ref:44cca9a523d1a8f8657e53f7e24c8ae996adcc3a

fix(macos): preserve modifier state in input events (#5102)

SHA: 44cca9a523d1a8f8657e53f7e24c8ae996adcc3a
Author: martona <marton@anka.me>
Date: 2026-05-14 03:10
Parents: f9d1aca
1 files changed +17 -6
Type
src/platform/macos/input.cpp +17 −6
@@ -36,7 +36,6 @@
CGEventSourceRef source {};
// keyboard related stuff
CGEventRef kb_event {};
CGEventFlags kb_flags {};
// mouse related stuff
@@ -256,12 +255,19 @@
}
auto macos_input = ((macos_input_t *) input.get());
CGEventRef event = nullptr;
auto event = macos_input->kb_event;
if (key == kVK_Shift || key == kVK_RightShift ||
key == kVK_Command || key == kVK_RightCommand ||
key == kVK_Option || key == kVK_RightOption ||
key == kVK_Control || key == kVK_RightControl) {
event = CGEventCreate(macos_input->source);
if (!event) {
return;
}
CGEventSetIntegerValueField(event, kCGKeyboardEventKeycode, key);
CGEventFlags mask;
switch (key) {
@@ -285,13 +291,18 @@
macos_input->kb_flags = release ? macos_input->kb_flags & ~mask : macos_input->kb_flags | mask;
CGEventSetType(event, kCGEventFlagsChanged);
CGEventSetFlags(event, macos_input->kb_flags);
} else {
event = CGEventCreateKeyboardEvent(macos_input->source, key, !release);
CGEventSetIntegerValueField(event, kCGKeyboardEventKeycode, key);
if (!event) {
return;
}
CGEventSetType(event, release ? kCGEventKeyUp : kCGEventKeyDown);
}
CGEventSetFlags(event, macos_input->kb_flags);
CGEventPost(kCGHIDEventTap, event);
CFRelease(event);
}
void unicode(input_t &input, char *utf8, int size) {
@@ -358,6 +369,8 @@
CGEventSetDoubleValueField(event, kCGMouseEventDeltaX, deltaX);
CGEventSetDoubleValueField(event, kCGMouseEventDeltaY, deltaY);
// Inject modifier flags into mouse events so that shift+click and similar combinations work correctly.
CGEventSetFlags(event, macos_input->kb_flags);
CGEventPost(kCGHIDEventTap, event);
// For why this is here, see:
// https://stackoverflow.com/questions/15194409/simulated-mouseevent-not-working-properly-osx
@@ -555,7 +568,6 @@
macos_input->source = CGEventSourceCreate(kCGEventSourceStateHIDSystemState);
macos_input->kb_event = CGEventCreate(macos_input->source);
macos_input->kb_flags = 0;
macos_input->mouse_event = CGEventCreate(macos_input->source);
@@ -572,7 +584,6 @@
const auto *input = static_cast<macos_input_t *>(p);
CFRelease(input->source);
CFRelease(input->kb_event);
CFRelease(input->mouse_event);
delete input;