public TreeMapItem(Gtk.TreeModel m,
ref Gtk.TreeIter iter,
bool horiz,
int textColumn,
int weightColumn)
{
if (m == null)
throw new ArgumentNullException ("m");
if (iter.Equals (Gtk.TreeIter.Zero))
throw new ArgumentException ("iter");
if (textColumn < 0)
throw new ArgumentException ("textColumn");
if (weightColumn < 0)
throw new ArgumentException ("weightColumn");
Path = m.GetPath (iter);
Title = (string)m.GetValue (iter, textColumn);
Weight = (double)m.GetValue (iter, weightColumn);
X = 0;
Y = 0;
Width = 0;
Height = 0;
Children = null;
Horiz = horiz;
Gtk.TreeIter citer;
double c_total = 0.0;
if (m.IterChildren (out citer, iter)) {
do {
AddChild (new TreeMapItem (m, ref citer, !horiz, textColumn, weightColumn));
} while (m.IterNext (ref citer));
// Get total weight
Children.ForEach (delegate (TreeMapItem i) {
c_total += Math.Abs (i.Weight);
});
this.ChildrenWeight = c_total;
}
}
private bool reload_covers()
{
if (Timeline != null) {
Timeline.Pause ();
}
HideAll ();
Show ();
if (covers != null && covers.Count != 0) {
Console.WriteLine("ClutterFlow - Reloading Covers");
// the old current index
int old_target_index = CurrentCover!=null ? covers.IndexOf (CurrentCover) : 0;
// the newly calculated index
int new_target_index = 0;
// whether or not to keep the current cover centered
bool keep_current = false;
List<ClutterFlowBaseActor> old_covers = new List<ClutterFlowBaseActor> (
SafeGetRange (covers, old_target_index - HalfVisCovers - 1, visibleCovers + 2));
foreach (ClutterFlowBaseActor actor in covers) {
if (actor.Data.ContainsKey ("isOldCover")) {
actor.Data.Remove ("isOldCover");
}
actor.Index = -1;
if (old_covers.Contains (actor)) {
actor.Data.Add ("isOldCover", true);
}
}
ResetLetterLookup ();
List<ClutterFlowBaseActor> persistent_covers = new List<ClutterFlowBaseActor>();
covers = actor_loader.GetActors (this);
covers.ForEach (delegate (ClutterFlowBaseActor actor) {
if (actor.Data.ContainsKey ("isOldCover")) {
persistent_covers.Add (actor);
}
if (CurrentCover==actor) {
keep_current = true;
}
UpdateLetterLookup (actor);
});
InvokeLetterLookupChanged ();
if (covers.Count == 0) {
InstallEmptyActor ();
if (old_covers.Contains (EmptyActor)) {
EmptyActor.Show ();
return false;
}
keep_current = true;
}
//recalculate timeline progression and the target index
if (covers.Count > 1) {
if (keep_current) {
new_target_index = CurrentCover.Index;
} else {
if (persistent_covers.Count==0) {
new_target_index = (int) Math.Round(Timeline.Progress * (covers.Count-1));
} else if (persistent_covers.Count==1) {
new_target_index = persistent_covers[0].Index;
} else {
new_target_index = persistent_covers[(int) (((float) persistent_covers.Count * 0.5f) - 1.0f)].Index;
}
}
}
TargetIndex = new_target_index;
Timeline.JumpToTarget ();
//Console.WriteLine ("Timeline progress set to " + Timeline.Progress + " Timeline.RelativeTarget is " + Timeline.RelativeTarget);
List<ClutterFlowBaseActor> truly_pers = new List<ClutterFlowBaseActor> ();
List<ClutterFlowBaseActor> new_covers = new List<ClutterFlowBaseActor>(SafeGetRange(covers, new_target_index - HalfVisCovers - 1, visibleCovers + 2));
foreach (ClutterFlowBaseActor actor in persistent_covers) {
if (actor != null) {
if (actor.Data.ContainsKey ("isOldCover")) {
actor.Data.Remove ("isOldCover");
}
if (new_covers.Contains (actor)) {
truly_pers.Add (actor);
new_covers.Remove (actor);
old_covers.Remove (actor);
actor.Show ();
}
}
}
foreach (ClutterFlowBaseActor actor in old_covers) {
if (actor != null) {
actor.Data.Remove ("isOldCover");
}
}
/*Console.WriteLine ("old_covers contains " + old_covers.Count + " elements:");
foreach (ClutterFlowBaseActor cover in old_covers)
Console.WriteLine("\t- " + cover.Label.Replace("\n", " - "));
Console.WriteLine ("persistent_covers contains " + truly_pers.Count + " elements");
foreach (ClutterFlowBaseActor cover in truly_pers)
Console.WriteLine("\t- " + cover.Label.Replace("\n", " - "));
Console.WriteLine ("new_covers contains " + new_covers.Count + " elements");
foreach (ClutterFlowBaseActor cover in new_covers)
Console.WriteLine("\t- " + cover.Label.Replace("\n", " - "));*/
System.EventHandler update_target = delegate (object o, System.EventArgs e) {
Timeline.Play ();
InvokeCoversChanged();
};
Behaviour.FadeCoversInAndOut (old_covers, truly_pers, new_covers, update_target);
} else {
Console.WriteLine("ClutterFlow - Loading Covers");
ResetLetterLookup ();
covers = actor_loader.GetActors (this);
covers.ForEach (UpdateLetterLookup);
InvokeLetterLookupChanged ();
TargetIndex = 0;
Timeline.JumpToTarget ();
if (covers==null || covers.Count==0) {
InstallEmptyActor ();
Behaviour.UpdateActors ();
Behaviour.FadeInActor (EmptyActor);
}
Timeline.Play ();
InvokeCoversChanged ();
}
return false;
}
void UpdateBgImage()
{
m_bgImage = null;
if (TextColumn < 0 || WeightColumn < 0)
return;
m_bgImage = new Cairo.ImageSurface (Format.Rgb24, Allocation.Width, this.Allocation.Height);
using (var c = new Cairo.Context (m_bgImage))
{
// Paint the default background (linear gradient)
var g = new Cairo.LinearGradient (0, 0, 1, this.Allocation.Height);
g.AddColorStop (0.2, CairoExtensions.GdkColorToCairoColor (m_Background));
g.AddColorStop (0.9, CairoExtensions.GdkColorToCairoColor (this.Style.Background (Gtk.StateType.Normal)));
c.Rectangle (0, 0, this.Allocation.Width, this.Allocation.Height);
c.Pattern = g;
c.Paint ();
g.Dispose ();
Gtk.TreeIter iter;
List<TreeMapItem> rootItems = new List<TreeMapItem> ();
if (m_Model.GetIterFirst (out iter)) {
do {
var item = new TreeMapItem (m_Model, ref iter, true, m_TextColumn, m_WeightColumn);
rootItems.Add (item);
} while (m_Model.IterNext (ref iter));
double t = 0.0;
rootItems.ForEach (delegate (TreeMapItem i) {
t += Math.Abs (i.Weight);
});
double x = 0, y = 0, w = this.Allocation.Width, h = this.Allocation.Height;
double myx = 0, myy = 0, myw = 0, myh = 0;
rootItems.ForEach (delegate (TreeMapItem i) {
var ratio = Math.Abs (i.Weight) / t;
myx = x;
myy = y;
myw = w * ratio;
myh = h;
x += myw;
i.SetArea (myx, myy, myw, myh);
i.Render (c, m_Background);
});
// clear right away to lower refs
if (this.m_rootItems != null)
this.m_rootItems.Clear ();
this.m_rootItems = rootItems;
}
}
}