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/*
* Copyright (C) 2019 Purism SPC
*
* SPDX-License-Identifier: LGPL-2.1+
*/
#include "config.h"
#include "hdy-animation-private.h"
/**
* SECTION:hdy-animation
* @short_description: Animation helpers
* @title: Animation Helpers
*
* Animation helpers.
*
* Since: 0.0.11
*/
/**
* hdy_get_enable_animations:
* @widget: a #GtkWidget
*
* Returns whether animations are enabled for that widget. This should be used
* when implementing an animated widget to know whether to animate it or not.
*
* Returns: %TRUE if animations are enabled for @widget.
*
* Since: 0.0.11
*/
gboolean
hdy_get_enable_animations (GtkWidget *widget)
{
gboolean enable_animations = TRUE;
g_assert (GTK_IS_WIDGET (widget));
g_object_get (gtk_widget_get_settings (widget),
"gtk-enable-animations", &enable_animations,
NULL);
return enable_animations;
}
/**
* hdy_lerp: (skip)
* @a: the start
* @b: the end
* @t: the interpolation rate
*
* Computes the linear interpolation between @a and @b for @t.
*
* Returns: the linear interpolation between @a and @b for @t.
*
* Since: 0.0.11
*/
gdouble
hdy_lerp (gdouble a, gdouble b, gdouble t)
{
return a * (1.0 - t) + b * t;
}
/* From clutter-easing.c, based on Robert Penner's
* infamous easing equations, MIT license.
*/
/**
* hdy_ease_out_cubic:
* @t: the term
*
* Computes the ease out for @t.
*
* Returns: the ease out for @t.
*
* Since: 0.0.11
*/
gdouble
hdy_ease_out_cubic (gdouble t)
{
gdouble p = t - 1;
return p * p * p + 1;
}
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