From 073a1e3e5af78fb0d220169009fd6a0939b432d2 Mon Sep 17 00:00:00 2001
From: Yuqian Yang <crupest@crupest.life>
Date: Sun, 12 Oct 2025 00:06:53 +0800
Subject: Extract ConvertModifiersOfEvent.

---
 src/platform/gui/xcb/Keyboard.cpp | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'src/platform/gui/xcb/Keyboard.cpp')

diff --git a/src/platform/gui/xcb/Keyboard.cpp b/src/platform/gui/xcb/Keyboard.cpp
index 2e02bcd1..4bfc448c 100644
--- a/src/platform/gui/xcb/Keyboard.cpp
+++ b/src/platform/gui/xcb/Keyboard.cpp
@@ -195,6 +195,27 @@ KeyModifier GetCurrentKeyModifiers(XcbUiApplication *application) {
   return result;
 }
 
+KeyModifier ConvertModifiersOfEvent(uint32_t mask) {
+  // const char *MODIFIERS[] = {
+  //     "Shift", "Lock",    "Ctrl",    "Alt",     "Mod2",    "Mod3",   "Mod4",
+  //     "Mod5",  "Button1", "Button2", "Button3", "Button4", "Button5"};
+  constexpr KeyModifier MODIFIERS[] = {
+      KeyModifiers::Shift, KeyModifiers::none, KeyModifiers::Ctrl,
+      KeyModifiers::Alt,   KeyModifiers::none, KeyModifiers::none,
+      KeyModifiers::none,  KeyModifiers::none, KeyModifiers::none,
+      KeyModifiers::none,  KeyModifiers::none, KeyModifiers::none,
+      KeyModifiers::none,
+  };
+
+  KeyModifier result;
+  for (auto iter = std::begin(MODIFIERS); mask; mask >>= 1, ++iter) {
+    if (mask & 1) {
+      result |= *iter;
+    }
+  }
+  return result;
+}
+
 XcbKeyboardManager::XcbKeyboardManager(XcbUiApplication *application)
     : application_(application) {
   xkb_x11_setup_xkb_extension(
-- 
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