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286 lines
7.6 KiB
286 lines
7.6 KiB
/****************************************************************************
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** $Id$
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**
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** Implementation of QSimpleInputContext class
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**
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** Copyright (C) 2004 immodule for Qt Project. All rights reserved.
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**
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** This file is written to contribute to Trolltech AS under their own
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** licence. You may use this file under your Qt license. Following
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** description is copied from their original file headers. Contact
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** immodule-qt@freedesktop.org if any conditions of this licensing are
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** not clear to you.
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**
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**
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** This file is part of the input method module of the Qt GUI Toolkit.
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**
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** This file may be distributed under the terms of the Q Public License
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** as defined by Trolltech AS of Norway and appearing in the file
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** LICENSE.QPL included in the packaging of this file.
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**
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** This file may be distributed and/or modified under the terms of the
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** GNU General Public License version 2 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file.
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**
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** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
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** licenses may use this file in accordance with the Qt Commercial License
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** Agreement provided with the Software.
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**
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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**
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** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
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** information about Qt Commercial License Agreements.
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** See http://www.trolltech.com/qpl/ for QPL licensing information.
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** See http://www.trolltech.com/gpl/ for GPL licensing information.
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**
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** Contact info@trolltech.com if any conditions of this licensing are
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** not clear to you.
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**
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**********************************************************************/
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#include "qsimpleinputcontext.h"
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#include <qnamespace.h>
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#include <qevent.h>
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#include <qglobal.h>
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#include <algorithm>
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static const int ignoreKeys[] = {
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Qt::Key_Shift,
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Qt::Key_Control,
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Qt::Key_Meta,
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Qt::Key_Alt,
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Qt::Key_CapsLock,
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Qt::Key_Super_L,
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Qt::Key_Super_R,
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Qt::Key_Hyper_L,
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Qt::Key_Hyper_R,
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Qt::Key_Mode_switch
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};
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static const int composingKeys[] = {
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Qt::Key_Multi_key,
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Qt::Key_Dead_Grave,
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Qt::Key_Dead_Acute,
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Qt::Key_Dead_Circumflex,
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Qt::Key_Dead_Tilde,
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Qt::Key_Dead_Macron,
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Qt::Key_Dead_Breve,
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Qt::Key_Dead_Abovedot,
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Qt::Key_Dead_Diaeresis,
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Qt::Key_Dead_Abovering,
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Qt::Key_Dead_Doubleacute,
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Qt::Key_Dead_Caron,
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Qt::Key_Dead_Cedilla,
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Qt::Key_Dead_Ogonek,
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Qt::Key_Dead_Iota,
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Qt::Key_Dead_Voiced_Sound,
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Qt::Key_Dead_Semivoiced_Sound,
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Qt::Key_Dead_Belowdot,
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Qt::Key_Dead_Hook,
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Qt::Key_Dead_Horn
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};
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class Cmp
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{
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public:
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bool operator () (const QComposeTableElement &lhs, const QComposeTableElement &rhs) const {
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for ( size_t i=0; i < QT_KEYSEQUENCE_MAX_LEN; i++ ) {
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if ( lhs.keys[i] < rhs.keys[i] ) return TRUE;
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else
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if ( lhs.keys[i] > rhs.keys[i] ) return FALSE;
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}
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return FALSE;
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}
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bool operator () (const QComposeTableElement &lhs, const uint rhs[QT_KEYSEQUENCE_MAX_LEN]) const {
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for ( size_t i=0; i < QT_KEYSEQUENCE_MAX_LEN; i++ ) {
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if ( lhs.keys[i] < rhs[i] ) return TRUE;
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else
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if ( lhs.keys[i] > rhs[i] ) return FALSE;
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}
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return FALSE;
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}
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};
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QSimpleInputContext::QSimpleInputContext()
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: QInputContext()
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{
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clearComposeBuffer();
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}
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QSimpleInputContext::~QSimpleInputContext()
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{
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clearComposeBuffer();
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}
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bool QSimpleInputContext::filterEvent( const QEvent *event )
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{
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if ( event->type() != QEvent::KeyPress )
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return FALSE;
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QKeyEvent *keyevent = (QKeyEvent *)event;
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int keyval = keyevent->key();
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int val = 0;
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if ( isIgnoreKeys( keyval ) )
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return FALSE;
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if ( isComposingKeys( keyval ) ) {
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// If composing keys are pressed, use keyval directly
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val = UNITIZE( keyval );
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} else {
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QString text = keyevent->text();
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if ( text.isEmpty() )
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return FALSE;
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// If not composing keys are pressed, use the character's unicode value
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// NOTE : The contents of QKeyEvent::text() is restricted to
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// only one character. See description of
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// QInputContext::filterEvent() about key compression.
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val = text[0].unicode();
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// qDebug( "str = %s", (const char*)keyevent->text().local8Bit() );
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}
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// Store value
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int nCompose = 0;
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while ( composeBuffer[nCompose] != 0 && nCompose < QT_KEYSEQUENCE_MAX_LEN )
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nCompose++;
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if ( nCompose == QT_KEYSEQUENCE_MAX_LEN ) {
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clearComposeBuffer();
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nCompose = 0;
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}
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composeBuffer[nCompose] = val;
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// check sequence
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if( checkComposeTable( composeBuffer, &defaultComposeTable ) )
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return TRUE;
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return FALSE;
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}
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void QSimpleInputContext::setFocus()
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{
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//qDebug( "QSimpleInputContext: %p->setFocus(), focusWidget()=%p",
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//this, focusWidget() );
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}
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void QSimpleInputContext::unsetFocus()
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{
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//qDebug( "QSimpleInputContext: %p->unsetFocus(), focusWidget()=%p",
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//this, focusWidget() );
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reset();
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}
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void QSimpleInputContext::setMicroFocus( int x, int y, int w, int h, QFont *f )
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{
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}
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void QSimpleInputContext::mouseHandler( int x, QEvent::Type type,
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Qt::ButtonState button,
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Qt::ButtonState state )
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{
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switch ( type ) {
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case QEvent::MouseButtonPress:
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case QEvent::MouseButtonRelease:
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case QEvent::MouseButtonDblClick:
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case QEvent::MouseMove:
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// qDebug( "QSimpleInputContext::mouseHandler: "
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// "x=%d, type=%d, button=%d, state=%d", x, type, button, state );
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break;
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default:
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break;
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}
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}
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void QSimpleInputContext::reset()
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{
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clearComposeBuffer();
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QInputContext::reset();
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}
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QString QSimpleInputContext::identifierName()
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{
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return "simple";
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}
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QString QSimpleInputContext::language()
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{
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return ""; // FIXME
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}
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bool QSimpleInputContext::isIgnoreKeys( int keyval )
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{
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for ( uint i = 0; i < (sizeof(ignoreKeys)/sizeof(ignoreKeys[0])); i++ )
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if ( keyval == ignoreKeys[i] )
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return TRUE;
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return FALSE;
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}
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bool QSimpleInputContext::isComposingKeys( int keyval )
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{
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for ( uint i = 0; i < (sizeof(composingKeys)/sizeof(composingKeys[0])); i++ )
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if ( keyval == composingKeys[i] )
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return TRUE;
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return FALSE;
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}
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bool QSimpleInputContext::checkComposeTable( uint* composeBuffer, const QComposeTable *composeTable )
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{
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const QComposeTableElement *p = std::lower_bound( composeTable->data,
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composeTable->data + composeTable->size,
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composeBuffer,
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Cmp() );
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// no entries were found
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if ( p == composeTable->data + composeTable->size ) {
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// qDebug( "no match" );
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clearComposeBuffer();
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return FALSE;
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}
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// check if compose buffer is matched
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for ( int i=0; i < QT_KEYSEQUENCE_MAX_LEN; i++ ) {
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// check if partial match
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if ( composeBuffer[i] == 0 && p->keys[i] ) {
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// qDebug("partial match");
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return TRUE;
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}
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if ( composeBuffer[i] != p->keys[i] ) {
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// qDebug("different entry");
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clearComposeBuffer();
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return i!=0;
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}
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}
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// qDebug("match exactly");
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// match exactly
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commitChar( p->value );
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clearComposeBuffer();
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return TRUE;
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}
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void QSimpleInputContext::commitChar( uint c )
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{
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sendIMEvent( QEvent::IMStart );
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sendIMEvent( QEvent::IMEnd, QString(QChar(c)) );
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}
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void QSimpleInputContext::clearComposeBuffer(void)
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{
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for ( uint i=0; i < (sizeof(composeBuffer)/sizeof(int)); i++ )
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composeBuffer[i] = 0;
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}
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