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Fix memory leak and slowing down when video output is enabled #158

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merged 1 commit into from
Dec 16, 2023
Merged

Fix memory leak and slowing down when video output is enabled #158

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7 changes: 6 additions & 1 deletion modules/gui/emulator_screen.py
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,7 @@ def __init__(self, window: Tk):
self.frame: Union[ttk.Frame, None] = None
self.canvas: Union[Canvas, None] = None
self.current_canvas_image: Union[PhotoImage, None] = None
self._current_canvas_image_id: int | None = None
self._placeholder_image: Union[PhotoImage, None] = None
self.center_of_canvas: tuple[int, int] = (240, 160)

Expand Down Expand Up @@ -140,10 +141,14 @@ def _generate_placeholder_image(self):
self.canvas.create_image(self.center_of_canvas, image=self.current_canvas_image, state="normal")

def _update_image(self, image: PIL.Image):
if self._current_canvas_image_id:
self.canvas.delete(self._current_canvas_image_id)
self.current_canvas_image = PIL.ImageTk.PhotoImage(
image=image.resize((self.width * self.scale, self.height * self.scale), resample=False)
)
self.canvas.create_image(self.center_of_canvas, image=self.current_canvas_image, state="normal")
self._current_canvas_image_id = self.canvas.create_image(
self.center_of_canvas, image=self.current_canvas_image, state="normal"
)
self._update_window()

def _update_window(self):
Expand Down