//go:build linux
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package hotkey
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/*
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#cgo LDFLAGS: -lX11
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#include <X11/Xlib.h>
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#include <X11/keysym.h>
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#include <string.h>
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static Display* getDisplay() {
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static Display* dpy = NULL;
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if (dpy == NULL) {
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dpy = XOpenDisplay(NULL);
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}
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return dpy;
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}
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int queryKeyState(int keycode) {
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Display* dpy = getDisplay();
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if (dpy == NULL) return 0;
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char keys[32];
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XQueryKeymap(dpy, keys);
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return (keys[keycode / 8] >> (keycode % 8)) & 1;
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}
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int keysymToKeycode(unsigned long keysym) {
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Display* dpy = getDisplay();
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if (dpy == NULL) return 0;
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return XKeysymToKeycode(dpy, keysym);
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}
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*/
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import "C"
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import "time"
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// Windows VK to X11 KeySym mapping
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var vkToKeySym = map[int]C.ulong{
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0x11: C.ulong(0xFFE3), // Ctrl -> XK_Control_L
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0xA2: C.ulong(0xFFE3), // L-Ctrl -> XK_Control_L
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0xA3: C.ulong(0xFFE4), // R-Ctrl -> XK_Control_R
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0x12: C.ulong(0xFFE9), // Alt -> XK_Alt_L
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0xA4: C.ulong(0xFFE9), // L-Alt -> XK_Alt_L
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0xA5: C.ulong(0xFFEA), // R-Alt -> XK_Alt_R
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0x10: C.ulong(0xFFE1), // Shift -> XK_Shift_L
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0xA0: C.ulong(0xFFE1), // L-Shift -> XK_Shift_L
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0xA1: C.ulong(0xFFE2), // R-Shift -> XK_Shift_R
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0x14: C.ulong(0xFFE5), // Caps Lock -> XK_Caps_Lock
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0x20: C.ulong(0x0020), // Space -> XK_space
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0x09: C.ulong(0xFF09), // Tab -> XK_Tab
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0x0D: C.ulong(0xFF0D), // Enter -> XK_Return
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0x1B: C.ulong(0xFF1B), // Esc -> XK_Escape
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}
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type linuxListener struct{}
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func newPlatformListener() Listener {
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return &linuxListener{}
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}
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func (l *linuxListener) IsKeyDown(vk int) bool {
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keySym, ok := vkToKeySym[vk]
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if !ok {
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// A-Z
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if vk >= 0x41 && vk <= 0x5A {
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keySym = C.ulong(vk) // ASCII == X11 keysym for A-Z lowercase
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} else {
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return false
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}
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}
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keycode := C.keysymToKeycode(keySym)
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return C.queryKeyState(keycode) != 0
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}
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func (l *linuxListener) IsAnyOtherKeyPressed(excludeVK int) bool {
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modifiers := []int{0x11, 0xA2, 0xA3, 0x12, 0xA4, 0xA5, 0x10, 0xA0, 0xA1}
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for _, k := range modifiers {
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if k == excludeVK {
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continue
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}
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if l.IsKeyDown(k) {
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return true
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}
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}
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for vk := 0x41; vk <= 0x5A; vk++ {
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if vk == excludeVK {
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continue
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}
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if l.IsKeyDown(vk) {
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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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func (l *linuxListener) IsAnyOtherKeyPressedSince(excludeVK int, since time.Time) bool {
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return l.IsAnyOtherKeyPressed(excludeVK)
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}
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func (l *linuxListener) Close() {}
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