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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
Notes: sideshowbarker 2024-07-19 00:25:30 +09:00
83 changed files with 444 additions and 957 deletions
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6
Libraries/LibGUI/HeaderView.cpp
View file

@ -45,11 +45,9 @@ HeaderView::HeaderView(AbstractTableView& table_view, Gfx::Orientation orientati
set_font(Gfx::Font::default_bold_font());
if (m_orientation == Gfx::Orientation::Horizontal) {
set_size_policy(SizePolicy::Fill, SizePolicy::Fixed);
set_preferred_size(0, 16);
set_fixed_height(16);
} else {
set_size_policy(SizePolicy::Fixed, SizePolicy::Fill);
set_preferred_size(40, 0);
set_fixed_width(40);
}
}