Keyboard Support

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Keyboard Properties

Most keyboards are generated automatically from the Keyman keyboard source by Keyman Developer and contain properties used by KeymanWeb during keyboard mapping. Keyboards implement mapping by invoking functions within KeymanWeb, but do not interact directly with the user interface. However, user interfaces may need to interact with custom developed keyboards if, for example, they use a "pick list" or have other IME-like behavior.

Each registered keyboard object defines some or all of the following exposed string properties:

  • KN
    string, (name) visible name of the keyboard, required.
  • KI
    string, (internalName) identifier of the keyboard, starting with Keyboard_, required.
    string, minimum version that the keyboard will run on, 2.0 if not present, optional.
  • KV
    object, on screen keyboard definition, optional.
  • KDU
    number, 1 to display underlying characters on On Screen Keyboard, 0 or omitted to hide them, optional
  • KH
    string, Keyboard help, in HTML; if present replaces KV in the On Screen Keyboard, optional
  • KM
    number, 1 to use mnemonic layout, 0 or omitted for positional, optional
    string, version of the keyboard (should be dotted decimal format), optional
  • KMBM
    number, bitmask denoting modifiers used in the keyboard, if not present defaults to 0x0070, optional
  • KVKL
    object, touch layout definition, optional.
  • KVER
    string, version of Keyman Developer used to compile the keyboard, optional
  • KVS
    string[], array of all variable store names found in the keyboard (15.0 and later), optional
  • KS
    number, 1 means Unicode characters U+10000-U+10FFFF, including the Supplementary Multilingual Plane (SMP), are used in the keyboard, optional
  • KVKD
    object, Virtual key dictionary listing custom touch keys used in the keyboard, optional
  • KCSS
    string, Custom CSS defined by the keyboard, optional
  • KFont
    object, Embedded font specification for mapped input elements and on-screen keyboard, optional
  • KOskFont
    object, Embedded font specification for on-screen keyboard, optional

For most keyboards which require an embedded font, the same font will be used for mapped elements and the on-screen keyboard, and only the KFont property wil be defined. The additional property KOskFont property would only be used where it may be helpful to use a different embedded font for the on-screen keyboard.

The KFont and KOskFont members are objects with the following members:

  • family
    string, font-family name for embedded font, e.g. 'LatinWeb'
  • files
    string or string[], Font file name or names, e.g. ['DejaVuSans.ttf','DejaVuSans.woff','DejaVuSans.eot']