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#include "sudokuwidget.h"
#include "settings.h"
#include <QLineEdit>
#include <QGridLayout>
#include <QString>
SudokuWidget::SudokuWidget()
{
m_showHintUnique = true;
for (int row = 0; row < 9; row++) {
for (int column = 0; column < 9 ; column++) {
sudokuwidget_value[row][column] = new QLineEdit(this);
sudokuwidget_value[row][column]->setFrame(false);
sudokuwidget_value[row][column]->setAlignment(Qt::AlignCenter);
connect(sudokuwidget_value[row][column], SIGNAL(textEdited(const QString &)), this, SLOT(verify(const QString &)));
}
}
}
void SudokuWidget::setShowHintUnique(const bool hintunique)
{
if (hintunique != m_showHintUnique) {
m_showHintUnique = hintunique;
verify();
}
}
void SudokuWidget::verify()
{
Sudoku values;
for (int row = 0; row < 9; row++) {
for (int column = 0; column < 9 ; column++) {
QPalette child_palette(palette());
bool ok;
QString str(sudokuwidget_value[row][column]->text());
int i = str.toInt(&ok);
if (ok && (i > 0) && (i <= 9)) {
values.cell(row, column).set_value(i);
} else {
values.cell(row, column).set_value(0);
QPalette child_palette(palette());
if (!sudokuwidget_value[row][column]->text().isEmpty()) {
child_palette.setColor(QPalette::Base, globalSettings().colorInputError());
}
}
sudokuwidget_value[row][column]->setPalette(child_palette);
}
}
bool solved = values.solved();
for (int row = 0; row < 9; row++) {
for (int column = 0; column < 9 ; column++) {
QPalette child_palette(palette());
int i = values.cell(row, column).value();
if ( (i > 0) && (i <= 9) ) {
// set background color depending on the validity of the cell value
if (solved) {
child_palette.setColor(QPalette::Base, globalSettings().colorSolved());
sudokuwidget_value[row][column]->setPalette(child_palette);
} else if (!values.cell(row, column).valid()) {
child_palette.setColor(QPalette::Base, globalSettings().colorInvalidValue());
sudokuwidget_value[row][column]->setPalette(child_palette);
}
} else if ((i == 0) && (m_showHintUnique)) {
// cell is empty, check if it has a unique solution
int possibilities = 0;
for (int value = 0; value < 9; value++) {
if (values.cell(row, column).possibility(value)) {
possibilities++;
}
}
if (possibilities == 1) {
child_palette.setColor(QPalette::Base, globalSettings().colorHintUnique());
sudokuwidget_value[row][column]->setPalette(child_palette);
}
}
}
}
}
void SudokuWidget::verify(const QString & text) {
verify();
}
QSize SudokuWidget::sizeHint () const
{
return QSize(512, 512);
}
void SudokuWidget::set_values(const Sudoku & values)
{
for (int row = 0; row < 9; row++) {
for (int column = 0; column < 9 ; column++) {
int i = values.cell(row, column).value();
if (i > 0) {
QString str = QString::number(i);
sudokuwidget_value[row][column]->setText(str);
} else {
sudokuwidget_value[row][column]->clear();
}
}
}
verify();
}
void SudokuWidget::get_values(Sudoku & values)
{
for (int row = 0; row < 9; row++) {
for (int column = 0; column < 9 ; column++) {
bool ok;
QString str(sudokuwidget_value[row][column]->text());
int i = str.toInt(&ok);
if (ok && (i > 0) && (i <= 9)) {
values.cell(row, column).set_value(i);
} else {
values.cell(row, column).set_value(0);
}
}
}
}
void SudokuWidget::resizeEvent(QResizeEvent *event)
{
// cell size
int sgx = width() / 9;
int sgy = height() / 9;
if (sgx > sgy) {
sgx = sgy;
} else {
sgy = sgx;
}
// offset, used to center the grid inside the widget
int offset_x = (width() - 9 * sgx) / 2;
int offset_y = (height() - 9 * sgy) / 2;
QFont font("default", 16);
font.setPixelSize(sgx / 2);
for (int row = 0; row < 9; row++) {
for (int column = 0; column < 9 ; column++) {
sudokuwidget_value[row][column]->setFont(font);
sudokuwidget_value[row][column]->setGeometry(offset_x + column * sgx + 2, offset_y + row * sgy + 2 , sgx - 4, sgy - 4);
}
}
}
void SudokuWidget::paintEvent(QPaintEvent *event)
{
if ((width() < 16) || (height() < 16))
return;
// main line color
const QColor mainlinecolor(0, 0, 0);
// subgrid line color
const QColor sublinecolor(64, 64, 64);
// subgrid size
int sgx = width() / 9;
int sgy = height() / 9;
// offset
if (sgx > sgy) {
sgx = sgy;
} else {
sgy = sgx;
}
int offset_x = (width() - 9 * sgx) / 2;
int offset_y = (height() - 9 * sgy) / 2;
// draw background
QPainter painter(this);
QPen pen(palette().color(QPalette::Base), 1, Qt::SolidLine);
painter.setPen(pen);
painter.fillRect(offset_x, offset_y, sgx * 9 , sgy * 9, palette().color(QPalette::Base));
// draw subgrid
pen.setWidth(1);
pen.setColor(palette().color(QPalette::Text));
painter.setPen(pen);
for (int i = 0; i < 9; i++) {
if ( (i % 3) > 0 ) {
painter.drawLine(offset_x, offset_y + i * sgy, offset_x + sgx * 9, offset_y + i * sgy);
painter.drawLine(offset_x + i * sgx, offset_y, offset_x +i * sgx, offset_y + sgy * 9);
}
}
// draw main grid lines
int sx = sgx * 3;
int sy = sgy * 3;
for (int i = 0; i <= 3; i++) {
if ( (i % 3) == 0) {
pen.setColor(palette().color(QPalette::WindowText));
pen.setWidth(1);
painter.setPen(pen);
} else {
pen.setColor(palette().color(QPalette::WindowText));
pen.setWidth(2);
painter.setPen(pen);
}
painter.drawLine(offset_x, offset_y + i * sy, offset_x + sx * 3, offset_y + i * sy);
painter.drawLine(offset_x + i * sx, offset_y, offset_x + i * sx, offset_y + sy * 3);
}
}
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