| 1 | /*
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| 2 | * This module converts keysym values into the corresponding ISO 10646
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| 3 | * (UCS, Unicode) values.
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| 4 | *
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| 5 | * The array keysymtab[] contains pairs of X11 keysym values for graphical
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| 6 | * characters and the corresponding Unicode value. The function
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| 7 | * keysym2ucs() maps a keysym onto a Unicode value using a binary search,
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| 8 | * therefore keysymtab[] must remain SORTED by keysym value.
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| 9 | *
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| 10 | * The keysym -> UTF-8 conversion will hopefully one day be provided
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| 11 | * by Xlib via XmbLookupString() and should ideally not have to be
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| 12 | * done in X applications. But we are not there yet.
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| 13 | *
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| 14 | * We allow to represent any UCS character in the range U-00000000 to
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| 15 | * U-00FFFFFF by a keysym value in the range 0x01000000 to 0x01ffffff.
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| 16 | * This admittedly does not cover the entire 31-bit space of UCS, but
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| 17 | * it does cover all of the characters up to U-10FFFF, which can be
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| 18 | * represented by UTF-16, and more, and it is very unlikely that higher
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| 19 | * UCS codes will ever be assigned by ISO. So to get Unicode character
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| 20 | * U+ABCD you can directly use keysym 0x0100abcd.
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| 21 | *
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| 22 | * Author: Markus G. Kuhn <[email protected]>, University of Cambridge, April 2001
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| 23 | *
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| 24 | * Special thanks to Richard Verhoeven <[email protected]> for preparing
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| 25 | * an initial draft of the mapping table.
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| 26 | *
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| 27 | * This software is in the public domain. Share and enjoy!
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| 28 | */
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| 29 |
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| 30 | #ifndef KEYSYM2UCS_H
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| 31 | #define KEYSYM2UCS_H 1
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| 32 |
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| 33 | extern long keysym2ucs(int keysym);
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| 34 | extern int ucs2keysym(long ucs);
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| 35 |
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| 36 | #endif /* KEYSYM2UCS_H */
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