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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "mainwindow.h"
#include <QtCore/qdir.h>
#include <QtCore/qfile.h>
#include <QtCore/qstringlistmodel.h>
#include <QtCore/qtextstream.h>
#include <QtWidgets/qcombobox.h>
#include <QtWidgets/qgridlayout.h>
#include <QtWidgets/qlabel.h>
#include <QtWidgets/qtoolbutton.h>
#include <QtScxml/qscxmlstatemachine.h>
static int Size = 9;
using namespace Qt::Literals::StringLiterals;
static QVariantList emptyRow()
{
QVariantList row;
for (int i = 0; i < Size; i++)
row.append(QVariant(0));
return row;
}
static QVariantMap readSudoku(const QString &fileName)
{
QFile input(fileName);
input.open(QIODevice::ReadOnly | QIODevice::Text);
QTextStream str(&input);
const QString data = str.readAll();
QVariantList initRowsVariant;
const QStringList rows = data.split('\n'_L1);
for (int i = 0; i < Size; i++) {
if (i < rows.count()) {
QVariantList initRowVariant;
const QStringList row = rows.at(i).split(','_L1);
for (int j = 0; j < Size; j++) {
const int val = j < row.count()
? row.at(j).toInt() % (Size + 1) : 0;
initRowVariant.append(val);
}
initRowsVariant.append(QVariant(initRowVariant));
} else {
initRowsVariant.append(QVariant(emptyRow()));
}
}
QVariantMap dataVariant;
dataVariant.insert(u"initState"_s, initRowsVariant);
return dataVariant;
}
MainWindow::MainWindow(QScxmlStateMachine *machine, QWidget *parent) :
QWidget(parent),
m_machine(machine)
{
const QList<QToolButton *> initVector(Size, nullptr);
m_buttons = QList<QList<QToolButton *>>(Size, initVector);
QGridLayout *layout = new QGridLayout(this);
for (int i = 0; i < Size; i++) {
for (int j = 0; j < Size; j++) {
QToolButton *button = new QToolButton(this);
button->setSizePolicy(QSizePolicy::Expanding,
QSizePolicy::Expanding);
layout->addWidget(button, i + i / 3, j + j / 3);
m_buttons[i][j] = button;
connect(button, &QToolButton::clicked, this, [this, i, j]() {
QVariantMap data;
data.insert(u"x"_s, i);
data.insert(u"y"_s, j);
m_machine->submitEvent("tap", data);
});
}
}
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 2; j++) {
QFrame *hFrame = new QFrame(this);
hFrame->setFrameShape(QFrame::HLine);
layout->addWidget(hFrame, 4 * j + 3, 4 * i, 1, 3);
QFrame *vFrame = new QFrame(this);
vFrame->setFrameShape(QFrame::VLine);
layout->addWidget(vFrame, 4 * i, 4 * j + 3, 3, 1);
}
}
m_startButton = new QToolButton(this);
m_startButton->setSizePolicy(QSizePolicy::Expanding,
QSizePolicy::Expanding);
m_startButton->setText(tr("Start"));
layout->addWidget(m_startButton, Size + 3, 0, 1, 3);
connect(m_startButton, &QAbstractButton::clicked, this, [this]() {
if (m_machine->isActive("playing"))
m_machine->submitEvent("stop");
else
m_machine->submitEvent("start");
});
m_label = new QLabel(tr("unsolved"));
m_label->setAlignment(Qt::AlignCenter);
layout->addWidget(m_label, Size + 3, 4, 1, 3);
m_undoButton = new QToolButton(this);
m_undoButton->setSizePolicy(QSizePolicy::Expanding,
QSizePolicy::Expanding);
m_undoButton->setText(tr("Undo"));
m_undoButton->setEnabled(false);
layout->addWidget(m_undoButton, Size + 3, 8, 1, 3);
connect(m_undoButton, &QAbstractButton::clicked, this, [this]() {
m_machine->submitEvent("undo");
});
m_chooser = new QComboBox(this);
layout->addWidget(m_chooser, Size + 4, 0, 1, 11);
QDir dataDir(":/data"_L1);
QFileInfoList sudokuFiles = dataDir.entryInfoList(QStringList()
<< "*.data");
for (const QFileInfo &sudokuFile : sudokuFiles) {
m_chooser->addItem(sudokuFile.completeBaseName(),
sudokuFile.absoluteFilePath());
}
connect(m_chooser, &QComboBox::currentIndexChanged, this, [this](int index) {
const QString sudokuFile = m_chooser->itemData(index).toString();
const QVariantMap initValues = readSudoku(sudokuFile);
m_machine->submitEvent("setup", initValues);
});
const QVariantMap initValues = readSudoku(
m_chooser->itemData(0).toString());
m_machine->setInitialValues(initValues);
m_machine->connectToState("playing", [this] (bool playing) {
if (playing) {
m_startButton->setText(tr("Stop"));
m_undoButton->setEnabled(true);
m_chooser->setEnabled(false);
} else {
m_startButton->setText(tr("Start"));
m_undoButton->setEnabled(false);
m_chooser->setEnabled(true);
}
});
m_machine->connectToState("solved", [this](bool solved) {
if (solved)
m_label->setText(tr("SOLVED !!!"));
else
m_label->setText(tr("unsolved"));
});
m_machine->connectToEvent("updateGUI", [this](const QScxmlEvent &event) {
const QVariant data = event.data();
const QVariantList currentRows = data.toMap().value(
"currentState").toList();
for (int i = 0; i < currentRows.count(); i++) {
const QVariantList row = currentRows.at(i).toList();
for (int j = 0; j < row.count(); j++) {
const int value = row.at(j).toInt();
const QString text = value ? QString::number(value) : QString();
m_buttons[i][j]->setText(text);
}
}
const bool active = m_machine->isActive("playing");
const QVariantList initRows = data.toMap().value("initState").toList();
for (int i = 0; i < initRows.count(); i++) {
const QVariantList row = initRows.at(i).toList();
for (int j = 0; j < row.count(); j++) {
const int value = row.at(j).toInt();
// enable only zeroes from initState
const bool enabled = !value && active;
m_buttons[i][j]->setEnabled(enabled);
}
}
});
}
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