Method loadPalette

framework/data.cpp:661–738

}

sp<Palette> DataImpl::loadPalette(const UString &path)
{
	std::lock_guard<std::recursive_mutex> l(this->paletteCacheLock);
	if (path == "")
	{
		LogWarning("Invalid palette path");
		return nullptr;
	}

	auto alias = this->paletteAliases.find(path);
	if (alias != this->paletteAliases.end())
	{
		LogInfo("Using alias \"%s\" for \"%s\"", path, alias->second);
		return this->loadPalette(alias->second);
	}

	// Use an uppercase version of the path for the cache key
	UString cacheKey = to_upper(path);

	auto pal = this->paletteCache[cacheKey].lock();
	if (pal)
	{
		return pal;
	}

	pal = loadPCXPalette(*this, path);
	if (pal)
	{
		LogInfo("Read \"%s\" as PCX palette", path);
		this->paletteCache[cacheKey] = pal;
		this->pinnedPalettes.push(pal);
		this->pinnedPalettes.pop();
		return pal;
	}
	pal = loadPNGPalette(*this, path);
	if (pal)
	{
		LogInfo("Read \"%s\" as PNG palette", path);
		this->paletteCache[cacheKey] = pal;
		this->pinnedPalettes.push(pal);
		this->pinnedPalettes.pop();
		return pal;
	}

	sp<RGBImage> img = std::dynamic_pointer_cast<RGBImage>(this->loadImage(path));
	if (img)
	{
		unsigned int idx = 0;
		auto p = mksp<Palette>(img->size.x * img->size.y);
		RGBImageLock src{img, ImageLockUse::Read};
		for (unsigned int y = 0; y < img->size.y; y++)
		{
			for (unsigned int x = 0; x < img->size.x; x++)
			{
				Colour c = src.get(Vec2<int>{x, y});
				p->setColour(idx, c);
				idx++;
			}