Function create_mask_png

tests/EffectMask.cpp:50–59

}

static std::string create_mask_png(const std::vector<int>& gray_values) {
	const std::string path = temp_png_path("mask");
	QImage mask(static_cast<int>(gray_values.size()), 1, QImage::Format_RGBA8888_Premultiplied);
	for (size_t i = 0; i < gray_values.size(); ++i) {
		const int gray = gray_values[i];
		mask.setPixelColor(static_cast<int>(i), 0, QColor(gray, gray, gray, 255));
	}
	REQUIRE(mask.save(QString::fromStdString(path)));
	return path;
}

static std::string create_uniform_mask_png(int width, int height, int gray_value) {
	const std::string path = temp_png_path("mask_uniform");