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gimp/libgimpwidgets/gimpdialog.c

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/* LIBGIMP - The GIMP Library
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpdialog.c
* Copyright (C) 2000-2003 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 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 Lesser 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 "config.h"
#include <gtk/gtk.h>
#include "gimpwidgetstypes.h"
#include "gimpdialog.h"
#include "gimphelpui.h"
enum
{
PROP_0,
PROP_HELP_FUNC,
PROP_HELP_ID
};
static void gimp_dialog_class_init (GimpDialogClass *klass);
static void gimp_dialog_init (GimpDialog *dialog);
static GObject * gimp_dialog_constructor (GType type,
guint n_params,
GObjectConstructParam *params);
static void gimp_dialog_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gimp_dialog_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec);
static gboolean gimp_dialog_delete_event (GtkWidget *widget,
GdkEventAny *event);
static void gimp_dialog_close (GtkDialog *dialog);
static void gimp_dialog_help (GObject *dialog);
static GtkDialogClass *parent_class = NULL;
static gboolean show_help_button = TRUE;
GType
gimp_dialog_get_type (void)
{
static GType dialog_type = 0;
if (! dialog_type)
{
static const GTypeInfo dialog_info =
{
sizeof (GimpDialogClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_dialog_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpDialog),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_dialog_init,
};
dialog_type = g_type_register_static (GTK_TYPE_DIALOG,
"GimpDialog",
&dialog_info, 0);
}
return dialog_type;
}
static void
gimp_dialog_class_init (GimpDialogClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
GtkDialogClass *dialog_class = GTK_DIALOG_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->constructor = gimp_dialog_constructor;
object_class->set_property = gimp_dialog_set_property;
object_class->get_property = gimp_dialog_get_property;
widget_class->delete_event = gimp_dialog_delete_event;
dialog_class->close = gimp_dialog_close;
/**
* GimpDialog::help-func:
*
* Since: GIMP 2.2
**/
g_object_class_install_property (object_class, PROP_HELP_FUNC,
g_param_spec_pointer ("help-func", NULL, NULL,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
/**
* GimpDialog::help-id:
*
* Since: GIMP 2.2
**/
g_object_class_install_property (object_class, PROP_HELP_ID,
g_param_spec_string ("help-id", NULL, NULL,
NULL,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY));
}
static GObject *
gimp_dialog_constructor (GType type,
guint n_params,
GObjectConstructParam *params)
{
GObject *object;
GimpHelpFunc help_func;
const gchar *help_id;
object = G_OBJECT_CLASS (parent_class)->constructor (type, n_params, params);
help_func = g_object_get_data (object, "gimp-dialog-help-func");
help_id = g_object_get_data (object, "gimp-dialog-help-id");
if (help_func)
gimp_help_connect (GTK_WIDGET (object), help_func, help_id, object);
if (show_help_button && help_func && help_id)
{
GtkDialog *dialog = GTK_DIALOG (object);
GtkWidget *button = gtk_button_new_from_stock (GTK_STOCK_HELP);
gtk_box_pack_end (GTK_BOX (dialog->action_area), button, FALSE, TRUE, 0);
gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (dialog->action_area),
button, TRUE);
gtk_widget_show (button);
g_signal_connect_object (button, "clicked",
G_CALLBACK (gimp_dialog_help),
dialog, G_CONNECT_SWAPPED);
g_object_set_data (object, "gimp-dialog-help-button", button);
}
return object;
}
static void
gimp_dialog_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
switch (property_id)
{
case PROP_HELP_FUNC:
g_object_set_data (object, "gimp-dialog-help-func",
g_value_get_pointer (value));
break;
case PROP_HELP_ID:
g_object_set_data_full (object, "gimp-dialog-help-id",
g_value_dup_string (value),
(GDestroyNotify) g_free);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_dialog_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
switch (property_id)
{
case PROP_HELP_FUNC:
g_value_set_pointer (value, g_object_get_data (object,
"gimp-dialog-help-func"));
break;
case PROP_HELP_ID:
g_value_set_string (value, g_object_get_data (object,
"gimp-dialog-help-id"));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
gimp_dialog_init (GimpDialog *dialog)
{
gtk_dialog_set_has_separator (GTK_DIALOG (dialog), FALSE);
}
static gboolean
gimp_dialog_delete_event (GtkWidget *widget,
GdkEventAny *event)
{
return TRUE;
}
static void
gimp_dialog_close (GtkDialog *dialog)
{
/* Synthesize delete_event to close dialog. */
GtkWidget *widget = GTK_WIDGET (dialog);
if (widget->window)
{
GdkEvent *event;
event = gdk_event_new (GDK_DELETE);
event->any.window = g_object_ref (widget->window);
event->any.send_event = TRUE;
gtk_main_do_event (event);
gdk_event_free (event);
}
}
static void
gimp_dialog_help (GObject *dialog)
{
GimpHelpFunc help_func = g_object_get_data (dialog, "gimp-dialog-help-func");
if (help_func)
help_func (g_object_get_data (dialog, "gimp-dialog-help-id"), dialog);
}
/**
* gimp_dialog_new:
* @title: The dialog's title which will be set with
* gtk_window_set_title().
* @role: The dialog's @role which will be set with
* gtk_window_set_role().
* @parent: The @parent widget of this dialog.
* @flags: The @flags (see the #GtkDialog documentation).
* @help_func: The function which will be called if the user presses "F1".
* @help_id: The help_id which will be passed to @help_func.
* @...: A %NULL-terminated @va_list destribing the
* action_area buttons.
*
* Creates a new @GimpDialog widget.
*
* This function simply packs the action_area arguments passed in "..."
* into a @va_list variable and passes everything to gimp_dialog_new_valist().
*
* For a description of the format of the @va_list describing the
* action_area buttons see gtk_dialog_new_with_buttons().
*
* Returns: A #GimpDialog.
**/
GtkWidget *
gimp_dialog_new (const gchar *title,
const gchar *role,
GtkWidget *parent,
GtkDialogFlags flags,
GimpHelpFunc help_func,
const gchar *help_id,
...)
{
GtkWidget *dialog;
va_list args;
g_return_val_if_fail (parent == NULL || GTK_IS_WIDGET (parent), NULL);
g_return_val_if_fail (title != NULL, NULL);
g_return_val_if_fail (role != NULL, NULL);
va_start (args, help_id);
dialog = gimp_dialog_new_valist (title, role,
parent, flags,
help_func, help_id,
args);
va_end (args);
return dialog;
}
/**
* gimp_dialog_new_valist:
* @title: The dialog's title which will be set with
* gtk_window_set_title().
* @role: The dialog's @role which will be set with
* gtk_window_set_role().
* @parent: The @parent widget of this dialog or %NULL.
* @flags: The @flags (see the #GtkDialog documentation).
* @help_func: The function which will be called if the user presses "F1".
* @help_id: The help_id which will be passed to @help_func.
* @args: A @va_list destribing the action_area buttons.
*
* Creates a new @GimpDialog widget. If a GtkWindow is specified as
* @parent then the dialog will be made transient for this window.
*
* For a description of the format of the @va_list describing the
* action_area buttons see gtk_dialog_new_with_buttons().
*
* Returns: A #GimpDialog.
**/
GtkWidget *
gimp_dialog_new_valist (const gchar *title,
const gchar *role,
GtkWidget *parent,
GtkDialogFlags flags,
GimpHelpFunc help_func,
const gchar *help_id,
va_list args)
{
GtkWidget *dialog;
g_return_val_if_fail (title != NULL, NULL);
g_return_val_if_fail (role != NULL, NULL);
g_return_val_if_fail (parent == NULL || GTK_IS_WIDGET (parent), NULL);
dialog = g_object_new (GIMP_TYPE_DIALOG,
"title", title,
"role", role,
"modal", (flags & GTK_DIALOG_MODAL),
"help-func", help_func,
"help-id", help_id,
NULL);
if (parent)
{
if (GTK_IS_WINDOW (parent))
{
gtk_window_set_transient_for (GTK_WINDOW (dialog),
GTK_WINDOW (parent));
}
else
{
gtk_window_set_screen (GTK_WINDOW (dialog),
gtk_widget_get_screen (parent));
}
if (flags & GTK_DIALOG_DESTROY_WITH_PARENT)
g_signal_connect_object (parent, "destroy",
G_CALLBACK (gimp_dialog_close),
dialog, G_CONNECT_SWAPPED);
}
gimp_dialog_add_buttons_valist (GIMP_DIALOG (dialog), args);
return dialog;
}
/**
* gimp_dialog_add_buttons_valist:
* @dialog: The @dialog to add buttons to.
* @args: The buttons as va_list.
*
* This function is essentially the same as gtk_dialog_add_buttons()
* except it takes a va_list instead of '...'
**/
void
gimp_dialog_add_buttons_valist (GimpDialog *dialog,
va_list args)
{
const gchar *button_text;
gint response_id;
g_return_if_fail (GIMP_IS_DIALOG (dialog));
while ((button_text = va_arg (args, const gchar *)))
{
response_id = va_arg (args, gint);
/* hide the automatically added help button if another one is added */
if (response_id == GTK_RESPONSE_HELP)
{
GtkWidget *button = g_object_get_data (G_OBJECT (dialog),
"gimp-dialog-help-button");
gtk_widget_hide (button);
}
gtk_dialog_add_button (GTK_DIALOG (dialog), button_text, response_id);
if (response_id == GTK_RESPONSE_OK)
{
gtk_dialog_set_default_response (GTK_DIALOG (dialog),
GTK_RESPONSE_OK);
}
}
}
typedef struct
{
GtkDialog *dialog;
gint response_id;
GMainLoop *loop;
gboolean destroyed;
} RunInfo;
static void
run_shutdown_loop (RunInfo *ri)
{
if (g_main_loop_is_running (ri->loop))
g_main_loop_quit (ri->loop);
}
static void
run_unmap_handler (GtkDialog *dialog,
RunInfo *ri)
{
run_shutdown_loop (ri);
}
static void
run_response_handler (GtkDialog *dialog,
gint response_id,
RunInfo *ri)
{
ri->response_id = response_id;
run_shutdown_loop (ri);
}
static gint
run_delete_handler (GtkDialog *dialog,
GdkEventAny *event,
RunInfo *ri)
{
run_shutdown_loop (ri);
return TRUE; /* Do not destroy */
}
static void
run_destroy_handler (GtkDialog *dialog,
RunInfo *ri)
{
/* shutdown_loop will be called by run_unmap_handler */
ri->destroyed = TRUE;
}
/**
* gimp_dialog_run:
* @dialog: a #GimpDialog
*
* This function does exactly the same as gtk_dialog_run() except it
* does not make the dialog modal while the #GMainLoop is running.
*
* Return value: response ID
**/
gint
gimp_dialog_run (GimpDialog *dialog)
{
RunInfo ri = { NULL, GTK_RESPONSE_NONE, NULL };
gulong response_handler;
gulong unmap_handler;
gulong destroy_handler;
gulong delete_handler;
g_return_val_if_fail (GIMP_IS_DIALOG (dialog), -1);
g_object_ref (dialog);
gtk_window_present (GTK_WINDOW (dialog));
response_handler = g_signal_connect (dialog, "response",
G_CALLBACK (run_response_handler),
&ri);
unmap_handler = g_signal_connect (dialog, "unmap",
G_CALLBACK (run_unmap_handler),
&ri);
delete_handler = g_signal_connect (dialog, "delete_event",
G_CALLBACK (run_delete_handler),
&ri);
destroy_handler = g_signal_connect (dialog, "destroy",
G_CALLBACK (run_destroy_handler),
&ri);
ri.loop = g_main_loop_new (NULL, FALSE);
GDK_THREADS_LEAVE ();
g_main_loop_run (ri.loop);
GDK_THREADS_ENTER ();
g_main_loop_unref (ri.loop);
ri.loop = NULL;
ri.destroyed = FALSE;
if (!ri.destroyed)
{
g_signal_handler_disconnect (dialog, response_handler);
g_signal_handler_disconnect (dialog, unmap_handler);
g_signal_handler_disconnect (dialog, delete_handler);
g_signal_handler_disconnect (dialog, destroy_handler);
}
g_object_unref (dialog);
return ri.response_id;
}
/**
* gimp_dialogs_show_help_button:
* @show: whether a help button should be added when creating a GimpDialog
*
* This function is for internal use only.
*
* Since: GIMP 2.2
**/
void
gimp_dialogs_show_help_button (gboolean show)
{
show_help_button = show ? TRUE : FALSE;
}
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