Method ensure_color

crates/plotlars-plotly/src/subplot_grid/shared.rs:203–265

(&mut self, global_index: usize)

    }

    pub(super) fn ensure_color(&mut self, global_index: usize) {
        let trace_type = self.data.get("type").and_then(|v| v.as_str()).unwrap_or("");

        let default_color = DEFAULT_COLORWAY[global_index % DEFAULT_COLORWAY.len()];
        let color_str = format!(
            "rgb({},{},{})",
            default_color.0, default_color.1, default_color.2
        );

        match trace_type {
            "scatter" | "scattergl" | "scatter3d" | "scatterpolar" | "scattergeo"
            | "scattermapbox" => {
                let mode = self.data.get("mode").and_then(|v| v.as_str()).unwrap_or("");

                let has_marker_color = self
                    .data
                    .get("marker")
                    .and_then(|m| m.get("color"))
                    .is_some();

                let has_line_color = self.data.get("line").and_then(|l| l.get("color")).is_some();

                if mode.contains("markers") && !has_marker_color {
                    if self.data.get("marker").is_none() {
                        self.data["marker"] = Value::Object(Map::new());
                    }
                    if let Some(obj) = self.data.get_mut("marker").and_then(|m| m.as_object_mut()) {
                        obj.insert("color".to_string(), json!(color_str));
                    }
                } else if mode.contains("lines") && !has_line_color {
                    if self.data.get("line").is_none() {
                        self.data["line"] = Value::Object(Map::new());
                    }
                    if let Some(obj) = self.data.get_mut("line").and_then(|l| l.as_object_mut()) {
                        obj.insert("color".to_string(), json!(color_str));
                    }
                } else if !has_marker_color && !has_line_color {
                    if self.data.get("marker").is_none() {
                        self.data["marker"] = Value::Object(Map::new());
                    }
                    if let Some(obj) = self.data.get_mut("marker").and_then(|m| m.as_object_mut()) {
                        obj.insert("color".to_string(), json!(color_str));
                    }
                }
            }
            "bar" | "box" | "histogram" | "barpolar" => {
                let has_color = self
                    .data
                    .get("marker")
                    .and_then(|m| m.get("color"))
                    .is_some();
                if !has_color {
                    if self.data.get("marker").is_none() {
                        self.data["marker"] = Value::Object(Map::new());
                    }
                    if let Some(obj) = self.data.get_mut("marker").and_then(|m| m.as_object_mut()) {
                        obj.insert("color".to_string(), json!(color_str));
                    }