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#include "feature_styler.hpp"
namespace
{
struct less_depth
{
bool operator() (di::DrawRule const & r1, di::DrawRule const & r2) const
{
return (r1.m_depth < r2.m_depth);
}
};
}
namespace feature
{
StylesContainer::StylesContainer() {}
StylesContainer::~StylesContainer()
{
//for_each(m_rules.begin(), m_rules.end(), DeleteFunctor());
}
void StylesContainer::GetStyles(FeatureType const & f, int const zoom)
{
// do special stuff
vector<drule::Key> keys;
string names; // for debug use only, in release it's empty
pair<int, bool> type = feature::GetDrawRule(f, zoom, keys, names);
m_hasLineStyles = false;
m_geometryType = type.first;
m_isCoastline = type.second;
f.GetPreferredDrawableNames(m_primaryText, m_secondaryText);
m_refText = f.GetRoadNumber();
double const population = static_cast<double>(f.GetPopulation());
if (population == 1)
m_popRank = 0.0;
else
{
double const upperBound = 3.0E6;
m_popRank = min(upperBound, population) / upperBound;
}
// low zoom heuristics
if (zoom <= 5)
{
// draw country names and capitals on native language only
if (!m_secondaryText.empty())
{
m_primaryText.swap(m_secondaryText);
m_secondaryText.clear();
}
// don't use population rank on low zoom
m_popRank = 0.0;
// hide superlong names on low zoom
if (m_primaryText.size() > 70)
m_primaryText.clear();
}
m_priorityModifier = 0;
if (population != 0){
// dividing by planet population to get m_priorityModifier < 1
m_priorityModifier = static_cast<double>(population) / 7E9;
}
drule::MakeUnique(keys);
size_t const count = keys.size();
int layer = f.GetLayer();
bool isTransparent = false;
if (layer == feature::LAYER_TRANSPARENT_TUNNEL)
{
layer = 0;
isTransparent = true;
}
m_rules.resize(count);
for (size_t i = 0; i < count; ++i)
{
double depth = keys[i].m_priority;
if (layer != 0)
depth = (layer * drule::layer_base_priority) + fmod(depth, drule::layer_base_priority);
depth += m_priorityModifier;
m_rules[i] = ( di::DrawRule( drule::rules().Find(keys[i]), depth, isTransparent) );
if (!m_hasLineStyles && (keys[i].m_type == drule::line))
m_hasLineStyles = true;
if (m_hasLineStyles && !m_hasPathText && !m_primaryText.empty())
if (m_rules[i].m_rule->GetCaption(0) != 0)
m_hasPathText = true;
}
sort(m_rules.begin(), m_rules.end(), less_depth());
m_count = m_rules.size();
}
}
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