diff options
Diffstat (limited to 'plugins/src/inputmethods/xim/qximinputcontext_x11.cpp')
| -rw-r--r-- | plugins/src/inputmethods/xim/qximinputcontext_x11.cpp | 930 |
1 files changed, 930 insertions, 0 deletions
diff --git a/plugins/src/inputmethods/xim/qximinputcontext_x11.cpp b/plugins/src/inputmethods/xim/qximinputcontext_x11.cpp new file mode 100644 index 0000000..a0438bc --- /dev/null +++ b/plugins/src/inputmethods/xim/qximinputcontext_x11.cpp @@ -0,0 +1,930 @@ +/**************************************************************************** +** $Id: qximinputcontext_x11.cpp,v 1.10 2004/06/22 06:47:27 daisuke Exp $ +** +** Implementation of QXIMInputContext class +** +** Copyright (C) 2000-2003 Trolltech AS. All rights reserved. +** +** This file is part of the input method module of the Qt GUI Toolkit. +** +** This file may be distributed under the terms of the Q Public License +** as defined by Trolltech AS of Norway and appearing in the file +** LICENSE.QPL included in the packaging of this file. +** +** This file may be distributed and/or modified under the terms of the +** GNU General Public License version 2 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. +** +** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition +** licenses for Unix/X11 may use this file in accordance with the Qt Commercial +** License Agreement provided with the Software. +** +** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE +** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. +** +** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for +** information about Qt Commercial License Agreements. +** See http://www.trolltech.com/qpl/ for QPL licensing information. +** See http://www.trolltech.com/gpl/ for GPL licensing information. +** +** Contact info@trolltech.com if any conditions of this licensing are +** not clear to you. +** +**********************************************************************/ + + +#include "qximinputcontext.h" + +const int XKeyPress = KeyPress; +const int XKeyRelease = KeyRelease; +#undef KeyPress +#undef KeyRelease + +#if !defined(QT_NO_IM) + +#include "qplatformdefs.h" + +#include "qapplication.h" +#include "qwidget.h" +#include "qstring.h" +#include "qptrlist.h" +#include "qintdict.h" +#include "qtextcodec.h" + +#include <stdlib.h> +#include <limits.h> + +#if !defined(QT_NO_XIM) + +#define XK_MISCELLANY +#define XK_LATIN1 +#include <X11/keysymdef.h> + +// #define QT_XIM_DEBUG + +// from qapplication_x11.cpp +static XIM qt_xim = 0; +extern XIMStyle qt_xim_style; +extern XIMStyle qt_xim_preferred_style; +extern char *qt_ximServer; +static bool isInitXIM = FALSE; +static QPtrList<QXIMInputContext> *ximContextList = 0; +#endif +extern int qt_ximComposingKeycode; +extern QTextCodec * qt_input_mapper; + + +#if !defined(QT_NO_XIM) + +#if defined(Q_C_CALLBACKS) +extern "C" { +#endif // Q_C_CALLBACKS + +#ifdef USE_X11R6_XIM + static void xim_create_callback(XIM /*im*/, + XPointer /*client_data*/, + XPointer /*call_data*/) + { + // qDebug("xim_create_callback"); + QXIMInputContext::create_xim(); + } + + static void xim_destroy_callback(XIM /*im*/, + XPointer /*client_data*/, + XPointer /*call_data*/) + { + // qDebug("xim_destroy_callback"); + QXIMInputContext::close_xim(); + Display *dpy = QPaintDevice::x11AppDisplay(); + XRegisterIMInstantiateCallback(dpy, 0, 0, 0, + (XIMProc) xim_create_callback, 0); + } + +#endif // USE_X11R6_XIM + +#if defined(Q_C_CALLBACKS) +} +#endif // Q_C_CALLBACKS + +#endif // QT_NO_XIM + +#ifndef QT_NO_XIM + +/* The cache here is needed, as X11 leaks a few kb for every + XFreeFontSet call, so we avoid creating and deletion of fontsets as + much as possible +*/ +static XFontSet fontsetCache[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; +static int fontsetRefCount = 0; + +static const char * const fontsetnames[] = { + "-*-fixed-medium-r-*-*-16-*,-*-*-medium-r-*-*-16-*", + "-*-fixed-medium-i-*-*-16-*,-*-*-medium-i-*-*-16-*", + "-*-fixed-bold-r-*-*-16-*,-*-*-bold-r-*-*-16-*", + "-*-fixed-bold-i-*-*-16-*,-*-*-bold-i-*-*-16-*", + "-*-fixed-medium-r-*-*-24-*,-*-*-medium-r-*-*-24-*", + "-*-fixed-medium-i-*-*-24-*,-*-*-medium-i-*-*-24-*", + "-*-fixed-bold-r-*-*-24-*,-*-*-bold-r-*-*-24-*", + "-*-fixed-bold-i-*-*-24-*,-*-*-bold-i-*-*-24-*" +}; + +static XFontSet getFontSet( const QFont &f ) +{ + int i = 0; + if (f.italic()) + i |= 1; + if (f.bold()) + i |= 2; + + if ( f.pointSize() > 20 ) + i += 4; + + if ( !fontsetCache[i] ) { + Display* dpy = QPaintDevice::x11AppDisplay(); + int missCount; + char** missList; + fontsetCache[i] = XCreateFontSet(dpy, fontsetnames[i], &missList, &missCount, 0); + if(missCount > 0) + XFreeStringList(missList); + if ( !fontsetCache[i] ) { + fontsetCache[i] = XCreateFontSet(dpy, "-*-fixed-*-*-*-*-16-*", &missList, &missCount, 0); + if(missCount > 0) + XFreeStringList(missList); + if ( !fontsetCache[i] ) + fontsetCache[i] = (XFontSet)-1; + } + } + return (fontsetCache[i] == (XFontSet)-1) ? 0 : fontsetCache[i]; +} + + +#ifdef Q_C_CALLBACKS +extern "C" { +#endif // Q_C_CALLBACKS + + // These static functions should be rewritten as member of + // QXIMInputContext + + static int xic_start_callback(XIC, XPointer client_data, XPointer) { + QXIMInputContext *qic = (QXIMInputContext *) client_data; + if (! qic) { +#ifdef QT_XIM_DEBUG + qDebug("compose start: no qic"); +#endif // QT_XIM_DEBUG + + return 0; + } + + qic->resetClientState(); + qic->sendIMEvent( QEvent::IMStart ); + +#ifdef QT_XIM_DEBUG + qDebug("compose start"); +#endif // QT_XIM_DEBUG + + return 0; + } + + static int xic_draw_callback(XIC, XPointer client_data, XPointer call_data) { + QXIMInputContext *qic = (QXIMInputContext *) client_data; + if (! qic) { +#ifdef QT_XIM_DEBUG + qDebug("compose event: invalid compose event %p", qic); +#endif // QT_XIM_DEBUG + + return 0; + } + + bool send_imstart = FALSE; + if( ! qic->isComposing() && qic->hasFocus() ) { + qic->resetClientState(); + send_imstart = TRUE; + } else if ( ! qic->isComposing() || ! qic->hasFocus() ) { +#ifdef QT_XIM_DEBUG + qDebug( "compose event: invalid compose event composing=%d hasFocus=%d", + qic->isComposing(), qic->hasFocus() ); +#endif // QT_XIM_DEBUG + + return 0; + } + + if ( send_imstart ) + qic->sendIMEvent( QEvent::IMStart ); + + XIMPreeditDrawCallbackStruct *drawstruct = + (XIMPreeditDrawCallbackStruct *) call_data; + XIMText *text = (XIMText *) drawstruct->text; + int cursor = drawstruct->caret, sellen = 0; + + if ( ! drawstruct->caret && ! drawstruct->chg_first && + ! drawstruct->chg_length && ! text ) { + if( qic->composingText.isEmpty() ) { +#ifdef QT_XIM_DEBUG + qDebug( "compose emptied" ); +#endif // QT_XIM_DEBUG + // if the composition string has been emptied, we need + // to send an IMEnd event + qic->sendIMEvent( QEvent::IMEnd ); + qic->resetClientState(); + // if the commit string has coming after here, IMStart + // will be sent dynamically + } + return 0; + } + + if (text) { + char *str = 0; + if (text->encoding_is_wchar) { + int l = wcstombs(NULL, text->string.wide_char, text->length); + if (l != -1) { + str = new char[l + 1]; + wcstombs(str, text->string.wide_char, l); + str[l] = 0; + } + } else + str = text->string.multi_byte; + + if (! str) + return 0; + + QString s = QString::fromLocal8Bit(str); + + if (text->encoding_is_wchar) + delete [] str; + + if (drawstruct->chg_length < 0) + qic->composingText.replace(drawstruct->chg_first, UINT_MAX, s); + else + qic->composingText.replace(drawstruct->chg_first, drawstruct->chg_length, s); + + if ( qic->selectedChars.size() < qic->composingText.length() ) { + // expand the selectedChars array if the compose string is longer + uint from = qic->selectedChars.size(); + qic->selectedChars.resize( qic->composingText.length() ); + for ( uint x = from; from < qic->selectedChars.size(); ++x ) + qic->selectedChars[x] = 0; + } + + uint x; + bool *p = qic->selectedChars.data() + drawstruct->chg_first; + // determine if the changed chars are selected based on text->feedback + for ( x = 0; x < s.length(); ++x ) + *p++ = ( text->feedback ? ( text->feedback[x] & XIMReverse ) : 0 ); + + // figure out where the selection starts, and how long it is + p = qic->selectedChars.data(); + bool started = FALSE; + for ( x = 0; x < QMIN(qic->composingText.length(), qic->selectedChars.size()); ++x ) { + if ( started ) { + if ( *p ) ++sellen; + else break; + } else { + if ( *p ) { + cursor = x; + started = TRUE; + sellen = 1; + } + } + ++p; + } + } else { + if (drawstruct->chg_length == 0) + drawstruct->chg_length = -1; + + qic->composingText.remove(drawstruct->chg_first, drawstruct->chg_length); + bool qt_compose_emptied = qic->composingText.isEmpty(); + if ( qt_compose_emptied ) { +#ifdef QT_XIM_DEBUG + qDebug( "compose emptied" ); +#endif // QT_XIM_DEBUG + // if the composition string has been emptied, we need + // to send an IMEnd event + qic->sendIMEvent( QEvent::IMEnd ); + qic->resetClientState(); + // if the commit string has coming after here, IMStart + // will be sent dynamically + return 0; + } + } + + qic->sendIMEvent( QEvent::IMCompose, + qic->composingText, cursor, sellen ); + + return 0; + } + + static int xic_done_callback(XIC, XPointer client_data, XPointer) { + QXIMInputContext *qic = (QXIMInputContext *) client_data; + if (! qic) + return 0; + + // Don't send IMEnd here. QXIMInputContext::x11FilterEvent() + // handles IMEnd with commit string. +#if 0 + if ( qic->isComposing() ) + qic->sendIMEvent( QEvent::IMEnd ); + qic->resetClientState(); +#endif + + return 0; + } + +#ifdef Q_C_CALLBACKS +} +#endif // Q_C_CALLBACKS + +#endif // !QT_NO_XIM + + + +QXIMInputContext::QXIMInputContext() + : QInputContext(), ic(0), fontset(0) +{ + if(!isInitXIM) + QXIMInputContext::init_xim(); +} + + +void QXIMInputContext::setHolderWidget( QWidget *widget ) +{ + if ( ! widget ) + return; + + QInputContext::setHolderWidget( widget ); + +#if !defined(QT_NO_XIM) + fontsetRefCount++; + if (! qt_xim) { + qWarning("QInputContext: no input method context available"); + return; + } + + if (! widget->isTopLevel()) { + // qWarning("QInputContext: cannot create input context for non-toplevel widgets"); + return; + } + + XPoint spot; + XRectangle rect; + XVaNestedList preedit_attr = 0; + XIMCallback startcallback, drawcallback, donecallback; + + font = widget->font(); + fontset = getFontSet( font ); + + if (qt_xim_style & XIMPreeditArea) { + rect.x = 0; + rect.y = 0; + rect.width = widget->width(); + rect.height = widget->height(); + + preedit_attr = XVaCreateNestedList(0, + XNArea, &rect, + XNFontSet, fontset, + (char *) 0); + } else if (qt_xim_style & XIMPreeditPosition) { + spot.x = 1; + spot.y = 1; + + preedit_attr = XVaCreateNestedList(0, + XNSpotLocation, &spot, + XNFontSet, fontset, + (char *) 0); + } else if (qt_xim_style & XIMPreeditCallbacks) { + startcallback.client_data = (XPointer) this; + startcallback.callback = (XIMProc) xic_start_callback; + drawcallback.client_data = (XPointer) this; + drawcallback.callback = (XIMProc)xic_draw_callback; + donecallback.client_data = (XPointer) this; + donecallback.callback = (XIMProc) xic_done_callback; + + preedit_attr = XVaCreateNestedList(0, + XNPreeditStartCallback, &startcallback, + XNPreeditDrawCallback, &drawcallback, + XNPreeditDoneCallback, &donecallback, + (char *) 0); + } + + if (preedit_attr) { + ic = XCreateIC(qt_xim, + XNInputStyle, qt_xim_style, + XNClientWindow, widget->winId(), + XNPreeditAttributes, preedit_attr, + (char *) 0); + XFree(preedit_attr); + } else + ic = XCreateIC(qt_xim, + XNInputStyle, qt_xim_style, + XNClientWindow, widget->winId(), + (char *) 0); + + if (! ic) + qFatal("Failed to create XIM input context!"); + + // when resetting the input context, preserve the input state + (void) XSetICValues((XIC) ic, XNResetState, XIMPreserveState, (char *) 0); + + if( ! ximContextList ) + ximContextList = new QPtrList<QXIMInputContext>; + ximContextList->append( this ); +#endif // !QT_NO_XIM +} + + +QXIMInputContext::~QXIMInputContext() +{ + +#if !defined(QT_NO_XIM) + if (ic) + XDestroyIC((XIC) ic); + + if ( --fontsetRefCount == 0 ) { + Display *dpy = QPaintDevice::x11AppDisplay(); + for ( int i = 0; i < 8; i++ ) { + if ( fontsetCache[i] && fontsetCache[i] != (XFontSet)-1 ) { + XFreeFontSet(dpy, fontsetCache[i]); + fontsetCache[i] = 0; + } + } + } + + if( ximContextList ) { + ximContextList->remove( this ); + if(ximContextList->isEmpty()) { + // Calling XCloseIM gives a Purify FMR error + // XCloseIM( qt_xim ); + // We prefer a less serious memory leak + if( qt_xim ) { + qt_xim = 0; + isInitXIM = FALSE; + } + + delete ximContextList; + ximContextList = 0; + } + } +#endif // !QT_NO_XIM + + ic = 0; +} + +void QXIMInputContext::init_xim() +{ +#ifndef QT_NO_XIM + if(!isInitXIM) + isInitXIM = TRUE; + + qt_xim = 0; + QString ximServerName(qt_ximServer); + if (qt_ximServer) + ximServerName.prepend("@im="); + else + ximServerName = ""; + + if ( !XSupportsLocale() ) + qWarning("Qt: Locales not supported on X server"); + +#ifdef USE_X11R6_XIM + else if ( XSetLocaleModifiers (ximServerName.ascii()) == 0 ) + qWarning( "Qt: Cannot set locale modifiers: %s", + ximServerName.ascii()); + else { + Display *dpy = QPaintDevice::x11AppDisplay(); + XWindowAttributes attr; // XIM unselects all events on the root window + XGetWindowAttributes( dpy, QPaintDevice::x11AppRootWindow(),&attr ); + XRegisterIMInstantiateCallback(dpy, 0, 0, 0, + (XIMProc) xim_create_callback, 0); + XSelectInput( dpy, QPaintDevice::x11AppRootWindow(), attr.your_event_mask ); + } +#else // !USE_X11R6_XIM + else if ( XSetLocaleModifiers ("") == 0 ) + qWarning("Qt: Cannot set locale modifiers"); + else + QXIMInputContext::create_xim(); +#endif // USE_X11R6_XIM +#endif // QT_NO_XIM +} + + +/*! \internal + Creates the application input method. + */ +void QXIMInputContext::create_xim() +{ +#ifndef QT_NO_XIM + Display *appDpy = QPaintDevice::x11AppDisplay(); + qt_xim = XOpenIM( appDpy, 0, 0, 0 ); + if ( qt_xim ) { + +#ifdef USE_X11R6_XIM + XIMCallback destroy; + destroy.callback = (XIMProc) xim_destroy_callback; + destroy.client_data = 0; + if ( XSetIMValues( qt_xim, XNDestroyCallback, &destroy, (char *) 0 ) != 0 ) + qWarning( "Xlib doesn't support destroy callback"); +#endif // USE_X11R6_XIM + + XIMStyles *styles = 0; + XGetIMValues(qt_xim, XNQueryInputStyle, &styles, (char *) 0, (char *) 0); + if ( styles ) { + int i; + for ( i = 0; !qt_xim_style && i < styles->count_styles; i++ ) { + if ( styles->supported_styles[i] == qt_xim_preferred_style ) { + qt_xim_style = qt_xim_preferred_style; + break; + } + } + // if the preferred input style couldn't be found, look for + // Nothing + for ( i = 0; !qt_xim_style && i < styles->count_styles; i++ ) { + if ( styles->supported_styles[i] == (XIMPreeditNothing | + XIMStatusNothing) ) { + qt_xim_style = XIMPreeditNothing | XIMStatusNothing; + break; + } + } + // ... and failing that, None. + for ( i = 0; !qt_xim_style && i < styles->count_styles; i++ ) { + if ( styles->supported_styles[i] == (XIMPreeditNone | + XIMStatusNone) ) { + qt_xim_style = XIMPreeditNone | XIMStatusNone; + break; + } + } + + // qDebug("QApplication: using im style %lx", qt_xim_style); + XFree( (char *)styles ); + } + + if ( qt_xim_style ) { + +#ifdef USE_X11R6_XIM + XUnregisterIMInstantiateCallback(appDpy, 0, 0, 0, + (XIMProc) xim_create_callback, 0); +#endif // USE_X11R6_XIM + + } else { + // Give up + qWarning( "No supported input style found." + " See InputMethod documentation."); + QXIMInputContext::close_xim(); + } + } +#endif // QT_NO_XIM +} + + +/*! \internal + Closes the application input method. +*/ +void QXIMInputContext::close_xim() +{ +#ifndef QT_NO_XIM + QString errMsg( "QXIMInputContext::close_xim() has been called" ); + + // Calling XCloseIM gives a Purify FMR error + // XCloseIM( qt_xim ); + // We prefer a less serious memory leak + + qt_xim = 0; + if( ximContextList ) { + QPtrList<QXIMInputContext> contexts( *ximContextList ); + QPtrList<QXIMInputContext>::Iterator it = contexts.begin(); + while( it != contexts.end() ) { + (*it)->close( errMsg ); + ++it; + } + // ximContextList will be deleted in ~QXIMInputContext + } +#endif // QT_NO_XIM +} + + +bool QXIMInputContext::x11FilterEvent( QWidget *keywidget, XEvent *event ) +{ +#ifndef QT_NO_XIM + int xkey_keycode = event->xkey.keycode; + if ( XFilterEvent( event, keywidget->topLevelWidget()->winId() ) ) { + qt_ximComposingKeycode = xkey_keycode; // ### not documented in xlib + + // Cancel of the composition is realizable even if + // follwing codes don't exist +#if 0 + if ( event->type != XKeyPress || ! (qt_xim_style & XIMPreeditCallbacks) ) + return TRUE; + + /* + * The Solaris htt input method will transform a ClientMessage + * event into a filtered KeyPress event, in which case our + * keywidget is still zero. + */ + QETWidget *widget = (QETWidget*)QWidget::find( (WId)event->xany.window ); + if ( ! keywidget ) { + keywidget = (QETWidget*)QWidget::keyboardGrabber(); + if ( keywidget ) { + grabbed = TRUE; + } else { + if ( focus_widget ) + keywidget = (QETWidget*)focus_widget; + if ( !keywidget ) { + if ( qApp->inPopupMode() ) // no focus widget, see if we have a popup + keywidget = (QETWidget*) qApp->activePopupWidget(); + else if ( widget ) + keywidget = (QETWidget*)widget->topLevelWidget(); + } + } + } + + /* + if the composition string has been emptied, we need to send + an IMEnd event. however, we have no way to tell if the user + has cancelled input, or if the user has accepted the + composition. + + so, we have to look for the next keypress and see if it is + the 'commit' key press (keycode == 0). if it is, we deliver + an IMEnd event with the final text, otherwise we deliver an + IMEnd with empty text (meaning the user has cancelled the + input). + */ + if ( composing && focusWidget && qt_compose_emptied ) { + XEvent event2; + bool found = FALSE; + if ( XCheckTypedEvent( QPaintDevice::x11AppDisplay(), + XKeyPress, &event2 ) ) { + if ( event2.xkey.keycode == 0 ) { + // found a key event with the 'commit' string + found = TRUE; + XPutBackEvent( QPaintDevice::x11AppDisplay(), &event2 ); + } + } + + if ( !found ) { + // no key event, so the user must have cancelled the composition + QIMEvent endevent( QEvent::IMEnd, QString::null, -1 ); + QApplication::sendEvent( focusWidget, &endevent ); + + focusWidget = 0; + } + + qt_compose_emptied = FALSE; + } +#endif + return TRUE; + } else if ( focusWidget() ) { + if ( event->type == XKeyPress && event->xkey.keycode == 0 ) { + // input method has sent us a commit string + QCString data(513); + KeySym sym; // unused + Status status; // unused + QString inputText; + int count = lookupString( &(event->xkey), data, &sym, &status ); + if ( count > 0 ) + inputText = qt_input_mapper->toUnicode( data, count ); + + if ( ! ( qt_xim_style & XIMPreeditCallbacks ) || ! isComposing() ) { + // there is no composing state + sendIMEvent( QEvent::IMStart ); + } + + sendIMEvent( QEvent::IMEnd, inputText ); + resetClientState(); + + return TRUE; + } + } +#endif // !QT_NO_XIM + + return FALSE; +} + + +void QXIMInputContext::sendIMEvent( QEvent::Type type, const QString &text, + int cursorPosition, int selLength ) +{ + QInputContext::sendIMEvent( type, text, cursorPosition, selLength ); + if ( type == QEvent::IMCompose ) + composingText = text; +} + + +void QXIMInputContext::reset() +{ +#if !defined(QT_NO_XIM) + if ( focusWidget() && isComposing() && ! composingText.isNull() ) { +#ifdef QT_XIM_DEBUG + qDebug("QXIMInputContext::reset: composing - sending IMEnd (empty) to %p", + focusWidget() ); +#endif // QT_XIM_DEBUG + + QInputContext::reset(); + resetClientState(); + + char *mb = XmbResetIC((XIC) ic); + if (mb) + XFree(mb); + } +#endif // !QT_NO_XIM +} + + +void QXIMInputContext::resetClientState() +{ +#if !defined(QT_NO_XIM) + composingText = QString::null; + if ( selectedChars.size() < 128 ) + selectedChars.resize( 128 ); + selectedChars.fill( 0 ); +#endif // !QT_NO_XIM +} + + +void QXIMInputContext::close( const QString &errMsg ) +{ + qDebug( errMsg ); + emit deletionRequested(); +} + + +bool QXIMInputContext::hasFocus() const +{ + return ( focusWidget() != 0 ); +} + + +void QXIMInputContext::setMicroFocus(int x, int y, int, int h, QFont *f) +{ + QWidget *widget = focusWidget(); + if ( qt_xim && widget ) { + QPoint p( x, y ); + QPoint p2 = widget->mapTo( widget->topLevelWidget(), QPoint( 0, 0 ) ); + p = widget->topLevelWidget()->mapFromGlobal( p ); + setXFontSet( f ? *f : widget->font() ); + setComposePosition(p.x(), p.y() + h); + setComposeArea(p2.x(), p2.y(), widget->width(), widget->height()); + } + +} + +void QXIMInputContext::mouseHandler( int , QEvent::Type type, + Qt::ButtonState button, + Qt::ButtonState) +{ + if ( type == QEvent::MouseButtonPress || + type == QEvent::MouseButtonDblClick ) { + // Don't reset Japanese input context here. Japanese input + // context sometimes contains a whole paragraph and has + // minutes of lifetime different to ephemeral one in other + // languages. The input context should be survived until + // focused again. + if ( ! isPreeditPreservationEnabled() ) + reset(); + } +} + +void QXIMInputContext::setComposePosition(int x, int y) +{ +#if !defined(QT_NO_XIM) + if (qt_xim && ic) { + XPoint point; + point.x = x; + point.y = y; + + XVaNestedList preedit_attr = + XVaCreateNestedList(0, + XNSpotLocation, &point, + + (char *) 0); + XSetICValues((XIC) ic, XNPreeditAttributes, preedit_attr, (char *) 0); + XFree(preedit_attr); + } +#endif // !QT_NO_XIM +} + + +void QXIMInputContext::setComposeArea(int x, int y, int w, int h) +{ +#if !defined(QT_NO_XIM) + if (qt_xim && ic) { + XRectangle rect; + rect.x = x; + rect.y = y; + rect.width = w; + rect.height = h; + + XVaNestedList preedit_attr = XVaCreateNestedList(0, + XNArea, &rect, + + (char *) 0); + XSetICValues((XIC) ic, XNPreeditAttributes, preedit_attr, (char *) 0); + XFree(preedit_attr); + } +#endif +} + + +void QXIMInputContext::setXFontSet(const QFont &f) +{ +#if !defined(QT_NO_XIM) + if (font == f) return; // nothing to do + font = f; + + XFontSet fs = getFontSet(font); + if (fontset == fs) return; // nothing to do + fontset = fs; + + XVaNestedList preedit_attr = XVaCreateNestedList(0, XNFontSet, fontset, (char *) 0); + XSetICValues((XIC) ic, XNPreeditAttributes, preedit_attr, (char *) 0); + XFree(preedit_attr); +#else + Q_UNUSED( f ); +#endif +} + + +int QXIMInputContext::lookupString(XKeyEvent *event, QCString &chars, + KeySym *key, Status *status) const +{ + int count = 0; + +#if !defined(QT_NO_XIM) + if (qt_xim && ic) { + count = XmbLookupString((XIC) ic, event, chars.data(), + chars.size(), key, status); + + if ((*status) == XBufferOverflow ) { + chars.resize(count + 1); + count = XmbLookupString((XIC) ic, event, chars.data(), + chars.size(), key, status); + } + } + +#endif // QT_NO_XIM + + return count; +} + +void QXIMInputContext::setFocus() +{ +#if !defined(QT_NO_XIM) + if ( qt_xim && ic ) + XSetICFocus((XIC) ic); +#endif // !QT_NO_XIM +} + +void QXIMInputContext::unsetFocus() +{ +#if !defined(QT_NO_XIM) + if (qt_xim && ic) + XUnsetICFocus((XIC) ic); +#endif // !QT_NO_XIM + + // Don't reset Japanese input context here. Japanese input context + // sometimes contains a whole paragraph and has minutes of + // lifetime different to ephemeral one in other languages. The + // input context should be survived until focused again. + if ( ! isPreeditPreservationEnabled() ) + reset(); +} + + +bool QXIMInputContext::isPreeditRelocationEnabled() +{ + return ( language() == "ja" ); +} + + +bool QXIMInputContext::isPreeditPreservationEnabled() +{ + return ( language() == "ja" ); +} + + +QString QXIMInputContext::identifierName() +{ + // the name should be "xim" rather than "XIM" to be consistent + // with corresponding immodule of GTK+ + return "xim"; +} + + +QString QXIMInputContext::language() +{ +#if !defined(QT_NO_XIM) + if ( qt_xim ) { + QString locale( XLocaleOfIM( qt_xim ) ); + + if ( locale.startsWith( "zh" ) ) { + // Chinese language should be formed as "zh_CN", "zh_TW", "zh_HK" + _language = locale.left( 5 ); + } else { + // other languages should be two-letter ISO 639 language code + _language = locale.left( 2 ); + } + } +#endif + return _language; +} + +#endif //QT_NO_IM |