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-rw-r--r--widget/windows/WinModifierKeyState.h59
1 files changed, 59 insertions, 0 deletions
diff --git a/widget/windows/WinModifierKeyState.h b/widget/windows/WinModifierKeyState.h
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+++ b/widget/windows/WinModifierKeyState.h
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_widget_WinModifierKeyState_h_
+#define mozilla_widget_WinModifierKeyState_h_
+
+#include "mozilla/RefPtr.h"
+#include "mozilla/EventForwards.h"
+#include "nsStringFwd.h"
+#include <windows.h>
+
+namespace mozilla {
+namespace widget {
+
+class MOZ_STACK_CLASS ModifierKeyState final {
+ public:
+ ModifierKeyState();
+ explicit ModifierKeyState(Modifiers aModifiers);
+
+ void Update();
+
+ void Unset(Modifiers aRemovingModifiers);
+ void Set(Modifiers aAddingModifiers);
+
+ void InitInputEvent(WidgetInputEvent& aInputEvent) const;
+
+ // Do not create IsAltGr() because it's unclear whether:
+ // - AltGr key is actually pressed.
+ // - Both Ctrl and Alt keys are pressed when a keyboard layout which
+ // has AltGr key.
+ // - Both Ctrl and Alt keys are pressed when a keyboard layout which
+ // does not have AltGr key.
+ bool IsShift() const;
+ bool IsControl() const;
+ bool IsAlt() const;
+ bool IsWin() const;
+
+ bool MaybeMatchShortcutKey() const;
+
+ bool IsCapsLocked() const;
+ bool IsNumLocked() const;
+ bool IsScrollLocked() const;
+
+ MOZ_ALWAYS_INLINE Modifiers GetModifiers() const { return mModifiers; }
+
+ private:
+ Modifiers mModifiers;
+
+ void InitMouseEvent(WidgetInputEvent& aMouseEvent) const;
+};
+
+const nsCString ToString(const ModifierKeyState& aModifierKeyState);
+
+} // namespace widget
+} // namespace mozilla
+
+#endif // #ifndef mozilla_widget_WinModifierKeyState_h_