PIKApp/app/widgets/pikadevices.c

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2023-09-26 00:35:21 +02:00
/* 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
*
* 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 "libpikacolor/pikacolor.h"
#include "libpikaconfig/pikaconfig.h"
#include "libpikabase/pikabase.h"
#include "widgets-types.h"
#include "config/pikaguiconfig.h"
#include "core/pika.h"
#include "core/pikacontext.h"
#include "core/pikadatafactory.h"
#include "core/pikaerror.h"
#include "core/pikagradient.h"
#include "core/pikalist.h"
#include "core/pikapattern.h"
#include "core/pikatoolinfo.h"
#include "pikadeviceinfo.h"
#include "pikadevicemanager.h"
#include "pikadevices.h"
#include "pika-intl.h"
#define PIKA_DEVICE_MANAGER_DATA_KEY "pika-device-manager"
static gboolean devicerc_deleted = FALSE;
/* public functions */
void
pika_devices_init (Pika *pika)
{
PikaDeviceManager *manager;
g_return_if_fail (PIKA_IS_PIKA (pika));
manager = g_object_get_data (G_OBJECT (pika), PIKA_DEVICE_MANAGER_DATA_KEY);
g_return_if_fail (manager == NULL);
manager = pika_device_manager_new (pika);
g_object_set_data_full (G_OBJECT (pika),
PIKA_DEVICE_MANAGER_DATA_KEY, manager,
(GDestroyNotify) g_object_unref);
}
void
pika_devices_exit (Pika *pika)
{
PikaDeviceManager *manager;
g_return_if_fail (PIKA_IS_PIKA (pika));
manager = pika_devices_get_manager (pika);
g_return_if_fail (PIKA_IS_DEVICE_MANAGER (manager));
g_object_set_data (G_OBJECT (pika), PIKA_DEVICE_MANAGER_DATA_KEY, NULL);
}
void
pika_devices_restore (Pika *pika)
{
PikaDeviceManager *manager;
GList *list;
GFile *file;
GError *error = NULL;
g_return_if_fail (PIKA_IS_PIKA (pika));
manager = pika_devices_get_manager (pika);
g_return_if_fail (PIKA_IS_DEVICE_MANAGER (manager));
for (list = PIKA_LIST (manager)->queue->head;
list;
list = g_list_next (list))
{
PikaDeviceInfo *device_info = list->data;
pika_device_info_save_tool (device_info);
pika_device_info_set_default_tool (device_info);
}
file = pika_directory_file ("devicerc", NULL);
if (pika->be_verbose)
g_print ("Parsing '%s'\n", pika_file_get_utf8_name (file));
if (! pika_config_deserialize_file (PIKA_CONFIG (manager),
file,
pika,
&error))
{
if (error->code != PIKA_CONFIG_ERROR_OPEN_ENOENT)
pika_message_literal (pika, NULL, PIKA_MESSAGE_ERROR, error->message);
g_error_free (error);
/* don't bail out here */
}
g_object_unref (file);
for (list = PIKA_LIST (manager)->queue->head;
list;
list = g_list_next (list))
{
PikaDeviceInfo *device_info = list->data;
if (! PIKA_TOOL_PRESET (device_info)->tool_options)
{
pika_device_info_save_tool (device_info);
g_printerr ("%s: set default tool on loaded PikaDeviceInfo without tool options: %s\n",
G_STRFUNC, pika_object_get_name (device_info));
}
}
if (! PIKA_GUI_CONFIG (pika->config)->devices_share_tool)
{
PikaDeviceInfo *current_device;
current_device = pika_device_manager_get_current_device (manager);
pika_device_info_restore_tool (current_device);
}
}
void
pika_devices_save (Pika *pika,
gboolean always_save)
{
PikaDeviceManager *manager;
GFile *file;
GError *error = NULL;
g_return_if_fail (PIKA_IS_PIKA (pika));
manager = pika_devices_get_manager (pika);
g_return_if_fail (PIKA_IS_DEVICE_MANAGER (manager));
if (devicerc_deleted && ! always_save)
return;
file = pika_directory_file ("devicerc", NULL);
if (pika->be_verbose)
g_print ("Writing '%s'\n", pika_file_get_utf8_name (file));
if (! PIKA_GUI_CONFIG (pika->config)->devices_share_tool)
{
PikaDeviceInfo *current_device;
current_device = pika_device_manager_get_current_device (manager);
pika_device_info_save_tool (current_device);
}
if (! pika_config_serialize_to_file (PIKA_CONFIG (manager),
file,
"PIKA devicerc",
"end of devicerc",
NULL,
&error))
{
pika_message_literal (pika, NULL, PIKA_MESSAGE_ERROR, error->message);
g_error_free (error);
}
g_object_unref (file);
devicerc_deleted = FALSE;
}
gboolean
pika_devices_clear (Pika *pika,
GError **error)
{
PikaDeviceManager *manager;
GFile *file;
GError *my_error = NULL;
gboolean success = TRUE;
g_return_val_if_fail (PIKA_IS_PIKA (pika), FALSE);
manager = pika_devices_get_manager (pika);
g_return_val_if_fail (PIKA_IS_DEVICE_MANAGER (manager), FALSE);
file = pika_directory_file ("devicerc", NULL);
if (! g_file_delete (file, NULL, &my_error) &&
my_error->code != G_IO_ERROR_NOT_FOUND)
{
success = FALSE;
g_set_error (error, PIKA_ERROR, PIKA_FAILED,
_("Deleting \"%s\" failed: %s"),
pika_file_get_utf8_name (file), my_error->message);
}
else
{
devicerc_deleted = TRUE;
}
g_clear_error (&my_error);
g_object_unref (file);
return success;
}
PikaDeviceManager *
pika_devices_get_manager (Pika *pika)
{
PikaDeviceManager *manager;
g_return_val_if_fail (PIKA_IS_PIKA (pika), NULL);
manager = g_object_get_data (G_OBJECT (pika), PIKA_DEVICE_MANAGER_DATA_KEY);
g_return_val_if_fail (PIKA_IS_DEVICE_MANAGER (manager), NULL);
return manager;
}
GdkDevice *
pika_devices_get_from_event (Pika *pika,
const GdkEvent *event,
GdkDevice **grab_device)
{
GdkDevice *device;
g_return_val_if_fail (PIKA_IS_PIKA (pika), NULL);
g_return_val_if_fail (event != NULL, NULL);
device = gdk_event_get_source_device (event);
/* initialize the default grab device to the event's device,
* because that is always either a master or a floating device,
* which is the types of devices we can make grabs on without
* disturbing side effects.
*/
if (grab_device)
*grab_device = gdk_event_get_device (event);
if (gdk_device_get_source (device) == GDK_SOURCE_KEYBOARD)
{
switch (gdk_device_get_device_type (device))
{
case GDK_DEVICE_TYPE_MASTER:
/* this happens on focus synthesized focus changed events,
* and we can't do anything with the returned device, so
* return NULL
*/
return NULL;
case GDK_DEVICE_TYPE_SLAVE:
/* it makes no sense for us to distinguigh between
* different slave keyboards, so just always return
* their respective master
*/
return gdk_device_get_associated_device (device);
case GDK_DEVICE_TYPE_FLOATING:
/* we have no way of explicitly enabling floating
* keyboards, so we cannot get their events
*/
g_return_val_if_reached (device);
}
}
else
{
switch (gdk_device_get_device_type (device))
{
case GDK_DEVICE_TYPE_MASTER:
/* this can only happen for synthesized events which have
* no actual source, so return NULL to indicate that we
* cannot do anything with the event's device information
*/
return NULL;
case GDK_DEVICE_TYPE_SLAVE:
/* this is the tricky part: we do want to distingiugh slave
* devices, but only if we actually enabled them ourselves
* explicitly (like the pens of a tablet); however we
* usually don't enable the different incarnations of the
* mouse itself (like touchpad, trackpoint, usb mouse
* etc.), so for these return their respective master so
* its settings are used
*/
if (gdk_device_get_mode (device) == GDK_MODE_DISABLED)
{
return gdk_device_get_associated_device (device);
}
return device;
case GDK_DEVICE_TYPE_FLOATING:
/* we only get events for floating devices which have
* enabled ourselves, so return the floating device
*/
return device;
}
}
g_return_val_if_reached (device);
}
void
pika_devices_add_widget (Pika *pika,
GtkWidget *widget)
{
g_return_if_fail (PIKA_IS_PIKA (pika));
g_return_if_fail (GTK_IS_WIDGET (widget));
g_signal_connect (widget, "motion-notify-event",
G_CALLBACK (pika_devices_check_callback),
pika);
}
gboolean
pika_devices_check_callback (GtkWidget *widget,
GdkEvent *event,
Pika *pika)
{
g_return_val_if_fail (event != NULL, FALSE);
g_return_val_if_fail (PIKA_IS_PIKA (pika), FALSE);
if (! pika->busy)
{
GdkDevice *device;
device = pika_devices_get_from_event (pika, event, NULL);
if (device)
pika_devices_check_change (pika, device);
}
return FALSE;
}
gboolean
pika_devices_check_change (Pika *pika,
GdkDevice *device)
{
PikaDeviceManager *manager;
PikaDeviceInfo *device_info;
g_return_val_if_fail (PIKA_IS_PIKA (pika), FALSE);
g_return_val_if_fail (GDK_IS_DEVICE (device), FALSE);
manager = pika_devices_get_manager (pika);
g_return_val_if_fail (PIKA_IS_DEVICE_MANAGER (manager), FALSE);
device_info = pika_device_info_get_by_device (device);
if (! device_info)
device_info = pika_device_manager_get_current_device (manager);
if (device_info &&
device_info != pika_device_manager_get_current_device (manager))
{
pika_device_manager_set_current_device (manager, device_info);
return TRUE;
}
return FALSE;
}