plugins/LoadProgress.cs

   1 using System;
   2 using Gtk;
   3 using WebKit;
   4 using bytex64.WebThing;
   5
   6 public class LoadThrobber : Gtk.DrawingArea {
   7         public enum Mode {
   8                 LoadStarted,
   9                 LoadInProgress,
  10                 LoadFinished
  11         };
  12         public Mode LoadState;
  13         int r;
  14         uint idletimer;
  15
  16         public LoadThrobber(WebThing wt) {
  17                 LoadState = Mode.LoadStarted;
  18
  19                 wt.WebView.LoadStarted += WebView_LoadStarted;
  20                 wt.WebView.LoadCommitted += WebView_LoadCommitted;
  21                 wt.WebView.LoadProgressChanged += WebView_LoadProgressChanged;
  22                 wt.WebView.LoadFinished += WebView_LoadFinished;
  23
  24                 SetSizeRequest(64, 64);
  25         }
  26
  27         protected override bool OnExposeEvent(Gdk.EventExpose e) {
  28                 Gdk.Window w = e.Window;
  29                 Gdk.GC gc = new Gdk.GC(w);
  30                 int width, height;
  31                 w.GetSize(out width, out height);
  32
  33                 gc.Foreground = new Gdk.Color(0, 0, 0);
  34                 gc.SetLineAttributes(3, Gdk.LineStyle.Solid, Gdk.CapStyle.Butt, Gdk.JoinStyle.Round);
  35                 w.Clear();
  36
  37                 switch(LoadState) {
  38                 case Mode.LoadStarted:
  39                         w.DrawArc(gc, false, 4, 4, width-8, width-8, -r*64, 90*64);
  40                         w.DrawArc(gc, false, 4, 4, width-8, width-8, -r*64 + 180*64, 90*64);
  41                         r += 5;
  42                         break;
  43                 case Mode.LoadInProgress:
  44                 case Mode.LoadFinished:
  45                         w.DrawArc(gc, false, 4, 4, width-8, width-8, 90*64, -r*64);
  46                         break;
  47                 }
  48                 return true;
  49         }
  50
  51         void WebView_LoadStarted(object o, LoadStartedArgs e) {
  52                 this.Show();
  53                 Console.WriteLine("Loading Started");
  54                 LoadState = Mode.LoadStarted;
  55                 idletimer = GLib.Timeout.Add(100, delegate {
  56                         QueueDraw();
  57                         return true;
  58                 });
  59         }
  60
  61         void WebView_LoadCommitted(object o, LoadCommittedArgs e) {
  62                 Console.WriteLine("Loading Committed");
  63                 LoadState = Mode.LoadInProgress;
  64                 GLib.Source.Remove(idletimer);
  65                 r = 0;
  66                 QueueDraw();
  67         }
  68
  69         void WebView_LoadProgressChanged(object o, LoadProgressChangedArgs e) {
  70                 Console.WriteLine("Loading Progress: {0}", e.Progress);
  71                 r = (int) ((e.Progress / 100.0) * 360);
  72                 QueueDraw();
  73         }
  74
  75         void WebView_LoadFinished(object o, LoadFinishedArgs e) {
  76                 Console.WriteLine("Loading Finished");
  77                 LoadState = Mode.LoadFinished;
  78                 this.Hide();
  79         }
  80 }
  81
  82 public class Plugin {
  83         public Plugin(WebThing wt) {
  84                 LoadThrobber lt = new LoadThrobber(wt);
  85                 wt.AttachWidget(lt, CompassDirection.Interior);
  86         }
  87 }