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Improve looped animation behaviour

This commit is contained in:
Přemysl Eric Janouch 2023-06-24 02:22:44 +02:00
parent bb4d3acd12
commit 2ff853b7e0
Signed by: p
GPG Key ID: A0420B94F92B9493
1 changed files with 17 additions and 6 deletions
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21
fiv-view.c
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@ -797,7 +797,6 @@ stop_animating(FivView *self)
self->frame_time = 0;
self->frame_update_connection = 0;
self->remaining_loops = 0;
g_object_notify_by_pspec(G_OBJECT(self), view_properties[PROP_PLAYING]);
}
@ -866,7 +865,15 @@ start_animating(FivView *self)
self->frame_time = gdk_frame_clock_get_frame_time(clock);
self->frame_update_connection = g_signal_connect(
clock, "update", G_CALLBACK(on_frame_clock_update), self);
// Only restart looping the animation if it has stopped at the end.
if (!self->remaining_loops) {
self->remaining_loops = self->page->loops;
if (self->remaining_loops && !self->frame->frame_next) {
self->frame = self->page;
gtk_widget_queue_draw(GTK_WIDGET(self));
}
}
gdk_frame_clock_begin_updating(clock);
g_object_notify_by_pspec(G_OBJECT(self), view_properties[PROP_PLAYING]);
@ -884,6 +891,7 @@ switch_page(FivView *self, FivIoImage *page)
FivIoOrientationUnknown)
self->orientation = FivIoOrientation0;
self->remaining_loops = 0;
start_animating(self);
gtk_widget_queue_resize(GTK_WIDGET(self));
@ -1418,11 +1426,14 @@ static void
frame_step(FivView *self, int step)
{
stop_animating(self);
FivIoImage *frame = step < 0
? self->frame->frame_previous
: self->frame->frame_next;
if (!step || !(self->frame = frame))
if (step > 0) {
// Decrease the loop counter as if running on a timer.
(void) advance_frame(self);
} else if (!step || !(self->frame = self->frame->frame_previous)) {
self->frame = self->page;
self->remaining_loops = 0;
}
gtk_widget_queue_draw(GTK_WIDGET(self));
}