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gdk/events: Set discrete scroll deltas in its constructor

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Instead of calculating the discrete scroll deltas in
GtkEventControllerScroll, move that code to the event constructor and
access the precalculated values using gdk_scroll_event_get_deltas.

Refactor, no functional changes.
This commit is contained in:
José Expósito 2021-09-20 19:59:45 +02:00 committed by Carlos Garnacho
parent 51ca454eef
commit 6ebb38e12e
2 changed files with 24 additions and 19 deletions
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23
gdk/gdkevents.c
View File

@ -2368,10 +2368,33 @@ gdk_scroll_event_new_discrete (GdkSurface *surface,
GdkScrollDirection direction)
{
GdkScrollEvent *self = gdk_event_alloc (GDK_SCROLL, surface, device, time);
double delta_x = 0, delta_y = 0;
switch (direction)
{
case GDK_SCROLL_UP:
delta_y = -1;
break;
case GDK_SCROLL_DOWN:
delta_y = 1;
break;
case GDK_SCROLL_LEFT:
delta_x = -1;
break;
case GDK_SCROLL_RIGHT:
delta_x = 1;
break;
case GDK_SCROLL_SMOOTH:
default:
g_assert_not_reached ();
break;
}
self->tool = tool != NULL ? g_object_ref (tool) : NULL;
self->state = state;
self->direction = direction;
self->delta_x = delta_x;
self->delta_y = delta_y;
self->unit = GDK_SCROLL_UNIT_WHEEL;
return (GdkEvent *) self;

20
gtk/gtkeventcontrollerscroll.c
View File

@ -416,25 +416,7 @@ gtk_event_controller_scroll_handle_event (GtkEventController *controller,
}
else
{
switch (direction)
{
case GDK_SCROLL_UP:
dy -= 1;
break;
case GDK_SCROLL_DOWN:
dy += 1;
break;
case GDK_SCROLL_LEFT:
dx -= 1;
break;
case GDK_SCROLL_RIGHT:
dx += 1;
break;
case GDK_SCROLL_SMOOTH:
default:
g_assert_not_reached ();
break;
}
gdk_scroll_event_get_deltas (event, &dx, &dy);
if ((scroll->flags & GTK_EVENT_CONTROLLER_SCROLL_VERTICAL) == 0)
dy = 0;