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https://github.com/RGBCube/serenity
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1682f0b760
SPDX License Identifiers are a more compact / standardized way of representing file license information. See: https://spdx.dev/resources/use/#identifiers This was done with the `ambr` search and replace tool. ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
81 lines
2.6 KiB
C++
81 lines
2.6 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/QuickSort.h>
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#include <AK/StringBuilder.h>
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#include <LibWeb/DOM/Node.h>
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#include <LibWeb/Layout/Box.h>
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#include <LibWeb/Layout/InitialContainingBlockBox.h>
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#include <LibWeb/Painting/StackingContext.h>
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namespace Web::Layout {
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StackingContext::StackingContext(Box& box, StackingContext* parent)
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: m_box(box)
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, m_parent(parent)
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{
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VERIFY(m_parent != this);
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if (m_parent) {
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m_parent->m_children.append(this);
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// FIXME: Don't sort on every append..
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quick_sort(m_parent->m_children, [](auto& a, auto& b) {
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return a->m_box.computed_values().z_index().value_or(0) < b->m_box.computed_values().z_index().value_or(0);
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});
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}
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}
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void StackingContext::paint(PaintContext& context, PaintPhase phase)
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{
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if (!is<InitialContainingBlockBox>(m_box)) {
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m_box.paint(context, phase);
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} else {
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// NOTE: InitialContainingBlockBox::paint() merely calls StackingContext::paint()
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// so we call its base class instead.
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downcast<InitialContainingBlockBox>(m_box).BlockBox::paint(context, phase);
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}
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for (auto* child : m_children) {
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child->paint(context, phase);
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}
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}
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HitTestResult StackingContext::hit_test(const Gfx::IntPoint& position, HitTestType type) const
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{
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HitTestResult result;
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if (!is<InitialContainingBlockBox>(m_box)) {
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result = m_box.hit_test(position, type);
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} else {
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// NOTE: InitialContainingBlockBox::hit_test() merely calls StackingContext::hit_test()
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// so we call its base class instead.
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result = downcast<InitialContainingBlockBox>(m_box).BlockBox::hit_test(position, type);
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}
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int z_index = m_box.computed_values().z_index().value_or(0);
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for (auto* child : m_children) {
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int child_z_index = child->m_box.computed_values().z_index().value_or(0);
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if (result.layout_node && (child_z_index < z_index))
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continue;
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auto result_here = child->hit_test(position, type);
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if (result_here.layout_node)
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result = result_here;
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}
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return result;
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}
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void StackingContext::dump(int indent) const
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{
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StringBuilder builder;
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for (int i = 0; i < indent; ++i)
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builder.append(' ');
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builder.appendff("SC for {}({}) {} [children: {}]", m_box.class_name(), m_box.dom_node() ? m_box.dom_node()->node_name().characters() : "(anonymous)", m_box.absolute_rect().to_string().characters(), m_children.size());
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dbgln("{}", builder.string_view());
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for (auto& child : m_children)
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child->dump(indent + 1);
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}
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}
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