Save and restore app's window size

closes #46

include/Config.h

@@ -11,6 +11,16 @@ static const int fontSize = 12;
 static const int emojiSize = 14;
 static const int headerFontSize = 21;
 
+// Window geometry.
+namespace window
+{
+static const int height = 600;
+static const int width = 1066;
+
+static const int minHeight = 600;
+static const int minWidth = 950;
+}
+
 // Button settings.
 namespace btn
 {

include/MainWindow.h

@@ -39,6 +39,7 @@ public:
 	~MainWindow();
 
 	static MainWindow *instance();
+	void saveCurrentWindowSize();
 
 protected:
 	void closeEvent(QCloseEvent *event);
@@ -63,6 +64,7 @@ private slots:
 
 private:
 	bool hasActiveUser();
+	void restoreWindowSize();
 
 	static MainWindow *instance_;
 

src/MainWindow.cc

@@ -15,6 +15,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "Config.h"
 #include "MainWindow.h"
 
 #include <QLayout>
@@ -35,10 +36,11 @@ MainWindow::MainWindow(QWidget *parent)
 	setObjectName("MainWindow");
 	setStyleSheet("QWidget#MainWindow {background-color: #f9f9f9}");
 
-	resize(1066, 600);  // 16:9 ratio
+	restoreWindowSize();
-	setMinimumSize(QSize(950, 600));
+	setMinimumSize(QSize(conf::window::minWidth, conf::window::minHeight));
 
-	QFont font("Open Sans", 12);
+	QFont font("Open Sans");
+	font.setPixelSize(conf::fontSize);
 	font.setStyleStrategy(QFont::PreferAntialias);
 	setFont(font);
 
@@ -95,6 +97,27 @@ MainWindow::MainWindow(QWidget *parent)
 	}
 }
 
+void MainWindow::restoreWindowSize()
+{
+	QSettings settings;
+	int savedWidth = settings.value("window/width").toInt();
+	int savedheight = settings.value("window/height").toInt();
+
+	if (savedWidth == 0 || savedheight == 0)
+		resize(conf::window::width, conf::window::height);
+	else
+		resize(savedWidth, savedheight);
+}
+
+void MainWindow::saveCurrentWindowSize()
+{
+	QSettings settings;
+	QSize current = size();
+
+	settings.setValue("window/width", current.width());
+	settings.setValue("window/height", current.height());
+}
+
 void MainWindow::removeOverlayProgressBar()
 {
 	QTimer *timer = new QTimer(this);

src/main.cc

@@ -70,5 +70,7 @@ int main(int argc, char *argv[])
 	w.move(x, y);
 	w.show();
 
+	QObject::connect(&app, &QApplication::aboutToQuit, &w, &MainWindow::saveCurrentWindowSize);
+
 	return app.exec();
 }