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gimp/app/tips_dialog.c

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/* The GIMP -- an 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <string.h>
#include "gtk/gtk.h"
#include "tips_dialog.h"
#include "gimprc.h"
#include "gimphelp.h"
#include "interface.h"
#include "wilber.h"
#include "libgimp/gimpintl.h"
#include "libgimp/gimpenv.h"
#define TIPS_DIR_NAME "tips"
static gint tips_dialog_delete (GtkWidget *widget, GdkEvent *event,
gpointer data);
static void tips_dialog_hide (GtkWidget *widget, gpointer data);
static void tips_show_previous (GtkWidget *widget, gpointer data);
static void tips_show_next (GtkWidget *widget, gpointer data);
static void tips_toggle_update (GtkWidget *widget, gpointer data);
static void read_tips_file (gchar *filename);
static GtkWidget *tips_dialog = NULL;
static GtkWidget *tips_label;
static gchar **tips_text = NULL;
static gint tips_count = 0;
static gint old_show_tips;
void
tips_dialog_create (void)
{
GtkWidget *vbox;
GtkWidget *hbox1;
GtkWidget *hbox2;
GtkWidget *bbox;
GtkWidget *vbox_bbox2;
GtkWidget *bbox2;
GtkWidget *frame;
GtkWidget *preview;
GtkWidget *button_close;
GtkWidget *button_next;
GtkWidget *button_prev;
GtkWidget *vbox_check;
GtkWidget *button_check;
gchar *temp;
guchar *utemp;
guchar *src;
guchar *dest;
gint x;
gint y;
if (tips_count == 0)
{
temp = g_strdup_printf ("%s" G_DIR_SEPARATOR_S TIPS_DIR_NAME
G_DIR_SEPARATOR_S "%s",
gimp_data_directory (),
_("gimp_tips.txt"));
read_tips_file (temp);
g_free (temp);
}
if (last_tip >= tips_count || last_tip < 0)
last_tip = 0;
if (!tips_dialog)
{
tips_dialog = gtk_window_new (GTK_WINDOW_DIALOG);
gtk_window_set_wmclass (GTK_WINDOW (tips_dialog), "tip_of_the_day", "Gimp");
gtk_window_set_title (GTK_WINDOW (tips_dialog), _("GIMP Tip of the Day"));
gtk_window_set_position (GTK_WINDOW (tips_dialog), GTK_WIN_POS_CENTER);
gtk_window_set_policy (GTK_WINDOW (tips_dialog), FALSE, FALSE, FALSE);
gtk_signal_connect (GTK_OBJECT (tips_dialog), "delete_event",
GTK_SIGNAL_FUNC (tips_dialog_delete),
NULL);
/* destroy the tips window if the mainlevel gtk_main() function is left */
gtk_quit_add_destroy (1, GTK_OBJECT (tips_dialog));
vbox = gtk_vbox_new (FALSE, 0);
gtk_container_add (GTK_CONTAINER (tips_dialog), vbox);
gtk_widget_show (vbox);
hbox1 = gtk_hbox_new (FALSE, 5);
gtk_container_set_border_width (GTK_CONTAINER (hbox1), 10);
gtk_box_pack_start (GTK_BOX (vbox), hbox1, FALSE, TRUE, 0);
gtk_widget_show (hbox1);
hbox2 = gtk_hbox_new (FALSE, 5);
gtk_container_set_border_width (GTK_CONTAINER (hbox2), 10);
gtk_box_pack_end (GTK_BOX (vbox), hbox2, FALSE, TRUE, 0);
gtk_widget_show (hbox2);
bbox = gtk_hbutton_box_new ();
gtk_box_pack_end (GTK_BOX (hbox2), bbox, FALSE, FALSE, 0);
gtk_widget_show (bbox);
vbox_bbox2 = gtk_vbox_new (FALSE, 0);
gtk_box_pack_end (GTK_BOX (hbox2), vbox_bbox2, FALSE, FALSE, 15);
gtk_widget_show (vbox_bbox2);
bbox2 = gtk_hbox_new (TRUE, 5);
gtk_box_pack_end (GTK_BOX (vbox_bbox2), bbox2, TRUE, FALSE, 0);
gtk_widget_show(bbox2);
preview = gtk_preview_new (GTK_PREVIEW_COLOR);
gtk_preview_size (GTK_PREVIEW (preview), wilber_width, wilber_height);
utemp = g_new (guchar, wilber_width * 3);
src = (guchar *)wilber_data;
for (y = 0; y < wilber_height; y++)
{
dest = utemp;
for (x = 0; x < wilber_width; x++)
{
HEADER_PIXEL(src, dest);
dest += 3;
}
gtk_preview_draw_row (GTK_PREVIEW (preview), utemp,
0, y, wilber_width);
}
g_free(utemp);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_end (GTK_BOX (hbox1), frame, FALSE, TRUE, 3);
gtk_container_add (GTK_CONTAINER (frame), preview);
gtk_widget_show (preview);
gtk_widget_show (frame);
tips_label = gtk_label_new (tips_text[last_tip]);
gtk_label_set_justify (GTK_LABEL (tips_label), GTK_JUSTIFY_LEFT);
gtk_box_pack_start (GTK_BOX (hbox1), tips_label, TRUE, TRUE, 3);
gtk_widget_show (tips_label);
button_prev = gtk_button_new_with_label (_("Previous Tip"));
GTK_WIDGET_UNSET_FLAGS (button_prev, GTK_RECEIVES_DEFAULT);
gtk_signal_connect (GTK_OBJECT (button_prev), "clicked",
GTK_SIGNAL_FUNC (tips_show_previous),
NULL);
gtk_container_add (GTK_CONTAINER (bbox2), button_prev);
gtk_widget_show (button_prev);
button_next = gtk_button_new_with_label (_("Next Tip"));
GTK_WIDGET_UNSET_FLAGS (button_next, GTK_RECEIVES_DEFAULT);
gtk_signal_connect (GTK_OBJECT (button_next), "clicked",
GTK_SIGNAL_FUNC (tips_show_next),
NULL);
gtk_container_add (GTK_CONTAINER (bbox2), button_next);
gtk_widget_show (button_next);
button_close = gtk_button_new_with_label (_("Close"));
GTK_WIDGET_SET_FLAGS (button_close, GTK_CAN_DEFAULT);
gtk_window_set_default (GTK_WINDOW (tips_dialog), button_close);
gtk_signal_connect (GTK_OBJECT (button_close), "clicked",
GTK_SIGNAL_FUNC (tips_dialog_hide),
NULL);
gtk_container_add (GTK_CONTAINER (bbox), button_close);
gtk_widget_show (button_close);
vbox_check = gtk_vbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (hbox2), vbox_check, FALSE, TRUE, 0);
gtk_widget_show (vbox_check);
button_check = gtk_check_button_new_with_label (_("Show tip next time"));
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button_check),
show_tips);
gtk_signal_connect (GTK_OBJECT (button_check), "toggled",
GTK_SIGNAL_FUNC (tips_toggle_update),
(gpointer) &show_tips);
gtk_box_pack_start (GTK_BOX (vbox_check), button_check, TRUE, FALSE, 0);
gtk_widget_show (button_check);
old_show_tips = show_tips;
/* Connect the "F1" help key */
gimp_help_connect_help_accel (tips_dialog,
gimp_standard_help_func,
"dialogs/tip_of_the_day.html");
}
if (!GTK_WIDGET_VISIBLE (tips_dialog))
{
gtk_widget_show (tips_dialog);
}
else
{
gdk_window_raise (tips_dialog->window);
}
}
static gint
tips_dialog_delete (GtkWidget *widget,
GdkEvent *event,
gpointer data)
{
tips_dialog_hide (NULL, NULL);
return TRUE;
}
static void
tips_dialog_hide (GtkWidget *widget,
gpointer data)
{
GList *update = NULL; /* options that should be updated in .gimprc */
GList *remove = NULL; /* options that should be commented out */
gtk_widget_hide (tips_dialog);
/* the last-shown-tip is now saved in sessionrc */
if (show_tips != old_show_tips)
{
update = g_list_append (update, "show-tips");
remove = g_list_append (remove, "dont-show-tips");
old_show_tips = show_tips;
save_gimprc (&update, &remove);
}
g_list_free (update);
g_list_free (remove);
}
static void
tips_show_previous (GtkWidget *widget,
gpointer data)
{
last_tip--;
if (last_tip < 0)
last_tip = tips_count - 1;
gtk_label_set (GTK_LABEL (tips_label), tips_text[last_tip]);
}
static void
tips_show_next (GtkWidget *widget,
gpointer data)
{
last_tip++;
if (last_tip >= tips_count)
last_tip = 0;
gtk_label_set (GTK_LABEL (tips_label), tips_text[last_tip]);
}
static void
tips_toggle_update (GtkWidget *widget,
gpointer data)
{
gint *toggle_val;
toggle_val = (gint *) data;
if (GTK_TOGGLE_BUTTON (widget)->active)
*toggle_val = TRUE;
else
*toggle_val = FALSE;
}
static void
store_tip (gchar *str)
{
tips_count++;
tips_text = g_realloc (tips_text, sizeof (gchar *) * tips_count);
tips_text[tips_count - 1] = str;
}
static void
read_tips_file (gchar *filename)
{
FILE *fp;
gchar *tip = NULL;
gchar *str = NULL;
fp = fopen (filename, "rt");
if (!fp)
{
store_tip (_("Your GIMP tips file appears to be missing!\n"
"There should be a file called gimp_tips.txt in the\n"
"GIMP data directory. Please check your installation."));
return;
}
str = g_new (char, 1024);
while (!feof (fp))
{
if (!fgets (str, 1024, fp))
continue;
if (str[0] == '#' || str[0] == '\n')
{
if (tip != NULL)
{
tip[strlen (tip) - 1] = '\000';
store_tip (tip);
tip = NULL;
}
}
else
{
if (tip == NULL)
{
tip = g_malloc (strlen (str) + 1);
strcpy (tip, str);
}
else
{
tip = g_realloc (tip, strlen (tip) + strlen (str) + 1);
strcat (tip, str);
}
}
}
if (tip != NULL)
store_tip (tip);
g_free (str);
fclose (fp);
}
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