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Diffstat (limited to 'plugins/src/inputmethods/simple/qsimpleinputcontext.cpp')
| -rw-r--r-- | plugins/src/inputmethods/simple/qsimpleinputcontext.cpp | 285 |
1 files changed, 285 insertions, 0 deletions
diff --git a/plugins/src/inputmethods/simple/qsimpleinputcontext.cpp b/plugins/src/inputmethods/simple/qsimpleinputcontext.cpp new file mode 100644 index 0000000..07d6928 --- /dev/null +++ b/plugins/src/inputmethods/simple/qsimpleinputcontext.cpp @@ -0,0 +1,285 @@ +/**************************************************************************** +** $Id$ +** +** Implementation of QSimpleInputContext class +** +** Copyright (C) 2004 immodule for Qt Project. All rights reserved. +** +** This file is written to contribute to Trolltech AS under their own +** licence. You may use this file under your Qt license. Following +** description is copied from their original file headers. Contact +** immodule-qt@freedesktop.org if any conditions of this licensing are +** not clear to you. +** +** +** 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 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 "qsimpleinputcontext.h" + +#include <qnamespace.h> +#include <qevent.h> +#include <qglobal.h> +#include <algorithm> + +static const int ignoreKeys[] = { + Qt::Key_Shift, + Qt::Key_Control, + Qt::Key_Meta, + Qt::Key_Alt, + Qt::Key_CapsLock, + Qt::Key_Super_L, + Qt::Key_Super_R, + Qt::Key_Hyper_L, + Qt::Key_Hyper_R, + Qt::Key_Mode_switch +}; + +static const int composingKeys[] = { + Qt::Key_Multi_key, + Qt::Key_Dead_Grave, + Qt::Key_Dead_Acute, + Qt::Key_Dead_Circumflex, + Qt::Key_Dead_Tilde, + Qt::Key_Dead_Macron, + Qt::Key_Dead_Breve, + Qt::Key_Dead_Abovedot, + Qt::Key_Dead_Diaeresis, + Qt::Key_Dead_Abovering, + Qt::Key_Dead_Doubleacute, + Qt::Key_Dead_Caron, + Qt::Key_Dead_Cedilla, + Qt::Key_Dead_Ogonek, + Qt::Key_Dead_Iota, + Qt::Key_Dead_Voiced_Sound, + Qt::Key_Dead_Semivoiced_Sound, + Qt::Key_Dead_Belowdot, + Qt::Key_Dead_Hook, + Qt::Key_Dead_Horn +}; + +class Cmp +{ +public: + bool operator () (const QComposeTableElement &lhs, const QComposeTableElement &rhs) const { + for ( size_t i=0; i < QT_KEYSEQUENCE_MAX_LEN; i++ ) { + if ( lhs.keys[i] < rhs.keys[i] ) return TRUE; + else + if ( lhs.keys[i] > rhs.keys[i] ) return FALSE; + } + return FALSE; + } + + bool operator () (const QComposeTableElement &lhs, const uint rhs[QT_KEYSEQUENCE_MAX_LEN]) const { + for ( size_t i=0; i < QT_KEYSEQUENCE_MAX_LEN; i++ ) { + if ( lhs.keys[i] < rhs[i] ) return TRUE; + else + if ( lhs.keys[i] > rhs[i] ) return FALSE; + } + return FALSE; + } +}; + +QSimpleInputContext::QSimpleInputContext() + : QInputContext() +{ + clearComposeBuffer(); +} + +QSimpleInputContext::~QSimpleInputContext() +{ + clearComposeBuffer(); +} + +bool QSimpleInputContext::filterEvent( const QEvent *event ) +{ + if ( event->type() != QEvent::KeyPress ) + return FALSE; + + QKeyEvent *keyevent = (QKeyEvent *)event; + int keyval = keyevent->key(); + int val = 0; + + if ( isIgnoreKeys( keyval ) ) + return FALSE; + + if ( isComposingKeys( keyval ) ) { + // If composing keys are pressed, use keyval directly + val = UNITIZE( keyval ); + } else { + QString text = keyevent->text(); + if ( text.isEmpty() ) + return FALSE; + + // If not composing keys are pressed, use the character's unicode value + // NOTE : The contents of QKeyEvent::text() is restricted to + // only one character. See description of + // QInputContext::filterEvent() about key compression. + val = text[0].unicode(); + // qDebug( "str = %s", (const char*)keyevent->text().local8Bit() ); + } + + // Store value + int nCompose = 0; + while ( composeBuffer[nCompose] != 0 && nCompose < QT_KEYSEQUENCE_MAX_LEN ) + nCompose++; + + if ( nCompose == QT_KEYSEQUENCE_MAX_LEN ) { + clearComposeBuffer(); + nCompose = 0; + } + + composeBuffer[nCompose] = val; + + // check sequence + if( checkComposeTable( composeBuffer, &defaultComposeTable ) ) + return TRUE; + + return FALSE; +} + +void QSimpleInputContext::setFocus() +{ + //qDebug( "QSimpleInputContext: %p->setFocus(), focusWidget()=%p", + //this, focusWidget() ); +} + +void QSimpleInputContext::unsetFocus() +{ + //qDebug( "QSimpleInputContext: %p->unsetFocus(), focusWidget()=%p", + //this, focusWidget() ); + reset(); +} + +void QSimpleInputContext::setMicroFocus( int x, int y, int w, int h, QFont *f ) +{ +} + +void QSimpleInputContext::mouseHandler( int x, QEvent::Type type, + Qt::ButtonState button, + Qt::ButtonState state ) +{ + switch ( type ) { + case QEvent::MouseButtonPress: + case QEvent::MouseButtonRelease: + case QEvent::MouseButtonDblClick: + case QEvent::MouseMove: + // qDebug( "QSimpleInputContext::mouseHandler: " + // "x=%d, type=%d, button=%d, state=%d", x, type, button, state ); + break; + default: + break; + } +} + + +void QSimpleInputContext::reset() +{ + clearComposeBuffer(); + QInputContext::reset(); +} + +QString QSimpleInputContext::identifierName() +{ + return "simple"; +} + +QString QSimpleInputContext::language() +{ + return ""; // FIXME +} + +bool QSimpleInputContext::isIgnoreKeys( int keyval ) +{ + for ( uint i = 0; i < (sizeof(ignoreKeys)/sizeof(ignoreKeys[0])); i++ ) + if ( keyval == ignoreKeys[i] ) + return TRUE; + + return FALSE; +} + +bool QSimpleInputContext::isComposingKeys( int keyval ) +{ + for ( uint i = 0; i < (sizeof(composingKeys)/sizeof(composingKeys[0])); i++ ) + if ( keyval == composingKeys[i] ) + return TRUE; + + return FALSE; +} + +bool QSimpleInputContext::checkComposeTable( uint* composeBuffer, const QComposeTable *composeTable ) +{ + const QComposeTableElement *p = std::lower_bound( composeTable->data, + composeTable->data + composeTable->size, + composeBuffer, + Cmp() ); + + // no entries were found + if ( p == composeTable->data + composeTable->size ) { + // qDebug( "no match" ); + clearComposeBuffer(); + return FALSE; + } + + // check if compose buffer is matched + for ( int i=0; i < QT_KEYSEQUENCE_MAX_LEN; i++ ) { + + // check if partial match + if ( composeBuffer[i] == 0 && p->keys[i] ) { + // qDebug("partial match"); + return TRUE; + } + + if ( composeBuffer[i] != p->keys[i] ) { + // qDebug("different entry"); + clearComposeBuffer(); + return i!=0; + } + } + + // qDebug("match exactly"); + + // match exactly + commitChar( p->value ); + clearComposeBuffer(); + + return TRUE; +} + +void QSimpleInputContext::commitChar( uint c ) +{ + sendIMEvent( QEvent::IMStart ); + sendIMEvent( QEvent::IMEnd, QString(QChar(c)) ); +} + +void QSimpleInputContext::clearComposeBuffer(void) +{ + for ( uint i=0; i < (sizeof(composeBuffer)/sizeof(int)); i++ ) + composeBuffer[i] = 0; +} + |