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优化DataZoom的Marquee框选功能

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monitor1394
2026-05-28 09:14:53 +08:00
parent b040f27b2c
commit 2688d93f17
5 changed files with 121 additions and 34 deletions
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35
Runtime/Component/Axis/AxisContext.cs
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@@ -103,22 +103,35 @@ namespace XCharts.Runtime
internal void UpdateFilterData(List<string> data, DataZoom dataZoom)
{
int start = 0, end = 0;
var range = Mathf.RoundToInt(data.Count * (dataZoom.end - dataZoom.start) / 100);
if (range <= 0)
range = 1;
if (dataZoom.context.invert)
// Use (N-1) intervals to match shadow drawing (scaleWid = width/(N-1)).
// CeilToInt for start, FloorToInt for end, so filter aligns exactly with filler.
int n = data.Count - 1;
int startIndex, endIndex;
if (n > 0)
{
end = Mathf.RoundToInt(data.Count * dataZoom.end / 100);
start = end - range;
if (start < 0) start = 0;
if (dataZoom.context.invert)
{
startIndex = Mathf.CeilToInt((float)n * (100 - dataZoom.end) / 100);
endIndex = Mathf.FloorToInt((float)n * (100 - dataZoom.start) / 100);
}
else
{
startIndex = Mathf.CeilToInt((float)n * dataZoom.start / 100);
endIndex = Mathf.FloorToInt((float)n * dataZoom.end / 100);
}
}
else
{
start = Mathf.RoundToInt(data.Count * dataZoom.start / 100);
end = start + range;
if (end > data.Count) end = data.Count;
startIndex = 0;
endIndex = 0;
}
var range = endIndex - startIndex + 1;
if (range <= 0)
range = 1;
start = startIndex;
if (start < 0) start = 0;
end = start + range;
if (end > data.Count) end = data.Count;
var minZoomRatio = (int)(data.Count * dataZoom.minZoomRatio);
if (start != filterStart ||