iOS: Make ApplicationWindow fill entire screen, including under statusbar

We take advantage of the new Qt::WindowFlag that asks the OS to maximize
the window using as much as possible of the available screen geometry,
and then make sure that the contentItem is shifted accordingly so that
it doesn't end up under the statusbar. This allow setting a custom
background image/color on the application window, or adding toolbars
or menu bars that underlay the iOS system status bar.

Change-Id: I6efab2aced7efd274a65f2524ae8c270d20de187
Reviewed-by: J-P Nurmi <jpnurmi@theqtcompany.com>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@theqtcompany.com>
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@theqtcompany.com>

1 files changed, 18 insertions, 6 deletions

diff --git a/src/controls/ApplicationWindow.qml b/src/controls/ApplicationWindow.qml
index 542cfe4e..2f019d31 100644
--- a/src/controls/ApplicationWindow.qml
+++ b/src/controls/ApplicationWindow.qml
@@ -198,11 +198,19 @@ Window {
     /*! \internal */
     default property alias data: contentArea.data
 
-    flags: Qt.Window | Qt.WindowFullscreenButtonHint |
-        Qt.WindowTitleHint | Qt.WindowSystemMenuHint | Qt.WindowMinMaxButtonsHint |
-        Qt.WindowCloseButtonHint | Qt.WindowFullscreenButtonHint
-    // QTBUG-35049: Windows is removing features we didn't ask for, even though Qt::CustomizeWindowHint is not set
-    // Otherwise Qt.Window | Qt.WindowFullscreenButtonHint would be enough
+    flags: {
+        var flags = Qt.Window | Qt.WindowFullscreenButtonHint;
+
+        // QTBUG-35049: Windows is removing features we didn't ask for, even though Qt::CustomizeWindowHint is not set
+        // Otherwise Qt.Window | Qt.WindowFullscreenButtonHint would be enough
+        flags |= Qt.WindowTitleHint | Qt.WindowSystemMenuHint | Qt.WindowMinMaxButtonsHint |
+            Qt.WindowCloseButtonHint | Qt.WindowFullscreenButtonHint
+
+        if (Settings.styleName === "iOS")
+            flags |= Qt.MaximizeUsingFullscreenGeometryHint;
+
+        return flags;
+    }
 
     Loader {
         id: panelLoader
@@ -235,8 +243,12 @@ Window {
 
         ContentItem {
             id: contentArea
-            anchors.fill: parent
             parent: __panel.contentArea
+            anchors {
+                fill: parent
+                topMargin: systemPadding.top; bottomMargin: systemPadding.bottom
+                leftMargin: systemPadding.left; rightMargin: systemPadding.right
+            }
         }
     }
 }