From adc25f5f3d1798234a6c953ab8098650e6dda806 Mon Sep 17 00:00:00 2001
From: Roland Winklmeier <Roland.M.Winklmeier@gmail.com>
Date: Tue, 26 Aug 2014 22:51:07 +0200
Subject: [PATCH] refs #76 CForeignWindows

Provides static methods to get QWindow pointers to known simulators
---
 src/blackgui/foreignwindows.cpp | 66 +++++++++++++++++++++++++++++++++
 src/blackgui/foreignwindows.h   | 50 +++++++++++++++++++++++++
 2 files changed, 116 insertions(+)
 create mode 100644 src/blackgui/foreignwindows.cpp
 create mode 100644 src/blackgui/foreignwindows.h

diff --git a/src/blackgui/foreignwindows.cpp b/src/blackgui/foreignwindows.cpp
new file mode 100644
index 000000000..1f1f4f90c
--- /dev/null
+++ b/src/blackgui/foreignwindows.cpp
@@ -0,0 +1,66 @@
+/* Copyright (C) 2014
+ * swift Project Community / Contributors
+ *
+ * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution and at http://www.swift-project.org/license.html. No part of Swift Project,
+ * including this file, may be copied, modified, propagated, or distributed except according to the terms
+ * contained in the LICENSE file.
+ */
+
+#include "foreignwindows.h"
+#include <QWidget>
+#include <QWindow>
+#include <QApplication>
+
+namespace BlackGui
+{
+    QScopedPointer<IWindowFinder> CForeignWindows::m_windowFinder(IWindowFinder::create());
+
+    QWindow *CForeignWindows::getFS9Window()
+    {
+        QWindow *simulatorWindow = nullptr;
+        simulatorWindow = m_windowFinder->findForeignWindow("", "FS98MAIN");
+
+        return simulatorWindow;
+    }
+
+    QWindow *CForeignWindows::getFSXWindow()
+    {
+        QWindow *simulatorWindow = nullptr;
+        simulatorWindow = m_windowFinder->findForeignWindow("", "FS98MAIN");
+
+        return simulatorWindow;
+    }
+
+    QWindow *CForeignWindows::getXPlaneWindow()
+    {
+        QWindow *simulatorWindow = nullptr;
+        // FIXME:
+        // Use datarefs Sim/operation/windows/system window via xbus to grab the OS's native window handle
+        // http://www.xsquawkbox.net/xpsdk/mediawiki/sim%252Foperation%252Fwindows%252Fsystem_window
+        // For the time being, use IWindowFinder.
+        // The if condition is to prevent a crash on Linux/OSX.
+        if (!m_windowFinder.isNull()) simulatorWindow = m_windowFinder->findForeignWindow("X-System", "");
+
+        return simulatorWindow;
+    }
+
+    void CForeignWindows::setSimulatorAsParent(QWindow *simulatorWindow, QWidget *child)
+    {
+        if (!simulatorWindow) return;
+        if (!child) return;
+
+        bool isVisible = child->isVisible();
+
+        // If visible, hide it during the reparent. Otherwise setting the parent will have no effect.
+        if (isVisible) child->hide();
+
+        QWindow *childWindow = child->windowHandle();
+        Q_ASSERT_X(childWindow, "CForeignWindows::setSimulatorAsParent", "Native resources for child widget have not yet been allocated. Did you call QWidget::show() before?");
+
+        childWindow->setTransientParent(simulatorWindow);
+
+        // If it was visible before, make it visible again
+        if (isVisible) child->show();
+    }
+}
diff --git a/src/blackgui/foreignwindows.h b/src/blackgui/foreignwindows.h
new file mode 100644
index 000000000..3ad6b10fa
--- /dev/null
+++ b/src/blackgui/foreignwindows.h
@@ -0,0 +1,50 @@
+/* Copyright (C) 2014
+ * swift Project Community / Contributors
+ *
+ * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
+ * directory of this distribution and at http://www.swift-project.org/license.html. No part of Swift Project,
+ * including this file, may be copied, modified, propagated, or distributed except according to the terms
+ * contained in the LICENSE file.
+ */
+
+//! \file
+
+#ifndef BLACKGUI_FOREIGNWINDOWS_H
+#define BLACKGUI_FOREIGNWINDOWS_H
+
+#include "blacksim/simulatorinfo.h"
+#include "windowfinder.h"
+#include <QWindow>
+#include <QWidget>
+#include <QScopedPointer>
+
+namespace BlackGui
+{
+    //! Foreign windows
+    class CForeignWindows
+    {
+
+    public:
+
+        //! FS9 window
+        static QWindow *getFS9Window();
+
+        //! FSX window
+        static QWindow *getFSXWindow();
+
+        //! X-Plane window
+        static QWindow *getXPlaneWindow();
+
+        //! Set simulator as transient parent for child widget
+        static void setSimulatorAsParent(QWindow *simulatorWindow, QWidget *child);
+
+    private:
+
+        //! Constructor, use static methods only
+        CForeignWindows() {}
+
+        static QScopedPointer<IWindowFinder> m_windowFinder;
+    };
+}
+
+#endif // guard