[SOLVED] load file into gtktextveiw

amboxer21 · 05-13-2012, 11:03 PM

Hey y'all I Have a UI I wrote that i am building on. Now I wanted to load a file into a gtktextview widget.

How would I go about doing this?

I have thought about loading the file into a buffer, but then I am having other issues. Maybe there is a different way? A function for just this?

Ideas? Thanks.

RockDoctor · 05-14-2012, 07:09 AM

Here's a block of code from one of my programs, basically doing what you're trying to do. I read the info into a buffer (archinfo_msg), then dump it into the textview's buffer (b)

Code:

    archinfo = os.popen(my_cmd,'r')
    line = archinfo.readline()
    while line:
      archinfo_msg = archinfo_msg+line
      line = archinfo.readline()
    b = self.archive_info.get_buffer()
    b.set_text(archinfo_msg)

amboxer21 · 05-14-2012, 12:50 PM

Quote:

Originally Posted by RockDoctor

Here's a block of code from one of my programs, basically doing what you're trying to do. I read the info into a buffer (archinfo_msg), then dump it into the textview's buffer (b)

Code:

    archinfo = os.popen(my_cmd,'r')
    line = archinfo.readline()
    while line:
      archinfo_msg = archinfo_msg+line
      line = archinfo.readline()
    b = self.archive_info.get_buffer()
    b.set_text(archinfo_msg)

Yeah, I'm working with C programming. I wish it were as easy as python makes it lol I really do! I'm pretty sure I have to keep track of iterators and a whole bunch of other nonsense.

So far I have used C to read a file into a buffer. Then a function to put that array into the GtkTextBuffer *buffer. Like I said, I most likely need to set and keep track of the iterator.

amboxer21 · 05-14-2012, 09:02 PM

So I got the textview widget to take in a file, but there are complications. It will only work if the file has characters like this

Code:

/nx/fd/ /x /g

I'm guessing I need to translate the array to UTF-8? Would this be the proper way; To convert the array to utf? Would I need to re-write my whole file to buffer function from C to gtk? How would I go about this?

UPDATE: I think i have the problem "almost" solved. I am using g_convert to convet the ascii to utf-8.

NEW CODE:

Code:

view = gtk_text_view_new();
gtk_table_attach_defaults(GTK_TABLE(table), view, 1, 9, 1, 5);
buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(view));
ch = g_strdup((gchar *)array);
UTF = g_convert(ch, strlen(ch), "UTF-8", "us-ascii", NULL, 0, &err);   
gtk_text_buffer_get_iter_at_offset(buffer, &iter, -1);
gtk_text_buffer_insert(buffer, &iter, UTF, 0);
//gtk_text_buffer_insert(buffer, &iter, "GtkTextView Widget\n", -1);
gtk_widget_show(view);

I receive this error:

Code:

(warning:6280): Gtk-CRITICAL **: IA__gtk_text_buffer_insert: assertion `text != NULL' failed

I can't figure out how to set the params of bytes_read and bytes_written in the g_convert function.

here are the relevant parts of my code:
OLD CODE:

Code:

FILE *file;
char array[4096];
gchar *text; //Not used at the moment.

gtk_init(&argc, &argv);

file = fopen("/home/amboxer21/Documents/netstat.txt", "r+");
	if(file == NULL) {
	printf("FOPEN(NULL) error --> %s.\n", strerror(errno));
	exit(EXIT_FAILURE);
	}

	if(file < 0) {
	printf("FOPEN(-1) error --> %s", strerror(errno));
	exit(EXIT_FAILURE);
	}

fread(array, sizeof(array), 1, file);
	if(fread < 0) {
	printf("FREAD(-1) error --> %s", strerror(errno));
	exit(EXIT_FAILURE);
	}

//printf("%s", array);

window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(window), "SECURITY WARNING");
gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
gtk_window_set_default_size(GTK_WINDOW(window), 500, 400);
gtk_widget_show(window);

table = gtk_table_new(10, 10, TRUE);
gtk_container_add(GTK_CONTAINER(window), table);
gtk_widget_show(table);

view = gtk_text_view_new();
gtk_table_attach_defaults(GTK_TABLE(table), view, 1, 9, 1, 5);
buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(view));
gtk_text_buffer_get_iter_at_offset(buffer, &iter, -1);
gtk_text_buffer_insert(buffer, &iter, (gchar *)array, -1);
//gtk_text_buffer_insert(buffer, &iter, "GtkTextView Widget\n", -1);
gtk_widget_show(view);

amboxer21 · 05-15-2012, 12:31 AM

UPDATE:
This way was actually wrong. It had a ton of bugs and errors! I have updated wih the actual working code.

I re-wrote my file to array function from C specific to GTK specific and it works with no problems now.

FROM THIS:

Code:

/*file = fopen("/home/amboxer21/Documents/netstat.txt", "r+");
	if(file == NULL) {
	printf("FOPEN(NULL) error --> %s.\n", strerror(errno));
	exit(EXIT_FAILURE);
	}

	if(file < 0) {
	printf("FOPEN(-1) error --> %s", strerror(errno));
	exit(EXIT_FAILURE);
	}

fread(array, sizeof(array), 1, file);
	if(fread < 0) {
	printf("FREAD(-1) error --> %s", strerror(errno));
	exit(EXIT_FAILURE);
	}*/

//printf("%s", array);

TO THIS:

Code:

array = g_array_new(FALSE, FALSE, sizeof(gint));

FILE *file = g_fopen("/home/amboxer/Documents/netstat.txt", "r+");  
	if(file == NULL) {
	printf("FOPEN(NULL) error --> %s.\n", strerror(errno));
	exit(EXIT_FAILURE);
	}

fread(array, sizeof(array), 2, file);
	if(fread < 0) {
	printf("FREAD(-1) error --> %s", strerror(errno));
	exit(EXIT_FAILURE);
	}

BAD CODE: WORKING CODE IS IN PRECEEDING POST.
The whole program:

Code:

#include <glib/gstdio.h>
#include <gtk/gtk.h>
#include <glib.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>

static void destroy_event(GtkWidget *widget, gpointer data) {
gtk_main_quit();
}

static gboolean delete_event(GtkWidget *widget, GdkEvent *event, gpointer data) {
gtk_main_quit();
return FALSE;
}

static void callback( GtkWidget *widget, gpointer data ) {
gtk_main_quit();
}

static void killed( GtkWidget *widget, GdkEvent *event, gpointer data ) {
execl("/usr/bin/killall", "killall", "watch", (char *)NULL);
gtk_main_quit();
}

//To compile append `pkg-config --cflags --libs gtk+-2.0`
int main(int argc, char *argv[]) {

GtkWidget *window;
GtkWidget *table;
GtkWidget *button;
GtkWidget *button2;
GtkWidget *frame;
GtkWidget *view;

GtkTooltips *tooltips;

GtkTextBuffer *buffer;
GtkTextIter iter;

//FILE *file;
GArray *array;
//char array[4096];
gchar *ch;
gchar *UTF;
gsize *length;
GError *err = NULL;
gsize *bytes_read = NULL; 
gsize *bytes_written = NULL;

gtk_init(&argc, &argv);

array = g_array_new(FALSE, FALSE, sizeof(gint));

FILE *file = g_fopen("/home/amboxer21/Documents/netstat.txt", "r+");  
	if(file == NULL) {
	printf("FOPEN(NULL) error --> %s.\n", strerror(errno));
	exit(EXIT_FAILURE);
	}

fread(array, sizeof(array), 2, file);
	if(fread < 0) {
	printf("FREAD(-1) error --> %s", strerror(errno));
	exit(EXIT_FAILURE);
	}

/*file = fopen("/home/amboxer21/Documents/netstat.txt", "r+");
	if(file == NULL) {
	printf("FOPEN(NULL) error --> %s.\n", strerror(errno));
	exit(EXIT_FAILURE);
	}

	if(file < 0) {
	printf("FOPEN(-1) error --> %s", strerror(errno));
	exit(EXIT_FAILURE);
	}

fread(array, sizeof(array), 1, file);
	if(fread < 0) {
	printf("FREAD(-1) error --> %s", strerror(errno));
	exit(EXIT_FAILURE);
	}*/

//printf("%s", array);

window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(window), "SECURITY WARNING");
gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
gtk_window_set_default_size(GTK_WINDOW(window), 500, 400);
gtk_widget_show(window);

table = gtk_table_new(10, 10, TRUE);
gtk_container_add(GTK_CONTAINER(window), table);
gtk_widget_show(table);

view = gtk_text_view_new();
gtk_table_attach_defaults(GTK_TABLE(table), view, 1, 9, 1, 5);
buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(view));
//ch = g_strdup((gchar *)array);
UTF = g_convert((gchar *)array, strlen((gchar *)array), "UTF-8", "us-ascii", bytes_read, bytes_written, &err);
     if (err != NULL) {
     printf("%s --> \n", strerror(errno));
     g_error_free (err);
     } 

gtk_text_buffer_get_iter_at_offset(buffer, &iter, 0);
gtk_text_buffer_set_text(buffer, UTF, strlen(UTF));
//gtk_text_buffer_insert(buffer, &iter, UTF, -1);
//gtk_text_buffer_insert(buffer, &iter, "GtkTextView Widget\n", -1);
gtk_widget_show(view);

frame = gtk_frame_new("SUSPICIOUS PORT IS OPEN");
gtk_table_attach_defaults(GTK_TABLE(table), frame, 1, 9, 1, 9);
gtk_frame_set_shadow_type(GTK_FRAME(frame), GTK_SHADOW_IN);
gtk_widget_show(frame);

button = gtk_button_new_with_label("CONFIRM");
gtk_table_attach_defaults(GTK_TABLE(table), button, 2, 5, 6, 8);
gtk_widget_show(button);

tooltips = gtk_tooltips_new();
gtk_tooltips_set_tip (tooltips, button, "Click to confirm that you understand that there are suspicious ports open on your computer.", NULL);

button2 = gtk_button_new_with_label("KILL");
gtk_table_attach_defaults(GTK_TABLE(table), button2, 5, 8, 6, 8);
gtk_widget_show(button2);

tooltips = gtk_tooltips_new();
gtk_tooltips_set_tip(tooltips, button2, "Click to stop this program entirely.", NULL);

  g_signal_connect_swapped(G_OBJECT(window), "destroy-event",
      G_CALLBACK(destroy_event), NULL);

  g_signal_connect_swapped(G_OBJECT(window), "delete-event",
      G_CALLBACK(delete_event), NULL);

  g_signal_connect(button, "clicked",
      G_CALLBACK (callback), (gpointer) "cool button");

  g_signal_connect_swapped(button2, "clicked",
      G_CALLBACK(killed), (gpointer) "killed");

gtk_main_iteration();
gtk_main();

return 0;
}

Thanks!

amboxer21 · 05-15-2012, 11:04 PM

The hard and persistent work finlly paid off! I actually removed the array and fread function. It was causing the text output in the textview widget to display/act really funky!

After 3 days on this I have finally got the darn program to work properly.

What I did:
I used iterators for point of insertion. g_fopen to open a file descriptor. get file contents to store the wanted/needed file into a string. Created the view widget. Converted the ascii file to utf-8 with g_convert. Got the off-set, then inserted the string into the buffer with the gtk_text_buffer_insert function.
----> WORKS FLAWLESSLY!!!! <----

JUST IN CASE ANYONE ELSE HAS THE SAME PROBLEM:

Code:

#include <glib/gstdio.h>
#include <gtk/gtk.h>
#include <glib.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>

static void destroy_event(GtkWidget *widget, gpointer data) {
gtk_main_quit();
}

static gboolean delete_event(GtkWidget *widget, GdkEvent *event, gpointer data) {
gtk_main_quit();
return FALSE;
}

static void callback( GtkWidget *widget, gpointer data ) {
gtk_main_quit();
}

static void killed( GtkWidget *widget, GdkEvent *event, gpointer data ) {
execl("/usr/bin/killall", "killall", "watch", (char *)NULL);
gtk_main_quit();
}

//To compile append `pkg-config --cflags --libs gtk+-2.0`
int main(int argc, char *argv[]) {

GtkWidget *window;
GtkWidget *table;
GtkWidget *button;
GtkWidget *button2;
GtkWidget *frame;
GtkWidget *view;

GtkTooltips *tooltips;

GtkTextBuffer *buffer;
GtkTextIter iter;

gchar *array;
gchar *utf8;
GError *err = NULL;
gsize *bytes_read = NULL; 
gsize *bytes_written = NULL;
gsize length;
int count = 0;
char ch;

gtk_init(&argc, &argv);

FILE *file = g_fopen("/home/annonymous/Documents/netstat2.txt", "r");  
	if(file == NULL) {
	printf("FOPEN(NULL) error --> %s.\n", strerror(errno));
	exit(EXIT_FAILURE);
	}

	if(file < 0) {
	printf("FOPEN(-1) error --> %s.\n", strerror(errno));
	exit(EXIT_FAILURE);
	}

	if(file == 0) {
	printf("FOPEN(0) error --> %s.\n", strerror(errno));
	exit(EXIT_FAILURE);
	}

	while((ch != EOF) && (ch != '\n')) {
	ch = fgetc(file);
		if(ch == '\n') {
		count++;
		}

g_file_get_contents("/home/annonymous/Documents/netstat2.txt", &array, &length, NULL);

window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(window), "SECURITY WARNING");
gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
gtk_window_set_default_size(GTK_WINDOW(window), 500, 400);
gtk_widget_show(window);

table = gtk_table_new(10, 10, TRUE);
gtk_container_add(GTK_CONTAINER(window), table);
gtk_widget_show(table);

view = gtk_text_view_new ();
gtk_table_attach_defaults(GTK_TABLE(table), view, 1, 9, 1, 5);
buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(view));		

utf8 = g_convert(array, length, "UTF-8", "us-ascii", bytes_read, bytes_written, &err);
     if (err != NULL) {
     printf("G_CONVERT(!NULL) error --> %s \n", strerror(errno));
     g_error_free(err);
     }

gtk_text_buffer_get_iter_at_offset(buffer, &iter, 0);
gtk_text_buffer_insert(buffer, &iter, utf8, -1);
//gtk_text_buffer_set_text(buffer, utf8, -1);
gtk_widget_show(view);

//gtk_text_buffer_insert(buffer, &iter, "OPEN PORTS\n", -1);

frame = gtk_frame_new("SUSPICIOUS PORT IS OPEN");
gtk_table_attach_defaults(GTK_TABLE(table), frame, 1, 9, 1, 9);
gtk_frame_set_shadow_type(GTK_FRAME(frame), GTK_SHADOW_IN);
gtk_widget_show(frame);

button = gtk_button_new_with_label("CONFIRM");
gtk_table_attach_defaults(GTK_TABLE(table), button, 2, 5, 6, 8);
gtk_widget_show(button);

tooltips = gtk_tooltips_new();
gtk_tooltips_set_tip (tooltips, button, "Click to confirm that you understand that there are suspicious ports open on your computer.", NULL);

button2 = gtk_button_new_with_label("KILL");
gtk_table_attach_defaults(GTK_TABLE(table), button2, 5, 8, 6, 8);
gtk_widget_show(button2);

tooltips = gtk_tooltips_new();
gtk_tooltips_set_tip(tooltips, button2, "Click to stop this program entirely.", NULL);

  g_signal_connect_swapped(G_OBJECT(window), "destroy-event",
      G_CALLBACK(destroy_event), NULL);

  g_signal_connect_swapped(G_OBJECT(window), "delete-event",
      G_CALLBACK(delete_event), NULL);

  g_signal_connect(button, "clicked",
      G_CALLBACK (callback), (gpointer) "cool button");

  g_signal_connect_swapped(button2, "clicked",
      G_CALLBACK(killed), (gpointer) "killed");

gtk_main_iteration();
gtk_main();

return 0;
}

Now I need to make the textview area scrollable.

THANKS TO ALL!

amboxer21 · 05-16-2012, 01:01 AM

I figured it out.

I detached the textview from the table.(Removed the highlighted in red)

Code:

view = gtk_text_view_new ();
//gtk_table_attach_defaults(GTK_TABLE(table), view, 1, 9, 2, 5);
buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(view));

And enabled the scrollable window with:

Code:

scrolledwindow = gtk_scrolled_window_new(NULL, NULL);
gtk_container_add(GTK_CONTAINER(scrolledwindow), view);
gtk_table_attach_defaults(GTK_TABLE(table), scrolledwindow, 1, 9, 2, 5);
gtk_widget_show(scrolledwindow);

Thanks all.