Check for a new version on start up (issue 27)

configure.ac

@@ -24,12 +24,12 @@ AM_PROG_VALAC([0.7.0])
 AC_PROG_INSTALL
 AC_PROG_INTLTOOL([0.35])
 
-pkg_modules="gtk+-2.0 >= 2.14.0 libavformat libavcodec >= 52.23.0"
+pkg_modules="gtk+-2.0 >= 2.18.0 libavformat libavcodec >= 52.23.0"
 PKG_CHECK_MODULES(SPEK, [$pkg_modules])
 AC_SUBST(SPEK_CFLAGS)
 AC_SUBST(SPEK_LIBS)
 
-SPEK_PACKAGES="--pkg gtk+-2.0 --pkg posix"
+SPEK_PACKAGES="--pkg gtk+-2.0 --pkg gio-2.0 --pkg posix"
 AC_SUBST(SPEK_PACKAGES)
 
 AC_CHECK_LIB(m, log10f)

src/Makefile.am

@@ -4,6 +4,7 @@ spek_SOURCES = \
 	spek.vala \
 	spek-audio.c \
 	spek-fft.c \
+	spek-message-bar.vala \
 	spek-pipeline.vala \
 	spek-ruler.vala \
 	spek-spectrogram.vala \

src/spek-message-bar.vala

@@ -0,0 +1,81 @@
+/* spek-message-bar.vala
+ *
+ * Copyright (C) 2010  Alexander Kojevnikov <alexander@kojevnikov.com>
+ *
+ * Spek is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Spek is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Spek.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * This class is heavily influenced by its namesake from Banshee.
+ * The original code by Aaron Bockover is (c) 2008 Novell, Inc.
+ */
+
+using Gtk;
+
+namespace Spek {
+	public class MessageBar : HBox {
+		private Label label;
+        private Gtk.Window win;
+
+		public MessageBar (string message) {
+			homogeneous = false;
+			spacing = 0;
+			border_width = 6;
+
+            win = new Gtk.Window (WindowType.POPUP);
+            win.name = "gtk-tooltips";
+            win.ensure_style ();
+            win.style_set.connect (() => style = win.style);
+
+			label = new Label (null);
+			label.use_markup = true;
+			label.set_markup (message);
+			label.ellipsize = Pango.EllipsizeMode.END;
+			label.xalign = 0f;
+			var button_box = new HBox (false, 0);
+			button_box.spacing = 3;
+			var close_button = new Button ();
+			close_button.image = new Gtk.Image.from_stock (STOCK_CLOSE, IconSize.MENU);
+			close_button.relief = ReliefStyle.NONE;
+			close_button.clicked.connect (() => hide ());
+
+			pack_start (label, true, true, 0);
+			pack_start (button_box, false, false, 0);
+			pack_start (close_button, false, false, 0);
+		}
+
+		private bool changing_style = false;
+		private override void style_set (Style? previous_style) {
+			if (changing_style) {
+				return;
+			}
+
+			changing_style = true;
+			style = win.style;
+			label.style = style;
+			changing_style = false;
+		}
+
+		private override bool expose_event (Gdk.EventExpose event) {
+			if (!is_drawable ()) {
+				return false;
+			}
+
+			var cr = Gdk.cairo_create (event.window);
+			var color = style.bg[StateType.NORMAL];
+			cr.set_source_rgb (color.red / 65535.0, color.green / 65535.0, color.blue / 65535.0);
+			cr.rectangle (allocation.x, allocation.y, allocation.width, allocation.height);
+			cr.fill ();
+			return base.expose_event (event);
+		}
+	}
+}

src/spek-window.vala

@@ -23,6 +23,7 @@ namespace Spek {
 	public class Window : Gtk.Window {
 
 		private const string full_title = _("Spek - Acoustic Spectrum Analyser");
+		private MessageBar message_bar;
 		private Spectrogram spectrogram;
 		private string cur_dir;
 		private FileFilter filter_all;
@@ -79,6 +80,8 @@ namespace Spek {
 			about.clicked.connect (on_about_clicked);
 			toolbar.insert (about, -1);
 
+			message_bar = new MessageBar (_("A new version of Spek is available on <a href=\"http://www.spek-project.org\">www.spek-project.org</a>"));
+
 			spectrogram = new Spectrogram ();
 			cur_dir = Environment.get_home_dir ();
 
@@ -96,9 +99,13 @@ namespace Spek {
 
 			var vbox = new VBox (false, 0);
 			vbox.pack_start (toolbar, false, true, 0);
+			vbox.pack_start (message_bar, false, true, 0);
 			vbox.pack_start (spectrogram, true, true, 0);
 			add (vbox);
-			show_all ();
+			toolbar.show_all ();
+			spectrogram.show_all ();
+			vbox.show ();
+			show ();
 
 			// Set up Drag and Drop
 			drag_dest_set (this, DestDefaults.ALL, DEST_TARGET_ENTRIES, DragAction.COPY);
@@ -107,6 +114,11 @@ namespace Spek {
 			if (file_name != null) {
 				open_file (file_name);
 			}
+
+			try {
+				Thread.create (check_version, false);
+			} catch (ThreadError e) {
+			}
 		}
 
 		void on_dropped (DragContext cx, int x, int y, SelectionData data, uint info, uint time) {
@@ -242,5 +254,26 @@ namespace Spek {
 			"*.wma",
 			"*.wv"
 		};
+
+		private void * check_version () {
+			// TODO: don't check on each start up.
+			var file = File.new_for_uri ("http://www.spek-project.org/version");
+			if (!file.query_exists (null)) {
+				return null;
+			}
+
+			string version;
+			try {
+				var stream = new DataInputStream (file.read (null));
+				version = stream.read_line (null, null);
+			} catch (Error e) {
+				return null;
+			}
+
+			if (version != null && version > Config.PACKAGE_VERSION) {
+				Idle.add (() => { message_bar.show_all (); return false; });
+			}
+			return null;
+		}
 	}
 }

web/app.yaml

@@ -14,6 +14,11 @@ handlers:
   upload: robots.txt
   mime_type: text/plain
 
+- url: /version
+  static_files: version
+  upload: version
+  mime_type: text/plain
+
 - url: /
   static_files: index.html
   upload: index.html

web/version

@@ -0,0 +1 @@
+0.5