import Toybox.Graphics;
import Toybox.Lang;

// Resolution-independent layout helpers. All sizes are computed as
// fractions of the drawable context so the app adapts to any round
// Garmin display.
module LayoutMetrics {

    // --- Base helpers ---------------------------------------------------
    function centerX(dc as Dc) as Number { return dc.getWidth() / 2; }
    function centerY(dc as Dc) as Number { return dc.getHeight() / 2; }

    function minDim(dc as Dc) as Number {
        return (dc.getWidth() < dc.getHeight()) ? dc.getWidth() : dc.getHeight();
    }

    // --- Menu ring geometry --------------------------------------------
    function iconSize(dc as Dc) as Number {
        return (minDim(dc) * 0.16).toNumber();
    }

    function selectedIconSize(dc as Dc) as Number {
        return (iconSize(dc) * 1.25).toNumber();
    }

    // Radius chosen so the accent ring around the selected icon sits
    // ~5px from the display edge on any device.
    function ringRadius(dc as Dc) as Number {
        var half = minDim(dc) / 2;
        var selHalf = selectedIconSize(dc) / 2;
        var edgeMargin = (minDim(dc) * 0.02).toNumber() + 5;
        return (half - selHalf - edgeMargin).toNumber();
    }

    function accentPenWidth(dc as Dc) as Number {
        var w = (minDim(dc) * 0.01).toNumber();
        return (w < 2) ? 2 : w;
    }

    // --- History view sections -----------------------------------------
    function topSectionHeight(dc as Dc) as Number {
        return (dc.getHeight() * 0.15).toNumber();
    }

    function midSectionHeight(dc as Dc) as Number {
        return (dc.getHeight() * 0.70).toNumber();
    }

    function bottomSectionY(dc as Dc) as Number {
        return (dc.getHeight() * 0.85).toNumber();
    }

    // --- Loading / delete arc radius ------------------------------------
    function edgeArcRadius(dc as Dc) as Number {
        return ((minDim(dc) / 2) - 4).toNumber();
    }

    function edgeArcPenWidth(dc as Dc) as Number {
        var w = (minDim(dc) * 0.025).toNumber();
        return (w < 3) ? 3 : w;
    }
}