makepad-plot

Matplotlib-style plotting library for Makepad 2.0 (Splash) — 32 chart widgets, all declarable and scriptable from the Splash DSL.

Widgets

LinePlot StepPlot AreaChart StemPlot LinePlotDual Stackplot Streamgraph BarPlot HistogramChart WaterfallChart CandlestickChart ScatterPlot BubbleChart HexbinChart PieChart DonutChart GaugeChart FunnelChart PolarPlot RadarChart BoxPlotChart ViolinPlot HeatmapChart (alias Heatmap) ContourPlot QuiverPlot Surface3D Scatter3D Line3D Treemap SankeyDiagram SubplotGrid/SubplotRow

Every chart renders built-in demo data out of the box, so a bare LinePlot{} in a Splash script shows something immediately. Cartesian charts support pan/zoom (interactive: true); 3D charts support drag-rotate and scroll-zoom.

Usage

// app main.rs
pub use makepad_plot;
pub use makepad_plot::makepad_widgets;
use makepad_widgets::*;

app_main!(App);

script_mod! {
    use mod.prelude.widgets.*
    use mod.plot.*

    startup() do #(App::script_component(vm)){
        ui: Root{
            main_window := Window{
                body +: {
                    line := LinePlot{ title: "hello" interactive: true legend: LegendPosition.TopRight }
                }
            }
        }
    }
}

#[derive(Script, ScriptHook)]
pub struct App {
    #[live] ui: WidgetRef,
}

impl MatchEvent for App {}

impl AppMain for App {
    fn script_mod(vm: &mut ScriptVm) -> ScriptValue {
        makepad_widgets::script_mod(vm);
        makepad_plot::script_mod(vm);   // registers mod.plot
        self::script_mod(vm)
    }
    fn handle_event(&mut self, cx: &mut Cx, event: &Event) {
        self.match_event(cx, event);
        self.ui.handle_event(cx, event, &mut Scope::empty());
    }
}

Feed data at runtime from Splash (e.g. in an on_click):

ui.line.set_title("LinePlot (scripted)")
ui.line.add_series("script", [0 1 2 3 4 5], [0 2 1 3 2.5 4])
ui.bar.set_data(["Q1" "Q2" "Q3" "Q4"], [12 19 8 15])
ui.gauge.set_value(42)
ui.heatmap.set_colormap("Plasma")

Each widget's Splash methods (set_data, add_series, set_title, set_xlim, …) are implemented via Widget::script_call — see the chart modules under src/charts/.

Demo

cargo run    # opens the full widget gallery (examples/plot_demo.rs)

Design & porting notes

See SPLASH_PORT.md for the architecture and the Makepad 2.0 engine findings discovered during the port (draw-order/depth rules for text over vector geometry, wrap-flow limitations, Splash array parsing, etc.).