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LibWeb: Use HashMap::try_ensure_capacity in StyleComputer

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Thomas Queiroz 2022-12-06 03:08:20 -03:00 • committed by Andreas Kling
parent 6debd967ba
commit eacfcac932
7 changed files with 53 additions and 33 deletions
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46
Userland/Libraries/LibWeb/Layout/TreeBuilder.cpp
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@ -6,6 +6,7 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Error.h>
#include <AK/Optional.h>
#include <AK/TemporaryChange.h>
#include <LibWeb/DOM/Document.h>
@ -147,12 +148,12 @@ void TreeBuilder::insert_node_into_inline_or_block_ancestor(Layout::Node& node,
}
}
void TreeBuilder::create_pseudo_element_if_needed(DOM::Element& element, CSS::Selector::PseudoElement pseudo_element, AppendOrPrepend mode)
ErrorOr<void> TreeBuilder::create_pseudo_element_if_needed(DOM::Element& element, CSS::Selector::PseudoElement pseudo_element, AppendOrPrepend mode)
{
auto& document = element.document();
auto& style_computer = document.style_computer();
auto pseudo_element_style = style_computer.compute_style(element, pseudo_element);
auto pseudo_element_style = TRY(style_computer.compute_style(element, pseudo_element));
auto pseudo_element_content = pseudo_element_style->content();
auto pseudo_element_display = pseudo_element_style->display();
// ::before and ::after only exist if they have content. `content: normal` computes to `none` for them.
@ -160,11 +161,11 @@ void TreeBuilder::create_pseudo_element_if_needed(DOM::Element& element, CSS::Se
if (pseudo_element_display.is_none()
|| pseudo_element_content.type == CSS::ContentData::Type::Normal
|| pseudo_element_content.type == CSS::ContentData::Type::None)
return;
return {};
auto pseudo_element_node = DOM::Element::create_layout_node_for_display_type(document, pseudo_element_display, pseudo_element_style, nullptr);
if (!pseudo_element_node)
return;
return {};
pseudo_element_node->set_generated(true);
// FIXME: Handle images, and multiple values
@ -181,20 +182,22 @@ void TreeBuilder::create_pseudo_element_if_needed(DOM::Element& element, CSS::Se
element.set_pseudo_element_node({}, pseudo_element, pseudo_element_node);
insert_node_into_inline_or_block_ancestor(*pseudo_element_node, pseudo_element_display, mode);
return {};
}
void TreeBuilder::create_layout_tree(DOM::Node& dom_node, TreeBuilder::Context& context)
ErrorOr<void> TreeBuilder::create_layout_tree(DOM::Node& dom_node, TreeBuilder::Context& context)
{
// If the parent doesn't have a layout node, we don't need one either.
if (dom_node.parent_or_shadow_host() && !dom_node.parent_or_shadow_host()->layout_node())
return;
return {};
Optional<TemporaryChange<bool>> has_svg_root_change;
if (dom_node.is_svg_container()) {
has_svg_root_change.emplace(context.has_svg_root, true);
} else if (dom_node.requires_svg_container() && !context.has_svg_root) {
return;
return {};
}
auto& document = dom_node.document();
@ -210,7 +213,7 @@ void TreeBuilder::create_layout_tree(DOM::Node& dom_node, TreeBuilder::Context&
style = element.computed_css_values();
display = style->display();
if (display.is_none())
return;
return {};
layout_node = element.create_layout_node(*style);
} else if (is<DOM::Document>(dom_node)) {
style = style_computer.create_document_style();
@ -225,7 +228,7 @@ void TreeBuilder::create_layout_tree(DOM::Node& dom_node, TreeBuilder::Context&
}
if (!layout_node)
return;
return {};
if (!dom_node.parent_or_shadow_host()) {
m_layout_root = layout_node;
@ -240,10 +243,11 @@ void TreeBuilder::create_layout_tree(DOM::Node& dom_node, TreeBuilder::Context&
if ((dom_node.has_children() || shadow_root) && layout_node->can_have_children()) {
push_parent(verify_cast<NodeWithStyle>(*layout_node));
if (shadow_root)
create_layout_tree(*shadow_root, context);
verify_cast<DOM::ParentNode>(dom_node).for_each_child([&](auto& dom_child) {
create_layout_tree(dom_child, context);
});
TRY(create_layout_tree(*shadow_root, context));
// This is the same as verify_cast<DOM::ParentNode>(dom_node).for_each_child
for (auto* node = verify_cast<DOM::ParentNode>(dom_node).first_child(); node; node = node->next_sibling())
TRY(create_layout_tree(*node, context));
pop_parent();
}
@ -251,15 +255,15 @@ void TreeBuilder::create_layout_tree(DOM::Node& dom_node, TreeBuilder::Context&
if (is<DOM::Element>(dom_node)) {
auto& element = static_cast<DOM::Element&>(dom_node);
push_parent(verify_cast<NodeWithStyle>(*layout_node));
create_pseudo_element_if_needed(element, CSS::Selector::PseudoElement::Before, AppendOrPrepend::Prepend);
create_pseudo_element_if_needed(element, CSS::Selector::PseudoElement::After, AppendOrPrepend::Append);
TRY(create_pseudo_element_if_needed(element, CSS::Selector::PseudoElement::Before, AppendOrPrepend::Prepend));
TRY(create_pseudo_element_if_needed(element, CSS::Selector::PseudoElement::After, AppendOrPrepend::Append));
pop_parent();
}
if (is<ListItemBox>(*layout_node)) {
auto& element = static_cast<DOM::Element&>(dom_node);
int child_index = layout_node->parent()->index_of_child<ListItemBox>(*layout_node).value();
auto marker_style = style_computer.compute_style(element, CSS::Selector::PseudoElement::Marker);
auto marker_style = TRY(style_computer.compute_style(element, CSS::Selector::PseudoElement::Marker));
auto list_item_marker = document.heap().allocate_without_realm<ListItemMarkerBox>(document, layout_node->computed_values().list_style_type(), child_index + 1, *marker_style);
static_cast<ListItemBox&>(*layout_node).set_marker(list_item_marker);
element.set_pseudo_element_node({}, CSS::Selector::PseudoElement::Marker, list_item_marker);
@ -269,9 +273,9 @@ void TreeBuilder::create_layout_tree(DOM::Node& dom_node, TreeBuilder::Context&
if (is<HTML::HTMLProgressElement>(dom_node)) {
auto& progress = static_cast<HTML::HTMLProgressElement&>(dom_node);
if (!progress.using_system_appearance()) {
auto bar_style = style_computer.compute_style(progress, CSS::Selector::PseudoElement::ProgressBar);
auto bar_style = TRY(style_computer.compute_style(progress, CSS::Selector::PseudoElement::ProgressBar));
bar_style->set_property(CSS::PropertyID::Display, CSS::IdentifierStyleValue::create(CSS::ValueID::InlineBlock));
auto value_style = style_computer.compute_style(progress, CSS::Selector::PseudoElement::ProgressValue);
auto value_style = TRY(style_computer.compute_style(progress, CSS::Selector::PseudoElement::ProgressValue));
value_style->set_property(CSS::PropertyID::Display, CSS::IdentifierStyleValue::create(CSS::ValueID::Block));
auto position = progress.position();
value_style->set_property(CSS::PropertyID::Width, CSS::PercentageStyleValue::create(CSS::Percentage(position >= 0 ? round_to<int>(100 * position) : 0)));
@ -294,7 +298,7 @@ void TreeBuilder::create_layout_tree(DOM::Node& dom_node, TreeBuilder::Context&
auto& input_element = static_cast<HTML::HTMLInputElement&>(dom_node);
if (auto placeholder_value = input_element.placeholder_value(); placeholder_value.has_value()) {
auto placeholder_style = style_computer.compute_style(input_element, CSS::Selector::PseudoElement::Placeholder);
auto placeholder_style = TRY(style_computer.compute_style(input_element, CSS::Selector::PseudoElement::Placeholder));
auto placeholder = DOM::Element::create_layout_node_for_display_type(document, placeholder_style->display(), placeholder_style, nullptr);
auto* text = document.heap().allocate<DOM::Text>(document.realm(), document, *placeholder_value);
@ -311,6 +315,8 @@ void TreeBuilder::create_layout_tree(DOM::Node& dom_node, TreeBuilder::Context&
input_element.set_pseudo_element_node({}, CSS::Selector::PseudoElement::Placeholder, placeholder);
}
}
return {};
}
JS::GCPtr<Layout::Node> TreeBuilder::build(DOM::Node& dom_node)
@ -318,7 +324,7 @@ JS::GCPtr<Layout::Node> TreeBuilder::build(DOM::Node& dom_node)
VERIFY(dom_node.is_document());
Context context;
create_layout_tree(dom_node, context);
MUST(create_layout_tree(dom_node, context)); // FIXME propagate errors
if (auto* root = dom_node.document().layout_node())
fixup_tables(*root);