QPA offscreen: make platform plugin configurable

Add ability to load a json config file containing screen
configuration at startup. The config file location
is specified using platform options:

    -platform offscfreen:configfile=/path/to/file

Config file format example:
{
    “screens”: [
        {
        "name", "screen-1",
        "x", 0,
        "y", 0,
        "width", 640,
        "height", 480,
        "dpi", 96,
        "dpr", 1,
        },
        …
    ]
}

Change-Id: Iac21aaafa6d0f361bdd6f6e9168b7e68db6ae011
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/plugins/platforms/offscreen/qoffscreenwindow.h b/src/plugins/platforms/offscreen/qoffscreenwindow.h
index e1f37bb034..32b8ca33cb 100644
--- a/src/plugins/platforms/offscreen/qoffscreenwindow.h
+++ b/src/plugins/platforms/offscreen/qoffscreenwindow.h
@@ -50,7 +50,7 @@ QT_BEGIN_NAMESPACE
 class QOffscreenWindow : public QPlatformWindow
 {
 public:
-    QOffscreenWindow(QWindow *window);
+    QOffscreenWindow(QWindow *window, bool frameMarginsEnabled);
     ~QOffscreenWindow();
 
     void setGeometry(const QRect &rect) override;
@@ -74,6 +74,7 @@ private:
     bool m_positionIncludesFrame;
     bool m_visible;
     bool m_pendingGeometryChangeOnShow;
+    bool m_frameMarginsRequested;
     WId m_winId;
 
     static QHash<WId, QOffscreenWindow *> m_windowForWinIdHash;