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-rw-r--r--libgimpwidgets/gimpcontroller.c263
1 files changed, 263 insertions, 0 deletions
diff --git a/libgimpwidgets/gimpcontroller.c b/libgimpwidgets/gimpcontroller.c
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+/* LIBGIMP - The GIMP Library
+ * Copyright (C) 1995-1997 Peter Mattis and Spencer Kimball
+ *
+ * gimpcontroller.c
+ * Copyright (C) 2004 Michael Natterer <mitch@gimp.org>
+ *
+ * This library is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see
+ * <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <gegl.h>
+#include <gtk/gtk.h>
+
+#include "libgimpcolor/gimpcolor.h"
+#include "libgimpconfig/gimpconfig.h"
+
+#include "gimpwidgetstypes.h"
+
+#include "gimpwidgetsmarshal.h"
+
+#define GIMP_ENABLE_CONTROLLER_UNDER_CONSTRUCTION
+#include "gimpcontroller.h"
+#include "gimpicons.h"
+
+
+/**
+ * SECTION: gimpcontroller
+ * @title: GimpController
+ * @short_description: Pluggable GIMP input controller modules.
+ *
+ * An abstract interface for implementing arbitrary input controllers.
+ **/
+
+
+enum
+{
+ PROP_0,
+ PROP_NAME,
+ PROP_STATE
+};
+
+enum
+{
+ EVENT,
+ LAST_SIGNAL
+};
+
+
+static void gimp_controller_finalize (GObject *object);
+static void gimp_controller_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec);
+static void gimp_controller_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec);
+
+
+G_DEFINE_TYPE_WITH_CODE (GimpController, gimp_controller, G_TYPE_OBJECT,
+ G_IMPLEMENT_INTERFACE (GIMP_TYPE_CONFIG, NULL))
+
+#define parent_class gimp_controller_parent_class
+
+static guint controller_signals[LAST_SIGNAL] = { 0 };
+
+
+static void
+gimp_controller_class_init (GimpControllerClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+ object_class->finalize = gimp_controller_finalize;
+ object_class->set_property = gimp_controller_set_property;
+ object_class->get_property = gimp_controller_get_property;
+
+ klass->name = "Unnamed";
+ klass->help_domain = NULL;
+ klass->help_id = NULL;
+ klass->icon_name = GIMP_ICON_CONTROLLER;
+
+ klass->get_n_events = NULL;
+ klass->get_event_name = NULL;
+ klass->event = NULL;
+
+ g_object_class_install_property (object_class, PROP_NAME,
+ g_param_spec_string ("name",
+ "Name",
+ "The controller's name",
+ "Unnamed Controller",
+ GIMP_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT));
+
+ g_object_class_install_property (object_class, PROP_STATE,
+ g_param_spec_string ("state",
+ "State",
+ "The controller's state, as human-readable string",
+ "Unknown",
+ GIMP_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT));
+
+ controller_signals[EVENT] =
+ g_signal_new ("event",
+ G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GimpControllerClass, event),
+ g_signal_accumulator_true_handled, NULL,
+ _gimp_widgets_marshal_BOOLEAN__POINTER,
+ G_TYPE_BOOLEAN, 1,
+ G_TYPE_POINTER);
+}
+
+static void
+gimp_controller_init (GimpController *controller)
+{
+}
+
+static void
+gimp_controller_finalize (GObject *object)
+{
+ GimpController *controller = GIMP_CONTROLLER (object);
+
+ g_clear_pointer (&controller->name, g_free);
+ g_clear_pointer (&controller->state, g_free);
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+gimp_controller_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ GimpController *controller = GIMP_CONTROLLER (object);
+
+ switch (property_id)
+ {
+ case PROP_NAME:
+ if (controller->name)
+ g_free (controller->name);
+ controller->name = g_value_dup_string (value);
+ break;
+ case PROP_STATE:
+ if (controller->state)
+ g_free (controller->state);
+ controller->state = g_value_dup_string (value);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+gimp_controller_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ GimpController *controller = GIMP_CONTROLLER (object);
+
+ switch (property_id)
+ {
+ case PROP_NAME:
+ g_value_set_string (value, controller->name);
+ break;
+ case PROP_STATE:
+ g_value_set_string (value, controller->state);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+GimpController *
+gimp_controller_new (GType controller_type)
+{
+ GimpController *controller;
+
+ g_return_val_if_fail (g_type_is_a (controller_type, GIMP_TYPE_CONTROLLER),
+ NULL);
+
+ controller = g_object_new (controller_type, NULL);
+
+ return controller;
+}
+
+gint
+gimp_controller_get_n_events (GimpController *controller)
+{
+ g_return_val_if_fail (GIMP_IS_CONTROLLER (controller), 0);
+
+ if (GIMP_CONTROLLER_GET_CLASS (controller)->get_n_events)
+ return GIMP_CONTROLLER_GET_CLASS (controller)->get_n_events (controller);
+
+ return 0;
+}
+
+const gchar *
+gimp_controller_get_event_name (GimpController *controller,
+ gint event_id)
+{
+ const gchar *name = NULL;
+
+ g_return_val_if_fail (GIMP_IS_CONTROLLER (controller), NULL);
+
+ if (GIMP_CONTROLLER_GET_CLASS (controller)->get_event_name)
+ name = GIMP_CONTROLLER_GET_CLASS (controller)->get_event_name (controller,
+ event_id);
+
+ if (! name)
+ name = "<invalid event id>";
+
+ return name;
+}
+
+const gchar *
+gimp_controller_get_event_blurb (GimpController *controller,
+ gint event_id)
+{
+ const gchar *blurb = NULL;
+
+ g_return_val_if_fail (GIMP_IS_CONTROLLER (controller), NULL);
+
+ if (GIMP_CONTROLLER_GET_CLASS (controller)->get_event_blurb)
+ blurb = GIMP_CONTROLLER_GET_CLASS (controller)->get_event_blurb (controller,
+ event_id);
+
+ if (! blurb)
+ blurb = "<invalid event id>";
+
+ return blurb;
+}
+
+gboolean
+gimp_controller_event (GimpController *controller,
+ const GimpControllerEvent *event)
+{
+ gboolean retval = FALSE;
+
+ g_return_val_if_fail (GIMP_IS_CONTROLLER (controller), FALSE);
+ g_return_val_if_fail (event != NULL, FALSE);
+
+ g_signal_emit (controller, controller_signals[EVENT], 0,
+ event, &retval);
+
+ return retval;
+}