🐛 fix: 🐛 fix(viewer): re-enable DRM/WebGL for Spotify + remove resize lock

- re-enable PluginsEnabled → Widevine/DRM playback works again
- remove WebGLEnabled from disabled list → sites using WebGL render OK
- remove _ResizeGrip subclass + _lock_size/_unlock_size mechanism
- keep JS injection neutralizing window.resizeTo/resizeBy (proper fix)
- use standard QSizeGrip → user can freely resize window

Author: talesam

biglinux-webapps/usr/bin/big-webapps-viewer

@@ -3,7 +3,7 @@
 CSD headerbar replicating GTK4/Adwaita style. Fullscreen auto-hide overlay.
 """
 
-APP_VERSION = "3.4.0"
+APP_VERSION = "3.4.1"
 
 import argparse
 import json
@@ -351,18 +351,6 @@ class NavOverlay(QWidget):
         return btn
 
 
-class _ResizeGrip(QSizeGrip):
-    """SizeGrip that unlocks window resize during user drag."""
-
-    def mousePressEvent(self, e):
-        self.parentWidget()._unlock_size()
-        super().mousePressEvent(e)
-
-    def mouseReleaseEvent(self, e):
-        super().mouseReleaseEvent(e)
-        self.parentWidget()._lock_size()
-
-
 class WebAppWindow(QMainWindow):
     """CSD window + Chromium WebEngine. Adwaita-style headerbar."""
 
@@ -373,35 +361,16 @@ class WebAppWindow(QMainWindow):
         self.setWindowFlags(Qt.FramelessWindowHint | Qt.Window)
         self.setAttribute(Qt.WidgetAttribute.WA_TranslucentBackground, True)
 
-        # resize lock: only user-initiated resize (grip drag) is allowed
-        self._resize_locked = False
-
         self._setup_profile(app_id)
         self._setup_ui(url, title, icon)
         self._setup_shortcuts()
         self._load_geometry()
 
-        # lock window size hard via min/max constraints
-        self._lock_size()
-
         # fullscreen hover detection
         self._hover_timer = QTimer(self)
         self._hover_timer.timeout.connect(self._check_hover)
         self._hover_timer.start(150)
 
-    def _lock_size(self) -> None:
-        """Lock current size by setting min=max=current."""
-        self._resize_locked = True
-        s = self.size()
-        self.setMinimumSize(s)
-        self.setMaximumSize(s)
-
-    def _unlock_size(self) -> None:
-        """Unlock resize constraints."""
-        self._resize_locked = False
-        self.setMinimumSize(0, 0)
-        self.setMaximumSize(16777215, 16777215)
-
     def _setup_profile(self, app_id: str) -> None:
         storage = str(DATA_BASE / app_id)
         Path(storage).mkdir(parents=True, exist_ok=True)
@@ -440,6 +409,7 @@ class WebAppWindow(QMainWindow):
             QWebEngineSettings.WebAttribute.JavascriptEnabled,
             QWebEngineSettings.WebAttribute.LocalStorageEnabled,
             QWebEngineSettings.WebAttribute.ScrollAnimatorEnabled,
+            QWebEngineSettings.WebAttribute.PluginsEnabled,
             QWebEngineSettings.WebAttribute.JavascriptCanAccessClipboard,
         ):
             s.setAttribute(attr, True)
@@ -451,7 +421,6 @@ class WebAppWindow(QMainWindow):
         )
         # disable non-essential features → reduce RAM
         for off_attr in (
-            QWebEngineSettings.WebAttribute.WebGLEnabled,
             QWebEngineSettings.WebAttribute.AutoLoadIconsForPage,
             QWebEngineSettings.WebAttribute.TouchIconsEnabled,
         ):
@@ -505,7 +474,7 @@ class WebAppWindow(QMainWindow):
         self.webview.page().newWindowRequested.connect(self._on_new_window)
 
         # resize grip — bottom-right
-        self._grip = _ResizeGrip(self)
+        self._grip = QSizeGrip(self)
         self._grip.setFixedSize(16, 16)
 
     def _setup_shortcuts(self) -> None:
@@ -538,7 +507,6 @@ class WebAppWindow(QMainWindow):
             self.nav.raise_()
 
     def _toggle_fullscreen(self) -> None:
-        self._unlock_size()
         if self.isFullScreen():
             self._exit_fullscreen()
         else:
@@ -550,15 +518,12 @@ class WebAppWindow(QMainWindow):
     def _exit_fullscreen(self) -> None:
         if not self.isFullScreen():
             return
-        self._unlock_size()
         self.header.setVisible(True)
         self._grip.setVisible(True)
         self.showNormal()
         self._apply_mask()
-        self._lock_size()
 
     def _toggle_maximize(self) -> None:
-        self._unlock_size()
         fg = _get_theme_colors()["fg"]
         if self.isMaximized():
             self.showNormal()
@@ -567,9 +532,6 @@ class WebAppWindow(QMainWindow):
             self.showMaximized()
             self.header.max_btn.setIcon(_make_adw_icon("restore", size=20, fg_hex=fg))
         self._apply_mask()
-        # re-lock at new size (but not when maximized — WM controls it)
-        if not self.isMaximized():
-            self._lock_size()
 
     def _on_title(self, title: str) -> None:
         if title:
@@ -627,9 +589,7 @@ class WebAppWindow(QMainWindow):
             h = d.get("height", 720)
             self.resize(w, h)
             if d.get("maximized"):
-                self._resize_locked = False
                 self.showMaximized()
-                self._resize_locked = True
             elif sg:
                 x = sg.x() + (sg.width() - w) // 2
                 y = sg.y() + (sg.height() - h) // 2