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<h1>RoboFab RKerning</h1>
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<h3>Usage</h3>
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<div class="pythonsource"><pre># robofab manual<br># Kerning object<br># usage examples<br> <br><span class="py_key">f</span> = <span class="py_key">CurrentFont</span>()<br><span class="py_res">print</span> <span class="py_key">f</span>.<span class="py_key">kerning</span><br> <br># getting a value from the kerning dictionary<br><span class="py_res">print</span> <span class="py_key">f</span>.<span class="py_key">kerning</span>[(<span class="py_str">'V'</span>, <span class="py_str">'A'</span>)]<br><span class="py_res">print</span> <span class="py_key">f</span>.<span class="py_key">kerning</span>[(<span class="py_str">'T'</span>, <span class="py_str">'X'</span>)]<br><span class="py_res">print</span> <span class="py_key">f</span>.<span class="py_key">kerning</span>.<span class="py_key">keys</span>()<br> <br></pre></div><div class="pythonsourcetitle"><a href="examples/usageKerning.py" target="new">download examples/usageKerning.py</a></div>
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<div class="pythonoutput"><pre>< <span class="py_key">RKerning</span> <span class="py_res">for</span> <span class="py_key">Mailer</span>-<span class="py_key">Regular</span> ><br> -<span class="py_num">123</span><br> <span class="py_key">None</span><br> [(<span class="py_str">'X'</span>, <span class="py_str">'emdash'</span>), <br> (<span class="py_str">'K'</span>, <span class="py_str">'v'</span>),<br> (<span class="py_str">'two'</span>, <span class="py_str">'perthousand'</span>),<br> (<span class="py_str">'guilsinglleft'</span>, <span class="py_str">'a'</span>),<br> ... <span class="py_key">etc</span>.]</pre></div>
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<h3>Description</h3>
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<p>
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RKerning is a dictionary of kerning values. RFont makes a RKerning object when it is created and makes available as aFont.kerning attribute. The keys are tuples of the glyphs listed by their names: ('T', 'e'), ('V', 'A') etc. <strong>None</strong> is returned if the pair does not exist, rather than raising an IndexError. The parent of a kerning object is usually a Font.
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</p>
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<h3>Methods</h3>
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<p>
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</p>
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<ul>
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<li><strong>add(value)</strong>: add value to all kerning pairs.</li>
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<li><strong>asDict()</strong>: return the object as a plain dictionary.</li>
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<li><strong>clear()</strong>: clear all the kerning (why would you want to do that?)</li>
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<li><strong>combine(kerningDicts, overwriteExisting=True)</strong>: combine two or more kerning dictionaries. Overwrite exsisting duplicate pairs if overwriteExisting=True</li>
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<li><strong>eliminate(leftGlyphsToEliminate=None, rightGlyphsToEliminate=None, analyzeOnly=False)</strong>: eliminate pairs containing a left glyph that is in the leftGlyphsToEliminate list
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or a right glyph that is in the rightGlyphsToELiminate list.
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sideGlyphsToEliminate can be a string: 'a' or list: ['a', 'b'].
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analyzeOnly will not remove pairs. it will return a count
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of all pairs that would be removed.</li>
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<li><strong>explodeClasses(leftClassDict=None, rightClassDict=None, analyzeOnly=False)</strong>: turn class kerns into real kerning pairs. classes should
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be defined in dicts: {'O':['C', 'G', 'Q'], 'H':['B', 'D', 'E', 'F', 'I']}.
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analyzeOnly will not remove pairs. it will return a count of all pairs that would be added</li>
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<li><strong>get(aPair)</strong>: get a value. return None if the pair does not exist.</li>
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<li><strong>getAverage()</strong>: return average of all kerning pairs </li>
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<li><strong>getExtremes()</strong>: return the lowest and highest kerning values.</li>
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<li><strong>getLeft(glyphName)</strong>: Return a list of kerns with glyphName as left character. </li>
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<li><strong>getRight(glyphName)</strong>: Return a list of kerns with glyphName as right character. </li>
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<li><strong>has_key(pair)</strong>: returns True if it has the pair.</li>
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<li><strong>implodeClasses(leftClassDict=None, rightClassDict=None, analyzeOnly=False)</strong>: condense the number of kerning pairs by applying classes. This will eliminate all pairs containg the classed glyphs leaving
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pairs that contain the key glyphs behind. analyzeOnly will not
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remove pairs. it will return a count of all pairs that would be removed.</li>
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<li><strong>importAFM(path, clearExisting=True)</strong>: Import kerning pairs from an AFM file. clearExisting=True will clear all exising kerning</li>
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<li><strong>
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interpolate(sourceDictOne, sourceDictTwo, value, clearExisting=True)</strong>: interpolate the kerning between sourceDictOne and sourceDictTwo. clearExisting will clear existing
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kerning first.</li>
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<li><strong>items()</strong>: return a list of (pair, value) tuples.</li>
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<li><strong>keys()</strong>: returns a lust of available pairs.</li>
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<li><strong>minimize(minimum=10)</strong>: eliminate pairs with value less than minimum</li>
|
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<li><strong>
|
||
|
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occurrenceCount(glyphsToCount)</strong>: return a dict with glyphs as keys and the number of occurances of that glyph in the kerning pairs as the value
|
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glyphsToCount can be a string: 'a' or list: ['a', 'b']</li>
|
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<li><strong>
|
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remove(pair)</strong>: remove a kerning pair</li>
|
||
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<li><strong>round(multiple=10)</strong>: round the kerning pair values to increments of multiple</li>
|
||
|
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<li><strong>scale(value)</strong>: scale all kernng pairs by value</li>
|
||
|
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<li><strong>swapNames(swapTable)</strong>: change glyph names in all kerning pairs based on swapTable:
|
||
|
|
<div class="pythonoutput"><pre><span class="py_key">swapTable</span> = {<span class="py_str">'BeforeName'</span>:<span class="py_str">'AfterName'</span>, }</pre></div>
|
||
|
|
</li>
|
||
|
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<li><strong>update(kerningDict)</strong>: replace kerning data with the data in the given kerningDict.</li>
|
||
|
|
<li><strong>values()</strong>: return a list of kerning values</li>
|
||
|
|
</ul>
|
||
|
|
|
||
|
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</div>
|
||
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</body></html>
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