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gimp/app/widgets/gimpdevices.c

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/* GIMP - The GNU Image Manipulation Program
* 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 2 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "config.h"
#include <errno.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <glib/gstdio.h>
#include <gtk/gtk.h>
#include "libgimpcolor/gimpcolor.h"
#include "libgimpconfig/gimpconfig.h"
#include "libgimpbase/gimpbase.h"
#ifdef G_OS_WIN32
#include "libgimpbase/gimpwin32-io.h"
#endif
#include "widgets-types.h"
#include "core/gimp.h"
#include "core/gimpdatafactory.h"
#include "core/gimpgradient.h"
#include "core/gimplist.h"
#include "core/gimppattern.h"
#include "core/gimptoolinfo.h"
#include "gimpdeviceinfo.h"
#include "gimpdevices.h"
#include "gimp-intl.h"
#define GIMP_DEVICE_MANAGER_DATA_KEY "gimp-device-manager"
typedef struct _GimpDeviceManager GimpDeviceManager;
struct _GimpDeviceManager
{
Gimp *gimp;
GimpContainer *device_info_list;
GdkDevice *current_device;
GimpDeviceChangeNotify change_notify;
gboolean devicerc_deleted;
};
/* local function prototypes */
static GimpDeviceManager * gimp_device_manager_get (Gimp *gimp);
static void gimp_device_manager_free (GimpDeviceManager *manager);
static void gimp_devices_display_opened (GdkDisplayManager *disp_manager,
GdkDisplay *display,
GimpDeviceManager *manager);
static void gimp_devices_display_closed (GdkDisplay *display,
gboolean is_error,
GimpDeviceManager *manager);
/* public functions */
void
gimp_devices_init (Gimp *gimp,
GimpDeviceChangeNotify change_notify)
{
GdkDisplayManager *disp_manager = gdk_display_manager_get ();
GimpDeviceManager *manager;
GSList *displays;
GSList *list;
GdkDisplay *gdk_display;
g_return_if_fail (GIMP_IS_GIMP (gimp));
g_return_if_fail (gimp_device_manager_get (gimp) == NULL);
manager = g_new0 (GimpDeviceManager, 1);
g_object_set_data_full (G_OBJECT (gimp),
GIMP_DEVICE_MANAGER_DATA_KEY, manager,
(GDestroyNotify) gimp_device_manager_free);
gdk_display = gdk_display_get_default ();
manager->gimp = gimp;
manager->device_info_list = gimp_list_new (GIMP_TYPE_DEVICE_INFO, FALSE);
manager->current_device = gdk_display_get_core_pointer (gdk_display);
manager->change_notify = change_notify;
displays = gdk_display_manager_list_displays (disp_manager);
/* present displays in the order in which they were opened */
displays = g_slist_reverse (displays);
for (list = displays; list; list = g_slist_next (list))
{
gimp_devices_display_opened (disp_manager, list->data, manager);
}
g_slist_free (displays);
g_signal_connect (disp_manager, "display-opened",
G_CALLBACK (gimp_devices_display_opened),
manager);
}
void
gimp_devices_exit (Gimp *gimp)
{
GimpDeviceManager *manager;
g_return_if_fail (GIMP_IS_GIMP (gimp));
manager = gimp_device_manager_get (gimp);
g_return_if_fail (manager != NULL);
g_signal_handlers_disconnect_by_func (gdk_display_manager_get (),
gimp_devices_display_opened,
manager);
g_object_set_data (G_OBJECT (gimp), GIMP_DEVICE_MANAGER_DATA_KEY, NULL);
}
void
gimp_devices_restore (Gimp *gimp)
{
GimpDeviceManager *manager;
GimpDeviceInfo *device_info;
GimpContext *user_context;
GList *list;
gchar *filename;
GError *error = NULL;
g_return_if_fail (GIMP_IS_GIMP (gimp));
manager = gimp_device_manager_get (gimp);
g_return_if_fail (manager != NULL);
user_context = gimp_get_user_context (gimp);
for (list = GIMP_LIST (manager->device_info_list)->list;
list;
list = g_list_next (list))
{
GimpDeviceInfo *device_info = list->data;
gimp_context_copy_properties (user_context, GIMP_CONTEXT (device_info),
GIMP_DEVICE_INFO_CONTEXT_MASK);
}
filename = gimp_personal_rc_file ("devicerc");
if (gimp->be_verbose)
g_print ("Parsing '%s'\n", gimp_filename_to_utf8 (filename));
if (! gimp_config_deserialize_file (GIMP_CONFIG (manager->device_info_list),
filename,
gimp,
&error))
{
if (error->code != GIMP_CONFIG_ERROR_OPEN_ENOENT)
gimp_message (gimp, NULL, GIMP_MESSAGE_ERROR, "%s", error->message);
g_error_free (error);
/* don't bail out here */
}
g_free (filename);
gimp_list_reverse (GIMP_LIST (manager->device_info_list));
device_info = gimp_device_info_get_by_device (manager->current_device);
g_return_if_fail (GIMP_IS_DEVICE_INFO (device_info));
gimp_context_copy_properties (GIMP_CONTEXT (device_info), user_context,
GIMP_DEVICE_INFO_CONTEXT_MASK);
gimp_context_set_parent (GIMP_CONTEXT (device_info), user_context);
}
void
gimp_devices_save (Gimp *gimp,
gboolean always_save)
{
GimpDeviceManager *manager;
gchar *filename;
GError *error = NULL;
g_return_if_fail (GIMP_IS_GIMP (gimp));
manager = gimp_device_manager_get (gimp);
g_return_if_fail (manager != NULL);
if (manager->devicerc_deleted && ! always_save)
return;
filename = gimp_personal_rc_file ("devicerc");
if (gimp->be_verbose)
g_print ("Writing '%s'\n", gimp_filename_to_utf8 (filename));
if (! gimp_config_serialize_to_file (GIMP_CONFIG (manager->device_info_list),
filename,
"GIMP devicerc",
"end of devicerc",
NULL,
&error))
{
gimp_message (gimp, NULL, GIMP_MESSAGE_ERROR, "%s", error->message);
g_error_free (error);
}
g_free (filename);
manager->devicerc_deleted = FALSE;
}
gboolean
gimp_devices_clear (Gimp *gimp,
GError **error)
{
GimpDeviceManager *manager;
gchar *filename;
gboolean success = TRUE;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), FALSE);
manager = gimp_device_manager_get (gimp);
g_return_val_if_fail (manager != NULL, FALSE);
filename = gimp_personal_rc_file ("devicerc");
if (g_unlink (filename) != 0 && errno != ENOENT)
{
g_set_error (error, 0, 0, _("Deleting \"%s\" failed: %s"),
gimp_filename_to_utf8 (filename), g_strerror (errno));
success = FALSE;
}
else
{
manager->devicerc_deleted = TRUE;
}
g_free (filename);
return success;
}
GimpContainer *
gimp_devices_get_list (Gimp *gimp)
{
GimpDeviceManager *manager;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
manager = gimp_device_manager_get (gimp);
g_return_val_if_fail (manager != NULL, NULL);
return manager->device_info_list;
}
GdkDevice *
gimp_devices_get_current (Gimp *gimp)
{
GimpDeviceManager *manager;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
manager = gimp_device_manager_get (gimp);
g_return_val_if_fail (manager != NULL, NULL);
return manager->current_device;
}
void
gimp_devices_select_device (Gimp *gimp,
GdkDevice *new_device)
{
GimpDeviceManager *manager;
GimpDeviceInfo *current_device_info;
GimpDeviceInfo *new_device_info;
GimpContext *user_context;
g_return_if_fail (GIMP_IS_GIMP (gimp));
g_return_if_fail (GDK_IS_DEVICE (new_device));
manager = gimp_device_manager_get (gimp);
g_return_if_fail (manager != NULL);
current_device_info = gimp_device_info_get_by_device (manager->current_device);
new_device_info = gimp_device_info_get_by_device (new_device);
g_return_if_fail (GIMP_IS_DEVICE_INFO (current_device_info));
g_return_if_fail (GIMP_IS_DEVICE_INFO (new_device_info));
gimp_context_set_parent (GIMP_CONTEXT (current_device_info), NULL);
manager->current_device = new_device;
user_context = gimp_get_user_context (gimp);
gimp_context_copy_properties (GIMP_CONTEXT (new_device_info), user_context,
GIMP_DEVICE_INFO_CONTEXT_MASK);
gimp_context_set_parent (GIMP_CONTEXT (new_device_info), user_context);
if (manager->change_notify)
manager->change_notify (gimp);
}
gboolean
gimp_devices_check_change (Gimp *gimp,
GdkEvent *event)
{
GimpDeviceManager *manager;
GdkDevice *device;
GtkWidget *source;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
manager = gimp_device_manager_get (gimp);
g_return_val_if_fail (manager != NULL, FALSE);
/* It is possible that the event was propagated from a widget that does not
want extension events and therefore always sends core pointer events.
This can cause a false switch to the core pointer device. */
source = gtk_get_event_widget (event);
if (source &&
gtk_widget_get_extension_events (source) == GDK_EXTENSION_EVENTS_NONE)
return FALSE;
switch (event->type)
{
case GDK_MOTION_NOTIFY:
device = ((GdkEventMotion *) event)->device;
break;
case GDK_BUTTON_PRESS:
case GDK_2BUTTON_PRESS:
case GDK_3BUTTON_PRESS:
case GDK_BUTTON_RELEASE:
device = ((GdkEventButton *) event)->device;
break;
case GDK_PROXIMITY_IN:
case GDK_PROXIMITY_OUT:
device = ((GdkEventProximity *) event)->device;
break;
case GDK_SCROLL:
device = ((GdkEventScroll *) event)->device;
break;
default:
device = manager->current_device;
break;
}
if (device != manager->current_device)
{
gimp_devices_select_device (gimp, device);
return TRUE;
}
return FALSE;
}
/* private functions */
static GimpDeviceManager *
gimp_device_manager_get (Gimp *gimp)
{
return g_object_get_data (G_OBJECT (gimp), GIMP_DEVICE_MANAGER_DATA_KEY);
}
static void
gimp_device_manager_free (GimpDeviceManager *manager)
{
if (manager->device_info_list)
g_object_unref (manager->device_info_list);
g_free (manager);
}
static void
gimp_devices_display_opened (GdkDisplayManager *disp_manager,
GdkDisplay *gdk_display,
GimpDeviceManager *manager)
{
GList *list;
/* create device info structures for present devices */
for (list = gdk_display_list_devices (gdk_display); list; list = list->next)
{
GdkDevice *device = list->data;
GimpDeviceInfo *device_info;
device_info = gimp_device_info_new (manager->gimp, device->name);
gimp_device_info_set_from_device (device_info, device, gdk_display);
gimp_container_add (manager->device_info_list, GIMP_OBJECT (device_info));
g_object_unref (device_info);
}
g_signal_connect (gdk_display, "closed",
G_CALLBACK (gimp_devices_display_closed),
manager);
}
static void
gimp_devices_display_closed (GdkDisplay *gdk_display,
gboolean is_error,
GimpDeviceManager *manager)
{
}
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