added HomeScreen.vala

src/screens/HomeScreen.vala

@@ -0,0 +1,54 @@
+class HomeScreen : Gtk.EventBox {
+    // SelectPictureDialog select_picture_dialog ;
+    public Gtk.Label title_label;
+    public HomeScreen () {
+        var is_select_dialog_opened = false ;
+        var tesseract_trigger = new TesseractTrigger () ;
+        var main_box = new Gtk.Grid () ;
+        var vbox = new VerticalBox (4) ;
+        title_label = new Gtk.Label ("TextSnatcher") ;
+        main_box.column_homogeneous = true ;
+        main_box.row_homogeneous = true ;
+        main_box.margin = 10 ;
+        title_label.get_style_context ().add_class ("h2") ;
+        var start_button = new Gtk.Button.with_label ("Snatch Now !") ;
+        start_button.get_style_context ().add_class ("start-button") ;
+        // select_picture_dialog = new SelectPictureDialog (title_label) ;
+
+        // select_picture_dialog.cancel_signal.connect (() => {
+        //     is_select_dialog_opened = false ;
+        //     select_picture_dialog.hide () ;
+        // }) ;
+
+        // select_picture_dialog.perform_signal.connect ((image_source) => {
+        //     print ("Using " + image_source) ;
+        //     tesseract_trigger.start_tess_process.begin (title_label, image_source, (obj, res) => {
+        //         select_picture_dialog.hide () ;
+        //         is_select_dialog_opened = false ;
+        //         return ;
+        //     }) ;
+        // }) ;
+
+        start_button.clicked.connect (() => {
+            // title_label.label = "Select Area to Grab !" ;
+            // trigger.start_tess_process.begin (title_label, (obj, res) => {
+            // print ("Process Done") ;
+            // }) ;
+            // if (!is_select_dialog_opened) {
+            //     select_picture_dialog.show_all () ;
+            //     is_select_dialog_opened = true ;
+            // }
+            string arg = Environment.get_variable ("XDG_SESSION_TYPE") ;
+            print (arg) ;
+	    goto_select_screen ();
+        }) ;
+        main_box.orientation = Gtk.Orientation.VERTICAL ;
+        vbox.pack_start (title_label, true, true, 5) ;
+        vbox.pack_start (start_button, true, true, 5) ;
+        main_box.add (vbox) ;
+        //main_box.show_all () ;
+        add (main_box) ;
+    }
+
+    public signal void goto_select_screen();
+}