From 9021aa2909189becd9809d29ebf8c9a3c362ce5f Mon Sep 17 00:00:00 2001 From: Neil Roberts Date: Thu, 11 Jun 2009 10:55:52 +0100 Subject: [PATCH] Revert "[timeline] Don't clamp the elapsed time when a looping tl reaches the end" This reverts commit 9c5663d6717722d6d77162060f284355b5081174. The patch was causing problems for applications that expect the elapsed_time to be at either end of the timeline when the completed signal is fired. For example test-behave swaps the direction of the timeline in the completed handler but if the time has overflowed the end then the timeline would only take a short time to get back the beginning. This caused the animation to just vibrate around the beginning. --- clutter/clutter-timeline.c | 142 +++++++++++------------------- tests/conform/test-timeline-interpolate.c | 8 +- 2 files changed, 54 insertions(+), 96 deletions(-) diff --git a/clutter/clutter-timeline.c b/clutter/clutter-timeline.c index d10e9ec..2d68bc5 100644 --- a/clutter/clutter-timeline.c +++ b/clutter/clutter-timeline.c @@ -430,76 +430,22 @@ clutter_timeline_init (ClutterTimeline *self) priv->elapsed_time = 0; } -static gboolean -have_passed_time (ClutterTimeline *timeline, - gint new_time, - gint msecs) -{ - ClutterTimelinePrivate *priv = timeline->priv; - - /* Ignore markers that are outside the duration of the timeline */ - if (msecs < 0 || msecs > priv->duration) - return FALSE; - - if (priv->direction == CLUTTER_TIMELINE_FORWARD) - { - /* We need to special case when a marker is added at the - beginning of the timeline */ - if (msecs == 0 && - priv->msecs_delta > 0 && - new_time - priv->msecs_delta <= 0) - return TRUE; - - /* If the timeline is looping then we need to check for wrap - around */ - if (priv->loop && new_time >= priv->duration) - return (msecs > new_time - priv->msecs_delta || - msecs <= new_time % priv->duration); - - /* Otherwise it's just a simple test if the time is in range of - the previous time and the new time */ - return (msecs > new_time - priv->msecs_delta - && msecs <= new_time); - } - else - { - /* We need to special case when a marker is added at the - end of the timeline */ - if (msecs == priv->duration && - priv->msecs_delta > 0 && - new_time + priv->msecs_delta >= priv->duration) - return TRUE; - - /* If the timeline is looping then we need to check for wrap - around */ - if (priv->loop && new_time <= 0) - return (msecs < new_time + priv->msecs_delta || - msecs >= (priv->duration - - (-new_time % priv->duration))); - - /* Otherwise it's just a simple test if the time is in range of - the previous time and the new time */ - return (msecs >= new_time - && msecs < new_time + priv->msecs_delta); - } -} - -struct CheckIfMarkerHitClosure -{ - ClutterTimeline *timeline; - gint new_time; -}; - static void check_if_marker_hit (const gchar *name, TimelineMarker *marker, - struct CheckIfMarkerHitClosure *data) + ClutterTimeline *timeline) { - if (have_passed_time (data->timeline, data->new_time, marker->msecs)) + ClutterTimelinePrivate *priv = timeline->priv; + + if (priv->direction == CLUTTER_TIMELINE_FORWARD + ? (marker->msecs > priv->elapsed_time - priv->msecs_delta + && marker->msecs <= priv->elapsed_time) + : (marker->msecs >= priv->elapsed_time + && marker->msecs < priv->elapsed_time + priv->msecs_delta)) { CLUTTER_NOTE (SCHEDULER, "Marker '%s' reached", name); - g_signal_emit (data->timeline, timeline_signals[MARKER_REACHED], + g_signal_emit (timeline, timeline_signals[MARKER_REACHED], marker->quark, name, marker->msecs); @@ -507,12 +453,10 @@ check_if_marker_hit (const gchar *name, } static void -emit_frame_signal (ClutterTimeline *timeline, gint new_time) +emit_frame_signal (ClutterTimeline *timeline) { ClutterTimelinePrivate *priv = timeline->priv; - struct CheckIfMarkerHitClosure data; - /* Emit the signal */ g_signal_emit (timeline, timeline_signals[NEW_FRAME], 0, priv->elapsed_time); @@ -520,12 +464,9 @@ emit_frame_signal (ClutterTimeline *timeline, gint new_time) if (priv->markers_by_name == NULL) return; - data.timeline = timeline; - data.new_time = new_time; - g_hash_table_foreach (priv->markers_by_name, (GHFunc) check_if_marker_hit, - &data); + timeline); } static gboolean @@ -586,7 +527,7 @@ clutter_timeline_do_frame (ClutterTimeline *timeline) if (!is_complete (timeline)) { /* Emit the signal */ - emit_frame_signal (timeline, priv->elapsed_time); + emit_frame_signal (timeline); /* Signal pauses timeline ? */ if (!priv->is_playing) @@ -601,31 +542,29 @@ clutter_timeline_do_frame (ClutterTimeline *timeline) else { /* Handle loop or stop */ + ClutterTimelineDirection saved_direction = priv->direction; + guint overflow_msecs = priv->elapsed_time; gint end_msecs; - gint overflow_msecs = priv->elapsed_time; /* Update the current elapsed time in case the signal handlers - * want to take a peek */ - if (priv->loop) - { - /* We try and interpolate smoothly around a loop */ - if (priv->direction == CLUTTER_TIMELINE_FORWARD) - priv->elapsed_time = priv->elapsed_time % priv->duration; - else - priv->elapsed_time = (priv->duration - - (-priv->elapsed_time % priv->duration)); - } - else if (priv->direction == CLUTTER_TIMELINE_FORWARD) - priv->elapsed_time = priv->duration; + * want to take a peek. If we clamp elapsed time, then we need + * to correpondingly reduce msecs_delta to reflect the correct + * range of times */ + if (priv->direction == CLUTTER_TIMELINE_FORWARD) + { + priv->msecs_delta -= (priv->elapsed_time - priv->duration); + priv->elapsed_time = priv->duration; + } else if (priv->direction == CLUTTER_TIMELINE_BACKWARD) - priv->elapsed_time = 0; + { + priv->msecs_delta -= - priv->elapsed_time; + priv->elapsed_time = 0; + } end_msecs = priv->elapsed_time; - /* Check if the markers have been hit using the old value of - elapsed time so it will use the right value for the previous - elapsed time */ - emit_frame_signal (timeline, overflow_msecs); + /* Emit the signal */ + emit_frame_signal (timeline); /* Did the signal handler modify the elapsed time? */ if (priv->elapsed_time != end_msecs) @@ -670,11 +609,28 @@ clutter_timeline_do_frame (ClutterTimeline *timeline) return TRUE; } - if (!priv->loop) - clutter_timeline_rewind (timeline); + if (priv->loop) + { + /* We try and interpolate smoothly around a loop */ + if (saved_direction == CLUTTER_TIMELINE_FORWARD) + priv->elapsed_time = overflow_msecs - priv->duration; + else + priv->elapsed_time = priv->duration + overflow_msecs; + + /* Or if the direction changed, we try and bounce */ + if (priv->direction != saved_direction) + priv->elapsed_time = priv->duration - priv->elapsed_time; - g_object_unref (timeline); - return priv->loop; + g_object_unref (timeline); + return TRUE; + } + else + { + clutter_timeline_rewind (timeline); + + g_object_unref (timeline); + return FALSE; + } } } diff --git a/tests/conform/test-timeline-interpolate.c b/tests/conform/test-timeline-interpolate.c index ec2f868..bc01d91 100644 --- a/tests/conform/test-timeline-interpolate.c +++ b/tests/conform/test-timeline-interpolate.c @@ -46,12 +46,14 @@ new_frame_cb (ClutterTimeline *timeline, /* If we expect to have interpolated past the end of the timeline * we keep track of the overflow so we can determine when - * the next timeout will happen. We then wrap expected_frames - * around TEST_TIMELINE_DURATION */ + * the next timeout will happen. We then clip expected_frames + * to TEST_TIMELINE_DURATION since clutter-timeline + * semantics guaranty this frame is always signaled before + * looping */ if (state->expected_frame > TEST_TIMELINE_DURATION) { loop_overflow = state->expected_frame - TEST_TIMELINE_DURATION; - state->expected_frame %= TEST_TIMELINE_DURATION; + state->expected_frame = TEST_TIMELINE_DURATION; } if (current_frame >= (state->expected_frame-TEST_ERROR_TOLERANCE) -- 2.7.4