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zoom: Check the value of level before using it.

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Check the value of level before dividing 1 by it.

Signed-off-by: Carlos Olmedo Escobar <carlos.olmedo.e@gmail.com>
Reviewed-by: Derek Foreman <derekf@osg.samsung.com>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
This commit is contained in:
Carlos Olmedo Escobar 2015-01-17 20:31:53 +01:00 • committed by Bryce Harrington
parent f44a9d8628
commit 50d4713e5b
1 changed files with 2 additions and 1 deletions
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src/zoom.c
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@ -120,12 +120,13 @@ weston_output_update_zoom_transform(struct weston_output *output)
float ratio, level; float ratio, level;
level = output->zoom.spring_z.current; level = output->zoom.spring_z.current;
ratio = 1 / level;
if (!output->zoom.active || level > output->zoom.max_level || if (!output->zoom.active || level > output->zoom.max_level ||
level == 0.0f) level == 0.0f)
return; return;
ratio = 1 / level;
if (wl_list_empty(&output->zoom.animation_xy.link)) if (wl_list_empty(&output->zoom.animation_xy.link))
zoom_area_center_from_pointer(output, &x, &y); zoom_area_center_from_pointer(output, &x, &y);