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Fix scroll mods for precise trackpad input

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This commit is contained in:
Lawrence Chen 2026-01-23 18:17:11 -08:00
parent 73e42553c8
commit 00eda7f32b
1 changed files with 32 additions and 6 deletions
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38
Sources/GhosttyTerminalView.swift
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@ -1359,16 +1359,42 @@ class GhosttyNSView: NSView, NSUserInterfaceValidations {
override func scrollWheel(with event: NSEvent) {
guard let surface = surface else { return }
terminalSurface?.setFocus(true)
var x = event.scrollingDeltaX
var y = event.scrollingDeltaY
let precision = event.hasPreciseScrollingDeltas
if precision {
x *= 2
y *= 2
}
var mods: Int32 = 0
if event.modifierFlags.contains(.shift) { mods |= Int32(GHOSTTY_MODS_SHIFT.rawValue) }
if event.modifierFlags.contains(.control) { mods |= Int32(GHOSTTY_MODS_CTRL.rawValue) }
if event.modifierFlags.contains(.option) { mods |= Int32(GHOSTTY_MODS_ALT.rawValue) }
if event.modifierFlags.contains(.command) { mods |= Int32(GHOSTTY_MODS_SUPER.rawValue) }
if precision {
mods |= 0b0000_0001
}
let momentum: Int32
switch event.momentumPhase {
case .began:
momentum = Int32(GHOSTTY_MOUSE_MOMENTUM_BEGAN.rawValue)
case .stationary:
momentum = Int32(GHOSTTY_MOUSE_MOMENTUM_STATIONARY.rawValue)
case .changed:
momentum = Int32(GHOSTTY_MOUSE_MOMENTUM_CHANGED.rawValue)
case .ended:
momentum = Int32(GHOSTTY_MOUSE_MOMENTUM_ENDED.rawValue)
case .cancelled:
momentum = Int32(GHOSTTY_MOUSE_MOMENTUM_CANCELLED.rawValue)
case .mayBegin:
momentum = Int32(GHOSTTY_MOUSE_MOMENTUM_MAY_BEGIN.rawValue)
default:
momentum = Int32(GHOSTTY_MOUSE_MOMENTUM_NONE.rawValue)
}
mods |= momentum << 1
ghostty_surface_mouse_scroll(
surface,
event.scrollingDeltaX,
event.scrollingDeltaY,
x,
y,
ghostty_input_scroll_mods_t(mods)
)
}