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

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

View file

@ -57,8 +57,7 @@ IRCWindow::IRCWindow(IRCClient& client, void* owner, Type type, const String& na
if (m_type == Channel) {
auto& member_view = container.add<GUI::TableView>();
member_view.set_column_headers_visible(false);
member_view.set_size_policy(GUI::SizePolicy::Fixed, GUI::SizePolicy::Fill);
member_view.set_preferred_size(100, 0);
member_view.set_fixed_width(100);
member_view.set_alternating_row_colors(false);
member_view.set_model(channel().member_model());
member_view.set_activates_on_selection(true);
@ -189,8 +188,7 @@ IRCWindow::IRCWindow(IRCClient& client, void* owner, Type type, const String& na
}
m_text_box = add<GUI::TextBox>();
m_text_box->set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
m_text_box->set_preferred_size(0, 19);
m_text_box->set_fixed_height(19);
m_text_box->on_return_pressed = [this] {
if (m_type == Channel)
m_client->handle_user_input_in_channel(m_name, m_text_box->text());