Implemented load, save and clear functionality.

4 files changed, 157 insertions, 4 deletions

diff --git a/src/solverwindow.cc b/src/solverwindow.cc
index 9a04e46..f900986 100644
--- a/src/solverwindow.cc
+++ b/src/solverwindow.cc
@@ -1,12 +1,16 @@
 
 #include "solverwindow.h"
 #include "sudokuwidget.h"
+#include "sudoku.h"
 
+#include <QtGui>
+#include <QDir>
 #include <QHBoxLayout>
 #include <QVBoxLayout>
-
 #include <QPushButton>
 
+const QString HOMEDIR(QDir::homePath() + "/.sudoku");
+
 SolverWindow::SolverWindow()
 {
 	QHBoxLayout *windowlayout = new QHBoxLayout();
@@ -18,14 +22,17 @@ SolverWindow::SolverWindow()
 	// 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(save()));
 	
 	// add step button
 	QPushButton *stepbutton = new QPushButton(tr("Step"));
 	sidebarlayout->addWidget(stepbutton);
+	connect(stepbutton, SIGNAL(clicked()), this, SLOT(step()));
 	
 	// add stretch
 	sidebarlayout->addStretch(1);
@@ -33,15 +40,102 @@ SolverWindow::SolverWindow()
 	// 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
-	SudokuWidget *sudokuwidget = new SudokuWidget();
-	windowlayout->addWidget(sudokuwidget);
+	solverwindow_sudokuwidget = new SudokuWidget();
+	windowlayout->addWidget(solverwindow_sudokuwidget);
 	
 	// 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.value(row, column) = i;
+		}
+	}
+	solverwindow_sudokuwidget->set_values(sudoku);
+	
+	file.close();
+	
+	QApplication::restoreOverrideCursor();
 }
+
+void SolverWindow::save()
+{
+	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.value(row, column) << '\n';
+		}
+	}
+	
+	file.close();
+	
+	QApplication::restoreOverrideCursor();
+
+	return;
+}
+
+void SolverWindow::clear()
+{
+	Sudoku sudoku;
+	solverwindow_sudokuwidget->set_values(sudoku);
+}
+
+void SolverWindow::step()
+{
+}
\ No newline at end of file
diff --git a/src/solverwindow.h b/src/solverwindow.h
index 4743332..886e721 100644
--- a/src/solverwindow.h
+++ b/src/solverwindow.h
@@ -4,12 +4,24 @@
 
 #include <QWidget>
 
+class SudokuWidget;
+
 class SolverWindow : public QWidget
 {
 	Q_OBJECT
 	
 public:
 	SolverWindow();
+
+public slots:
+	
+	void load();
+	void save();
+	void step();
+	void clear();
+	
+private:
+	SudokuWidget	*solverwindow_sudokuwidget;
 };
 
 #endif // __INCLUDED_SUDOKUSOLVER_SOLVERWINDOW__
\ No newline at end of file
diff --git a/src/sudokuwidget.cc b/src/sudokuwidget.cc
index ef60e67..742798f 100644
--- a/src/sudokuwidget.cc
+++ b/src/sudokuwidget.cc
@@ -3,6 +3,7 @@
 
 #include <QLineEdit>
 #include <QGridLayout>
+#include <QString>
 
 SudokuWidget::SudokuWidget()
 {
@@ -10,11 +11,45 @@ SudokuWidget::SudokuWidget()
 	
 	for (int row = 0; row < 9; row++) {
 		for (int column = 0; column < 9 ; column++) {
+			
 			sudokuwidget_value[row][column] = new QLineEdit();
+			sudokuwidget_value[row][column]->setFrame(false);
+			sudokuwidget_value[row][column]->setAlignment(Qt::AlignCenter);
+			
 			gridlayout->addWidget(sudokuwidget_value[row][column], row, column);
 		}
-			
 	}
 	
 	setLayout(gridlayout);
+}
+
+void SudokuWidget::set_values(const Sudoku & values)
+{
+	for (int row = 0; row < 9; row++) {
+		for (int column = 0; column < 9 ; column++) {
+			int i = values.value(row, column);
+			if (i > 0) {
+				QString str = QString::number(i);		
+				sudokuwidget_value[row][column]->setText(str);
+			} else {
+				sudokuwidget_value[row][column]->clear();
+			}
+		}
+	}
+}
+
+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.value(row, column) = i;
+			} else {
+				values.value(row, column) = 0;
+			}
+		}
+	}	
 }
\ No newline at end of file
diff --git a/src/sudokuwidget.h b/src/sudokuwidget.h
index 59e4f3c..06d1b6f 100644
--- a/src/sudokuwidget.h
+++ b/src/sudokuwidget.h
@@ -5,6 +5,8 @@
 #include <QtGui>
 #include <QWidget>
 
+#include "sudoku.h"
+
 class QLineEdit;
 
 class SudokuWidget : public QWidget
@@ -13,6 +15,16 @@ class SudokuWidget : public QWidget
 	
 public:
 	SudokuWidget();
+	
+	/**
+	 * @brief set widgets value from sudoku values
+	 * */
+	void set_values(const Sudoku & values);
+	
+	/**
+	 * @brief set sudoku values from widget values
+	 * */
+	void get_values(Sudoku & values);
 
 private:
 	QLineEdit	* sudokuwidget_value[9][9];