Learning_GTK4_tree/gdk/macos/gdkmacosdisplay-feedback.c

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2023-12-12 11:36:42 +01:00
/*
* Copyright © 2022 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#include "config.h"
#include <AppKit/AppKit.h>
#include "gdkmacosdisplay-private.h"
#include "gdkmacossurface-private.h"
static void
gdk_macos_display_user_defaults_changed_cb (CFNotificationCenterRef center,
void *observer,
CFStringRef name,
const void *object,
CFDictionaryRef userInfo)
{
GdkMacosDisplay *self = observer;
g_assert (GDK_IS_MACOS_DISPLAY (self));
_gdk_macos_display_reload_settings (self);
}
static void
gdk_macos_display_monitors_changed_cb (CFNotificationCenterRef center,
void *observer,
CFStringRef name,
const void *object,
CFDictionaryRef userInfo)
{
GdkMacosDisplay *self = observer;
g_assert (GDK_IS_MACOS_DISPLAY (self));
_gdk_macos_display_reload_monitors (self);
/* Now we need to update all our surface positions since they
* probably just changed origins.
*/
for (const GList *iter = _gdk_macos_display_get_surfaces (self);
iter != NULL;
iter = iter->next)
{
GdkMacosSurface *surface = iter->data;
g_assert (GDK_IS_MACOS_SURFACE (surface));
_gdk_macos_surface_monitor_changed (surface);
}
}
void
_gdk_macos_display_feedback_init (GdkMacosDisplay *self)
{
g_return_if_fail (GDK_IS_MACOS_DISPLAY (self));
CFNotificationCenterAddObserver (CFNotificationCenterGetLocalCenter (),
self,
gdk_macos_display_monitors_changed_cb,
CFSTR ("NSApplicationDidChangeScreenParametersNotification"),
NULL,
CFNotificationSuspensionBehaviorDeliverImmediately);
CFNotificationCenterAddObserver (CFNotificationCenterGetDistributedCenter (),
self,
gdk_macos_display_user_defaults_changed_cb,
CFSTR ("NSUserDefaultsDidChangeNotification"),
NULL,
CFNotificationSuspensionBehaviorDeliverImmediately);
}
void
_gdk_macos_display_feedback_destroy (GdkMacosDisplay *self)
{
g_return_if_fail (GDK_IS_MACOS_DISPLAY (self));
CFNotificationCenterRemoveObserver (CFNotificationCenterGetDistributedCenter (),
self,
CFSTR ("NSApplicationDidChangeScreenParametersNotification"),
NULL);
CFNotificationCenterRemoveObserver (CFNotificationCenterGetDistributedCenter (),
self,
CFSTR ("NSUserDefaultsDidChangeNotification"),
NULL);
}