Building OpenType Kerning Feature »Īfter you have defined kerning for all your classes you need to create/update your kern feature. When building variable fonts, kerning pairs that don’t exist in corner masters are assumed to have the value 0 but kerning pairs that don’t exist in intermediate masters get the interpolated value. To ensure that you have the same kerning classes in all your masters, visit each master and use the “hamburger” menu of the Classes panel to Import Classes, picking the main master each time. Kerning classes are defined per master, but when instances or variable fonts are exported, classes from the main master are used (you can set the main master in Font Info > Masters using the blue radio button). Kerning classes in multiple-master or variable fonts » For example if the current pair is “TA”, tapping W will turn it into “AT”. Tap on W to swap positions of the two currently selected glyphs. A white “thumb” indicates that there is no kerning. A yellow bar and “thumb” indicate positive kerning. The new class kerning pair will appear in the Kerning panel:Ī green bar and “thumb” under the glyph pair indicate negative kerning.
Click on T, the second glyph, and then drag it closer or farther to the previous glyph in the string, or you can drag the “thumb” below the pair.Select the Kerning tool and open the Kerning panel ( Window > Panels > Kerning).Select the Text tool and type AT in the Glyph Window.Suppose your kerning classes are defined as followed: = Once you have created two kerning classes, one left and one right, you can begin class kerning. Once a kerning class is defined, this is what it will look like in the Classes panel: To rename the class, select it on the left, and enter a new name in the Name field in the local toolbar. If you are dragging-dropping glyphs from the Font Window, you can use the window’s Search field to find the glyphs you are looking for. To add glyphs to the class, enter glyph names to the text field under the Table area of the panel or select glyphs in the Font Window and press the + button under the Preview area or drag-drop glyphs from the Font Window to the Table area or List sidebar. The new class that appear will have a default name kl and the icon before its name if it is a 1st kerning class, and the name kr and the icon if it is a 2nd kerning class.
In scripts that are written from left-to-right, 1st kerning class is the on on the left. Here, choose whether you want to create a 1st or 2nd Kerning Class. Creating a kerning class »Ĭlick on the + button below the list of classes in the panel and the following dropdown will appear:
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Kerning values that involve classes are stored with the class, not with the “key glyph of the class” as they were in FontLab Studio 5.įor general information on kerning, see Kerning, for details on how to do class and regular kerning, see Editing Kerning, Classes panel for more information on classes and how to create them, and Kerning panel for the panel that displays all kerning pairs in the font. This means that if a member glyph of a kerning class is kerned with another glyph or class, FontLab assumes that you want to kern its entire parent class unless you specify otherwise. The classes used for kerning are called Kerning classes.įontLab allows you to kern between two glyphs, a glyph and a kerning class, a kerning class and a glyph, or between two kerning classes but class kerning has the highest priority. This approach to kerning is called Class Kerning and is defined in the glyph positioning (GPOS) feature kern. Such glyphs can be grouped together into classes, and kerning can be defined between classes, rather than between individual pairs.
Some glyphs can have the the same outer shape on one or both sides-such as the left side of letters C, G and O, or both sides of A, Ā, Á, Ä and Ã-and so they could share the same kerning values, when they are being kerned with other glyphs. Handling class kerning at font generation.Kerning classes in multiple-master or variable fonts.Making a Font From Color Vector Graphics.Detecting Element References or Composites.
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