1 files changed, 174 insertions, 0 deletions
diff --git a/src/lib/barrier/IKeyState.h b/src/lib/barrier/IKeyState.h
new file mode 100644
index 0000000..b9d4706
--- /dev/null
+++ b/src/lib/barrier/IKeyState.h
@@ -0,0 +1,174 @@
+/*
+ * barrier -- mouse and keyboard sharing utility
+ * Copyright (C) 2012-2016 Symless Ltd.
+ * Copyright (C) 2003 Chris Schoeneman
+ * 
+ * This package is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * found in the file LICENSE that should have accompanied this file.
+ * 
+ * This package is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "barrier/key_types.h"
+#include "base/Event.h"
+#include "base/String.h"
+#include "base/IEventQueue.h"
+#include "base/EventTypes.h"
+#include "common/stdset.h"
+#include "common/IInterface.h"
+
+//! Key state interface
+/*!
+This interface provides access to set and query the keyboard state and
+to synthesize key events.
+*/
+class IKeyState : public IInterface {
+public:
+    IKeyState(IEventQueue* events);
+
+    enum {
+        kNumButtons = 0x200
+    };
+
+    //! Key event data
+    class KeyInfo {
+    public:
+        static KeyInfo* alloc(KeyID, KeyModifierMask, KeyButton, SInt32 count);
+        static KeyInfo* alloc(KeyID, KeyModifierMask, KeyButton, SInt32 count,
+                            const std::set<String>& destinations);
+        static KeyInfo* alloc(const KeyInfo&);
+
+        static bool isDefault(const char* screens);
+        static bool contains(const char* screens, const String& name);
+        static bool equal(const KeyInfo*, const KeyInfo*);
+        static String join(const std::set<String>& destinations);
+        static void split(const char* screens, std::set<String>&);
+
+    public:
+        KeyID            m_key;
+        KeyModifierMask    m_mask;
+        KeyButton        m_button;
+        SInt32            m_count;
+        char*            m_screens;
+        char            m_screensBuffer[1];
+    };
+
+    typedef std::set<KeyButton> KeyButtonSet;
+
+    //! @name manipulators
+    //@{
+
+    //! Update the keyboard map
+    /*!
+    Causes the key state to get updated to reflect the current keyboard
+    mapping.
+    */
+    virtual void        updateKeyMap() = 0;
+
+    //! Update the key state
+    /*!
+    Causes the key state to get updated to reflect the physical keyboard
+    state.
+    */
+    virtual void        updateKeyState() = 0;
+
+    //! Set half-duplex mask
+    /*!
+    Sets which modifier toggle keys are half-duplex.  A half-duplex
+    toggle key doesn't report a key release when toggled on and
+    doesn't report a key press when toggled off.
+    */
+    virtual void        setHalfDuplexMask(KeyModifierMask) = 0;
+
+    //! Fake a key press
+    /*!
+    Synthesizes a key press event and updates the key state.
+    */
+    virtual void        fakeKeyDown(KeyID id, KeyModifierMask mask,
+                            KeyButton button) = 0;
+
+    //! Fake a key repeat
+    /*!
+    Synthesizes a key repeat event and updates the key state.
+    */
+    virtual bool        fakeKeyRepeat(KeyID id, KeyModifierMask mask,
+                            SInt32 count, KeyButton button) = 0;
+
+    //! Fake a key release
+    /*!
+    Synthesizes a key release event and updates the key state.
+    */
+    virtual bool        fakeKeyUp(KeyButton button) = 0;
+
+    //! Fake key releases for all fake pressed keys
+    /*!
+    Synthesizes a key release event for every key that is synthetically
+    pressed and updates the key state.
+    */
+    virtual void        fakeAllKeysUp() = 0;
+
+    //! Fake ctrl+alt+del
+    /*!
+    Synthesize a press of ctrl+alt+del.  Return true if processing is
+    complete and false if normal key processing should continue.
+    */
+    virtual bool        fakeCtrlAltDel() = 0;
+    
+    //! Fake a media key
+    /*!
+     Synthesizes a media key down and up. Only Mac would implement this by
+     use cocoa appkit framework.
+     */
+    virtual bool        fakeMediaKey(KeyID id) = 0;
+    
+    //@}
+    //! @name accessors
+    //@{
+
+    //! Test if key is pressed
+    /*!
+    Returns true iff the given key is down.  Half-duplex toggles
+    always return false.
+    */
+    virtual bool        isKeyDown(KeyButton) const = 0;
+
+    //! Get the active modifiers
+    /*!
+    Returns the modifiers that are currently active according to our
+    shadowed state.
+    */
+    virtual KeyModifierMask
+                        getActiveModifiers() const = 0;
+
+    //! Get the active modifiers from OS
+    /*!
+    Returns the modifiers that are currently active according to the
+    operating system.
+    */
+    virtual KeyModifierMask
+                        pollActiveModifiers() const = 0;
+
+    //! Get the active keyboard layout from OS
+    /*!
+    Returns the active keyboard layout according to the operating system.
+    */
+    virtual SInt32        pollActiveGroup() const = 0;
+
+    //! Get the keys currently pressed from OS
+    /*!
+    Adds any keys that are currently pressed according to the operating
+    system to \p pressedKeys.
+    */
+    virtual void        pollPressedKeys(KeyButtonSet& pressedKeys) const = 0;
+
+    //@}
+};