qml: qeapp: add methods to retrive system bar heights

electrum/gui/qml/qeapp.py

@@ -22,6 +22,7 @@ from electrum.base_crash_reporter import BaseCrashReporter, EarlyExceptionsQueue
 from electrum.network import Network
 from electrum.plugin import run_hook
 from electrum.gui.common_qt.util import get_font_id
+from electrum.util import profiler
 
 from .qeconfig import QEConfig
 from .qedaemon import QEDaemon
@@ -60,6 +61,7 @@ if 'ANDROID_DATA' in os.environ:
     jString = autoclass('java.lang.String')
     jIntent = autoclass('android.content.Intent')
     jview = jpythonActivity.getWindow().getDecorView()
+    systemSdkVersion = autoclass('android.os.Build$VERSION').SDK_INT
 
 notification = None
 
@@ -414,6 +416,54 @@ class QEAppController(BaseCrashReporter, QObject):
             self._secureWindow = secure
             self.secureWindowChanged.emit()
 
+    @pyqtSlot(result=bool)
+    def enforcesEdgeToEdge(self) -> bool:
+        if not self.isAndroid():
+            return False
+        return bool(systemSdkVersion >= 35)
+
+    @profiler(min_threshold=0.05)
+    def _getSystemBarHeight(self, bar_type: str) -> int:
+        if not self.enforcesEdgeToEdge():
+            return 0
+        assert systemSdkVersion >= 30, \
+            f"Android WindowInsets unavailable on {systemSdkVersion=}"
+        try:
+            root_insets = jview.getRootWindowInsets()
+            window_insets_type = autoclass('android.view.WindowInsets$Type')
+
+            if bar_type == 'status':
+                ins = root_insets.getInsets(window_insets_type.statusBars())
+            elif bar_type == 'navigation':
+                ins = root_insets.getInsets(window_insets_type.navigationBars())
+            else:
+                raise ValueError(f"Invalid bar_type: {bar_type}")
+
+            # Get the display metrics to convert pixels to dp
+            display_metrics = jpythonActivity.getResources().getDisplayMetrics()
+            density = display_metrics.density
+
+            height = int(max(ins.bottom, ins.right, ins.left, ins.top, 0))
+            if not height > 0:
+                return 0
+
+            # Convert from pixels to dp for QML
+            height_dp = int(height / density)
+
+            self.logger.debug(f"_getSystemBarHeight: {height=}, {height_dp=}, {bar_type=}")
+            return max(0, height_dp)
+        except Exception as e:
+            self.logger.debug(f"{bar_type} fallback due to: {e!r}")
+            return 0
+
+    @pyqtSlot(result=int)
+    def getStatusBarHeight(self) -> int:
+        return self._getSystemBarHeight('status')
+
+    @pyqtSlot(result=int)
+    def getNavigationBarHeight(self) -> int:
+        return self._getSystemBarHeight('navigation')
+
 
 class ElectrumQmlApplication(QGuiApplication):