进一步优化save_result（提取函数)

app/export/image_exporter.py

@@ -0,0 +1,38 @@
+"""测试结果图表 PNG 导出。"""
+import os
+
+
+# (item_key, fig_attr, filename, allowed_test_types_or_None, default_bbox_inches_auto)
+IMAGE_SPECS = [
+    ("gamut", "gamut_fig", "色域测试结果.png", None, True),
+    ("gamma", "gamma_fig", "Gamma曲线测试结果.png",
+     {"screen_module", "sdr_movie"}, True),
+    ("eotf", "eotf_fig", "EOTF曲线测试结果.png", {"hdr_movie"}, True),
+    ("cct", "cct_fig", "色度一致性测试结果.png", None, True),
+    ("contrast", "contrast_fig", "对比度测试结果.png", None, False),
+    ("accuracy", "accuracy_fig", "色准测试结果.png",
+     {"sdr_movie", "hdr_movie"}, True),
+]
+
+
+def save_result_images(result_dir, current_test_type, selected_items,
+                       figure_provider, log):
+    """根据测试类型和已选项将各测试图表保存为 PNG。
+
+    figure_provider: callable(attr_name) -> matplotlib Figure 或 None
+    log: callable(msg)
+    """
+    for item_key, fig_attr, filename, allowed_types, default_bbox in IMAGE_SPECS:
+        if item_key not in selected_items:
+            continue
+        if allowed_types is not None and current_test_type not in allowed_types:
+            continue
+        fig = figure_provider(fig_attr)
+        if fig is None:
+            continue
+        path = os.path.join(result_dir, filename)
+        if default_bbox:
+            fig.savefig(path, dpi=300)
+        else:
+            fig.savefig(path, dpi=300, bbox_inches="tight")
+        log(f"✓ 已保存: {filename}")