static void
start_animation (ply_boot_splash_plugin_t *plugin)
{
ply_list_node_t *node;
if (plugin->is_animating)
return;
node = ply_list_get_first_node (plugin->views);
while (node != NULL) {
ply_list_node_t *next_node;
view_t *view;
view = ply_list_node_get_data (node);
next_node = ply_list_get_next_node (plugin->views, node);
view_start_animation (view);
node = next_node;
}
plugin->is_animating = true;
plugin->start_time = ply_get_timestamp ();
animate_at_time (plugin, plugin->start_time);
if (plugin->mode == PLY_BOOT_SPLASH_MODE_SHUTDOWN)
return;
ply_event_loop_watch_for_timeout (plugin->loop,
1.0 / FRAMES_PER_SECOND,
(ply_event_loop_timeout_handler_t)
on_timeout, plugin);
}
static void
on_timeout (ply_throbber_t *throbber)
{
double sleep_time;
bool should_continue;
throbber->now = ply_get_timestamp ();
should_continue = animate_at_time (throbber,
throbber->now - throbber->start_time);
sleep_time = 1.0 / FRAMES_PER_SECOND;
sleep_time = MAX (sleep_time - (ply_get_timestamp () - throbber->now),
0.005);
if (!should_continue) {
throbber->is_stopped = true;
if (throbber->stop_trigger != NULL) {
ply_trigger_pull (throbber->stop_trigger, NULL);
throbber->stop_trigger = NULL;
}
} else {
ply_event_loop_watch_for_timeout (throbber->loop,
sleep_time,
(ply_event_loop_timeout_handler_t)
on_timeout, throbber);
}
}
static void
on_timeout (ply_boot_splash_plugin_t *plugin)
{
double sleep_time;
plugin->now = ply_get_timestamp ();
/* The choice below is between
*
* 1) keeping a constant animation speed, and dropping
* frames when necessary
* 2) showing every frame, but slowing down the animation
* when a frame would be otherwise dropped.
*
* It turns out there are parts of boot up where the animation
* can get sort of choppy. By default we choose 2, since the
* nature of this animation means it looks natural even when it
* is slowed down
*/
#ifdef REAL_TIME_ANIMATION
animate_at_time (plugin,
plugin->now - plugin->start_time);
#else
static double time = 0.0;
time += 1.0 / FRAMES_PER_SECOND;
animate_at_time (plugin, time);
#endif
sleep_time = 1.0 / FRAMES_PER_SECOND;
sleep_time = MAX (sleep_time - (ply_get_timestamp () - plugin->now),
0.005);
ply_event_loop_watch_for_timeout (plugin->loop,
sleep_time,
(ply_event_loop_timeout_handler_t)
on_timeout, plugin);
}
static void
on_timeout (ply_animation_t *animation)
{
double sleep_time;
bool should_continue;
animation->previous_time = animation->now;
animation->now = ply_get_timestamp ();
#ifdef REAL_TIME_ANIMATION
should_continue = animate_at_time (animation,
animation->now - animation->start_time);
#else
static double time = 0.0;
time += 1.0 / FRAMES_PER_SECOND;
should_continue = animate_at_time (animation, time);
#endif
sleep_time = 1.0 / FRAMES_PER_SECOND;
sleep_time = MAX (sleep_time - (ply_get_timestamp () - animation->now),
0.005);
if (!should_continue)
{
if (animation->stop_trigger != NULL)
{
ply_trigger_pull (animation->stop_trigger, NULL);
animation->stop_trigger = NULL;
}
}
else
{
ply_event_loop_watch_for_timeout (animation->loop,
sleep_time,
(ply_event_loop_timeout_handler_t)
on_timeout, animation);
}
}