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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/CSS/Length.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/HTML/HTMLHtmlElement.h>
#include <LibWeb/Page/Frame.h>
namespace Web::CSS {
float Length::relative_length_to_px(const Layout::Node& layout_node) const
{
switch (m_type) {
case Type::Ex:
return m_value * layout_node.font().x_height();
case Type::Em:
return m_value * layout_node.font_size();
case Type::Rem:
return m_value * layout_node.document().document_element()->layout_node()->font_size();
case Type::Vw:
return layout_node.document().frame()->viewport_rect().width() * (m_value / 100);
case Type::Vh:
return layout_node.document().frame()->viewport_rect().height() * (m_value / 100);
case Type::Vmin: {
auto viewport = layout_node.document().frame()->viewport_rect();
return min(viewport.width(), viewport.height()) * (m_value / 100);
}
case Type::Vmax: {
auto viewport = layout_node.document().frame()->viewport_rect();
return max(viewport.width(), viewport.height()) * (m_value / 100);
}
default:
VERIFY_NOT_REACHED();
}
}
const char* Length::unit_name() const
{
switch (m_type) {
case Type::Cm:
return "cm";
case Type::In:
return "in";
case Type::Px:
return "px";
case Type::Pt:
return "pt";
case Type::Mm:
return "mm";
case Type::Q:
return "Q";
case Type::Pc:
return "pc";
case Type::Ex:
return "ex";
case Type::Em:
return "em";
case Type::Rem:
return "rem";
case Type::Auto:
return "auto";
case Type::Percentage:
return "%";
case Type::Undefined:
return "undefined";
case Type::Vh:
return "vh";
case Type::Vw:
return "vw";
case Type::Vmax:
return "vmax";
case Type::Vmin:
return "vmin";
}
VERIFY_NOT_REACHED();
}
}
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