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uterm: add WAKEUP and SLEEP signals

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Notify all listeners when going to sleep or waking up. This allows saving
energy in the listeners by not redrawing the screen while being asleep.

Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
This commit is contained in:
David Herrmann 2012-06-24 01:01:47 +02:00
parent c8fbc14425
commit eec3f2ad85
2 changed files with 11 additions and 1 deletions
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2
src/uterm.h
View File

@ -146,6 +146,8 @@ enum uterm_video_type {
};
enum uterm_video_action {
UTERM_WAKE_UP,
UTERM_SLEEP,
UTERM_NEW,
UTERM_GONE,
};

10
src/uterm_video.c
View File

@ -488,17 +488,25 @@ void uterm_video_sleep(struct uterm_video *video)
if (!video || !video_is_awake(video))
return;
VIDEO_CB(video, NULL, UTERM_SLEEP);
VIDEO_CALL(video->ops->sleep, 0, video);
}
int uterm_video_wake_up(struct uterm_video *video)
{
int ret;
if (!video)
return -EINVAL;
if (video_is_awake(video))
return 0;
return VIDEO_CALL(video->ops->wake_up, 0, video);
ret = VIDEO_CALL(video->ops->wake_up, 0, video);
if (ret)
return ret;
VIDEO_CB(video, NULL, UTERM_WAKE_UP);
return 0;
}
bool uterm_video_is_awake(struct uterm_video *video)