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edfe01bf99
This is an object which is meant to be acquired/released in response to user input. Currently, it will inhibit the shortcuts in the display server if possible. Some additional things may be added eventually like relative pointers or similar (by grabbing pointer input).
158 lines
4.1 KiB
C
158 lines
4.1 KiB
C
/* mks-inhibitor.c
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*
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* Copyright 2023 Christian Hergert <chergert@redhat.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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#include "config.h"
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#include "mks-inhibitor-private.h"
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struct _MksInhibitor
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{
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GObject parent_instance;
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GdkToplevel *toplevel;
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guint shortcuts_inhibited : 1;
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};
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G_DEFINE_FINAL_TYPE (MksInhibitor, mks_inhibitor, G_TYPE_OBJECT)
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static void
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notify_cb (GdkToplevel *toplevel,
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GParamSpec *pspec,
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gpointer user_data)
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{
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gboolean shortcuts_inhibited;
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g_object_get (toplevel,
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"shortcuts-inhibited", &shortcuts_inhibited,
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NULL);
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g_debug ("Toplevel %p shortcuts-inhibited: %s\n",
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toplevel,
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shortcuts_inhibited ? "YES" : "NO");
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}
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static void
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inhibit_shortcuts (MksInhibitor *self,
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GdkEvent *event)
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{
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guint count;
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g_assert (MKS_IS_INHIBITOR (self));
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g_assert (GDK_IS_EVENT (event));
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g_assert (GDK_IS_TOPLEVEL (self->toplevel));
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g_assert (self->shortcuts_inhibited == FALSE);
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count = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (self->toplevel), "MKS_INHIBITOR_COUNT"));
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count++;
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g_object_set_data (G_OBJECT (self->toplevel), "MKS_INHIBITOR_COUNT", GUINT_TO_POINTER (count));
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if (count == 1)
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{
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g_signal_connect (self->toplevel,
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"notify::shortcuts-inhibited",
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G_CALLBACK (notify_cb),
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NULL);
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gdk_toplevel_inhibit_system_shortcuts (self->toplevel, event);
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notify_cb (self->toplevel, NULL, NULL);
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}
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self->shortcuts_inhibited = TRUE;
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}
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static void
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uninhibit_shortcuts (MksInhibitor *self)
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{
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guint count;
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g_assert (MKS_IS_INHIBITOR (self));
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g_assert (GDK_IS_TOPLEVEL (self->toplevel));
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g_assert (self->shortcuts_inhibited == TRUE);
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count = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (self->toplevel), "MKS_INHIBITOR_COUNT"));
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count--;
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g_object_set_data (G_OBJECT (self->toplevel), "MKS_INHIBITOR_COUNT", GUINT_TO_POINTER (count));
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if (count == 0)
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{
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g_signal_handlers_disconnect_by_func (self->toplevel,
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G_CALLBACK (notify_cb),
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NULL);
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gdk_toplevel_restore_system_shortcuts (self->toplevel);
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}
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self->shortcuts_inhibited = FALSE;
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}
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static void
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mks_inhibitor_dispose (GObject *object)
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{
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MksInhibitor *self = (MksInhibitor *)object;
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if (self->shortcuts_inhibited)
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uninhibit_shortcuts (self);
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G_OBJECT_CLASS (mks_inhibitor_parent_class)->dispose (object);
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}
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static void
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mks_inhibitor_class_init (MksInhibitorClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->dispose = mks_inhibitor_dispose;
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}
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static void
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mks_inhibitor_init (MksInhibitor *self)
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{
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}
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MksInhibitor *
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mks_inhibitor_new (GtkWidget *widget,
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GdkEvent *event)
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{
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MksInhibitor *self;
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GdkSurface *surface;
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GtkNative *native;
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g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
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g_return_val_if_fail (GDK_IS_EVENT (event), NULL);
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self = g_object_new (MKS_TYPE_INHIBITOR, NULL);
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if ((native = gtk_widget_get_native (widget)) &&
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(surface = gtk_native_get_surface (native)) &&
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GDK_IS_TOPLEVEL (surface))
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{
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if (g_set_object (&self->toplevel, GDK_TOPLEVEL (surface)))
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inhibit_shortcuts (self, event);
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}
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return self;
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}
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void
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mks_inhibitor_uninhibit (MksInhibitor *self)
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{
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g_return_if_fail (MKS_IS_INHIBITOR (self));
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if (self->shortcuts_inhibited)
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uninhibit_shortcuts (self);
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}
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