The problem

When the terminal is downsized beyond a certain point, the whole crate crashes.

To reproduce

Clone the repo, change to the rusty-panther directory, and run cargo test. Make sure that the last function called in tests::integration_tests::user_interaction() is window.run(), not window.quit(). Shrink the terminal's height until you get error messages.

Expected behavior

Either the terminal's size should be limited, or the crate should deal with it, and just overlap everything. Not sure which is harder to do :-/.

Desktop

Ubuntu 20.04 LTS

The widget-gridding algorithm has an error, due to inaccuracies in the calculation. When the labels are gridded in tests/integration_tests.rs, they either overlap or are too far apart.

Here are the relevant functions:

• widgets::Window::grid(): called when a new widget is added to the window.
• widgets::Window::draw_children(): draws (or re-draws) all the window's children.
• structure::Grid::get_placement_chars(): returns the placement in terminal characters of the top-left corner of the intersection of column column and row row.
• structure::Grid::get_placement_percent(): returns the placement in percent of terminal size of the top-left corner of the intersection of column and row row.
• structure::Grid::percent_to_char_width() and structure::Grid::percent_to_char_height(): return the size in chars of the terminal's width/height from a percent of the terminal's width/height, respectively.

Here's an image of the problem:

Any ideas/suggestions are greatly appreciated!