5e9d1b2165
We don't support incremental relayout of subtrees (only single nodes) but let's not crash the browser just because this happens. We can keep the browser up and just complain in the debug log instead.
89 lines
3.2 KiB
C++
89 lines
3.2 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/DOM/ParentNode.h>
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#include <LibWeb/Layout/LayoutNode.h>
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#include <LibWeb/Layout/LayoutTable.h>
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#include <LibWeb/Layout/LayoutText.h>
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#include <LibWeb/Layout/LayoutTreeBuilder.h>
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namespace Web {
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LayoutTreeBuilder::LayoutTreeBuilder()
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{
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}
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static RefPtr<LayoutNode> create_layout_tree(Node& node, const StyleProperties* parent_style)
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{
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auto layout_node = node.create_layout_node(parent_style);
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if (!layout_node)
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return nullptr;
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if (!node.has_children())
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return layout_node;
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NonnullRefPtrVector<LayoutNode> layout_children;
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bool have_inline_children = false;
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bool have_noninline_children = false;
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to<ParentNode>(node).for_each_child([&](Node& child) {
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auto layout_child = create_layout_tree(child, &layout_node->style());
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if (!layout_child)
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return;
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if (layout_child->is_inline())
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have_inline_children = true;
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else
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have_noninline_children = true;
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layout_children.append(layout_child.release_nonnull());
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});
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for (auto& layout_child : layout_children) {
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if (have_noninline_children && have_inline_children && layout_child.is_inline()) {
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if (is<LayoutText>(layout_child) && to<LayoutText>(layout_child).text_for_style(*parent_style) == " ")
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continue;
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layout_node->inline_wrapper().append_child(layout_child);
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} else {
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layout_node->append_child(layout_child);
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}
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}
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if (have_inline_children && !have_noninline_children)
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layout_node->set_children_are_inline(true);
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return layout_node;
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}
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RefPtr<LayoutNode> LayoutTreeBuilder::build(Node& node)
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{
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if (!is<Document>(node) && node.has_children()) {
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dbg() << "FIXME: Support building partial layout trees.";
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return nullptr;
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}
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return create_layout_tree(node, nullptr);
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}
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}
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