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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/Utf8View.h>
#include <LibWeb/Layout/LayoutBox.h>
#include <LibWeb/Layout/LayoutNode.h>
#include <LibWeb/Layout/LayoutText.h>
#include <LibWeb/Layout/LineBox.h>
#include <ctype.h>
namespace Web {
void LineBox::add_fragment(const LayoutNode& layout_node, int start, int length, int width, int height)
{
bool text_align_is_justify = layout_node.style().text_align() == CSS::TextAlign::Justify;
if (!text_align_is_justify && !m_fragments.is_empty() && &m_fragments.last().layout_node() == &layout_node) {
// The fragment we're adding is from the last LayoutNode on the line.
// Expand the last fragment instead of adding a new one with the same LayoutNode.
m_fragments.last().m_length = (start - m_fragments.last().m_start) + length;
m_fragments.last().set_width(m_fragments.last().width() + width);
} else {
m_fragments.append(make<LineBoxFragment>(layout_node, start, length, Gfx::FloatPoint(m_width, 0.0f), Gfx::FloatSize(width, height)));
}
m_width += width;
if (is<LayoutBox>(layout_node))
const_cast<LayoutBox&>(downcast<LayoutBox>(layout_node)).set_containing_line_box_fragment(m_fragments.last());
}
void LineBox::trim_trailing_whitespace()
{
while (!m_fragments.is_empty() && m_fragments.last().is_justifiable_whitespace()) {
auto fragment = m_fragments.take_last();
m_width -= fragment->width();
}
if (m_fragments.is_empty())
return;
auto last_text = m_fragments.last().text();
if (last_text.is_null())
return;
auto& last_fragment = m_fragments.last();
int space_width = last_fragment.layout_node().specified_style().font().glyph_width(' ');
while (last_fragment.length() && isspace(last_text[last_fragment.length() - 1])) {
last_fragment.m_length -= 1;
last_fragment.set_width(last_fragment.width() - space_width);
m_width -= space_width;
}
}
bool LineBox::ends_in_whitespace() const
{
if (m_fragments.is_empty())
return false;
return m_fragments.last().ends_in_whitespace();
}
}
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