stone/backends/x/unicode.go

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package x
import "github.com/jezek/xgb/xproto"
import "git.tebibyte.media/sashakoshka/stone"
// when making changes to this file, look at keysymdef.h
var buttonCodeTable = map[xproto.Keysym] stone.Button {
0xFFFFFF: stone.ButtonUnknown,
0xFF63: stone.KeyInsert,
0xFF67: stone.KeyMenu,
0xFF61: stone.KeyPrintScreen,
0xFF6B: stone.KeyPause,
0xFFE5: stone.KeyCapsLock,
0xFF14: stone.KeyScrollLock,
0xFF7F: stone.KeyNumLock,
0xFF08: stone.KeyBackspace,
0xFF09: stone.KeyTab,
0xFF0A: stone.KeyEnter,
0xFF1B: stone.KeyEscape,
0xFF52: stone.KeyUp,
0xFF54: stone.KeyDown,
0xFF51: stone.KeyLeft,
0xFF53: stone.KeyRight,
0xFF55: stone.KeyPageUp,
0xFF56: stone.KeyPageDown,
0xFF50: stone.KeyHome,
0xFF57: stone.KeyEnd,
0xFFE1: stone.KeyLeftShift,
0xFFE2: stone.KeyRightShift,
0xFFE3: stone.KeyLeftControl,
0xFFE4: stone.KeyRightControl,
0xFFE9: stone.KeyLeftAlt,
0xFFEA: stone.KeyRightAlt,
0xFFEB: stone.KeyLeftSuper,
0xFFEC: stone.KeyRightSuper,
0xFFFF: stone.KeyDelete,
0xFFBE: stone.KeyF1,
0xFFBF: stone.KeyF2,
0xFFC0: stone.KeyF3,
0xFFC1: stone.KeyF4,
0xFFC2: stone.KeyF5,
0xFFC3: stone.KeyF6,
0xFFC4: stone.KeyF7,
0xFFC5: stone.KeyF8,
0xFFC6: stone.KeyF9,
0xFFC7: stone.KeyF10,
0xFFC8: stone.KeyF11,
0xFFC9: stone.KeyF12,
}
func keysymToButtonCode (keysym xproto.Keysym) (button stone.Button) {
var isControl bool
button, isControl = buttonCodeTable[keysym]
if isControl { return }
// some X keysyms have a single bit set to 1 here. i believe this is to
// prevent conflicts with existing codes. if we mask it off we will get
// a correct utf-32 code point.
if keysym & 0xF000000 == 0x1000000 {
button = stone.Button(keysym & 0x0111111)
return
}
// X keysyms like 0xFF.. or 0xFE.. are non-character keys. we already
// resolve these by looking them up in the button code table, so if any
// that we don't support pop up we should just silence them as it is
// effectively garbage data as far as stone applications are concerned.
if (keysym >> 8) == 0xFF || (keysym >> 8) == 0xFE {
button = stone.ButtonUnknown
return
}
// if none of these things happened, we can safely (i think) assume that
// the keysym is an exact utf-32 code point.
button = stone.Button(keysym)
return
}