SVG-Compression Profile balanced ist wesentlich konservativer, Datei-Eigenschaften der neuen PPTX enthält Hinweis auf PPTX Image Compressor in den Kommentaren

pptx_image_compress.py

@@ -2,7 +2,11 @@
 # -*- coding: utf-8 -*-
 """
 PPTX Raster & Vector Komprimier-Tool (Raster-Iamges: via CaesiumCLT, Vector-Images: via python Module svg_polish)
-Version: 1.1.8
+Version: 1.1.9
+
+Änderungen in 1.1.9
+- SVG Files Default Profile: `balanced` statt `aggressive`
+- Datei-Eigenschaften der neu generierten PPTX enthält Hinweis auf Compression `compressed by PPTX Image Compressor` 
 
 Änderungen in 1.1.8:
 - SVG Files werden bei Vorhandensein von svg_polish anhand von 2 Profilen optimiert: balanced|agressive
@@ -38,7 +42,7 @@ from typing import Callable, List, Optional
 
 
 
-__version__ = "1.1.8"
+__version__ = "1.1.9"
 
 RASTER_EXT = {".jpg", ".jpeg", ".png", ".webp", ".gif"}
 VECTOR_EXT = {".svg"}
@@ -50,7 +54,7 @@ PNG_TO_JPEG_THRESHOLD_BYTES = 500 * 1024
 SVG_POLISH_MODULE_NAME = "svg_polish"
 SVG_PROFILE_BALANCED = "balanced"
 SVG_PROFILE_AGGRESSIVE = "aggressive"
-SVG_PROFILE_DEFAULT = SVG_PROFILE_AGGRESSIVE
+SVG_PROFILE_DEFAULT = SVG_PROFILE_BALANCED
     
 
 @dataclass
@@ -252,17 +256,8 @@ def build_svg_polish_options(svg_polish_module: object, profile: str = SVG_PROFI
     try:
         if profile == SVG_PROFILE_BALANCED:
             return options_type(
-                digits=3,
-                style_to_xml=True,
-                group_collapse=True,
-                simple_colors=True,
-                indent_type="none",
-                newlines=False,
-                strip_xml_prolog=True,
-                strip_comments=True,
-                remove_metadata=True,
-                remove_titles=True,
-                remove_descriptions=True,
+                shorten_ids=True,
+                enable_viewboxing=True,
             )
         return options_type(
             digits=2,
@@ -648,6 +643,8 @@ def process_single_deck(
                     except Exception:
                         pass
 
+        update_core_description(work_dir, "PPTX Image Compressor",__version__)
+
         zip_dir_to_pptx(work_dir, output_pptx)
         size_after = output_pptx.stat().st_size
         result.size_after = size_after
@@ -845,6 +842,46 @@ def extractParserArguments():
 
 
 
+def update_core_description(base_dir, app_name, version):
+    core_xml_path = Path(base_dir) / "docProps" / "core.xml"
+
+    if not core_xml_path.exists():
+        raise FileNotFoundError(f"{core_xml_path} nicht gefunden")
+
+    # Namespaces definieren
+    ns = {
+        "cp": "http://schemas.openxmlformats.org/package/2006/metadata/core-properties",
+        "dc": "http://purl.org/dc/elements/1.1/",
+        "dcterms": "http://purl.org/dc/terms/",
+        "xsi": "http://www.w3.org/2001/XMLSchema-instance"
+    }
+
+    # Registrieren, damit Prefixe erhalten bleiben
+    for prefix, uri in ns.items():
+        ET.register_namespace(prefix, uri)
+
+    tree = ET.parse(core_xml_path)
+    root = tree.getroot()
+
+    description_text = f"compressed by {app_name} {version}"
+
+    # Suche vorhandenes Element
+    desc_elem = root.find("dc:description", ns)
+
+    if desc_elem is None:
+        # neu anlegen
+        desc_elem = ET.SubElement(
+            root,
+            f"{{{ns['dc']}}}description"
+        )
+
+    # Text setzen/überschreiben
+    desc_elem.text = description_text
+
+    # Datei speichern
+    tree.write(core_xml_path, encoding="utf-8", xml_declaration=True)
+
+
 
 if __name__ == '__main__':
     main()