Add VariableColorButton

Used for color selection which also support variables

lib/variables/variable-color.cpp

@@ -0,0 +1,53 @@
+#include "variable-color.hpp"
+
+#include <obs.hpp>
+
+namespace advss {
+
+ColorVariable::ColorVariable(const QColor &value) : _value(value) {}
+
+void ColorVariable::Save(obs_data_t *obj, const char *name) const
+{
+	OBSDataAutoRelease data = obs_data_create();
+	obs_data_set_int(data, "version", 1);
+	obs_data_set_int(data, "type", static_cast<int>(_type));
+	auto var = _variable.lock();
+	if (var) {
+		obs_data_set_string(data, "variable", var->Name().c_str());
+	}
+	obs_data_set_int(data, "red", _value.red());
+	obs_data_set_int(data, "green", _value.green());
+	obs_data_set_int(data, "blue", _value.blue());
+	obs_data_set_obj(obj, name, data);
+}
+
+void ColorVariable::Load(obs_data_t *obj, const char *name)
+{
+	OBSDataAutoRelease data = obs_data_get_obj(obj, name);
+	_value.setRed(obs_data_get_int(data, "red"));
+	_value.setGreen(obs_data_get_int(data, "green"));
+	_value.setBlue(obs_data_get_int(data, "blue"));
+	if (!obs_data_has_user_value(data, "version")) {
+		// Old format: no variable support, just R/G/B
+		_type = Type::FIXED_VALUE;
+		return;
+	}
+	auto variableName = obs_data_get_string(data, "variable");
+	_variable = GetWeakVariableByName(variableName);
+	_type = static_cast<Type>(obs_data_get_int(data, "type"));
+}
+
+QColor ColorVariable::GetValue() const
+{
+	if (_type == Type::FIXED_VALUE) {
+		return _value;
+	}
+	auto var = _variable.lock();
+	if (!var) {
+		return Qt::black;
+	}
+	const QColor color(QString::fromStdString(var->Value()));
+	return color.isValid() ? color : Qt::black;
+}
+
+} // namespace advss