private void InitializeColorComboBox(Gtk.ComboBox colorChooser, ObservableCollection <FileNodeColorViewModel> colors, MenuLayoutViewModel dataContext)
{
colorChooser.SetValue(IFakeDependencyObjectHelpers.DataContextPropertyName, dataContext);
colorChooser.TooltipText = MenuLayoutViewModel.ColorTip;
foreach (var color in colors)
{
var pixbufColor = new Gdk.Pixbuf(Gdk.Colorspace.Rgb, true, 8, 14, 14);
var uintColor = (uint)((color.Fill.Red & 0xFF) << 24) | (uint)((color.Fill.Green & 0xFF) << 16) | (uint)((color.Fill.Blue & 0xFF) << 8) | 0xFF;
pixbufColor.Fill(uintColor);
var pixbuf = new Gdk.Pixbuf(Gdk.Colorspace.Rgb, true, 8, 16, 16);
pixbuf.Fill(0xFF); // black background
pixbufColor.CopyArea(0, 0, 14, 14, pixbuf, 1, 1);
ColorPixbufs[color.IntvColor] = pixbuf;
}
Gtk.CellRenderer cellRenderer = new Gtk.CellRendererPixbuf()
{
Xalign = 0
};
colorChooser.PackStart(cellRenderer, false);
colorChooser.SetCellDataFunc(cellRenderer, (l, e, m, i) => VisualHelpers.CellImageRenderer <FileNodeColorViewModel>(l, e, m, i, c => ColorPixbufs[c.IntvColor]));
cellRenderer = new Gtk.CellRendererCombo()
{
Xalign = 0, Xpad = 4
};
colorChooser.PackEnd(cellRenderer, true);
colorChooser.SetCellDataFunc(cellRenderer, (l, e, m, i) => VisualHelpers.CellTextRenderer <FileNodeColorViewModel>(l, e, m, i, c => c.Name));
var colorListStore = new Gtk.ListStore(typeof(FileNodeColorViewModel));
colorListStore.SynchronizeCollection(colors);
colorChooser.Model = colorListStore;
MenuLayoutCommandGroup.SetColorCommand.CanExecuteChanged += HandleCanExecuteSetColorChanged;
}