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#include "solverwindow.h"
#include "sudokuwidget.h"
#include "sudoku.h"
#include <QtGui>
#include <QDir>
#include <QHBoxLayout>
#include <QVBoxLayout>
#include <QPushButton>
#include <cstdlib>
/*
* FIXME
* On windows, this results in a rather awkward directory.
* The homepath should probably be a setting.
* */
const QString HOMEDIR(QDir::homePath() + "/.sudoku");
SolverWindow::SolverWindow()
{
QHBoxLayout *windowlayout = new QHBoxLayout();
// sidebar
QVBoxLayout *sidebarlayout = new QVBoxLayout();
// add load button
QPushButton *loadbutton = new QPushButton(tr("Load"));
sidebarlayout->addWidget(loadbutton);
connect(loadbutton, SIGNAL(clicked()), this, SLOT(load()));
// add save button
QPushButton *savebutton = new QPushButton(tr("Save"));
sidebarlayout->addWidget(savebutton);
connect(savebutton, SIGNAL(clicked()), this, SLOT(saveas()));
// add revert button
QPushButton *revertbutton = new QPushButton(tr("Revert"));
sidebarlayout->addWidget(revertbutton);
connect(revertbutton, SIGNAL(clicked()), this, SLOT(revert()));
// add step constraints button
QPushButton *stepconstraintsbutton = new QPushButton(tr("Constraints"));
sidebarlayout->addWidget(stepconstraintsbutton);
connect(stepconstraintsbutton, SIGNAL(clicked()), this, SLOT(step_constraints()));
// add step coverage button
QPushButton *stepcoveragebutton = new QPushButton(tr("Coverage"));
sidebarlayout->addWidget(stepcoveragebutton);
connect(stepcoveragebutton, SIGNAL(clicked()), this, SLOT(step_coverage()));
// add validate button
QPushButton *validatebutton = new QPushButton(tr("Validate"));
sidebarlayout->addWidget(validatebutton);
connect(validatebutton, SIGNAL(clicked()), this, SLOT(validate()));
// add stretch
sidebarlayout->addStretch(1);
// add clear button
QPushButton *clearbutton = new QPushButton(tr("Clear"));
sidebarlayout->addWidget(clearbutton);
connect(clearbutton, SIGNAL(clicked()), this, SLOT(clear()));
// add sidebar layout
windowlayout->addLayout(sidebarlayout);
// sudoku widget
solverwindow_sudokuwidget = new SudokuWidget();
windowlayout->addWidget(solverwindow_sudokuwidget, 1);
// set window layout
setLayout(windowlayout);
// create home directory
QDir directory;
if (!directory.exists(HOMEDIR)) {
directory.mkdir(HOMEDIR);
}
}
void SolverWindow::load()
{
QString filename = QFileDialog::getOpenFileName(this, tr("Open..."), HOMEDIR, "Sudoku (*.sudoku)");
if (filename.isEmpty()) {
return;
}
QFile file(filename);
if (!file.open(QFile::ReadOnly | QFile::Text)) {
QMessageBox::warning(this, tr("Open file"),
tr("Could not open file %1:\n%2.")
.arg(filename)
.arg(file.errorString()));
return;
}
QApplication::setOverrideCursor(Qt::WaitCursor);
QTextStream textstream(&file);
Sudoku sudoku;
for (int row = 0; row < 9; row++) {
for (int column = 0; column < 9 ; column++) {
int i;
textstream >> i;
sudoku.cell(row, column).set_value(i);
}
}
solverwindow_sudokuwidget->set_values(sudoku);
solverwindow_revertstate.assign(sudoku);
file.close();
QApplication::restoreOverrideCursor();
}
void SolverWindow::revert()
{
solverwindow_sudokuwidget->set_values(solverwindow_revertstate);
}
void SolverWindow::saveas()
{
QString filename = QFileDialog::getSaveFileName(this, tr("Save as..."), HOMEDIR, "Sudoku (*.sudoku)");
if (filename.isEmpty()) {
return;
}
QFile file(filename);
if (!file.open(QFile::WriteOnly | QFile::Text)) {
QMessageBox::warning(this, tr("Save file"),
tr("Cannot write file %1:\n%2.")
.arg(filename)
.arg(file.errorString()));
return;
}
QApplication::setOverrideCursor(Qt::WaitCursor);
QTextStream textstream(&file);
Sudoku sudoku;
solverwindow_sudokuwidget->get_values(sudoku);
for (int row = 0; row < 9; row++) {
for (int column = 0; column < 9 ; column++) {
textstream << sudoku.cell(row, column).value();
if (column < 8) {
textstream << ' ';
if ((column % 3) == 2) {
textstream << ' ';
}
} else {
textstream << '\n';
}
}
if ((row < 8) && ((row % 3) == 2)) {
textstream << '\n';
}
}
file.close();
QApplication::restoreOverrideCursor();
return;
}
void SolverWindow::clear()
{
Sudoku sudoku;
solverwindow_sudokuwidget->set_values(sudoku);
}
void SolverWindow::step()
{
Sudoku sudoku;
solverwindow_sudokuwidget->get_values(sudoku);
Sudoku solution(sudoku);
int solved = solution.solve_rules();
if (solved == 0) {
qDebug() << "no solveable cells left!";
return;
}
// compare sudoku and solution values
int index_start = (int) random() % 81;
int index_current = index_start;
do {
int column = index_current % 9;
int row = (index_current - column) / 9;
if ((sudoku.cell(row,column).value() == 0) && (solution.cell(row,column).value() != 0)) {
sudoku.cell(row,column).set_value(solution.cell(row, column).value());
solverwindow_sudokuwidget->set_values(sudoku);
return;
}
index_current = (index_current + 1) % 81;
} while (index_current != index_start);
}
void SolverWindow::solve()
{
Sudoku sudoku;
solverwindow_sudokuwidget->get_values(sudoku);
int solved = sudoku.solve_rules();
sudoku.validate();
solverwindow_sudokuwidget->set_values(sudoku);
qDebug() << solved << " cells solved";
}
void SolverWindow::search()
{
Sudoku sudoku;
solverwindow_sudokuwidget->get_values(sudoku);
int iterations = sudoku.solve_search();
solverwindow_sudokuwidget->set_values(sudoku);
if (iterations > 0) {
qDebug() << "solved in " << iterations << " iterations";
}
}
void SolverWindow::step_constraints()
{
Sudoku sudoku;
solverwindow_sudokuwidget->get_values(sudoku);
int solved = sudoku.solve_constraints();
solverwindow_sudokuwidget->set_values(sudoku);
qDebug() << solved << " cells solved";
}
void SolverWindow::step_coverage()
{
Sudoku sudoku;
solverwindow_sudokuwidget->get_values(sudoku);
int solved = sudoku.solve_coverage();
solverwindow_sudokuwidget->set_values(sudoku);
qDebug() << solved << " cells solved";
}
void SolverWindow::validate()
{
Sudoku sudoku;
solverwindow_sudokuwidget->get_values(sudoku);
if (sudoku.validate()) {
qDebug() << "sudoku is valid";
} else {
qDebug() << "sudoku is not valid";
}
solverwindow_sudokuwidget->set_values(sudoku);
qDebug() << "sudoku validated";
}
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