Update app.py

app.py

@@ -50,7 +50,7 @@ def create_radar_chart(df, selected_rows, selected_columns):
                 dash=line_styles[i % len(line_styles)],
                 width=2
             ),
-            marker=dict(opacity=0.5)  # 增加透明度
+            marker=dict(opacity=0.5)
         ))
 
     fig.update_layout(
@@ -58,15 +58,15 @@ def create_radar_chart(df, selected_rows, selected_columns):
             radialaxis=dict(
                 visible=True,
                 range=[0, df[selected_columns].values.max() * 1.1],
-                tickfont=dict(size=12, color='black')  # 調整刻度文字顏色為黑色
+                tickfont=dict(size=12, color='black', family="Microsoft JhengHei, Noto Sans CJK, Arial")  # 調整刻度文字顏色為黑色並設定字體
             ),
             angularaxis=dict(
-                tickfont=dict(size=16, color='black')  # 放大字體，顏色為黑色
+                tickfont=dict(size=16, color='black', family="Microsoft JhengHei, Noto Sans CJK, Arial")  # 放大字體，顏色為黑色並設定字體
             )
         ),
         showlegend=True,
         legend=dict(
-            font=dict(size=14, color='black')  # 圖例文字加大並改為黑色
+            font=dict(size=14, color='black', family="Microsoft JhengHei, Noto Sans CJK, Arial")  # 圖例文字加大並改為黑色並設定字體
         ),
         title='學生成績雷達圖',
         plot_bgcolor='white',  # 背景為白色
@@ -85,10 +85,10 @@ def save_all_radar_charts(df, selected_columns, comparison_rows):
     for student in df['姓名']:
         if student in comparison_rows:
             continue
-
+        
         fig = create_radar_chart(df, [student] + comparison_rows, selected_columns)
 
-        # 在這裡更新字型
+        # 在這裡更新字型，確保字型有被設定
         fig.update_layout(
             font=dict(
                 family="Microsoft JhengHei, Noto Sans CJK, Arial"
@@ -96,7 +96,8 @@ def save_all_radar_charts(df, selected_columns, comparison_rows):
         )
 
         file_path = os.path.join(output_dir, f"{student}_comparison.png")
-        fig.write_image(file_path, engine="kaleido")
+        fig.write_image(file_path, engine="kaleido",  
+                      font_family="Microsoft JhengHei, Noto Sans CJK, Arial")  # 在这里加入字型设定
 
     # 壓縮所有圖表
     zip_path = "radar_charts.zip"
@@ -140,13 +141,22 @@ def main():
                 else:
                     zip_path = save_all_radar_charts(df, selected_columns, comparison_rows)
                     with open(zip_path, "rb") as f:
-                        st.download_button(
-                            label="下載壓縮檔",
-                            data=f,
-                            file_name="radar_charts.zip",
-                            mime="application/zip",
-                            key="download_button"  # 加上 key，讓按鈕重新渲染
+                         st.download_button(
+                             label="下載壓縮檔",
+                             data=f,
+                             file_name="radar_charts.zip",
+                             mime="application/zip",
+                             key="download_button",
+                             on_click=lambda: st.session_state.update({'download_triggered':True}),  # 设置下载触发标记
+                             disabled=st.session_state.get("download_triggered",False) # 如果已下载则禁用下载按钮
                         )
+                    
+                    st.session_state.download_triggered = False
+                    
+                    
 
 if __name__ == "__main__":
+    if 'download_triggered' not in st.session_state:
+        st.session_state.download_triggered = False
+
     main()