PIKApp/libpika/pikadisplay.c

190 lines
4.6 KiB
C

/* LIBPIKA - The PIKA Library
* Copyright (C) 1995-2000 Peter Mattis and Spencer Kimball
*
* pikadisplay.c
* Copyright (C) Jehan
*
* 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 "pika.h"
#include "libpikabase/pikawire.h" /* FIXME kill this include */
#include "pikaplugin-private.h"
#include "pikaprocedure-private.h"
enum
{
PROP_0,
PROP_ID,
N_PROPS
};
struct _PikaDisplayPrivate
{
gint id;
};
static void pika_display_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void pika_display_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
G_DEFINE_TYPE_WITH_PRIVATE (PikaDisplay, pika_display, G_TYPE_OBJECT)
#define parent_class pika_display_parent_class
static GParamSpec *props[N_PROPS] = { NULL, };
static void
pika_display_class_init (PikaDisplayClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->set_property = pika_display_set_property;
object_class->get_property = pika_display_get_property;
props[PROP_ID] =
g_param_spec_int ("id",
"The display id",
"The display id for internal use",
0, G_MAXINT32, 0,
PIKA_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY);
g_object_class_install_properties (object_class, N_PROPS, props);
}
static void
pika_display_init (PikaDisplay *display)
{
display->priv = pika_display_get_instance_private (display);
}
static void
pika_display_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
PikaDisplay *display = PIKA_DISPLAY (object);
switch (property_id)
{
case PROP_ID:
display->priv->id = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
pika_display_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
PikaDisplay *display = PIKA_DISPLAY (object);
switch (property_id)
{
case PROP_ID:
g_value_set_int (value, display->priv->id);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
/* Public API */
/**
* pika_display_get_id:
* @display: The display.
*
* Returns: the display ID.
*
* Since: 3.0
**/
gint32
pika_display_get_id (PikaDisplay *display)
{
return display ? display->priv->id : -1;
}
/**
* pika_display_get_by_id:
* @display_id: The display id.
*
* Returns a #PikaDisplay representing @display_id.
*
* Returns: (nullable) (transfer none): a #PikaDisplay for @display_id or
* %NULL if @display_id does not represent a valid display.
* The object belongs to libpika and you must not modify or
* unref it.
*
* Since: 3.0
**/
PikaDisplay *
pika_display_get_by_id (gint32 display_id)
{
if (display_id > 0)
{
PikaPlugIn *plug_in = pika_get_plug_in ();
PikaProcedure *procedure = _pika_plug_in_get_procedure (plug_in);
return _pika_procedure_get_display (procedure, display_id);
}
return NULL;
}
/**
* pika_display_is_valid:
* @display: The display to check.
*
* Returns TRUE if the display is valid.
*
* This procedure checks if the given display is valid and refers to
* an existing display.
*
* Returns: Whether the display is valid.
*
* Since: 2.4
**/
gboolean
pika_display_is_valid (PikaDisplay *display)
{
return pika_display_id_is_valid (pika_display_get_id (display));
}