Show theme/DLC names and embedded theme previews in the library

app/gui.py

@@ -5,6 +5,7 @@ Run with::
     python3 -m app.main
 """
 import datetime
+import json
 import logging
 import sys
 import threading
@@ -20,7 +21,7 @@ from PySide6.QtWidgets import (
     QTabWidget, QTableWidget, QTableWidgetItem, QVBoxLayout, QWidget,
 )
 
-from . import config, covers, info, iso_reader, launcher, matcher, namer, pipeline, ps1, psp, queue, saves, scanner, sources, store, transfers
+from . import config, covers, info, iso_reader, launcher, matcher, namer, pipeline, ps1, psp, queue, saves, scanner, sources, store, theme, transfers
 from .db import get_connection, init_db
 
 log = logging.getLogger("gui")
@@ -376,6 +377,13 @@ class CoverShowcase(QWidget):
             item.setTextAlignment(Qt.AlignHCenter | Qt.AlignTop)
             item.setToolTip(it["name"])
             item.setData(Qt.UserRole, it)
+            # Themes/DLC show their locally-extracted preview (no scraping).
+            if not covers.is_scrapable(it.get("system")):
+                rid = it.get("release_id")
+                system = it.get("system")
+                path = covers.cover_path(rid, system)
+                if path is not None and path.exists() and covers.file_is_image(path):
+                    item.setIcon(self._fit_icon(QPixmap(str(path))))
             self.list.addItem(item)
 
         self._start_loader(gen)
@@ -3331,18 +3339,56 @@ def _nps_library_items(nps_dir, overrides, dates):
     theme_dir = root / "THEME"
     if theme_dir.is_dir():
         for ptf in sorted(theme_dir.rglob("*")):
-            if ptf.is_file() and ptf.suffix.lower() == ".ptf":
-                out.append(_nps_extra_item(ptf, "theme", ptf.stem))
+            if not ptf.is_file() or ptf.suffix.lower() != ".ptf":
+                continue
+            folder = ptf.parent
+            name = _sidecar_name(folder) or theme.ptf_name(ptf) or ptf.stem
+            item = _nps_extra_item(ptf, "theme", name)
+            item["release_id"] = covers.stable_key(name)
+            _write_theme_cover(ptf, item["release_id"])
+            out.append(item)
 
     # DLC: <nps>/DLC/<GAME_ID>/<name>.edat
     dlc_dir = root / "DLC"
     if dlc_dir.is_dir():
         for edat in sorted(dlc_dir.rglob("*")):
-            if edat.is_file() and edat.suffix.lower() == ".edat":
-                out.append(_nps_extra_item(edat, "dlc", edat.stem))
+            if not edat.is_file() or edat.suffix.lower() != ".edat":
+                continue
+            name = _sidecar_name(edat.parent) or edat.stem
+            out.append(_nps_extra_item(edat, "dlc", name))
     return out
 
 
+def _sidecar_name(folder):
+    """Read a display name saved next to a downloaded NPS item, if present."""
+    try:
+        meta = json.loads((Path(folder) / "meta.json").read_text(encoding="utf-8"))
+    except (OSError, ValueError):
+        return ""
+    return (meta.get("name") or "").strip()
+
+
+def _write_theme_cover(ptf_path, rid):
+    """Extract a theme's embedded preview into the cover cache (idempotent)."""
+    path = covers.cover_path(rid, "theme")
+    if path.exists() and covers.file_is_image(path):
+        return
+    try:
+        res = theme.theme_preview_rgba(ptf_path)
+    except Exception:  # noqa: BLE001
+        res = None
+    if not res:
+        return
+    w, h, rgba = res
+    img = QImage(rgba, w, h, w * 4, QImage.Format_RGBA8888)
+    if img.isNull():
+        return
+    try:
+        img.save(str(path), "PNG")
+    except OSError:
+        pass
+
+
 def _nps_extra_item(path, psp_kind, name):
     try:
         size = path.stat().st_size