//go:build windows
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package hotkey
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import (
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"syscall"
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"time"
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"unsafe"
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)
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var (
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user32 = syscall.NewLazyDLL("user32.dll")
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procGetAsyncKeyState = user32.NewProc("GetAsyncKeyState")
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)
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type windowsListener struct{}
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func newPlatformListener() Listener {
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return &windowsListener{}
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}
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func getAsyncKeyState(vk int) uint16 {
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ret, _, _ := procGetAsyncKeyState.Call(uintptr(vk))
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return uint16(ret)
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}
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func (l *windowsListener) IsKeyDown(vk int) bool {
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return getAsyncKeyState(vk)&0x8000 != 0
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}
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func (l *windowsListener) IsAnyOtherKeyPressed(excludeVK int) bool {
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// Check meaningful keys: A-Z, 0-9, function keys, common keys
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checkKeys := []int{
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0x08, 0x09, 0x0D, 0x1B, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x2C, 0x2D, 0x2E,
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}
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// 0-9
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for i := 0x30; i <= 0x39; i++ {
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checkKeys = append(checkKeys, i)
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}
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// A-Z
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for i := 0x41; i <= 0x5A; i++ {
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checkKeys = append(checkKeys, i)
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}
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// F1-F12
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for i := 0x70; i <= 0x7B; i++ {
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checkKeys = append(checkKeys, i)
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}
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// OEM keys
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checkKeys = append(checkKeys, 0xBA, 0xBB, 0xBC, 0xBD, 0xBE, 0xBF, 0xC0, 0xDB, 0xDC, 0xDD, 0xDE)
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for _, k := range checkKeys {
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if k == excludeVK {
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continue
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}
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if getAsyncKeyState(k)&0x8000 != 0 {
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return true
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}
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}
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// Check modifier keys not matching the exclude key
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ctrlKeys := []int{0x11, 0xA2, 0xA3}
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altKeys := []int{0x12, 0xA4, 0xA5}
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shiftKeys := []int{0x10, 0xA0, 0xA1}
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if !contains(ctrlKeys, excludeVK) {
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for _, k := range ctrlKeys {
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if getAsyncKeyState(k)&0x8000 != 0 {
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return true
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}
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}
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}
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if !contains(altKeys, excludeVK) {
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for _, k := range altKeys {
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if getAsyncKeyState(k)&0x8000 != 0 {
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return true
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}
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}
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}
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if !contains(shiftKeys, excludeVK) {
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for _, k := range shiftKeys {
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if getAsyncKeyState(k)&0x8000 != 0 {
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return true
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}
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}
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}
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return false
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}
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func (l *windowsListener) IsAnyOtherKeyPressedSince(excludeVK int, since time.Time) bool {
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return l.IsAnyOtherKeyPressed(excludeVK)
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}
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func contains(slice []int, val int) bool {
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for _, v := range slice {
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if v == val {
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return true
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}
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}
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return false
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}
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// Ensure unsafe is used (needed for syscall alignment)
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var _ = unsafe.Sizeof(0)
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