How to get row in ColumnView for right click

[shartrec (Trevor Campbell)]

I’m using Rust so appologies for the Rust rather than C++ code here

Using the following I show a popup when right lick on ColumnView

let gesture = gtk::GestureClick::new();
            gesture.set_button(3);
            gesture.connect_released(clone!(@weak self as view => move | gesture, _n, x, y| {
                gesture.set_state(gtk::EventSequenceState::Claimed);
                if let Some(popover) = view.popover.borrow().as_ref() {
                        popover.set_pointing_to(Some(&Rectangle::new(x as i32, y as i32, 1, 1)));
                        popover.popup();
                };
            }));
            self.airport_list.add_controller(gesture);

I am showing a popup on right click. No problem there, but I cannot find a way to get the row the mouse is over when clicked.

By comparison, for the now deprecated TreeView, the gesture would also select the row when right clicked

[gwillems]

Hi,

In the factory’s bind, just make sure to give the row widget a reference to the model’s row item. You may do that with GObject.Object.set_data, or by creating your own row widget subclass with a custom “model item” property.

Then, in the gesture’s callback, you can get the row widget under the mouse with Gtk.Widget.pick, and then the model item with GObject.Object.get_data (or by getting the property if you used a subclass).

[gwillems]

Another way is to add gestures to each row widget instead of the columnview.

Then, in bind, connect the callback and pass the model item as user_data.
And disconnect the callback in unbind.

[shartrec (Trevor Campbell)]

Thanks @gwillems. I tried adding gestures to the row widget, but it appears Gtk.ColumnViewRow is not a widget. I guess the other idea of using Gtk.Widget.pick would have the same issue, but I suppose I could attach required data to each column’s widget instead, but that seems very clumsy.

I’ll try something along those lines.

[shartrec (Trevor Campbell)]

Sort of works but difficult. Gtk.Widget.pick returns either a Label, a Cell or a Row depending on exactly where the click occurs. I can then get the widget children to get a Label widget, which is where I did the set_data. I then need to get that data and put it into some “global” variable to get in the action. Added to this all the set_data()/data() calls are “unsafe” in Rust terms and I have managed to raise a number of memory access errors.

I think I’ll just change to use Gtk.ColumnView:single-click-activate which avoids the original issue altogether.