2
* Copyright (C) 2010 Andriy Rysin (rysin@kde.org)
4
* This program is free software; you can redistribute it and/or modify
5
* it under the terms of the GNU General Public License as published by
6
* the Free Software Foundation; either version 2 of the License, or
7
* (at your option) any later version.
9
* This program is distributed in the hope that it will be useful,
10
* but WITHOUT ANY WARRANTY; without even the implied warranty of
11
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12
* GNU General Public License for more details.
14
* You should have received a copy of the GNU General Public License
15
* along with this program; if not, write to the Free Software
16
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19
#include "x11_helper.h"
21
#include <kapplication.h>
24
#include <QtGui/QX11Info>
28
#include <X11/Xatom.h>
29
#include <X11/XKBlib.h>
30
#include <X11/extensions/XKBrules.h>
34
// more information about the limit https://bugs.freedesktop.org/show_bug.cgi?id=19501
35
int X11Helper::MAX_GROUP_COUNT = 4;
36
const char* X11Helper::LEFT_VARIANT_STR = "(";
37
const char* X11Helper::RIGHT_VARIANT_STR = ")";
39
bool X11Helper::xkbSupported(int* xkbOpcode)
41
// Verify the Xlib has matching XKB extension.
43
int major = XkbMajorVersion;
44
int minor = XkbMinorVersion;
46
if (!XkbLibraryVersion(&major, &minor))
48
kWarning() << "Xlib XKB extension " << major << '.' << minor <<
49
" != " << XkbMajorVersion << '.' << XkbMinorVersion;
53
// Verify the X server has matching XKB extension.
58
if( ! XkbQueryExtension(QX11Info::display(), &opcode_rtrn, &xkb_opcode, &error_rtrn, &major, &minor)) {
59
kWarning() << "X server XKB extension " << major << '.' << minor <<
60
" != " << XkbMajorVersion << '.' << XkbMinorVersion;
64
if( xkbOpcode != NULL ) {
65
*xkbOpcode = xkb_opcode;
71
void X11Helper::switchToNextLayout()
73
int size = getLayoutsList().size(); //TODO: could optimize a bit as we don't need the layouts - just count
74
int group = (X11Helper::getGroup() + 1) % size;
75
X11Helper::setGroup(group);
78
void X11Helper::scrollLayouts(int delta)
80
int size = getLayoutsList().size(); //TODO: could optimize a bit as we don't need the layouts - just count
81
int group = X11Helper::getGroup() + delta;
82
group = group < 0 ? size - ((-group) % size) : group % size;
84
X11Helper::setGroup(group);
87
QStringList X11Helper::getLayoutsListAsString(const QList<LayoutUnit>& layoutsList)
89
QStringList stringList;
90
foreach(const LayoutUnit& layoutUnit, layoutsList) {
91
stringList << layoutUnit.toString();
96
bool X11Helper::setLayout(const LayoutUnit& layout)
98
QList<LayoutUnit> currentLayouts = getLayoutsList();
99
int idx = currentLayouts.indexOf(layout);
100
if( idx == -1 || idx >= X11Helper::MAX_GROUP_COUNT ) {
101
kWarning() << "Layout" << layout.toString() << "is not found in current layout list"
102
<< getLayoutsListAsString(currentLayouts);
106
return X11Helper::setGroup((unsigned int)idx);
109
bool X11Helper::setDefaultLayout() {
110
return X11Helper::setGroup(0);
113
bool X11Helper::isDefaultLayout() {
114
return X11Helper::getGroup() == 0;
117
LayoutUnit X11Helper::getCurrentLayout()
119
QList<LayoutUnit> currentLayouts = getLayoutsList();
120
unsigned int group = X11Helper::getGroup();
121
if( group < (unsigned int)currentLayouts.size() )
122
return currentLayouts[group];
124
kWarning() << "Current group number" << group << "is outside of current layout list" <<
125
getLayoutsListAsString(currentLayouts);
129
LayoutSet X11Helper::getCurrentLayouts()
133
QList<LayoutUnit> currentLayouts = getLayoutsList();
134
layoutSet.layouts = currentLayouts;
136
unsigned int group = X11Helper::getGroup();
137
if( group < (unsigned int)currentLayouts.size() ) {
138
layoutSet.currentLayout = currentLayouts[group];
141
kWarning() << "Current group number" << group << "is outside of current layout list" << getLayoutsListAsString(currentLayouts);
142
layoutSet.currentLayout = LayoutUnit();
149
//static QString addNum(const QString& str, int n)
151
// QString format("%1%2");
152
// if( str.length() >= 3 ) return format.arg(str.left(2)).arg(n);
153
// return format.arg(str).arg(n);
156
QList<LayoutUnit> X11Helper::getLayoutsList()
159
QList<LayoutUnit> layouts;
160
if( X11Helper::getGroupNames(QX11Info::display(), &xkbConfig, X11Helper::LAYOUTS_ONLY) ) {
161
for(int i=0; i<xkbConfig.layouts.size(); i++) {
162
QString layout(xkbConfig.layouts[i]);
164
if( i<xkbConfig.variants.size() && ! xkbConfig.variants[i].isEmpty() ) {
165
variant = xkbConfig.variants[i];
167
layouts << LayoutUnit(layout, variant);
169
// if there are layouts with same map name add numbers to display name
170
// for(int i=0; i<layouts.length(); i++) {
172
// for(int j=i+1; j<layouts.length(); j++) {
173
// if( layouts[i].layout == layouts[j].layout && layouts[i].getRawDisplayName().isEmpty() ) {
174
// layouts[i].setDisplayName( addNum(layouts[i].layout, 1) );
175
// layouts[j].setDisplayName( addNum(layouts[j].layout, ++n) );
176
// qDebug() << "Adding" << 1 << "to" << layouts[i].toString();
177
// qDebug() << "Adding" << n << "to" << layouts[j].toString();
183
kWarning() << "Failed to get layout groups from X server";
188
bool X11Helper::setGroup(unsigned int group)
190
return XkbLockGroup(QX11Info::display(), XkbUseCoreKbd, group);
193
unsigned int X11Helper::getGroup()
195
XkbStateRec xkbState;
196
XkbGetState( QX11Info::display(), XkbUseCoreKbd, &xkbState );
197
return xkbState.group;
200
bool X11Helper::getGroupNames(Display* display, XkbConfig* xkbConfig, FetchType fetchType)
202
static const char* OPTIONS_SEPARATOR = ",";
206
unsigned long nitems, extra_bytes;
207
char *prop_data = NULL;
210
Atom rules_atom = XInternAtom(display, _XKB_RF_NAMES_PROP_ATOM, False);
213
if (rules_atom == None) { /* property cannot exist */
214
kWarning() << "Failed to fetch layouts from server:" << "could not find the atom" << _XKB_RF_NAMES_PROP_ATOM;
218
ret = XGetWindowProperty(display,
219
DefaultRootWindow(display),
220
rules_atom, 0L, _XKB_RF_NAMES_PROP_MAXLEN,
221
False, XA_STRING, &real_prop_type, &fmt,
222
&nitems, &extra_bytes,
223
(unsigned char **) (void *) &prop_data);
225
/* property not found! */
226
if (ret != Success) {
227
kWarning() << "Failed to fetch layouts from server:" << "Could not get the property";
231
/* has to be array of strings */
232
if ((extra_bytes > 0) || (real_prop_type != XA_STRING) || (fmt != 8)) {
235
kWarning() << "Failed to fetch layouts from server:" << "Wrong property format";
239
// qDebug() << "prop_data:" << nitems << prop_data;
241
for(char* p=prop_data; p-prop_data < (long)nitems && p != NULL; p += strlen(p)+1) {
243
// kDebug() << " " << p;
246
if( names.count() < 4 ) { //{ rules, model, layouts, variants, options }
251
if( fetchType == ALL || fetchType == LAYOUTS_ONLY ) {
252
QStringList layouts = names[2].split(OPTIONS_SEPARATOR);
253
QStringList variants = names[3].split(OPTIONS_SEPARATOR);
255
for(int ii=0; ii<layouts.count(); ii++) {
256
xkbConfig->layouts << (layouts[ii] != NULL ? layouts[ii] : "");
257
xkbConfig->variants << (ii < variants.count() && variants[ii] != NULL ? variants[ii] : "");
259
kDebug() << "Fetched layout groups from X server:"
260
<< "\tlayouts:" << xkbConfig->layouts
261
<< "\tvariants:" << xkbConfig->variants;
264
if( fetchType == ALL || fetchType == MODEL_ONLY ) {
265
xkbConfig->keyboardModel = (names[1] != NULL ? names[1] : "");
266
kDebug() << "Fetched keyboard model from X server:" << xkbConfig->keyboardModel;
269
if( fetchType == ALL ) {
270
if( names.count() >= 5 ) {
271
QString options = (names[4] != NULL ? names[4] : "");
272
xkbConfig->options = options.split(OPTIONS_SEPARATOR);
273
kDebug() << "Fetched xkbOptions from X server:" << options;
281
XEventNotifier::XEventNotifier(QWidget* parent):
285
if( KApplication::kApplication() == NULL ) {
286
kWarning() << "Layout Widget won't work properly without KApplication instance";
290
void XEventNotifier::start()
292
if( KApplication::kApplication() != NULL && X11Helper::xkbSupported(&xkbOpcode) ) {
293
registerForXkbEvents(QX11Info::display());
295
// start the event loop
296
KApplication::kApplication()->installX11EventFilter(this);
300
void XEventNotifier::stop()
302
if( KApplication::kApplication() != NULL ) {
304
// XEventNotifier::unregisterForXkbEvents(QX11Info::display());
306
// stop the event loop
307
KApplication::kApplication()->removeX11EventFilter(this);
311
bool XEventNotifier::isXkbEvent(XEvent* event)
313
return event->type == xkbOpcode;
316
bool XEventNotifier::processOtherEvents(XEvent* /*event*/)
321
bool XEventNotifier::processXkbEvents(XEvent* event)
323
if( XEventNotifier::isGroupSwitchEvent(event) ) {
324
emit(layoutChanged());
326
else if( XEventNotifier::isLayoutSwitchEvent(event) ) {
327
emit(layoutMapChanged());
332
bool XEventNotifier::x11Event(XEvent * event)
334
// qApp->x11ProcessEvent ( event );
335
if( isXkbEvent(event) ) {
336
processXkbEvents(event);
339
processOtherEvents(event);
341
return QWidget::x11Event(event);
344
bool XEventNotifier::isGroupSwitchEvent(XEvent* event)
346
XkbEvent *xkbEvent = (XkbEvent*) event;
347
#define GROUP_CHANGE_MASK \
348
( XkbGroupStateMask | XkbGroupBaseMask | XkbGroupLatchMask | XkbGroupLockMask )
350
return xkbEvent->any.xkb_type == XkbStateNotify && xkbEvent->state.changed & GROUP_CHANGE_MASK;
353
bool XEventNotifier::isLayoutSwitchEvent(XEvent* event)
355
XkbEvent *xkbEvent = (XkbEvent*) event;
357
return //( (xkbEvent->any.xkb_type == XkbMapNotify) && (xkbEvent->map.changed & XkbKeySymsMask) ) ||
358
/* || ( (xkbEvent->any.xkb_type == XkbNamesNotify) && (xkbEvent->names.changed & XkbGroupNamesMask) || )*/
359
(xkbEvent->any.xkb_type == XkbNewKeyboardNotify);
362
int XEventNotifier::registerForXkbEvents(Display* display)
364
int eventMask = XkbNewKeyboardNotifyMask | XkbStateNotifyMask;
365
if( ! XkbSelectEvents(display, XkbUseCoreKbd, eventMask, eventMask) ) {
366
kWarning() << "Couldn't select desired XKB events";
373
static const char* LAYOUT_VARIANT_SEPARATOR_PREFIX = "(";
374
static const char* LAYOUT_VARIANT_SEPARATOR_SUFFIX = ")";
376
static QString& stripVariantName(QString& variant)
378
if( variant.endsWith(LAYOUT_VARIANT_SEPARATOR_SUFFIX) ) {
379
int suffixLen = strlen(LAYOUT_VARIANT_SEPARATOR_SUFFIX);
380
return variant.remove(variant.length()-suffixLen, suffixLen);
385
LayoutUnit::LayoutUnit(const QString& fullLayoutName)
387
QStringList lv = fullLayoutName.split(LAYOUT_VARIANT_SEPARATOR_PREFIX);
389
variant = lv.size() > 1 ? stripVariantName(lv[1]) : "";
392
QString LayoutUnit::toString() const
394
if( variant.isEmpty() )
397
return layout + LAYOUT_VARIANT_SEPARATOR_PREFIX+variant+LAYOUT_VARIANT_SEPARATOR_SUFFIX;
400
const int LayoutUnit::MAX_LABEL_LENGTH = 3;