Font¶
Note
This section needs to contain the following:
- description of what this is ✓
- sub-object with basic usage ✓
- bridge to default layer for glyphs for backwards compatibility ✗
- glyph interaction with basic usage ✗
Description¶
The Font
object is the central part that connects all glyphs with font information like names, key dimensions etc.
Font
objects behave like dictionaries: the glyph name is the key and the returned value is a Glyph
object for that glyph. If the glyph does not exist, Font
will raise an IndexError
.
Font
has a couple of important sub-objects which are worth checking out. The font’s kerning is stored in a Kerning
object and can be reached as an attribute at Font.kerning
. Fontnames, key dimensions, flags etc are stored in a Info
object which is available through Font.info
. The Font.lib
is a Lib
object which behaves as a dictionary.
Overview¶
Copy¶
BaseFont.copy |
Copy the font into a new font. |
File Operations¶
BaseFont.path |
The path to the file this object represents. |
BaseFont.save |
Save the font to path. |
BaseFont.generate |
Generate the font to another format. |
Sub-Objects¶
BaseFont.info |
The font’s BaseInfo object. |
BaseFont.groups |
The font’s BaseGroups object. |
BaseFont.kerning |
The font’s BaseKerning object. |
BaseFont.features |
The font’s BaseFeatures object. |
BaseFont.lib |
The font’s BaseLib object. |
BaseFont.tempLib |
The font’s BaseLib object. |
Layers¶
BaseFont.layers |
The font’s BaseLayer objects. |
BaseFont.layerOrder |
A list of layer names indicating order of the layers in the font. |
BaseFont.defaultLayer |
The font’s default layer. |
BaseFont.getLayer |
Get the BaseLayer with name. |
BaseFont.newLayer |
Make a new layer with name and color. |
BaseFont.removeLayer |
Remove the layer with name from the font. |
BaseFont.insertLayer |
Insert layer into the font. |
Glyphs¶
BaseFont.__len__ |
An int representing number of glyphs in the layer. |
BaseFont.keys |
Get a list of all glyphs in the layer. |
BaseFont.glyphOrder |
The preferred order of the glyphs in the font. |
BaseFont.__iter__ |
Iterate through the BaseGlyph objects in the layer. |
BaseFont.__contains__ |
Test if the layer contains a glyph with name. |
BaseFont.__getitem__ |
Get the BaseGlyph with name from the layer. |
BaseFont.newGlyph |
Make a new glyph with name in the layer. |
BaseFont.insertGlyph |
Insert glyph into the layer. |
BaseFont.removeGlyph |
Remove the glyph with name from the layer. |
Reference¶
-
class
fontParts.base.
BaseFont
(pathOrObject=None, showInterface=True)[source]¶ A font object. This object is almost always created with one of the font functions in fontparts-world.
When constructing a font, the object can be created in a new file, from an existing file or from a native object. This is defined with the pathOrObjectArgument. If pathOrObject is a string, the string must represent an existing file. If pathOrObject is an instance of the environment’s unwrapped native font object, wrap it with FontParts. If pathOrObject is None, create a new, empty font. If showInterface is
False
, the font should be created without graphical interface. The default for showInterface isTrue
.
Copy¶
File Operations¶
-
BaseFont.
path
¶ The path to the file this object represents.
>>> print font.path "/path/to/my/font.ufo"
-
BaseFont.
save
(path=None, showProgress=False, formatVersion=None, fileStructure=None)[source]¶ Save the font to path.
>>> font.save() >>> font.save("/path/to/my/font-2.ufo")
If path is None, use the font’s original location. The file type must be inferred from the file extension of the given path. If no file extension is given, the environment may fall back to the format of its choice. showProgress indicates if a progress indicator should be displayed during the operation. Environments may or may not implement this behavior. formatVersion indicates the format version that should be used for writing the given file type. For example, if 2 is given for formatVersion and the file type being written if UFO, the file is to be written in UFO 2 format. This value is not limited to UFO format versions. If no format version is given, the original format version of the file should be preserved. If there is no original format version it is implied that the format version is the latest version for the file type as supported by the environment. fileStructure indicates the file structure of the written ufo. The fileStructure can either be None, ‘zip’ or ‘package’, None will use the existing file strucure or the default one for unsaved font. ‘package’ is the default file structure and ‘zip’ will save the font to .ufoz.
Note
Environments may define their own rules governing when a file should be saved into its original location and when it should not. For example, a font opened from a compiled OpenType font may not be written back into the original OpenType font.
-
BaseFont.
close
(save=False)[source]¶ Close the font.
>>> font.close()
save is a boolean indicating if the font should be saved prior to closing. If save is
True
, theBaseFont.save
method will be called. The default isFalse
.
-
BaseFont.
generate
(format, path=None, **environmentOptions)[source]¶ Generate the font to another format.
>>> font.generate("otfcff") >>> font.generate("otfcff", "/path/to/my/font.otf")
format defines the file format to output. Standard format identifiers can be found in
BaseFont.generateFormatToExtension
:Environments are not required to support all of these and environments may define their own format types. path defines the location where the new file should be created. If a file already exists at that location, it will be overwritten by the new file. If path defines a directory, the file will be output as the current file name, with the appropriate suffix for the format, into the given directory. If no path is given, the file will be output into the same directory as the source font with the file named with the current file name, with the appropriate suffix for the format.
Environments may allow unique keyword arguments in this method. For example, if a tool allows decomposing components during a generate routine it may allow this:
>>> font.generate("otfcff", "/p/f.otf", decompose=True)
Sub-Objects¶
-
BaseFont.
groups
¶ The font’s
BaseGroups
object.>>> font.groups["myGroup"] ["A", "B", "C"]
-
BaseFont.
kerning
¶ The font’s
BaseKerning
object.>>> font.kerning["A", "B"] -100
-
BaseFont.
features
¶ The font’s
BaseFeatures
object.>>> font.features.text "include(features/substitutions.fea);"
Layers¶
-
BaseFont.
layers
¶ The font’s
BaseLayer
objects.>>> for layer in font.layers: ... layer.name "My Layer 1" "My Layer 2"
-
BaseFont.
layerOrder
¶ A list of layer names indicating order of the layers in the font.
>>> font.layerOrder = ["My Layer 2", "My Layer 1"] >>> font.layerOrder ["My Layer 2", "My Layer 1"]
-
BaseFont.
defaultLayer
¶ The font’s default layer.
>>> layer = font.defaultLayer >>> font.defaultLayer = otherLayer
-
BaseFont.
getLayer
(name)[source]¶ Get the
BaseLayer
with name.>>> layer = font.getLayer("My Layer 2")
-
BaseFont.
newLayer
(name, color=None)[source]¶ Make a new layer with name and color. name must be a String and color must be a Color or
None
.>>> layer = font.newLayer("My Layer 3")
The will return the newly created
BaseLayer
.
-
BaseFont.
removeLayer
(name)[source]¶ Remove the layer with name from the font.
>>> font.removeLayer("My Layer 3")
-
BaseFont.
insertLayer
(layer, name=None)[source]¶ Insert layer into the font.
>>> layer = font.insertLayer(otherLayer, name="layer 2")
This will not insert the layer directly. Rather, a new layer will be created and the data from layer will be copied to to the new layer. name indicates the name that should be assigned to the layer after insertion. If name is not given, the layer’s original name must be used. If the layer does not have a name, an error must be raised. The data that will be inserted from layer is the same data as documented in
BaseLayer.copy
.
Glyphs¶
Interacting with glyphs at the font level is a shortcut for interacting with glyphs in the default layer.
>>> glyph = font.newGlyph("A")
Does the same thing as:
>>> glyph = font.getLayer(font.defaultLayerName).newGlyph("A")
-
BaseFont.
__len__
()¶ An
int
representing number of glyphs in the layer.>>> len(layer) 256
-
BaseFont.
keys
()¶ Get a list of all glyphs in the layer.
>>> layer.keys() ["B", "C", "A"]
The order of the glyphs is undefined.
-
BaseFont.
glyphOrder
¶ The preferred order of the glyphs in the font.
>>> font.glyphOrder ["C", "B", "A"] >>> font.glyphOrder = ["A", "B", "C"]
-
BaseFont.
__iter__
()¶ Iterate through the
BaseGlyph
objects in the layer.>>> for glyph in layer: ... glyph.name "A" "B" "C"
-
BaseFont.
__contains__
(name)¶ Test if the layer contains a glyph with name.
>>> "A" in layer True
-
BaseFont.
newGlyph
(name, clear=True)¶ Make a new glyph with name in the layer.
>>> glyph = layer.newGlyph("A")
The newly created
BaseGlyph
will be returned.If the glyph exists in the layer and clear is set to
False
, the existing glyph will be returned, otherwise the default behavior is to clear the exisiting glyph.
-
BaseFont.
insertGlyph
(glyph, name=None)¶ Insert glyph into the layer.
>>> glyph = layer.insertGlyph(otherGlyph, name="A")
This method is deprecated.
BaseFont.__setitem__
instead.
-
BaseFont.
removeGlyph
(name)¶ Remove the glyph with name from the layer.
>>> layer.removeGlyph("A")
This method is deprecated.
BaseFont.__delitem__
instead.
Guidelines¶
-
BaseFont.
guidelines
¶ An Immutable List of font-level
BaseGuideline
objects.>>> for guideline in font.guidelines: ... guideline.angle 0 45 90
-
BaseFont.
appendGuideline
(position=None, angle=None, name=None, color=None, guideline=None)[source]¶ Append a new guideline to the font.
>>> guideline = font.appendGuideline((50, 0), 90) >>> guideline = font.appendGuideline((0, 540), 0, name="overshoot", >>> color=(0, 0, 0, 0.2))
position must be a Coordinate indicating the position of the guideline. angle indicates the Angle of the guideline. name indicates the name for the guideline. This must be a String or
None
. color indicates the color for the guideline. This must be a Color orNone
. This will return the newly createdBaseGuidline
object.guideline
may be aBaseGuideline
object from which attribute values will be copied. Ifposition
,angle
,name
orcolor
are specified as arguments, those values will be used instead of the values in the given guideline object.
Interpolation¶
-
BaseFont.
isCompatible
(other)[source]¶ Evaluate interpolation compatibility with other.
>>> compatible, report = self.isCompatible(otherFont) >>> compatible False >>> report [Fatal] Glyph: "test1" + "test2" [Fatal] Glyph: "test1" contains 1 contours | "test2" contains 2 contours
This will return a
bool
indicating if the font is compatible for interpolation with other and a String of compatibility notes.
-
BaseFont.
interpolate
(factor, minFont, maxFont, round=True, suppressError=True)[source]¶ Interpolate all possible data in the font.
>>> font.interpolate(0.5, otherFont1, otherFont2) >>> font.interpolate((0.5, 2.0), otherFont1, otherFont2, round=False)
The interpolation occurs on a 0 to 1.0 range where minFont is located at 0 and maxFont is located at 1.0. factor is the interpolation value. It may be less than 0 and greater than 1.0. It may be a Integer/Float or a tuple of two Integer/Float. If it is a tuple, the first number indicates the x factor and the second number indicates the y factor. round indicates if the result should be rounded to integers. suppressError indicates if incompatible data should be ignored or if an error should be raised when such incompatibilities are found.
Normalization¶
Environment¶
-
BaseFont.
naked
()¶ Return the environment’s native object that has been wrapped by this object.
>>> loweLevelObj = obj.naked()
-
BaseFont.
changed
(*args, **kwargs)¶ Tell the environment that something has changed in the object. The behavior of this method will vary from environment to environment.
>>> obj.changed()