idle events disable

rich/tui/app.py

@@ -108,6 +108,7 @@ if __name__ == "__main__":
     from logging import FileHandler
 
     from .widgets.header import Header
+    from .widgets.placeholder import Placeholder
 
     logging.basicConfig(
         level="NOTSET",
@@ -124,6 +125,7 @@ if __name__ == "__main__":
 
         async def on_startup(self, event: events.Startup) -> None:
             await self.view.mount(Header(self.title), slot="header")
+            await self.view.mount(Placeholder(), slot="body")
             self.refresh()
 
     MyApp.run()

rich/tui/message_pump.py

@@ -126,16 +126,19 @@ class MessagePump:
         self, message: Message, priority: int = 0
     ) -> Optional[bool]:
         if isinstance(message, events.Event):
-            method_name = f"on_{message.name}"
-            dispatch_function: MessageHandler = getattr(self, method_name, None)
-            if dispatch_function is not None:
-                await dispatch_function(message)
-            if message.bubble and self._parent:
-                await self._parent.post_message(message, priority)
+            await self.on_event(message, priority)
         else:
             return await self.on_message(message)
         return False
 
+    async def on_event(self, event: events.Event, priority: int) -> None:
+        method_name = f"on_{event.name}"
+        dispatch_function: MessageHandler = getattr(self, method_name, None)
+        if dispatch_function is not None:
+            await dispatch_function(event)
+        if event.bubble and self._parent:
+            await self._parent.post_message(event, priority)
+
     async def on_message(self, message: Message) -> None:
         pass
 

rich/tui/view.py

@@ -127,5 +127,5 @@ class LayoutView(View):
                 finally:
                     self.mouse_over = widget
             await widget.post_message(
-                events.MouseMove(self, event.x - region.x, event.y - region.x)
+                events.MouseMove(self, event.x - region.x, event.y - region.y)
             )

rich/tui/widget.py

@@ -1,11 +1,13 @@
+from logging import getLogger
+from typing import ClassVar, NamedTuple, Optional, TYPE_CHECKING
+
+
 from rich.align import Align
 from rich.console import Console, ConsoleOptions, RenderResult, RenderableType
 from rich.pretty import Pretty
 from rich.panel import Panel
 from rich.repr import rich_repr, RichReprResult
 
-from typing import ClassVar, NamedTuple, Optional, TYPE_CHECKING
-
 from . import events
 from ._context import active_app
 from .message_pump import MessagePump
@@ -13,22 +15,14 @@ from .message_pump import MessagePump
 if TYPE_CHECKING:
     from .app import App
 
+log = getLogger("rich")
+
 
 class WidgetDimensions(NamedTuple):
     width: int
     height: int
 
 
-class WidgetPlaceholder:
-    def __init__(self, widget: "Widget") -> None:
-        self.widget = widget
-
-    def __rich__(self) -> Panel:
-        return Panel(
-            Align.center(Pretty(self.widget), vertical="middle"), title="Widget"
-        )
-
-
 @rich_repr
 class Widget(MessagePump):
     _count: ClassVar[int] = 0
@@ -41,6 +35,7 @@ class Widget(MessagePump):
         Widget._count += 1
         self.size = WidgetDimensions(0, 0)
         self.size_changed = False
+        self.mouse_over = False
         super().__init__()
         if not self.mouse_events:
             self.disable_messages(events.MouseMove)
@@ -64,7 +59,11 @@ class Widget(MessagePump):
     def render(
         self, console: Console, options: ConsoleOptions, new_size: WidgetDimensions
     ) -> RenderableType:
-        return WidgetPlaceholder(self)
+        return Panel(
+            Align.center(Pretty(self), vertical="middle"),
+            title=self.__class__.__name__,
+            border_style="green" if self.mouse_over else "blue",
+        )
 
     def __rich_console__(
         self, console: Console, options: ConsoleOptions
@@ -73,3 +72,10 @@ class Widget(MessagePump):
         renderable = self.render(console, options, new_size)
         self.size = new_size
         yield renderable
+
+    async def on_event(self, event: events.Event, priority: int) -> None:
+        if isinstance(event, (events.MouseEnter, events.MouseLeave)):
+            self.mouse_over = isinstance(event, events.MouseEnter)
+            log.debug("%r", self.mouse_over)
+            await self.refresh()
+        await super().on_event(event, priority)