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// Author: cirakg & claude ai
// Summary: Scrollable text screen showing the spike's measurements.
//
// Lines come from SpikeReport. The first visible line moves with
// SpikeDelegate (UP/DOWN buttons or swipes); text stays in the middle band of
// round screens so nothing is cut off at the top or bottom.
import Toybox.Graphics;
import Toybox.Lang;
import Toybox.WatchUi;
class SpikeView extends WatchUi.View {
// Share of the screen height left free at the top and at the bottom.
private const MARGIN_FRACTION = 0.14;
private var _report as SpikeReport;
private var _firstLine as Number = 0;
function initialize(report as SpikeReport) {
View.initialize();
_report = report;
}
// Move the first visible line by delta lines, staying within the text.
function scroll(delta as Number) as Void {
var last = _report.lines.size() - 1;
_firstLine += delta;
if (_firstLine > last) {
_firstLine = last;
}
if (_firstLine < 0) {
_firstLine = 0;
}
WatchUi.requestUpdate();
}
function onUpdate(dc as Graphics.Dc) as Void {
dc.setColor(Graphics.COLOR_WHITE, Graphics.COLOR_BLACK);
dc.clear();
var font = Graphics.FONT_XTINY;
var lineHeight = dc.getFontHeight(font);
var top = (dc.getHeight() * MARGIN_FRACTION).toNumber();
var bottom = dc.getHeight() - top;
var x = dc.getWidth() / 2;
var y = top;
var lines = _report.lines;
for (var i = _firstLine; i < lines.size() && y + lineHeight <= bottom; i++) {
dc.drawText(x, y, font, lines[i], Graphics.TEXT_JUSTIFY_CENTER);
y += lineHeight;
}
}
}
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