#329 Critical assertion on lists filled by cmdline under some circumstances

[Dmitry Butskoy]

With some combination of input data, font size and screen resolution, an assertion appears on stderr:

(yad:29277): Gtk-CRITICAL **: 01:42:08.125: gtk_box_gadget_distribute: assertion 'size >= 0' failed in GtkScrollbar

(may be repeated several times, during the work etc.).

To trigger this, a multiplying of the application font size and the value of dpi should be more than 882 ... (yep, it's a strange thing). IOW, font_size * dpi >= 882.
For example, for 96 dpi use font size of 10.

Tested on a FullHD screen, CentOS-7 with gtk3-3.22.30 .

Test case:

yad --list \
    --column=aaa \
    --column=bbb \
    a1 b1 \
    a2 b2 \
    a3 "some very very very very long text"

There are no any issues when the same data comes from stdin instead of cmdline.

The reason seems fill_data() function, invoked by list_create_widget(), is used too early, before all the stuff is completely inited.

The proposed patch run it a bit later.

With the patch the bahavior differs a bit. Previously, the first row by cmdline appears as (pre-)selected. Now no such selection (it behaves like from stdin).

[Dmitry Butskoy]

It seems the patch does not fix the issue itself (just some side effect here).

There are another test case with text-info, utilising stdin only:

echo -e 'aaa\nbbb\nsome very very very very very very long string' | yad --text-info

IOW, don't apply for now.