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gimp/plug-ins/common/busy-dialog.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* busy-dialog.c
* Copyright (C) 2018 Ell
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <libgimp/gimp.h>
#include <libgimp/gimpui.h>
#include "libgimp/stdplugins-intl.h"
#define PLUG_IN_PROC "plug-in-busy-dialog"
#define PLUG_IN_BINARY "busy-dialog"
#define PLUG_IN_ROLE "gimp-busy-dialog"
typedef struct
{
GIOChannel *read_channel;
GIOChannel *write_channel;
} Context;
static void query (void);
static void run (const gchar *name,
gint nparams,
const GimpParam *param,
gint *nreturn_vals,
GimpParam **return_vals);
static GimpPDBStatusType busy_dialog (gint read_fd,
gint write_fd,
const gchar *message,
gboolean cancelable);
static gboolean busy_dialog_read_channel_notify (GIOChannel *source,
GIOCondition condition,
Context *context);
static gboolean busy_dialog_delete_event (GtkDialog *dialog,
GdkEvent *event,
Context *context);
static void busy_dialog_response (GtkDialog *dialog,
gint response_id,
Context *context);
const GimpPlugInInfo PLUG_IN_INFO =
{
NULL, /* init_proc */
NULL, /* quit_proc */
query, /* query_proc */
run, /* run_proc */
};
MAIN ()
static void
query (void)
{
static const GimpParamDef args [] =
{
{ GIMP_PDB_INT32, "run-mode", "The run mode { RUN-INTERACTIVE (0) }" },
{ GIMP_PDB_INT32, "read-fd", "The read file descriptor" },
{ GIMP_PDB_INT32, "write-fd", "The write file descriptor" },
{ GIMP_PDB_STRING, "message", "The message" },
{ GIMP_PDB_INT32, "cancelable", "Whether the dialog is cancelable (TRUE or FALSE)" }
};
gimp_install_procedure (PLUG_IN_PROC,
"Show a dialog while waiting for an operation to finish",
"Used by GIMP to display a dialog, containing a "
"spinner and a custom message, while waiting for an "
"ongoing operation to finish. Optionally, the dialog "
"may provide a \"Cancel\" button, which can be used "
"to cancel the operation.",
"Ell",
"Ell",
"2018",
NULL,
"",
GIMP_PLUGIN,
G_N_ELEMENTS (args), 0,
args, NULL);
}
static void
run (const gchar *name,
gint n_params,
const GimpParam *params,
gint *n_return_vals,
GimpParam **return_vals)
{
GimpRunMode run_mode = params[0].data.d_int32;
GimpPDBStatusType status = GIMP_PDB_SUCCESS;
static GimpParam values[1];
values[0].type = GIMP_PDB_STATUS;
values[0].data.d_status = status;
*n_return_vals = 1;
*return_vals = values;
INIT_I18N ();
switch (run_mode)
{
case GIMP_RUN_INTERACTIVE:
case GIMP_RUN_NONINTERACTIVE:
case GIMP_RUN_WITH_LAST_VALS:
if (n_params != 5)
{
status = GIMP_PDB_CALLING_ERROR;
}
else
{
status = busy_dialog (params[1].data.d_int32,
params[2].data.d_int32,
params[3].data.d_string,
params[4].data.d_int32);
}
break;
default:
status = GIMP_PDB_CALLING_ERROR;
break;
}
values[0].data.d_status = status;
}
static GimpPDBStatusType
busy_dialog (gint read_fd,
gint write_fd,
const gchar *message,
gboolean cancelable)
{
Context context;
GtkWidget *window;
GtkWidget *content_area;
GtkWidget *vbox;
GtkWidget *label;
GtkWidget *box;
#ifdef G_OS_WIN32
context.read_channel = g_io_channel_win32_new_fd (read_fd);
context.write_channel = g_io_channel_win32_new_fd (write_fd);
#else
context.read_channel = g_io_channel_unix_new (read_fd);
context.write_channel = g_io_channel_unix_new (write_fd);
#endif
g_io_channel_set_close_on_unref (context.read_channel, TRUE);
g_io_channel_set_close_on_unref (context.write_channel, TRUE);
/* triggered when the operation is finished in the main app, and we should
* quit.
*/
g_io_add_watch (context.read_channel, G_IO_IN | G_IO_ERR | G_IO_HUP,
(GIOFunc) busy_dialog_read_channel_notify,
&context);
/* call gtk_init() before gimp_ui_init(), to avoid DESKTOP_STARTUP_ID from
* taking effect -- we want the dialog to be prominently displayed above
* other plug-in windows.
*/
gtk_init (NULL, NULL);
gimp_ui_init (PLUG_IN_BINARY, FALSE);
/* the main window */
if (! cancelable)
{
window = g_object_new (GTK_TYPE_WINDOW,
"title", _("Please Wait"),
"skip-taskbar-hint", TRUE,
"deletable", FALSE,
"resizable", FALSE,
"role", "gimp-busy-dialog",
"type-hint", GDK_WINDOW_TYPE_HINT_DIALOG,
"window-position", GTK_WIN_POS_CENTER,
NULL);
g_signal_connect (window, "delete-event", G_CALLBACK (gtk_true), NULL);
content_area = window;
}
else
{
window = g_object_new (GTK_TYPE_DIALOG,
"title", _("Please Wait"),
"skip-taskbar-hint", TRUE,
"resizable", FALSE,
"role", "gimp-busy-dialog",
"window-position", GTK_WIN_POS_CENTER,
NULL);
gtk_dialog_add_button (GTK_DIALOG (window),
_("_Cancel"), GTK_RESPONSE_CANCEL);
g_signal_connect (window, "delete-event",
G_CALLBACK (busy_dialog_delete_event),
&context);
g_signal_connect (window, "response",
G_CALLBACK (busy_dialog_response),
&context);
content_area = gtk_dialog_get_content_area (GTK_DIALOG (window));
}
/* the main vbox */
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 8);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 16);
gtk_container_add (GTK_CONTAINER (content_area), vbox);
gtk_widget_show (vbox);
/* the title label */
label = gtk_label_new (_("Please wait for the operation to complete"));
gimp_label_set_attributes (GTK_LABEL (label),
PANGO_ATTR_WEIGHT, PANGO_WEIGHT_BOLD,
-1);
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
/* the busy box */
box = gimp_busy_box_new (message);
gtk_container_set_border_width (GTK_CONTAINER (box), 8);
gtk_box_pack_start (GTK_BOX (vbox), box, TRUE, TRUE, 0);
gtk_widget_show (box);
gtk_window_present (GTK_WINDOW (window));
gtk_main ();
gtk_widget_destroy (window);
g_clear_pointer (&context.read_channel, g_io_channel_unref);
g_clear_pointer (&context.write_channel, g_io_channel_unref);
return GIMP_PDB_SUCCESS;
}
static gboolean
busy_dialog_read_channel_notify (GIOChannel *source,
GIOCondition condition,
Context *context)
{
gtk_main_quit ();
return FALSE;
}
static gboolean
busy_dialog_delete_event (GtkDialog *dialog,
GdkEvent *event,
Context *context)
{
gtk_dialog_response (dialog, GTK_RESPONSE_CANCEL);
return TRUE;
}
static void
busy_dialog_response (GtkDialog *dialog,
gint response_id,
Context *context)
{
switch (response_id)
{
case GTK_RESPONSE_CANCEL:
{
GtkWidget *button;
gtk_dialog_set_response_sensitive (dialog, GTK_RESPONSE_CANCEL, FALSE);
button = gtk_dialog_get_widget_for_response (dialog,
GTK_RESPONSE_CANCEL);
gtk_button_set_label (GTK_BUTTON (button), _("Canceling..."));
/* signal the cancellation request to the main app */
g_clear_pointer (&context->write_channel, g_io_channel_unref);
}
break;
default:
break;
}
}
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