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/* text_page.c
*
* $Id$
*
* Ulf Lamping
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
* Copyright 2000 Gerald Combs
*
* 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.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <gtk/gtk.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include "epan/filesystem.h"
#include "text_page.h"
#include "gui_utils.h"
#include "compat_macros.h"
#include "simple_dialog.h"
#include "font_utils.h"
#include "file_util.h"
#define TEXT_KEY "txt_key"
static void text_page_insert(GtkWidget *page, const char *buffer, int nchars);
static void text_page_set_text(GtkWidget *page, const char *absolute_path);
/*
* Construct a simple text page widget from a file.
*/
GtkWidget * text_page_new(const char *absolute_path)
{
GtkWidget *page_vb, *txt_scrollw, *txt;
page_vb = gtk_vbox_new(FALSE, 0);
gtk_container_border_width(GTK_CONTAINER(page_vb), 1);
txt_scrollw = scrolled_window_new(NULL, NULL);
#if GTK_MAJOR_VERSION >= 2
gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(txt_scrollw),
GTK_SHADOW_IN);
#endif
gtk_box_pack_start(GTK_BOX(page_vb), txt_scrollw, TRUE, TRUE, 0);
#if GTK_MAJOR_VERSION < 2
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(txt_scrollw),
GTK_POLICY_NEVER, GTK_POLICY_ALWAYS);
txt = gtk_text_new(NULL, NULL);
gtk_text_set_editable(GTK_TEXT(txt), FALSE);
gtk_text_set_word_wrap(GTK_TEXT(txt), TRUE);
gtk_text_set_line_wrap(GTK_TEXT(txt), TRUE);
#else
gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(txt_scrollw),
GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
txt = gtk_text_view_new();
gtk_text_view_set_editable(GTK_TEXT_VIEW(txt), FALSE);
gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(txt), GTK_WRAP_WORD);
gtk_text_view_set_cursor_visible(GTK_TEXT_VIEW(txt), FALSE);
/* XXX: there seems to be no way to add a small border *around* the whole text,
* so the text will be "bump" against the edges.
* the following is only working for left and right edges,
* there is no such thing for top and bottom :-( */
/* gtk_text_view_set_left_margin(GTK_TEXT_VIEW(txt), 3); */
/* gtk_text_view_set_right_margin(GTK_TEXT_VIEW(txt), 3); */
#endif
OBJECT_SET_DATA(page_vb, TEXT_KEY, txt);
text_page_set_text(page_vb, absolute_path);
gtk_container_add(GTK_CONTAINER(txt_scrollw), txt);
gtk_widget_show(txt_scrollw);
gtk_widget_show(txt);
return page_vb;
}
/*
* Insert some text to a text page.
*/
static void text_page_insert(GtkWidget *page, const char *buffer, int nchars)
{
GtkWidget *txt = OBJECT_GET_DATA(page, TEXT_KEY);
#if GTK_MAJOR_VERSION < 2
gtk_text_insert(GTK_TEXT(txt), user_font_get_regular(), NULL, NULL, buffer, nchars);
#else
GtkTextBuffer *buf= gtk_text_view_get_buffer(GTK_TEXT_VIEW(txt));
GtkTextIter iter;
gtk_text_buffer_get_end_iter(buf, &iter);
gtk_widget_modify_font(GTK_WIDGET(txt), user_font_get_regular());
if (!g_utf8_validate(buffer, -1, NULL))
printf("Invalid utf8 encoding: %s\n", buffer);
gtk_text_buffer_insert(buf, &iter, buffer, nchars);
#endif
}
/*
* Put the complete text file into a text page.
*/
static void text_page_set_text(GtkWidget *page, const char *absolute_path)
{
FILE *text_file;
char line[4096+1]; /* XXX - size? */
#if GTK_MAJOR_VERSION < 2
GtkText *txt = GTK_TEXT(OBJECT_GET_DATA(page, TEXT_KEY));
gtk_text_freeze(txt);
#endif
text_file = eth_fopen(absolute_path, "r");
if (text_file != NULL) {
while (fgets(line, sizeof line, text_file) != NULL) {
text_page_insert(page, line, strlen(line));
}
if(ferror(text_file)) {
simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, "Error reading file \"%s\": %s",
absolute_path, strerror(errno));
}
fclose(text_file);
} else {
simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK, "Could not open file \"%s\": %s",
absolute_path, strerror(errno));
}
#if GTK_MAJOR_VERSION < 2
gtk_text_thaw(txt);
#endif
}
/**
* Clear the text from the text page.
*/
static void text_page_clear(GtkWidget *page)
{
#if GTK_MAJOR_VERSION < 2
GtkText *txt = GTK_TEXT(OBJECT_GET_DATA(page, TEXT_KEY));
gtk_text_set_point(txt, 0);
/* Keep GTK+ 1.2.3 through 1.2.6 from dumping core - see
http://www.ethereal.com/lists/ethereal-dev/199912/msg00312.html and
http://www.gnome.org/mailing-lists/archives/gtk-devel-list/1999-October/0051.shtml
for more information */
gtk_adjustment_set_value(txt->vadj, 0.0);
gtk_text_forward_delete(txt, gtk_text_get_length(txt));
#else
GtkTextBuffer *buf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(OBJECT_GET_DATA(page, TEXT_KEY)));
gtk_text_buffer_set_text(buf, "", 0);
#endif
}
/**
* Redraw a single text page, e.g. to use a new font.
*/
void text_page_redraw(GtkWidget *page, const char *absolute_path)
{
#if GTK_MAJOR_VERSION < 2
GtkWidget *txt = OBJECT_GET_DATA(page, TEXT_KEY);
#endif
#if GTK_MAJOR_VERSION < 2
gtk_text_freeze(GTK_TEXT(txt));
#endif
text_page_clear(page);
text_page_set_text(page, absolute_path);
#if GTK_MAJOR_VERSION < 2
gtk_text_thaw(GTK_TEXT(txt));
#endif
}
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