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/*
* Copyright (C) 2025 Igalia S.L.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "WPEScreenSyncObserver.h"
#include <wtf/glib/WTFGType.h>
/**
* WPEScreenSyncObserver:
*
* A screen sync observer.
*/
struct _WPEScreenSyncObserverPrivate {
gboolean isActive;
WPEScreenSyncObserverSyncFunc syncFunc;
gpointer userData;
GDestroyNotify destroyNotify;
};
WEBKIT_DEFINE_ABSTRACT_TYPE(WPEScreenSyncObserver, wpe_screen_sync_observer, G_TYPE_OBJECT)
static void wpeScreenSyncObserverDispose(GObject* object)
{
auto* priv = WPE_SCREEN_SYNC_OBSERVER(object)->priv;
if (priv->syncFunc) {
if (priv->destroyNotify) {
priv->destroyNotify(priv->userData);
priv->destroyNotify = nullptr;
}
priv->syncFunc = nullptr;
priv->userData = nullptr;
}
G_OBJECT_CLASS(wpe_screen_sync_observer_parent_class)->dispose(object);
}
static void wpeScreenSyncObserverSync(WPEScreenSyncObserver* observer)
{
auto* priv = observer->priv;
priv->syncFunc(observer, priv->userData);
}
static void wpe_screen_sync_observer_class_init(WPEScreenSyncObserverClass* screenSyncObserverClass)
{
auto* objectClass = G_OBJECT_CLASS(screenSyncObserverClass);
objectClass->dispose = wpeScreenSyncObserverDispose;
screenSyncObserverClass->sync = wpeScreenSyncObserverSync;
}
/**
* wpe_screen_sync_observer_set_callback:
* @observer: a #WPEScreenSyncObserver
* @sync_func: (scope notified): a #WPEScreenSyncObserverSyncFunc
* @user_data: data to pass to @sync_func
* @destroy_notify: (nullable): function for freeing @user_data or %NULL.
*
* Add a @sync_func to be called from a secondary thread when the screen sync is triggered.
* The callback must be set only once and before calling wpe_screen_sync_start().
*/
void wpe_screen_sync_observer_set_callback(WPEScreenSyncObserver* observer, WPEScreenSyncObserverSyncFunc syncFunc, gpointer userData, GDestroyNotify destroyNotify)
{
g_return_if_fail(WPE_IS_SCREEN_SYNC_OBSERVER(observer));
g_return_if_fail(syncFunc);
auto* priv = observer->priv;
g_return_if_fail(!priv->isActive);
g_return_if_fail(!priv->syncFunc);
priv->syncFunc = syncFunc;
priv->userData = userData;
priv->destroyNotify = destroyNotify;
}
/**
* wpe_screen_sync_observer_start:
* @observer: a #WPEScreenSyncObserver
*
* Start the @observer.
*/
void wpe_screen_sync_observer_start(WPEScreenSyncObserver* observer)
{
g_return_if_fail(WPE_IS_SCREEN_SYNC_OBSERVER(observer));
auto* priv = observer->priv;
g_return_if_fail(priv->syncFunc);
if (priv->isActive)
return;
auto* screenSyncObserverClass = WPE_SCREEN_SYNC_OBSERVER_GET_CLASS(observer);
screenSyncObserverClass->start(observer);
priv->isActive = TRUE;
}
/**
* wpe_screen_sync_observer_stop:
* @observer: a #WPEScreenSyncObserver
*
* Stop the @observer.
*/
void wpe_screen_sync_observer_stop(WPEScreenSyncObserver* observer)
{
g_return_if_fail(WPE_IS_SCREEN_SYNC_OBSERVER(observer));
auto* priv = observer->priv;
if (!priv->isActive)
return;
auto* screenSyncObserverClass = WPE_SCREEN_SYNC_OBSERVER_GET_CLASS(observer);
screenSyncObserverClass->stop(observer);
priv->isActive = FALSE;
}
/**
* wpe_screen_sync_observer_is_active:
* @observer: a #WPEScreenSyncObserver
*
* Return whether @observer is active.
*
* Returns: %TRUE if @observer is active, or %FALSE otherwise
*/
gboolean wpe_screen_sync_observer_is_active(WPEScreenSyncObserver* observer)
{
g_return_val_if_fail(WPE_IS_SCREEN_SYNC_OBSERVER(observer), FALSE);
return observer->priv->isActive;
}
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