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LibWeb: Support appearance: none for <progress> elements

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This disables this system progress bar, and instead creates one
out of pseudo elements, that can be selected and styled with the
::-webkit-progress-bar/value selectors.
This commit is contained in:
MacDue 2022-07-22 16:08:03 +01:00 • committed by Andreas Kling
parent d7d34d88e5
commit 57c6792458
3 changed files with 53 additions and 7 deletions
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19
Userland/Libraries/LibWeb/Layout/TreeBuilder.cpp
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@ -1,6 +1,7 @@
/*
* Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2022, MacDue <macdue@dueutil.tech>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -12,10 +13,12 @@
#include <LibWeb/DOM/ParentNode.h>
#include <LibWeb/DOM/ShadowRoot.h>
#include <LibWeb/Dump.h>
#include <LibWeb/HTML/HTMLProgressElement.h>
#include <LibWeb/Layout/InitialContainingBlock.h>
#include <LibWeb/Layout/ListItemBox.h>
#include <LibWeb/Layout/ListItemMarkerBox.h>
#include <LibWeb/Layout/Node.h>
#include <LibWeb/Layout/Progress.h>
#include <LibWeb/Layout/TableBox.h>
#include <LibWeb/Layout/TableCellBox.h>
#include <LibWeb/Layout/TableRowBox.h>
@ -253,6 +256,22 @@ void TreeBuilder::create_layout_tree(DOM::Node& dom_node, TreeBuilder::Context&
element.set_pseudo_element_node({}, CSS::Selector::PseudoElement::Marker, list_item_marker);
layout_node->append_child(move(list_item_marker));
}
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 value_style = style_computer.compute_style(progress, CSS::Selector::PseudoElement::ProgressValue);
auto position = progress.position();
value_style->set_property(CSS::PropertyID::Width, CSS::PercentageStyleValue::create(CSS::Percentage(position >= 0 ? round_to<int>(100 * position) : 0)));
auto progress_bar = adopt_ref(*new Layout::BlockContainer(document, nullptr, bar_style));
auto progress_value = adopt_ref(*new Layout::BlockContainer(document, nullptr, value_style));
progress_bar->append_child(*progress_value);
layout_node->append_child(*progress_bar);
progress.set_pseudo_element_node({}, CSS::Selector::PseudoElement::ProgressBar, progress_bar);
progress.set_pseudo_element_node({}, CSS::Selector::PseudoElement::ProgressValue, progress_value);
}
}
}
RefPtr<Node> TreeBuilder::build(DOM::Node& dom_node)