修复色准结果图偏移

app/plots/plot_accuracy.py

@@ -335,10 +335,14 @@ def plot_accuracy(self: "PQAutomationApp", accuracy_data, test_type):
 
     fig.patch.set_facecolor(palette["bg"])
 
-    # 根据当前画布像素尺寸动态缩放字体，避免窗口缩小时文字挤压重叠。
+    # 先确保色准页签已激活，再读取真实画布尺寸进行动态缩放。
     font_scale = 1.0
     try:
+        self.chart_notebook.select(self.accuracy_chart_frame)
+        self.chart_notebook.update_idletasks()
         canvas_widget = self.accuracy_canvas.get_tk_widget()
+        canvas_widget.update_idletasks()
+        canvas_widget.update()
         cw = max(1, int(canvas_widget.winfo_width()))
         ch = max(1, int(canvas_widget.winfo_height()))
         font_scale = min(cw / 1000.0, ch / 600.0)
@@ -423,11 +427,13 @@ def plot_accuracy(self: "PQAutomationApp", accuracy_data, test_type):
     except Exception:
         pass
 
-    # Select the tab first so the canvas is visible and winfo_width/height
-    # return real pixel dimensions before the figure is rendered.
+    # 重新刷新布局并绘制，确保画布尺寸与 notebook tab 对齐。
     self.chart_notebook.select(self.accuracy_chart_frame)
-    self.accuracy_canvas.get_tk_widget().update_idletasks()
+    canvas_widget = self.accuracy_canvas.get_tk_widget()
+    canvas_widget.update_idletasks()
+    canvas_widget.update()
     self.accuracy_canvas.draw()
+    canvas_widget.update_idletasks()
 
 
 class PlotAccuracyMixin: