[swell-foop] Added first-run hint screen (bgo #728620)

[Robert Roth <robertroth src gnome org>]

commit 560c86b7650c4e4b70bf4de22273e752e9b4e3b1
Author: Robert Roth <robert roth off gmail com>
Date:   Thu Oct 16 23:42:25 2014 +0300

    Added first-run hint screen (bgo #728620)

 data/Makefile.am                      |    3 +-
 data/org.gnome.swell-foop.gschema.xml |    5 +++
 data/swell-foop.css                   |   15 ++++++++
 src/swell-foop.vala                   |   62 ++++++++++++++++++++++++++++++++-
 4 files changed, 83 insertions(+), 2 deletions(-)
---
diff --git a/data/Makefile.am b/data/Makefile.am
index 40aa326..b547fe8 100644
--- a/data/Makefile.am
+++ b/data/Makefile.am
@@ -5,7 +5,8 @@ gsettings_SCHEMAS = org.gnome.swell-foop.gschema.xml
 
 swelldir=$(datadir)/swell-foop
 swell_DATA = \
-    preferences.ui
+    preferences.ui \
+    swell-foop.css
 
 desktop_in_files = swell-foop.desktop.in
 desktopdir = $(datadir)/applications
diff --git a/data/org.gnome.swell-foop.gschema.xml b/data/org.gnome.swell-foop.gschema.xml
index a4438f0..da10576 100644
--- a/data/org.gnome.swell-foop.gschema.xml
+++ b/data/org.gnome.swell-foop.gschema.xml
@@ -20,6 +20,11 @@
       <summary>Board color count</summary>
       <description>The number of colors of tiles to use in the game.</description>
     </key>
+    <key name="first-run" type="b">
+      <default>true</default>
+      <summary>Is this the first run</summary>
+      <description>Setting to decide whether to show first-run hint dialog or not.</description>
+    </key>
     <key name="zealous" type="b">
       <default>true</default>
       <summary>Zealous animation</summary>
diff --git a/data/swell-foop.css b/data/swell-foop.css
new file mode 100644
index 0000000..e7db802
--- /dev/null
+++ b/data/swell-foop.css
@@ -0,0 +1,15 @@
+.welcome {
+  font-size:1.5em;
+}
+
+.tip {
+  font-size: 1em;
+}
+ 
+.play {
+  font-size: 1em;
+  padding-right:12px;
+  padding-left:12px;
+  padding-top:6px;
+  padding-bottom:6px;
+}
diff --git a/src/swell-foop.vala b/src/swell-foop.vala
index 795c133..063232a 100644
--- a/src/swell-foop.vala
+++ b/src/swell-foop.vala
@@ -53,6 +53,55 @@ public class SwellFoop : Gtk.Application
         Object (application_id: "org.gnome.swell-foop", flags: ApplicationFlags.FLAGS_NONE);
     }
 
+    private void load_css ()
+    {
+        var css_provider = new Gtk.CssProvider ();
+        var css_path = Path.build_filename (DATADIR, "swell-foop.css");
+        try
+        {
+            css_provider.load_from_path (css_path);
+        }
+        catch (GLib.Error e)
+        {
+            warning ("Error loading css styles from %s: %s", css_path, e.message);
+        }
+        Gtk.StyleContext.add_provider_for_screen (Gdk.Screen.get_default (), css_provider, 
Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION);
+    }
+
+    private Gtk.Stack build_first_run_stack ()
+    {
+        var stack = new Gtk.Stack ();
+        var first_vbox = new Gtk.Box (Gtk.Orientation.VERTICAL, 12);
+        load_css ();
+        var logo = new Gtk.Image.from_icon_name ("swell-foop", Gtk.IconSize.DIALOG );
+        logo.set_pixel_size (96);
+        first_vbox.pack_start (logo, false);
+        var label = new Gtk.Label (_("Welcome to Swell Foop"));
+        label.get_style_context ().add_class ("welcome");
+        first_vbox.pack_start (label, false);
+        label = new Gtk.Label (_("Clear as many blocks as you can.\nFewer clicks means more points."));
+        label.get_style_context ().add_class ("tip");
+        first_vbox.pack_start (label, false);
+        var play_button = new Gtk.Button.with_mnemonic (_("Let's _Play"));
+        play_button.get_style_context ().add_class ("play");
+        play_button.get_style_context ().add_class ("suggested-action");
+        play_button.valign = Gtk.Align.CENTER;
+        play_button.halign = Gtk.Align.CENTER;
+        play_button.clicked.connect (() => {
+            stack.set_transition_type (Gtk.StackTransitionType.SLIDE_UP);
+            stack.set_transition_duration (500);
+            stack.set_visible_child_name ("game");
+            settings.set_boolean ("first-run", false);
+        });
+        first_vbox.pack_start (play_button, false);
+        first_vbox.halign = Gtk.Align.CENTER;
+        first_vbox.valign = Gtk.Align.CENTER;
+        stack.add_named (first_vbox, "first-run");
+        stack.set_visible_child_name ("first-run");
+        stack.show_all ();
+        return stack;
+    }
+
     protected override void startup ()
     {
         base.startup ();
@@ -114,7 +163,18 @@ public class SwellFoop : Gtk.Application
         /* Create a clutter renderer widget */
         clutter_embed = new GtkClutter.Embed ();
         clutter_embed.show ();
-        vbox.pack_start (clutter_embed, true, true);
+        var first_run = settings.get_boolean ("first-run");
+
+        if (first_run)
+        {
+            var stack = build_first_run_stack ();
+            stack.add_named (clutter_embed, "game");
+            vbox.pack_start (stack, true, true);
+        }
+        else
+        {
+            vbox.pack_start (clutter_embed, true, true);
+        }
 
         stage = (Clutter.Stage) clutter_embed.get_stage ();
         stage.background_color = Clutter.Color.from_string ("#000000");  /* background color is black */