[Gtk-sharp-list] How to Give a TreeView Row a Different Color?
andy at brdstudio.net
Sun May 9 15:43:16 EDT 2010
Well I stand corrected, and pleasently so, I look forward to trying this.
On 5/9/2010 3:29 PM, Adam Tauno Williams wrote:
> On Sun, 2010-05-09 at 14:20 -0400, Andy York wrote:
>> In Gtk it is not common to alter the row color as it is controlled by
>> the currently installed theme. I have had minor success with altering
>> the appearance of widgets without changing the theme but it has been a
>> frustrating task to say the least.
> Actually it is pretty straight forward. But you apply the change via
> *cell* not *row*. For example I have a method like -
> internal static void Effect(
> Gtk.TreeModel _model,
> Gtk.TreeIter _iter,
> Gtk.CellRendererText _cell,
> Whitemice.ZOGI.Task _task)
> /* Apply the "green bar effect" to make reading easier for older
> users */
> if((_model.GetPath(_iter).Indices % 2) == 1)
> _cell.BackgroundGdk = GUI.ColorForKey("oddRowBackground");
> else _cell.BackgroundGdk =
> /* Make overdue tasks red and upcoming tasks blue */
> if ((DateTime.Today> _task.End)&& (_task.IsActive))
> _cell.ForegroundGdk = GUI.ColorForKey("overdueForeground");
> else if (_task.Start> DateTime.Today)
> _cell.ForegroundGdk = GUI.ColorForKey("upcomingForeground");
> else _cell.ForegroundGdk =
> } /* End Effect */
> - which gets called by all of the render methods, such as -
> internal static void RenderTitle(
> Gtk.TreeViewColumn _column,
> Gtk.CellRenderer _cell,
> Gtk.TreeModel _model,
> Gtk.TreeIter _iter)
> Task task = IterTask(_model, _iter);
> if(task == null)
> task = (Task)_model.GetValue(_iter, 0);
> (_cell as Gtk.CellRendererText).Text = task.Name;
> Effect(_model, _iter, (_cell as Gtk.CellRendererText), task);
> } /* End RenderTitle */
> This does mean you have to have render methods for every column; but,
> honestly, you end up having to have lots of methods to do anything
> useful with the horror that is TreeView anyway.
> So you add columns to the TreeView like -
> column = new Gtk.TreeViewColumn ();
> column.Title = "Project";
> column.Reorderable = true;
> column.Resizable = true;
> column.Clickable = true;
> cell = new Gtk.CellRendererText ();
> column.PackStart(cell, true);
> new Gtk.TreeCellDataFunc(RenderProject));
> - then RenderProject calls Effect.
> Verbose, and kinda ugly, but it works 100% of the time; and you avoid
> the silly madness that is the whole theme-thing.
> I'm certain there is a faster and more elegant way to do the same thing
> via Hyena - by there is no documentation. :(
> No virus found in this incoming message.
> Checked by AVG - www.avg.com
> Version: 9.0.819 / Virus Database: 271.1.1/2863 - Release Date: 05/09/10 02:26:00
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Gtk-sharp-list