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Viewing changes to search/Beagle.Search/Spinner.cs

  • Committer: Bazaar Package Importer
  • Author(s): Stefan Ebner
  • Date: 2008-05-04 00:31:32 UTC
  • mfrom: (1.1.21 upstream)
  • Revision ID: james.westby@ubuntu.com-20080504003132-2tkm5o8moo5952ri
Tags: 0.3.7-2ubuntu1
https://launchpad.net/bugs/225746
 * Merge from Debian unstable. (LP: #225746) Remaining Ubuntu changes:
  - debian/control:
    + Rename ice{weasel,dove}-beagle to {mozilla,thunderbird}-beagle and
      and update the dependencies accordingly.
    + Change Maintainer to Ubuntu Mono Team.
  - debian/rules:
    + Install the mozilla-beagle and thunderbird-beagle extensions.
  - ice{dove,weasel}.dirs:
    + Renamed to {mozilla,thunderbird}-beagle.dirs.
    + Fixed paths to point to usr/lib/{firefox,thunderbird}

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search/Beagle.Search/Spinner.cs
 
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//
 
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// Spinner.cs
 
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//
 
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// Copyright (C) 2008 Lukas Lipka <lukaslipka@gmail.com>
 
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using System;
 
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using Gtk;
 
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using Gdk;
 
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namespace Beagle.Search {
 
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        public class Spinner : Gtk.Image {
 
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                private IconTheme theme;
 
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                private Pixbuf idle_pixbuf;
 
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                private Pixbuf[] frames;
 
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                private int current_frame;
 
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                private uint timeout_id;
 
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                private const int target_size = 24;
 
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                private const int refresh_rate = 125;
 
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                public Spinner ()
 
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                {
 
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                }
 
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                ~Spinner ()
 
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                {
 
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                        Stop ();
 
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                }
 
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                public void Start ()
 
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                {
 
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                        if (!IsRealized)
 
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                                return;
 
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                        if (frames == null || frames.Length == 0)
 
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                                return;
 
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                        if (timeout_id > 0)
 
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                                return;
 
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                        timeout_id = GLib.Timeout.Add (refresh_rate, TimeoutHandler);
 
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                }
 
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                public void Stop ()
 
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                {
 
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                        if (timeout_id == 0)
 
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                                return;
 
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                        GLib.Source.Remove (timeout_id);
 
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                        timeout_id = 0;
 
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                        Pixbuf = idle_pixbuf;
 
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                }
 
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                private bool TimeoutHandler ()
 
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                {
 
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                        Pixbuf = frames [current_frame];
 
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                        current_frame = (current_frame + 1) % frames.Length;
 
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                        return true;
 
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                }
 
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                protected override void OnRealized ()
 
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                {
 
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                        base.OnRealized ();
 
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                        theme = Gtk.IconTheme.GetForScreen (Screen);
 
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                        theme.Changed += ThemeChanged;
 
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                        LoadImages ();
 
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                }
 
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                private void ThemeChanged (object o, EventArgs args)
 
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                {
 
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                        LoadImages ();
 
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                }
 
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                private void LoadImages ()
 
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                {
 
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                        int icon_size = target_size;
 
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                        // Find available spinner sizes and use the appropriate one
 
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                        foreach (int size in theme.GetIconSizes ("gnome-spinner-rest")) {
 
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                                if (size >= target_size) {
 
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                                        icon_size = size;
 
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                                        break;
 
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                                }
 
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                        }
 
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                        try {
 
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                                idle_pixbuf = theme.LoadIcon ("gnome-spinner-rest", icon_size, 0);
 
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                        } catch {
 
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                                Console.Error.WriteLine ("Could not load spinner image");
 
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                                frames = null;
 
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                                Pixbuf = null;
 
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                                return;
 
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                        }
 
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                        Gdk.Pixbuf frames_pixbuf = null;
 
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                        try {
 
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                                frames_pixbuf = theme.LoadIcon ("gnome-spinner", icon_size, 0);
 
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                        } catch {
 
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                                Console.Error.WriteLine ("Could not load spinner image");
 
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                                frames = null;
 
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                                Pixbuf = idle_pixbuf;
 
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                                return;
 
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                        }
 
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                        int frame_width = idle_pixbuf.Width, frame_height = idle_pixbuf.Height;
 
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                        int width = frames_pixbuf.Width, height = frames_pixbuf.Height;
 
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                        if (width % frame_width != 0 || height % frame_height != 0) {
 
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                                Console.Error.WriteLine ("Spinner images are wrong size");
 
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                                frames = null;
 
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                                Pixbuf = idle_pixbuf;
 
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                                return;
 
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                        }
 
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                        int rows = height / frame_height, cols = width / frame_width;
 
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                        frames = new Pixbuf [rows * cols];
 
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                        for (int y = 0, n = 0; y < rows; y++) {
 
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                                for (int x = 0; x < cols; x++) {
 
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                                        frames [n++] = new Pixbuf (frames_pixbuf,
 
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                                                                   x * frame_width,
 
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                                                                   y * frame_height,
 
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                                                                   frame_width,
 
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                                                                   frame_height);
 
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                                }
 
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                        }
 
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                        current_frame = 0;
 
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                        if (timeout_id != 0)
 
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                                Pixbuf = frames [current_frame];
 
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                        else
 
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                                Pixbuf = idle_pixbuf;
 
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                }
 
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        }
 
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}