/******************************************************************************** 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>//#include <QBitmap>//#include <QPixmap>#include <QWhatsThis>#include <QDebug>#include "display.h"#include "engine.h"// Lcd display classMyLcdDisplay::MyLcdDisplay(QWidget *p)    :QScrollArea(p) {    setWhatsThis( tr("Displays the current input or result") );    lcdPixmap = 0;    lcdPainter = 0;    setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);    QFont smallFont(QApplication::font());    smallFont.setPointSize( 10 );    smallFont.setBold(true);        bigFont.setFamily("helvetica");    bigFont.setPointSize(24);    setFont(bigFont);    if ( !Qtopia::mousePreferred() ) {        setSizePolicy(QSizePolicy(QSizePolicy::MinimumExpanding,QSizePolicy::MinimumExpanding));        viewport()->setBackgroundRole( QPalette::NoRole );        setFrameStyle(NoFrame);    } else { //pda or touchscreen        setSizePolicy(QSizePolicy(QSizePolicy::MinimumExpanding,QSizePolicy::Fixed));    }}MyLcdDisplay::~MyLcdDisplay() {    delete lcdPixmap;    delete lcdPainter;}QSize MyLcdDisplay::sizeHint() const{    if (!Qtopia::mousePreferred())        return QScrollArea::sizeHint();    else        return QSize(-1,fontMetrics().lineSpacing()+2*frameWidth());}static const int pmHeight = 500;void MyLcdDisplay::readStack() {    bool stateOk = systemEngine->checkState();    int visibleWidth = viewport()->size().width();       if (!lcdPixmap) {	lcdPixmap = new QBitmap(visibleWidth-3,pmHeight);    }    lcdPixmap->clear();        if ( lcdPainter )       delete lcdPainter;    lcdPainter = new QPainter();         lcdPainter->begin(lcdPixmap);    lcdPainter->setPen(Qt::color1);    verticalOffset=0; // top margin    int horizontalOffset = 10; // right margin    if (!stateOk) {        lcdPainter->setFont(smallFont);	lcdPainter->drawText(5,5,visibleWidth - horizontalOffset,20,Qt::AlignRight,systemEngine->errorString);	verticalOffset=25;    } else {        lcdPainter->setFont(bigFont);        if (Qtopia::mousePreferred()) {            QPixmap *tmp;            if (systemEngine->dStack.isEmpty())                return;            int myoffset = 10;            tmp = systemEngine->dStack.top()->draw();            int drawPoint = qMax(visibleWidth - tmp->width(),0);            int srcStart = qMax(tmp->width() - visibleWidth,0);            lcdPainter->drawPixmap(drawPoint - myoffset,verticalOffset,*tmp,srcStart, 0, -1, -1);            verticalOffset += tmp->height();        }#ifdef QTOPIA_PHONE        else {            niStack = new QStack<QString*>();            ndStack = new QStack<Data*>();            while (!systemEngine->iStack.isEmpty())                 niStack->push(systemEngine->iStack.pop());            while (!systemEngine->dStack.isEmpty())                 ndStack->push(systemEngine->dStack.pop());            dataLeft = 1;            while (!niStack->isEmpty() || !ndStack->isEmpty()) {                horizontalOffset = 10;                horizontalOffset = drawNextItem(horizontalOffset,true, visibleWidth);            }            delete niStack;            delete ndStack;        }                #endif    }    lcdPainter->end();    QWidget *w = viewport();    //w->resize(visibleWidth, verticalOffset);    //w->update(0, 0, visibleWidth, verticalOffset);    w->update();}#ifdef QTOPIA_PHONEint MyLcdDisplay::drawNextItem(int hoffset,bool newline, int visibleWidth) {    QPixmap *tmp;    int myoffset = hoffset;    if (!niStack->isEmpty() && *(niStack->top()) == "Open brace impl") { // No tr	Instruction *tmpi = systemEngine->resolve(*(niStack->top()));	tmp = tmpi->draw();	systemEngine->iStack.push(niStack->pop());	myoffset += drawNextItem(hoffset,false, visibleWidth);    } else if (dataLeft && !ndStack->isEmpty()) {	tmp = ndStack->top()->draw();	systemEngine->dStack.push(ndStack->pop());	dataLeft--;    } else if (!niStack->isEmpty()) {	Instruction *tmpi = systemEngine->resolve(*(niStack->top()));	tmp = tmpi->draw();	dataLeft = tmpi->argCount - 1;	systemEngine->iStack.push(niStack->pop());	if (tmpi->name != "EvaluateLine") // No tr	    myoffset += drawNextItem(hoffset,false, visibleWidth);    } else	return 0;    int drawPoint = qMax(visibleWidth - tmp->width(),0);    int srcStart = qMax(tmp->width() - visibleWidth,0);    lcdPainter->drawPixmap(drawPoint - myoffset,verticalOffset,*tmp,srcStart, 0, -1, -1);    if (newline) {	verticalOffset += tmp->height();        if ( lcdPixmap->height() - verticalOffset < 50 ) {            lcdPainter->end();            QBitmap *old = lcdPixmap;            lcdPixmap = new QBitmap( visibleWidth-3, old->height()+pmHeight );            lcdPainter->begin(lcdPixmap);            lcdPainter->setPen(Qt::color1);            delete old;        }            }    return myoffset + tmp->width();}#endifvoid MyLcdDisplay::paintEvent(QPaintEvent *pe){      Q_UNUSED(pe);     QPainter wPainter(viewport());        if (lcdPixmap) {        int offset = qMin(0, viewport()->size().height() - verticalOffset);        wPainter.drawPixmap(1,offset,*lcdPixmap);    }}