PIKApp/app/gui/pikadbusservice.c

462 lines
14 KiB
C

/* PIKA - Photo and Image Kooker Application
* a rebranding of The GNU Image Manipulation Program (created with heckimp)
* A derived work which may be trivial. However, any changes may be (C)2023 by Aldercone Studio
*
* Original copyright, applying to most contents (license remains unchanged):
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* PikaDBusService
* Copyright (C) 2007, 2008 Sven Neumann <sven@gimp.org>
* Copyright (C) 2013 Michael Natterer <mitch@gimp.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <gegl.h>
#include <gtk/gtk.h>
#include "gui-types.h"
#include "core/pika.h"
#include "core/pika-batch.h"
#include "core/pikacontainer.h"
#include "file/file-open.h"
#include "display/pikadisplay.h"
#include "display/pikadisplayshell.h"
#include "pikadbusservice.h"
typedef struct
{
GFile *file;
gboolean as_new;
gchar *interpreter;
gchar *command;
} IdleData;
static void pika_dbus_service_ui_iface_init (PikaDBusServiceUIIface *iface);
static void pika_dbus_service_dispose (GObject *object);
static void pika_dbus_service_finalize (GObject *object);
static gboolean pika_dbus_service_activate (PikaDBusServiceUI *service,
GDBusMethodInvocation *invocation);
static gboolean pika_dbus_service_open (PikaDBusServiceUI *service,
GDBusMethodInvocation *invocation,
const gchar *uri);
static gboolean pika_dbus_service_open_as_new (PikaDBusServiceUI *service,
GDBusMethodInvocation *invocation,
const gchar *uri);
static gboolean pika_dbus_service_batch_run (PikaDBusServiceUI *service,
GDBusMethodInvocation *invocation,
const gchar *batch_interpreter,
const gchar *batch_command);
static void pika_dbus_service_pika_opened (Pika *pika,
GFile *file,
PikaDBusService *service);
static gboolean pika_dbus_service_queue_open (PikaDBusService *service,
const gchar *uri,
gboolean as_new);
static gboolean pika_dbus_service_queue_batch (PikaDBusService *service,
const gchar *interpreter,
const gchar *command);
static gboolean pika_dbus_service_process_idle (PikaDBusService *service);
static IdleData * pika_dbus_service_open_data_new (PikaDBusService *service,
const gchar *uri,
gboolean as_new);
static IdleData * pika_dbus_service_batch_data_new (PikaDBusService *service,
const gchar *interpreter,
const gchar *command);
static void pika_dbus_service_idle_data_free (IdleData *data);
G_DEFINE_TYPE_WITH_CODE (PikaDBusService, pika_dbus_service,
PIKA_DBUS_SERVICE_TYPE_UI_SKELETON,
G_IMPLEMENT_INTERFACE (PIKA_DBUS_SERVICE_TYPE_UI,
pika_dbus_service_ui_iface_init))
#define parent_class pika_dbus_service_parent_class
static void
pika_dbus_service_class_init (PikaDBusServiceClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->dispose = pika_dbus_service_dispose;
object_class->finalize = pika_dbus_service_finalize;
}
static void
pika_dbus_service_init (PikaDBusService *service)
{
service->queue = g_queue_new ();
}
static void
pika_dbus_service_ui_iface_init (PikaDBusServiceUIIface *iface)
{
iface->handle_activate = pika_dbus_service_activate;
iface->handle_open = pika_dbus_service_open;
iface->handle_open_as_new = pika_dbus_service_open_as_new;
iface->handle_batch_run = pika_dbus_service_batch_run;
}
GObject *
pika_dbus_service_new (Pika *pika)
{
PikaDBusService *service;
g_return_val_if_fail (PIKA_IS_PIKA (pika), NULL);
service = g_object_new (PIKA_TYPE_DBUS_SERVICE, NULL);
service->pika = pika;
g_signal_connect_object (pika, "image-opened",
G_CALLBACK (pika_dbus_service_pika_opened),
service, 0);
return G_OBJECT (service);
}
static void
pika_dbus_service_dispose (GObject *object)
{
PikaDBusService *service = PIKA_DBUS_SERVICE (object);
if (service->source)
{
g_source_remove (g_source_get_id (service->source));
service->source = NULL;
service->timeout_source = FALSE;
}
while (! g_queue_is_empty (service->queue))
{
pika_dbus_service_idle_data_free (g_queue_pop_head (service->queue));
}
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
pika_dbus_service_finalize (GObject *object)
{
PikaDBusService *service = PIKA_DBUS_SERVICE (object);
if (service->queue)
{
g_queue_free (service->queue);
service->queue = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
gboolean
pika_dbus_service_activate (PikaDBusServiceUI *service,
GDBusMethodInvocation *invocation)
{
Pika *pika = PIKA_DBUS_SERVICE (service)->pika;
/* We want to be called again later in case that PIKA is not fully
* started yet.
*/
if (pika_is_restored (pika))
{
PikaObject *display;
display = pika_container_get_first_child (pika->displays);
if (display)
pika_display_shell_present (pika_display_get_shell (PIKA_DISPLAY (display)));
}
pika_dbus_service_ui_complete_activate (service, invocation);
return TRUE;
}
gboolean
pika_dbus_service_open (PikaDBusServiceUI *service,
GDBusMethodInvocation *invocation,
const gchar *uri)
{
gboolean success;
success = pika_dbus_service_queue_open (PIKA_DBUS_SERVICE (service),
uri, FALSE);
pika_dbus_service_ui_complete_open (service, invocation, success);
return TRUE;
}
gboolean
pika_dbus_service_open_as_new (PikaDBusServiceUI *service,
GDBusMethodInvocation *invocation,
const gchar *uri)
{
gboolean success;
success = pika_dbus_service_queue_open (PIKA_DBUS_SERVICE (service),
uri, TRUE);
pika_dbus_service_ui_complete_open_as_new (service, invocation, success);
return TRUE;
}
gboolean
pika_dbus_service_batch_run (PikaDBusServiceUI *service,
GDBusMethodInvocation *invocation,
const gchar *batch_interpreter,
const gchar *batch_command)
{
gboolean success;
success = pika_dbus_service_queue_batch (PIKA_DBUS_SERVICE (service),
batch_interpreter,
batch_command);
pika_dbus_service_ui_complete_batch_run (service, invocation, success);
return TRUE;
}
static void
pika_dbus_service_pika_opened (Pika *pika,
GFile *file,
PikaDBusService *service)
{
gchar *uri = g_file_get_uri (file);
g_signal_emit_by_name (service, "opened", uri);
g_free (uri);
}
/*
* Adds a request to open a file to the end of the queue and
* starts an idle source if it is not already running.
*/
static gboolean
pika_dbus_service_queue_open (PikaDBusService *service,
const gchar *uri,
gboolean as_new)
{
g_queue_push_tail (service->queue,
pika_dbus_service_open_data_new (service, uri, as_new));
if (! service->source)
{
service->source = g_idle_source_new ();
service->timeout_source = FALSE;
g_source_set_priority (service->source, G_PRIORITY_LOW);
g_source_set_callback (service->source,
(GSourceFunc) pika_dbus_service_process_idle,
service,
NULL);
g_source_attach (service->source, NULL);
g_source_unref (service->source);
}
/* The call always succeeds as it is handled in one way or another.
* Even presenting an error message is considered success ;-)
*/
return TRUE;
}
/*
* Adds a request to run a batch command to the end of the queue and
* starts an idle source if it is not already running.
*/
static gboolean
pika_dbus_service_queue_batch (PikaDBusService *service,
const gchar *interpreter,
const gchar *command)
{
g_queue_push_tail (service->queue,
pika_dbus_service_batch_data_new (service,
interpreter,
command));
if (! service->source)
{
service->source = g_idle_source_new ();
service->timeout_source = FALSE;
g_source_set_priority (service->source, G_PRIORITY_LOW);
g_source_set_callback (service->source,
(GSourceFunc) pika_dbus_service_process_idle,
service,
NULL);
g_source_attach (service->source, NULL);
g_source_unref (service->source);
}
/* The call always succeeds as it is handled in one way or another.
* Even presenting an error message is considered success ;-)
*/
return TRUE;
}
/*
* Idle callback that removes the first request from the queue and
* handles it. If there are no more requests, the idle source is
* removed.
*/
static gboolean
pika_dbus_service_process_idle (PikaDBusService *service)
{
IdleData *data;
if (! pika_is_restored (service->pika))
{
if (! service->timeout_source)
{
/* We are probably starting the program. No need to spam PIKA with
* an idle handler (which might make PIKA slower to start even
* with low priority).
* Instead let's add a timeout of half a second.
*/
service->source = g_timeout_source_new (500);
service->timeout_source = TRUE;
g_source_set_priority (service->source, G_PRIORITY_LOW);
g_source_set_callback (service->source,
(GSourceFunc) pika_dbus_service_process_idle,
service,
NULL);
g_source_attach (service->source, NULL);
g_source_unref (service->source);
return G_SOURCE_REMOVE;
}
else
{
return G_SOURCE_CONTINUE;
}
}
/* Process data as a FIFO. */
data = g_queue_pop_head (service->queue);
if (data)
{
if (data->file)
file_open_from_command_line (service->pika, data->file, data->as_new,
NULL /* FIXME monitor */);
if (data->command)
{
const gchar *commands[2] = {data->command, 0};
pika_batch_run (service->pika, data->interpreter,
commands);
}
pika_dbus_service_idle_data_free (data);
if (service->timeout_source)
{
/* Now PIKA is fully functional and can respond quickly to
* DBus calls. Switch to a usual idle source.
*/
service->source = g_idle_source_new ();
service->timeout_source = FALSE;
g_source_set_priority (service->source, G_PRIORITY_LOW);
g_source_set_callback (service->source,
(GSourceFunc) pika_dbus_service_process_idle,
service,
NULL);
g_source_attach (service->source, NULL);
g_source_unref (service->source);
return G_SOURCE_REMOVE;
}
else
{
return G_SOURCE_CONTINUE;
}
}
service->source = NULL;
return G_SOURCE_REMOVE;
}
static IdleData *
pika_dbus_service_open_data_new (PikaDBusService *service,
const gchar *uri,
gboolean as_new)
{
IdleData *data = g_slice_new (IdleData);
data->file = g_file_new_for_uri (uri);
data->as_new = as_new;
data->interpreter = NULL;
data->command = NULL;
return data;
}
static IdleData *
pika_dbus_service_batch_data_new (PikaDBusService *service,
const gchar *interpreter,
const gchar *command)
{
IdleData *data = g_slice_new (IdleData);
data->file = NULL;
data->as_new = FALSE;
data->command = g_strdup (command);
if (g_strcmp0 (interpreter, "") == 0)
data->interpreter = NULL;
else
data->interpreter = g_strdup (interpreter);
return data;
}
static void
pika_dbus_service_idle_data_free (IdleData *data)
{
if (data->file)
g_object_unref (data->file);
if (data->command)
g_free (data->command);
if (data->interpreter)
g_free (data->interpreter);
g_slice_free (IdleData, data);
}