forked from AuroraMiddleware/gtk
a2dafdfc88
Thu Jan 28 10:16:28 GMT 1999 Tony Gale <gale@gtk.org>
* docs/gtk_tut.sgml:
- Replace all uses of deprecated functions.
- Replace menufactory example with itemfactory example
from Nick Scott <mendigo@geocities.com>
- Minor bug fixes in the examples.
279 lines
8.5 KiB
C
279 lines
8.5 KiB
C
/* example-start list list.c */
|
|
|
|
/* Include the gtk+ header files
|
|
* Include stdio.h, we need that for the printf() function
|
|
*/
|
|
#include <gtk/gtk.h>
|
|
#include <stdio.h>
|
|
|
|
/* This is our data identification string to store
|
|
* data in list items
|
|
*/
|
|
const gchar *list_item_data_key="list_item_data";
|
|
|
|
|
|
/* prototypes for signal handler that we are going to connect
|
|
* to the GtkList widget
|
|
*/
|
|
static void sigh_print_selection( GtkWidget *gtklist,
|
|
gpointer func_data);
|
|
|
|
static void sigh_button_event( GtkWidget *gtklist,
|
|
GdkEventButton *event,
|
|
GtkWidget *frame );
|
|
|
|
|
|
/* Main function to set up the user interface */
|
|
|
|
gint main (int argc,
|
|
gchar *argv[])
|
|
{
|
|
GtkWidget *separator;
|
|
GtkWidget *window;
|
|
GtkWidget *vbox;
|
|
GtkWidget *scrolled_window;
|
|
GtkWidget *frame;
|
|
GtkWidget *gtklist;
|
|
GtkWidget *button;
|
|
GtkWidget *list_item;
|
|
GList *dlist;
|
|
guint i;
|
|
gchar buffer[64];
|
|
|
|
|
|
/* Initialize gtk+ (and subsequently gdk) */
|
|
|
|
gtk_init(&argc, &argv);
|
|
|
|
|
|
/* Create a window to put all the widgets in
|
|
* connect gtk_main_quit() to the "destroy" event of
|
|
* the window to handle window manager close-window-events
|
|
*/
|
|
window=gtk_window_new(GTK_WINDOW_TOPLEVEL);
|
|
gtk_window_set_title(GTK_WINDOW(window), "GtkList Example");
|
|
gtk_signal_connect(GTK_OBJECT(window),
|
|
"destroy",
|
|
GTK_SIGNAL_FUNC(gtk_main_quit),
|
|
NULL);
|
|
|
|
|
|
/* Inside the window we need a box to arrange the widgets
|
|
* vertically */
|
|
vbox=gtk_vbox_new(FALSE, 5);
|
|
gtk_container_set_border_width(GTK_CONTAINER(vbox), 5);
|
|
gtk_container_add(GTK_CONTAINER(window), vbox);
|
|
gtk_widget_show(vbox);
|
|
|
|
/* This is the scrolled window to put the GtkList widget inside */
|
|
scrolled_window=gtk_scrolled_window_new(NULL, NULL);
|
|
gtk_widget_set_usize(scrolled_window, 250, 150);
|
|
gtk_container_add(GTK_CONTAINER(vbox), scrolled_window);
|
|
gtk_widget_show(scrolled_window);
|
|
|
|
/* Create the GtkList widget.
|
|
* Connect the sigh_print_selection() signal handler
|
|
* function to the "selection_changed" signal of the GtkList
|
|
* to print out the selected items each time the selection
|
|
* has changed */
|
|
gtklist=gtk_list_new();
|
|
gtk_scrolled_window_add_with_viewport( GTK_SCROLLED_WINDOW(scrolled_window),
|
|
gtklist);
|
|
gtk_widget_show(gtklist);
|
|
gtk_signal_connect(GTK_OBJECT(gtklist),
|
|
"selection_changed",
|
|
GTK_SIGNAL_FUNC(sigh_print_selection),
|
|
NULL);
|
|
|
|
/* We create a "Prison" to put a list item in ;) */
|
|
frame=gtk_frame_new("Prison");
|
|
gtk_widget_set_usize(frame, 200, 50);
|
|
gtk_container_set_border_width(GTK_CONTAINER(frame), 5);
|
|
gtk_frame_set_shadow_type(GTK_FRAME(frame), GTK_SHADOW_OUT);
|
|
gtk_container_add(GTK_CONTAINER(vbox), frame);
|
|
gtk_widget_show(frame);
|
|
|
|
/* Connect the sigh_button_event() signal handler to the GtkList
|
|
* which will handle the "arresting" of list items
|
|
*/
|
|
gtk_signal_connect(GTK_OBJECT(gtklist),
|
|
"button_release_event",
|
|
GTK_SIGNAL_FUNC(sigh_button_event),
|
|
frame);
|
|
|
|
/* Create a separator */
|
|
separator=gtk_hseparator_new();
|
|
gtk_container_add(GTK_CONTAINER(vbox), separator);
|
|
gtk_widget_show(separator);
|
|
|
|
/* Finally create a button and connect it's "clicked" signal
|
|
* to the destruction of the window */
|
|
button=gtk_button_new_with_label("Close");
|
|
gtk_container_add(GTK_CONTAINER(vbox), button);
|
|
gtk_widget_show(button);
|
|
gtk_signal_connect_object(GTK_OBJECT(button),
|
|
"clicked",
|
|
GTK_SIGNAL_FUNC(gtk_widget_destroy),
|
|
GTK_OBJECT(window));
|
|
|
|
|
|
/* Now we create 5 list items, each having it's own
|
|
* label and add them to the GtkList using gtk_container_add()
|
|
* Also we query the text string from the label and
|
|
* associate it with the list_item_data_key for each list item
|
|
*/
|
|
for (i=0; i<5; i++) {
|
|
GtkWidget *label;
|
|
gchar *string;
|
|
|
|
sprintf(buffer, "ListItemContainer with Label #%d", i);
|
|
label=gtk_label_new(buffer);
|
|
list_item=gtk_list_item_new();
|
|
gtk_container_add(GTK_CONTAINER(list_item), label);
|
|
gtk_widget_show(label);
|
|
gtk_container_add(GTK_CONTAINER(gtklist), list_item);
|
|
gtk_widget_show(list_item);
|
|
gtk_label_get(GTK_LABEL(label), &string);
|
|
gtk_object_set_data(GTK_OBJECT(list_item),
|
|
list_item_data_key,
|
|
string);
|
|
}
|
|
/* Here, we are creating another 5 labels, this time
|
|
* we use gtk_list_item_new_with_label() for the creation
|
|
* we can't query the text string from the label because
|
|
* we don't have the labels pointer and therefore
|
|
* we just associate the list_item_data_key of each
|
|
* list item with the same text string.
|
|
* For adding of the list items we put them all into a doubly
|
|
* linked list (GList), and then add them by a single call to
|
|
* gtk_list_append_items().
|
|
* Because we use g_list_prepend() to put the items into the
|
|
* doubly linked list, their order will be descending (instead
|
|
* of ascending when using g_list_append())
|
|
*/
|
|
dlist=NULL;
|
|
for (; i<10; i++) {
|
|
sprintf(buffer, "List Item with Label %d", i);
|
|
list_item=gtk_list_item_new_with_label(buffer);
|
|
dlist=g_list_prepend(dlist, list_item);
|
|
gtk_widget_show(list_item);
|
|
gtk_object_set_data(GTK_OBJECT(list_item),
|
|
list_item_data_key,
|
|
"ListItem with integrated Label");
|
|
}
|
|
gtk_list_append_items(GTK_LIST(gtklist), dlist);
|
|
|
|
/* Finally we want to see the window, don't we? ;) */
|
|
gtk_widget_show(window);
|
|
|
|
/* Fire up the main event loop of gtk */
|
|
gtk_main();
|
|
|
|
/* We get here after gtk_main_quit() has been called which
|
|
* happens if the main window gets destroyed
|
|
*/
|
|
return(0);
|
|
}
|
|
|
|
/* This is the signal handler that got connected to button
|
|
* press/release events of the GtkList
|
|
*/
|
|
void sigh_button_event( GtkWidget *gtklist,
|
|
GdkEventButton *event,
|
|
GtkWidget *frame )
|
|
{
|
|
/* We only do something if the third (rightmost mouse button
|
|
* was released
|
|
*/
|
|
if (event->type==GDK_BUTTON_RELEASE &&
|
|
event->button==3) {
|
|
GList *dlist, *free_list;
|
|
GtkWidget *new_prisoner;
|
|
|
|
/* Fetch the currently selected list item which
|
|
* will be our next prisoner ;)
|
|
*/
|
|
dlist=GTK_LIST(gtklist)->selection;
|
|
if (dlist)
|
|
new_prisoner=GTK_WIDGET(dlist->data);
|
|
else
|
|
new_prisoner=NULL;
|
|
|
|
/* Look for already imprisoned list items, we
|
|
* will put them back into the list.
|
|
* Remember to free the doubly linked list that
|
|
* gtk_container_children() returns
|
|
*/
|
|
dlist=gtk_container_children(GTK_CONTAINER(frame));
|
|
free_list=dlist;
|
|
while (dlist) {
|
|
GtkWidget *list_item;
|
|
|
|
list_item=dlist->data;
|
|
|
|
gtk_widget_reparent(list_item, gtklist);
|
|
|
|
dlist=dlist->next;
|
|
}
|
|
g_list_free(free_list);
|
|
|
|
/* If we have a new prisoner, remove him from the
|
|
* GtkList and put him into the frame "Prison".
|
|
* We need to unselect the item first.
|
|
*/
|
|
if (new_prisoner) {
|
|
GList static_dlist;
|
|
|
|
static_dlist.data=new_prisoner;
|
|
static_dlist.next=NULL;
|
|
static_dlist.prev=NULL;
|
|
|
|
gtk_list_unselect_child(GTK_LIST(gtklist),
|
|
new_prisoner);
|
|
gtk_widget_reparent(new_prisoner, frame);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* This is the signal handler that gets called if GtkList
|
|
* emits the "selection_changed" signal
|
|
*/
|
|
void sigh_print_selection( GtkWidget *gtklist,
|
|
gpointer func_data)
|
|
{
|
|
GList *dlist;
|
|
|
|
/* Fetch the doubly linked list of selected items
|
|
* of the GtkList, remember to treat this as read-only!
|
|
*/
|
|
dlist=GTK_LIST(gtklist)->selection;
|
|
|
|
/* If there are no selected items there is nothing more
|
|
* to do than just telling the user so
|
|
*/
|
|
if (!dlist) {
|
|
g_print("Selection cleared\n");
|
|
return;
|
|
}
|
|
/* Ok, we got a selection and so we print it
|
|
*/
|
|
g_print("The selection is a ");
|
|
|
|
/* Get the list item from the doubly linked list
|
|
* and then query the data associated with list_item_data_key.
|
|
* We then just print it */
|
|
while (dlist) {
|
|
GtkObject *list_item;
|
|
gchar *item_data_string;
|
|
|
|
list_item=GTK_OBJECT(dlist->data);
|
|
item_data_string=gtk_object_get_data(list_item,
|
|
list_item_data_key);
|
|
g_print("%s ", item_data_string);
|
|
|
|
dlist=dlist->next;
|
|
}
|
|
g_print("\n");
|
|
}
|
|
/* example-end */
|