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widget.cpp
202 lines (186 loc) · 6.42 KB
/
widget.cpp
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#include "widget.h"
#include "polynomial.h"
#include "functions.h"
#include "integral.h"
Widget::Widget(QWidget *parent)
: QWidget(parent)
{
setStyleSheet("background-color:white;");
isVisibleDenominator = false;
isActiveNumerator = true;
isS=0;
numerator = new QLabel("<font size=16>");
numerator->setFixedHeight(50);
denominator = new QLabel("<font size=16>");
denominator->setFixedHeight(50);
integral = new QLabel;
integral->setPixmap(QPixmap::fromImage(QImage(":/integral.png")));
diff = new QLabel;
diff->setPixmap(QPixmap::fromImage(QImage(":/diff.png")));
answer = new QLabel;
line = new QLabel;
startTimer(750);
display();
}
void Widget::timerEvent(QTimerEvent *)
{
if(isActiveNumerator){
if(numerator->text().at(numerator->text().size()-1)=='|')
numerator->setText(numerator->text().mid(0,numerator->text().size()-1));
else
numerator->setText(numerator->text()+"|");
}
else {
if(denominator->text().at(denominator->text().size()-1)=='|')
denominator->setText(denominator->text().mid(0,denominator->text().size()-1));
else
denominator->setText(denominator->text()+"|");
}
}
Widget::~Widget()
{
}
int Widget::lineSizePixels(QString str)
{
int ret=0;
for(int i=14,n=str.size();i<n;++i){
if(str[i]=='<'){
if(str[i+1]=='/')
i+=5;
else
i+=4;
}
else
ret++;
}
return ret*15;
}
void Widget::mousePressEvent(QMouseEvent *ev)
{
if(numerator->text().at(numerator->text().size()-1)=='|')
numerator->setText(numerator->text().mid(0,numerator->text().size()-1));
if(denominator->text().at(denominator->text().size()-1)=='|')
denominator->setText(denominator->text().mid(0,denominator->text().size()-1));
if(ev->y()<line->y()) {
isActiveNumerator = true;
}
else {
isActiveNumerator = false;
}
}
void Widget::display()
{
delete layout();
QSpacerItem *space1 = new QSpacerItem(100,10);
QSpacerItem *space2 = new QSpacerItem(100,10);
QSpacerItem *space3 = new QSpacerItem(10,10);
QHBoxLayout *hlayout = new QHBoxLayout;
hlayout->addSpacerItem(space1);
hlayout->addWidget(integral);
QVBoxLayout *layout = new QVBoxLayout;
layout->addWidget(numerator);
if(this->isVisibleDenominator){
QPixmap lineP(max(lineSizePixels((QString)numerator->text()),lineSizePixels((QString)denominator->text())),2);
QPainter paint;
paint.begin(&lineP);
paint.setBrush(QBrush(Qt::black));
paint.eraseRect(0,0,1000,1000);
paint.drawRect(0,0,1000,1000);
paint.end();
line->setPixmap(lineP);
layout->addWidget(line);
layout->addWidget(denominator);
}
hlayout->addLayout(layout);
hlayout->addSpacerItem(space3);
hlayout->addWidget(diff);
hlayout->addSpacerItem(space2);
QVBoxLayout *vlayout = new QVBoxLayout;
vlayout->addLayout(hlayout);
vlayout->addWidget(answer);
setLayout(vlayout);
}
void Widget::keyPressEvent(QKeyEvent *event)
{
if(event->key() == Qt::Key_Return){
if(numerator->text() == "<font size=16>"){
answer->setText("<br><font size=16>No.");
}
else {
if(denominator->text() == "<font size=16>") {
Polynomial p(Functions::deleteSups(numerator->text()));
Polynomial q("1");
qDebug() << p.toStringWithoutSups() << q.toStringWithoutSups();
answer->setText("<br><font size=16>Answer: "+Integral::notSimpleFunction(p,q,0));
}
else {
qDebug() << Functions::deleteSups(numerator->text()) << Functions::deleteSups(denominator->text());
Polynomial p(Functions::deleteSups(numerator->text()));
Polynomial q(Functions::deleteSups(denominator->text()));
qDebug() << p.toStringWithoutSups() << q.toStringWithoutSups();
answer->setText("<br><font size=16>Answer: "+Integral::notSimpleFunction(p,q,0));
}
}
}
if(numerator->text().at(numerator->text().size()-1)=='|')
numerator->setText(numerator->text().mid(0,numerator->text().size()-1));
if(denominator->text().at(denominator->text().size()-1)=='|')
denominator->setText(denominator->text().mid(0,denominator->text().size()-1));
if(event->key() == 94) {
if(isActiveNumerator)
numerator->setText(numerator->text()+"<sup>");
else
denominator->setText(denominator->text()+"<sup>");
isS = true;
display();
return;
}
if(event->key() == 16777236){
if(isS) {
if(isActiveNumerator)
numerator->setText(numerator->text()+"</sup>");
else
denominator->setText(denominator->text()+"</sup>");
isS = false;
}
display();
return;
}
if(event->key() == 16777219){
if(isActiveNumerator) {
if(numerator->text().at(numerator->text().size()-1)=='>')
numerator->setText(numerator->text().mid(0,numerator->text().size()-5-(int)!isS));
else
numerator->setText(numerator->text().mid(0,numerator->text().size()-1));
}
else {
if(denominator->text().at(denominator->text().size()-1)=='>')
denominator->setText(denominator->text().mid(0,denominator->text().size()-5-(int)!isS));
else
denominator->setText(denominator->text().mid(0,denominator->text().size()-1));
}
}
if(event->key() == 88 && !isS) {
if(isActiveNumerator)
numerator->setText(numerator->text()+'x');
else
denominator->setText(denominator->text()+'x');
}
if(event->key()<='9' && event->key()>='0') {
if(isActiveNumerator)
numerator->setText(numerator->text()+char(event->key()));
else
denominator->setText(denominator->text()+char(event->key()));
}
if((event->key() == '+' || event->key() == '-') && !isS) {
if(isActiveNumerator)
numerator->setText(numerator->text()+char(event->key()));
else
denominator->setText(denominator->text()+char(event->key()));
}
if(event->key() == '/'){
isVisibleDenominator = true;
isActiveNumerator = false;
}
display();
}