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/***************************************************************************
* Copyright (C) 2008 by Alexey Balakin *
* mathgl.abalakin@gmail.com *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include <QLabel>
#include <QLayout>
#include <QLineEdit>
#include <QPushButton>
#include <QListView>
#include <QComboBox>
#include <QTextEdit>
#include <mgl2/mgl.h>
#include "calc_dlg.h"
extern mglParse parser;
//-----------------------------------------------------------------------------
//
// Calc dialog
//
//-----------------------------------------------------------------------------
QWidget *createCalcDlg(QWidget *p, QTextEdit *e)
{
CalcDialog *c = new CalcDialog(p);
QObject::connect(c, SIGNAL(putNumber(QString)),e,SLOT(insertPlainText(QString)));
return c;
}
//-----------------------------------------------------------------------------
CalcDialog::CalcDialog(QWidget *parent) : QWidget(parent)
{
QPushButton *b;
QHBoxLayout *m=new QHBoxLayout(this);
QVBoxLayout *o=new QVBoxLayout; m->addLayout(o); m->setStretchFactor(o,1);
// QStandardItem *it;
text = new QLineEdit(this); o->addWidget(text);
connect(text,SIGNAL(textChanged(QString)),this,SLOT(evaluate()));
connect(text,SIGNAL(returnPressed()),this,SLOT(addResult()));
hist = new QStandardItemModel(this);
// it = new QStandardItem(_("Formula")); hist->setHorizontalHeaderItem(0,it);
// it = new QStandardItem(_("Result")); hist->setHorizontalHeaderItem(1,it);
prev = new QListView(this); o->addWidget(prev);
connect(prev,SIGNAL(clicked(QModelIndex)),this,SLOT(putText(QModelIndex)));
QFont f(font()); f.setPointSize(f.pointSize()*0.75);
prev->setModel(hist); prev->setFont(f);
prev->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Ignored);
o = new QVBoxLayout; m->addLayout(o);
QLabel *l = new QLabel(_("Result"),this); o->addWidget(l);
result=new QLineEdit(this); result->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored);
result->setReadOnly(true); o->addWidget(result);
b = new QPushButton(_("To script"), this); o->addWidget(b);
connect(b, SIGNAL(clicked()), this, SLOT(keyPut()));
b = new QPushButton(_("Clear"), this); o->addWidget(b);
connect(b, SIGNAL(clicked()), this, SLOT(clear()));
QGridLayout *g = new QGridLayout; m->addLayout(g); m->setStretchFactor(g,0);
b = new QPushButton("7", this); g->addWidget(b, 0, 0);
int minw=b->height(); b->setMaximumWidth(minw);
connect(b, SIGNAL(clicked()), this, SLOT(key7()));
b = new QPushButton("8", this); g->addWidget(b, 0, 1); b->setMaximumWidth(minw);
connect(b, SIGNAL(clicked()), this, SLOT(key8()));
b = new QPushButton("9", this); g->addWidget(b, 0, 2); b->setMaximumWidth(minw);
connect(b, SIGNAL(clicked()), this, SLOT(key9()));
b = new QPushButton("+", this); g->addWidget(b, 0, 3); b->setMaximumWidth(minw);
connect(b, SIGNAL(clicked()), this, SLOT(keyAdd()));
b = new QPushButton(QString::fromWCharArray(L"\u03c0"), this); g->addWidget(b, 0, 4);
connect(b, SIGNAL(clicked()), this, SLOT(keyPi())); b->setMaximumWidth(minw);
b = new QPushButton("4", this); g->addWidget(b, 1, 0); b->setMaximumWidth(minw);
connect(b, SIGNAL(clicked()), this, SLOT(key4()));
b = new QPushButton("5", this); g->addWidget(b, 1, 1); b->setMaximumWidth(minw);
connect(b, SIGNAL(clicked()), this, SLOT(key5()));
b = new QPushButton("6", this); g->addWidget(b, 1, 2); b->setMaximumWidth(minw);
connect(b, SIGNAL(clicked()), this, SLOT(key6()));
b = new QPushButton("-", this); g->addWidget(b, 1, 3); b->setMaximumWidth(minw);
connect(b, SIGNAL(clicked()), this, SLOT(keySub()));
b = new QPushButton(QString::fromWCharArray(L"x\xb2"), this); g->addWidget(b, 1, 4);
connect(b, SIGNAL(clicked()), this, SLOT(keyX2())); b->setMaximumWidth(minw);
b = new QPushButton("1", this); g->addWidget(b, 2, 0); b->setMaximumWidth(minw);
connect(b, SIGNAL(clicked()), this, SLOT(key1()));
b = new QPushButton("2", this); g->addWidget(b, 2, 1); b->setMaximumWidth(minw);
connect(b, SIGNAL(clicked()), this, SLOT(key2()));
b = new QPushButton("3", this); g->addWidget(b, 2, 2); b->setMaximumWidth(minw);
connect(b, SIGNAL(clicked()), this, SLOT(key3()));
b = new QPushButton("*", this); g->addWidget(b, 2, 3); b->setMaximumWidth(minw);
connect(b, SIGNAL(clicked()), this, SLOT(keyMul()));
b = new QPushButton("(", this); g->addWidget(b, 2, 4); b->setMaximumWidth(minw);
connect(b, SIGNAL(clicked()), this, SLOT(keyBrO()));
b = new QPushButton("0", this); g->addWidget(b, 3, 0); b->setMaximumWidth(minw);
connect(b, SIGNAL(clicked()), this, SLOT(key0()));
b = new QPushButton(".", this); g->addWidget(b, 3, 1); b->setMaximumWidth(minw);
connect(b, SIGNAL(clicked()), this, SLOT(keyDot()));
b = new QPushButton("E", this); g->addWidget(b, 3, 2); b->setMaximumWidth(minw);
connect(b, SIGNAL(clicked()), this, SLOT(keyE()));
b = new QPushButton("/", this); g->addWidget(b, 3, 3); b->setMaximumWidth(minw);
connect(b, SIGNAL(clicked()), this, SLOT(keyDiv()));
b = new QPushButton(")", this); g->addWidget(b, 3, 4); b->setMaximumWidth(minw);
connect(b, SIGNAL(clicked()), this, SLOT(keyBrC()));
fillFuncName();
o=new QVBoxLayout; m->addLayout(o); m->setStretchFactor(o,0);
type = new QComboBox(this); o->addWidget(type);
type->addItems(names); type->setCurrentIndex(0);
func = new QComboBox(this); o->addWidget(func);
func->addItems(funcName[0]); type->setCurrentIndex(0);
descr= new QLabel(this); o->addWidget(descr); o->setStretchFactor(descr,0);
descr->setText(funcInfo[0].at(0));
connect(type, SIGNAL(currentIndexChanged(int)), this, SLOT(typeUpdate(int)));
connect(func, SIGNAL(currentIndexChanged(int)), this, SLOT(funcUpdate(int)));
b = new QPushButton(_("Put function"), this); o->addWidget(b);
connect(b, SIGNAL(clicked()), this, SLOT(keyFnc()));
}
//-----------------------------------------------------------------------------
CalcDialog::~CalcDialog() {}
void CalcDialog::foc() { text->setFocus(Qt::ActiveWindowFocusReason); }
//-----------------------------------------------------------------------------
void CalcDialog::key1() { text->insert("1"); foc(); }
void CalcDialog::key2() { text->insert("2"); foc(); }
void CalcDialog::key3() { text->insert("3"); foc(); }
void CalcDialog::key4() { text->insert("4"); foc(); }
void CalcDialog::key5() { text->insert("5"); foc(); }
void CalcDialog::key6() { text->insert("6"); foc(); }
void CalcDialog::key7() { text->insert("7"); foc(); }
void CalcDialog::key8() { text->insert("8"); foc(); }
void CalcDialog::key9() { text->insert("9"); foc(); }
void CalcDialog::key0() { text->insert("0"); foc(); }
void CalcDialog::keyE() { text->insert("E"); foc(); }
void CalcDialog::keyPi() { text->insert("pi"); foc(); }
void CalcDialog::keyX2() { text->insert("^2"); foc(); }
void CalcDialog::keyAdd() { text->insert("+"); foc(); }
void CalcDialog::keyMul() { text->insert("*"); foc(); }
void CalcDialog::keySub() { text->insert("-"); foc(); }
void CalcDialog::keyDiv() { text->insert("/"); foc(); }
void CalcDialog::keyBrO() { text->insert("("); foc(); }
void CalcDialog::keyBrC() { text->insert(")"); foc(); }
void CalcDialog::keyDot() { text->insert("."); foc(); }
void CalcDialog::clear() { text->clear(); foc(); }
//-----------------------------------------------------------------------------
void CalcDialog::keyFnc()
{
text->insert(func->currentText());
text->setCursorPosition(text->cursorPosition()-1); foc();
}
//-----------------------------------------------------------------------------
void CalcDialog::keyPut() { emit putNumber(result->text()); }
//-----------------------------------------------------------------------------
void CalcDialog::putText(QModelIndex ind)
{ text->setText(hist->data(ind).toString()); }
//-----------------------------------------------------------------------------
void CalcDialog::addResult()
{
QStandardItem *it;
QFont f(prev->font()); f.setBold(true);
hist->insertRows(0,2);
it = new QStandardItem(text->text()); it->setFont(f); hist->setItem(0,it);
it = new QStandardItem(result->text()); hist->setItem(1,it);
}
//-----------------------------------------------------------------------------
void CalcDialog::evaluate()
{
QString sel=text->text();
if(sel.isEmpty()) return;
wchar_t *txt=new wchar_t[sel.length()+1];
sel.toWCharArray(txt); txt[sel.length()]=0;
setlocale(LC_NUMERIC, "C");
mglData res=parser.Calc(txt);
setlocale(LC_NUMERIC, "");
// result->setText(QString::fromWCharArray(txt));
delete []txt;
result->setText(QString::number(res.GetVal(0)));
}
//-----------------------------------------------------------------------------
void CalcDialog::fillFuncName()
{
names<<_("Basic")<<_("Exp and log")<<_("Trigonometric")<<_("Hyperbolic")
<<_("Bessel")<<_("Elliptic")<<_("Jacobi")<<_("Airy and Gamma")
<<_("Exp-integrals")<<_("Special");
// basic
funcName[0]<<"abs()"<<"sign()"<<"step()"<<"sqrt()"<<"mod(,)"<<"arg(,)";
funcInfo[0]<<"Absolute value"<<"Sign of number"<<"Step function"
<<"Square root"<<"x modulo y"<<"Argument of complex number";
// exp and logarithms
funcName[1]<<"exp()"<<"pow(,)"<<"ln()"<<"lg()"<<"log(,)";
funcInfo[1]<<"Exponential function e^x"<<"Power x^y"<<"Logarithm of x"
<<"Decimal logarithm of x"<<"Logarithm of x on base a";
// trigonometric
funcName[2]<<"sin()"<<"cos()"<<"tan()"<<"sinc()"<<"asin()"<<"acos()"<<"atan()";
funcInfo[2]<<"Sine function"<<"Cosine function"<<"Tangent function"<<"sin(x)/x"
<<"Inverse sine function"<<"Inverse cosine function"<<"Inverse tangent function";
// hyperbolic
funcName[3]<<"sinh()"<<"cosh()"<<"tanh()"<<"asinh()"<<"acosh()"<<"atanh()";
funcInfo[3]<<"Hyperbolic sine function"<<"Hyperbolic cosine function"
<<"Hyperbolic tangent function"<<"Inverse hyperbolic sine function"
<<"Inverse hyperbolic cosine function"<<"Inverse hyperbolic tangent function";
// bessel
funcName[4]<<"bessel_j(,)"<<"bessel_y(,)"<<"bessel_i(,)"<<"bessel_k(,)";
funcInfo[4]<<"Regular cylindrical Bessel function"<<"Irregular cylindrical Bessel function"
<<"Regular modified Bessel function"<<"Irregular modified Bessel function";
// elliptic
funcName[5]<<"elliptic_e(,)"<<"elliptic_f(,)"<<"elliptic_ec()"<<"elliptic_kc()";
funcInfo[5]<<"Elliptic integral E(phi,k)"<<"Elliptic integral F(phi,k)"
<<"Complete elliptic integral E(k)"<<"Complete elliptic integral K(k)";
// jacobi
funcName[6]<<"sn(,)"<<"cn(,)"<<"dn(,)"<<"sc(,)"<<"dc(,)"<<"nc(,)"<<"cs(,)"
<<"ds(,)"<<"ns(,)"<<"sd(,)"<<"cd(,)"<<"nd(,)";
funcInfo[6]<<"Jacobi function sn(u|m)"<<"Jacobi function cn(u|m)"
<<"Jacobi function dn(u|m)"<<"Jacobi function sn(u|m)/cn(u|m)"
<<"Jacobi function dn(u|m)/cn(u|m)"<<"Jacobi function 1/cn(u|m)"
<<"Jacobi function cn(u|m)/sn(u|m)"<<"Jacobi function dn(u|m)/sn(u|m)"
<<"Jacobi function 1/sn(u|m)"<<"Jacobi function sn(u|m)/dn(u|m)"
<<"Jacobi function cn(u|m)/dn(u|m)"<<"Jacobi function 1/dn(u|m)";
// airy and gamma
funcName[7]<<"airy_ai()"<<"airy_bi()"<<"airy_dai()"<<"airy_dbi()"<<"gamma()"<<"psi()"<<"beta(,)";
funcInfo[7]<<"Airy function Ai(x)"<<"Airy function Bi(x)"
<<"Derivative of Airy function Ai'(x)"<<"Derivative of Airy function Bi'(x)"
<<QString::fromWCharArray(L"Gamma function \u0393(x)")
<<QString::fromWCharArray(L"Digamma function \u0393'(x)/\u0393(x)")
<<QString::fromWCharArray(L"Beta function \u0393(x)*\u0393(y)/\u0393(x+y)");
// exp integrals
funcName[8]<<"ci()"<<"si()"<<"ei()"<<"e1()"<<"e2()"<<"ei3()";
funcInfo[8]<<QString::fromWCharArray(L"Cosine integral \u222bdt cos(t)/t")
<<QString::fromWCharArray(L"Sine integral \u222bdt sin(t)/t")
<<QString::fromWCharArray(L"Integral -\u222bdt exp(-t)/t")
<<QString::fromWCharArray(L"Integral Re \u222bdt exp(-xt)/t")
<<QString::fromWCharArray(L"Integral Re\u222bdt exp(-xt)/t^2")
<<QString::fromWCharArray(L"Integral \u222bdt exp(-t^3)");
// special
funcName[9]<<"erf()"<<"z()"<<"legendre(,)"<<"dilog()"<<"eta()"<<"zeta()"<<"w0()"<<"w1()";
funcInfo[9]<<QString::fromWCharArray(L"Error function 2/√π \u222bdt exp(-t^2)")<<"Dawson function"
<<"Legendre polynomial P_l(x)"<<QString::fromWCharArray(L"Dilogarithm -Re\u222bds ln(1-s)/s")
<<"Eta function (1-2/2^s)*zeta(s)"<<"Riemann zeta function"
<<"Lambert W function W_0(x)"<<"Lambert W function W_{-1}(x)";
}
//-----------------------------------------------------------------------------
void CalcDialog::typeUpdate(int s)
{
if(s<0 || s>9) return;
func->clear(); func->addItems(funcName[s]); func->setCurrentIndex(0);
}
//-----------------------------------------------------------------------------
void CalcDialog::funcUpdate(int f)
{
int s=type->currentIndex();
if(s<0 || s>9 || f<0) return; // wrong index
descr->setText(funcInfo[s].at(f));
}
//-----------------------------------------------------------------------------
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