436 lines
12 KiB
C++
436 lines
12 KiB
C++
// xkeyboard.cpp
|
|
// Implementation of a class to get keyboard layout information and change layouts
|
|
// Copyright (C) 2008 by Jay Bromley <jbromley@gmail.com>
|
|
//
|
|
// This program is free software; you can redistribute it and/or modify it
|
|
// under the terms of the GNU General Public License as published by the Free
|
|
// Software Foundation; either version 2 of the License, or (at your option)
|
|
// any later version.
|
|
//
|
|
// $Id: XKeyboard.cpp 53 2008-07-18 08:38:47Z jay $
|
|
//
|
|
// 2010-01-02 Kristian Setälä added code to retrieve layout variant information
|
|
|
|
#include "XKeyboard.h"
|
|
#include "X11Exception.h"
|
|
#include <algorithm>
|
|
#include <cstdlib>
|
|
#include <cctype>
|
|
#include <cstring>
|
|
#include <X11/XKBlib.h>
|
|
|
|
// XKeyboard -----------------------------------------------------------
|
|
|
|
XKeyboard::XKeyboard()
|
|
: _display(0), _groupCount(0), _currentGroupNum(0),
|
|
_deviceId(XkbUseCoreKbd)
|
|
{
|
|
|
|
XkbIgnoreExtension(False);
|
|
|
|
char* displayName = strdup("");
|
|
int eventCode;
|
|
int errorReturn;
|
|
int major = XkbMajorVersion;
|
|
int minor = XkbMinorVersion;;
|
|
int reasonReturn;
|
|
_display = XkbOpenDisplay(displayName, &eventCode, &errorReturn, &major,
|
|
&minor, &reasonReturn);
|
|
switch (reasonReturn) {
|
|
case XkbOD_BadLibraryVersion:
|
|
throw X11Exception("Bad XKB library version.");
|
|
break;
|
|
case XkbOD_ConnectionRefused:
|
|
throw X11Exception("Connection to X server refused.");
|
|
break;
|
|
case XkbOD_BadServerVersion:
|
|
throw X11Exception("Bad X11 server version.");
|
|
break;
|
|
case XkbOD_NonXkbServer:
|
|
throw X11Exception("XKB not present.");
|
|
break;
|
|
case XkbOD_Success:
|
|
break;
|
|
}
|
|
|
|
if (initializeXkb() != True) {
|
|
throw X11Exception("XKB not initialized.");
|
|
}
|
|
|
|
XkbSelectEventDetails(_display, XkbUseCoreKbd, XkbStateNotify,
|
|
XkbAllStateComponentsMask, XkbGroupStateMask);
|
|
|
|
XkbStateRec xkbState;
|
|
XkbGetState(_display, _deviceId, &xkbState);
|
|
_currentGroupNum = (_currentGroupNum != xkbState.group) ? xkbState.group : _currentGroupNum;
|
|
accomodateGroupXkb();
|
|
}
|
|
|
|
Bool XKeyboard::initializeXkb()
|
|
{
|
|
// Initialize the XKB extension.
|
|
int major = XkbMajorVersion;
|
|
int minor = XkbMinorVersion;
|
|
int opCode;
|
|
/*Bool status =*/ XkbQueryExtension(_display, &opCode, &_baseEventCode, &_baseErrorCode, &major, &minor);
|
|
|
|
XkbDescRec* kbdDescPtr = XkbAllocKeyboard();
|
|
if (kbdDescPtr == NULL) {
|
|
std::cerr << "Failed to get keyboard description." << std::endl;
|
|
return False;
|
|
}
|
|
|
|
kbdDescPtr->dpy = _display;
|
|
if (_deviceId != XkbUseCoreKbd) {
|
|
kbdDescPtr->device_spec = _deviceId;
|
|
}
|
|
|
|
XkbGetControls(_display, XkbAllControlsMask, kbdDescPtr);
|
|
XkbGetNames(_display, XkbSymbolsNameMask, kbdDescPtr);
|
|
XkbGetNames(_display, XkbGroupNamesMask, kbdDescPtr);
|
|
|
|
if (kbdDescPtr->names == NULL) {
|
|
std::cerr << "Failed to get keyboard description." << std::endl;
|
|
return False;
|
|
}
|
|
|
|
// Count the number of configured groups.
|
|
const Atom* groupSource = kbdDescPtr->names->groups;
|
|
if (kbdDescPtr->ctrls != NULL) {
|
|
_groupCount = kbdDescPtr->ctrls->num_groups;
|
|
} else {
|
|
_groupCount = 0;
|
|
while (_groupCount < XkbNumKbdGroups &&
|
|
groupSource[_groupCount] != None) {
|
|
_groupCount++;
|
|
}
|
|
}
|
|
|
|
// There is always at least one group.
|
|
if (_groupCount == 0) {
|
|
_groupCount = 1;
|
|
}
|
|
|
|
// Get the group names.
|
|
const Atom* tmpGroupSource = kbdDescPtr->names->groups;
|
|
Atom curGroupAtom;
|
|
std::string groupName;
|
|
for (int i = 0; i < _groupCount; i++) {
|
|
if ((curGroupAtom = tmpGroupSource[i]) != None) {
|
|
char* groupNameC = XGetAtomName(_display, curGroupAtom);
|
|
if (groupNameC == NULL) {
|
|
_groupNames.push_back("");
|
|
} else {
|
|
groupName = groupNameC;
|
|
std::string::size_type pos = groupName.find('(', 0);
|
|
if (pos != std::string::npos) {
|
|
groupName = groupName.substr(0, pos - 1);
|
|
}
|
|
_groupNames.push_back(groupName);
|
|
}
|
|
XFree(groupNameC);
|
|
}
|
|
}
|
|
|
|
// Get the symbol name and parse it for layout symbols.
|
|
Atom symNameAtom = kbdDescPtr->names->symbols;
|
|
std::string symName;
|
|
if (symNameAtom != None) {
|
|
char* symNameC = XGetAtomName(_display, symNameAtom);
|
|
symName = symNameC;
|
|
XFree(symNameC);
|
|
if (symName.empty()) {
|
|
return False;
|
|
}
|
|
} else {
|
|
return False;
|
|
}
|
|
|
|
XkbSymbolParser symParser;
|
|
symParser.parse(symName, _symbolNames, _variantNames);
|
|
int count = _symbolNames.size();
|
|
if (count == 1 && _groupNames[0].empty() && _symbolNames[0] == "jp") {
|
|
_groupCount = 2;
|
|
_symbolNames[1] = _symbolNames[0];
|
|
_symbolNames[0] = "us";
|
|
_groupNames[0] = "US/ASCII";
|
|
_groupNames[1] = "Japanese";
|
|
} else {
|
|
if (count < _groupCount) {
|
|
int j = count;
|
|
int k = _groupCount;
|
|
while (--j >= 0) _symbolNames[--k] = _symbolNames[j];
|
|
while (--k >= 0) _symbolNames[k] = "en_US";
|
|
}
|
|
}
|
|
|
|
count = _groupNames.size();
|
|
for (int i = 0; i < count; i++) {
|
|
if (_groupNames[i].empty()) {
|
|
std::string name = getSymbolNameByResNum(i);
|
|
if (name.empty()) {
|
|
name = "U/A";
|
|
}
|
|
std::cerr << "Group Name " << i + 1 << " is undefined, set to '"
|
|
<< name << "'!\n";
|
|
_groupNames[i] = name;
|
|
}
|
|
}
|
|
|
|
XkbStateRec xkbState;
|
|
XkbGetState(_display, _deviceId, &xkbState);
|
|
_currentGroupNum = xkbState.group;
|
|
|
|
return True;
|
|
}
|
|
|
|
std::string XKeyboard::getSymbolNameByResNum(int groupResNum)
|
|
{
|
|
return _symbolNames[groupNumResToXkb(groupResNum)];
|
|
}
|
|
|
|
std::string XKeyboard::getGroupNameByResNum(int groupResNum)
|
|
{
|
|
return _groupNames[groupNumResToXkb(groupResNum)];
|
|
}
|
|
|
|
int XKeyboard::groupNumResToXkb(int groupResNum)
|
|
{
|
|
return groupLookup(groupResNum, _groupNames, _symbolNames, _groupCount);
|
|
}
|
|
|
|
int XKeyboard::groupLookup(int srcValue, StringVector fromText, StringVector toText, int count)
|
|
{
|
|
const std::string srcText = fromText[srcValue];
|
|
|
|
if (!srcText.empty()) {
|
|
std::string targetText;
|
|
|
|
for (int i = 0; i < count; i++) {
|
|
targetText = toText[i];
|
|
if (compareNoCase(srcText, targetText) == 0) {
|
|
srcValue = i;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return srcValue;
|
|
}
|
|
|
|
void XKeyboard::accomodateGroupXkb()
|
|
{
|
|
XkbStateRec state;
|
|
XkbGetState(_display, _deviceId, &state);
|
|
_currentGroupNum = state.group;
|
|
}
|
|
|
|
|
|
XKeyboard::~XKeyboard()
|
|
{
|
|
XCloseDisplay(_display);
|
|
_display = NULL;
|
|
}
|
|
|
|
int XKeyboard::groupCount() const
|
|
{
|
|
return _groupCount;
|
|
}
|
|
|
|
StringVector XKeyboard::groupNames() const
|
|
{
|
|
return _groupNames;
|
|
}
|
|
|
|
StringVector XKeyboard::groupSymbols() const
|
|
{
|
|
return _symbolNames;
|
|
}
|
|
|
|
StringVector XKeyboard::groupVariants() const
|
|
{
|
|
return _variantNames;
|
|
}
|
|
|
|
int XKeyboard::currentGroupNum() const
|
|
{
|
|
XkbStateRec xkbState;
|
|
XkbGetState(_display, _deviceId, &xkbState);
|
|
return static_cast<int>(xkbState.group);
|
|
}
|
|
|
|
std::string XKeyboard::currentGroupName() const
|
|
{
|
|
return _groupNames[currentGroupNum()];
|
|
}
|
|
|
|
std::string XKeyboard::currentGroupSymbol() const
|
|
{
|
|
return _symbolNames[currentGroupNum()];
|
|
}
|
|
|
|
std::string XKeyboard::currentGroupVariant() const
|
|
{
|
|
return _variantNames[currentGroupNum()];
|
|
}
|
|
|
|
bool XKeyboard::setGroupByNum(int groupNum)
|
|
{
|
|
if (_groupCount <= 1) {
|
|
return false;
|
|
}
|
|
|
|
Bool result = XkbLockGroup(_display, _deviceId, groupNum);
|
|
if (result == False) {
|
|
return false;
|
|
}
|
|
accomodateGroupXkb();
|
|
return true;
|
|
}
|
|
|
|
bool XKeyboard::changeGroup(int increment)
|
|
{
|
|
Bool result = XkbLockGroup(_display, _deviceId,
|
|
(_currentGroupNum + increment) % _groupCount);
|
|
if (result == False) {
|
|
return false;
|
|
}
|
|
accomodateGroupXkb();
|
|
return true;
|
|
}
|
|
|
|
|
|
// XkbSymbolParser -----------------------------------------------------
|
|
|
|
XkbSymbolParser::XkbSymbolParser()
|
|
{
|
|
_nonSymbols.push_back("group");
|
|
_nonSymbols.push_back("inet");
|
|
_nonSymbols.push_back("pc");
|
|
}
|
|
|
|
XkbSymbolParser::~XkbSymbolParser()
|
|
{
|
|
_nonSymbols.clear();
|
|
}
|
|
|
|
void XkbSymbolParser::parse(const std::string& symbols, StringVector& symbolList,
|
|
StringVector& variantList)
|
|
{
|
|
bool inSymbol = false;
|
|
std::string curSymbol;
|
|
std::string curVariant;
|
|
|
|
//std::cout << symbols << std::endl;
|
|
// A sample line:
|
|
// pc+fi(dvorak)+fi:2+ru:3+inet(evdev)+group(menu_toggle)
|
|
|
|
for (size_t i = 0; i < symbols.size(); i++) {
|
|
char ch = symbols[i];
|
|
if (ch == '+' || ch == '_') {
|
|
if (inSymbol) {
|
|
if (isXkbLayoutSymbol(curSymbol)) {
|
|
symbolList.push_back(curSymbol);
|
|
variantList.push_back(curVariant);
|
|
}
|
|
curSymbol.clear();
|
|
curVariant.clear();
|
|
} else {
|
|
inSymbol = true;
|
|
}
|
|
} else if (inSymbol && (isalpha(static_cast<int>(ch)) || ch == '_')) {
|
|
curSymbol.append(1, ch);
|
|
} else if (inSymbol && ch == '(') {
|
|
while (++i < symbols.size()) {
|
|
ch = symbols[i];
|
|
if (ch == ')')
|
|
break;
|
|
else
|
|
curVariant.append(1, ch);
|
|
}
|
|
} else {
|
|
if (inSymbol) {
|
|
if (isXkbLayoutSymbol(curSymbol)) {
|
|
symbolList.push_back(curSymbol);
|
|
variantList.push_back(curVariant);
|
|
}
|
|
curSymbol.clear();
|
|
curVariant.clear();
|
|
inSymbol = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (inSymbol && !curSymbol.empty() && isXkbLayoutSymbol(curSymbol)) {
|
|
symbolList.push_back(curSymbol);
|
|
variantList.push_back(curVariant);
|
|
}
|
|
}
|
|
|
|
bool XkbSymbolParser::isXkbLayoutSymbol(const std::string& symbol) {
|
|
StringVectorIter result = find(_nonSymbols.begin(), _nonSymbols.end(), symbol);
|
|
return result == _nonSymbols.end();
|
|
}
|
|
|
|
// Helper functions ----------------------------------------------------
|
|
|
|
int compareNoCase(const std::string& s1, const std::string& s2)
|
|
{
|
|
std::string::const_iterator it1 = s1.begin();
|
|
std::string::const_iterator it2 = s2.begin();
|
|
|
|
//Has the end of at least one of the strings been reached?
|
|
while (it1 != s1.end() && it2 != s2.end()) {
|
|
// Do the letters differ?
|
|
if (::toupper(*it1) != ::toupper(*it2)) {
|
|
// return -1 to indicate 'smaller than', 1 otherwise
|
|
return (::toupper(*it1) < ::toupper(*it2)) ? -1 : 1;
|
|
}
|
|
|
|
// Proceed to the next character in each string.
|
|
++it1;
|
|
++it2;
|
|
}
|
|
|
|
size_t size1 = s1.size();
|
|
size_t size2 = s2.size();
|
|
|
|
// Return -1, 0 or 1 according to strings' lengths.
|
|
if (size1 == size2) {
|
|
return 0;
|
|
}
|
|
return (size1 < size2) ? -1 : 1;
|
|
}
|
|
|
|
// std::ostream& operator<<(std::ostream& os, const XKeyboard& xkb)
|
|
// {
|
|
// os << "xkb {\n\t" << xkb.groupCount() << " groups {" << xkb.groupNames()
|
|
// << "},\n\tsymbols {" << xkb.groupSymbols() << "}\n\tcurrent group: "
|
|
// << xkb.currentGroupSymbol() << " - " << xkb.currentGroupName()
|
|
// << " (" << xkb.currentGroupNum() << ")\n}";
|
|
// return os;
|
|
// }
|
|
|
|
// std::ostream& operator<<(std::ostream& os, const StringVector& sv)
|
|
// {
|
|
// for (int i = 0; i < sv.size(); i++) {
|
|
// os << (i == 0 ? "" : ", ") << sv[i];
|
|
// }
|
|
// return os;
|
|
// }
|
|
|
|
// Main entry point (test) ---------------------------------------------
|
|
|
|
// int main(int argc, char** argv)
|
|
// {
|
|
// XKeyboard xkb;
|
|
// std::cout << xkb << std::endl;
|
|
// xkb.changeGroup(1);
|
|
// std::cout << xkb << std::endl;
|
|
// xkb.changeGroup(1);
|
|
// std::cout << xkb << std::endl;
|
|
// xkb.changeGroup(1);
|
|
// std::cout << xkb << std::endl;
|
|
// return EXIT_SUCCESS;
|
|
// }
|