void box::finish(bool last_box)
{
if (_type == box_block)
{
if (!m_element) return;
css_offsets offsets;
if (m_element->get_element_position(&offsets) == element_position_relative)
{
if (!offsets.left.is_predefined())
{
m_element->m_pos.x += offsets.left.calc_percent(m_box_right - m_box_left);
}
else if (!offsets.right.is_predefined())
{
m_element->m_pos.x -= offsets.right.calc_percent(m_box_right - m_box_left);
}
if (!offsets.top.is_predefined())
{
int h = 0;
if (offsets.top.units() == css_units_percentage)
{
if (m_element->parent())
{
m_element->parent()->get_predefined_height(h);
}
}
m_element->m_pos.y += offsets.top.calc_percent(h);
}
else if (!offsets.bottom.is_predefined())
{
int h = 0;
if (offsets.bottom.units() == css_units_percentage)
{
if (m_element->parent())
{
m_element->parent()->get_predefined_height(h);
}
}
m_element->m_pos.y -= offsets.bottom.calc_percent(h);
}
}
}
else
{
if (is_empty() || (!is_empty() && last_box && is_break_only()))
{
m_height = 0;
return;
}
for (auto i = m_items.rbegin(); i != m_items.rend(); i++)
{
if ((*i)->is_white_space() || (*i)->is_break())
{
if (!(*i)->m_skip)
{
(*i)->m_skip = true;
m_width -= (*i)->width();
}
}
else
{
break;
}
}
int base_line = m_font_metrics.base_line();
int line_height = m_line_height;
int add_x = 0;
switch (m_text_align)
{
case text_align_right:
if (m_width < (m_box_right - m_box_left))
{
add_x = (m_box_right - m_box_left) - m_width;
}
break;
case text_align_center:
if (m_width < (m_box_right - m_box_left))
{
add_x = ((m_box_right - m_box_left) - m_width) / 2;
}
break;
default:
add_x = 0;
}
m_height = 0;
// find line box baseline and line-height
for (auto &i : m_items)
{
if (i->get_display() == display_inline_text)
{
font_metrics fm;
i->get_font(&fm);
base_line = std::max(base_line, fm.base_line());
line_height = std::max(line_height, i->line_height());
m_height = std::max(m_height, fm.height);
}
i->m_pos.x += add_x;
}
if (m_height)
{
base_line += (line_height - m_height) / 2;
}
m_height = line_height;
int y1 = 0;
int y2 = m_height;
for (auto &i : m_items)
{
if (i->get_display() == display_inline_text)
{
font_metrics fm;
i->get_font(&fm);
i->m_pos.y = m_height - base_line - fm.ascent;
}
else
{
switch (i->get_vertical_align())
{
case va_super:
case va_sub:
case va_baseline:
i->m_pos.y = m_height - base_line - i->height() + i->get_base_line() + i->content_margins_top();
break;
case va_top:
i->m_pos.y = y1 + i->content_margins_top();
break;
case va_text_top:
i->m_pos.y = m_height - base_line - m_font_metrics.ascent + i->content_margins_top();
break;
case va_middle:
i->m_pos.y = m_height - base_line - m_font_metrics.x_height / 2 - i->height() / 2 + i->content_margins_top();
break;
case va_bottom:
i->m_pos.y = y2 - i->height() + i->content_margins_top();
break;
case va_text_bottom:
i->m_pos.y = m_height - base_line + m_font_metrics.descent - i->height() + i->content_margins_top();
break;
}
y1 = std::min(y1, i->top());
y2 = std::max(y2, i->bottom());
}
}
css_offsets offsets;
for (auto &i : m_items)
{
i->m_pos.y -= y1;
i->m_pos.y += m_box_top;
if (i->get_display() != display_inline_text)
{
switch (i->get_vertical_align())
{
case va_top:
i->m_pos.y = m_box_top + i->content_margins_top();
break;
case va_bottom:
i->m_pos.y = m_box_top + (y2 - y1) - i->height() + i->content_margins_top();
break;
case va_baseline:
//TODO: process vertical align "baseline"
break;
case va_middle:
//TODO: process vertical align "middle"
break;
case va_sub:
//TODO: process vertical align "sub"
break;
case va_super:
//TODO: process vertical align "super"
break;
case va_text_bottom:
//TODO: process vertical align "text-bottom"
break;
case va_text_top:
//TODO: process vertical align "text-top"
break;
}
}
// update position for relative positioned elements
if (i->get_element_position(&offsets) == element_position_relative)
{
if (!offsets.left.is_predefined())
{
i->m_pos.x += offsets.left.calc_percent(m_box_right - m_box_left);
}
else if (!offsets.right.is_predefined())
{
i->m_pos.x -= offsets.right.calc_percent(m_box_right - m_box_left);
}
if (!offsets.top.is_predefined())
{
// TODO: m_line_height is not correct here
i->m_pos.y += offsets.top.calc_percent(m_line_height);
}
else if (!offsets.bottom.is_predefined())
{
// TODO: m_line_height is not correct here
i->m_pos.y -= offsets.bottom.calc_percent(m_line_height);
}
}
}
m_height = y2 - y1;
m_baseline = (base_line - y1) - (m_height - line_height);
}
}
void litehtml::line_box::finish(bool last_box)
{
if( is_empty() || (!is_empty() && last_box && is_break_only()) )
{
m_height = 0;
return;
}
for(auto i = m_items.rbegin(); i != m_items.rend(); i++)
{
if((*i)->is_white_space() || (*i)->is_break())
{
if(!(*i)->m_skip)
{
(*i)->m_skip = true;
m_width -= (*i)->width();
}
} else
{
break;
}
}
int base_line = m_font_metrics.base_line();
int line_height = m_line_height;
int add_x = 0;
switch(m_text_align)
{
case text_align_right:
if(m_width < (m_box_right - m_box_left))
{
add_x = (m_box_right - m_box_left) - m_width;
}
break;
case text_align_center:
if(m_width < (m_box_right - m_box_left))
{
add_x = ((m_box_right - m_box_left) - m_width) / 2;
}
break;
default:
add_x = 0;
}
m_height = 0;
// find line box baseline and line-height
for(const auto& el : m_items)
{
if(el->get_display() == display_inline_text)
{
font_metrics fm;
el->get_font(&fm);
base_line = std::max(base_line, fm.base_line());
line_height = std::max(line_height, el->line_height());
m_height = std::max(m_height, fm.height);
}
el->m_pos.x += add_x;
}
if(m_height)
{
base_line += (line_height - m_height) / 2;
}
m_height = line_height;
int y1 = 0;
int y2 = m_height;
for (const auto& el : m_items)
{
if(el->get_display() == display_inline_text)
{
font_metrics fm;
el->get_font(&fm);
el->m_pos.y = m_height - base_line - fm.ascent;
} else
{
switch(el->get_vertical_align())
{
case va_super:
case va_sub:
case va_baseline:
el->m_pos.y = m_height - base_line - el->height() + el->get_base_line() + el->content_margins_top();
break;
case va_top:
el->m_pos.y = y1 + el->content_margins_top();
break;
case va_text_top:
el->m_pos.y = m_height - base_line - m_font_metrics.ascent + el->content_margins_top();
break;
case va_middle:
el->m_pos.y = m_height - base_line - m_font_metrics.x_height / 2 - el->height() / 2 + el->content_margins_top();
break;
case va_bottom:
el->m_pos.y = y2 - el->height() + el->content_margins_top();
break;
case va_text_bottom:
el->m_pos.y = m_height - base_line + m_font_metrics.descent - el->height() + el->content_margins_top();
break;
}
y1 = std::min(y1, el->top());
y2 = std::max(y2, el->bottom());
}
}
css_offsets offsets;
for (const auto& el : m_items)
{
el->m_pos.y -= y1;
el->m_pos.y += m_box_top;
if(el->get_display() != display_inline_text)
{
switch(el->get_vertical_align())
{
case va_top:
el->m_pos.y = m_box_top + el->content_margins_top();
break;
case va_bottom:
el->m_pos.y = m_box_top + (y2 - y1) - el->height() + el->content_margins_top();
break;
case va_baseline:
//TODO: process vertical align "baseline"
break;
case va_middle:
//TODO: process vertical align "middle"
break;
case va_sub:
//TODO: process vertical align "sub"
break;
case va_super:
//TODO: process vertical align "super"
break;
case va_text_bottom:
//TODO: process vertical align "text-bottom"
break;
case va_text_top:
//TODO: process vertical align "text-top"
break;
}
}
el->apply_relative_shift(m_box_right - m_box_left);
}
m_height = y2 - y1;
m_baseline = (base_line - y1) - (m_height - line_height);
}