Simple VU Meter (Requested by Arnie)

// ==PREPROCESSOR==
// @name "Simple VU meter (25.03.2013)"
// @author "eXtremeHunter"
// ==/PREPROCESSOR==
// Tested with foo_vis_vumeter v. 2013-02-16

function RGB(r, g, b) {
    return (0xff000000 | (r << 16) | (g << 8) | (b));
}
VUMeter = new ActiveXObject("VUMeter");
VUMeter.RegisterWindow(window.ID);

// ==================================================== //

var meterBackColor = RGB(230, 230, 230);
var levelColor = RGB(75, 149, 229);
var peakColor = RGB(180, 180, 80);

function on_paint(gr) {

    var centerGap = 40,
        x = 15,
        y = 10,
        w = ww / 2,
        h = 8,
        c = centerGap / 2,
        leftLevel = (VUMeter.LeftLevel * ((w - c - x) / 2.5)),
        rightLevel = (VUMeter.RightLevel * ((w - c - x) / 2.5)),
        leftPeak = (VUMeter.LeftPeak * ((w - c - x) / 2.5)),
        rightPeak = (VUMeter.RightPeak * ((w - c - x) / 2.5));

    // Draw Level

    gr.FillSolidRect(x, y, w - c - x, h, meterBackColor); // L
    gr.FillSolidRect(x, y, leftLevel, h, levelColor);

    gr.FillSolidRect(w + c, y, w - c - x, h, meterBackColor); // R
    gr.FillSolidRect(ww - rightLevel - x, y, rightLevel, h, levelColor);

    // Offset Indicator
    gr.SetTextRenderingHint(5);
    gr.Drawstring(VUMeter.Offset, gdi.font("Segoe Ui", 12, 0), RGB(0, 0, 0), 0, y, ww, 14, 0x11005000);

    var y = y + h + 3;
    var h = 3;

    // Draw Peak

    gr.FillSolidRect(x, y, w - c - x, h, meterBackColor); // L
    gr.FillSolidRect(x, y, leftPeak, h, peakColor);

    gr.FillSolidRect(w + c, y, w - c - x, h, meterBackColor); // R
    gr.FillSolidRect(ww - rightPeak - x, y, rightPeak, h, peakColor);

}
// ==================================================== //

function on_size() {
    ww = window.Width;
    wh = window.Height;
}
// ==================================================== //

function on_mouse_wheel(step) {
    VUMeter.Offset = VUMeter.Offset + step;
}