367 lines
8.8 KiB
C
367 lines
8.8 KiB
C
// 23 april 2015
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#include "uipriv_unix.h"
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static GArray *menus = NULL;
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static gboolean menusFinalized = FALSE;
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static gboolean hasQuit = FALSE;
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static gboolean hasPreferences = FALSE;
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static gboolean hasAbout = FALSE;
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struct uiMenu {
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char *name;
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GArray *items; // []*uiMenuItem
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};
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struct uiMenuItem {
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char *name;
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int type;
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void (*onClicked)(uiMenuItem *, uiWindow *, void *);
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void *onClickedData;
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GType gtype; // template for new instances; kept in sync with everything else
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gboolean disabled;
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gboolean checked;
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GHashTable *windows; // map[GtkMenuItem]*menuItemWindow
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};
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struct menuItemWindow {
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uiWindow *w;
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gulong signal;
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};
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enum {
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typeRegular,
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typeCheckbox,
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typeQuit,
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typePreferences,
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typeAbout,
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typeSeparator,
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};
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// we do NOT want programmatic updates to raise an ::activated signal
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static void singleSetChecked(GtkCheckMenuItem *menuitem, gboolean checked, gulong signal)
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{
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g_signal_handler_block(menuitem, signal);
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gtk_check_menu_item_set_active(menuitem, checked);
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g_signal_handler_unblock(menuitem, signal);
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}
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static void setChecked(uiMenuItem *item, gboolean checked)
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{
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GHashTableIter iter;
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gpointer widget;
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gpointer ww;
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struct menuItemWindow *w;
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item->checked = checked;
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g_hash_table_iter_init(&iter, item->windows);
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while (g_hash_table_iter_next(&iter, &widget, &ww)) {
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w = (struct menuItemWindow *) ww;
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singleSetChecked(GTK_CHECK_MENU_ITEM(widget), item->checked, w->signal);
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}
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}
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static void onClicked(GtkMenuItem *menuitem, gpointer data)
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{
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uiMenuItem *item = uiMenuItem(data);
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struct menuItemWindow *w;
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// we need to manually update the checked states of all menu items if one changes
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// notice that this is getting the checked state of the menu item that this signal is sent from
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if (item->type == typeCheckbox)
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setChecked(item, gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(menuitem)));
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w = (struct menuItemWindow *) g_hash_table_lookup(item->windows, menuitem);
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(*(item->onClicked))(item, w->w, item->onClickedData);
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}
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static void defaultOnClicked(uiMenuItem *item, uiWindow *w, void *data)
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{
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// do nothing
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}
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static void onQuitClicked(uiMenuItem *item, uiWindow *w, void *data)
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{
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if (uiprivShouldQuit())
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uiQuit();
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}
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static void menuItemEnableDisable(uiMenuItem *item, gboolean enabled)
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{
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GHashTableIter iter;
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gpointer widget;
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item->disabled = !enabled;
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g_hash_table_iter_init(&iter, item->windows);
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while (g_hash_table_iter_next(&iter, &widget, NULL))
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gtk_widget_set_sensitive(GTK_WIDGET(widget), enabled);
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}
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void uiMenuItemEnable(uiMenuItem *item)
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{
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menuItemEnableDisable(item, TRUE);
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}
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void uiMenuItemDisable(uiMenuItem *item)
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{
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menuItemEnableDisable(item, FALSE);
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}
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void uiMenuItemOnClicked(uiMenuItem *item, void (*f)(uiMenuItem *, uiWindow *, void *), void *data)
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{
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if (item->type == typeQuit)
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uiprivUserBug("You cannot call uiMenuItemOnClicked() on a Quit item; use uiOnShouldQuit() instead.");
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item->onClicked = f;
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item->onClickedData = data;
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}
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int uiMenuItemChecked(uiMenuItem *item)
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{
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return item->checked != FALSE;
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}
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void uiMenuItemSetChecked(uiMenuItem *item, int checked)
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{
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gboolean c;
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// use explicit values
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c = FALSE;
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if (checked)
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c = TRUE;
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setChecked(item, c);
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}
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static uiMenuItem *newItem(uiMenu *m, int type, const char *name)
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{
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uiMenuItem *item;
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if (menusFinalized)
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uiprivUserBug("You cannot create a new menu item after menus have been finalized.");
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item = uiprivNew(uiMenuItem);
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g_array_append_val(m->items, item);
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item->type = type;
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switch (item->type) {
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case typeQuit:
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item->name = g_strdup("Quit");
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break;
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case typePreferences:
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item->name = g_strdup("Preferences...");
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break;
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case typeAbout:
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item->name = g_strdup("About");
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break;
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case typeSeparator:
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break;
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default:
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item->name = g_strdup(name);
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break;
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}
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if (item->type == typeQuit) {
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// can't call uiMenuItemOnClicked() here
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item->onClicked = onQuitClicked;
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item->onClickedData = NULL;
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} else
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uiMenuItemOnClicked(item, defaultOnClicked, NULL);
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switch (item->type) {
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case typeCheckbox:
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item->gtype = GTK_TYPE_CHECK_MENU_ITEM;
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break;
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case typeSeparator:
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item->gtype = GTK_TYPE_SEPARATOR_MENU_ITEM;
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break;
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default:
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item->gtype = GTK_TYPE_MENU_ITEM;
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break;
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}
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item->windows = g_hash_table_new(g_direct_hash, g_direct_equal);
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return item;
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}
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uiMenuItem *uiMenuAppendItem(uiMenu *m, const char *name)
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{
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return newItem(m, typeRegular, name);
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}
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uiMenuItem *uiMenuAppendCheckItem(uiMenu *m, const char *name)
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{
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return newItem(m, typeCheckbox, name);
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}
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uiMenuItem *uiMenuAppendQuitItem(uiMenu *m)
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{
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if (hasQuit)
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uiprivUserBug("You cannot have multiple Quit menu items in the same program.");
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hasQuit = TRUE;
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newItem(m, typeSeparator, NULL);
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return newItem(m, typeQuit, NULL);
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}
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uiMenuItem *uiMenuAppendPreferencesItem(uiMenu *m)
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{
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if (hasPreferences)
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uiprivUserBug("You cannot have multiple Preferences menu items in the same program.");
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hasPreferences = TRUE;
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newItem(m, typeSeparator, NULL);
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return newItem(m, typePreferences, NULL);
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}
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uiMenuItem *uiMenuAppendAboutItem(uiMenu *m)
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{
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if (hasAbout)
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uiprivUserBug("You cannot have multiple About menu items in the same program.");
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hasAbout = TRUE;
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newItem(m, typeSeparator, NULL);
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return newItem(m, typeAbout, NULL);
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}
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void uiMenuAppendSeparator(uiMenu *m)
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{
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newItem(m, typeSeparator, NULL);
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}
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uiMenu *uiNewMenu(const char *name)
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{
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uiMenu *m;
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if (menusFinalized)
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uiprivUserBug("You cannot create a new menu after menus have been finalized.");
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if (menus == NULL)
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menus = g_array_new(FALSE, TRUE, sizeof (uiMenu *));
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m = uiprivNew(uiMenu);
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g_array_append_val(menus, m);
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m->name = g_strdup(name);
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m->items = g_array_new(FALSE, TRUE, sizeof (uiMenuItem *));
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return m;
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}
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static void appendMenuItem(GtkMenuShell *submenu, uiMenuItem *item, uiWindow *w)
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{
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GtkWidget *menuitem;
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gulong signal;
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struct menuItemWindow *ww;
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menuitem = g_object_new(item->gtype, NULL);
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if (item->name != NULL)
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gtk_menu_item_set_label(GTK_MENU_ITEM(menuitem), item->name);
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if (item->type != typeSeparator) {
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signal = g_signal_connect(menuitem, "activate", G_CALLBACK(onClicked), item);
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gtk_widget_set_sensitive(menuitem, !item->disabled);
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if (item->type == typeCheckbox)
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singleSetChecked(GTK_CHECK_MENU_ITEM(menuitem), item->checked, signal);
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}
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gtk_menu_shell_append(submenu, menuitem);
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ww = uiprivNew(struct menuItemWindow);
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ww->w = w;
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ww->signal = signal;
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g_hash_table_insert(item->windows, menuitem, ww);
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}
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GtkWidget *uiprivMakeMenubar(uiWindow *w)
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{
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GtkWidget *menubar;
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guint i, j;
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uiMenu *m;
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GtkWidget *menuitem;
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GtkWidget *submenu;
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menusFinalized = TRUE;
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menubar = gtk_menu_bar_new();
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if (menus != NULL)
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for (i = 0; i < menus->len; i++) {
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m = g_array_index(menus, uiMenu *, i);
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menuitem = gtk_menu_item_new_with_label(m->name);
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submenu = gtk_menu_new();
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gtk_menu_item_set_submenu(GTK_MENU_ITEM(menuitem), submenu);
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for (j = 0; j < m->items->len; j++)
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appendMenuItem(GTK_MENU_SHELL(submenu), g_array_index(m->items, uiMenuItem *, j), w);
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gtk_menu_shell_append(GTK_MENU_SHELL(menubar), menuitem);
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}
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gtk_widget_set_hexpand(menubar, TRUE);
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gtk_widget_set_halign(menubar, GTK_ALIGN_FILL);
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return menubar;
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}
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struct freeMenuItemData {
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GArray *items;
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guint i;
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};
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static void freeMenuItem(GtkWidget *widget, gpointer data)
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{
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struct freeMenuItemData *fmi = (struct freeMenuItemData *) data;
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uiMenuItem *item;
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struct menuItemWindow *w;
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item = g_array_index(fmi->items, uiMenuItem *, fmi->i);
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w = (struct menuItemWindow *) g_hash_table_lookup(item->windows, widget);
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if (g_hash_table_remove(item->windows, widget) == FALSE)
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uiprivImplBug("GtkMenuItem %p not in menu item's item/window map", widget);
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uiprivFree(w);
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fmi->i++;
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}
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static void freeMenu(GtkWidget *widget, gpointer data)
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{
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guint *i = (guint *) data;
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uiMenu *m;
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GtkMenuItem *item;
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GtkWidget *submenu;
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struct freeMenuItemData fmi;
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m = g_array_index(menus, uiMenu *, *i);
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item = GTK_MENU_ITEM(widget);
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submenu = gtk_menu_item_get_submenu(item);
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fmi.items = m->items;
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fmi.i = 0;
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gtk_container_foreach(GTK_CONTAINER(submenu), freeMenuItem, &fmi);
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(*i)++;
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}
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void uiprivFreeMenubar(GtkWidget *mb)
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{
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guint i;
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i = 0;
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gtk_container_foreach(GTK_CONTAINER(mb), freeMenu, &i);
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// no need to worry about destroying any widgets; destruction of the window they're in will do it for us
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}
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void uiprivUninitMenus(void)
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{
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uiMenu *m;
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uiMenuItem *item;
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guint i, j;
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if (menus == NULL)
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return;
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for (i = 0; i < menus->len; i++) {
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m = g_array_index(menus, uiMenu *, i);
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g_free(m->name);
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for (j = 0; j < m->items->len; j++) {
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item = g_array_index(m->items, uiMenuItem *, j);
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if (g_hash_table_size(item->windows) != 0)
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// TODO is this really a uiprivUserBug()?
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uiprivImplBug("menu item %p (%s) still has uiWindows attached; did you forget to destroy some windows?", item, item->name);
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g_free(item->name);
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g_hash_table_destroy(item->windows);
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uiprivFree(item);
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}
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g_array_free(m->items, TRUE);
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uiprivFree(m);
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}
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g_array_free(menus, TRUE);
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}
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