From 5d8e439bc597159e3c9f0a8b65c0ae869dead3a8 Mon Sep 17 00:00:00 2001 From: Matthew Fennell Date: Sat, 27 Dec 2025 12:40:20 +0000 Subject: Import Upstream version 43.0 --- src/animation/gtd-animation-utils.h | 65 +++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 src/animation/gtd-animation-utils.h (limited to 'src/animation/gtd-animation-utils.h') diff --git a/src/animation/gtd-animation-utils.h b/src/animation/gtd-animation-utils.h new file mode 100644 index 0000000..b41bc12 --- /dev/null +++ b/src/animation/gtd-animation-utils.h @@ -0,0 +1,65 @@ +/* gtd-animation-utils.h + * + * Copyright 2020 Georges Basile Stavracas Neto + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + * + * SPDX-License-Identifier: GPL-3.0-or-later + */ + +#pragma once + +#include + +G_BEGIN_DECLS + + +/** + * GtdProgressFunc: + * @a: the initial value of an interval + * @b: the final value of an interval + * @progress: the progress factor, between 0 and 1 + * @retval: the value used to store the progress + * + * Prototype of the progress function used to compute the value + * between the two ends @a and @b of an interval depending on + * the value of @progress. + * + * The #GValue in @retval is already initialized with the same + * type as @a and @b. + * + * This function will be called by #GtdInterval if the + * type of the values of the interval was registered using + * gtd_interval_register_progress_func(). + * + * Return value: %TRUE if the function successfully computed + * the value and stored it inside @retval + */ +typedef gboolean (* GtdProgressFunc) (const GValue *a, + const GValue *b, + gdouble progress, + GValue *retval); + +void gtd_interval_register_progress_func (GType value_type, + GtdProgressFunc func); + + +gboolean gtd_has_progress_function (GType gtype); +gboolean gtd_run_progress_function (GType gtype, + const GValue *initial, + const GValue *final, + gdouble progress, + GValue *retval); + +G_END_DECLS -- cgit v1.2.3