/* example-start progressbar progressbar.c */
#include <gtk/gtk.h>
typedef struct _ProgressData {
GtkWidget *window;
GtkWidget *pbar;
int timer;
} ProgressData;
/* Update the value of the progress bar so that we get
* some movement */
gint progress_timeout( gpointer data )
{
gfloat new_val;
GtkAdjustment *adj;
/* Calculate the value of the progress bar using the
* value range set in the adjustment object */
new_val = gtk_progress_get_value( GTK_PROGRESS(data) ) + 1;
adj = GTK_PROGRESS (data)->adjustment;
if (new_val > adj->upper)
new_val = adj->lower;
/* Set the new value */
gtk_progress_set_value (GTK_PROGRESS (data), new_val);
/* As this is a timeout function, return TRUE so that it
* continues to get called */
return(TRUE);
}
/* Callback that toggles the text display within the progress
* bar trough */
void toggle_show_text( GtkWidget *widget,
ProgressData *pdata )
{
gtk_progress_set_show_text (GTK_PROGRESS (pdata->pbar),
GTK_TOGGLE_BUTTON (widget)->active);
}
/* Callback that toggles the activity mode of the progress
* bar */
void toggle_activity_mode( GtkWidget *widget,
ProgressData *pdata )
{
gtk_progress_set_activity_mode (GTK_PROGRESS (pdata->pbar),
GTK_TOGGLE_BUTTON (widget)->active);
}
/* Callback that toggles the continuous mode of the progress
* bar */
void set_continuous_mode( GtkWidget *widget,
ProgressData *pdata )
{
gtk_progress_bar_set_bar_style (GTK_PROGRESS_BAR (pdata->pbar),
GTK_PROGRESS_CONTINUOUS);
}
/* Callback that toggles the discrete mode of the progress
* bar */
void set_discrete_mode( GtkWidget *widget,
ProgressData *pdata )
{
gtk_progress_bar_set_bar_style (GTK_PROGRESS_BAR (pdata->pbar),
GTK_PROGRESS_DISCRETE);
}
/* Clean up allocated memory and remove the timer */
void destroy_progress( GtkWidget *widget,
ProgressData *pdata)
{
gtk_timeout_remove (pdata->timer);
pdata->timer = 0;
pdata->window = NULL;
g_free(pdata);
gtk_main_quit();
}
int main( int argc,
char *argv[])
{
ProgressData *pdata;
GtkWidget *align;
GtkWidget *separator;
GtkWidget *table;
GtkAdjustment *adj;
GtkWidget *button;
GtkWidget *check;
GtkWidget *vbox;
gtk_init (&argc, &argv);
/* Allocate memory for the data that is passwd to the callbacks */
pdata = g_malloc( sizeof(ProgressData) );
pdata->window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_policy (GTK_WINDOW (pdata->window), FALSE, FALSE, TRUE);
gtk_signal_connect (GTK_OBJECT (pdata->window), "destroy",
GTK_SIGNAL_FUNC (destroy_progress),
pdata);
gtk_window_set_title (GTK_WINDOW (pdata->window), "GtkProgressBar");
gtk_container_set_border_width (GTK_CONTAINER (pdata->window), 0);
vbox = gtk_vbox_new (FALSE, 5);
gtk_container_set_border_width (GTK_CONTAINER (vbox), 10);
gtk_container_add (GTK_CONTAINER (pdata->window), vbox);
gtk_widget_show(vbox);
/* Create a centering alignment object */
align = gtk_alignment_new (0.5, 0.5, 0, 0);
gtk_box_pack_start (GTK_BOX (vbox), align, FALSE, FALSE, 5);
gtk_widget_show(align);
/* Create a Adjusment object to hold the range of the
* progress bar */
adj = (GtkAdjustment *) gtk_adjustment_new (0, 1, 150, 0, 0, 0);
/* Create the GtkProgressBar using the adjustment */
pdata->pbar = gtk_progress_bar_new_with_adjustment (adj);
/* Set the format of the string that can be displayed in the
* trough of the progress bar:
* %p - percentage
* %v - value
* %l - lower range value
* %u - upper range value */
gtk_progress_set_format_string (GTK_PROGRESS (pdata->pbar),
"%v from [%l-%u] (=%p%%)");
gtk_container_add (GTK_CONTAINER (align), pdata->pbar);
gtk_widget_show(pdata->pbar);
/* Add a timer callback to update the value of the progress bar */
pdata->timer = gtk_timeout_add (100, progress_timeout, pdata->pbar);
separator = gtk_hseparator_new ();
gtk_box_pack_start (GTK_BOX (vbox), separator, FALSE, FALSE, 0);
gtk_widget_show(separator);
/* rows, columns, homogeneous */
table = gtk_table_new (2, 3, FALSE);
gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, TRUE, 0);
gtk_widget_show(table);
/* Add a check button to select displaying of the trough text */
check = gtk_check_button_new_with_label ("Show text");
gtk_table_attach (GTK_TABLE (table), check, 0, 1, 0, 1,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL,
5, 5);
gtk_signal_connect (GTK_OBJECT (check), "clicked",
GTK_SIGNAL_FUNC (toggle_show_text),
pdata);
gtk_widget_show(check);
/* Add a check button to toggle activity mode */
check = gtk_check_button_new_with_label ("Activity mode");
gtk_table_attach (GTK_TABLE (table), check, 0, 1, 1, 2,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL,
5, 5);
gtk_signal_connect (GTK_OBJECT (check), "clicked",
GTK_SIGNAL_FUNC (toggle_activity_mode),
pdata);
gtk_widget_show(check);
separator = gtk_vseparator_new ();
gtk_table_attach (GTK_TABLE (table), separator, 1, 2, 0, 2,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL,
5, 5);
gtk_widget_show(separator);
/* Add a radio button to select continuous display mode */
button = gtk_radio_button_new_with_label (NULL, "Continuous");
gtk_table_attach (GTK_TABLE (table), button, 2, 3, 0, 1,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL,
5, 5);
gtk_signal_connect (GTK_OBJECT (button), "clicked",
GTK_SIGNAL_FUNC (set_continuous_mode),
pdata);
gtk_widget_show (button);
/* Add a radio button to select discrete display mode */
button = gtk_radio_button_new_with_label(
gtk_radio_button_group (GTK_RADIO_BUTTON (button)),
"Discrete");
gtk_table_attach (GTK_TABLE (table), button, 2, 3, 1, 2,
GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL,
5, 5);
gtk_signal_connect (GTK_OBJECT (button), "clicked",
GTK_SIGNAL_FUNC (set_discrete_mode),
pdata);
gtk_widget_show (button);
separator = gtk_hseparator_new ();
gtk_box_pack_start (GTK_BOX (vbox), separator, FALSE, FALSE, 0);
gtk_widget_show(separator);
/* Add a button to exit the program */
button = gtk_button_new_with_label ("close");
gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
(GtkSignalFunc) gtk_widget_destroy,
GTK_OBJECT (pdata->window));
gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
/* This makes it so the button is the default. */
GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
/* This grabs this button to be the default button. Simply hitting
* the "Enter" key will cause this button to activate. */
gtk_widget_grab_default (button);
gtk_widget_show(button);
gtk_widget_show (pdata->window);
gtk_main ();
return(0);
}
/* example-end */