two guys wrote the majority of this gtk widget code. it is
meant for the speech-impaired or mute. they type into the
editor spawned by gvim or kate, and when the file is written a
speech tool of the linux box is their voice. i keep track
of the file by "inc" or "dec" in case somebody they are
talking too didn't hear or understand part of the
conversation. if the user is a slow typist and has written
a few paragraphs, he just looks back and forth thru the
files to find the one that his friends want to hear again.
i'll need a play button and callback that invokes, say,
espeak -f on that file.
if this much makes sense, below in the C code.
tia for any insights.
cheers,
gary kline
--
Gary Kline kl...@thought.org http://www.thought.org Public Service Unix
Journey Toward the Dawn, E-Book: http://www.thought.org
The 8.57a release of Jottings: http://jottings.thought.org
Twenty-five years of service to the Unix community.
/*
*
* gcc -Wall -Wextra -Werror -g y.c -o y1 `pkg-config --cflags gtk+-2.0`
`pkg-config --libs gtk+-2.0`
*
*/
#include <gtk/gtk.h>
#include <string.h>
#define DEFAULT "talk."
static int counter = 0;
static GtkWidget *label;
static char *suffix = ".txt";
static char *prefix = DEFAULT;
static void
update_label(void)
{
char buffer[1024];
memset(&buffer, 0, sizeof buffer);
/*If counter is 1, use markup to highlight text*/
if(counter >= 0 )
{
if(prefix)
g_snprintf(buffer, 1023, "<span foreground=\"red\"
background=\"yellow\" size=\"x-large\">%s%d%s</span>",prefix, counter, suffix);
else
g_snprintf(buffer, 1023, "<span foreground=\"red\"
background=\"yellow\" size=\"x-large\">%d%s</span>", counter, suffix);
gtk_label_set_markup(GTK_LABEL(label), buffer);
}
else
{
if(prefix)
g_snprintf(buffer, 1023, "%s%d%s", prefix, counter, suffix);
else
g_snprintf(buffer, 1023, "%d%s", counter, suffix);
gtk_label_set_label(GTK_LABEL(label), buffer);
}
}
static void
inc_button_click_cb(GtkButton *button, gpointer data)
{
(void)button;
GtkWidget *dec_button = data;
counter++;
/* Change senstivity of the decrement button based on counter*/
if(counter > 0 && !gtk_widget_is_sensitive(dec_button))
gtk_widget_set_sensitive(dec_button, TRUE);
/* Update label to show updated counter */
update_label();
return;
}
static void
dec_button_click_cb(GtkButton *button, gpointer data)
{
(void)data;
counter--;
if (counter < 0)
{
counter = 0;
}
/* Change senstivity of the decrement button based on counter*/
if(counter < 1 && gtk_widget_is_sensitive(GTK_WIDGET(button)))
gtk_widget_set_sensitive(GTK_WIDGET(button), FALSE);
/* Update label to show updated counter */
update_label();
return;
}
static void
entry_changed_cb(GtkEditable *editable, gpointer data)
{
(void)data;
/* Caller has to free the text, so call g_free */
g_free(prefix);
/* Get the complete text */
prefix=gtk_editable_get_chars(editable,0, -1);
/* Update label to show updated prefix */
update_label();
return;
}
int main(void)
{
GtkWidget *button_inc;
GtkWidget *button_dec;
GtkWidget *entry_label;
GtkWidget *entry;
GtkWidget *window;
GtkWidget *vbox;
gtk_init(NULL, NULL);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
gtk_window_set_title(GTK_WINDOW(window), "TalkByComputer");
gtk_container_set_border_width(GTK_CONTAINER(window), 10);
g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);
vbox = gtk_vbox_new(FALSE, 5);
gtk_container_add(GTK_CONTAINER(window), vbox);
label = gtk_label_new("");
update_label();
button_dec = gtk_button_new_with_label("Decrease counter");
g_signal_connect(button_dec, "clicked", G_CALLBACK(dec_button_click_cb),
NULL);
gtk_widget_set_sensitive(button_dec, FALSE);
button_inc = gtk_button_new_with_label("Increase counter");
g_signal_connect(button_inc, "clicked", G_CALLBACK(inc_button_click_cb),
button_dec);
entry_label = gtk_label_new("Type the filename in the space below:");
entry = gtk_entry_new();
g_signal_connect(entry,"changed", G_CALLBACK(entry_changed_cb), NULL);
gtk_box_pack_start(GTK_BOX(vbox), label, 0, 0, 0);
gtk_box_pack_start(GTK_BOX(vbox), button_inc, 0, 0, 0);
gtk_box_pack_start(GTK_BOX(vbox), button_dec, 0, 0, 0);
gtk_box_pack_start(GTK_BOX(vbox), entry_label, 0, 0, 0);
gtk_box_pack_start(GTK_BOX(vbox), entry, 0, 0, 0);
gtk_widget_show_all(window);
gtk_main();
g_free(prefix);
return 0;
}
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