show version in about dialog (#185)

Author: 3nids

oqtopus/gui/about_dialog.py

@@ -23,15 +23,46 @@
 # ---------------------------------------------------------------------
 
 
+import os
+
 from qgis.PyQt.QtCore import QSettings, Qt
-from qgis.PyQt.QtGui import QPixmap
-from qgis.PyQt.QtWidgets import QDialog
+from qgis.PyQt.QtGui import QFont, QPixmap
+from qgis.PyQt.QtWidgets import QDialog, QLabel
 
 from ..utils.plugin_utils import PluginUtils
 
 DIALOG_UI = PluginUtils.get_ui_class("about_dialog.ui")
 
 
+def _lib_version(package_name: str, package_path: str) -> str:
+    """Return the version of a bundled library.
+
+    Tries ``importlib.metadata`` first, then falls back to scanning for a
+    ``<package>-*.dist-info/METADATA`` file next to *package_path*.
+    """
+    try:
+        from importlib.metadata import version
+
+        return version(package_name)
+    except Exception:
+        pass
+
+    # Fallback: look for a dist-info directory next to the package
+    libs_dir = os.path.dirname(package_path)
+    prefix = f"{package_name}-"
+    for entry in os.listdir(libs_dir):
+        if entry.startswith(prefix) and entry.endswith(".dist-info"):
+            metadata_file = os.path.join(libs_dir, entry, "METADATA")
+            if os.path.isfile(metadata_file):
+                with open(metadata_file) as f:
+                    for line in f:
+                        if line.startswith("Version:"):
+                            return line.split(":", 1)[1].strip()
+            # Extract from directory name as last resort
+            return entry[len(prefix) : -len(".dist-info")]
+    return "?"
+
+
 class AboutDialog(QDialog, DIALOG_UI):
     def __init__(self, parent=None):
         QDialog.__init__(self, parent)
@@ -59,3 +90,32 @@ def __init__(self, parent=None):
             transformMode=Qt.TransformationMode.SmoothTransformation,
         )
         self.iconLabel.setPixmap(scaled_logo)
+
+        # --- Library versions ---
+        oqtopus_path = PluginUtils.plugin_root_path()
+        oqtopus_version = _lib_version("oqtopus", oqtopus_path)
+
+        from ..libs import pum as _pum_pkg
+
+        pum_path = os.path.dirname(_pum_pkg.__file__)
+        pum_version = _lib_version("pum", pum_path)
+
+        bold_font = QFont()
+        bold_font.setBold(True)
+
+        grid = self.gridLayout_2
+        next_row = grid.rowCount()
+
+        oqtopus_label = QLabel("oQtopus version:")
+        oqtopus_label.setFont(bold_font)
+        oqtopus_value = QLabel(oqtopus_version)
+        oqtopus_value.setToolTip(oqtopus_path)
+        grid.addWidget(oqtopus_label, next_row, 0)
+        grid.addWidget(oqtopus_value, next_row, 1)
+
+        pum_label = QLabel("PUM version:")
+        pum_label.setFont(bold_font)
+        pum_value = QLabel(pum_version)
+        pum_value.setToolTip(pum_path)
+        grid.addWidget(pum_label, next_row + 1, 0)
+        grid.addWidget(pum_value, next_row + 1, 1)