mirror of
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133 lines
3.2 KiB
C++
133 lines
3.2 KiB
C++
/*
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* Copyright (c) 2018-2023, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/Badge.h>
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#include <AK/JsonObject.h>
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#include <LibGUI/Layout.h>
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#include <LibGUI/Widget.h>
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REGISTER_ABSTRACT_GUI_OBJECT(GUI, Layout)
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namespace GUI {
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Layout::Layout(Margins initial_margins, int spacing)
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: m_margins(initial_margins)
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, m_spacing(spacing)
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{
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REGISTER_INT_PROPERTY("spacing", spacing, set_spacing);
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REGISTER_MARGINS_PROPERTY("margins", margins, set_margins);
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register_property(
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"entries"sv,
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[this] {
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JsonArray entries_array;
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for (auto& entry : m_entries) {
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JsonObject entry_object;
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if (entry.type == Entry::Type::Widget) {
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entry_object.set("type", "Widget");
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entry_object.set("widget", (FlatPtr)entry.widget.ptr());
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} else if (entry.type == Entry::Type::Spacer) {
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entry_object.set("type", "Spacer");
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} else {
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VERIFY_NOT_REACHED();
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}
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entries_array.must_append(move(entry_object));
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}
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return entries_array;
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},
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nullptr, nullptr);
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}
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Layout::~Layout() = default;
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void Layout::notify_adopted(Badge<Widget>, Widget& widget)
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{
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if (m_owner == &widget)
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return;
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m_owner = widget;
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m_owner->for_each_child_widget([&](Widget& child) {
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add_widget(child);
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return IterationDecision::Continue;
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});
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}
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void Layout::notify_disowned(Badge<Widget>, Widget& widget)
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{
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VERIFY(m_owner == &widget);
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m_owner.clear();
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m_entries.clear();
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}
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void Layout::add_entry(Entry&& entry)
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{
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m_entries.append(move(entry));
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if (m_owner)
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m_owner->notify_layout_changed({});
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}
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void Layout::add_spacer()
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{
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add_entry(Entry { .type = Entry::Type::Spacer });
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}
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void Layout::add_layout(OwnPtr<Layout>&& layout)
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{
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Entry entry;
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entry.type = Entry::Type::Layout;
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entry.layout = move(layout);
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add_entry(move(entry));
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}
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void Layout::add_widget(Widget& widget)
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{
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add_entry(Entry {
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.type = Entry::Type::Widget,
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.widget = widget,
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});
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}
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void Layout::insert_widget_before(Widget& widget, Widget& before_widget)
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{
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Entry entry;
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entry.type = Entry::Type::Widget;
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entry.widget = widget;
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m_entries.insert_before_matching(move(entry), [&](auto& existing_entry) {
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return existing_entry.type == Entry::Type::Widget && existing_entry.widget.ptr() == &before_widget;
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});
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if (m_owner)
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m_owner->notify_layout_changed({});
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}
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void Layout::remove_widget(Widget& widget)
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{
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m_entries.remove_first_matching([&](auto& entry) {
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return entry.widget == &widget;
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});
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if (m_owner)
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m_owner->notify_layout_changed({});
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}
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void Layout::set_spacing(int spacing)
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{
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if (m_spacing == spacing)
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return;
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m_spacing = spacing;
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if (m_owner)
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m_owner->notify_layout_changed({});
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}
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void Layout::set_margins(Margins const& margins)
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{
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if (m_margins == margins)
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return;
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m_margins = margins;
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if (m_owner)
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m_owner->notify_layout_changed({});
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}
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}
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