[gnome-devel-docs/wip/dxhackfest2013] platform-demos: add scrolledwindowexample.js

[Meg Ford (Margaret) <megford src gnome org>]

commit 7a1ee8eb8ef8515a3b4f4a0c9c8402a7bcfe926d
Author: Meg Ford <megford gnome org>
Date:   Thu Feb 21 21:23:52 2013 -0600

    platform-demos: add scrolledwindowexample.js

 platform-demos/C/scrolledwindowexample.js |   62 +++++++++++++++++++++++++++++
 1 files changed, 62 insertions(+), 0 deletions(-)
---
diff --git a/platform-demos/C/scrolledwindowexample.js b/platform-demos/C/scrolledwindowexample.js
new file mode 100644
index 0000000..ca553bb
--- /dev/null
+++ b/platform-demos/C/scrolledwindowexample.js
@@ -0,0 +1,62 @@
+#!/usr/bin/gjs
+
+const GObject = imports.gi.GObject;
+const Gtk = imports.gi.Gtk;
+const Lang = imports.lang;
+
+const ScrolledWindowExample = new Lang.Class ({
+    Name: 'ScrolledWindow Example',
+
+    // Create the application itself
+    _init: function () {
+        this.application = new Gtk.Application({ application_id: 'org.example.jscrolledwindow' });
+
+        // Connect 'activate' and 'startup' signals to the callback functions
+        this.application.connect('activate', Lang.bind(this, this._onActivate));
+        this.application.connect('startup', Lang.bind(this, this._onStartup));
+    },
+
+                                                                                                             
                                                                                                              
                                                                                                              
                                                                                                              
                                                                                                              
                                                                                                              
                                                                                                              
       
+    // Callback function for 'activate' signal presents windows when active
+    _onActivate: function() {
+        this.window.present();
+    },
+
+    // Callback function for 'startup' signal builds the UI
+    _onStartup: function() {
+        this._buildUI ();
+    },
+
+    // Build the application's UI
+    _buildUI: function() {
+        // Create the application window
+        this.window = new Gtk.ApplicationWindow  ({ application: this.application,
+                                                    window_position: Gtk.WindowPosition.CENTER,
+                                                    title: "Scrolled Window Example",
+                                                    default_width: 200,
+                                                    default_height: 200,
+                                                    border_width: 10 });
+        // the scrolledwindow
+        this.scrolledWindow = new Gtk.ScrolledWindow();
+        this.scrolledWindow.set_border_width(10);
+        // there is always the scrollbar (otherwise: AUTOMATIC - only if needed - or NEVER)
+        this.scrolledWindow.set_policy(Gtk.PolicyType.ALWAYS, Gtk.PolicyType.ALWAYS);
+        // an image - slightly larger than the window
+        this.image = new Gtk.Image();
+        this.image.set_from_file("gnome-image.png");
+
+        // add the image to the scrolledwindow
+        this.scrolledWindow.add_with_viewport(this.image);
+
+        // add the scrolledwindow to the window
+        this.window.add(this.scrolledWindow);
+        this.window.show_all();
+    }
+});
+
+// Run the application
+let app = new ScrolledWindowExample();
+app.application.run (ARGV);
+
+
+