Do not use saved position if it falls outside of primary screen

- Only use saved position if the coordinates fall inside of the primary screen
  Prevents problems for people with laptops that sometimes but not always use
  external screens.
- Since we now set window position in C++ instead of QML, drop the
  dependency on qml-module-qt-labs-settings module.

Closes #91

README.md

@@ -18,7 +18,7 @@ Install the build dependencies:
 ```
 sudo apt install --no-install-recommends build-essential devscripts debhelper cmake git libarchive-dev libcurl4-openssl-dev \
     qtbase5-dev qtbase5-dev-tools qtdeclarative5-dev libqt5svg5-dev qttools5-dev qt5-default libssl-dev \
-    qml-module-qtquick2 qml-module-qtquick-controls2 qml-module-qt-labs-settings qml-module-qtquick-layouts qml-module-qtquick-templates2 qml-module-qtquick-window2 qml-module-qtgraphicaleffects
+    qml-module-qtquick2 qml-module-qtquick-controls2 qml-module-qtquick-layouts qml-module-qtquick-templates2 qml-module-qtquick-window2 qml-module-qtgraphicaleffects
 ```
 
 #### Get the source

debian/control

@@ -4,14 +4,14 @@ Priority: optional
 Maintainer: Floris Bos <bos@je-eigen-domein.nl>
 Build-Depends: debhelper (>= 10), cmake, libarchive-dev, libcurl4-openssl-dev | libcurl4-gnutls-dev,  
  qtbase5-dev, qtbase5-dev-tools, qtdeclarative5-dev, libqt5svg5-dev, qttools5-dev, libssl-dev,
- qml-module-qtquick2, qml-module-qtquick-controls2, qml-module-qt-labs-settings, qml-module-qtquick-layouts, qml-module-qtquick-templates2, qml-module-qtquick-window2, qml-module-qtgraphicaleffects
+ qml-module-qtquick2, qml-module-qtquick-controls2, qml-module-qtquick-layouts, qml-module-qtquick-templates2, qml-module-qtquick-window2, qml-module-qtgraphicaleffects
 Standards-Version: 4.1.2
 Homepage: https://www.raspberrypi.org/
 
 Package: rpi-imager
 Architecture: any
 Depends: ${shlibs:Depends}, ${misc:Depends}, 
- qml-module-qtquick2, qml-module-qtquick-controls2, qml-module-qt-labs-settings, qml-module-qtquick-layouts, qml-module-qtquick-templates2, qml-module-qtquick-window2, qml-module-qtgraphicaleffects,
+ qml-module-qtquick2, qml-module-qtquick-controls2, qml-module-qtquick-layouts, qml-module-qtquick-templates2, qml-module-qtquick-window2, qml-module-qtgraphicaleffects,
  dosfstools, fdisk 
 Recommends: udisks2
 Description: Raspberry Pi imaging utility

main.cpp

@@ -18,6 +18,7 @@
 #include <QTranslator>
 #include <QLocale>
 #include <QScreen>
+#include <QSettings>
 #ifndef QT_NO_WIDGETS
 #include <QtWidgets/QApplication>
 #endif
@@ -164,7 +165,48 @@ int main(int argc, char *argv[])
     qmlwindow->connect(&imageWriter, SIGNAL(finalizing()), qmlwindow, SLOT(onFinalizing()));
     qmlwindow->connect(&imageWriter, SIGNAL(networkOnline()), qmlwindow, SLOT(fetchOSlist()));
 
+#ifndef QT_NO_WIDGETS
+    QSettings settings;
+
+    /* Set window position */
+    auto screensize = app.primaryScreen()->geometry();
+    int x = settings.value("General/x", -1).toInt();
+    int y = settings.value("General/y", -1).toInt();
+    int w = qmlwindow->property("width").toInt();
+    int h = qmlwindow->property("height").toInt();
+
+    if (x != -1 && y != -1)
+    {
+        if ( (screensize.width()-x) < w || (screensize.height()-y) < h)
+        {
+            qDebug() << "Not restoring saved window position as it falls outside of primary screen";
+            x = y = -1;
+        }
+    }
+
+    if (x == -1 || y == -1)
+    {
+        x = qMax(1, (screensize.width()-w)/2);
+        y = qMax(1, (screensize.height()-h)/2);
+    }
+
+    qmlwindow->setProperty("x", x);
+    qmlwindow->setProperty("y", y);
+#endif
+
     int rc = app.exec();
+
+#ifndef QT_NO_WIDGETS
+    int newX = qmlwindow->property("x").toInt();
+    int newY = qmlwindow->property("y").toInt();
+    if (x != newX || y != newY)
+    {
+        settings.setValue("General/x", newX);
+        settings.setValue("General/y", newY);
+        settings.sync();
+    }
+#endif
+
     return rc;
 }
 

main.qml

@@ -8,7 +8,6 @@ import QtQuick.Window 2.2
 import QtQuick.Controls 2.2
 import QtQuick.Layouts 1.0
 import QtQuick.Controls.Material 2.2
-import Qt.labs.settings 1.0
 
 ApplicationWindow {
     id: window
@@ -768,13 +767,6 @@ ApplicationWindow {
         }
     }
 
-    /* Persistent settings */
-    Settings {
-        category: "General"
-        property alias x: window.x
-        property alias y: window.y
-    }
-
     /* Utility functions */
     function httpRequest(url, callback) {
         var xhr = new XMLHttpRequest();