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248 lines
6.5 KiB
C
248 lines
6.5 KiB
C
/*
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* mks-screen-resizer.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-screen-attributes.h"
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#include "mks-screen-resizer-private.h"
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#include "mks-util-private.h"
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static void mks_screen_resizer_reconfigure (MksScreenResizer *self,
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MksScreenAttributes *attributes);
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struct _MksScreenResizer
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{
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GObject parent_instance;
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MksScreen *screen;
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/* Remember our last operation */
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MksScreenAttributes *next_op;
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MksScreenAttributes *previous_op;
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guint in_progress : 1;
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};
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enum {
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PROP_0,
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PROP_SCREEN,
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N_PROPS
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};
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G_DEFINE_FINAL_TYPE (MksScreenResizer, mks_screen_resizer, G_TYPE_OBJECT)
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static GParamSpec *properties [N_PROPS];
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static void
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mks_screen_resizer_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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MksScreenResizer *self = MKS_SCREEN_RESIZER (object);
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switch (prop_id)
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{
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case PROP_SCREEN:
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g_value_set_object (value, self->screen);
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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_screen_resizer_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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MksScreenResizer *self = MKS_SCREEN_RESIZER (object);
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switch (prop_id)
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{
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case PROP_SCREEN:
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mks_screen_resizer_set_screen (self, g_value_get_object (value));
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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_screen_resizer_dispose (GObject *object)
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{
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MksScreenResizer *self = (MksScreenResizer *)object;
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g_clear_object (&self->screen);
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g_clear_pointer (&self->next_op, mks_screen_attributes_free);
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g_clear_pointer (&self->previous_op, mks_screen_attributes_free);
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G_OBJECT_CLASS (mks_screen_resizer_parent_class)->dispose (object);
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}
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static void
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mks_screen_resizer_class_init (MksScreenResizerClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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object_class->dispose = mks_screen_resizer_dispose;
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object_class->get_property = mks_screen_resizer_get_property;
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object_class->set_property = mks_screen_resizer_set_property;
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properties[PROP_SCREEN] =
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g_param_spec_object ("screen", NULL, NULL,
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MKS_TYPE_SCREEN,
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(G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY | 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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on_screen_configure_cb (GObject *object,
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GAsyncResult *result,
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gpointer user_data)
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{
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MksScreen *screen = (MksScreen *)object;
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g_autoptr(MksScreenAttributes) attributes = NULL;
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g_autoptr(MksScreenResizer) self = user_data;
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g_autoptr(GError) error = NULL;
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MKS_ENTRY;
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g_assert (MKS_IS_SCREEN (screen));
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g_assert (G_IS_ASYNC_RESULT (result));
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g_assert (MKS_IS_SCREEN_RESIZER (self));
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if (!mks_screen_configure_finish (screen, result, &error))
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g_debug ("Screen configure failed: %s", error->message);
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self->in_progress = FALSE;
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attributes = g_steal_pointer (&self->next_op);
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if (attributes && !mks_screen_attributes_equal (attributes, self->previous_op))
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mks_screen_resizer_reconfigure (self, g_steal_pointer (&attributes));
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MKS_EXIT;
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}
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/**
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* mks_screen_resizer_new:
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*
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* Returns: (transfer full): a new #MksScreenResizer
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*/
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MksScreenResizer *
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mks_screen_resizer_new (void)
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{
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return g_object_new (MKS_TYPE_SCREEN_RESIZER, NULL);
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}
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static void
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mks_screen_resizer_init (MksScreenResizer *self)
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{
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}
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/**
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* mks_screen_resizer_set_screen:
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* @self: A `MksScreenResizer`
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* @screen: A `MksScreen`
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*
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* Sets the screen to resize when a resize is queued.
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*/
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void
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mks_screen_resizer_set_screen (MksScreenResizer *self,
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MksScreen *screen)
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{
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MKS_ENTRY;
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g_return_if_fail (MKS_IS_SCREEN_RESIZER (self));
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g_return_if_fail (!screen || MKS_IS_SCREEN (screen));
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if (g_set_object (&self->screen, screen))
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g_object_notify_by_pspec (G_OBJECT (self), properties [PROP_SCREEN]);
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MKS_EXIT;
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}
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/**
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* mks_screen_resizer_queue_resize:
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* @self: A `MksScreenResizer`
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* @attributes: (transfer full): The new attributes to queue
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*
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* Schedule the VM display configuration with the passed attributes if
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* there is no ongoing operation. Otherwise, add the attributes to
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* a queue of updates.
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*/
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void
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mks_screen_resizer_queue_resize (MksScreenResizer *self,
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MksScreenAttributes *attributes)
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{
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MKS_ENTRY;
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g_return_if_fail (MKS_IS_SCREEN_RESIZER (self));
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if (mks_screen_attributes_equal (attributes, self->previous_op))
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MKS_EXIT;
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if (self->in_progress)
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{
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g_clear_pointer (&self->next_op, mks_screen_attributes_free);
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self->next_op = g_steal_pointer (&attributes);
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MKS_EXIT;
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}
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mks_screen_resizer_reconfigure (self, attributes);
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MKS_EXIT;
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}
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/**
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* mks_screen_resizer_reconfigure:
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* @self: A `MksScreenResizer`
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* @attributes: (transfer full): The attributes to reconfigure
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*
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* Configure the screen with the passed attributes.
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*/
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static void
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mks_screen_resizer_reconfigure (MksScreenResizer *self,
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MksScreenAttributes *attributes)
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{
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MKS_ENTRY;
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g_assert (MKS_IS_SCREEN_RESIZER (self));
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self->in_progress = TRUE;
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g_clear_pointer (&self->previous_op, mks_screen_attributes_free);
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self->previous_op = mks_screen_attributes_copy (attributes);
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mks_screen_configure (self->screen,
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g_steal_pointer (&attributes),
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NULL,
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on_screen_configure_cb,
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g_object_ref (self));
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MKS_EXIT;
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}
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