ShapeResultSpacing::ShapeResultSpacing(const TextRun& run,
const FontDescription& fontDescription)
: m_textRun(run)
, m_letterSpacing(fontDescription.letterSpacing())
, m_wordSpacing(fontDescription.wordSpacing())
, m_expansion(run.expansion())
, m_expansionPerOpportunity(0)
, m_expansionOpportunityCount(0)
, m_textJustify(TextJustify::TextJustifyAuto)
, m_hasSpacing(false)
, m_normalizeSpace(run.normalizeSpace())
, m_allowTabs(run.allowTabs())
, m_isAfterExpansion(false)
, m_isVerticalOffset(fontDescription.isVerticalAnyUpright())
{
if (m_textRun.spacingDisabled())
return;
if (!m_letterSpacing && !m_wordSpacing && !m_expansion)
return;
m_hasSpacing = true;
if (!m_expansion)
return;
// Setup for justifications (expansions.)
m_textJustify = run.getTextJustify();
m_isAfterExpansion = !run.allowsLeadingExpansion();
bool isAfterExpansion = m_isAfterExpansion;
m_expansionOpportunityCount = Character::expansionOpportunityCount(run,
isAfterExpansion);
if (isAfterExpansion && !run.allowsTrailingExpansion()) {
ASSERT(m_expansionOpportunityCount > 0);
--m_expansionOpportunityCount;
}
if (m_expansionOpportunityCount)
m_expansionPerOpportunity = m_expansion / m_expansionOpportunityCount;
}
