Hello,
I am trying to extend the Applidium port of vim to iOS.
Specifically, I'm trying to add support of external keyboards (the iPad is
great, but it's even more useful with an external keyboard. Especially, since
it's vim, one with an "Esc" key).
I have code for catching keyboard events, and I can identify them (I know if
Control has been pressed, or Alt, and with which keys). I also identify the
special keys, such as up, down…
I think I've found the way to pass the events to vim. For function keys, cursor
keys, all is fine.
I'm having trouble with control + key (and alt + key). Here's my code:
// Identify the modifiers (Shift, Ctrl, Alt, Option)
UInt32 vimModifiers = EventFlags2VimModifiers(eventFlags);
// Are we on a special key?
int isSpecial = 0;
int i;
int key_char;
for (i = 0; special_keys[i].key_sym != (KeySym)0; ++i)
if (special_keys[i].key_sym == keycode[0])
{
key_char = TO_SPECIAL(special_keys[i].vim_code0,
special_keys[i].vim_code1);
key_char = simplify_key(key_char, (int *)&vimModifiers);
isSpecial = TRUE;
break;
}
if (vimModifiers)
{
// We place the modifiers in the buffer
result[len++] = CSI;
result[len++] = KS_MODIFIER;
result[len++] = vimModifiers;
}
if (isSpecial && IS_SPECIAL(key_char))
{
result[len++] = CSI;
result[len++] = K_SECOND(key_char);
result[len++] = K_THIRD(key_char);
} else if (vimModifiers) {
result[len++] = keycode[0] + 0x5d; // convert key code to letter
result[len++] = 0;
}
if (len > 0) {
add_to_input_buf(result, len);
}
When I type control + A, I get the standard behavior for control + A (insert
previously inserted text) *plus* the letter a, appended at the end.
(same for all letters, so for example control + V ends up as only "visual", not
"visual block")
And I can't figure why. My first guess is that there is something wrong in the
way I handle modified letters, but I couldn't find any documentation as to how
to do it (I got this far by looking at the code for other platforms).
Could you point me towards the right documentation?
N Holzschuch
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