Method render

src/tools/ColorMapsManager.cpp:95–127

}

void ColorMapsManager::render(QPixmap& pixmap, const QString& name) {
	if (name.isEmpty())
		return;

	if (!m_colors.contains(name)) {
		for (const auto& name : collectionNames())
			colorMapNames(name);
	}

	// convert from the string RGB represetation to QColor
	m_colormap.clear();
	for (auto& rgb : m_colors[name]) {
		QStringList rgbValues = rgb.split(QLatin1Char(','));
		if (rgbValues.count() == 3)
			m_colormap << QColor(rgbValues.at(0).toInt(), rgbValues.at(1).toInt(), rgbValues.at(2).toInt());
		else if (rgbValues.count() == 4)
			m_colormap << QColor(rgbValues.at(1).toInt(), rgbValues.at(2).toInt(), rgbValues.at(3).toInt());
	}

	// render the preview pixmap
	int height = 80;
	int width = 200;
	int count = m_colormap.count();
	pixmap = QPixmap(width, height);
	QPainter p(&pixmap);
	int i = 0;
	for (auto& color : m_colormap) {
		p.setPen(color);
		p.setBrush(color);
		p.drawRect(i * width / count, 0, width / count, height);
		++i;
	}
}

/**
 * @brief Processes the json metadata file that contains the list of colormap collections.