planned: add presentation_window.rs

I'm going to try to subclass QQuickWindow or View in order to control
the PresentationWindow from rust and just call the appropriate
functions from QML.

src/rust/presentation_window.rs

@@ -0,0 +1,51 @@
+#[cxx_qt::bridge]
+mod image_model {
+
+    unsafe extern "C++" {
+        include!(< QQuickWindow >);
+        include!("cxx-qt-lib/qhash.h");
+        type QHash_i32_QByteArray = cxx_qt_lib::QHash<cxx_qt_lib::QHashPair_i32_QByteArray>;
+        include!("cxx-qt-lib/qmap.h");
+        type QMap_QString_QVariant = cxx_qt_lib::QMap<cxx_qt_lib::QMapPair_QString_QVariant>;
+        include!("cxx-qt-lib/qvariant.h");
+        type QVariant = cxx_qt_lib::QVariant;
+        include!("cxx-qt-lib/qstring.h");
+        type QString = cxx_qt_lib::QString;
+        include!("cxx-qt-lib/qurl.h");
+        type QUrl = cxx_qt_lib::QUrl;
+        include!("cxx-qt-lib/qmodelindex.h");
+        type QModelIndex = cxx_qt_lib::QModelIndex;
+        include!("cxx-qt-lib/qvector.h");
+        type QVector_i32 = cxx_qt_lib::QVector<i32>;
+        include!("cxx-qt-lib/qstringlist.h");
+        type QStringList = cxx_qt_lib::QStringList;
+        include!("cxx-qt-lib/qlist.h");
+        type QList_QString = cxx_qt_lib::QList<QString>;
+    }
+
+    #[cxx_qt::qobject(base = "QQuickView")]
+    #[derive(Default, Debug)]
+    pub struct PresentationWindow {
+        highest_id: i32,
+    }
+
+    impl qobject::PresentationWindow {
+        #[qinvokable]
+        pub fn show(mut self: Pin<&mut Self>, url: &QUrl) {
+            self.set_source(url);
+            self.base_show();
+        }
+    }
+
+    // Create Rust bindings for C++ functions of the base class (QAbstractItemModel)
+    #[cxx_qt::inherit]
+    extern "C++" {}
+
+    #[cxx_qt::inherit]
+    unsafe extern "C++" {
+        #[cxx_name = "setSource"]
+        fn set_source(self: &qobject::PresentationWindow, url: &QUrl);
+        #[cxx_name = "showFullscreen"]
+        fn show_fullscreen(self: &qobject::PresentationWindow);
+    }
+}