diff options
Diffstat (limited to 'gtk/text_page.c')
| -rw-r--r-- | gtk/text_page.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/gtk/text_page.c b/gtk/text_page.c new file mode 100644 index 0000000000..5b7d2081d7 --- /dev/null +++ b/gtk/text_page.c @@ -0,0 +1,191 @@ +/* text_page.c + * + * $Id: text_page.c,v 1.1 2004/06/05 09:57:11 ulfl Exp $ + * + * 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 "gtkglobals.h" +#include "ui_util.h" +#include "compat_macros.h" +#include "simple_dialog.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), m_r_font, 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), m_r_font); + 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 = 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) +{ + GtkWidget *txt = OBJECT_GET_DATA(page, TEXT_KEY); + +#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 +} |