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LibGUI: Rewrite layout system in terms of min and max sizes

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This patch removes size policies and preferred sizes, and replaces them
with min-size and max-size for each widget.

Box layout now works in 3 passes:

    1) Set all items (widgets/spacers) to their min-size
    2) Distribute remaining space evenly, respecting max-size
    3) Place widgets one after the other, adding spacing in between

I've also added convenience helpers for setting a fixed size (which is
the same as setting min-size and max-size to the same value.)

This significantly reduces the verbosity of widget layout and makes GML
a bit more pleasant to write, too. :^)
This commit is contained in:
Andreas Kling 2020-12-30 01:23:32 +01:00
parent b2bba5ce5c
commit 7dc5a3ead8
83 changed files with 444 additions and 957 deletions
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4
Games/Minesweeper/Field.cpp
View file

@ -509,9 +509,9 @@ void Field::set_field_size(size_t rows, size_t columns, size_t mine_count)
m_rows = rows;
m_columns = columns;
m_mine_count = mine_count;
set_preferred_size(frame_thickness() * 2 + m_columns * square_size(), frame_thickness() * 2 + m_rows * square_size());
set_fixed_size(frame_thickness() * 2 + m_columns * square_size(), frame_thickness() * 2 + m_rows * square_size());
reset();
m_on_size_changed(preferred_size());
m_on_size_changed(min_size());
}
void Field::set_single_chording(bool enabled)