000">rgbFactory</font><font color="#0000C0">(</font><font color="#004080">"blue"</font><font color="#0000C0">)</font><font color="#000000"></font></pre>
					</td>
				</tr>
			</table>
		</td>
	</tr>
</table>

</code>

<p> From the latter example, however, an even more convenient way of specifying
a colour leaps to mind. Since options in PyGDChart are "smart", we can check
wether an option has been passed a string, and call rgbFactory automatically to
generate an RGB object. This leads us to the third way of specifying colours in
PyGDChart - simply by using a descriptive string:</p>

<code>
<table width="100%" cellpadding="1" cellspacing="0" border="0" bgcolor="#B82619">
	<tr>
		<td>
			<table cellpadding="5" cellspacing="0" border="0" bgcolor="#FFFFFF" width="100%">
				<tr>
					<td valign="top">

<pre><font color="#000000">x</font><font color="#0000C0">.</font><font color="#000000">bg_color</font> <font color="#0000C0">=</font> <font color="#004080">"blue"</font><font color="#000000"></font></pre>
					</td>
				</tr>
			</table>
		</td>
	</tr>
</table>

</code>





	</body>
	<hr>
    <table width="100%">
        <tr>
            <td>
                	<a href="pies/options.html">&lt;--previous</a> |
	<a href="./index.html">contents</a> |
	<a href="admin.html">next--&gt;</a> 

            </td>
            <td align="right">
                (12/31/03)
            </td>
        </tr>
    </table>
	<center> PyGDChart User's Manual </center>
</html>