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
CKeyMap::collectButtons(const ModifierToKeys& mods, ButtonToKeyMap& keys)
{
keys.clear();
for (ModifierToKeys::const_iterator i = mods.begin();
i != mods.end(); ++i) {
keys.insert(std::make_pair(i->second.m_button, &i->second));
}
}
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;
}
}
}
