improve UI zoom UX

🛠️ piker/ui/_axes.py -> Enhance axis font and size handling
🛠️ piker/ui/_window.py -> Improve zoom key detection and event handling
🛠️ piker/ui/_window.py -> Update axes fonts and layout after zoom events

.gitignore

@@ -103,3 +103,4 @@ ENV/
 # mypy
 .mypy_cache/
 .vscode/settings.json
+**/.DS_Store

piker/ui/_search.py

@@ -179,6 +179,7 @@ class CompleterView(QTreeView):
         self.set_font_size(_font.px_size)
         self.setIndentation(_font.px_size)
         self.setFont(_font.font)
+        # tell Qt our size hint changed so it recalculates layout
         self.updateGeometry()
 
     def resize_to_results(
@@ -658,6 +659,7 @@ class SearchWidget(QtWidgets.QWidget):
         if hasattr(self.view, 'update_fonts'):
             self.view.update_fonts()
 
+        # tell Qt our size hint changed so it recalculates layout
         self.updateGeometry()
 
     def focus(self) -> None:

piker/ui/_style.py

@@ -191,11 +191,17 @@ class DpiAwareFont:
         # apply zoom level multiplier
         font_size = int(font_size * zoom_level)
 
-        log.debug(
-            f"screen:{screen.name()}\n"
-            f"pDPI: {pdpi}, lDPI: {ldpi}, scale: {scale}\n"
-            f"zoom_level: {zoom_level}\n"
-            f"\nOur best guess font size is {font_size}\n"
+        ftype: str = f'{type(self)!r}'
+        log.info(
+            f'screen: {screen.name()}\n'
+            f'pDPI: {pdpi!r}\n'
+            f'lDPI: {ldpi!r}\n'
+            f'scale: {scale!r}\n'
+            f'{ftype}._font_inches={self._font_inches!r}\n'
+            f'zoom_level: {zoom_level!r}\n'
+            f'\n'
+            f"Our best guess for an auto-font-size is,\n"
+            f'font_size: {font_size!r}\n'
         )
         # apply the size
         self._set_qfont_px_size(font_size)