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modify keys state 2 depends on some scenarios

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Trying to port xterms logic...
This commit is contained in:
Mitchell Hashimoto
2023-08-14 21:07:08 -07:00
parent 28ff9118b0
commit 2e54a825bf
1 changed files with 40 additions and 16 deletions
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26
src/Surface.zig
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@ -1037,7 +1037,30 @@ pub fn charCallback(
// for any char with a modifier. Ctrl sequences like Ctrl+A
// are handled in keyCallback and should never have reached this
// point.
if (critical.modify_other_keys and !mods.empty()) {
if (critical.modify_other_keys) {
// This copies xterm's `ModifyOtherKeys` function that returns
// whether modify other keys should be encoded for the given
// input.
const should_modify = should_modify: {
// xterm IsControlInput
if (codepoint >= 0x40 and codepoint <= 0x7F)
break :should_modify true;
// If we have anything other than shift pressed, encode.
var mods_no_shift = mods;
mods_no_shift.shift = false;
if (!mods_no_shift.empty()) break :should_modify true;
// We only have shift pressed. We only allow space.
if (codepoint == ' ') break :should_modify true;
// This logic isn't complete but I don't fully understand
// the rest so I'm going to wait until we can have a
// reasonable test scenario.
break :should_modify false;
};
if (should_modify) {
for (input.function_keys.modifiers, 2..) |modset, code| {
if (!mods.equal(modset)) continue;
@ -1056,6 +1079,7 @@ pub fn charCallback(
return;
}
}
}
// Prefix our data with ESC if we have alt pressed.
var i: u8 = 0;