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IconCache.cpp

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#include "IconCache.h"

QIcon IconCache::null_icon;

std::unordered_map<std::string, QIcon> IconCache::icons;

const QIcon& IconCache::get(const std::string& name)

{

// Check if we already have an icon object with that name in the cache. If so, just return that

auto it = icons.find(name);

if(it != icons.end())

return it->second;

// If now, try to load an icon with that name and insert it into the cache

QIcon icon(":/icons/" + QString::fromStdString(name));

auto ins = icons.insert({name, icon});

// If the insertion was successful, return the inserted icon object. If it was not, return a null icon.

if(ins.second)

return ins.first->second;

else

return null_icon;

}