mirror of https://github.com/debauchee/barrier.git
changed processing of key events in X. secondary screen now
activates/deactivates modifiers as necessary to get a keycode interpreted as the expected keysym. still some work and testing to do on this.
This commit is contained in:
crs
parent
b01fc4bd35
commit
419eadfaf9
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@ -4,6 +4,9 @@
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#include "CLog.h"
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#include <assert.h>
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#include <X11/X.h>
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#include <X11/Xutil.h>
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#define XK_MISCELLANY
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#include <X11/keysymdef.h>
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#include <X11/extensions/XTest.h>
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//
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@ -35,6 +38,17 @@ void CXWindowsSecondaryScreen::run()
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// handle event
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switch (xevent.type) {
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case MappingNotify: {
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// keyboard mapping changed
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CDisplayLock display(this);
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XRefreshKeyboardMapping(&xevent.xmapping);
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updateKeys(display);
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updateKeycodeMap(display);
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updateModifierMap(display);
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updateModifiers(display);
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break;
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}
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case LeaveNotify: {
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// mouse moved out of hider window somehow. hide the window.
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assert(m_window != None);
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@ -118,6 +132,12 @@ void CXWindowsSecondaryScreen::open(CClient* client)
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if (!XQueryExtension(display, XTestExtensionName,
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&majorOpcode, &firstEvent, &firstError))
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throw int(6); // FIXME -- make exception for this
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// update key state
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updateKeys(display);
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updateKeycodeMap(display);
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updateModifierMap(display);
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updateModifiers(display);
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}
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void CXWindowsSecondaryScreen::close()
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@ -143,6 +163,10 @@ void CXWindowsSecondaryScreen::enter(SInt32 x, SInt32 y)
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// show cursor
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XUnmapWindow(display, m_window);
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// update our keyboard state to reflect the local state
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updateKeys(display);
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updateModifiers(display);
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}
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void CXWindowsSecondaryScreen::leave()
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@ -154,8 +178,25 @@ void CXWindowsSecondaryScreen::leave()
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void CXWindowsSecondaryScreen::keyDown(
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KeyID key, KeyModifierMask mask)
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{
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Keystrokes keys;
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KeyCode keycode;
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CDisplayLock display(this);
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XTestFakeKeyEvent(display, mapKey(key, mask), True, CurrentTime);
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// get the sequence of keys to simulate key press and the final
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// modifier state.
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m_mask = mapKey(keys, keycode, key, mask, True);
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if (keys.empty())
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return;
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// generate key events
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for (Keystrokes::const_iterator k = keys.begin(); k != keys.end(); ++k)
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XTestFakeKeyEvent(display, k->first, k->second, CurrentTime);
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// note that key is now down
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m_keys[keycode] = true;
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// update
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XSync(display, False);
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}
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@ -169,8 +210,25 @@ void CXWindowsSecondaryScreen::keyRepeat(
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void CXWindowsSecondaryScreen::keyUp(
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KeyID key, KeyModifierMask mask)
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{
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Keystrokes keys;
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KeyCode keycode;
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CDisplayLock display(this);
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XTestFakeKeyEvent(display, mapKey(key, mask), False, CurrentTime);
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// get the sequence of keys to simulate key release and the final
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// modifier state.
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m_mask = mapKey(keys, keycode, key, mask, False);
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if (keys.empty())
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return;
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// generate key events
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for (Keystrokes::const_iterator k = keys.begin(); k != keys.end(); ++k)
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XTestFakeKeyEvent(display, k->first, k->second, CurrentTime);
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// note that key is now up
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m_keys[keycode] = false;
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// update
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XSync(display, False);
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}
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@ -294,17 +352,408 @@ void CXWindowsSecondaryScreen::leaveNoLock(Display* display)
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XWarpPointer(display, None, m_window, 0, 0, 0, 0, 0, 0);
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}
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KeyCode CXWindowsSecondaryScreen::mapKey(
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KeyID id, KeyModifierMask /*mask*/) const
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{
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CDisplayLock display(this);
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// FIXME -- use mask
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return XKeysymToKeycode(display, static_cast<KeySym>(id));
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}
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unsigned int CXWindowsSecondaryScreen::mapButton(
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ButtonID id) const
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{
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// FIXME -- should use button mapping?
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return static_cast<unsigned int>(id);
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}
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KeyModifierMask CXWindowsSecondaryScreen::mapKey(
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Keystrokes& keys,
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KeyCode& keycode,
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KeyID id, KeyModifierMask mask,
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Bool press) const
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{
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// note -- must have display locked on entry
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// the system translates key events into characters depending
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// on the modifier key state at the time of the event. to
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// generate the right keysym we need to set the modifier key
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// states appropriately.
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//
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// the mask passed by the caller is the desired mask. however,
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// there may not be a keycode mapping to generate the desired
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// keysym with that mask. we override the bits in the mask
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// that cannot be accomodated.
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// lookup the a keycode for this key id. also return the
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// key modifier mask required.
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unsigned int outMask;
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if (!findKeyCode(keycode, outMask, id, maskToX(mask))) {
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// we cannot generate the desired keysym because no key
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// maps to that keysym. just return the current mask.
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return m_mask;
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}
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// if we cannot match the modifier mask then don't return any
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// keys and just return the current mask.
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if ((outMask & m_modifierMask) != outMask) {
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return m_mask;
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}
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// note if the key is a modifier
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ModifierMap::const_iterator index = m_keycodeToModifier.find(keycode);
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const bool isModifier = (index != m_keycodeToModifier.end());
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// add the key events required to get to the modifier state
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// necessary to generate an event yielding id. also save the
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// key events required to restore the state. if the key is
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// a modifier key then skip this because modifiers should not
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// modify modifiers.
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Keystrokes undo;
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if (outMask != m_mask && !isModifier) {
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for (unsigned int i = 0; i < 8; ++i) {
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unsigned int bit = (1 << i);
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if ((outMask & bit) != (m_mask & bit)) {
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// get list of keycodes for the modifier. there must
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// be at least one.
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const KeyCode* modifierKeys =
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&m_modifierToKeycode[i * m_keysPerModifier];
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assert(modifierKeys[0] != 0);
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if ((outMask & bit) != 0) {
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// modifier is not active but should be. if the
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// modifier is a toggle then toggle it on with a
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// press/release, otherwise activate it with a
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// press. use the first keycode for the modifier.
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const KeyCode modifierKey = modifierKeys[0];
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keys.push_back(std::make_pair(modifierKey, True));
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if ((bit & m_toggleModifierMask) != 0) {
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keys.push_back(std::make_pair(modifierKey, False));
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undo.push_back(std::make_pair(modifierKey, False));
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undo.push_back(std::make_pair(modifierKey, True));
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}
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else {
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undo.push_back(std::make_pair(modifierKey, False));
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}
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}
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else {
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// modifier is active but should not be. if the
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// modifier is a toggle then toggle it off with a
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// press/release, otherwise deactivate it with a
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// release. we must check each keycode for the
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// modifier if not a toggle.
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if (bit & m_toggleModifierMask) {
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const KeyCode modifierKey = modifierKeys[0];
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keys.push_back(std::make_pair(modifierKey, True));
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keys.push_back(std::make_pair(modifierKey, False));
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undo.push_back(std::make_pair(modifierKey, False));
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undo.push_back(std::make_pair(modifierKey, True));
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}
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else {
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for (unsigned int j = 0; j < m_keysPerModifier; ++j) {
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const KeyCode key = modifierKeys[j];
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if (m_keys[key]) {
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keys.push_back(std::make_pair(key, False));
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undo.push_back(std::make_pair(key, True));
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}
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}
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}
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}
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}
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}
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}
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// add the key event
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keys.push_back(std::make_pair(keycode, press));
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// add key events to restore the modifier state. apply events in
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// the reverse order that they're stored in undo.
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while (!undo.empty()) {
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keys.push_back(undo.back());
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undo.pop_back();
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}
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// if the key is a modifier key then compute the modifier map after
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// this key is pressed.
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mask = m_mask;
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if (isModifier) {
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// get modifier
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const unsigned int modifierBit = (1 << index->second);
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// toggle keys modify the state on press if toggling on and on
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// release if toggling off. other keys set the bit on press
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// and clear the bit on release.
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if ((modifierBit & m_toggleModifierMask) != 0) {
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if (((mask & modifierBit) == 0) == press)
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mask ^= modifierBit;
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}
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else if (press) {
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mask |= modifierBit;
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}
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else {
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// can't reset bit until all keys that set it are released.
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// scan those keys to see if any (except keycode) are pressed.
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bool down = false;
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const KeyCode* modifierKeys = &m_modifierToKeycode[
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index->second * m_keysPerModifier];
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for (unsigned int j = 0; !down && j < m_keysPerModifier; ++j) {
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if (m_keys[modifierKeys[j]])
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down = true;
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}
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if (!down)
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mask &= ~modifierBit;
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}
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}
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return mask;
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}
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bool CXWindowsSecondaryScreen::findKeyCode(
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KeyCode& keycode,
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unsigned int& maskOut,
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KeyID id,
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unsigned int maskIn) const
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{
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// find a keycode to generate id. XKeysymToKeycode() almost does
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// what we need but won't tell us which index to use with the
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// keycode. return false if there's no keycode to generate id.
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KeyCodeMap::const_iterator index = m_keycodeMap.find(id);
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if (index == m_keycodeMap.end())
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return false;
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// save the keycode
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keycode = index->second.keycode;
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// compute output mask. that's the set of modifiers that need to
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// be enabled when the keycode event is encountered in order to
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// generate the id keysym and match maskIn. it's possible that
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// maskIn wants, say, a shift key to be down but that would make
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// it impossible to generate the keysym. in that case we must
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// override maskIn.
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//
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// this is complicated by caps/shift-lock and num-lock. for
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// example, if id is a keypad keysym and maskIn indicates that
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// shift is not active but keyMask indicates that shift is
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// required then we can either activate shift and then send
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// the keycode or we can activate num-lock and then send the
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// keycode. the latter is better because applications may
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// treat, say, shift+Home differently than Home.
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maskOut = (maskIn & ~index->second.keyMaskMask);
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if (IsKeypadKey(id) || IsPrivateKeypadKey(id)) {
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// compare shift state of maskIn and keyMask
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const bool agree = ((maskIn & ShiftMask) ==
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(index->second.keyMask & ShiftMask));
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// get num-lock state
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const bool numLockActive = ((m_mask & m_numLockMask) != 0);
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// if num-lock is active and the shift states agree or if
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// num-lock is not active and the shift states do not agree
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// then we should toggle num-lock.
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if (numLockActive == agree) {
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maskOut |= (maskIn & ShiftMask) |
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(index->second.keyMask & ~ShiftMask);
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if (numLockActive)
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maskOut &= ~m_numLockMask;
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else
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maskOut |= m_numLockMask;
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}
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else {
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maskOut |= index->second.keyMask;
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}
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}
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else {
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// compare shift state of maskIn and keyMask
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const bool agree = ((maskIn & ShiftMask) ==
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(index->second.keyMask & ShiftMask));
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// get caps-lock state
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const bool capsLockActive = ((m_mask & m_capsLockMask) != 0);
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// if caps-lock is active and the shift states agree or if
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// caps-lock is not active and the shift states do not agree
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// then we should toggle caps-lock.
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if (capsLockActive == agree) {
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maskOut |= (maskIn & ShiftMask) |
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(index->second.keyMask & ~ShiftMask);
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if (capsLockActive)
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maskOut &= ~m_capsLockMask;
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else
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maskOut |= m_capsLockMask;
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}
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else {
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maskOut |= index->second.keyMask;
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}
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}
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return true;
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}
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unsigned int CXWindowsSecondaryScreen::maskToX(
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KeyModifierMask inMask) const
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{
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// FIXME -- should be configurable. not using Mod3Mask.
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unsigned int outMask = 0;
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if (inMask & KeyModifierShift)
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outMask |= ShiftMask;
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if (inMask & KeyModifierControl)
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outMask |= ControlMask;
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if (inMask & KeyModifierAlt)
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outMask |= Mod1Mask;
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if (inMask & KeyModifierMeta)
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outMask |= Mod4Mask;
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if (inMask & KeyModifierCapsLock)
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outMask |= LockMask;
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if (inMask & KeyModifierNumLock)
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outMask |= Mod2Mask;
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if (inMask & KeyModifierScrollLock)
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outMask |= Mod5Mask;
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return outMask;
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}
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void CXWindowsSecondaryScreen::updateKeys(Display* display)
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{
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// ask server which keys are pressed
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char keys[32];
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XQueryKeymap(display, keys);
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// transfer to our state
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for (unsigned int i = 0, j = 0; i < 32; j += 8, ++i) {
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m_keys[j + 0] = ((keys[i] & 0x01) != 0);
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m_keys[j + 1] = ((keys[i] & 0x02) != 0);
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m_keys[j + 2] = ((keys[i] & 0x04) != 0);
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m_keys[j + 3] = ((keys[i] & 0x08) != 0);
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m_keys[j + 4] = ((keys[i] & 0x10) != 0);
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m_keys[j + 5] = ((keys[i] & 0x20) != 0);
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m_keys[j + 6] = ((keys[i] & 0x40) != 0);
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m_keys[j + 7] = ((keys[i] & 0x80) != 0);
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}
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}
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void CXWindowsSecondaryScreen::updateModifiers(
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Display*)
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{
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// update active modifier mask
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m_mask = 0;
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for (unsigned int i = 0; i < 8; ++i) {
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const unsigned int bit = (1 << i);
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if ((bit & m_toggleModifierMask) == 0) {
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for (unsigned int j = 0; j < m_keysPerModifier; ++j) {
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if (m_keys[m_modifierToKeycode[i * m_keysPerModifier + j]])
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m_mask |= bit;
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}
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}
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else {
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// FIXME -- not sure how to check current lock states
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}
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}
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}
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void CXWindowsSecondaryScreen::updateKeycodeMap(
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Display* display)
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{
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// get the number of keycodes
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int minKeycode, maxKeycode;
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XDisplayKeycodes(display, &minKeycode, &maxKeycode);
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const int numKeycodes = maxKeycode - minKeycode + 1;
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// get the keyboard mapping for all keys
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int keysymsPerKeycode;
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KeySym* keysyms = XGetKeyboardMapping(display,
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minKeycode, numKeycodes,
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&keysymsPerKeycode);
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// restrict keysyms per keycode to 2 because, frankly, i have no
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// idea how/what modifiers are used to access keysyms beyond the
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// first 2.
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int numKeysyms = 2; // keysymsPerKeycode
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// initialize
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KeyCodeMask entry;
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m_keycodeMap.clear();
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// insert keys
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for (int i = 0; i < numKeycodes; ++i) {
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// how many keysyms for this keycode?
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int n;
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for (n = 0; n < numKeysyms; ++n) {
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if (keysyms[i * keysymsPerKeycode + n] == NoSymbol) {
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break;
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}
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}
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// move to next keycode if there are no keysyms
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if (n == 0) {
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continue;
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}
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// set the mask of modifiers that this keycode uses
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entry.keyMaskMask = (n == 1) ? 0 : (ShiftMask | LockMask);
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// add entries for this keycode
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entry.keycode = static_cast<KeyCode>(minKeycode + i);
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for (int j = 0; j < numKeysyms; ++j) {
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entry.keyMask = (j == 0) ? 0 : ShiftMask;
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m_keycodeMap.insert(std::make_pair(keysyms[i *
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keysymsPerKeycode + j], entry));
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}
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}
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// clean up
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XFree(keysyms);
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}
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void CXWindowsSecondaryScreen::updateModifierMap(
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Display* display)
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{
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// get modifier map from server
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XModifierKeymap* keymap = XGetModifierMapping(display);
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// initialize
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m_modifierMask = 0;
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m_toggleModifierMask = 0;
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m_numLockMask = 0;
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m_capsLockMask = 0;
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m_keysPerModifier = keymap->max_keypermod;
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m_modifierToKeycode.clear();
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m_modifierToKeycode.resize(8 * m_keysPerModifier);
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|
||||
// set keycodes and masks
|
||||
for (unsigned int i = 0; i < 8; ++i) {
|
||||
const unsigned int bit = (1 << i);
|
||||
for (unsigned int j = 0; j < m_keysPerModifier; ++j) {
|
||||
KeyCode keycode = keymap->modifiermap[i * m_keysPerModifier + j];
|
||||
|
||||
// save in modifier to keycode
|
||||
m_modifierToKeycode[i * m_keysPerModifier + j] = keycode;
|
||||
|
||||
// save in keycode to modifier
|
||||
m_keycodeToModifier.insert(std::make_pair(keycode, i));
|
||||
|
||||
// modifier is enabled if keycode isn't 0
|
||||
if (keycode != 0)
|
||||
m_modifierMask |= bit;
|
||||
|
||||
// modifier is a toggle if the keysym is a toggle modifier
|
||||
const KeySym keysym = XKeycodeToKeysym(display, keycode, 0);
|
||||
if (isToggleKeysym(keysym)) {
|
||||
m_toggleModifierMask |= bit;
|
||||
|
||||
// note num/caps-lock
|
||||
if (keysym == XK_Num_Lock)
|
||||
m_numLockMask |= bit;
|
||||
if (keysym == XK_Caps_Lock)
|
||||
m_capsLockMask |= bit;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
XFreeModifiermap(keymap);
|
||||
}
|
||||
|
||||
bool CXWindowsSecondaryScreen::isToggleKeysym(KeySym key)
|
||||
{
|
||||
switch (key) {
|
||||
case XK_Caps_Lock:
|
||||
case XK_Shift_Lock:
|
||||
case XK_Num_Lock:
|
||||
case XK_Scroll_Lock:
|
||||
return true;
|
||||
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -3,6 +3,7 @@
|
|||
|
||||
#include "CXWindowsScreen.h"
|
||||
#include "ISecondaryScreen.h"
|
||||
#include <vector>
|
||||
|
||||
class CXWindowsSecondaryScreen : public CXWindowsScreen, public ISecondaryScreen {
|
||||
public:
|
||||
|
|
@ -35,13 +36,63 @@ class CXWindowsSecondaryScreen : public CXWindowsScreen, public ISecondaryScreen
|
|||
virtual void onCloseDisplay();
|
||||
|
||||
private:
|
||||
struct KeyCodeMask {
|
||||
public:
|
||||
KeyCode keycode;
|
||||
unsigned int keyMask;
|
||||
unsigned int keyMaskMask;
|
||||
};
|
||||
typedef std::pair<KeyCode, Bool> Keystroke;
|
||||
typedef std::vector<Keystroke> Keystrokes;
|
||||
typedef std::vector<KeyCode> KeyCodes;
|
||||
typedef std::map<KeyID, KeyCodeMask> KeyCodeMap;
|
||||
typedef std::map<KeyCode, unsigned int> ModifierMap;
|
||||
|
||||
void leaveNoLock(Display*);
|
||||
KeyCode mapKey(KeyID, KeyModifierMask) const;
|
||||
unsigned int mapButton(ButtonID button) const;
|
||||
|
||||
unsigned int mapKey(Keystrokes&, KeyCode&, KeyID,
|
||||
KeyModifierMask, Bool press) const;
|
||||
bool findKeyCode(KeyCode&, unsigned int&,
|
||||
KeyID id, unsigned int) const;
|
||||
unsigned int maskToX(KeyModifierMask) const;
|
||||
|
||||
void updateKeys(Display* display);
|
||||
void updateKeycodeMap(Display* display);
|
||||
void updateModifiers(Display* display);
|
||||
void updateModifierMap(Display* display);
|
||||
static bool isToggleKeysym(KeySym);
|
||||
|
||||
private:
|
||||
CClient* m_client;
|
||||
Window m_window;
|
||||
|
||||
// set entries indicate keys that are pressed. indexed by keycode.
|
||||
bool m_keys[256];
|
||||
|
||||
// current active modifiers (X key masks)
|
||||
unsigned int m_mask;
|
||||
|
||||
// maps key IDs to X keycodes and the X modifier key mask needed
|
||||
// to generate the right keysym
|
||||
KeyCodeMap m_keycodeMap;
|
||||
|
||||
// the modifiers that have keys bound to them
|
||||
unsigned int m_modifierMask;
|
||||
|
||||
// set bits indicate modifiers that toggle (e.g. caps-lock)
|
||||
unsigned int m_toggleModifierMask;
|
||||
|
||||
// masks that indicate which modifier bits are num-lock and caps-lock
|
||||
unsigned int m_numLockMask;
|
||||
unsigned int m_capsLockMask;
|
||||
|
||||
// map X modifier key indices to the key codes bound to them
|
||||
unsigned int m_keysPerModifier;
|
||||
KeyCodes m_modifierToKeycode;
|
||||
|
||||
// maps keycodes to modifier indices
|
||||
ModifierMap m_keycodeToModifier;
|
||||
};
|
||||
|
||||
#endif
|
||||
|
|
|
|||
|
|
@ -4,6 +4,7 @@
|
|||
#include "CLog.h"
|
||||
#include <assert.h>
|
||||
#include <X11/X.h>
|
||||
#include <X11/Xutil.h>
|
||||
|
||||
//
|
||||
// CXWindowsPrimaryScreen
|
||||
|
|
@ -40,10 +41,17 @@ void CXWindowsPrimaryScreen::run()
|
|||
break;
|
||||
}
|
||||
|
||||
case MappingNotify: {
|
||||
// keyboard mapping changed
|
||||
CDisplayLock display(this);
|
||||
XRefreshKeyboardMapping(&xevent.xmapping);
|
||||
break;
|
||||
}
|
||||
|
||||
case KeyPress: {
|
||||
log((CLOG_DEBUG "event: KeyPress code=%d, state=0x%04x", xevent.xkey.keycode, xevent.xkey.state));
|
||||
const KeyModifierMask mask = mapModifier(xevent.xkey.state);
|
||||
const KeyID key = mapKey(xevent.xkey.keycode, mask);
|
||||
const KeyID key = mapKey(&xevent.xkey);
|
||||
if (key != kKeyNone) {
|
||||
m_server->onKeyDown(key, mask);
|
||||
}
|
||||
|
|
@ -55,7 +63,7 @@ void CXWindowsPrimaryScreen::run()
|
|||
case KeyRelease: {
|
||||
log((CLOG_DEBUG "event: KeyRelease code=%d, state=0x%04x", xevent.xkey.keycode, xevent.xkey.state));
|
||||
const KeyModifierMask mask = mapModifier(xevent.xkey.state);
|
||||
const KeyID key = mapKey(xevent.xkey.keycode, mask);
|
||||
const KeyID key = mapKey(&xevent.xkey);
|
||||
if (key != kKeyNone) {
|
||||
m_server->onKeyUp(key, mask);
|
||||
}
|
||||
|
|
@ -406,33 +414,31 @@ KeyModifierMask CXWindowsPrimaryScreen::mapModifier(
|
|||
{
|
||||
// FIXME -- should be configurable
|
||||
KeyModifierMask mask = 0;
|
||||
if (state & 1)
|
||||
if (state & ShiftMask)
|
||||
mask |= KeyModifierShift;
|
||||
if (state & 2)
|
||||
if (state & LockMask)
|
||||
mask |= KeyModifierCapsLock;
|
||||
if (state & 4)
|
||||
if (state & ControlMask)
|
||||
mask |= KeyModifierControl;
|
||||
if (state & 8)
|
||||
if (state & Mod1Mask)
|
||||
mask |= KeyModifierAlt;
|
||||
if (state & 16)
|
||||
if (state & Mod2Mask)
|
||||
mask |= KeyModifierNumLock;
|
||||
if (state & 32)
|
||||
if (state & Mod4Mask)
|
||||
mask |= KeyModifierMeta;
|
||||
if (state & 128)
|
||||
if (state & Mod5Mask)
|
||||
mask |= KeyModifierScrollLock;
|
||||
return mask;
|
||||
}
|
||||
|
||||
KeyID CXWindowsPrimaryScreen::mapKey(
|
||||
KeyCode keycode, KeyModifierMask mask) const
|
||||
KeyID CXWindowsPrimaryScreen::mapKey(XKeyEvent* event) const
|
||||
{
|
||||
int index;
|
||||
if (mask & KeyModifierShift)
|
||||
index = 1;
|
||||
else
|
||||
index = 0;
|
||||
KeySym keysym;
|
||||
char dummy[1];
|
||||
|
||||
CDisplayLock display(this);
|
||||
return static_cast<KeyID>(XKeycodeToKeysym(display, keycode, index));
|
||||
XLookupString(event, dummy, 0, &keysym, NULL);
|
||||
return static_cast<KeyID>(keysym);
|
||||
}
|
||||
|
||||
ButtonID CXWindowsPrimaryScreen::mapButton(
|
||||
|
|
|
|||
|
|
@ -36,7 +36,7 @@ class CXWindowsPrimaryScreen : public CXWindowsScreen, public IPrimaryScreen {
|
|||
SInt32 xAbsolute, SInt32 yAbsolute);
|
||||
|
||||
KeyModifierMask mapModifier(unsigned int state) const;
|
||||
KeyID mapKey(KeyCode, KeyModifierMask) const;
|
||||
KeyID mapKey(XKeyEvent*) const;
|
||||
ButtonID mapButton(unsigned int button) const;
|
||||
|
||||
private:
|
||||
|
|
|
|||
|
|
@ -6,7 +6,7 @@
|
|||
// type to hold a key identifier
|
||||
typedef UInt32 KeyID;
|
||||
|
||||
// type to hold bitmask of key modifiers (i.e. shift keys)
|
||||
// type to hold bitmask of key modifiers (e.g. shift keys)
|
||||
typedef UInt32 KeyModifierMask;
|
||||
|
||||
// key codes
|
||||
|
|
|
|||
Loading…
Reference in New Issue