Add focus indication to editor and viewer header

novelwriter/gui/doceditor.py

@@ -55,6 +55,7 @@ from novelwriter.common import minmax, transferCase
 from novelwriter.constants import nwConst, nwKeyWords, nwShortcode, nwUnicode
 from novelwriter.core.document import NWDocument
 from novelwriter.enum import nwComment, nwDocAction, nwDocInsert, nwDocMode, nwItemClass, nwTrinary
+from novelwriter.extensions.configlayout import NColourLabel
 from novelwriter.extensions.eventfilters import WheelEventFilter
 from novelwriter.extensions.modified import NIconToggleButton, NIconToolButton
 from novelwriter.gui.dochighlight import BLOCK_META, BLOCK_TITLE
@@ -210,6 +211,7 @@ class GuiDocEditor(QPlainTextEdit):
         # Function Mapping
         self.closeSearch = self.docSearch.closeSearch
         self.searchVisible = self.docSearch.isVisible
+        self.changeFocusState = self.docHeader.changeFocusState
 
         # Finalise
         self.updateSyntaxColours()
@@ -2785,8 +2787,7 @@ class GuiDocEditHeader(QWidget):
         self.setAutoFillBackground(True)
 
         # Title Label
-        self.itemTitle = QLabel("", self)
-        self.itemTitle.setIndent(0)
+        self.itemTitle = NColourLabel("", self, faded=SHARED.theme.fadedText)
         self.itemTitle.setMargin(0)
         self.itemTitle.setContentsMargins(0, 0, 0, 0)
         self.itemTitle.setAutoFillBackground(True)
@@ -2924,6 +2925,11 @@ class GuiDocEditHeader(QWidget):
 
         return
 
+    def changeFocusState(self, state: bool) -> None:
+        """Toggle focus state."""
+        self.itemTitle.setColorState(state)
+        return
+
     def setHandle(self, tHandle: str) -> None:
         """Set the document title from the handle, or alternatively, set
         the whole document path within the project.

novelwriter/gui/docviewer.py

@@ -33,7 +33,7 @@ from enum import Enum
 from PyQt5.QtCore import QPoint, Qt, QUrl, pyqtSignal, pyqtSlot
 from PyQt5.QtGui import QCursor, QMouseEvent, QPalette, QResizeEvent, QTextCursor
 from PyQt5.QtWidgets import (
-    QAction, QApplication, QFrame, QHBoxLayout, QLabel, QMenu, QTextBrowser,
+    QAction, QApplication, QFrame, QHBoxLayout, QMenu, QTextBrowser,
     QToolButton, QWidget
 )
 
@@ -42,6 +42,7 @@ from novelwriter.constants import nwHeaders, nwUnicode
 from novelwriter.core.toqdoc import TextDocumentTheme, ToQTextDocument
 from novelwriter.enum import nwDocAction, nwDocMode, nwItemType
 from novelwriter.error import logException
+from novelwriter.extensions.configlayout import NColourLabel
 from novelwriter.extensions.eventfilters import WheelEventFilter
 from novelwriter.extensions.modified import NIconToolButton
 from novelwriter.gui.theme import STYLES_MIN_TOOLBUTTON
@@ -92,6 +93,9 @@ class GuiDocViewer(QTextBrowser):
         self.setContextMenuPolicy(Qt.ContextMenuPolicy.CustomContextMenu)
         self.customContextMenuRequested.connect(self._openContextMenu)
 
+        # Function Mapping
+        self.changeFocusState = self.docHeader.changeFocusState
+
         self.initViewer()
 
         logger.debug("Ready: GuiDocViewer")
@@ -597,9 +601,7 @@ class GuiDocViewHeader(QWidget):
         self.setAutoFillBackground(True)
 
         # Title Label
-        self.itemTitle = QLabel(self)
-        self.itemTitle.setText("")
-        self.itemTitle.setIndent(0)
+        self.itemTitle = NColourLabel("", self, faded=SHARED.theme.fadedText)
         self.itemTitle.setMargin(0)
         self.itemTitle.setContentsMargins(0, 0, 0, 0)
         self.itemTitle.setAutoFillBackground(True)
@@ -738,6 +740,11 @@ class GuiDocViewHeader(QWidget):
         self.itemTitle.setPalette(palette)
         return
 
+    def changeFocusState(self, state: bool) -> None:
+        """Toggle focus state."""
+        self.itemTitle.setColorState(state)
+        return
+
     def setHandle(self, tHandle: str) -> None:
         """Sets the document title from the handle, or alternatively,
         set the whole document path.

novelwriter/guimain.py

@@ -326,6 +326,11 @@ class GuiMain(QMainWindow):
 
     def postLaunchTasks(self, cmdOpen: str | None) -> None:
         """Process tasks after the main window has been created."""
+        QApplication.processEvents()
+        app = QApplication.instance()
+        if isinstance(app, QApplication):
+            app.focusChanged.connect(self._appFocusChanged)
+
         # Check that config loaded fine
         if CONFIG.hasError:
             SHARED.error(CONFIG.errorText())
@@ -948,6 +953,24 @@ class GuiMain(QMainWindow):
     #  Private Slots
     ##
 
+    @pyqtSlot("QWidget*", "QWidget*")
+    def _appFocusChanged(self, old: QWidget, new: QWidget) -> None:
+        """Alert main widgets that they have received or lost focus."""
+        if isinstance(new, QWidget):
+            docEditor = False
+            docViewer = False
+            if self.docEditor.isAncestorOf(new):
+                docEditor = True
+            elif self.docViewer.isAncestorOf(new):
+                docViewer = True
+
+            self.docEditor.changeFocusState(docEditor)
+            self.docViewer.changeFocusState(docViewer)
+
+            logger.debug("Main focus switched to: %s", type(new).__name__)
+
+        return
+
     @pyqtSlot(bool)
     def _focusModeChanged(self, focusMode: bool) -> None:
         """Handle change of focus mode. The Main GUI Focus Mode hides

tests/test_base/test_base_init.py

@@ -62,15 +62,17 @@ def testBaseInit_Launch(caplog, monkeypatch, fncPath):
     CONFIG.osWindows = osWindows
 
     # Normal Launch
-    monkeypatch.setattr("PyQt5.QtWidgets.QApplication.__init__", lambda *a: None)
-    monkeypatch.setattr("PyQt5.QtWidgets.QApplication.setApplicationName", lambda *a: None)
-    monkeypatch.setattr("PyQt5.QtWidgets.QApplication.setApplicationVersion", lambda *a: None)
-    monkeypatch.setattr("PyQt5.QtWidgets.QApplication.setWindowIcon", lambda *a: None)
-    monkeypatch.setattr("PyQt5.QtWidgets.QApplication.setOrganizationDomain", lambda *a: None)
-    monkeypatch.setattr("PyQt5.QtWidgets.QApplication.exec", lambda *a: 0)
-    with pytest.raises(SystemExit) as ex:
-        main([f"--config={fncPath}", f"--data={fncPath}"])
-        assert ex.value.code == 0
+    with monkeypatch.context() as mp:
+        mp.setattr("PyQt5.QtWidgets.QApplication.__init__", lambda *a: None)
+        mp.setattr("PyQt5.QtWidgets.QApplication.setApplicationName", lambda *a: None)
+        mp.setattr("PyQt5.QtWidgets.QApplication.setApplicationVersion", lambda *a: None)
+        mp.setattr("PyQt5.QtWidgets.QApplication.setWindowIcon", lambda *a: None)
+        mp.setattr("PyQt5.QtWidgets.QApplication.setOrganizationDomain", lambda *a: None)
+        mp.setattr("PyQt5.QtWidgets.QApplication.exec", lambda *a: 0)
+        # mp.setattr("PyQt5.QtWidgets.QApplication.focusChange.connect", lambda *a: None)
+        with pytest.raises(SystemExit) as ex:
+            main([f"--config={fncPath}", f"--data={fncPath}"])
+            assert ex.value.code == 0
 
 
 @pytest.mark.base