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demul: keep gaelco windowed at 4:3 on xorg #17180

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Merged
dmanlfc merged 1 commit into from
Oct 20, 2026
Merged

demul: keep gaelco windowed at 4:3 on xorg #17180

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15 changes: 6 additions & 9 deletions python-src/batocera-launch/batocera_launch/emulators/demul.py
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Original file line number Diff line number Diff line change
Expand Up @@ -84,15 +84,11 @@ def in_game_ratio(self) -> float:

@cached_property
def gpu_resolution(self) -> tuple[int, int]:
# Gaelco's plugin takes its window and render size from this, and draws the picture to fill it. Under Wayland
# that is a window, so give it the largest box with the chosen aspect that fits the screen. Xorg is fullscreen.
# Gaelco's plugin takes its window and render size from this, and draws the picture to fill it, so give it the
# largest box with the chosen aspect that fits the screen.
width, height = self.resolution.width, self.resolution.height

if (
self.system == 'gaelco'
and 'WAYLAND_DISPLAY' in os.environ
and (ratio := self.config.get_int('demulRatio', 1)) != 0
):
if self.system == 'gaelco' and (ratio := self.config.get_int('demulRatio', 1)) != 0:
target = 4 / 3 if ratio == 1 else 16 / 9

if width / height > target:
Expand Down Expand Up @@ -210,10 +206,11 @@ async def configure(self) -> Command:
)

# Handle window quirks with Demul systems: some systems start non-fullscreen
# and need a synthetic F3 (+ Alt+Enter under X11) to force fullscreen.
# and need a synthetic F3 (+ Alt+Enter under X11) to force fullscreen. Gaelco stays windowed, its plugin
# squeezes the picture in exclusive fullscreen.
if self.system in ('cave3rd', 'gaelco'):
trigger_cmd = 'sleep 5 && export DISPLAY=:0 && xdotool getactivewindow key F3'
if 'WAYLAND_DISPLAY' not in os.environ:
if self.system != 'gaelco' and 'WAYLAND_DISPLAY' not in os.environ:
trigger_cmd += ' && xdotool getactivewindow key alt+Return'
trigger_cmd += f' && {_CENTRE_WINDOW}'

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