bool
CKeyMap::keysToRestoreModifiers(const KeyItem& keyItem, SInt32,
ModifierToKeys& activeModifiers,
KeyModifierMask& currentState,
const ModifierToKeys& desiredModifiers,
Keystrokes& keystrokes) const
{
// XXX -- we're not considering modified modifiers here
ModifierToKeys oldModifiers = activeModifiers;
// get the pressed modifier buttons before and after
ButtonToKeyMap oldKeys, newKeys;
collectButtons(oldModifiers, oldKeys);
collectButtons(desiredModifiers, newKeys);
// release unwanted keys
for (ModifierToKeys::const_iterator i = oldModifiers.begin();
i != oldModifiers.end(); ++i) {
KeyButton button = i->second.m_button;
if (button != keyItem.m_button && newKeys.count(button) == 0) {
EKeystroke type = kKeystrokeRelease;
if (i->second.m_lock) {
type = kKeystrokeUnmodify;
}
addKeystrokes(type, i->second,
activeModifiers, currentState, keystrokes);
}
}
// press wanted keys
for (ModifierToKeys::const_iterator i = desiredModifiers.begin();
i != desiredModifiers.end(); ++i) {
KeyButton button = i->second.m_button;
if (button != keyItem.m_button && oldKeys.count(button) == 0) {
EKeystroke type = kKeystrokePress;
if (i->second.m_lock) {
type = kKeystrokeModify;
}
addKeystrokes(type, i->second,
activeModifiers, currentState, keystrokes);
}
}
return true;
}
void
CKeyState::updateModifierKeyState(KeyButton button,
const ModifierToKeys& oldModifiers,
const ModifierToKeys& newModifiers)
{
// get the pressed modifier buttons before and after
CKeyMap::ButtonToKeyMap oldKeys, newKeys;
for (ModifierToKeys::const_iterator i = oldModifiers.begin();
i != oldModifiers.end(); ++i) {
oldKeys.insert(std::make_pair(i->second.m_button, &i->second));
}
for (ModifierToKeys::const_iterator i = newModifiers.begin();
i != newModifiers.end(); ++i) {
newKeys.insert(std::make_pair(i->second.m_button, &i->second));
}
// get the modifier buttons that were pressed or released
CKeyMap::ButtonToKeyMap pressed, released;
std::set_difference(oldKeys.begin(), oldKeys.end(),
newKeys.begin(), newKeys.end(),
std::inserter(released, released.end()),
ButtonToKeyLess());
std::set_difference(newKeys.begin(), newKeys.end(),
oldKeys.begin(), oldKeys.end(),
std::inserter(pressed, pressed.end()),
ButtonToKeyLess());
// update state
for (CKeyMap::ButtonToKeyMap::const_iterator i = released.begin();
i != released.end(); ++i) {
if (i->first != button) {
m_keys[i->first] = 0;
m_syntheticKeys[i->first] = 0;
}
}
for (CKeyMap::ButtonToKeyMap::const_iterator i = pressed.begin();
i != pressed.end(); ++i) {
if (i->first != button) {
m_keys[i->first] = 1;
m_syntheticKeys[i->first] = 1;
m_keyClientData[i->first] = i->second->m_client;
}
}
}
void
CKeyMap::addKeystrokes(EKeystroke type, const KeyItem& keyItem,
ModifierToKeys& activeModifiers,
KeyModifierMask& currentState,
Keystrokes& keystrokes) const
{
KeyButton button = keyItem.m_button;
UInt32 data = keyItem.m_client;
switch (type) {
case kKeystrokePress:
keystrokes.push_back(Keystroke(button, true, false, data));
if (keyItem.m_generates != 0) {
if (!keyItem.m_lock || (currentState & keyItem.m_generates) == 0) {
// add modifier key and activate modifier
activeModifiers.insert(std::make_pair(
keyItem.m_generates, keyItem));
currentState |= keyItem.m_generates;
}
else {
// deactivate locking modifier
activeModifiers.erase(keyItem.m_generates);
currentState &= ~keyItem.m_generates;
}
}
break;
case kKeystrokeRelease:
keystrokes.push_back(Keystroke(button, false, false, data));
if (keyItem.m_generates != 0 && !keyItem.m_lock) {
// remove key from active modifiers
std::pair<ModifierToKeys::iterator,
ModifierToKeys::iterator> range =
activeModifiers.equal_range(keyItem.m_generates);
for (ModifierToKeys::iterator i = range.first;
i != range.second; ++i) {
if (i->second.m_button == button) {
activeModifiers.erase(i);
break;
}
}
// if no more keys for this modifier then deactivate modifier
if (activeModifiers.count(keyItem.m_generates) == 0) {
currentState &= ~keyItem.m_generates;
}
}
break;
case kKeystrokeRepeat:
keystrokes.push_back(Keystroke(button, false, true, data));
keystrokes.push_back(Keystroke(button, true, true, data));
// no modifier changes on key repeat
break;
case kKeystrokeClick:
keystrokes.push_back(Keystroke(button, true, false, data));
keystrokes.push_back(Keystroke(button, false, false, data));
// no modifier changes on key click
break;
case kKeystrokeModify:
case kKeystrokeUnmodify:
if (keyItem.m_lock) {
// we assume there's just one button for this modifier
if (m_halfDuplex.count(button) > 0) {
if (type == kKeystrokeModify) {
// turn half-duplex toggle on (press)
keystrokes.push_back(Keystroke(button, true, false, data));
}
else {
// turn half-duplex toggle off (release)
keystrokes.push_back(Keystroke(button, false, false, data));
}
}
else {
// toggle (click)
keystrokes.push_back(Keystroke(button, true, false, data));
keystrokes.push_back(Keystroke(button, false, false, data));
}
}
else if (type == kKeystrokeModify) {
// press modifier
keystrokes.push_back(Keystroke(button, true, false, data));
}
else {
// release all the keys that generate the modifier that are
// currently down
std::pair<ModifierToKeys::const_iterator,
ModifierToKeys::const_iterator> range =
activeModifiers.equal_range(keyItem.m_generates);
for (ModifierToKeys::const_iterator i = range.first;
i != range.second; ++i) {
keystrokes.push_back(Keystroke(i->second.m_button,
false, false, i->second.m_client));
}
}
if (type == kKeystrokeModify) {
activeModifiers.insert(std::make_pair(
keyItem.m_generates, keyItem));
currentState |= keyItem.m_generates;
}
else {
activeModifiers.erase(keyItem.m_generates);
currentState &= ~keyItem.m_generates;
}
break;
}
}
