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https://gitlab.gnome.org/GNOME/libmks.git
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356 lines
9.4 KiB
C
356 lines
9.4 KiB
C
/*
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* mks-touchable.c
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*
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* Copyright 2023 Bilal Elmoussaoui <belmouss@redhat.com>
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of the
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* License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser 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: LGPL-2.1-or-later
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*/
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#include "config.h"
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#include "mks-device-private.h"
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#include "mks-touchable.h"
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#include "mks-util-private.h"
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/**
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* MksTouchable:
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*
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* A virtualized QEMU touch device.
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*/
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struct _MksTouchable
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{
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MksDevice parent_instance;
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MksQemuMultiTouch *touch;
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int max_slots;
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};
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struct _MksTouchableClass
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{
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MksDeviceClass parent_instance;
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};
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G_DEFINE_FINAL_TYPE (MksTouchable, mks_touchable, MKS_TYPE_DEVICE)
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enum {
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PROP_0,
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PROP_MAX_SLOTS,
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N_PROPS
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};
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static GParamSpec *properties [N_PROPS];
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static void
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mks_touchable_set_max_slots (MksTouchable *self,
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int max_slots)
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{
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g_assert (MKS_IS_TOUCHABLE (self));
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// Per INPUT_EVENT_SLOTS_MIN / INPUT_EVENT_SLOTS_MAX in QEMU
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g_assert (max_slots >= 0 && max_slots <= 10);
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if (self->max_slots != max_slots)
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{
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self->max_slots = max_slots;
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g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_MAX_SLOTS]);
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}
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}
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static void
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mks_touchable_touch_notify_cb (MksTouchable *self,
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GParamSpec *pspec,
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MksQemuMultiTouch *touch)
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{
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MKS_ENTRY;
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g_assert (MKS_IS_TOUCHABLE (self));
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g_assert (pspec != NULL);
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g_assert (MKS_QEMU_IS_MULTI_TOUCH (touch));
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if (strcmp (pspec->name, "max-slots") == 0)
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mks_touchable_set_max_slots (self, mks_qemu_multi_touch_get_max_slots (touch));
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MKS_EXIT;
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}
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static void
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mks_touchable_set_touch (MksTouchable *self,
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MksQemuMultiTouch *touch)
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{
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g_assert (MKS_IS_TOUCHABLE (self));
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g_assert (!touch || MKS_QEMU_IS_MULTI_TOUCH (touch));
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g_assert (self->touch == NULL);
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if (g_set_object (&self->touch, touch))
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{
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g_signal_connect_object (self->touch,
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"notify",
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G_CALLBACK (mks_touchable_touch_notify_cb),
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self,
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G_CONNECT_SWAPPED);
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mks_touchable_set_max_slots (self, mks_qemu_multi_touch_get_max_slots (touch));
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}
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}
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static gboolean
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mks_touchable_setup (MksDevice *device,
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MksQemuObject *object)
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{
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MksTouchable *self = (MksTouchable *)device;
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g_autolist(GDBusInterface) interfaces = NULL;
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g_assert (MKS_IS_TOUCHABLE (self));
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g_assert (MKS_QEMU_IS_OBJECT (object));
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interfaces = g_dbus_object_get_interfaces (G_DBUS_OBJECT (object));
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for (const GList *iter = interfaces; iter; iter = iter->next)
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{
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GDBusInterface *iface = iter->data;
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if (MKS_QEMU_IS_MULTI_TOUCH (iface))
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mks_touchable_set_touch (self, MKS_QEMU_MULTI_TOUCH (iface));
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}
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return self->touch != NULL;
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}
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static void
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mks_touchable_dispose (GObject *object)
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{
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MksTouchable *self = (MksTouchable *)object;
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g_clear_object (&self->touch);
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G_OBJECT_CLASS (mks_touchable_parent_class)->dispose (object);
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}
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static void
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mks_touchable_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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MksTouchable *self = MKS_TOUCHABLE (object);
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switch (prop_id)
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{
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case PROP_MAX_SLOTS:
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g_value_set_int (value, mks_touchable_get_max_slots (self));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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}
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}
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static void
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mks_touchable_class_init (MksTouchableClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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MksDeviceClass *device_class = MKS_DEVICE_CLASS (klass);
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device_class->setup = mks_touchable_setup;
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object_class->dispose = mks_touchable_dispose;
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object_class->get_property = mks_touchable_get_property;
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/**
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* MksTouchable:max-slots:
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*
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* The maximum number of slots.
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*/
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properties [PROP_MAX_SLOTS] =
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g_param_spec_int ("max-slots", NULL, NULL,
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0, 10, 0,
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(G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_properties (object_class, N_PROPS, properties);
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}
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static void
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mks_touchable_init (MksTouchable *self)
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{
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}
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static gboolean
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check_touch (MksTouchable *self,
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GError **error)
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{
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if (self->touch == NULL)
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{
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g_set_error_literal (error,
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G_IO_ERROR,
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G_IO_ERROR_NOT_CONNECTED,
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"Not connected");
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return FALSE;
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}
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return TRUE;
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}
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static void
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mks_touchable_send_event_cb (GObject *object,
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GAsyncResult *result,
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gpointer user_data)
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{
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MksQemuMultiTouch *touch = (MksQemuMultiTouch *)object;
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g_autoptr(GTask) task = user_data;
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g_autoptr(GError) error = NULL;
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MKS_ENTRY;
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g_assert (MKS_QEMU_IS_MULTI_TOUCH (touch));
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g_assert (G_IS_ASYNC_RESULT (result));
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g_assert (G_IS_TASK (task));
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if (!mks_qemu_multi_touch_call_send_event_finish (touch, result, &error))
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g_task_return_error (task, g_steal_pointer (&error));
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else
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g_task_return_boolean (task, TRUE);
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MKS_EXIT;
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}
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/**
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* mks_touchable_send_event:
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* @self: an #MksTouchable
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* @num_slot: the slot number
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* @x: the x absolute coordinate
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* @y: the y absolute coordinate
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* @cancellable: (nullable): a #GCancellable
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* @callback: a #GAsyncReadyCallback to execute upon completion
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* @user_data: closure data for @callback
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*
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* Send a touch event.
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*/
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void
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mks_touchable_send_event (MksTouchable *self,
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MksTouchEventKind kind,
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guint64 num_slot,
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double x,
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double y,
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GCancellable *cancellable,
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GAsyncReadyCallback callback,
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gpointer user_data)
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{
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g_autoptr(GTask) task = NULL;
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g_autoptr(GError) error = NULL;
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MKS_ENTRY;
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g_return_if_fail (MKS_IS_TOUCHABLE (self));
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g_return_if_fail (!cancellable || G_IS_CANCELLABLE (cancellable));
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task = g_task_new (self, cancellable, callback, user_data);
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g_task_set_source_tag (task, mks_touchable_send_event);
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if (!check_touch (self, &error))
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g_task_return_error (task, g_steal_pointer (&error));
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else
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mks_qemu_multi_touch_call_send_event (self->touch, kind,
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num_slot, x, y,
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cancellable,
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mks_touchable_send_event_cb,
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g_steal_pointer (&task));
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MKS_EXIT;
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}
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/**
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* mks_touchable_send_event_finish:
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* @self: a `MksTouchable`
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* @result: a #GAsyncResult provided to callback
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* @error: a location for a #GError, or %NULL
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*
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* Completes a call to [method@Mks.Touchable.send_event].
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*
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* Returns: %TRUE if the operation completed successfully; otherwise %FALSE
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* and @error is set.
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*/
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gboolean
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mks_touchable_send_event_finish (MksTouchable *self,
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GAsyncResult *result,
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GError **error)
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{
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gboolean ret;
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MKS_ENTRY;
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g_return_val_if_fail (MKS_IS_TOUCHABLE (self), FALSE);
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g_return_val_if_fail (g_task_is_valid (result, self), FALSE);
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ret = g_task_propagate_boolean (G_TASK (result), error);
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MKS_RETURN (ret);
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}
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/**
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* mks_touchable_send_event_sync:
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* @self: a `MksTouchable`
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* @kind: the event kind
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* @num_slot: the slot number
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* @x: the x absolute coordinate
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* @y: the y absolute coordinate
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* @cancellable: (nullable): a #GCancellable
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* @error: a location for a #GError, or %NULL
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*
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* Synchronously send a touch event.
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*
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* Returns: %TRUE if the operation was acknowledged by the QEMU instance;
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* otherwise %FALSE and @error is set.
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*/
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gboolean
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mks_touchable_send_event_sync (MksTouchable *self,
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MksTouchEventKind kind,
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guint64 num_slot,
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double x,
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double y,
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GCancellable *cancellable,
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GError **error)
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{
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gboolean ret;
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MKS_ENTRY;
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g_return_val_if_fail (MKS_IS_TOUCHABLE (self), FALSE);
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g_return_val_if_fail (!cancellable || G_IS_CANCELLABLE (cancellable), FALSE);
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if (!check_touch (self, error))
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MKS_RETURN (FALSE);
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ret = mks_qemu_multi_touch_call_send_event_sync (self->touch, kind,
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num_slot, x, y,
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cancellable, error);
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MKS_RETURN (ret);
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}
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/**
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* mks_touchable_get_max_slots:
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* @self: A `MksTouchable`.
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*
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* Returns the maximum number of slots.
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*/
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int
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mks_touchable_get_max_slots (MksTouchable *self)
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{
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g_return_val_if_fail (MKS_IS_TOUCHABLE (self), 0);
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return self->max_slots;
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}
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