/******************************************************************************** Copyright (C) 2000-2006 TROLLTECH ASA. All rights reserved.**** This file is part of the Phone Edition of the Qtopia Toolkit.**** Licensees holding a valid license agreement from Trolltech or any of its** authorized distributors may use this file in accordance with** the License Agreement provided with the Licensed Software.**** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for**   information about Trolltech's Commercial License Agreements.**** Contact info@trolltech.com if any conditions of this licensing are** not clear to you.********** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.******************************************************************************/#include <qtopia/qtopiaapplication.h>#ifndef QTOPIA_PHONE#include <QList>#include <QSettings>#ifdef ENABLE_SCIENCE#include "interfaces/advanced.h"#endif#ifdef ENABLE_FRACTION#include "interfaces/fraction.h"#endif#ifdef ENABLE_CONVERSION#include "interfaces/conversion.h"#endif#else#include <QAction>#include <QMenu>#include "interfaces/phone.h"#endif#include <QKeyEvent>#include <QDebug>#include "interfaces/simple.h"#include "calculator.h"#include "engine.h"Engine *systemEngine;// Calculator classCalculator::Calculator( QWidget * p, Qt::WFlags fl) : QWidget (p, fl){    setObjectName("Calculator");     QtopiaApplication::setInputMethodHint(this, QtopiaApplication::AlwaysOff);    setWindowTitle(tr("Calculator", "application header"));    systemEngine = new Engine();    QVBoxLayout *calculatorLayout = new QVBoxLayout(this);    calculatorLayout->setSizeConstraint(QLayout::SetNoConstraint);    calculatorLayout->setSpacing( 0 );    calculatorLayout->setMargin( 0 );       LCD = new MyLcdDisplay();    LCD->setFrameShape( QFrame::NoFrame );    LCD->setLineWidth( 0 );    calculatorLayout->addWidget(LCD);    systemEngine->setDisplay(LCD);#ifndef QT_NO_CLIPBOARD    cb = qApp->clipboard();#endif    connect(systemEngine,SIGNAL(stackChanged()),	LCD,SLOT(readStack()));    // Load plugins#ifndef QTOPIA_PHONE    modeBox = new QComboBox(this);    calculatorLayout->addWidget(modeBox);    pluginStackedWidget = new QStackedWidget();    connect (modeBox, SIGNAL(activated(int)), pluginStackedWidget, SLOT(setCurrentIndex(int)));    calculatorLayout->addWidget(pluginStackedWidget);        // add & sort user interfaces     QList<CalcUserInterface*> uiList;    uiList.append(new FormSimple());#ifdef ENABLE_FRACTION    uiList.append(new FormFraction());#endif#ifdef ENABLE_SCIENCE    uiList.append(new FormAdvanced());#endif#ifdef ENABLE_CONVERSION    uiList.append(new FormConversion());#endif        QStringList uiNames;    foreach(CalcUserInterface* ui, uiList) {        uiNames.append(ui->interfaceName());    }     uiNames.sort();    foreach(QString uiName, uiNames) {        for (int i=0; i<uiList.size(); i++) {            if (uiList[i]->interfaceName() == uiName) {                pluginStackedWidget->addWidget(uiList.takeAt(i));                modeBox->addItem(uiName);            }        }    }    QSettings config("Trolltech","calculator"); // No tr    config.beginGroup("View"); // No tr    QString simpleUIName = qApp->translate("FormSimple", "Simple");    QString uiName = config.value("lastView", simpleUIName).toString();     int lastViewIndex = uiNames.indexOf(uiName);    if (lastViewIndex == -1) // language has changed in the meantime        lastViewIndex = uiNames.indexOf(simpleUIName);    modeBox->setCurrentIndex(2/*lastViewIndex*/);    pluginStackedWidget->setCurrentIndex(lastViewIndex);#else    si = 0;    if (!Qtopia::mousePreferred()) {        si = new FormPhone(LCD);        QtopiaApplication::setInputMethodHint(si, QtopiaApplication::AlwaysOff);        connect(si, SIGNAL( close() ), this, SLOT( close() ) );        calculatorLayout->addWidget(si);        si->setFocus( );        LCD->setFocusPolicy( Qt::NoFocus );    } else {        calculatorLayout->addWidget(new FormSimple());    }        QMenu * cmenu = QSoftMenuBar::menuFor(this);    QAction * a_copy = new QAction(  QIcon( ":icon/copy" ),            tr( "Copy" ), this);    a_copy->setWhatsThis( tr("Copy the last result.") );    connect( a_copy, SIGNAL( triggered() ), this, SLOT( copy() ) );            if (!Qtopia::mousePreferred()) {        QAction * a_clear = new QAction(  QIcon( ":icon/clearall" ),                tr( "Clear All" ), this );        connect( a_clear, SIGNAL( triggered() ), si, SLOT( clearAll() ) );        cmenu->addAction(a_clear);    }    cmenu->addAction(a_copy);#endif // !QTOPIA_PHONE}Calculator::~Calculator(){#ifndef QTOPIA_PHONE    if (modeBox->count() > 0 ) {	QSettings config("Trolltech","calculator"); // No tr	config.beginGroup("View"); // No tr	config.setValue("lastView", modeBox->currentText() ); // No tr    }    #endif    if ( LCD )        delete LCD;    if ( systemEngine )        delete systemEngine;}void Calculator::keyPressEvent(QKeyEvent *e) {    int key = e->key();#ifndef QT_NO_CLIPBOARD    if (e->modifiers() & Qt::ControlModifier) {	switch (key) {	    case Qt::Key_C:		copy();		break;	    case Qt::Key_V:		paste();		break;	    case Qt::Key_X:		cut();		break;	}        e->accept();    }#endif    if (Qtopia::mousePreferred()) {        switch (key) {            // backspace            case Qt::Key_Backtab:            case Qt::Key_Backspace:            case Qt::Key_Delete:                    systemEngine->delChar();                break;            // evaluate            case Qt::Key_Enter:            case Qt::Key_Return:            case Qt::Key_Equal:                systemEngine->evaluate();           //void paste();    //   void cut();                break;            // basic mathematical keys            case Qt::Key_Plus:                systemEngine->pushInstruction("Add"); // No tr                break;            case Qt::Key_Asterisk:                systemEngine->pushInstruction("Multiply"); // No tr                break;            case Qt::Key_Minus:                systemEngine->pushInstruction("Subtract"); // No tr                break;            case Qt::Key_Slash:                systemEngine->pushInstruction("Divide"); // No tr                break;            case Qt::Key_ParenLeft:                systemEngine->openBrace();                break;            case Qt::Key_ParenRight:                systemEngine->closeBrace();                break;            default:                QString text = e->text();                if ( !text.isEmpty() ) {                    QChar qc = e->text().at(0);                    if ( qc.isPrint() && !qc.isSpace() ) {                        systemEngine->push(qc.toLatin1());                        e->accept();                        return;                    }                }                QWidget::keyPressEvent(e);       }    }    e->ignore();}void Calculator::copy() {    cb->setText(systemEngine->getDisplay());}void Calculator::cut() {    copy();    systemEngine->softReset();}void Calculator::paste() {    QString t = cb->text();    if (!t.isEmpty()) {	for (int i=0; i<t.length(); i++) {	    switch (t[i].toLatin1()) {		case '=':		    systemEngine->evaluate();		    break;		case '+':		    systemEngine->pushInstruction("Add"); // No tr		    break;		case '*':		    systemEngine->pushInstruction("Multiply"); // No tr		    break;		case '-':		    systemEngine->pushInstruction("Subtract"); // No tr		    break;		case '/':		    systemEngine->pushInstruction("Divide"); // No tr		    break;		case '(':		    systemEngine->openBrace();		    break;		case ')':		    systemEngine->closeBrace();		    break;		default:		    if ( t[i].isPrint() && !t[i].isSpace() ) {			systemEngine->push(t[i].toLatin1());		    }	    }	}    }}void Calculator::showEvent(QShowEvent * e){    systemEngine->memoryReset();    systemEngine->dualReset();    QtopiaApplication::hideInputMethod();    QWidget::showEvent( e );    }