20667dfff5
This is a bit hackish, but this way the existance of the calc() becomes transparent to the user who just wants a Length and doesn't care where it came from.
85 lines
2.1 KiB
C++
85 lines
2.1 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 <LibWeb/CSS/Length.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/HTML/HTMLHtmlElement.h>
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#include <LibWeb/Page/BrowsingContext.h>
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namespace Web::CSS {
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float Length::relative_length_to_px(const Layout::Node& layout_node) const
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{
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switch (m_type) {
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case Type::Ex:
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return m_value * layout_node.font().x_height();
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case Type::Em:
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return m_value * layout_node.font_size();
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case Type::Rem:
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return m_value * layout_node.document().document_element()->layout_node()->font_size();
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case Type::Vw:
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return layout_node.document().browsing_context()->viewport_rect().width() * (m_value / 100);
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case Type::Vh:
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return layout_node.document().browsing_context()->viewport_rect().height() * (m_value / 100);
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case Type::Vmin: {
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auto viewport = layout_node.document().browsing_context()->viewport_rect();
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return min(viewport.width(), viewport.height()) * (m_value / 100);
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}
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case Type::Vmax: {
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auto viewport = layout_node.document().browsing_context()->viewport_rect();
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return max(viewport.width(), viewport.height()) * (m_value / 100);
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}
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default:
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VERIFY_NOT_REACHED();
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}
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}
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const char* Length::unit_name() const
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{
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switch (m_type) {
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case Type::Cm:
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return "cm";
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case Type::In:
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return "in";
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case Type::Px:
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return "px";
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case Type::Pt:
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return "pt";
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case Type::Mm:
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return "mm";
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case Type::Q:
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return "Q";
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case Type::Pc:
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return "pc";
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case Type::Ex:
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return "ex";
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case Type::Em:
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return "em";
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case Type::Rem:
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return "rem";
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case Type::Auto:
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return "auto";
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case Type::Percentage:
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return "%";
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case Type::Undefined:
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return "undefined";
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case Type::Vh:
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return "vh";
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case Type::Vw:
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return "vw";
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case Type::Vmax:
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return "vmax";
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case Type::Vmin:
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return "vmin";
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case Type::Calculated:
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return "calculated";
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}
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VERIFY_NOT_REACHED();
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}
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}
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