349 lines
8.7 KiB
C
349 lines
8.7 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 menu {
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uiMenu m;
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char *name;
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GArray *items; // []*struct menuItem
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};
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struct menuItem {
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uiMenuItem mi;
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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(struct menuItem *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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struct menuItem *item = (struct menuItem *) 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))(uiMenuItem(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 menuItemEnableDisable(struct menuItem *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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static void menuItemEnable(uiMenuItem *ii)
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{
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struct menuItem *item = (struct menuItem *) ii;
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menuItemEnableDisable(item, TRUE);
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}
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static void menuItemDisable(uiMenuItem *ii)
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{
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struct menuItem *item = (struct menuItem *) ii;
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menuItemEnableDisable(item, FALSE);
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}
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static void menuItemOnClicked(uiMenuItem *ii, void (*f)(uiMenuItem *, uiWindow *, void *), void *data)
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{
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struct menuItem *item = (struct menuItem *) ii;
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item->onClicked = f;
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item->onClickedData = data;
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}
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static int menuItemChecked(uiMenuItem *ii)
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{
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struct menuItem *item = (struct menuItem *) ii;
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return item->checked != FALSE;
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}
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static void menuItemSetChecked(uiMenuItem *ii, int checked)
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{
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struct menuItem *item = (struct menuItem *) ii;
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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(struct menu *m, int type, const char *name)
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{
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struct menuItem *item;
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if (menusFinalized)
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complain("attempt to create a new menu item after menus have been finalized");
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item = uiNew(struct menuItem);
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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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item->onClicked = defaultOnClicked;
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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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uiMenuItem(item)->Enable = menuItemEnable;
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uiMenuItem(item)->Disable = menuItemDisable;
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uiMenuItem(item)->OnClicked = menuItemOnClicked;
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uiMenuItem(item)->Checked = menuItemChecked;
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uiMenuItem(item)->SetChecked = menuItemSetChecked;
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return uiMenuItem(item);
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}
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uiMenuItem *menuAppendItem(uiMenu *mm, const char *name)
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{
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return newItem((struct menu *) mm, typeRegular, name);
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}
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uiMenuItem *menuAppendCheckItem(uiMenu *mm, const char *name)
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{
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return newItem((struct menu *) mm, typeCheckbox, name);
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}
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uiMenuItem *menuAppendQuitItem(uiMenu *mm)
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{
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if (hasQuit)
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complain("attempt to add multiple Quit menu items");
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hasQuit = TRUE;
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newItem((struct menu *) mm, typeSeparator, NULL);
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return newItem((struct menu *) mm, typeQuit, NULL);
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}
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uiMenuItem *menuAppendPreferencesItem(uiMenu *mm)
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{
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if (hasPreferences)
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complain("attempt to add multiple Preferences menu items");
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hasPreferences = TRUE;
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newItem((struct menu *) mm, typeSeparator, NULL);
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return newItem((struct menu *) mm, typePreferences, NULL);
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}
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uiMenuItem *menuAppendAboutItem(uiMenu *mm)
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{
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if (hasAbout)
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complain("attempt to add multiple About menu items");
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hasAbout = TRUE;
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newItem((struct menu *) mm, typeSeparator, NULL);
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return newItem((struct menu *) mm, typeAbout, NULL);
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}
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void menuAppendSeparator(uiMenu *mm)
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{
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newItem((struct menu *) mm, typeSeparator, NULL);
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}
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uiMenu *uiNewMenu(const char *name)
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{
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struct menu *m;
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if (menusFinalized)
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complain("attempt to 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 (struct menu *));
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m = uiNew(struct menu);
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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 (struct menuItem *));
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uiMenu(m)->AppendItem = menuAppendItem;
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uiMenu(m)->AppendCheckItem = menuAppendCheckItem;
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uiMenu(m)->AppendQuitItem = menuAppendQuitItem;
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uiMenu(m)->AppendPreferencesItem = menuAppendPreferencesItem;
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uiMenu(m)->AppendAboutItem = menuAppendAboutItem;
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uiMenu(m)->AppendSeparator = menuAppendSeparator;
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return uiMenu(m);
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}
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static void appendMenuItem(GtkMenuShell *submenu, struct menuItem *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 = uiNew(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 *makeMenubar(uiWindow *w)
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{
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GtkWidget *menubar;
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guint i, j;
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struct menu *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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for (i = 0; i < menus->len; i++) {
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m = g_array_index(menus, struct menu *, 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, struct menuItem *, 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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struct menuItem *item;
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struct menuItemWindow *w;
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item = g_array_index(fmi->items, struct menuItem *, 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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complain("GtkMenuItem %p not in menu item's item/window map", widget);
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uiFree(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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struct menu *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, struct menu *, *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 freeMenubar(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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