internal static Key VkToKey(VK vk, SC sc, LLKHF flags, bool has_shift,
bool has_altgr, bool has_capslock)
{
byte[] keystate = new byte[256];
NativeMethods.GetKeyboardState(keystate);
keystate[(int)VK.SHIFT] = (byte)(has_shift ? 0x80 : 0x00);
keystate[(int)VK.CONTROL] = (byte)(has_altgr ? 0x80 : 0x00);
keystate[(int)VK.MENU] = (byte)(has_altgr ? 0x80 : 0x00);
keystate[(int)VK.CAPITAL] = (byte)(has_capslock ? 0x01 : 0x00);
// These two calls must be done together and in this order.
string str_if_normal = VkToUnicode(vk, sc, keystate, flags);
string str_if_dead = VkToUnicode(VK.SPACE);
// This indicates that vk was a dead key
if (str_if_dead != "" && str_if_dead != " ")
{
return(new Key(str_if_dead));
}
// Special case: we don't consider characters such as Esc as printable
// otherwise they are not properly serialised in the config file.
if (str_if_normal == "" || str_if_normal[0] < ' ')
{
return(new Key(vk));
}
return(new Key(str_if_normal));
}
private static string KeyToUnicode(VK vk, SC sc, byte[] keystate, LLKHF flags)
{
const int buflen = 4;
byte[] buf = new byte[2 * buflen];
int ret = NativeMethods.ToUnicode(vk, sc, keystate, buf, buflen, flags);
if (ret > 0 && ret < buflen)
{
return(Encoding.Unicode.GetString(buf, 0, ret * 2));
}
return("");
}
/// <summary>
/// Get input from the keyboard hook; return true if the key was handled
/// and needs to be removed from the input chain.
/// </summary>
public static bool OnKey(WM ev, VK vk, SC sc, LLKHF flags)
{
// Remember when the user touched a key for the last time
m_last_key_time = DateTime.Now;
// We need to check the keyboard layout before we save the dead
// key, otherwise we may be saving garbage.
KeyboardLayout.CheckForChanges();
KeyboardLayout.SaveDeadKey();
bool ret = OnKeyInternal(ev, vk, sc, flags);
KeyboardLayout.RestoreDeadKey();
return(ret);
}
/// <summary>
/// Get input from the keyboard hook; return true if the key was handled
/// and needs to be removed from the input chain.
/// </summary>
public static bool OnKey(WM ev, VK vk, SC sc, LLKHF flags)
{
// Remember when the user touched a key for the last time
m_last_key_time = DateTime.Now;
// Do nothing if we are disabled
if (m_disabled)
{
return false;
}
int dead_key = SaveDeadKey();
bool ret = OnKeyInternal(ev, vk, sc, flags);
RestoreDeadKey(dead_key);
return ret;
}
/// <summary>
/// Get input from the keyboard hook; return true if the key was handled
/// and needs to be removed from the input chain.
/// </summary>
public static bool OnKey(WM ev, VK vk, SC sc, LLKHF flags)
{
// Remember when the user touched a key for the last time
m_last_key_time = DateTime.Now;
// Do nothing if we are disabled
if (m_disabled)
{
return(false);
}
int dead_key = SaveDeadKey();
bool ret = OnKeyInternal(ev, vk, sc, flags);
RestoreDeadKey(dead_key);
return(ret);
}
/// <summary>
/// Get input from the keyboard hook; return true if the key was handled
/// and needs to be removed from the input chain.
/// </summary>
public static bool OnKey(WM ev, VK vk, SC sc, LLKHF flags)
{
// Remember when the user touched a key for the last time
m_last_key_time = DateTime.Now;
// Do nothing if we are disabled; NOTE: this disables stats, too
if (Settings.Disabled.Value)
{
return(false);
}
// We need to check the keyboard layout before we save the dead
// key, otherwise we may be saving garbage.
CheckKeyboardLayout();
int dead_key = SaveDeadKey();
bool ret = OnKeyInternal(ev, vk, sc, flags);
RestoreDeadKey(dead_key);
return(ret);
}
private static bool OnKeyInternal(WM ev, VK vk, SC sc, LLKHF flags)
{
CheckKeyboardLayout();
bool is_keydown = (ev == WM.KEYDOWN || ev == WM.SYSKEYDOWN);
bool is_keyup = !is_keydown;
bool has_shift = (NativeMethods.GetKeyState(VK.SHIFT) & 0x80) != 0;
bool has_altgr = (NativeMethods.GetKeyState(VK.LCONTROL) &
NativeMethods.GetKeyState(VK.RMENU) & 0x80) != 0;
bool has_lrshift = (NativeMethods.GetKeyState(VK.LSHIFT) &
NativeMethods.GetKeyState(VK.RSHIFT) & 0x80) != 0;
bool has_capslock = NativeMethods.GetKeyState(VK.CAPITAL) != 0;
// Guess what key was just pressed. If we can not find a printable
// representation for the key, default to its virtual key code.
Key key = new Key(vk);
byte[] keystate = new byte[256];
NativeMethods.GetKeyboardState(keystate);
keystate[(int)VK.SHIFT] = (byte)(has_shift ? 0x80 : 0x00);
keystate[(int)VK.CONTROL] = (byte)(has_altgr ? 0x80 : 0x00);
keystate[(int)VK.MENU] = (byte)(has_altgr ? 0x80 : 0x00);
keystate[(int)VK.CAPITAL] = (byte)(has_capslock ? 0x01 : 0x00);
string str_if_normal = KeyToUnicode(vk, sc, keystate, flags);
string str_if_dead = KeyToUnicode(VK.SPACE);
if (str_if_normal != "")
{
// This appears to be a normal, printable key
key = new Key(str_if_normal);
}
else if (str_if_dead != " ")
{
// This appears to be a dead key
key = new Key(str_if_dead);
}
// Special case: we don't consider characters such as Esc as printable
// otherwise they are not properly serialised in the config file.
if (key.IsPrintable() && key.ToString()[0] < ' ')
{
key = new Key(vk);
}
Log("WM.{0} {1} (VK:0x{2:X02} SC:0x{3:X02})",
ev.ToString(), key.FriendlyName, (int)vk, (int)sc);
// FIXME: we don’t properly support compose keys that also normally
// print stuff, such as `.
if (key == Settings.ComposeKey.Value)
{
if (is_keyup)
{
// If we receive a keyup for the compose key, but we hadn't
// previously marked it as down, it means we're in emulation
// mode and we need to cancel it.
if (!m_compose_down)
{
Log("Fallback Off");
SendKeyUp(Settings.ComposeKey.Value.VirtualKey);
}
m_compose_down = false;
}
else if (is_keydown && !m_compose_down)
{
// FIXME: we don't want compose + compose to disable composing,
// since there are compose sequences that use Multi_key.
// FIXME: also, if a sequence was in progress, print it!
m_compose_down = true;
m_composing = !m_composing;
if (!m_composing)
{
m_sequence.Clear();
}
Log("{0} Composing", m_composing ? "Now" : "No Longer");
// Lauch the sequence reset expiration thread
// FIXME: do we need to launch a new thread each time the
// compose key is pressed? Let's have a dormant thread instead
if (m_composing && Settings.ResetDelay.Value > 0)
{
new Thread(() =>
{
while (m_composing && DateTime.Now < m_last_key_time.AddMilliseconds(Settings.ResetDelay.Value))
{
Thread.Sleep(50);
}
ResetSequence();
}).Start();
}
}
Changed(null, new EventArgs());
return(true);
}
// Feature: emulate capslock key with both shift keys, and optionally
// disable capslock using only one shift key.
if (key.VirtualKey == VK.LSHIFT || key.VirtualKey == VK.RSHIFT)
{
if (is_keyup && has_lrshift && Settings.EmulateCapsLock.Value)
{
SendKeyPress(VK.CAPITAL);
return(false);
}
if (is_keydown && has_capslock && Settings.ShiftDisablesCapsLock.Value)
{
SendKeyPress(VK.CAPITAL);
return(false);
}
}
// If we are not currently composing a sequence, do nothing. But if
// this was a dead key, eat it.
if (!m_composing)
{
return(false);
}
// If the compose key is down, maybe there is a key combination
// going on, such as Alt+Tab or Windows+Up, so we abort composing
// and tell the OS that the key is down.
if (m_compose_down && (Settings.KeepOriginalKey.Value ||
!Settings.IsUsableKey(key)))
{
Log("Fallback On");
ResetSequence();
SendKeyDown(Settings.ComposeKey.Value.VirtualKey);
return(false);
}
// If the key can't be used in a sequence, just ignore it.
if (!Settings.IsUsableKey(key))
{
return(false);
}
// If we reached this point, everything else ignored this key, so it
// is a key we must add to the current sequence.
if (is_keydown)
{
return(AddToSequence(key));
}
return(true);
}
/// <summary>
/// Get input from the keyboard hook; return true if the key was handled
/// and needs to be removed from the input chain.
/// </summary>
public static bool OnKey(WM ev, VK vk, SC sc, LLKHF flags)
{
// Remember when the user touched a key for the last time
m_last_key_time = DateTime.Now;
// Do nothing if we are disabled; NOTE: this disables stats, too
if (Settings.Disabled.Value)
{
return false;
}
// We need to check the keyboard layout before we save the dead
// key, otherwise we may be saving garbage.
CheckKeyboardLayout();
int dead_key = SaveDeadKey();
bool ret = OnKeyInternal(ev, vk, sc, flags);
RestoreDeadKey(dead_key);
return ret;
}
private static string VkToUnicode(VK vk, SC sc, byte[] keystate, LLKHF flags)
{
const int buflen = 4;
byte[] buf = new byte[2 * buflen];
int ret = NativeMethods.ToUnicode(vk, sc, keystate, buf, buflen, flags);
if (ret > 0 && ret < buflen)
{
return Encoding.Unicode.GetString(buf, 0, ret * 2);
}
return "";
}
private static Key VkToKey(VK vk, SC sc, LLKHF flags, bool has_shift,
bool has_altgr, bool has_capslock)
{
byte[] keystate = new byte[256];
NativeMethods.GetKeyboardState(keystate);
keystate[(int)VK.SHIFT] = (byte)(has_shift ? 0x80 : 0x00);
keystate[(int)VK.CONTROL] = (byte)(has_altgr ? 0x80 : 0x00);
keystate[(int)VK.MENU] = (byte)(has_altgr ? 0x80 : 0x00);
keystate[(int)VK.CAPITAL] = (byte)(has_capslock ? 0x01 : 0x00);
// These two calls must be done together and in this order.
string str_if_normal = VkToUnicode(vk, sc, keystate, flags);
string str_if_dead = VkToUnicode(VK.SPACE);
if (str_if_dead != " ")
return new Key(str_if_dead);
// Special case: we don't consider characters such as Esc as printable
// otherwise they are not properly serialised in the config file.
if (str_if_normal == "" || str_if_normal[0] < ' ')
return new Key(vk);
return new Key(str_if_normal);
}
private static bool OnKeyInternal(WM ev, VK vk, SC sc, LLKHF flags)
{
bool is_keydown = (ev == WM.KEYDOWN || ev == WM.SYSKEYDOWN);
bool is_keyup = !is_keydown;
bool add_to_sequence = is_keydown;
bool is_capslock_hack = false;
bool compose_is_altgr = m_possible_altgr_keys.Count > 0
&& Settings.ComposeKey.Value.VirtualKey == VK.RMENU;
bool has_shift = (NativeMethods.GetKeyState(VK.SHIFT) & 0x80) != 0;
bool has_altgr = (NativeMethods.GetKeyState(VK.LCONTROL) &
NativeMethods.GetKeyState(VK.RMENU) & 0x80) != 0;
bool has_lrshift = (NativeMethods.GetKeyState(VK.LSHIFT) &
NativeMethods.GetKeyState(VK.RSHIFT) & 0x80) != 0;
bool has_capslock = NativeMethods.GetKeyState(VK.CAPITAL) != 0;
// Guess what the system would print if we weren’t interfering. If
// a printable representation exists, use that. Otherwise, default
// to its virtual key code.
Key key = VkToKey(vk, sc, flags, has_shift, has_altgr, has_capslock);
// If Caps Lock is on, and the Caps Lock hack is enabled, we check
// whether this key without Caps Lock gives a non-ASCII alphabetical
// character. If so, we replace “result” with the lowercase or
// uppercase variant of that character.
if (has_capslock && Settings.CapsLockCapitalizes.Value)
{
Key alt_key = VkToKey(vk, sc, flags, has_shift, has_altgr, false);
if (alt_key.IsPrintable() && alt_key.ToString()[0] > 0x7f)
{
string str_upper = alt_key.ToString().ToUpper();
string str_lower = alt_key.ToString().ToLower();
// Hack for German keyboards: it seems that ToUpper() does
// not properly change ß into ẞ.
if (str_lower == "ß")
str_upper = "ẞ";
if (str_upper != str_lower)
{
key = new Key(has_shift ? str_lower : str_upper);
is_capslock_hack = true;
}
}
}
// Update statistics
if (is_keydown)
{
// Update single key statistics
Stats.AddKey(key);
// Update key pair statistics if applicable
if (DateTime.Now < m_last_key_time.AddMilliseconds(2000)
&& m_last_key != null)
{
Stats.AddPair(m_last_key, key);
}
// Remember when we pressed a key for the last time
m_last_key_time = DateTime.Now;
m_last_key = key;
}
// If the special Synergy window has focus, we’re actually sending
// keystrokes to another computer; disable WinCompose.
if (m_window_is_synergy)
{
return false;
}
// If we receive a keyup for the compose key while in emulation
// mode, we’re done. Send a KeyUp event and exit emulation mode.
if (is_keyup && key == Settings.ComposeKey.Value
&& CurrentState == State.Combination)
{
Log.Debug("Combination Off");
CurrentState = State.Idle;
m_compose_counter = 0;
// If relevant, send an additional KeyUp for the opposite
// key; experience indicates that it helps unstick some
// applications such as mintty.exe.
switch (Settings.ComposeKey.Value.VirtualKey)
{
case VK.LMENU: SendKeyUp(VK.RMENU); break;
case VK.RMENU: SendKeyUp(VK.LMENU);
if (compose_is_altgr)
SendKeyUp(VK.LCONTROL);
break;
case VK.LSHIFT: SendKeyUp(VK.RSHIFT); break;
case VK.RSHIFT: SendKeyUp(VK.LSHIFT); break;
case VK.LCONTROL: SendKeyUp(VK.RCONTROL); break;
case VK.RCONTROL: SendKeyUp(VK.LCONTROL); break;
}
return false;
}
// If this is the compose key and we’re idle, enter Sequence mode
if (is_keydown && key == Settings.ComposeKey.Value
&& m_compose_counter == 0 && CurrentState == State.Idle)
{
Log.Debug("Now Composing");
CurrentState = State.Sequence;
++m_compose_counter;
// Lauch the sequence reset expiration thread
// FIXME: do we need to launch a new thread each time the
// compose key is pressed? Let's have a dormant thread instead
if (Settings.ResetDelay.Value > 0)
{
new Thread(() =>
{
while (CurrentState == State.Sequence &&
DateTime.Now < m_last_key_time.AddMilliseconds(Settings.ResetDelay.Value))
Thread.Sleep(50);
ResetSequence();
}).Start();
}
return true;
}
// If this is a compose key KeyDown event and it’s already down, or it’s
// a KeyUp and it’s already up, eat this event without forwarding it.
if (key == Settings.ComposeKey.Value
&& is_keydown == ((m_compose_counter & 1) != 0))
{
return true;
}
// Escape and backspace cancel the current sequence
if (is_keydown && CurrentState == State.Sequence
&& (key.VirtualKey == VK.ESCAPE || key.VirtualKey == VK.BACK))
{
// FIXME: if a sequence was in progress, maybe print it!
Log.Debug("No Longer Composing");
ResetSequence();
return true;
}
// Feature: emulate capslock key with both shift keys, and optionally
// disable capslock using only one shift key.
if (key.VirtualKey == VK.LSHIFT || key.VirtualKey == VK.RSHIFT)
{
if (is_keyup && has_lrshift && Settings.EmulateCapsLock.Value)
{
SendKeyPress(VK.CAPITAL);
return false;
}
if (is_keydown && has_capslock && Settings.ShiftDisablesCapsLock.Value)
{
SendKeyPress(VK.CAPITAL);
return false;
}
}
// If we are not currently composing a sequence, do nothing unless
// one of our hacks forces us to send the key as a string (for
// instance the Caps Lock capitalisation feature).
if (CurrentState != State.Sequence)
{
if (is_capslock_hack && is_keydown)
{
SendString(key.ToString());
return true;
}
// If this was a dead key, it will be completely ignored. But
// it’s okay since we stored it.
Log.Debug("Forwarding Key to System (not composing)");
return false;
}
// If the compose key is down and the user pressed a new key, maybe
// instead of composing they want to do a key combination, such as
// Alt+Tab or Windows+Up. So we abort composing and send the KeyDown
// event for the Compose key that we previously discarded. The same
// goes for characters that need AltGr when AltGr is the compose key.
//
// Never do this if the event is KeyUp.
// Never do this if we already started a sequence
// Never do this if the key is a modifier key such as shift or alt.
if (m_compose_counter == 1 && is_keydown
&& m_sequence.Count == 0 && !key.IsModifier())
{
bool keep_original = Settings.KeepOriginalKey.Value;
bool key_unusable = !key.IsUsable();
bool altgr_combination = compose_is_altgr &&
m_possible_altgr_keys.ContainsKey(key.ToString());
if (keep_original || key_unusable || altgr_combination)
{
Log.Debug("Combination On");
ResetSequence();
if (compose_is_altgr)
{
// It’s necessary to use KEYEVENTF_EXTENDEDKEY otherwise the system
// does not understand that we’re sending AltGr.
SendKeyDown(VK.LCONTROL);
SendKeyDown(VK.RMENU, KEYEVENTF.EXTENDEDKEY);
}
else
{
SendKeyDown(Settings.ComposeKey.Value.VirtualKey);
}
CurrentState = State.Combination;
return false;
}
}
// If this is the compose key again, use our custom virtual key
// FIXME: we don’t properly support compose keys that also normally
// print stuff, such as `.
if (key == Settings.ComposeKey.Value)
{
++m_compose_counter;
key = new Key(VK.COMPOSE);
// If the compose key is AltGr, we only add it to the sequence
// if it’s a KeyUp event, otherwise we may be adding Multi_key to the
// sequence when the user actually wants to enter an AltGr char.
if (compose_is_altgr && m_compose_counter > 2)
add_to_sequence = is_keyup;
}
// If the compose key is AltGr and it’s down, check whether the current
// key needs translating.
if (compose_is_altgr && (m_compose_counter & 1) != 0)
{
string altgr_variant;
if (m_possible_altgr_keys.TryGetValue(key.ToString(), out altgr_variant))
{
key = new Key(altgr_variant);
// Do as if we already released Compose, otherwise the next KeyUp
// event will cause VK.COMPOSE to be added to the sequence…
++m_compose_counter;
}
}
// If the key can't be used in a sequence, just ignore it.
if (!key.IsUsable())
{
Log.Debug("Forwarding Key to System (no possible sequence uses it)");
return false;
}
// If we reached this point, everything else ignored this key, so it
// is a key we must add to the current sequence.
if (add_to_sequence)
{
Log.Debug("Adding to Sequence: {0}", key.FriendlyName);
return AddToSequence(key);
}
return true;
}
private static bool OnKeyInternal(WM ev, VK vk, SC sc, LLKHF flags)
{
bool is_keydown = (ev == WM.KEYDOWN || ev == WM.SYSKEYDOWN);
bool is_keyup = !is_keydown;
bool add_to_sequence = is_keydown;
bool is_capslock_hack = false;
bool compose_is_altgr = m_possible_altgr_keys.Count > 0 &&
Settings.ComposeKey.Value.VirtualKey == VK.RMENU;
bool has_shift = (NativeMethods.GetKeyState(VK.SHIFT) & 0x80) != 0;
bool has_altgr = (NativeMethods.GetKeyState(VK.LCONTROL) &
NativeMethods.GetKeyState(VK.RMENU) & 0x80) != 0;
bool has_lrshift = (NativeMethods.GetKeyState(VK.LSHIFT) &
NativeMethods.GetKeyState(VK.RSHIFT) & 0x80) != 0;
bool has_capslock = NativeMethods.GetKeyState(VK.CAPITAL) != 0;
// Guess what the system would print if we weren’t interfering. If
// a printable representation exists, use that. Otherwise, default
// to its virtual key code.
Key key = VkToKey(vk, sc, flags, has_shift, has_altgr, has_capslock);
// If Caps Lock is on, and the Caps Lock hack is enabled, we check
// whether this key without Caps Lock gives a non-ASCII alphabetical
// character. If so, we replace “result” with the lowercase or
// uppercase variant of that character.
if (has_capslock && Settings.CapsLockCapitalizes.Value)
{
Key alt_key = VkToKey(vk, sc, flags, has_shift, has_altgr, false);
if (alt_key.IsPrintable() && alt_key.ToString()[0] > 0x7f)
{
string str_upper = alt_key.ToString().ToUpper();
string str_lower = alt_key.ToString().ToLower();
if (str_upper != str_lower)
{
key = new Key(has_shift ? str_lower : str_upper);
is_capslock_hack = true;
}
}
}
// Update statistics
if (is_keydown)
{
// Update single key statistics
Stats.AddKey(key);
// Update key pair statistics if applicable
if (DateTime.Now < m_last_key_time.AddMilliseconds(2000) &&
m_last_key != null)
{
Stats.AddPair(m_last_key, key);
}
// Remember when we pressed a key for the last time
m_last_key_time = DateTime.Now;
m_last_key = key;
}
// If the special Synergy window has focus, we’re actually sending
// keystrokes to another computer; disable WinCompose.
if (m_window_is_synergy)
{
return(false);
}
// If we receive a keyup for the compose key while in emulation
// mode, we’re done. Send a KeyUp event and exit emulation mode.
if (is_keyup && key == Settings.ComposeKey.Value &&
CurrentState == State.Combination)
{
Log.Debug("Combination Off");
CurrentState = State.Idle;
m_compose_counter = 0;
// If relevant, send an additional KeyUp for the opposite
// key; experience indicates that it helps unstick some
// applications such as mintty.exe.
switch (Settings.ComposeKey.Value.VirtualKey)
{
case VK.LMENU: SendKeyUp(VK.RMENU); break;
case VK.RMENU: SendKeyUp(VK.LMENU);
if (compose_is_altgr)
{
SendKeyUp(VK.LCONTROL);
}
break;
case VK.LSHIFT: SendKeyUp(VK.RSHIFT); break;
case VK.RSHIFT: SendKeyUp(VK.LSHIFT); break;
case VK.LCONTROL: SendKeyUp(VK.RCONTROL); break;
case VK.RCONTROL: SendKeyUp(VK.LCONTROL); break;
}
return(false);
}
// If this is the compose key and we’re idle, enter Sequence mode
if (is_keydown && key == Settings.ComposeKey.Value &&
m_compose_counter == 0 && CurrentState == State.Idle)
{
Log.Debug("Now Composing");
CurrentState = State.Sequence;
++m_compose_counter;
// Lauch the sequence reset expiration thread
// FIXME: do we need to launch a new thread each time the
// compose key is pressed? Let's have a dormant thread instead
if (Settings.ResetDelay.Value > 0)
{
new Thread(() =>
{
while (CurrentState == State.Sequence &&
DateTime.Now < m_last_key_time.AddMilliseconds(Settings.ResetDelay.Value))
{
Thread.Sleep(50);
}
ResetSequence();
}).Start();
}
return(true);
}
// If this is a compose key KeyDown event and it’s already down, or it’s
// a KeyUp and it’s already up, eat this event without forwarding it.
if (key == Settings.ComposeKey.Value &&
is_keydown == ((m_compose_counter & 1) != 0))
{
return(true);
}
// Escape and backspace cancel the current sequence
if (is_keydown && CurrentState == State.Sequence &&
(key.VirtualKey == VK.ESCAPE || key.VirtualKey == VK.BACK))
{
// FIXME: if a sequence was in progress, maybe print it!
Log.Debug("No Longer Composing");
ResetSequence();
return(true);
}
// Feature: emulate capslock key with both shift keys, and optionally
// disable capslock using only one shift key.
if (key.VirtualKey == VK.LSHIFT || key.VirtualKey == VK.RSHIFT)
{
if (is_keyup && has_lrshift && Settings.EmulateCapsLock.Value)
{
SendKeyPress(VK.CAPITAL);
return(false);
}
if (is_keydown && has_capslock && Settings.ShiftDisablesCapsLock.Value)
{
SendKeyPress(VK.CAPITAL);
return(false);
}
}
// If we are not currently composing a sequence, do nothing unless
// one of our hacks forces us to send the key as a string (for
// instance the Caps Lock capitalisation feature).
if (CurrentState != State.Sequence)
{
if (is_capslock_hack && is_keydown)
{
SendString(key.ToString());
return(true);
}
// If this was a dead key, it will be completely ignored. But
// it’s okay since we stored it.
Log.Debug("Forwarding Key to System (not composing)");
return(false);
}
// If the compose key is down and the user pressed a new key, maybe
// they want to do a key combination instead of composing, such as
// Alt+Tab or Windows+Up. So we abort composing and send the KeyDown
// event for the Compose key that we previously discarded. The same
// goes for characters that need AltGr when AltGr is the compose key.
//
// Never do this if the event is KeyUp.
// Never do this if we already started a sequence
// Never do this if the key is a modifier key such as shift or alt.
if (m_compose_counter == 1 && is_keydown &&
m_sequence.Count == 0 && !key.IsModifier())
{
bool keep_original = Settings.KeepOriginalKey.Value;
bool key_unusable = !key.IsUsable();
bool altgr_combination = compose_is_altgr &&
m_possible_altgr_keys.ContainsKey(key.ToString());
if (keep_original || key_unusable || altgr_combination)
{
Log.Debug("Combination On");
ResetSequence();
if (compose_is_altgr)
{
// It’s necessary to use KEYEVENTF_EXTENDEDKEY otherwise the system
// does not understand that we’re sending AltGr.
SendKeyDown(VK.LCONTROL);
SendKeyDown(VK.RMENU, KEYEVENTF.EXTENDEDKEY);
}
else
{
SendKeyDown(Settings.ComposeKey.Value.VirtualKey);
}
CurrentState = State.Combination;
return(false);
}
}
// If this is the compose key again, use our custom virtual key
// FIXME: we don’t properly support compose keys that also normally
// print stuff, such as `.
if (key == Settings.ComposeKey.Value)
{
++m_compose_counter;
key = new Key(VK.COMPOSE);
// If the compose key is AltGr, we only add it to the sequence
// if it’s a KeyUp event, otherwise we may be adding Multi_key to the
// sequence when the user actually wants to enter an AltGr char.
if (compose_is_altgr && m_compose_counter > 2)
{
add_to_sequence = is_keyup;
}
}
// If the compose key is AltGr and it’s down, check whether the current
// key needs translating.
if (compose_is_altgr && (m_compose_counter & 1) != 0)
{
string altgr_variant;
if (m_possible_altgr_keys.TryGetValue(key.ToString(), out altgr_variant))
{
key = new Key(altgr_variant);
// Do as if we already released Compose, otherwise the next KeyUp
// event will cause VK.COMPOSE to be added to the sequence…
++m_compose_counter;
}
}
// If the key can't be used in a sequence, just ignore it.
if (!key.IsUsable())
{
Log.Debug("Forwarding Key to System (no possible sequence uses it)");
return(false);
}
// If we reached this point, everything else ignored this key, so it
// is a key we must add to the current sequence.
if (add_to_sequence)
{
Log.Debug("Adding To Sequence: {0}", key.FriendlyName);
return(AddToSequence(key));
}
return(true);
}
private static bool OnKeyInternal(WM ev, VK vk, SC sc, LLKHF flags)
{
//CheckKeyboardLayout();
bool is_keydown = (ev == WM.KEYDOWN || ev == WM.SYSKEYDOWN);
bool is_keyup = !is_keydown;
bool is_capslock_hack = false;
bool has_shift = (NativeMethods.GetKeyState(VK.SHIFT) & 0x80) != 0;
bool has_altgr = (NativeMethods.GetKeyState(VK.LCONTROL) &
NativeMethods.GetKeyState(VK.RMENU) & 0x80) != 0;
bool has_lrshift = (NativeMethods.GetKeyState(VK.LSHIFT) &
NativeMethods.GetKeyState(VK.RSHIFT) & 0x80) != 0;
bool has_capslock = NativeMethods.GetKeyState(VK.CAPITAL) != 0;
// Guess what the system would print if we weren’t interfering. If
// a printable representation exists, use that. Otherwise, default
// to its virtual key code.
Key key = VkToKey(vk, sc, flags, has_shift, has_altgr, has_capslock);
// If Caps Lock is on, and the Caps Lock hack is enabled, we check
// whether this key without Caps Lock gives a non-ASCII alphabetical
// character. If so, we replace “result” with the lowercase or
// uppercase variant of that character.
if (has_capslock && Settings.CapsLockCapitalizes.Value)
{
Key alt_key = VkToKey(vk, sc, flags, has_shift, has_altgr, false);
if (alt_key.IsPrintable() && alt_key.ToString()[0] > 0x7f)
{
string str_upper = alt_key.ToString().ToUpper();
string str_lower = alt_key.ToString().ToLower();
if (str_upper != str_lower)
{
key = new Key(has_shift ? str_lower : str_upper);
is_capslock_hack = true;
}
}
}
// Update statistics
if (is_keydown)
{
// Update single key statistics
Stats.AddKey(key);
// Update key pair statistics if applicable
if (DateTime.Now < m_last_key_time.AddMilliseconds(2000)
&& m_last_key != null)
{
Stats.AddPair(m_last_key, key);
}
// Remember when we pressed a key for the last time
m_last_key_time = DateTime.Now;
m_last_key = key;
}
// FIXME: we don’t properly support compose keys that also normally
// print stuff, such as `.
if (key == Settings.ComposeKey.Value)
{
// If we receive a keyup for the compose key while in emulation
// mode, we’re done. Send a KeyUp event and exit emulation mode.
if (is_keyup && CurrentState == State.Combination)
{
Log.Debug("Combination Off");
CurrentState = State.Idle;
m_compose_down = false;
// If relevant, send an additional KeyUp for the opposite
// key; experience indicates that it helps unstick some
// applications such as mintty.exe.
switch (Settings.ComposeKey.Value.VirtualKey)
{
case VK.LMENU: SendKeyUp(VK.RMENU); break;
case VK.RMENU: SendKeyUp(VK.LMENU); break;
case VK.LSHIFT: SendKeyUp(VK.RSHIFT); break;
case VK.RSHIFT: SendKeyUp(VK.LSHIFT); break;
case VK.LCONTROL: SendKeyUp(VK.RCONTROL); break;
case VK.RCONTROL: SendKeyUp(VK.LCONTROL); break;
}
return false;
}
if (is_keydown && !m_compose_down)
{
// FIXME: we don't want compose + compose to disable composing,
// since there are compose sequences that use Multi_key.
switch (CurrentState)
{
case State.Sequence:
// FIXME: also, if a sequence was in progress, print it!
CurrentState = State.Idle;
m_sequence.Clear();
break;
case State.Idle:
CurrentState = State.Sequence;
// Lauch the sequence reset expiration thread
// FIXME: do we need to launch a new thread each time the
// compose key is pressed? Let's have a dormant thread instead
if (Settings.ResetDelay.Value > 0)
{
new Thread(() =>
{
while (CurrentState == State.Sequence &&
DateTime.Now < m_last_key_time.AddMilliseconds(Settings.ResetDelay.Value))
Thread.Sleep(50);
ResetSequence();
}).Start();
}
break;
}
Log.Debug("{0} Composing", IsComposing() ? "Now" : "No Longer");
}
m_compose_down = is_keydown;
return true;
}
// Feature: emulate capslock key with both shift keys, and optionally
// disable capslock using only one shift key.
if (key.VirtualKey == VK.LSHIFT || key.VirtualKey == VK.RSHIFT)
{
if (is_keyup && has_lrshift && Settings.EmulateCapsLock.Value)
{
SendKeyPress(VK.CAPITAL);
return false;
}
if (is_keydown && has_capslock && Settings.ShiftDisablesCapsLock.Value)
{
SendKeyPress(VK.CAPITAL);
return false;
}
}
// If we are not currently composing a sequence, do nothing unless
// one of our hacks forces us to send the key as a string (for
// instance the Caps Lock capitalisation feature).
if (CurrentState != State.Sequence)
{
if (is_capslock_hack && is_keydown)
{
SendString(key.ToString());
return true;
}
// If this was a dead key, it will be completely ignored. But
// it’s okay since we stored it.
return false;
}
// If the compose key is down and the user pressed a new key, maybe
// they want to do a key combination instead of composing, such as
// Alt+Tab or Windows+Up. So we abort composing and send the KeyDown
// event for the Compose key that we previously discarded.
//
// Never do this if the event is KeyUp.
// Never do this if we already started a sequence
// Never do this if the key is a modifier key such as shift or alt.
if (m_compose_down && is_keydown
&& m_sequence.Count == 0 && !key.IsModifier()
&& (Settings.KeepOriginalKey.Value || !key.IsUsable()))
{
Log.Debug("Combination On");
ResetSequence();
SendKeyDown(Settings.ComposeKey.Value.VirtualKey);
CurrentState = State.Combination;
return false;
}
// If the key can't be used in a sequence, just ignore it.
if (!key.IsUsable())
{
return false;
}
// If we reached this point, everything else ignored this key, so it
// is a key we must add to the current sequence.
if (is_keydown)
{
Log.Debug("Adding To Sequence: {0}", key.FriendlyName);
return AddToSequence(key);
}
return true;
}
private static bool OnKeyInternal(WM ev, VK vk, SC sc, LLKHF flags)
{
bool is_keydown = (ev == WM.KEYDOWN || ev == WM.SYSKEYDOWN);
bool is_keyup = !is_keydown;
bool add_to_sequence = is_keydown;
bool is_capslock_hack = false;
bool has_shift = (NativeMethods.GetKeyState(VK.SHIFT) & 0x80) != 0;
bool has_altgr = (NativeMethods.GetKeyState(VK.LCONTROL) &
NativeMethods.GetKeyState(VK.RMENU) & 0x80) != 0;
bool has_lrshift = (NativeMethods.GetKeyState(VK.LSHIFT) &
NativeMethods.GetKeyState(VK.RSHIFT) & 0x80) != 0;
bool has_capslock = NativeMethods.GetKeyState(VK.CAPITAL) != 0;
// Guess what the system would print if we weren’t interfering. If
// a printable representation exists, use that. Otherwise, default
// to its virtual key code.
Key key = KeyboardLayout.VkToKey(vk, sc, flags, has_shift, has_altgr, has_capslock);
// If Caps Lock is on, and the Caps Lock hack is enabled, we check
// whether this key without Caps Lock gives a non-ASCII alphabetical
// character. If so, we replace “result” with the lowercase or
// uppercase variant of that character.
if (has_capslock && Settings.CapsLockCapitalizes.Value)
{
Key alt_key = KeyboardLayout.VkToKey(vk, sc, flags, has_shift, has_altgr, false);
if (alt_key.IsPrintable && alt_key.ToString()[0] > 0x7f)
{
string str_upper = alt_key.ToString().ToUpper();
string str_lower = alt_key.ToString().ToLower();
// Hack for German keyboards: it seems that ToUpper() does
// not properly change ß into ẞ.
if (str_lower == "ß")
{
str_upper = "ẞ";
}
if (str_upper != str_lower)
{
key = new Key(has_shift ? str_lower : str_upper);
is_capslock_hack = true;
}
}
}
// If we are being used to capture a key, send the resulting key
if (Captured != null)
{
if (!is_keydown)
{
Captured.Invoke(key);
}
return(true);
}
// Update statistics
if (is_keydown)
{
// Update single key statistics
Stats.AddKey(key);
// Update key pair statistics if applicable
if (DateTime.Now < m_last_key_time.AddMilliseconds(2000) &&
m_last_key != null)
{
Stats.AddPair(m_last_key, key);
}
// Remember when we pressed a key for the last time
m_last_key_time = DateTime.Now;
m_last_key = key;
}
// If the special Synergy window has focus, we’re actually sending
// keystrokes to another computer; disable WinCompose. Same if it is
// a Cygwin X window.
if (KeyboardLayout.Window.IsOtherDesktop)
{
return(false);
}
// Sanity check in case the configuration changed between two
// key events.
if (m_current_compose_key.VirtualKey != VK.NONE &&
!Settings.ComposeKeys.Value.Contains(m_current_compose_key))
{
CurrentState = State.Idle;
m_current_compose_key = new Key(VK.NONE);
}
// If we receive a keyup for the compose key while in emulation
// mode, we’re done. Send a KeyUp event and exit emulation mode.
if (is_keyup && CurrentState == State.KeyCombination &&
key == m_current_compose_key)
{
bool compose_key_was_altgr = m_compose_key_is_altgr;
Key old_compose_key = m_current_compose_key;
CurrentState = State.Idle;
m_current_compose_key = new Key(VK.NONE);
m_compose_key_is_altgr = false;
m_compose_counter = 0;
Log.Debug("KeyCombination ended (state: {0})", m_state);
// If relevant, send an additional KeyUp for the opposite
// key; experience indicates that it helps unstick some
// applications such as mintty.exe.
switch (old_compose_key.VirtualKey)
{
case VK.LMENU: SendKeyUp(VK.RMENU); break;
case VK.RMENU: SendKeyUp(VK.LMENU);
// If keyup is RMENU and we have AltGr on this
// keyboard layout, send LCONTROL up too.
if (compose_key_was_altgr)
{
SendKeyUp(VK.LCONTROL);
}
break;
case VK.LSHIFT: SendKeyUp(VK.RSHIFT); break;
case VK.RSHIFT: SendKeyUp(VK.LSHIFT); break;
case VK.LCONTROL: SendKeyUp(VK.RCONTROL); break;
case VK.RCONTROL: SendKeyUp(VK.LCONTROL); break;
}
return(false);
}
// If this is the compose key and we’re idle, enter Sequence mode
if (is_keydown && Settings.ComposeKeys.Value.Contains(key) &&
m_compose_counter == 0 && CurrentState == State.Idle)
{
CurrentState = State.Sequence;
m_current_compose_key = key;
m_compose_key_is_altgr = key.VirtualKey == VK.RMENU &&
KeyboardLayout.HasAltGr;
++m_compose_counter;
Log.Debug("Now composing (state: {0}) (altgr: {1})",
m_state, m_compose_key_is_altgr);
// Lauch the sequence reset expiration timer
if (Settings.ResetDelay.Value > 0)
{
m_timeout.Change(TimeSpan.FromMilliseconds(Settings.ResetDelay.Value), NEVER);
}
return(true);
}
// If this is a compose key KeyDown event and it’s already down, or it’s
// a KeyUp and it’s already up, eat this event without forwarding it.
if (key == m_current_compose_key &&
is_keydown == ((m_compose_counter & 1) != 0))
{
return(true);
}
// Escape and backspace cancel the current sequence
if (is_keydown && CurrentState == State.Sequence &&
(key.VirtualKey == VK.ESCAPE || key.VirtualKey == VK.BACK))
{
// FIXME: if a sequence was in progress, maybe print it!
ResetSequence();
Log.Debug("No longer composing (state: {0})", m_state);
return(true);
}
// Feature: emulate capslock key with both shift keys, and optionally
// disable capslock using only one shift key.
if (key.VirtualKey == VK.LSHIFT || key.VirtualKey == VK.RSHIFT)
{
if (is_keyup && has_lrshift && Settings.EmulateCapsLock.Value)
{
SendKeyPress(VK.CAPITAL);
return(false);
}
if (is_keydown && has_capslock && Settings.ShiftDisablesCapsLock.Value)
{
SendKeyPress(VK.CAPITAL);
return(false);
}
}
// If we are not currently composing a sequence, do nothing unless
// one of our hacks forces us to send the key as a string (for
// instance the Caps Lock capitalisation feature).
if (CurrentState != State.Sequence)
{
if (is_capslock_hack && is_keydown)
{
SendString(key.ToString());
return(true);
}
// If this was a dead key, it will be completely ignored. But
// it’s okay since we stored it.
Log.Debug("Forwarding {0} “{1}” to system (state: {2})",
is_keydown ? "⭝" : "⭜", key.FriendlyName, m_state);
return(false);
}
//
// From this point we know we are composing
//
// If the compose key is down and the user pressed a new key, maybe
// instead of composing they want to do a key combination, such as
// Alt+Tab or Windows+Up. So we abort composing and send the KeyDown
// event for the Compose key that we previously discarded. The same
// goes for characters that need AltGr when AltGr is the compose key.
//
// Never do this if the event is KeyUp.
// Never do this if we already started a sequence
// Never do this if the key is a modifier key such as shift or alt.
if (m_compose_counter == 1 && is_keydown &&
m_sequence.Count == 0 && !key.IsModifier())
{
bool keep_original = Settings.KeepOriginalKey.Value;
bool key_unusable = !key.IsUsable();
bool altgr_combination = m_compose_key_is_altgr &&
KeyboardLayout.KeyToAltGrVariant(key) != null;
if (keep_original || key_unusable || altgr_combination)
{
bool compose_key_was_altgr = m_compose_key_is_altgr;
ResetSequence();
if (compose_key_was_altgr)
{
// It’s necessary to use KEYEVENTF_EXTENDEDKEY otherwise the system
// does not understand that we’re sending AltGr.
SendKeyDown(VK.LCONTROL);
SendKeyDown(VK.RMENU, KEYEVENTF.EXTENDEDKEY);
}
else
{
SendKeyDown(m_current_compose_key.VirtualKey);
}
CurrentState = State.KeyCombination;
Log.Debug("KeyCombination started (state: {0})", m_state);
return(false);
}
}
// If this is the compose key again, use our custom virtual key
// FIXME: we don’t properly support compose keys that also normally
// print stuff, such as `.
if (key == m_current_compose_key)
{
++m_compose_counter;
key = new Key(VK.COMPOSE);
// If the compose key is AltGr, we only add it to the sequence when
// it’s a KeyUp event, otherwise we may be adding Multi_key to the
// sequence while the user actually wants to enter an AltGr char.
if (m_compose_key_is_altgr && m_compose_counter > 2)
{
add_to_sequence = is_keyup;
}
}
// If the compose key is AltGr and it’s down, check whether the current
// key needs translating.
if (m_compose_key_is_altgr && (m_compose_counter & 1) != 0)
{
Key altgr_variant = KeyboardLayout.KeyToAltGrVariant(key);
if (altgr_variant != null)
{
key = altgr_variant;
// Do as if we already released Compose, otherwise the next KeyUp
// event will cause VK.COMPOSE to be added to the sequence…
++m_compose_counter;
}
}
// If the key can't be used in a sequence, just ignore it.
if (!key.IsUsable())
{
Log.Debug("Forwarding unusable {0} “{1}” to system (state: {2})",
is_keydown ? "⭝" : "⭜", key.FriendlyName, m_state);
return(false);
}
// If we reached this point, everything else ignored this key, so it
// is a key we must add to the current sequence.
if (add_to_sequence)
{
Log.Debug("Adding to sequence: {0}", key.FriendlyName);
return(AddToSequence(key));
}
return(true);
}
private static bool OnKeyInternal(WM ev, VK vk, SC sc, LLKHF flags)
{
CheckKeyboardLayout();
bool is_keydown = (ev == WM.KEYDOWN || ev == WM.SYSKEYDOWN);
bool is_keyup = !is_keydown;
bool has_shift = (NativeMethods.GetKeyState(VK.SHIFT) & 0x80) != 0;
bool has_altgr = (NativeMethods.GetKeyState(VK.LCONTROL) &
NativeMethods.GetKeyState(VK.RMENU) & 0x80) != 0;
bool has_lrshift = (NativeMethods.GetKeyState(VK.LSHIFT) &
NativeMethods.GetKeyState(VK.RSHIFT) & 0x80) != 0;
bool has_capslock = NativeMethods.GetKeyState(VK.CAPITAL) != 0;
// Guess what key was just pressed. If we can not find a printable
// representation for the key, default to its virtual key code.
Key key = new Key(vk);
byte[] keystate = new byte[256];
NativeMethods.GetKeyboardState(keystate);
keystate[(int)VK.SHIFT] = (byte)(has_shift ? 0x80 : 0x00);
keystate[(int)VK.CONTROL] = (byte)(has_altgr ? 0x80 : 0x00);
keystate[(int)VK.MENU] = (byte)(has_altgr ? 0x80 : 0x00);
keystate[(int)VK.CAPITAL] = (byte)(has_capslock ? 0x01 : 0x00);
string str_if_normal = KeyToUnicode(vk, sc, keystate, flags);
string str_if_dead = KeyToUnicode(VK.SPACE);
if (str_if_normal != "")
{
// This appears to be a normal, printable key
key = new Key(str_if_normal);
}
else if (str_if_dead != " ")
{
// This appears to be a dead key
key = new Key(str_if_dead);
}
// Special case: we don't consider characters such as Esc as printable
// otherwise they are not properly serialised in the config file.
if (key.IsPrintable() && key.ToString()[0] < ' ')
{
key = new Key(vk);
}
Log("WM.{0} {1} (VK:0x{2:X02} SC:0x{3:X02})",
ev.ToString(), key.FriendlyName, (int)vk, (int)sc);
// FIXME: we don’t properly support compose keys that also normally
// print stuff, such as `.
if (key == Settings.ComposeKey.Value)
{
if (is_keyup)
{
// If we receive a keyup for the compose key, but we hadn't
// previously marked it as down, it means we're in emulation
// mode and we need to cancel it.
if (!m_compose_down)
{
Log("Fallback Off");
SendKeyUp(Settings.ComposeKey.Value.VirtualKey);
}
m_compose_down = false;
}
else if (is_keydown && !m_compose_down)
{
// FIXME: we don't want compose + compose to disable composing,
// since there are compose sequences that use Multi_key.
// FIXME: also, if a sequence was in progress, print it!
m_compose_down = true;
m_composing = !m_composing;
if (!m_composing)
m_sequence.Clear();
Log("{0} Composing", m_composing ? "Now" : "No Longer");
// Lauch the sequence reset expiration thread
// FIXME: do we need to launch a new thread each time the
// compose key is pressed? Let's have a dormant thread instead
if (m_composing && Settings.ResetDelay.Value > 0)
{
new Thread(() =>
{
while (m_composing && DateTime.Now < m_last_key_time.AddMilliseconds(Settings.ResetDelay.Value))
Thread.Sleep(50);
ResetSequence();
}).Start();
}
}
Changed(null, new EventArgs());
return true;
}
// Feature: emulate capslock key with both shift keys, and optionally
// disable capslock using only one shift key.
if (key.VirtualKey == VK.LSHIFT || key.VirtualKey == VK.RSHIFT)
{
if (is_keyup && has_lrshift && Settings.EmulateCapsLock.Value)
{
SendKeyPress(VK.CAPITAL);
return false;
}
if (is_keydown && has_capslock && Settings.ShiftDisablesCapsLock.Value)
{
SendKeyPress(VK.CAPITAL);
return false;
}
}
// If we are not currently composing a sequence, do nothing. But if
// this was a dead key, eat it.
if (!m_composing)
{
return false;
}
// If the compose key is down, maybe there is a key combination
// going on, such as Alt+Tab or Windows+Up, so we abort composing
// and tell the OS that the key is down.
if (m_compose_down && (Settings.KeepOriginalKey.Value
|| !Settings.IsUsableKey(key)))
{
Log("Fallback On");
ResetSequence();
SendKeyDown(Settings.ComposeKey.Value.VirtualKey);
return false;
}
// If the key can't be used in a sequence, just ignore it.
if (!Settings.IsUsableKey(key))
{
return false;
}
// If we reached this point, everything else ignored this key, so it
// is a key we must add to the current sequence.
if (is_keydown)
{
return AddToSequence(key);
}
return true;
}
public static extern int ToUnicode(VK wVirtKey, SC wScanCode,
byte[] lpKeyState, byte[] pwszBuff,
int cchBuff, LLKHF flags);
public static extern int ToUnicode(VK wVirtKey, SC wScanCode,
byte[] lpKeyState, byte[] pwszBuff,
int cchBuff, LLKHF flags);
private static bool OnKeyInternal(WM ev, VK vk, SC sc, LLKHF flags)
{
//CheckKeyboardLayout();
bool is_keydown = (ev == WM.KEYDOWN || ev == WM.SYSKEYDOWN);
bool is_keyup = !is_keydown;
bool is_capslock_hack = false;
bool has_shift = (NativeMethods.GetKeyState(VK.SHIFT) & 0x80) != 0;
bool has_altgr = (NativeMethods.GetKeyState(VK.LCONTROL) &
NativeMethods.GetKeyState(VK.RMENU) & 0x80) != 0;
bool has_lrshift = (NativeMethods.GetKeyState(VK.LSHIFT) &
NativeMethods.GetKeyState(VK.RSHIFT) & 0x80) != 0;
bool has_capslock = NativeMethods.GetKeyState(VK.CAPITAL) != 0;
// Guess what the system would print if we weren’t interfering. If
// a printable representation exists, use that. Otherwise, default
// to its virtual key code.
Key key = VkToKey(vk, sc, flags, has_shift, has_altgr, has_capslock);
// If Caps Lock is on, and the Caps Lock hack is enabled, we check
// whether this key without Caps Lock gives a non-ASCII alphabetical
// character. If so, we replace “result” with the lowercase or
// uppercase variant of that character.
if (has_capslock && Settings.CapsLockCapitalizes.Value)
{
Key alt_key = VkToKey(vk, sc, flags, has_shift, has_altgr, false);
if (alt_key.IsPrintable() && alt_key.ToString()[0] > 0x7f)
{
string str_upper = alt_key.ToString().ToUpper();
string str_lower = alt_key.ToString().ToLower();
if (str_upper != str_lower)
{
key = new Key(has_shift ? str_lower : str_upper);
is_capslock_hack = true;
}
}
}
// Update statistics
if (is_keydown)
{
// Update single key statistics
Stats.AddKey(key);
// Update key pair statistics if applicable
if (DateTime.Now < m_last_key_time.AddMilliseconds(2000) &&
m_last_key != null)
{
Stats.AddPair(m_last_key, key);
}
// Remember when we pressed a key for the last time
m_last_key_time = DateTime.Now;
m_last_key = key;
}
// FIXME: we don’t properly support compose keys that also normally
// print stuff, such as `.
if (key == Settings.ComposeKey.Value)
{
// If we receive a keyup for the compose key while in emulation
// mode, we’re done. Send a KeyUp event and exit emulation mode.
if (is_keyup && CurrentState == State.Combination)
{
Log.Debug("Combination Off");
CurrentState = State.Idle;
m_compose_down = false;
// If relevant, send an additional KeyUp for the opposite
// key; experience indicates that it helps unstick some
// applications such as mintty.exe.
switch (Settings.ComposeKey.Value.VirtualKey)
{
case VK.LMENU: SendKeyUp(VK.RMENU); break;
case VK.RMENU: SendKeyUp(VK.LMENU); break;
case VK.LSHIFT: SendKeyUp(VK.RSHIFT); break;
case VK.RSHIFT: SendKeyUp(VK.LSHIFT); break;
case VK.LCONTROL: SendKeyUp(VK.RCONTROL); break;
case VK.RCONTROL: SendKeyUp(VK.LCONTROL); break;
}
return(false);
}
if (is_keydown && !m_compose_down)
{
// FIXME: we don't want compose + compose to disable composing,
// since there are compose sequences that use Multi_key.
switch (CurrentState)
{
case State.Sequence:
// FIXME: also, if a sequence was in progress, print it!
CurrentState = State.Idle;
m_sequence.Clear();
break;
case State.Idle:
CurrentState = State.Sequence;
// Lauch the sequence reset expiration thread
// FIXME: do we need to launch a new thread each time the
// compose key is pressed? Let's have a dormant thread instead
if (Settings.ResetDelay.Value > 0)
{
new Thread(() =>
{
while (CurrentState == State.Sequence &&
DateTime.Now < m_last_key_time.AddMilliseconds(Settings.ResetDelay.Value))
{
Thread.Sleep(50);
}
ResetSequence();
}).Start();
}
break;
}
Log.Debug("{0} Composing", IsComposing() ? "Now" : "No Longer");
}
m_compose_down = is_keydown;
return(true);
}
// Feature: emulate capslock key with both shift keys, and optionally
// disable capslock using only one shift key.
if (key.VirtualKey == VK.LSHIFT || key.VirtualKey == VK.RSHIFT)
{
if (is_keyup && has_lrshift && Settings.EmulateCapsLock.Value)
{
SendKeyPress(VK.CAPITAL);
return(false);
}
if (is_keydown && has_capslock && Settings.ShiftDisablesCapsLock.Value)
{
SendKeyPress(VK.CAPITAL);
return(false);
}
}
// If we are not currently composing a sequence, do nothing unless
// one of our hacks forces us to send the key as a string (for
// instance the Caps Lock capitalisation feature).
if (CurrentState != State.Sequence)
{
if (is_capslock_hack && is_keydown)
{
SendString(key.ToString());
return(true);
}
// If this was a dead key, it will be completely ignored. But
// it’s okay since we stored it.
return(false);
}
// If the compose key is down and the user pressed a new key, maybe
// they want to do a key combination instead of composing, such as
// Alt+Tab or Windows+Up. So we abort composing and send the KeyDown
// event for the Compose key that we previously discarded.
//
// Never do this if the event is KeyUp.
// Never do this if we already started a sequence
// Never do this if the key is a modifier key such as shift or alt.
if (m_compose_down && is_keydown &&
m_sequence.Count == 0 && !key.IsModifier() &&
(Settings.KeepOriginalKey.Value || !key.IsUsable()))
{
Log.Debug("Combination On");
ResetSequence();
SendKeyDown(Settings.ComposeKey.Value.VirtualKey);
CurrentState = State.Combination;
return(false);
}
// If the key can't be used in a sequence, just ignore it.
if (!key.IsUsable())
{
return(false);
}
// If we reached this point, everything else ignored this key, so it
// is a key we must add to the current sequence.
if (is_keydown)
{
Log.Debug("Adding To Sequence: {0}", key.FriendlyName);
return(AddToSequence(key));
}
return(true);
}
