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|
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* libnautilus: A library for nautilus view implementations.
*
* Copyright (C) 2000 Eazel, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Author: Maciej Stachowiak <mjs@eazel.com>
*
*/
/* nautilus-zoomable.c */
#include <config.h>
#include "nautilus-zoomable.h"
#include <libnautilus-extensions/nautilus-gtk-macros.h>
#include <gtk/gtksignal.h>
#include <bonobo/bonobo-main.h>
#include <bonobo/bonobo-control.h>
NautilusZoomable *foo;
struct NautilusZoomableDetails {
BonoboControl *control;
double zoom_level;
double min_zoom_level;
double max_zoom_level;
gboolean is_continuous;
Nautilus_ZoomLevel *preferred_zoom_levels;
int num_preferred_zoom_levels;
Nautilus_ZoomableFrame zoomable_frame;
};
enum {
SET_ZOOM_LEVEL,
ZOOM_IN,
ZOOM_OUT,
ZOOM_TO_FIT,
LAST_SIGNAL
};
enum {
ARG_0,
ARG_BONOBO_CONTROL,
ARG_MIN_ZOOM_LEVEL,
ARG_MAX_ZOOM_LEVEL,
ARG_IS_CONTINUOUS,
ARG_PREFERRED_ZOOM_LEVELS,
ARG_NUM_PREFERRED_ZOOM_LEVELS,
};
static guint signals[LAST_SIGNAL];
typedef struct {
POA_Nautilus_Zoomable servant;
gpointer bonobo_object;
NautilusZoomable *gtk_object;
} impl_POA_Nautilus_Zoomable;
void nautilus_zoomable_real_set_bonobo_control (NautilusZoomable *view,
BonoboControl *bonobo_control);
static CORBA_float impl_Nautilus_Zoomable__get_zoom_level (PortableServer_Servant servant,
CORBA_Environment *ev);
static void impl_Nautilus_Zoomable__set_zoom_level (PortableServer_Servant servant,
const CORBA_float zoom_level,
CORBA_Environment *ev);
static CORBA_float impl_Nautilus_Zoomable__get_min_zoom_level (PortableServer_Servant servant,
CORBA_Environment *ev);
static CORBA_float impl_Nautilus_Zoomable__get_max_zoom_level (PortableServer_Servant servant,
CORBA_Environment *ev);
static CORBA_boolean impl_Nautilus_Zoomable__get_is_continuous (PortableServer_Servant servant,
CORBA_Environment *ev);
static Nautilus_ZoomLevelList* impl_Nautilus_Zoomable__get_preferred_zoom_level_list
(PortableServer_Servant servant,
CORBA_Environment *ev);
static void impl_Nautilus_Zoomable_zoom_in (PortableServer_Servant servant,
CORBA_Environment *ev);
static void impl_Nautilus_Zoomable_zoom_out (PortableServer_Servant servant,
CORBA_Environment *ev);
static void impl_Nautilus_Zoomable_zoom_to_fit (PortableServer_Servant servant,
CORBA_Environment *ev);
POA_Nautilus_Zoomable__epv libnautilus_Nautilus_Zoomable_epv =
{
NULL, /* _private */
&impl_Nautilus_Zoomable__get_zoom_level,
&impl_Nautilus_Zoomable__set_zoom_level,
&impl_Nautilus_Zoomable__get_min_zoom_level,
&impl_Nautilus_Zoomable__get_max_zoom_level,
&impl_Nautilus_Zoomable__get_is_continuous,
&impl_Nautilus_Zoomable__get_preferred_zoom_level_list,
&impl_Nautilus_Zoomable_zoom_in,
&impl_Nautilus_Zoomable_zoom_out,
&impl_Nautilus_Zoomable_zoom_to_fit
};
/* static PortableServer_ServantBase__epv base_epv; */
static POA_Nautilus_Zoomable__vepv impl_Nautilus_Zoomable_vepv =
{
/* &base_epv, */
NULL,
NULL,
&libnautilus_Nautilus_Zoomable_epv
};
GList *
nautilus_g_list_from_ZoomLevelList (const Nautilus_ZoomLevelList *zoom_level_list)
{
GList *list;
int i;
double *zoom_level_ptr;
list = NULL;
for (i = 0; i < zoom_level_list->_length; ++i) {
zoom_level_ptr = g_new (double, 1);
*zoom_level_ptr = zoom_level_list->_buffer[i];
list = g_list_prepend (list, zoom_level_ptr);
}
return g_list_reverse (list);
}
static Nautilus_ZoomLevel *
nautilus_ZoomLevelListBuffer_from_zoom_levels (const double *zoom_levels, int num_levels)
{
int i;
Nautilus_ZoomLevel *buffer;
buffer = CORBA_sequence_Nautilus_ZoomLevel_allocbuf (num_levels);
for (i = 0; i < num_levels; ++i) {
buffer[i] = zoom_levels[i];
}
return buffer;
}
static CORBA_float
impl_Nautilus_Zoomable__get_zoom_level (PortableServer_Servant servant,
CORBA_Environment *ev)
{
impl_POA_Nautilus_Zoomable *zoomable;
zoomable = (impl_POA_Nautilus_Zoomable *)servant;
return zoomable->gtk_object->details->zoom_level;
}
static void
impl_Nautilus_Zoomable__set_zoom_level (PortableServer_Servant servant,
const CORBA_float zoom_level,
CORBA_Environment *ev)
{
impl_POA_Nautilus_Zoomable *zoomable;
zoomable = (impl_POA_Nautilus_Zoomable *)servant;
gtk_signal_emit (GTK_OBJECT (zoomable->gtk_object), signals[SET_ZOOM_LEVEL], zoom_level);
}
static CORBA_float
impl_Nautilus_Zoomable__get_min_zoom_level (PortableServer_Servant servant,
CORBA_Environment *ev)
{
impl_POA_Nautilus_Zoomable *zoomable;
zoomable = (impl_POA_Nautilus_Zoomable *)servant;
return zoomable->gtk_object->details->min_zoom_level;
}
static CORBA_float
impl_Nautilus_Zoomable__get_max_zoom_level (PortableServer_Servant servant,
CORBA_Environment *ev)
{
impl_POA_Nautilus_Zoomable *zoomable;
zoomable = (impl_POA_Nautilus_Zoomable *)servant;
return zoomable->gtk_object->details->max_zoom_level;
}
static CORBA_boolean
impl_Nautilus_Zoomable__get_is_continuous (PortableServer_Servant servant,
CORBA_Environment *ev)
{
impl_POA_Nautilus_Zoomable *zoomable;
zoomable = (impl_POA_Nautilus_Zoomable *)servant;
return zoomable->gtk_object->details->is_continuous;
}
static Nautilus_ZoomLevelList *
impl_Nautilus_Zoomable__get_preferred_zoom_level_list (PortableServer_Servant servant,
CORBA_Environment *ev)
{
Nautilus_ZoomLevelList *list;
impl_POA_Nautilus_Zoomable *zoomable;
zoomable = (impl_POA_Nautilus_Zoomable *)servant;
list = Nautilus_ZoomLevelList__alloc ();
list->_maximum = zoomable->gtk_object->details->num_preferred_zoom_levels;
list->_length = zoomable->gtk_object->details->num_preferred_zoom_levels;
list->_buffer = zoomable->gtk_object->details->preferred_zoom_levels;
/* set_release defaults to FALSE - CORBA_sequence_set_release (list, FALSE) */
return list;
}
static void
impl_Nautilus_Zoomable_zoom_in (PortableServer_Servant servant,
CORBA_Environment *ev)
{
impl_POA_Nautilus_Zoomable *zoomable;
zoomable = (impl_POA_Nautilus_Zoomable *)servant;
gtk_signal_emit (GTK_OBJECT (zoomable->gtk_object), signals[ZOOM_IN]);
}
static void
impl_Nautilus_Zoomable_zoom_out (PortableServer_Servant servant,
CORBA_Environment *ev)
{
impl_POA_Nautilus_Zoomable *zoomable;
zoomable = (impl_POA_Nautilus_Zoomable *)servant;
gtk_signal_emit (GTK_OBJECT (zoomable->gtk_object), signals[ZOOM_OUT]);
}
static void
impl_Nautilus_Zoomable_zoom_to_fit (PortableServer_Servant servant,
CORBA_Environment *ev)
{
impl_POA_Nautilus_Zoomable *zoomable;
zoomable = (impl_POA_Nautilus_Zoomable *)servant;
gtk_signal_emit (GTK_OBJECT (zoomable->gtk_object), signals[ZOOM_TO_FIT]);
}
static void
impl_Nautilus_Zoomable__destroy (BonoboObject *obj,
PortableServer_Servant servant)
{
PortableServer_ObjectId *objid;
CORBA_Environment ev;
CORBA_exception_init(&ev);
objid = PortableServer_POA_servant_to_id (bonobo_poa (), servant, &ev);
PortableServer_POA_deactivate_object (bonobo_poa (), objid, &ev);
CORBA_free (objid);
obj->servant = NULL;
POA_Nautilus_Zoomable__fini (servant, &ev);
g_free (servant);
CORBA_exception_free(&ev);
}
static Nautilus_Zoomable
impl_Nautilus_Zoomable__create (NautilusZoomable *zoomable, CORBA_Environment * ev)
{
Nautilus_Zoomable retval;
impl_POA_Nautilus_Zoomable *servant;
NautilusZoomableClass *zoomable_class = NAUTILUS_ZOOMABLE_CLASS (GTK_OBJECT(zoomable)->klass);
servant = g_new0 (impl_POA_Nautilus_Zoomable, 1);
servant->servant.vepv = zoomable_class->vepv;
if (!servant->servant.vepv->Bonobo_Unknown_epv)
servant->servant.vepv->Bonobo_Unknown_epv = bonobo_object_get_epv ();
POA_Nautilus_Zoomable__init ((PortableServer_Servant) servant, ev);
servant->gtk_object = zoomable;
retval = bonobo_object_activate_servant (BONOBO_OBJECT (zoomable), servant);
gtk_signal_connect (GTK_OBJECT (zoomable), "destroy", impl_Nautilus_Zoomable__destroy, servant);
return retval;
}
static void nautilus_zoomable_initialize_class (NautilusZoomableClass *klass);
static void nautilus_zoomable_initialize (NautilusZoomable *zoomable);
static void nautilus_zoomable_destroy (NautilusZoomable *view);
static void nautilus_zoomable_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void nautilus_zoomable_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
NAUTILUS_DEFINE_CLASS_BOILERPLATE(NautilusZoomable, nautilus_zoomable, BONOBO_OBJECT_TYPE)
/* This would go into nautilus-gtk-extensions.c, but we don't want the dependency. */
static void
marshal_NONE__DOUBLE (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args)
{
(* (void (*)(GtkObject *, double, gpointer)) func)
(object,
GTK_VALUE_DOUBLE (args[0]),
func_data);
}
static void
nautilus_zoomable_initialize_class (NautilusZoomableClass *klass)
{
GtkObjectClass *object_class;
object_class = (GtkObjectClass*) klass;
object_class->destroy = (void (*)(GtkObject*))nautilus_zoomable_destroy;
object_class->set_arg = nautilus_zoomable_set_arg;
object_class->get_arg = nautilus_zoomable_get_arg;
parent_class = gtk_type_class (gtk_type_parent (object_class->type));
klass->vepv = &impl_Nautilus_Zoomable_vepv;
signals[SET_ZOOM_LEVEL] =
gtk_signal_new ("set_zoom_level",
GTK_RUN_LAST,
object_class->type,
GTK_SIGNAL_OFFSET (NautilusZoomableClass, set_zoom_level),
marshal_NONE__DOUBLE,
GTK_TYPE_NONE, 1, GTK_TYPE_DOUBLE);
signals[ZOOM_IN] =
gtk_signal_new ("zoom_in",
GTK_RUN_LAST,
object_class->type,
GTK_SIGNAL_OFFSET (NautilusZoomableClass, zoom_in),
gtk_marshal_NONE__NONE,
GTK_TYPE_NONE, 0);
signals[ZOOM_OUT] =
gtk_signal_new ("zoom_out",
GTK_RUN_LAST,
object_class->type,
GTK_SIGNAL_OFFSET (NautilusZoomableClass, zoom_out),
gtk_marshal_NONE__NONE,
GTK_TYPE_NONE, 0);
signals[ZOOM_TO_FIT] =
gtk_signal_new ("zoom_to_fit",
GTK_RUN_LAST,
object_class->type,
GTK_SIGNAL_OFFSET (NautilusZoomableClass, zoom_to_fit),
gtk_marshal_NONE__NONE,
GTK_TYPE_NONE, 0);
gtk_object_class_add_signals (object_class, signals, LAST_SIGNAL);
gtk_object_add_arg_type ("NautilusZoomable::bonobo_control",
GTK_TYPE_OBJECT,
GTK_ARG_READWRITE | GTK_ARG_CONSTRUCT | GTK_ARG_CONSTRUCT_ONLY,
ARG_BONOBO_CONTROL);
gtk_object_add_arg_type ("NautilusZoomable::min_zoom_level",
GTK_TYPE_DOUBLE,
GTK_ARG_READWRITE | GTK_ARG_CONSTRUCT | GTK_ARG_CONSTRUCT_ONLY,
ARG_MIN_ZOOM_LEVEL);
gtk_object_add_arg_type ("NautilusZoomable::max_zoom_level",
GTK_TYPE_DOUBLE,
GTK_ARG_READWRITE | GTK_ARG_CONSTRUCT | GTK_ARG_CONSTRUCT_ONLY,
ARG_MAX_ZOOM_LEVEL);
gtk_object_add_arg_type ("NautilusZoomable::is_continuous",
GTK_TYPE_BOOL,
GTK_ARG_READWRITE | GTK_ARG_CONSTRUCT | GTK_ARG_CONSTRUCT_ONLY,
ARG_IS_CONTINUOUS);
gtk_object_add_arg_type ("NautilusZoomable::preferred_zoom_levels",
GTK_TYPE_POINTER,
GTK_ARG_READWRITE | GTK_ARG_CONSTRUCT | GTK_ARG_CONSTRUCT_ONLY,
ARG_PREFERRED_ZOOM_LEVELS);
gtk_object_add_arg_type ("NautilusZoomable::num_preferred_zoom_levels",
GTK_TYPE_INT,
GTK_ARG_READWRITE | GTK_ARG_CONSTRUCT | GTK_ARG_CONSTRUCT_ONLY,
ARG_NUM_PREFERRED_ZOOM_LEVELS);
}
static void
nautilus_zoomable_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
NautilusZoomable *zoomable;
zoomable = NAUTILUS_ZOOMABLE (object);
switch(arg_id) {
case ARG_BONOBO_CONTROL:
nautilus_zoomable_real_set_bonobo_control
(zoomable,
BONOBO_CONTROL (GTK_VALUE_OBJECT (*arg)));
break;
case ARG_MIN_ZOOM_LEVEL:
zoomable->details->min_zoom_level = GTK_VALUE_DOUBLE (*arg);
break;
case ARG_MAX_ZOOM_LEVEL:
zoomable->details->max_zoom_level = GTK_VALUE_DOUBLE (*arg);
break;
case ARG_IS_CONTINUOUS:
zoomable->details->is_continuous = GTK_VALUE_BOOL (*arg);
break;
case ARG_PREFERRED_ZOOM_LEVELS:
zoomable->details->preferred_zoom_levels = GTK_VALUE_POINTER (*arg);
break;
case ARG_NUM_PREFERRED_ZOOM_LEVELS:
zoomable->details->num_preferred_zoom_levels = GTK_VALUE_INT (*arg);
break;
}
}
static void
nautilus_zoomable_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id)
{
NautilusZoomable *view;
view = NAUTILUS_ZOOMABLE (object);
switch(arg_id) {
case ARG_BONOBO_CONTROL:
GTK_VALUE_OBJECT (*arg) = GTK_OBJECT (nautilus_zoomable_get_bonobo_control (NAUTILUS_ZOOMABLE (object)));
break;
case ARG_MIN_ZOOM_LEVEL:
GTK_VALUE_DOUBLE (*arg) = NAUTILUS_ZOOMABLE (object)->details->min_zoom_level;
break;
case ARG_MAX_ZOOM_LEVEL:
GTK_VALUE_DOUBLE (*arg) = NAUTILUS_ZOOMABLE (object)->details->max_zoom_level;
break;
case ARG_IS_CONTINUOUS:
GTK_VALUE_BOOL (*arg) = NAUTILUS_ZOOMABLE (object)->details->is_continuous;
break;
case ARG_PREFERRED_ZOOM_LEVELS:
GTK_VALUE_POINTER (*arg) = NAUTILUS_ZOOMABLE (object)->details->preferred_zoom_levels;
break;
case ARG_NUM_PREFERRED_ZOOM_LEVELS:
GTK_VALUE_INT (*arg) = NAUTILUS_ZOOMABLE (object)->details->num_preferred_zoom_levels;
break;
}
}
static void
nautilus_zoomable_initialize (NautilusZoomable *zoomable)
{
CORBA_Environment ev;
CORBA_exception_init(&ev);
zoomable->details = g_new0 (NautilusZoomableDetails, 1);
bonobo_object_construct (BONOBO_OBJECT (zoomable), impl_Nautilus_Zoomable__create (zoomable, &ev));
CORBA_exception_free(&ev);
}
NautilusZoomable *
nautilus_zoomable_new (GtkWidget *widget,
double min_zoom_level,
double max_zoom_level,
gboolean is_continuous,
double *preferred_zoom_levels,
int num_preferred_zoom_levels)
{
return nautilus_zoomable_new_from_bonobo_control
(bonobo_control_new (widget),
min_zoom_level,
max_zoom_level,
is_continuous,
preferred_zoom_levels,
num_preferred_zoom_levels);
}
NautilusZoomable *
nautilus_zoomable_new_from_bonobo_control (BonoboControl *bonobo_control,
double min_zoom_level,
double max_zoom_level,
gboolean is_continuous,
double *preferred_zoom_levels,
int num_preferred_zoom_levels)
{
NautilusZoomable *zoomable;
zoomable = NAUTILUS_ZOOMABLE (gtk_object_new (NAUTILUS_TYPE_ZOOMABLE,
"bonobo_control", bonobo_control,
"min_zoom_level", min_zoom_level,
"max_zoom_level", max_zoom_level,
"is_continuous", is_continuous,
"preferred_zoom_levels", nautilus_ZoomLevelListBuffer_from_zoom_levels (preferred_zoom_levels, num_preferred_zoom_levels),
"num_preferred_zoom_levels", num_preferred_zoom_levels,
NULL));
return zoomable;
}
static void
nautilus_zoomable_destroy (NautilusZoomable *view)
{
CORBA_free (view->details->preferred_zoom_levels);
g_free (view->details);
NAUTILUS_CALL_PARENT_CLASS (GTK_OBJECT_CLASS, destroy, GTK_OBJECT (view));
}
static gboolean
nautilus_zoomable_ensure_zoomable_frame (NautilusZoomable *view)
{
CORBA_Environment ev;
g_assert (NAUTILUS_IS_ZOOMABLE (view));
CORBA_exception_init (&ev);
if (CORBA_Object_is_nil (view->details->zoomable_frame, &ev)) {
view->details->zoomable_frame = Bonobo_Unknown_query_interface
(bonobo_control_get_control_frame
(BONOBO_CONTROL (nautilus_zoomable_get_bonobo_control (view))),
"IDL:Nautilus/ZoomableFrame:1.0", &ev);
if (ev._major != CORBA_NO_EXCEPTION) {
view->details->zoomable_frame = CORBA_OBJECT_NIL;
}
if (CORBA_Object_is_nil (view->details->zoomable_frame, &ev)) {
view->details->zoomable_frame = CORBA_OBJECT_NIL;
}
/* Don't keep a ref to the frame, because that would be circular. */
if (view->details->zoomable_frame != CORBA_OBJECT_NIL) {
Bonobo_Unknown_unref (view->details->zoomable_frame, &ev);
}
}
CORBA_exception_free (&ev);
return view->details->zoomable_frame != CORBA_OBJECT_NIL;
}
void
nautilus_zoomable_set_zoom_level (NautilusZoomable *view,
double zoom_level)
{
CORBA_Environment ev;
g_return_if_fail (NAUTILUS_IS_ZOOMABLE (view));
CORBA_exception_init (&ev);
view->details->zoom_level = zoom_level;
if (nautilus_zoomable_ensure_zoomable_frame (view)) {
Nautilus_ZoomableFrame_report_zoom_level_changed (view->details->zoomable_frame, zoom_level, &ev);
if (ev._major != CORBA_NO_EXCEPTION) {
CORBA_Object_release (view->details->zoomable_frame, &ev);
view->details->zoomable_frame = CORBA_OBJECT_NIL;
}
}
CORBA_exception_free (&ev);
}
BonoboControl *
nautilus_zoomable_get_bonobo_control (NautilusZoomable *view)
{
return view->details->control;
}
void
nautilus_zoomable_real_set_bonobo_control (NautilusZoomable *view,
BonoboControl *bonobo_control)
{
view->details->control = bonobo_control;
bonobo_object_add_interface (BONOBO_OBJECT (view), BONOBO_OBJECT (view->details->control));
}
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