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| -rw-r--r-- | events_notdarwin.go | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/events_notdarwin.go b/events_notdarwin.go new file mode 100644 index 0000000..2b81216 --- /dev/null +++ b/events_notdarwin.go @@ -0,0 +1,72 @@ +// +build !darwin +// Mac OS X uses its own set of position-independent key codes + +// 29 march 2014 + +package ui + +/* +For position independence across international keyboard layouts, typewriter keys are read using scancodes (which are always set 1). +Windows provides the scancodes directly in the LPARAM. +GTK+ provides the scancodes directly from the underlying window system via GdkEventKey.hardware_keycode. +On X11, this is scancode + 8 (because X11 keyboard codes have a range of [8,255]). +Wayland is guaranteed to give the same result (thanks ebassi in irc.gimp.net/#gtk+). +On Linux, where evdev is used instead of polling scancodes directly from the keyboard, evdev's typewriter section key code constants are the same as scancodes anyway, so the rules above apply. +Typewriter section scancodes are the same across international keyboards with some exceptions that have been accounted for (see KeyEvent's documentation); see http://www.quadibloc.com/comp/scan.htm for details. +Non-typewriter keys can be handled safely using constants provided by the respective backend API. +*/ + +// use uintptr to be safe; the size of the scancode/hardware key code field on each platform is different +var scancodeMap = map[uintptr]byte{ + 0x02: '1', + 0x03: '2', + 0x04: '3', + 0x05: '4', + 0x06: '5', + 0x07: '6', + 0x08: '7', + 0x09: '8', + 0x0A: '9', + 0x0B: '0', + 0x0C: '-', + 0x0D: '=', + 0x0E: '\b', // seems to be safe on GTK+; TODO safe on windows? + 0x0F: '\t', // seems to be safe on GTK+; TODO safe on windows? + 0x10: 'q', + 0x11: 'w', + 0x12: 'e', + 0x13: 'r', + 0x14: 't', + 0x15: 'y', + 0x16: 'u', + 0x17: 'i', + 0x18: 'o', + 0x19: 'p', + 0x1A: '[', + 0x1B: ']', + 0x1C: '\n', // seems to be safe on GTK+; TODO safe on windows? + 0x1E: 'a', + 0x1F: 's', + 0x20: 'd', + 0x21: 'f', + 0x22: 'g', + 0x23: 'h', + 0x24: 'j', + 0x25: 'k', + 0x26: 'l', + 0x27: ';', + 0x28: '\'', + 0x29: '`', + 0x2B: '\\', + 0x2C: 'z', + 0x2D: 'x', + 0x2E: 'c', + 0x2F: 'v', + 0x30: 'b', + 0x31: 'n', + 0x32: 'm', + 0x33: ',', + 0x34: '.', + 0x35: '/', + 0x39: ' ', +} |