Original XKeyboard class
This commit is contained in:
Kristian Setälä
commit
430b9daac6
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// X11Exception.h
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// C++ exception that wraps X11 errors.
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// Copyright (C) 2008 Jay Bromley <jbromley@gmail.com>
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//
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// $Id: X11Exception.h 26 2008-04-09 08:47:11Z jay $
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#ifndef X11EXCEPTION_H_FE39A315_6827_447B_AE62_5FA2C3FD391F
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#define X11EXCEPTION_H_FE39A315_6827_447B_AE62_5FA2C3FD391F
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#include <exception>
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class X11Exception : public std::exception
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{
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public:
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X11Exception() : _reason("unknown") {}
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X11Exception(const std::string& what) : _reason(what) {}
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virtual ~X11Exception() throw () {};
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virtual const char* what() const throw () { return _reason.c_str(); }
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private:
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std::string _reason;
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};
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#endif // GAMEEXCEPTION_H_FE39A315_6827_447B_AE62_5FA2C3FD391F
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// Local Variables:
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// mode: c++
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// End:
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// xkeyboard.cpp
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// Implementation of a class to get keyboard layout information and change layouts
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// Copyright (C) 2008 by Jay Bromley <jbromley@gmail.com>
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//
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// This program is free software; you can redistribute it and/or modify it
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// under the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 of the License, or (at your option)
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// any later version.
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//
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// $Id: XKeyboard.cpp 53 2008-07-18 08:38:47Z jay $
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#include "XKeyboard.h"
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#include "X11Exception.h"
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#include <algorithm>
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#include <cstdlib>
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#include <cctype>
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#include <cstring>
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#include <X11/XKBlib.h>
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// XKeyboard -----------------------------------------------------------
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XKeyboard::XKeyboard()
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: _display(0), _groupCount(0), _currentGroupNum(0),
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_deviceId(XkbUseCoreKbd)
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{
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XkbIgnoreExtension(False);
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char* displayName = strdup("");
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int eventCode;
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int errorReturn;
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int major = XkbMajorVersion;
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int minor = XkbMinorVersion;;
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int reasonReturn;
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_display = XkbOpenDisplay(displayName, &eventCode, &errorReturn, &major,
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&minor, &reasonReturn);
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switch (reasonReturn) {
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case XkbOD_BadLibraryVersion:
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throw X11Exception("Bad XKB library version.");
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break;
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case XkbOD_ConnectionRefused:
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throw X11Exception("Connection to X server refused.");
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break;
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case XkbOD_BadServerVersion:
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throw X11Exception("Bad X11 server version.");
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break;
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case XkbOD_NonXkbServer:
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throw X11Exception("XKB not present.");
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break;
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case XkbOD_Success:
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break;
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}
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if (initializeXkb() != True) {
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throw X11Exception("XKB not initialized.");
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}
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XkbSelectEventDetails(_display, XkbUseCoreKbd, XkbStateNotify,
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XkbAllStateComponentsMask, XkbGroupStateMask);
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XkbStateRec xkbState;
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XkbGetState(_display, _deviceId, &xkbState);
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_currentGroupNum = (_currentGroupNum != xkbState.group) ? xkbState.group : _currentGroupNum;
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accomodateGroupXkb();
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}
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Bool XKeyboard::initializeXkb()
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{
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// Initialize the XKB extension.
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int major = XkbMajorVersion;
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int minor = XkbMinorVersion;
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int opCode;
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Bool status = XkbQueryExtension(_display, &opCode, &_baseEventCode, &_baseErrorCode, &major, &minor);
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XkbDescRec* kbdDescPtr = XkbAllocKeyboard();
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if (kbdDescPtr == NULL) {
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std::cerr << "Failed to get keyboard description." << std::endl;
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return False;
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}
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kbdDescPtr->dpy = _display;
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if (_deviceId != XkbUseCoreKbd) {
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kbdDescPtr->device_spec = _deviceId;
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}
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XkbGetControls(_display, XkbAllControlsMask, kbdDescPtr);
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XkbGetNames(_display, XkbSymbolsNameMask, kbdDescPtr);
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XkbGetNames(_display, XkbGroupNamesMask, kbdDescPtr);
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if (kbdDescPtr->names == NULL) {
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std::cerr << "Failed to get keyboard description." << std::endl;
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return False;
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}
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// Count the number of configured groups.
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const Atom* groupSource = kbdDescPtr->names->groups;
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if (kbdDescPtr->ctrls != NULL) {
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_groupCount = kbdDescPtr->ctrls->num_groups;
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} else {
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_groupCount = 0;
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while (_groupCount < XkbNumKbdGroups &&
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groupSource[_groupCount] != None) {
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_groupCount++;
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}
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}
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// There is always at least one group.
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if (_groupCount == 0) {
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_groupCount = 1;
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}
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// Get the group names.
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const Atom* tmpGroupSource = kbdDescPtr->names->groups;
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Atom curGroupAtom;
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std::string groupName;
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for (int i = 0; i < _groupCount; i++) {
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if ((curGroupAtom = tmpGroupSource[i]) != None) {
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char* groupNameC = XGetAtomName(_display, curGroupAtom);
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if (groupNameC == NULL) {
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_groupNames.push_back("");
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} else {
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groupName = groupNameC;
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std::string::size_type pos = groupName.find('(', 0);
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if (pos != std::string::npos) {
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groupName = groupName.substr(0, pos + 1);
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}
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_groupNames.push_back(groupName);
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}
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XFree(groupNameC);
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}
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}
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// Get the symbol name and parse it for layout symbols.
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Atom symNameAtom = kbdDescPtr->names->symbols;
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std::string symName;
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if (symNameAtom != None) {
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char* symNameC = XGetAtomName(_display, symNameAtom);
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symName = symNameC;
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XFree(symNameC);
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if (symName.empty()) {
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return False;
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}
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} else {
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return False;
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}
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XkbSymbolParser symParser;
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symParser.parse(symName, _symbolNames);
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int count = _symbolNames.size();
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if (count == 1 && _groupNames[0].empty() && _symbolNames[0] == "jp") {
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_groupCount = 2;
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_symbolNames[1] = _symbolNames[0];
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_symbolNames[0] = "us";
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_groupNames[0] = "US/ASCII";
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_groupNames[1] = "Japanese";
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} else {
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if (count < _groupCount) {
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int j = count;
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int k = _groupCount;
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while (--j >= 0) _symbolNames[--k] = _symbolNames[j];
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while (--k >= 0) _symbolNames[k] = "en_US";
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}
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}
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count = _groupNames.size();
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for (int i = 0; i < count; i++) {
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if (_groupNames[i].empty()) {
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std::string name = getSymbolNameByResNum(i);
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if (name.empty()) {
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name = "U/A";
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}
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std::cerr << "Group Name " << i + 1 << " is undefined, set to '"
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<< name << "'!\n";
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_groupNames[i] = name;
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}
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}
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XkbStateRec xkbState;
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XkbGetState(_display, _deviceId, &xkbState);
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_currentGroupNum = xkbState.group;
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return True;
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}
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std::string XKeyboard::getSymbolNameByResNum(int groupResNum)
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{
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return _symbolNames[groupNumResToXkb(groupResNum)];
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}
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std::string XKeyboard::getGroupNameByResNum(int groupResNum)
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{
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return _groupNames[groupNumResToXkb(groupResNum)];
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}
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int XKeyboard::groupNumResToXkb(int groupResNum)
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{
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return groupLookup(groupResNum, _groupNames, _symbolNames, _groupCount);
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}
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int XKeyboard::groupLookup(int srcValue, StringVector fromText, StringVector toText, int count)
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{
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const std::string srcText = fromText[srcValue];
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if (!srcText.empty()) {
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std::string targetText;
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for (int i = 0; i < count; i++) {
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targetText = toText[i];
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if (compareNoCase(srcText, targetText) == 0) {
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srcValue = i;
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break;
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}
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}
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}
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return srcValue;
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}
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void XKeyboard::accomodateGroupXkb()
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{
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XkbStateRec state;
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XkbGetState(_display, _deviceId, &state);
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_currentGroupNum = state.group;
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}
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XKeyboard::~XKeyboard()
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{
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XCloseDisplay(_display);
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_display = NULL;
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}
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int XKeyboard::groupCount() const
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{
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return _groupCount;
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}
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StringVector XKeyboard::groupNames() const
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{
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return _groupNames;
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}
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StringVector XKeyboard::groupSymbols() const
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{
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return _symbolNames;
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}
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int XKeyboard::currentGroupNum() const
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{
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XkbStateRec xkbState;
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XkbGetState(_display, _deviceId, &xkbState);
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return static_cast<int>(xkbState.group);
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}
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std::string XKeyboard::currentGroupName() const
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{
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return _groupNames[currentGroupNum()];
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}
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std::string XKeyboard::currentGroupSymbol() const
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{
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return _symbolNames[currentGroupNum()];
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}
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bool XKeyboard::setGroupByNum(int groupNum)
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{
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if (_groupCount <= 1) {
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return false;
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}
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Bool result = XkbLockGroup(_display, _deviceId, groupNum);
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if (result == False) {
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return false;
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}
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accomodateGroupXkb();
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return true;
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}
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bool XKeyboard::changeGroup(int increment)
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{
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Bool result = XkbLockGroup(_display, _deviceId,
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(_currentGroupNum + increment) % _groupCount);
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if (result == False) {
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return false;
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}
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accomodateGroupXkb();
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return true;
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}
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// XkbSymbolParser -----------------------------------------------------
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XkbSymbolParser::XkbSymbolParser()
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{
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_nonSymbols.push_back("group");
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_nonSymbols.push_back("inet");
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_nonSymbols.push_back("pc");
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}
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XkbSymbolParser::~XkbSymbolParser()
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{
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_nonSymbols.clear();
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}
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void XkbSymbolParser::parse(const std::string& symbols, StringVector& symbolList)
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{
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bool inSymbol = false;
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std::string curSymbol;
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for (int i = 0; i < symbols.size(); i++) {
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char ch = symbols[i];
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if (ch == '+') {
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if (inSymbol) {
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if (isXkbLayoutSymbol(curSymbol)) {
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symbolList.push_back(curSymbol);
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}
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curSymbol.clear();
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} else {
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inSymbol = true;
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}
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} else if (inSymbol && (isalpha(static_cast<int>(ch)) || ch == '_')) {
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curSymbol.append(1, ch);
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} else {
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if (inSymbol) {
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if (isXkbLayoutSymbol(curSymbol)) {
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symbolList.push_back(curSymbol);
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}
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curSymbol.clear();
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inSymbol = false;
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}
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}
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}
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if (inSymbol && !curSymbol.empty() && isXkbLayoutSymbol(curSymbol)) {
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symbolList.push_back(curSymbol);
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}
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}
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bool XkbSymbolParser::isXkbLayoutSymbol(const std::string& symbol) {
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StringVectorIter result = find(_nonSymbols.begin(), _nonSymbols.end(), symbol);
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return result == _nonSymbols.end();
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}
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// Helper functions ----------------------------------------------------
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int compareNoCase(const std::string& s1, const std::string& s2)
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{
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std::string::const_iterator it1 = s1.begin();
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std::string::const_iterator it2 = s2.begin();
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//Has the end of at least one of the strings been reached?
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while (it1 != s1.end() && it2 != s2.end()) {
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// Do the letters differ?
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if (::toupper(*it1) != ::toupper(*it2)) {
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// return -1 to indicate 'smaller than', 1 otherwise
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return (::toupper(*it1) < ::toupper(*it2)) ? -1 : 1;
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}
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// Proceed to the next character in each string.
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++it1;
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++it2;
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}
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size_t size1 = s1.size();
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size_t size2 = s2.size();
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// Return -1, 0 or 1 according to strings' lengths.
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if (size1 == size2) {
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return 0;
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}
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return (size1 < size2) ? -1 : 1;
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}
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// std::ostream& operator<<(std::ostream& os, const XKeyboard& xkb)
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// {
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// os << "xkb {\n\t" << xkb.groupCount() << " groups {" << xkb.groupNames()
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// << "},\n\tsymbols {" << xkb.groupSymbols() << "}\n\tcurrent group: "
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// << xkb.currentGroupSymbol() << " - " << xkb.currentGroupName()
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// << " (" << xkb.currentGroupNum() << ")\n}";
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// return os;
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// }
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// std::ostream& operator<<(std::ostream& os, const StringVector& sv)
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// {
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// for (int i = 0; i < sv.size(); i++) {
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// os << (i == 0 ? "" : ", ") << sv[i];
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// }
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// return os;
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// }
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// Main entry point (test) ---------------------------------------------
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// int main(int argc, char** argv)
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// {
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// XKeyboard xkb;
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// std::cout << xkb << std::endl;
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// xkb.changeGroup(1);
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// std::cout << xkb << std::endl;
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// xkb.changeGroup(1);
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// std::cout << xkb << std::endl;
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// xkb.changeGroup(1);
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// std::cout << xkb << std::endl;
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// return EXIT_SUCCESS;
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// }
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@ -0,0 +1,90 @@
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// xkeyboard.h
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// Interface for a class to get keyboard layout information and change layouts
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// Copyright (C) 2008 by Jay Bromley <jbromley@gmail.com>
|
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//
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// 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)
|
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// any later version.
|
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//
|
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// $Id: XKeyboard.h 29 2008-04-09 21:37:44Z jay $
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#ifndef XKEYBOARD_H_1C79861A_49B3_4A95_88D6_455C22FEB222
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#define XKEYBOARD_H_1C79861A_49B3_4A95_88D6_455C22FEB222
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#include <vector>
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#include <string>
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#include <iostream>
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#include <X11/Xlib.h>
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typedef std::vector<std::string> StringVector;
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// XKeyboard -----------------------------------------------------------
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class XKeyboard
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{
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public:
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XKeyboard();
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~XKeyboard();
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int groupCount() const;
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StringVector groupNames() const;
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StringVector groupSymbols() const;
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int currentGroupNum() const;
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std::string currentGroupName() const;
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std::string currentGroupSymbol() const;
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bool setGroupByNum(int groupNum);
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bool changeGroup(int increment);
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//friend std::ostream& operator<<(std::ostream& os, const XKeyboard& xkb);
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private:
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Bool initializeXkb();
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std::string getSymbolNameByResNum(int groupResNum);
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int groupNumResToXkb(int groupNumRes);
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std::string getGroupNameByResNum(int groupResNum);
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int groupLookup(int srcValue, StringVector fromText, StringVector toText, int count);
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void accomodateGroupXkb();
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Display* _display;
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int _groupCount;
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StringVector _groupNames;
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StringVector _symbolNames;
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int _currentGroupNum;
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int _deviceId;
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int _baseEventCode;
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int _baseErrorCode;
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};
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// XkbSymbolParser -----------------------------------------------------
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class XkbSymbolParser
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{
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public:
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typedef std::vector<std::string>::iterator StringVectorIter;
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XkbSymbolParser();
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~XkbSymbolParser();
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void parse(const std::string& symbols, std::vector<std::string>& symbolList);
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private:
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bool isXkbLayoutSymbol(const std::string& symbol);
|
||||
|
||||
StringVector _nonSymbols;
|
||||
};
|
||||
|
||||
|
||||
// Helper functions ----------------------------------------------------
|
||||
|
||||
int compareNoCase(const std::string& s1, const std::string& s2);
|
||||
// std::ostream& operator<<(std::ostream& os, const XKeyboard& xkb);
|
||||
// std::ostream& operator<<(std::ostream& os, const StringVector& v);
|
||||
|
||||
#endif // XKEYBOARD_H_1C79861A_49B3_4A95_88D6_455C22FEB222
|
||||
|
||||
// Local Variables:
|
||||
// mode: c++
|
||||
// End:
|
||||
Loading…
Reference in New Issue