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gtk/tests/prop-editor.c
Owen Taylor 6d2ce70689 Block against redundant changes. 
Mon May 14 14:56:21 2001  Owen Taylor  <otaylor@redhat.com>

	* tests/prop-editor.c: Block against redundant changes.

	* gtk/gtkpaned.c gtk/gtk[hv]paned.c: Add position, position_set
	properties.
2001-05-14 19:14:57 +00:00

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/* prop-editor.c
* Copyright (C) 2000 Red Hat, 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <string.h>
#include <gtk/gtk.h>
#include "prop-editor.h"
static void
get_param_specs (GType type,
GParamSpec ***specs,
gint *n_specs)
{
GObjectClass *class = g_type_class_peek (type);
/* We count on the fact we have an instance, or else we'd have
* to use g_type_class_ref ();
*/
/* Use private interface for now, fix later */
*specs = class->property_specs;
*n_specs = class->n_property_specs;
}
typedef struct
{
gpointer instance;
GObject *alive_object;
guint id;
} DisconnectData;
static void
disconnect_func (gpointer data)
{
DisconnectData *dd = data;
g_signal_handler_disconnect (dd->instance, dd->id);
}
static void
signal_removed (gpointer data,
GClosure *closure)
{
DisconnectData *dd = data;
g_object_steal_data (dd->alive_object, "alive-object-data");
g_free (dd);
}
static void
g_object_connect_property (GObject *object,
const gchar *prop_name,
GtkSignalFunc func,
gpointer data,
GObject *alive_object)
{
GClosure *closure;
gchar *with_detail = g_strconcat ("notify::", prop_name, NULL);
DisconnectData *dd;
dd = g_new (DisconnectData, 1);
closure = g_cclosure_new (func, data, NULL);
g_closure_add_invalidate_notifier (closure, dd, signal_removed);
dd->id = g_signal_connect_closure (object, with_detail,
closure, FALSE);
dd->instance = object;
dd->alive_object = alive_object;
g_object_set_data_full (G_OBJECT (alive_object),
"alive-object-data",
dd,
disconnect_func);
g_free (with_detail);
}
typedef struct
{
GObject *obj;
gchar *prop;
gint modified_id;
} ObjectProperty;
static void
free_object_property (ObjectProperty *p)
{
g_free (p->prop);
g_free (p);
}
static void
connect_controller (GObject *controller,
const gchar *signal,
GObject *model,
const gchar *prop_name,
GtkSignalFunc func)
{
ObjectProperty *p;
p = g_new (ObjectProperty, 1);
p->obj = model;
p->prop = g_strdup (prop_name);
p->modified_id = g_signal_connect_data (controller, signal, func, p,
(GClosureNotify)free_object_property,
FALSE, FALSE);
g_object_set_data (controller, "object-property", p);
}
static void
block_controller (GObject *controller)
{
ObjectProperty *p = g_object_get_data (controller, "object-property");
g_signal_handler_block (controller, p->modified_id);
}
static void
unblock_controller (GObject *controller)
{
ObjectProperty *p = g_object_get_data (controller, "object-property");
g_signal_handler_unblock (controller, p->modified_id);
}
static void
int_modified (GtkAdjustment *adj, gpointer data)
{
ObjectProperty *p = data;
g_object_set (p->obj, p->prop, (int) adj->value, NULL);
}
static void
int_changed (GObject *object, GParamSpec *pspec, gpointer data)
{
GtkAdjustment *adj = GTK_ADJUSTMENT (data);
GValue val = { 0, };
g_value_init (&val, G_TYPE_INT);
g_object_get_property (object, pspec->name, &val);
if (g_value_get_int (&val) != (int)adj->value)
{
block_controller (G_OBJECT (adj));
gtk_adjustment_set_value (adj, g_value_get_int (&val));
unblock_controller (G_OBJECT (adj));
}
g_value_unset (&val);
}
static void
float_modified (GtkAdjustment *adj, gpointer data)
{
ObjectProperty *p = data;
g_object_set (p->obj, p->prop, (float) adj->value, NULL);
}
static void
float_changed (GObject *object, GParamSpec *pspec, gpointer data)
{
GtkAdjustment *adj = GTK_ADJUSTMENT (data);
GValue val = { 0, };
g_value_init (&val, G_TYPE_FLOAT);
g_object_get_property (object, pspec->name, &val);
if (g_value_get_float (&val) != (float) adj->value)
{
block_controller (G_OBJECT (adj));
gtk_adjustment_set_value (adj, g_value_get_float (&val));
unblock_controller (G_OBJECT (adj));
}
g_value_unset (&val);
}
static void
string_modified (GtkEntry *entry, gpointer data)
{
ObjectProperty *p = data;
const gchar *text;
text = gtk_entry_get_text (entry);
g_object_set (p->obj, p->prop, text, NULL);
}
static void
string_changed (GObject *object, GParamSpec *pspec, gpointer data)
{
GtkEntry *entry = GTK_ENTRY (data);
GValue val = { 0, };
const gchar *str;
const gchar *text;
g_value_init (&val, G_TYPE_STRING);
g_object_get_property (object, pspec->name, &val);
str = g_value_get_string (&val);
if (str == NULL)
str = "";
text = gtk_entry_get_text (entry);
if (strcmp (str, text) != 0)
{
block_controller (G_OBJECT (entry));
gtk_entry_set_text (entry, str);
unblock_controller (G_OBJECT (entry));
}
g_value_unset (&val);
}
static void
bool_modified (GtkToggleButton *tb, gpointer data)
{
ObjectProperty *p = data;
g_object_set (p->obj, p->prop, (int) tb->active, NULL);
}
static void
bool_changed (GObject *object, GParamSpec *pspec, gpointer data)
{
GtkToggleButton *tb = GTK_TOGGLE_BUTTON (data);
GValue val = { 0, };
g_value_init (&val, G_TYPE_BOOLEAN);
g_object_get_property (object, pspec->name, &val);
if (g_value_get_boolean (&val) != tb->active)
{
block_controller (G_OBJECT (tb));
gtk_toggle_button_set_active (tb, g_value_get_boolean (&val));
unblock_controller (G_OBJECT (tb));
}
gtk_label_set_text (GTK_LABEL (GTK_BIN (tb)->child), g_value_get_boolean (&val) ?
"TRUE" : "FALSE");
g_value_unset (&val);
}
static void
enum_modified (GtkOptionMenu *om, gpointer data)
{
ObjectProperty *p = data;
gint i;
GParamSpec *spec;
GEnumClass *eclass;
spec = g_object_class_find_property (G_OBJECT_GET_CLASS (p->obj),
p->prop);
eclass = G_ENUM_CLASS (g_type_class_peek (spec->value_type));
i = gtk_option_menu_get_history (om);
g_object_set (p->obj, p->prop, eclass->values[i].value, NULL);
}
static void
enum_changed (GObject *object, GParamSpec *pspec, gpointer data)
{
GtkOptionMenu *om = GTK_OPTION_MENU (data);
GValue val = { 0, };
GEnumClass *eclass;
gint i;
eclass = G_ENUM_CLASS (g_type_class_peek (pspec->value_type));
g_value_init (&val, pspec->value_type);
g_object_get_property (object, pspec->name, &val);
i = 0;
while (i < eclass->n_values)
{
if (eclass->values[i].value == g_value_get_enum (&val))
break;
++i;
}
if (gtk_option_menu_get_history (om) != i)
{
block_controller (G_OBJECT (om));
gtk_option_menu_set_history (om, i);
unblock_controller (G_OBJECT (om));
}
g_value_unset (&val);
}
static gunichar
unichar_get_value (GtkEntry *entry)
{
const gchar *text = gtk_entry_get_text (entry);
if (text[0])
return g_utf8_get_char (text);
else
return 0;
}
static void
unichar_modified (GtkEntry *entry, gpointer data)
{
ObjectProperty *p = data;
gunichar val = unichar_get_value (entry);
g_object_set (p->obj, p->prop, val, NULL);
}
static void
unichar_changed (GObject *object, GParamSpec *pspec, gpointer data)
{
GtkEntry *entry = GTK_ENTRY (data);
gunichar new_val;
gunichar old_val = unichar_get_value (entry);
gchar buf[7];
gint len;
g_object_get (object, pspec->name, &new_val, NULL);
if (new_val != old_val)
{
if (!new_val)
len = 0;
else
len = g_unichar_to_utf8 (new_val, buf);
buf[len] = '\0';
block_controller (G_OBJECT (entry));
gtk_entry_set_text (entry, buf);
unblock_controller (G_OBJECT (entry));
}
}
void
model_destroy (gpointer data)
{
g_object_steal_data (data, "model-object");
gtk_widget_destroy (data);
}
void
window_destroy (gpointer data)
{
g_object_steal_data (data, "prop-editor-win");
}
GtkWidget*
create_prop_editor (GObject *object,
GType type)
{
GtkWidget *win;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *label;
GtkWidget *prop_edit;
GtkWidget *sw;
gint n_specs = 0;
GParamSpec **specs = NULL;
gint i;
GtkAdjustment *adj;
GtkTooltips *tips;
win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
tips = gtk_tooltips_new ();
gtk_signal_connect_object (GTK_OBJECT (win), "destroy",
GTK_SIGNAL_FUNC (gtk_object_destroy), GTK_OBJECT (tips));
/* hold a weak ref to the object we're editing */
g_object_set_data_full (G_OBJECT (object), "prop-editor-win", win, model_destroy);
g_object_set_data_full (G_OBJECT (win), "model-object", object, window_destroy);
vbox = gtk_vbox_new (TRUE, 2);
sw = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (sw), vbox);
gtk_container_add (GTK_CONTAINER (win), sw);
get_param_specs (type, &specs, &n_specs);
i = 0;
while (i < n_specs)
{
GParamSpec *spec = specs[i];
gboolean can_modify;
prop_edit = NULL;
can_modify = ((spec->flags & G_PARAM_WRITABLE) != 0 &&
(spec->flags & G_PARAM_CONSTRUCT_ONLY) == 0);
if ((spec->flags & G_PARAM_READABLE) == 0)
{
/* can't display unreadable properties */
++i;
continue;
}
switch (G_PARAM_SPEC_TYPE (spec))
{
case G_TYPE_PARAM_INT:
hbox = gtk_hbox_new (FALSE, 10);
label = gtk_label_new (spec->nick);
gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
adj = GTK_ADJUSTMENT (gtk_adjustment_new (G_PARAM_SPEC_INT (spec)->default_value,
G_PARAM_SPEC_INT (spec)->minimum,
G_PARAM_SPEC_INT (spec)->maximum,
1,
MAX ((G_PARAM_SPEC_INT (spec)->maximum -
G_PARAM_SPEC_INT (spec)->minimum) / 10, 1),
0.0));
prop_edit = gtk_spin_button_new (adj, 1.0, 0);
gtk_box_pack_end (GTK_BOX (hbox), prop_edit, FALSE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
g_object_connect_property (object, spec->name,
GTK_SIGNAL_FUNC (int_changed),
adj, G_OBJECT (adj));
if (can_modify)
connect_controller (G_OBJECT (adj), "value_changed",
object, spec->name, (GtkSignalFunc) int_modified);
break;
case G_TYPE_PARAM_FLOAT:
hbox = gtk_hbox_new (FALSE, 10);
label = gtk_label_new (spec->nick);
gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
adj = GTK_ADJUSTMENT (gtk_adjustment_new (G_PARAM_SPEC_FLOAT (spec)->default_value,
G_PARAM_SPEC_FLOAT (spec)->minimum,
G_PARAM_SPEC_FLOAT (spec)->maximum,
0.1,
MAX ((G_PARAM_SPEC_FLOAT (spec)->maximum -
G_PARAM_SPEC_FLOAT (spec)->minimum) / 10, 0.1),
0.0));
prop_edit = gtk_spin_button_new (adj, 0.1, 2);
gtk_box_pack_end (GTK_BOX (hbox), prop_edit, FALSE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
g_object_connect_property (object, spec->name,
GTK_SIGNAL_FUNC (float_changed),
adj, G_OBJECT (adj));
if (can_modify)
connect_controller (G_OBJECT (adj), "value_changed",
object, spec->name, (GtkSignalFunc) float_modified);
break;
case G_TYPE_PARAM_STRING:
hbox = gtk_hbox_new (FALSE, 10);
label = gtk_label_new (spec->nick);
gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
prop_edit = gtk_entry_new ();
gtk_box_pack_end (GTK_BOX (hbox), prop_edit, FALSE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
g_object_connect_property (object, spec->name,
GTK_SIGNAL_FUNC (string_changed),
prop_edit, G_OBJECT (prop_edit));
if (can_modify)
connect_controller (G_OBJECT (prop_edit), "changed",
object, spec->name, (GtkSignalFunc) string_modified);
break;
case G_TYPE_PARAM_BOOLEAN:
hbox = gtk_hbox_new (FALSE, 10);
label = gtk_label_new (spec->nick);
gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
prop_edit = gtk_toggle_button_new_with_label ("");
gtk_box_pack_end (GTK_BOX (hbox), prop_edit, FALSE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
g_object_connect_property (object, spec->name,
GTK_SIGNAL_FUNC (bool_changed),
prop_edit, G_OBJECT (prop_edit));
if (can_modify)
connect_controller (G_OBJECT (prop_edit), "toggled",
object, spec->name, (GtkSignalFunc) bool_modified);
break;
case G_TYPE_PARAM_ENUM:
{
GtkWidget *menu;
GEnumClass *eclass;
gint i;
hbox = gtk_hbox_new (FALSE, 10);
label = gtk_label_new (spec->nick);
gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
prop_edit = gtk_option_menu_new ();
menu = gtk_menu_new ();
eclass = G_ENUM_CLASS (g_type_class_ref (spec->value_type));
i = 0;
while (i < eclass->n_values)
{
GtkWidget *mi;
mi = gtk_menu_item_new_with_label (eclass->values[i].value_name);
gtk_widget_show (mi);
gtk_menu_shell_append (GTK_MENU_SHELL (menu), mi);
++i;
}
g_type_class_unref (eclass);
gtk_option_menu_set_menu (GTK_OPTION_MENU (prop_edit), menu);
gtk_box_pack_end (GTK_BOX (hbox), prop_edit, FALSE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
g_object_connect_property (object, spec->name,
GTK_SIGNAL_FUNC (enum_changed),
prop_edit, G_OBJECT (prop_edit));
if (can_modify)
connect_controller (G_OBJECT (prop_edit), "changed",
object, spec->name, (GtkSignalFunc) enum_modified);
}
case G_TYPE_PARAM_UNICHAR:
hbox = gtk_hbox_new (FALSE, 10);
label = gtk_label_new (spec->nick);
gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
prop_edit = gtk_entry_new ();
gtk_entry_set_max_length (GTK_ENTRY (prop_edit), 1);
gtk_box_pack_end (GTK_BOX (hbox), prop_edit, FALSE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
g_object_connect_property (object, spec->name,
GTK_SIGNAL_FUNC (unichar_changed),
prop_edit, G_OBJECT (prop_edit));
if (can_modify)
connect_controller (G_OBJECT (prop_edit), "changed",
object, spec->name, (GtkSignalFunc) unichar_modified);
break;
default:
{
gchar *msg = g_strdup_printf ("%s: don't know how to edit property type %s",
spec->nick, g_type_name (G_PARAM_SPEC_TYPE (spec)));
hbox = gtk_hbox_new (FALSE, 10);
label = gtk_label_new (msg);
g_free (msg);
gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
}
}
if (prop_edit)
{
if (!can_modify)
gtk_widget_set_sensitive (prop_edit, FALSE);
if (spec->blurb)
gtk_tooltips_set_tip (tips, prop_edit, spec->blurb, NULL);
/* set initial value */
g_object_notify (object, spec->name);
}
++i;
}
gtk_window_set_default_size (GTK_WINDOW (win), 300, 500);
gtk_widget_show_all (win);
return win;
}
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