From fafa34b882b859fea4f995a35f921ddcd06f1c48 Mon Sep 17 00:00:00 2001
From: gitlawr <lawrleegle@gmail.com>
Date: Mon, 24 Aug 2026 19:37:04 +0800
Subject: [PATCH 1/2] feat(charts): let LineChart pin the y-axis ceiling
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Percentage charts read wrong when the axis scales to the data — 59%
usage fills the frame like 100% would. An optional yAxisMax pins the
ceiling; unset keeps the adaptive axis.
---
 src/lib/components/echarts/line-chart.tsx | 3 +++
 src/lib/components/echarts/types.ts       | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/src/lib/components/echarts/line-chart.tsx b/src/lib/components/echarts/line-chart.tsx
index 7fa3f0e..e7f4125 100644
--- a/src/lib/components/echarts/line-chart.tsx
+++ b/src/lib/components/echarts/line-chart.tsx
@@ -13,6 +13,7 @@ const LineChart: React.FC<ChartProps> = (props) => {
     seriesData,
     xAxisData,
     yAxisName,
+    yAxisMax,
     height,
     width,
     labelFormatter,
@@ -132,6 +133,7 @@ const LineChart: React.FC<ChartProps> = (props) => {
       yAxis: {
         ...options.yAxis,
         name: yAxisName,
+        max: yAxisMax ?? undefined,
         nameTextStyle: {
           fontSize: 12,
           align: 'right'
@@ -147,6 +149,7 @@ const LineChart: React.FC<ChartProps> = (props) => {
     seriesData,
     xAxisData,
     yAxisName,
+    yAxisMax,
     title,
     smooth,
     titleOptions,
diff --git a/src/lib/components/echarts/types.ts b/src/lib/components/echarts/types.ts
index d393930..c130625 100644
--- a/src/lib/components/echarts/types.ts
+++ b/src/lib/components/echarts/types.ts
@@ -29,6 +29,9 @@ export interface ChartProps {
   smooth?: boolean;
   color?: string;
   yAxisName?: string;
+  // pins the y-axis ceiling (e.g. 100 for percentage charts); left
+  // unset, echarts scales the axis to the data
+  yAxisMax?: number;
   stack?: string | false;
   gaugeConfig?: {
     radius?: string;

From 58c8762781049dc7c1d0cdb070741b8ec7bd6772 Mon Sep 17 00:00:00 2001
From: gitlawr <lawrleegle@gmail.com>
Date: Wed, 26 Aug 2026 18:17:40 +0800
Subject: [PATCH 2/2] feat(line-chart): honor a series-provided showSymbol

A series with gaps can carry isolated points no line segment reaches;
callers mark them with per-item symbols and flip showSymbol on the
series, which the shared line config used to override.
---
 src/lib/components/echarts/line-chart.tsx | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/lib/components/echarts/line-chart.tsx b/src/lib/components/echarts/line-chart.tsx
index e7f4125..631a8d0 100644
--- a/src/lib/components/echarts/line-chart.tsx
+++ b/src/lib/components/echarts/line-chart.tsx
@@ -97,6 +97,9 @@ const LineChart: React.FC<ChartProps> = (props) => {
       return {
         ...item,
         ...lineItemConfig,
+        // a series whose data marks isolated points (per-item symbol)
+        // opts back into symbol rendering
+        showSymbol: item.showSymbol ?? lineItemConfig.showSymbol,
         smooth: smooth,
         itemStyle: {
           ...lineItemConfig.itemStyle,