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element: Make return value of setters mean something

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Setters return values should return %FALSE **only** when the value
could not be set, not when unchanged or when the subclass handled
it itself!

This patches makes it so the return value is meaningul by allowing
subclasses return anything different than `TRUE` or `FALSE` (convention
is -1) to let the subclass now that it took care of everything and
no signal should be emited.
This commit is contained in:
Thibault Saunier 2019-05-02 11:41:10 -04:00
parent 2ab26ab306
commit d87578c843
6 changed files with 26 additions and 19 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
ges/ges-clip.c
View file

@ -149,7 +149,7 @@ _set_start (GESTimelineElement * element, GstClockTime start)
}
container->children_control_mode = GES_CHILDREN_UPDATE;
return FALSE;
return -1;
}
static gboolean

2
ges/ges-group.c
View file

@ -411,7 +411,7 @@ _set_duration (GESTimelineElement * element, GstClockTime duration)
_set_duration0 (element, last_child_end - _START (element));
priv->setting_value = FALSE;
return FALSE;
return -1;
}
/****************************************************

7
ges/ges-source-clip.c
View file

@ -56,9 +56,10 @@ _set_start (GESTimelineElement * element, GstClockTime start)
if (element->timeline
&& !ELEMENT_FLAG_IS_SET (element, GES_TIMELINE_ELEMENT_SET_SIMPLE)
&& !ELEMENT_FLAG_IS_SET (toplevel, GES_TIMELINE_ELEMENT_SET_SIMPLE)) {
ges_timeline_move_object_simple (element->timeline, element, NULL,
GES_EDGE_NONE, start);
return FALSE;
if (!ges_timeline_move_object_simple (element->timeline, element, NULL,
GES_EDGE_NONE, start))
return FALSE;
return -1;
}
return

15
ges/ges-timeline-element.c
View file

@ -721,15 +721,16 @@ ges_timeline_element_set_start (GESTimelineElement * self, GstClockTime start)
gst_object_unref (toplevel_container);
if (klass->set_start) {
gboolean res = klass->set_start (self, start);
if (res) {
gint res = klass->set_start (self, start);
if (res == TRUE) {
self->start = start;
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_START]);
}
GST_DEBUG_OBJECT (self, "New start: %" GST_TIME_FORMAT,
GST_TIME_ARGS (GES_TIMELINE_ELEMENT_START (self)));
return res;
return ! !res;
}
GST_WARNING_OBJECT (self, "No set_start virtual method implementation"
@ -764,12 +765,12 @@ ges_timeline_element_set_inpoint (GESTimelineElement * self,
if (klass->set_inpoint) {
gboolean res = klass->set_inpoint (self, inpoint);
if (res) {
if (res == TRUE) {
self->inpoint = inpoint;
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_INPOINT]);
}
return res;
return ! !res;
}
GST_DEBUG_OBJECT (self, "No set_inpoint virtual method implementation"
@ -842,12 +843,12 @@ ges_timeline_element_set_duration (GESTimelineElement * self,
if (klass->set_duration) {
gboolean res = klass->set_duration (self, duration);
if (res) {
if (res == TRUE) {
self->duration = duration;
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_DURATION]);
}
return res;
return ! !res;
}
GST_WARNING_OBJECT (self, "No set_duration virtual method implementation"

12
ges/ges-timeline-element.h
View file

@ -163,9 +163,15 @@ struct _GESTimelineElement
/**
* GESTimelineElementClass:
* @set_parent: method to set the parent of a #GESTimelineElement.
* @set_start: method to set the start of a #GESTimelineElement
* @set_duration: method to set the duration of a #GESTimelineElement
* @set_inpoint: method to set the inpoint of a #GESTimelineElement
* @set_start: method to set the start of a #GESTimelineElement,
* -1 means that the subclass handled emiting the notify signal and
* the base class should return TRUE.
* @set_duration: method to set the duration of a #GESTimelineElement,
* -1 means that the subclass handled emiting the notify signal and
* the base class should return TRUE.
* @set_inpoint: method to set the inpoint of a #GESTimelineElement,
* -1 means that the subclass handled emiting the notify signal and
* the base class should return TRUE.
* @set_max_duration: method to set the maximun duration of a #GESTimelineElement
* @set_priority: method to set the priority of a #GESTimelineElement
* @ripple: method to ripple an object

7
ges/ges-track-element.c
View file

@ -480,7 +480,7 @@ _set_start (GESTimelineElement * element, GstClockTime start)
g_return_val_if_fail (object->priv->nleobject, FALSE);
if (G_UNLIKELY (start == _START (object)))
return FALSE;
return -1;
g_object_set (object->priv->nleobject, "start", start, NULL);
@ -495,8 +495,7 @@ _set_inpoint (GESTimelineElement * element, GstClockTime inpoint)
g_return_val_if_fail (object->priv->nleobject, FALSE);
if (G_UNLIKELY (inpoint == _INPOINT (object)))
return FALSE;
return -1;
g_object_set (object->priv->nleobject, "inpoint", inpoint, NULL);
_update_control_bindings (element, inpoint, GST_CLOCK_TIME_NONE);
@ -517,7 +516,7 @@ _set_duration (GESTimelineElement * element, GstClockTime duration)
duration = _MAXDURATION (element) - _INPOINT (object);
if (G_UNLIKELY (duration == _DURATION (object)))
return FALSE;
return -1;
g_object_set (priv->nleobject, "duration", duration, NULL);