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zenity/src/progress.c

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/*
* progress.c
*
* Copyright (C) 2002 Sun Microsystems, 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., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* Authors: Glynn Foster <glynn.foster@sun.com>
*/
#include "config.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <signal.h>
#include "zenity.h"
#include "util.h"
static GtkBuilder *builder;
static ZenityData *zen_data;
static GIOChannel *channel;
static gint pulsate_timeout = -1;
static gboolean autokill;
static gboolean no_cancel;
static gboolean auto_close;
gint zenity_progress_timeout (gpointer data);
gint zenity_progress_pulsate_timeout (gpointer data);
static void zenity_progress_dialog_response (GtkWidget *widget, int response, gpointer data);
static gboolean
zenity_progress_pulsate_progress_bar (gpointer user_data)
{
gtk_progress_bar_pulse (GTK_PROGRESS_BAR (user_data));
return TRUE;
}
static void
zenity_progress_pulsate_stop ()
{
if (pulsate_timeout > 0) {
g_source_remove (pulsate_timeout);
pulsate_timeout = -1;
}
}
static void
zenity_progress_pulsate_start (GObject *progress_bar)
{
if (pulsate_timeout == -1) {
pulsate_timeout = g_timeout_add (100,
zenity_progress_pulsate_progress_bar,
progress_bar);
}
}
static gboolean
zenity_progress_handle_stdin (GIOChannel *channel,
GIOCondition condition,
gpointer data)
{
static ZenityProgressData *progress_data;
static GObject *progress_bar;
static GObject *progress_label;
float percentage = 0.0;
progress_data = (ZenityProgressData *) data;
progress_bar = gtk_builder_get_object (builder, "zenity_progress_bar");
progress_label = gtk_builder_get_object (builder, "zenity_progress_text");
if ((condition == G_IO_IN) || (condition == G_IO_IN + G_IO_HUP)) {
GString *string;
GError *error = NULL;
string = g_string_new (NULL);
if (progress_data->pulsate) {
zenity_progress_pulsate_start (progress_bar);
}
while (channel->is_readable != TRUE)
;
do {
gint status;
do {
status = g_io_channel_read_line_string (channel, string, NULL, &error);
while (gtk_events_pending ())
gtk_main_iteration ();
} while (status == G_IO_STATUS_AGAIN);
if (status != G_IO_STATUS_NORMAL) {
if (error) {
g_warning ("zenity_progress_handle_stdin () : %s", error->message);
g_error_free (error);
error = NULL;
}
continue;
}
if (!g_ascii_strncasecmp (string->str, "#", 1)) {
gchar *match;
/* We have a comment, so let's try to change the label */
match = g_strstr_len (string->str, strlen (string->str), "#");
match++;
gtk_label_set_text (GTK_LABEL (progress_label), g_strcompress(g_strchomp (g_strchug (match))));
} else if (g_str_has_prefix (string->str, "pulsate")) {
gchar *colon, *command, *value;
zenity_util_strip_newline (string->str);
colon = strchr(string->str, ':');
if (colon == NULL) {
continue;
}
/* split off the command and value */
command = g_strstrip (g_strndup (string->str, colon - string->str));
value = colon + 1;
while (*value && g_ascii_isspace (*value)) value++;
if (!g_ascii_strcasecmp (value, "false")) {
zenity_progress_pulsate_stop ();
gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (progress_bar),
progress_data->percentage / 100.0);
} else {
zenity_progress_pulsate_start (progress_bar);
}
g_free (command);
} else {
if (!g_ascii_isdigit (*(string->str)))
continue;
/* Now try to convert the thing to a number */
percentage = CLAMP(atoi (string->str), 0, 100);
gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (progress_bar),
percentage / 100.0);
progress_data->percentage = percentage;
if (percentage == 100) {
GObject *button;
button = gtk_builder_get_object(builder, "zenity_progress_ok_button");
gtk_widget_set_sensitive(GTK_WIDGET (button), TRUE);
gtk_widget_grab_focus(GTK_WIDGET (button));
if (progress_data->autoclose) {
zen_data->exit_code = zenity_util_return_exit_code (ZENITY_OK);
gtk_main_quit();
}
}
}
} while (g_io_channel_get_buffer_condition (channel) == G_IO_IN);
g_string_free (string, TRUE);
}
if (condition != G_IO_IN) {
/* We assume that we are done, so stop the pulsating and de-sensitize the buttons */
GtkWidget *button;
button = GTK_WIDGET (gtk_builder_get_object (builder,
"zenity_progress_ok_button"));
gtk_widget_set_sensitive (button, TRUE);
gtk_widget_grab_focus (button);
button = GTK_WIDGET (gtk_builder_get_object (builder,
"zenity_progress_cancel_button"));
gtk_widget_set_sensitive (button, FALSE);
gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (progress_bar), 1.0);
zenity_progress_pulsate_stop ();
g_object_unref (builder);
if (progress_data->autoclose) {
zen_data->exit_code = zenity_util_return_exit_code (ZENITY_OK);
gtk_main_quit();
}
g_io_channel_shutdown (channel, TRUE, NULL);
return FALSE;
}
return TRUE;
}
static void
zenity_progress_read_info (ZenityProgressData *progress_data)
{
channel = g_io_channel_unix_new (0);
g_io_channel_set_encoding (channel, NULL, NULL);
g_io_channel_set_flags (channel, G_IO_FLAG_NONBLOCK, NULL);
g_io_add_watch (channel, G_IO_IN | G_IO_HUP, zenity_progress_handle_stdin, progress_data);
}
void
zenity_progress (ZenityData *data, ZenityProgressData *progress_data)
{
GtkWidget *dialog;
GObject *text;
GObject *progress_bar;
GObject *cancel_button,*ok_button;
zen_data = data;
builder = zenity_util_load_ui_file ("zenity_progress_dialog", NULL);
if (builder == NULL) {
data->exit_code = zenity_util_return_exit_code (ZENITY_ERROR);
return;
}
gtk_builder_connect_signals (builder, NULL);
dialog = GTK_WIDGET (gtk_builder_get_object (builder,
"zenity_progress_dialog"));
g_signal_connect (G_OBJECT (dialog), "response",
G_CALLBACK (zenity_progress_dialog_response), data);
if (data->dialog_title)
gtk_window_set_title (GTK_WINDOW (dialog), data->dialog_title);
zenity_util_set_window_icon (dialog, data->window_icon, ZENITY_IMAGE_FULLPATH ("zenity-progress.png"));
if (data->width > -1 || data->height > -1)
gtk_window_set_default_size (GTK_WINDOW (dialog), data->width, data->height);
text = gtk_builder_get_object (builder, "zenity_progress_text");
if (progress_data->dialog_text)
gtk_label_set_markup (GTK_LABEL (text), g_strcompress (progress_data->dialog_text));
progress_bar = gtk_builder_get_object (builder, "zenity_progress_bar");
if (progress_data->percentage > -1)
gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (progress_bar),
progress_data->percentage/100.0);
autokill = progress_data->autokill;
auto_close = progress_data->autoclose;
ok_button = gtk_builder_get_object (builder, "zenity_progress_ok_button");
no_cancel = progress_data->no_cancel;
cancel_button = gtk_builder_get_object (builder, "zenity_progress_cancel_button");
if (no_cancel) {
gtk_widget_hide (GTK_WIDGET(cancel_button));
gtk_window_set_deletable (GTK_WINDOW (dialog), FALSE);
}
if (no_cancel && auto_close)
gtk_widget_hide(GTK_WIDGET(ok_button));
zenity_util_show_dialog (dialog);
zenity_progress_read_info (progress_data);
if(data->timeout_delay > 0) {
g_timeout_add_seconds (data->timeout_delay, (GSourceFunc) zenity_util_timeout_handle, NULL);
}
gtk_main ();
}
static void
zenity_progress_dialog_response (GtkWidget *widget, int response, gpointer data)
{
switch (response) {
case GTK_RESPONSE_OK:
zen_data->exit_code = zenity_util_return_exit_code (ZENITY_OK);
break;
case GTK_RESPONSE_CANCEL:
/* We do not want to kill the parent process, in order to give the user
the ability to choose the action to be taken. See bug #310824.
But we want to give people the option to choose this behavior.
-- Monday 27, March 2006
*/
if (autokill) {
kill (getppid (), 1);
}
zen_data->exit_code = zenity_util_return_exit_code (ZENITY_CANCEL);
break;
default:
/* Esc dialog */
zen_data->exit_code = zenity_util_return_exit_code (ZENITY_ESC);
break;
}
gtk_main_quit ();
}
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