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3821880398
Thu Dec 10 17:58:49 GMT 1998 Tony Gale <gale@gtk.org>
* docs/gtk_tut.sgml:
- re-write the GtkProgressBar section to the 1.1 API.
- add an Appendix listing all the signals
(apologies to TimJ for taking so long in using his hard work
in automating the extraction - thanx Tim).
* examples/*: bring them all upto the tutorial versions
221 lines
7.4 KiB
C
221 lines
7.4 KiB
C
/* example-start progressbar progressbar.c */
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#include <gtk/gtk.h>
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typedef struct _ProgressData {
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GtkWidget *window;
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GtkWidget *pbar;
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int timer;
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} ProgressData;
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/* Update the value of the progress bar so that we get
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* some movement */
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gint progress_timeout( gpointer data )
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{
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gfloat new_val;
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GtkAdjustment *adj;
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adj = GTK_PROGRESS (data)->adjustment;
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/* Calculate the value of the progress bar using the
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* value range set in the adjustment object */
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new_val = adj->value + 1;
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if (new_val > adj->upper)
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new_val = adj->lower;
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/* Set the new value */
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gtk_progress_set_value (GTK_PROGRESS (data), new_val);
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/* As this is a timeout function, return TRUE so that it
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* continues to get called */
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return(TRUE);
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}
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/* Callback that toggles the text display within the progress
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* bar trough */
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void toggle_show_text( GtkWidget *widget,
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ProgressData *pdata )
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{
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gtk_progress_set_show_text (GTK_PROGRESS (pdata->pbar),
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GTK_TOGGLE_BUTTON (widget)->active);
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}
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/* Callback that toggles the activity mode of the progress
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* bar */
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void toggle_activity_mode( GtkWidget *widget,
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ProgressData *pdata )
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{
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gtk_progress_set_activity_mode (GTK_PROGRESS (pdata->pbar),
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GTK_TOGGLE_BUTTON (widget)->active);
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}
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/* Callback that toggles the continuous mode of the progress
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* bar */
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void set_continuous_mode( GtkWidget *widget,
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ProgressData *pdata )
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{
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gtk_progress_bar_set_bar_style (GTK_PROGRESS_BAR (pdata->pbar),
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GTK_PROGRESS_CONTINUOUS);
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}
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/* Callback that toggles the discrete mode of the progress
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* bar */
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void set_discrete_mode( GtkWidget *widget,
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ProgressData *pdata )
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{
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gtk_progress_bar_set_bar_style (GTK_PROGRESS_BAR (pdata->pbar),
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GTK_PROGRESS_DISCRETE);
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}
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/* Clean up allocated memory and remove the timer */
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void destroy_progress( GtkWidget *widget,
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ProgressData *pdata)
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{
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gtk_timeout_remove (pdata->timer);
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pdata->timer = 0;
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pdata->window = NULL;
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g_free(pdata);
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gtk_main_quit();
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}
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int main( int argc,
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char *argv[])
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{
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ProgressData *pdata;
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GtkWidget *align;
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GtkWidget *separator;
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GtkWidget *table;
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GtkAdjustment *adj;
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GtkWidget *button;
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GtkWidget *check;
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GtkWidget *vbox;
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gtk_init (&argc, &argv);
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/* Allocate memory for the data that is passwd to the callbacks */
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pdata = g_malloc( sizeof(ProgressData) );
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pdata->window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
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gtk_window_set_policy (GTK_WINDOW (pdata->window), FALSE, FALSE, TRUE);
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gtk_signal_connect (GTK_OBJECT (pdata->window), "destroy",
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GTK_SIGNAL_FUNC (destroy_progress),
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pdata);
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gtk_window_set_title (GTK_WINDOW (pdata->window), "GtkProgressBar");
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gtk_container_set_border_width (GTK_CONTAINER (pdata->window), 0);
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vbox = gtk_vbox_new (FALSE, 5);
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gtk_container_set_border_width (GTK_CONTAINER (vbox), 10);
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gtk_container_add (GTK_CONTAINER (pdata->window), vbox);
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gtk_widget_show(vbox);
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/* Create a centering alignment object */
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align = gtk_alignment_new (0.5, 0.5, 0, 0);
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gtk_box_pack_start (GTK_BOX (vbox), align, FALSE, FALSE, 5);
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gtk_widget_show(align);
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/* Create a GtkAdjusment object to hold the range of the
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* progress bar */
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adj = (GtkAdjustment *) gtk_adjustment_new (0, 1, 150, 0, 0, 0);
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/* Create the GtkProgressBar using the adjustment */
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pdata->pbar = gtk_progress_bar_new_with_adjustment (adj);
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/* Set the format of the string that can be displayed in the
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* trough of the progress bar:
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* %p - percentage
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* %v - value
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* %l - lower range value
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* %u - upper range value */
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gtk_progress_set_format_string (GTK_PROGRESS (pdata->pbar),
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"%v from [%l-%u] (=%p%%)");
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gtk_container_add (GTK_CONTAINER (align), pdata->pbar);
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gtk_widget_show(pdata->pbar);
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/* Add a timer callback to update the value of the progress bar */
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pdata->timer = gtk_timeout_add (100, progress_timeout, pdata->pbar);
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separator = gtk_hseparator_new ();
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gtk_box_pack_start (GTK_BOX (vbox), separator, FALSE, FALSE, 0);
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gtk_widget_show(separator);
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/* rows, columns, homogeneous */
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table = gtk_table_new (2, 3, FALSE);
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gtk_box_pack_start (GTK_BOX (vbox), table, FALSE, TRUE, 0);
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gtk_widget_show(table);
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/* Add a check button to select displaying of the trough text */
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check = gtk_check_button_new_with_label ("Show text");
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gtk_table_attach (GTK_TABLE (table), check, 0, 1, 0, 1,
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GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL,
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5, 5);
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gtk_signal_connect (GTK_OBJECT (check), "clicked",
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GTK_SIGNAL_FUNC (toggle_show_text),
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pdata);
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gtk_widget_show(check);
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/* Add a check button to toggle activity mode */
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check = gtk_check_button_new_with_label ("Activity mode");
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gtk_table_attach (GTK_TABLE (table), check, 0, 1, 1, 2,
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GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL,
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5, 5);
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gtk_signal_connect (GTK_OBJECT (check), "clicked",
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GTK_SIGNAL_FUNC (toggle_activity_mode),
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pdata);
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gtk_widget_show(check);
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separator = gtk_vseparator_new ();
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gtk_table_attach (GTK_TABLE (table), separator, 1, 2, 0, 2,
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GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL,
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5, 5);
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gtk_widget_show(separator);
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/* Add a radio button to select continuous display mode */
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button = gtk_radio_button_new_with_label (NULL, "Continuous");
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gtk_table_attach (GTK_TABLE (table), button, 2, 3, 0, 1,
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GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL,
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5, 5);
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gtk_signal_connect (GTK_OBJECT (button), "clicked",
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GTK_SIGNAL_FUNC (set_continuous_mode),
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pdata);
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gtk_widget_show (button);
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/* Add a radio button to select discrete display mode */
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button = gtk_radio_button_new_with_label(
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gtk_radio_button_group (GTK_RADIO_BUTTON (button)),
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"Discrete");
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gtk_table_attach (GTK_TABLE (table), button, 2, 3, 1, 2,
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GTK_EXPAND | GTK_FILL, GTK_EXPAND | GTK_FILL,
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5, 5);
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gtk_signal_connect (GTK_OBJECT (button), "clicked",
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GTK_SIGNAL_FUNC (set_discrete_mode),
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pdata);
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gtk_widget_show (button);
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separator = gtk_hseparator_new ();
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gtk_box_pack_start (GTK_BOX (vbox), separator, FALSE, FALSE, 0);
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gtk_widget_show(separator);
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/* Add a button to exit the program */
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button = gtk_button_new_with_label ("close");
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gtk_signal_connect_object (GTK_OBJECT (button), "clicked",
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(GtkSignalFunc) gtk_widget_destroy,
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GTK_OBJECT (pdata->window));
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gtk_box_pack_start (GTK_BOX (vbox), button, FALSE, FALSE, 0);
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/* This makes it so the button is the default. */
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GTK_WIDGET_SET_FLAGS (button, GTK_CAN_DEFAULT);
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/* This grabs this button to be the default button. Simply hitting
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* the "Enter" key will cause this button to activate. */
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gtk_widget_grab_default (button);
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gtk_widget_show(button);
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gtk_widget_show (pdata->window);
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gtk_main ();
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return(0);
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}
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/* example-end */
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