From cf47314500e4467cd6abec9d16419f72bc9d054e Mon Sep 17 00:00:00 2001
From: gaozheng <gaozheng.cn@gmail.com>
Date: Thu, 11 Jun 2026 16:09:00 +0800
Subject: [PATCH] =?UTF-8?q?fix(ui):=20=E6=95=A3=E7=82=B9=20=E6=BB=9A?=
 =?UTF-8?q?=E8=BD=AE=E7=BC=A9=E6=94=BE=E6=96=B9=E5=90=91=E5=8F=8D=E8=BD=AC?=
 =?UTF-8?q?(=E4=B8=8A=E6=BB=9A=3D=E6=94=BE=E5=A4=A7)+=E6=94=BE=E5=BC=80?=
 =?UTF-8?q?=E6=9C=80=E5=B0=8F=E5=AE=BD=E5=BA=A6(=E9=9A=8F=E9=9D=A2?=
 =?UTF-8?q?=E6=9D=BF=E6=94=B6=E7=BC=A9)=20+=20=E8=89=B2=E9=98=B6=E6=9D=A1?=
 =?UTF-8?q?=E5=B1=85=E4=B8=AD74%=E5=AE=BD(=E9=9D=9E=E6=BB=A1=E5=AE=BD,?=
 =?UTF-8?q?=E5=AF=B9=E9=BD=90=E5=8E=9F=E7=89=88)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/app/panels/chart/ColorBarWidget.cpp   | 10 ++++++++--
 src/app/panels/chart/RawDataChartView.cpp |  6 +++++-
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/app/panels/chart/ColorBarWidget.cpp b/src/app/panels/chart/ColorBarWidget.cpp
index 61e0306..4e34289 100644
--- a/src/app/panels/chart/ColorBarWidget.cpp
+++ b/src/app/panels/chart/ColorBarWidget.cpp
@@ -30,9 +30,15 @@ void ColorBarWidget::paintEvent(QPaintEvent* /*event*/) {
 
     const int barY = 2;
     const int barH = kBarHeight;
+    // 居中约 74% 宽（对齐原版：色阶条不占满，两侧各留 ~13% 边距）。
+    const int marginX = static_cast<int>(W * 0.13);
+    const int barLeft = marginX;
+    const int barRight = W - marginX;
+    const int barW = barRight - barLeft;
+    if (barW < 10) return;
     // 等宽色带：每相邻断点一格，等宽（对齐原版图例，非按值比例）。
     const int nSeg = static_cast<int>(stops.size()) - 1;
-    auto segX = [&](int i) { return static_cast<int>(static_cast<double>(i) / nSeg * (W - 1)); };
+    auto segX = [&](int i) { return barLeft + static_cast<int>(static_cast<double>(i) / nSeg * barW); };
 
     for (int i = 0; i < nSeg; ++i) {
         int xL = segX(i), xR = segX(i + 1);
@@ -42,7 +48,7 @@ void ColorBarWidget::paintEvent(QPaintEvent* /*event*/) {
     }
     // 外边框
     p.setPen(QPen(QColor(120, 120, 120), 1));
-    p.drawRect(0, barY, W - 1, barH - 1);
+    p.drawRect(barLeft, barY, barW - 1, barH - 1);
 
     // 边界值标签（深色文字，白底可见），在各分格边界下方。
     QFont font = p.font();
diff --git a/src/app/panels/chart/RawDataChartView.cpp b/src/app/panels/chart/RawDataChartView.cpp
index 9ca2b59..901ee92 100644
--- a/src/app/panels/chart/RawDataChartView.cpp
+++ b/src/app/panels/chart/RawDataChartView.cpp
@@ -87,8 +87,12 @@ RawDataChartView::RawDataChartView(QWidget* parent) : QWidget(parent) {
     auto* panner = new QwtPlotPanner(plot_->canvas());
     panner->setMouseButton(Qt::LeftButton);
 
-    new QwtPlotMagnifier(plot_->canvas());
+    auto* magnifier = new QwtPlotMagnifier(plot_->canvas());
+    // 反转滚轮方向：Qwt 默认 wheelFactor=0.9 → 上滚缩小；取倒数使「上滚=放大」（常规习惯）。
+    magnifier->setWheelFactor(1.0 / 0.9);
 
+    // 允许随停靠面板自由收缩（不强制最小宽度→不出横向滚动条，对齐原版响应式填充）。
+    plot_->setMinimumSize(0, 0);
     lay->addWidget(plot_, 1);
 
     // ---- 独立色阶条（固定高 36px，QwtPlot 的兄弟 widget）----