src/eric7/Documentation/Source/eric7.Graphics.GraphicsUtilities.html

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<h1>eric7.Graphics.GraphicsUtilities</h1>

<p>
Module implementing some graphical utility functions.
</p>
<h3>Global Attributes</h3>

<table>
<tr><td>None</td></tr>
</table>
<h3>Classes</h3>

<table>

<tr>
<td><a href="#RecursionError">RecursionError</a></td>
<td>Unable to calculate result because of recursive structure.</td>
</tr>
</table>
<h3>Functions</h3>

<table>

<tr>
<td><a href="#_buildChildrenLists">_buildChildrenLists</a></td>
<td>Function to build up parent - child relationships.</td>
</tr>
<tr>
<td><a href="#sort">sort</a></td>
<td>Function to sort widgets topographically.</td>
</tr>
</table>
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<hr />
<a NAME="RecursionError" ID="RecursionError"></a>
<h2>RecursionError</h2>

<p>
    Unable to calculate result because of recursive structure.
</p>
<h3>Derived from</h3>
OverflowError, ValueError
<h3>Class Attributes</h3>

<table>
<tr><td>None</td></tr>
</table>
<h3>Class Methods</h3>

<table>
<tr><td>None</td></tr>
</table>
<h3>Methods</h3>

<table>
<tr><td>None</td></tr>
</table>
<h3>Static Methods</h3>

<table>
<tr><td>None</td></tr>
</table>

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<a NAME="_buildChildrenLists" ID="_buildChildrenLists"></a>
<h2>_buildChildrenLists</h2>
<b>_buildChildrenLists</b>(<i>routes</i>)

<p>
    Function to build up parent - child relationships.
</p>
<p>
    Taken from Boa Constructor.
</p>
<dl>

<dt><i>routes</i> (list of tuple of (str, str))</dt>
<dd>
list of routes between nodes
</dd>
</dl>
<dl>
<dt>Return:</dt>
<dd>
dictionary of child and dictionary of parent relationships
</dd>
</dl>
<dl>
<dt>Return Type:</dt>
<dd>
tuple of (dict, dict)
</dd>
</dl>
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<a NAME="sort" ID="sort"></a>
<h2>sort</h2>
<b>sort</b>(<i>nodes, routes, noRecursion=False</i>)

<p>
    Function to sort widgets topographically.
</p>
<p>
    Passed a list of nodes and a list of source, dest routes, it attempts
    to create a list of stages, where each sub list is one stage in a process.
</p>
<p>
    The algorithm was taken from Boa Constructor.
</p>
<dl>

<dt><i>nodes</i> (str)</dt>
<dd>
list of nodes to be sorted
</dd>
<dt><i>routes</i> (list of tuple of (str, str))</dt>
<dd>
list of routes between the nodes
</dd>
<dt><i>noRecursion</i> (bool)</dt>
<dd>
flag indicating, if recursion errors should be raised
</dd>
</dl>
<dl>
<dt>Return:</dt>
<dd>
list of stages
</dd>
</dl>
<dl>
<dt>Return Type:</dt>
<dd>
list of lists of str
</dd>
</dl>
<dl>

<dt>Raises <b>RecursionError</b>:</dt>
<dd>
a recursion error was detected
</dd>
</dl>
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