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gimp/app/dialogs/tips-dialog.c

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/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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 <gtk/gtk.h>
#include "libgimpbase/gimpbase.h"
#include "libgimpwidgets/gimpwidgets.h"
#include "dialogs-types.h"
#include "config/gimpguiconfig.h"
#include "core/gimp.h"
#include "widgets/gimphelp-ids.h"
#include "tips-dialog.h"
#include "tips-parser.h"
#include "gimp-intl.h"
enum
{
RESPONSE_PREVIOUS = 1,
RESPONSE_NEXT = 2
};
static void tips_dialog_set_tip (GimpTip *tip);
static void tips_dialog_response (GtkWidget *dialog,
gint response);
static void tips_dialog_destroy (GtkWidget *widget,
GimpGuiConfig *config);
static void more_button_clicked (GtkWidget *button,
Gimp *gimp);
static GtkWidget *tips_dialog = NULL;
static GtkWidget *tip_label = NULL;
static GtkWidget *more_button = NULL;
static GList *tips = NULL;
static GList *current_tip = NULL;
GtkWidget *
tips_dialog_create (Gimp *gimp)
{
GimpGuiConfig *config;
GtkWidget *vbox;
GtkWidget *hbox;
GtkWidget *button;
GtkWidget *image;
gint tips_count;
g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);
if (!tips)
{
GError *error = NULL;
gchar *filename;
filename = g_build_filename (gimp_data_directory (), "tips",
"gimp-tips.xml", NULL);
tips = gimp_tips_from_file (filename, &error);
if (! tips)
{
GimpTip *tip;
if (! error)
{
tip = gimp_tip_new (_("The GIMP tips file is empty!"), NULL);
}
else if (error->code == G_FILE_ERROR_NOENT)
{
tip = gimp_tip_new (_("The GIMP tips file appears to be "
"missing!"),
_("There should be a file called '%s'. "
"Please check your installation."),
gimp_filename_to_utf8 (filename));
}
else
{
tip = gimp_tip_new (_("The GIMP tips file could not be parsed!"),
"%s", error->message);
}
tips = g_list_prepend (tips, tip);
}
else if (error)
{
g_printerr ("Error while parsing '%s': %s\n",
filename, error->message);
}
g_clear_error (&error);
g_free (filename);
}
tips_count = g_list_length (tips);
config = GIMP_GUI_CONFIG (gimp->config);
if (config->last_tip >= tips_count || config->last_tip < 0)
config->last_tip = 0;
current_tip = g_list_nth (tips, config->last_tip);
if (tips_dialog)
return tips_dialog;
tips_dialog = gimp_dialog_new (_("GIMP Tip of the Day"),
"gimp-tip-of-the-day",
NULL, 0, NULL, NULL,
NULL);
button = gtk_dialog_add_button (GTK_DIALOG (tips_dialog),
_("_Previous Tip"), RESPONSE_PREVIOUS);
gtk_button_set_image (GTK_BUTTON (button),
gtk_image_new_from_stock (GTK_STOCK_GO_BACK,
GTK_ICON_SIZE_BUTTON));
button = gtk_dialog_add_button (GTK_DIALOG (tips_dialog),
_("_Next Tip"), RESPONSE_NEXT);
gtk_button_set_image (GTK_BUTTON (button),
gtk_image_new_from_stock (GTK_STOCK_GO_FORWARD,
GTK_ICON_SIZE_BUTTON));
gtk_dialog_set_response_sensitive (GTK_DIALOG (tips_dialog),
RESPONSE_NEXT, tips_count > 1);
gtk_dialog_set_response_sensitive (GTK_DIALOG (tips_dialog),
RESPONSE_PREVIOUS, tips_count > 1);
g_signal_connect (tips_dialog, "response",
G_CALLBACK (tips_dialog_response),
NULL);
g_signal_connect (tips_dialog, "destroy",
G_CALLBACK (tips_dialog_destroy),
config);
vbox = gtk_vbox_new (FALSE, 12);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (tips_dialog))),
vbox, TRUE, TRUE, 0);
gtk_widget_show (vbox);
hbox = gtk_hbox_new (FALSE, 6);
gtk_container_set_border_width (GTK_CONTAINER (hbox), 6);
gtk_box_pack_start (GTK_BOX (vbox), hbox, TRUE, TRUE, 0);
gtk_widget_show (hbox);
vbox = gtk_vbox_new (FALSE, 6);
gtk_box_pack_start (GTK_BOX (hbox), vbox, TRUE, TRUE, 0);
gtk_widget_show (vbox);
image = gtk_image_new_from_stock (GIMP_STOCK_INFO, GTK_ICON_SIZE_DIALOG);
gtk_misc_set_alignment (GTK_MISC (image), 0.5, 0.0);
gtk_box_pack_start (GTK_BOX (hbox), image, FALSE, FALSE, 0);
gtk_widget_show (image);
gtk_container_set_focus_chain (GTK_CONTAINER (hbox), NULL);
tip_label = gtk_label_new (NULL);
gtk_label_set_selectable (GTK_LABEL (tip_label), TRUE);
gtk_label_set_justify (GTK_LABEL (tip_label), GTK_JUSTIFY_LEFT);
gtk_label_set_line_wrap (GTK_LABEL (tip_label), TRUE);
gtk_misc_set_alignment (GTK_MISC (tip_label), 0.5, 0.0);
gtk_box_pack_start (GTK_BOX (vbox), tip_label, TRUE, TRUE, 0);
gtk_widget_show (tip_label);
hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
gtk_widget_show (hbox);
more_button = gtk_link_button_new_with_label ("http://docs.gimp.org/",
/* a link to the related section in the user manual */
_("Learn more"));
gtk_widget_show (more_button);
gtk_box_pack_start (GTK_BOX (hbox), more_button, FALSE, FALSE, 0);
g_signal_connect (more_button, "clicked",
G_CALLBACK (more_button_clicked),
gimp);
tips_dialog_set_tip (current_tip->data);
return tips_dialog;
}
static void
tips_dialog_destroy (GtkWidget *widget,
GimpGuiConfig *config)
{
/* the last-shown-tip is saved in sessionrc */
config->last_tip = g_list_position (tips, current_tip);
tips_dialog = NULL;
current_tip = NULL;
gimp_tips_free (tips);
tips = NULL;
}
static void
tips_dialog_response (GtkWidget *dialog,
gint response)
{
switch (response)
{
case RESPONSE_PREVIOUS:
current_tip = current_tip->prev ? current_tip->prev : g_list_last (tips);
tips_dialog_set_tip (current_tip->data);
break;
case RESPONSE_NEXT:
current_tip = current_tip->next ? current_tip->next : tips;
tips_dialog_set_tip (current_tip->data);
break;
default:
gtk_widget_destroy (dialog);
break;
}
}
static void
tips_dialog_set_tip (GimpTip *tip)
{
g_return_if_fail (tip != NULL);
gtk_label_set_markup (GTK_LABEL (tip_label), tip->text);
/* set the URI to unset the "visited" state */
gtk_link_button_set_uri (GTK_LINK_BUTTON (more_button),
"http://docs.gimp.org/");
gtk_widget_set_sensitive (more_button, tip->help_id != NULL);
}
static void
more_button_clicked (GtkWidget *button,
Gimp *gimp)
{
GimpTip *tip = current_tip->data;
if (tip->help_id)
gimp_help (gimp, NULL, NULL, tip->help_id);
}
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