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views/month: Animate discrete scrolls

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When scrolling with a scroll wheel, animate towards a target
row. If multiple scrolls happen before the animation completes,
change the target row of the animation.
This commit is contained in:
Georges Basile Stavracas Neto
2023-08-13 18:37:12 -03:00
parent 8f04f40272
commit 1fd984306f
1 changed files with 79 additions and 8 deletions
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src/gui/views/gcal-month-view.c
+79 -8
View File
@@ -564,6 +564,79 @@ snap_to_top_row (GcalMonthView *self)
GCAL_EXIT;
}
static void
animate_row_scroll_cb (gdouble value,
gpointer user_data)
{
GcalMonthView *self = GCAL_MONTH_VIEW (user_data);
gdouble *last_offset_location;
gdouble dy;
last_offset_location = g_object_get_data (G_OBJECT (self->row_offset_animation), "last-offset");
g_assert (last_offset_location != NULL);
dy = value - *last_offset_location;
offset_and_shuffle_rows (self, dy);
*last_offset_location = value;
}
static void
animate_row_scroll (GcalMonthView *self,
gint n_rows)
{
GCAL_ENTRY;
g_assert (n_rows != 0);
update_active_date (self);
dump_row_ranges (self);
if (!self->row_offset_animation)
{
g_autoptr (AdwAnimationTarget) animation_target = NULL;
g_autofree gdouble *last_offset_location = NULL;
animation_target = adw_callback_animation_target_new (animate_row_scroll_cb, self, NULL);
self->row_offset_animation = adw_timed_animation_new (GTK_WIDGET (self),
self->row_offset,
n_rows,
150, // ms
g_steal_pointer (&animation_target));
adw_timed_animation_set_easing (ADW_TIMED_ANIMATION (self->row_offset_animation),
ADW_EASE_OUT_QUAD);
g_signal_connect (self->row_offset_animation,
"done",
G_CALLBACK (on_row_offset_animation_done),
self);
last_offset_location = g_malloc (sizeof (gdouble));
*last_offset_location = self->row_offset;
g_object_set_data_full (G_OBJECT (self->row_offset_animation),
"last-offset",
g_steal_pointer (&last_offset_location),
g_free);
adw_animation_play (self->row_offset_animation);
}
else
{
gdouble target_value;
target_value = adw_timed_animation_get_value_to (ADW_TIMED_ANIMATION (self->row_offset_animation));
adw_animation_pause (self->row_offset_animation);
adw_timed_animation_set_value_to (ADW_TIMED_ANIMATION (self->row_offset_animation), target_value + n_rows);
adw_animation_play (self->row_offset_animation);
}
GCAL_EXIT;
}
/*
* Callbacks
@@ -629,6 +702,7 @@ on_discrete_scroll_controller_scroll_cb (GtkEventControllerScroll *scroll_contro
GcalMonthView *self)
{
GdkEvent *current_event;
gint n_rows = 0;
GCAL_ENTRY;
@@ -637,27 +711,24 @@ on_discrete_scroll_controller_scroll_cb (GtkEventControllerScroll *scroll_contro
switch (gdk_scroll_event_get_direction (current_event))
{
case GDK_SCROLL_UP:
move_bottom_row_to_top (self);
n_rows = -1;
break;
case GDK_SCROLL_DOWN:
move_top_row_to_bottom (self);
n_rows = 1;
break;
default:
GCAL_RETURN (GDK_EVENT_PROPAGATE);
}
gtk_widget_remove_css_class (GTK_WIDGET (self), "scrolling");
gtk_widget_add_css_class (GTK_WIDGET (self), "scrolling");
maybe_popdown_overflow_popover (self);
cancel_row_offset_animation (self);
cancel_deceleration (self);
update_active_date (self);
dump_row_ranges (self);
self->row_offset = 0.0;
gtk_widget_queue_allocate (GTK_WIDGET (self));
animate_row_scroll (self, n_rows);
GCAL_RETURN (GDK_EVENT_STOP);
}