chiark / gitweb /
Forbid undo of new-game if it would change the params.
[sgt-puzzles.git] / gtk.c
diff --git a/gtk.c b/gtk.c
index 4af50228075b50450ea25bd0a1843d4b4e3cb3f5..b1175efd03c6d8a2b1ebc932f17d2a2f0e64d470 100644 (file)
--- a/gtk.c
+++ b/gtk.c
 #endif
 #if GTK_CHECK_VERSION(2,8,0)
 # define USE_CAIRO
+# if GTK_CHECK_VERSION(3,0,0) || defined(GDK_DISABLE_DEPRECATED)
+#  define USE_CAIRO_WITHOUT_PIXMAP
+# endif
+#endif
+
+#if GTK_CHECK_VERSION(3,0,0)
+/* The old names are still more concise! */
+#define gtk_hbox_new(x,y) gtk_box_new(GTK_ORIENTATION_HORIZONTAL,y)
+#define gtk_vbox_new(x,y) gtk_box_new(GTK_ORIENTATION_VERTICAL,y)
+/* GTK 3 has retired stock button labels */
+#define LABEL_OK "_OK"
+#define LABEL_CANCEL "_Cancel"
+#define LABEL_NO "_No"
+#define LABEL_YES "_Yes"
+#define LABEL_SAVE "_Save"
+#define LABEL_OPEN "_Open"
+#define gtk_button_new_with_our_label gtk_button_new_with_mnemonic
+#else
+#define LABEL_OK GTK_STOCK_OK
+#define LABEL_CANCEL GTK_STOCK_CANCEL
+#define LABEL_NO GTK_STOCK_NO
+#define LABEL_YES GTK_STOCK_YES
+#define LABEL_SAVE GTK_STOCK_SAVE
+#define LABEL_OPEN GTK_STOCK_OPEN
+#define gtk_button_new_with_our_label gtk_button_new_from_stock
 #endif
 
 /* #undef USE_CAIRO */
@@ -115,10 +140,13 @@ struct font {
  */
 struct frontend {
     GtkWidget *window;
-    GtkAccelGroup *accelgroup;
+    GtkAccelGroup *dummy_accelgroup;
     GtkWidget *area;
     GtkWidget *statusbar;
     GtkWidget *menubar;
+#if GTK_CHECK_VERSION(3,20,0)
+    GtkCssProvider *css_provider;
+#endif
     guint statusctx;
     int w, h;
     midend *me;
@@ -126,7 +154,9 @@ struct frontend {
     const float *colours;
     cairo_t *cr;
     cairo_surface_t *image;
+#ifndef USE_CAIRO_WITHOUT_PIXMAP
     GdkPixmap *pixmap;
+#endif
     GdkColor background;              /* for painting outside puzzle area */
 #else
     GdkPixmap *pixmap;
@@ -151,13 +181,46 @@ struct frontend {
 #ifdef OLD_FILESEL
     char *filesel_name;
 #endif
-    int drawing_area_shrink_pending;
     GSList *preset_radio;
-    int n_preset_menu_items;
     int preset_threaded;
     GtkWidget *preset_custom;
     GtkWidget *copy_menu_item;
+#if !GTK_CHECK_VERSION(3,0,0)
+    int drawing_area_shrink_pending;
     int menubar_is_local;
+#endif
+#if GTK_CHECK_VERSION(3,0,0)
+    /*
+     * This is used to get round an annoying lack of GTK notification
+     * message. If we request a window resize with
+     * gtk_window_resize(), we normally get back a "configure" event
+     * on the window and on its drawing area, and we respond to the
+     * latter by doing an appropriate resize of the puzzle. If the
+     * window is maximised, so that gtk_window_resize() _doesn't_
+     * change its size, then that configure event never shows up. But
+     * if we requested the resize in response to a change of puzzle
+     * parameters (say, the user selected a differently-sized preset
+     * from the menu), then we would still like to be _notified_ that
+     * the window size was staying the same, so that we can respond by
+     * choosing an appropriate tile size for the new puzzle preset in
+     * the existing window size.
+     *
+     * Fortunately, in GTK 3, we may not get a "configure" event on
+     * the drawing area in this situation, but we still get a
+     * "size_allocate" event on the whole window (which, in other
+     * situations when we _do_ get a "configure" on the area, turns up
+     * second). So we treat _that_ event as indicating that if the
+     * "configure" event hasn't already shown up then it's not going
+     * to arrive.
+     *
+     * This flag is where we bookkeep this system. On
+     * gtk_window_resize we set this flag to true; the area's
+     * configure handler sets it back to false; then if that doesn't
+     * happen, the window's size_allocate handler does a fallback
+     * puzzle resize when it sees this flag still set to true.
+     */
+    int awaiting_resize_ack;
+#endif
 };
 
 struct blitter {
@@ -179,10 +242,26 @@ void get_random_seed(void **randseed, int *randseedsize)
 
 void frontend_default_colour(frontend *fe, float *output)
 {
+#if !GTK_CHECK_VERSION(3,0,0)
+    /*
+     * Use the widget style's default background colour as the
+     * background for the puzzle drawing area.
+     */
     GdkColor col = gtk_widget_get_style(fe->window)->bg[GTK_STATE_NORMAL];
     output[0] = col.red / 65535.0;
     output[1] = col.green / 65535.0;
     output[2] = col.blue / 65535.0;
+#else
+    /*
+     * GTK 3 has decided that there's no such thing as a 'default
+     * background colour' any more, because widget styles might set
+     * the background to something more complicated like a background
+     * image. We don't want to get into overlaying our entire puzzle
+     * on an arbitrary background image, so we'll just make up a
+     * reasonable shade of grey.
+     */
+    output[0] = output[1] = output[2] = 0.9F;
+#endif
 }
 
 void gtk_status_bar(void *handle, char *text)
@@ -212,20 +291,22 @@ static void setup_drawing(frontend *fe)
 
 static void teardown_drawing(frontend *fe)
 {
-    cairo_t *cr;
-
     cairo_destroy(fe->cr);
     fe->cr = NULL;
 
-    cr = gdk_cairo_create(fe->pixmap);
-    cairo_set_source_surface(cr, fe->image, 0, 0);
-    cairo_rectangle(cr,
-                   fe->bbox_l - 1,
-                   fe->bbox_u - 1,
-                   fe->bbox_r - fe->bbox_l + 2,
-                   fe->bbox_d - fe->bbox_u + 2);
-    cairo_fill(cr);
-    cairo_destroy(cr);
+#ifndef USE_CAIRO_WITHOUT_PIXMAP
+    {
+        cairo_t *cr = gdk_cairo_create(fe->pixmap);
+        cairo_set_source_surface(cr, fe->image, 0, 0);
+        cairo_rectangle(cr,
+                        fe->bbox_l - 1,
+                        fe->bbox_u - 1,
+                        fe->bbox_r - fe->bbox_l + 2,
+                        fe->bbox_d - fe->bbox_u + 2);
+        cairo_fill(cr);
+        cairo_destroy(cr);
+    }
+#endif
 }
 
 static void snaffle_colours(frontend *fe)
@@ -243,6 +324,35 @@ static void set_colour(frontend *fe, int colour)
 
 static void set_window_background(frontend *fe, int colour)
 {
+#if GTK_CHECK_VERSION(3,20,0)
+    char css_buf[512];
+    sprintf(css_buf, ".background { "
+            "background-color: #%02x%02x%02x; }",
+            (unsigned)(fe->colours[3*colour + 0] * 255),
+            (unsigned)(fe->colours[3*colour + 1] * 255),
+            (unsigned)(fe->colours[3*colour + 2] * 255));
+    if (!fe->css_provider)
+        fe->css_provider = gtk_css_provider_new();
+    if (!gtk_css_provider_load_from_data(
+            GTK_CSS_PROVIDER(fe->css_provider), css_buf, -1, NULL))
+        assert(0 && "Couldn't load CSS");
+    gtk_style_context_add_provider(
+        gtk_widget_get_style_context(fe->window),
+        GTK_STYLE_PROVIDER(fe->css_provider),
+        GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
+    gtk_style_context_add_provider(
+        gtk_widget_get_style_context(fe->area),
+        GTK_STYLE_PROVIDER(fe->css_provider),
+        GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
+#elif GTK_CHECK_VERSION(3,0,0)
+    GdkRGBA rgba;
+    rgba.red = fe->colours[3*colour + 0];
+    rgba.green = fe->colours[3*colour + 1];
+    rgba.blue = fe->colours[3*colour + 2];
+    rgba.alpha = 1.0;
+    gdk_window_set_background_rgba(gtk_widget_get_window(fe->area), &rgba);
+    gdk_window_set_background_rgba(gtk_widget_get_window(fe->window), &rgba);
+#else
     GdkColormap *colmap;
 
     colmap = gdk_colormap_get_system();
@@ -258,6 +368,7 @@ static void set_window_background(frontend *fe, int colour)
                               &fe->background);
     gdk_window_set_background(gtk_widget_get_window(fe->window),
                               &fe->background);
+#endif
 }
 
 static PangoLayout *make_pango_layout(frontend *fe)
@@ -382,28 +493,47 @@ static void clear_backing_store(frontend *fe)
     fe->image = NULL;
 }
 
-static void setup_backing_store(frontend *fe)
+static void wipe_and_maybe_destroy_cairo(frontend *fe, cairo_t *cr,
+                                         int destroy)
 {
-    cairo_t *cr;
-    int i;
+    cairo_set_source_rgb(cr, fe->colours[0], fe->colours[1], fe->colours[2]);
+    cairo_paint(cr);
+    if (destroy)
+        cairo_destroy(cr);
+}
 
+static void setup_backing_store(frontend *fe)
+{
+#ifndef USE_CAIRO_WITHOUT_PIXMAP
     fe->pixmap = gdk_pixmap_new(gtk_widget_get_window(fe->area),
                                 fe->pw, fe->ph, -1);
+#endif
     fe->image = cairo_image_surface_create(CAIRO_FORMAT_RGB24,
                                           fe->pw, fe->ph);
 
-    for (i = 0; i < 3; i++) {
-       switch (i) {
-           case 0: cr = cairo_create(fe->image); break;
-           case 1: cr = gdk_cairo_create(fe->pixmap); break;
-           case 2: cr = gdk_cairo_create(gtk_widget_get_window(fe->area));
-              break;
-       }
-       cairo_set_source_rgb(cr,
-                            fe->colours[0], fe->colours[1], fe->colours[2]);
-       cairo_paint(cr);
-       cairo_destroy(cr);
+    wipe_and_maybe_destroy_cairo(fe, cairo_create(fe->image), TRUE);
+#ifndef USE_CAIRO_WITHOUT_PIXMAP
+    wipe_and_maybe_destroy_cairo(fe, gdk_cairo_create(fe->pixmap), TRUE);
+#endif
+#if GTK_CHECK_VERSION(3,22,0)
+    {
+        GdkWindow *gdkwin;
+        cairo_region_t *region;
+        GdkDrawingContext *drawctx;
+        cairo_t *cr;
+
+        gdkwin = gtk_widget_get_window(fe->area);
+        region = gdk_window_get_clip_region(gdkwin);
+        drawctx = gdk_window_begin_draw_frame(gdkwin, region);
+        cr = gdk_drawing_context_get_cairo_context(drawctx);
+        wipe_and_maybe_destroy_cairo(fe, cr, FALSE);
+        gdk_window_end_draw_frame(gdkwin, drawctx);
+        cairo_region_destroy(region);
     }
+#else
+    wipe_and_maybe_destroy_cairo(
+        fe, gdk_cairo_create(gtk_widget_get_window(fe->area)), TRUE);
+#endif
 }
 
 static int backing_store_ok(frontend *fe)
@@ -414,7 +544,9 @@ static int backing_store_ok(frontend *fe)
 static void teardown_backing_store(frontend *fe)
 {
     cairo_surface_destroy(fe->image);
+#ifndef USE_CAIRO_WITHOUT_PIXMAP
     gdk_pixmap_unref(fe->pixmap);
+#endif
     fe->image = NULL;
 }
 
@@ -668,6 +800,7 @@ static void teardown_backing_store(frontend *fe)
 
 #endif
 
+#ifndef USE_CAIRO_WITHOUT_PIXMAP
 static void repaint_rectangle(frontend *fe, GtkWidget *widget,
                              int x, int y, int w, int h)
 {
@@ -703,6 +836,7 @@ static void repaint_rectangle(frontend *fe, GtkWidget *widget,
                    x - fe->ox, y - fe->oy, x, y, w, h);
     gdk_gc_unref(gc);
 }
+#endif
 
 /* ----------------------------------------------------------------------
  * Pango font functions.
@@ -983,11 +1117,19 @@ void gtk_end_draw(void *handle)
     teardown_drawing(fe);
 
     if (fe->bbox_l < fe->bbox_r && fe->bbox_u < fe->bbox_d) {
+#ifdef USE_CAIRO_WITHOUT_PIXMAP
+        gtk_widget_queue_draw_area(fe->area,
+                                   fe->bbox_l - 1 + fe->ox,
+                                   fe->bbox_u - 1 + fe->oy,
+                                   fe->bbox_r - fe->bbox_l + 2,
+                                   fe->bbox_d - fe->bbox_u + 2);
+#else
        repaint_rectangle(fe, fe->area,
                          fe->bbox_l - 1 + fe->ox,
                          fe->bbox_u - 1 + fe->oy,
                          fe->bbox_r - fe->bbox_l + 2,
                          fe->bbox_d - fe->bbox_u + 2);
+#endif
     }
 }
 
@@ -1050,16 +1192,6 @@ static gint key_event(GtkWidget *widget, GdkEventKey *event, gpointer data)
     if (!backing_store_ok(fe))
         return TRUE;
 
-#if !GTK_CHECK_VERSION(2,0,0)
-    /* Gtk 1.2 passes a key event to this function even if it's also
-     * defined as an accelerator.
-     * Gtk 2 doesn't do this, and this function appears not to exist there. */
-    if (fe->accelgroup &&
-        gtk_accel_group_get_entry(fe->accelgroup,
-        event->keyval, event->state))
-        return TRUE;
-#endif
-
     /* Handle mnemonics. */
     if (gtk_window_activate_key(GTK_WINDOW(fe->window), event))
         return TRUE;
@@ -1106,6 +1238,8 @@ static gint key_event(GtkWidget *widget, GdkEventKey *event, gpointer data)
             event->keyval == GDK_KEY_Delete ||
             event->keyval == GDK_KEY_KP_Delete)
         keyval = '\177';
+    else if ((event->keyval == 'z' || event->keyval == 'Z') && shift && ctrl)
+        keyval = UI_REDO;
     else if (event->string[0] && !event->string[1])
         keyval = (unsigned char)event->string[0];
     else
@@ -1136,10 +1270,14 @@ static gint button_event(GtkWidget *widget, GdkEventButton *event,
        button = RIGHT_BUTTON;
     else if (event->button == 1)
        button = LEFT_BUTTON;
+    else if (event->button == 8 && event->type == GDK_BUTTON_PRESS)
+        button = 'u';
+    else if (event->button == 9 && event->type == GDK_BUTTON_PRESS)
+        button = 'r';
     else
        return FALSE;                  /* don't even know what button! */
 
-    if (event->type == GDK_BUTTON_RELEASE)
+    if (event->type == GDK_BUTTON_RELEASE && button >= LEFT_BUTTON)
         button += LEFT_RELEASE - LEFT_BUTTON;
 
     if (!midend_process_key(fe->me, event->x - fe->ox,
@@ -1179,18 +1317,43 @@ static gint motion_event(GtkWidget *widget, GdkEventMotion *event,
     return TRUE;
 }
 
+#if GTK_CHECK_VERSION(3,0,0)
+static gint draw_area(GtkWidget *widget, cairo_t *cr, gpointer data)
+{
+    frontend *fe = (frontend *)data;
+    GdkRectangle dirtyrect;
+
+    gdk_cairo_get_clip_rectangle(cr, &dirtyrect);
+    cairo_set_source_surface(cr, fe->image, fe->ox, fe->oy);
+    cairo_rectangle(cr, dirtyrect.x, dirtyrect.y,
+                    dirtyrect.width, dirtyrect.height);
+    cairo_fill(cr);
+
+    return TRUE;
+}
+#else
 static gint expose_area(GtkWidget *widget, GdkEventExpose *event,
                         gpointer data)
 {
     frontend *fe = (frontend *)data;
 
     if (backing_store_ok(fe)) {
+#ifdef USE_CAIRO_WITHOUT_PIXMAP
+        cairo_t *cr = gdk_cairo_create(gtk_widget_get_window(widget));
+        cairo_set_source_surface(cr, fe->image, fe->ox, fe->oy);
+        cairo_rectangle(cr, event->area.x, event->area.y,
+                        event->area.width, event->area.height);
+        cairo_fill(cr);
+        cairo_destroy(cr);
+#else
        repaint_rectangle(fe, widget,
                          event->area.x, event->area.y,
                          event->area.width, event->area.height);
+#endif
     }
     return TRUE;
 }
+#endif
 
 static gint map_window(GtkWidget *widget, GdkEvent *event,
                       gpointer data)
@@ -1207,35 +1370,51 @@ static gint map_window(GtkWidget *widget, GdkEvent *event,
     return TRUE;
 }
 
-static gint configure_area(GtkWidget *widget,
-                           GdkEventConfigure *event, gpointer data)
+static void resize_puzzle_to_area(frontend *fe, int x, int y)
 {
-    frontend *fe = (frontend *)data;
-    int x, y;
+    int oldw = fe->w, oldpw = fe->pw, oldh = fe->h, oldph = fe->ph;
 
-    x = event->width;
-    y = event->height;
-
-    if (x != fe->w || y != fe->h || !backing_store_ok(fe)) {
+    fe->w = x;
+    fe->h = y;
+    midend_size(fe->me, &x, &y, TRUE);
+    fe->pw = x;
+    fe->ph = y;
+    fe->ox = (fe->w - fe->pw) / 2;
+    fe->oy = (fe->h - fe->ph) / 2;
+
+    if (oldw != fe->w || oldpw != fe->pw ||
+        oldh != fe->h || oldph != fe->ph || !backing_store_ok(fe)) {
         if (backing_store_ok(fe))
             teardown_backing_store(fe);
-
-        fe->w = x;
-        fe->h = y;
-        midend_size(fe->me, &x, &y, TRUE);
-        fe->pw = x;
-        fe->ph = y;
-        fe->ox = (fe->w - fe->pw) / 2;
-        fe->oy = (fe->h - fe->ph) / 2;
-
         setup_backing_store(fe);
     }
 
     midend_force_redraw(fe->me);
+}
 
+static gint configure_area(GtkWidget *widget,
+                           GdkEventConfigure *event, gpointer data)
+{
+    frontend *fe = (frontend *)data;
+    resize_puzzle_to_area(fe, event->width, event->height);
+    fe->awaiting_resize_ack = FALSE;
     return TRUE;
 }
 
+#if GTK_CHECK_VERSION(3,0,0)
+static void window_size_alloc(GtkWidget *widget, GtkAllocation *allocation,
+                              gpointer data)
+{
+    frontend *fe = (frontend *)data;
+    if (fe->awaiting_resize_ack) {
+        GtkAllocation a;
+        gtk_widget_get_allocation(fe->area, &a);
+        resize_puzzle_to_area(fe, a.width, a.height);
+        fe->awaiting_resize_ack = FALSE;
+    }
+}
+#endif
+
 static gint timer_func(gpointer data)
 {
     frontend *fe = (frontend *)data;
@@ -1258,7 +1437,7 @@ void deactivate_timer(frontend *fe)
     if (!fe)
        return;                        /* can happen due to --generate */
     if (fe->timer_active)
-        gtk_timeout_remove(fe->timer_id);
+        g_source_remove(fe->timer_id);
     fe->timer_active = FALSE;
 }
 
@@ -1267,7 +1446,7 @@ void activate_timer(frontend *fe)
     if (!fe)
        return;                        /* can happen due to --generate */
     if (!fe->timer_active) {
-        fe->timer_id = gtk_timeout_add(20, timer_func, fe);
+        fe->timer_id = g_timeout_add(20, timer_func, fe);
        gettimeofday(&fe->last_time, NULL);
     }
     fe->timer_active = TRUE;
@@ -1278,18 +1457,6 @@ static void window_destroy(GtkWidget *widget, gpointer data)
     gtk_main_quit();
 }
 
-static void msgbox_button_clicked(GtkButton *button, gpointer data)
-{
-    GtkWidget *window = GTK_WIDGET(data);
-    int v, *ip;
-
-    ip = (int *)g_object_get_data(G_OBJECT(window), "user-data");
-    v = GPOINTER_TO_INT(g_object_get_data(G_OBJECT(button), "user-data"));
-    *ip = v;
-
-    gtk_widget_destroy(GTK_WIDGET(data));
-}
-
 static int win_key_press(GtkWidget *widget, GdkEventKey *event, gpointer data)
 {
     GObject *cancelbutton = G_OBJECT(data);
@@ -1307,6 +1474,54 @@ static int win_key_press(GtkWidget *widget, GdkEventKey *event, gpointer data)
 
 enum { MB_OK, MB_YESNO };
 
+static void align_label(GtkLabel *label, double x, double y)
+{
+#if GTK_CHECK_VERSION(3,16,0)
+    gtk_label_set_xalign(label, x);
+    gtk_label_set_yalign(label, y);
+#elif GTK_CHECK_VERSION(3,14,0)
+    gtk_widget_set_halign(GTK_WIDGET(label),
+                          x == 0 ? GTK_ALIGN_START :
+                          x == 1 ? GTK_ALIGN_END : GTK_ALIGN_CENTER);
+    gtk_widget_set_valign(GTK_WIDGET(label),
+                          y == 0 ? GTK_ALIGN_START :
+                          y == 1 ? GTK_ALIGN_END : GTK_ALIGN_CENTER);
+#else
+    gtk_misc_set_alignment(GTK_MISC(label), x, y);
+#endif
+}
+
+#if GTK_CHECK_VERSION(3,0,0)
+int message_box(GtkWidget *parent, char *title, char *msg, int centre,
+               int type)
+{
+    GtkWidget *window;
+    gint ret;
+
+    window = gtk_message_dialog_new
+        (GTK_WINDOW(parent),
+         (GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT),
+         (type == MB_OK ? GTK_MESSAGE_INFO : GTK_MESSAGE_QUESTION),
+         (type == MB_OK ? GTK_BUTTONS_OK   : GTK_BUTTONS_YES_NO),
+         "%s", msg);
+    gtk_window_set_title(GTK_WINDOW(window), title);
+    ret = gtk_dialog_run(GTK_DIALOG(window));
+    gtk_widget_destroy(window);
+    return (type == MB_OK ? TRUE : (ret == GTK_RESPONSE_YES));
+}
+#else /* GTK_CHECK_VERSION(3,0,0) */
+static void msgbox_button_clicked(GtkButton *button, gpointer data)
+{
+    GtkWidget *window = GTK_WIDGET(data);
+    int v, *ip;
+
+    ip = (int *)g_object_get_data(G_OBJECT(window), "user-data");
+    v = GPOINTER_TO_INT(g_object_get_data(G_OBJECT(button), "user-data"));
+    *ip = v;
+
+    gtk_widget_destroy(GTK_WIDGET(data));
+}
+
 int message_box(GtkWidget *parent, char *title, char *msg, int centre,
                int type)
 {
@@ -1316,7 +1531,7 @@ int message_box(GtkWidget *parent, char *title, char *msg, int centre,
 
     window = gtk_dialog_new();
     text = gtk_label_new(msg);
-    gtk_misc_set_alignment(GTK_MISC(text), 0.0, 0.0);
+    align_label(GTK_LABEL(text), 0.0, 0.0);
     hbox = gtk_hbox_new(FALSE, 0);
     gtk_box_pack_start(GTK_BOX(hbox), text, FALSE, FALSE, 20);
     gtk_box_pack_start
@@ -1328,18 +1543,18 @@ int message_box(GtkWidget *parent, char *title, char *msg, int centre,
     gtk_label_set_line_wrap(GTK_LABEL(text), TRUE);
 
     if (type == MB_OK) {
-       titles = GTK_STOCK_OK "\0";
+       titles = LABEL_OK "\0";
        def = cancel = 0;
     } else {
        assert(type == MB_YESNO);
-       titles = GTK_STOCK_NO "\0" GTK_STOCK_YES "\0";
+       titles = LABEL_NO "\0" LABEL_YES "\0";
        def = 1;
        cancel = 0;
     }
     i = 0;
     
     while (*titles) {
-       button = gtk_button_new_from_stock(titles);
+       button = gtk_button_new_with_our_label(titles);
        gtk_box_pack_end
             (GTK_BOX(gtk_dialog_get_action_area(GTK_DIALOG(window))),
              button, FALSE, FALSE, 0);
@@ -1370,6 +1585,7 @@ int message_box(GtkWidget *parent, char *title, char *msg, int centre,
     gtk_main();
     return (type == MB_YESNO ? i == 1 : TRUE);
 }
+#endif /* GTK_CHECK_VERSION(3,0,0) */
 
 void error_box(GtkWidget *parent, char *msg)
 {
@@ -1446,6 +1662,7 @@ static void droplist_sel(GtkComboBox *combo, gpointer data)
 static int get_config(frontend *fe, int which)
 {
     GtkWidget *w, *table, *cancel;
+    GtkBox *content_box, *button_box;
     char *title;
     config_item *i;
     int y;
@@ -1454,38 +1671,57 @@ static int get_config(frontend *fe, int which)
     fe->cfg_which = which;
     fe->cfgret = FALSE;
 
+#if GTK_CHECK_VERSION(3,0,0)
+    /* GtkDialog isn't quite flexible enough */
+    fe->cfgbox = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+    content_box = GTK_BOX(gtk_vbox_new(FALSE, 8));
+    g_object_set(G_OBJECT(content_box), "margin", 8, (const char *)NULL);
+    gtk_widget_show(GTK_WIDGET(content_box));
+    gtk_container_add(GTK_CONTAINER(fe->cfgbox), GTK_WIDGET(content_box));
+    button_box = GTK_BOX(gtk_hbox_new(FALSE, 8));
+    gtk_widget_show(GTK_WIDGET(button_box));
+    gtk_box_pack_end(content_box, GTK_WIDGET(button_box), FALSE, FALSE, 0);
+    {
+        GtkWidget *sep = gtk_separator_new(GTK_ORIENTATION_HORIZONTAL);
+        gtk_widget_show(sep);
+        gtk_box_pack_end(content_box, sep, FALSE, FALSE, 0);
+    }
+#else
     fe->cfgbox = gtk_dialog_new();
+    content_box = GTK_BOX(gtk_dialog_get_content_area(GTK_DIALOG(fe->cfgbox)));
+    button_box = GTK_BOX(gtk_dialog_get_action_area(GTK_DIALOG(fe->cfgbox)));
+#endif
     gtk_window_set_title(GTK_WINDOW(fe->cfgbox), title);
     sfree(title);
 
-    w = gtk_button_new_from_stock(GTK_STOCK_CANCEL);
-    gtk_box_pack_end
-        (GTK_BOX(gtk_dialog_get_action_area(GTK_DIALOG(fe->cfgbox))),
-         w, FALSE, FALSE, 0);
+    w = gtk_button_new_with_our_label(LABEL_CANCEL);
+    gtk_box_pack_end(button_box, w, FALSE, FALSE, 0);
     gtk_widget_show(w);
     g_signal_connect(G_OBJECT(w), "clicked",
                      G_CALLBACK(config_cancel_button_clicked), fe);
     cancel = w;
 
-    w = gtk_button_new_from_stock(GTK_STOCK_OK);
-    gtk_box_pack_end
-        (GTK_BOX(gtk_dialog_get_action_area(GTK_DIALOG(fe->cfgbox))),
-         w, FALSE, FALSE, 0);
+    w = gtk_button_new_with_our_label(LABEL_OK);
+    gtk_box_pack_end(button_box, w, FALSE, FALSE, 0);
     gtk_widget_show(w);
     gtk_widget_set_can_default(w, TRUE);
     gtk_window_set_default(GTK_WINDOW(fe->cfgbox), w);
     g_signal_connect(G_OBJECT(w), "clicked",
                      G_CALLBACK(config_ok_button_clicked), fe);
 
+#if GTK_CHECK_VERSION(3,0,0)
+    table = gtk_grid_new();
+#else
     table = gtk_table_new(1, 2, FALSE);
+#endif
     y = 0;
-    gtk_box_pack_start
-        (GTK_BOX(gtk_dialog_get_content_area(GTK_DIALOG(fe->cfgbox))),
-         table, FALSE, FALSE, 0);
+    gtk_box_pack_start(content_box, table, FALSE, FALSE, 0);
     gtk_widget_show(table);
 
     for (i = fe->cfg; i->type != C_END; i++) {
+#if !GTK_CHECK_VERSION(3,0,0)
        gtk_table_resize(GTK_TABLE(table), y+1, 2);
+#endif
 
        switch (i->type) {
          case C_STRING:
@@ -1494,18 +1730,27 @@ static int get_config(frontend *fe, int which)
             */
 
            w = gtk_label_new(i->name);
-           gtk_misc_set_alignment(GTK_MISC(w), 0.0, 0.5);
+           align_label(GTK_LABEL(w), 0.0, 0.5);
+#if GTK_CHECK_VERSION(3,0,0)
+            gtk_grid_attach(GTK_GRID(table), w, 0, y, 1, 1);
+#else
            gtk_table_attach(GTK_TABLE(table), w, 0, 1, y, y+1,
                             GTK_SHRINK | GTK_FILL,
                             GTK_EXPAND | GTK_SHRINK | GTK_FILL,
                             3, 3);
+#endif
            gtk_widget_show(w);
 
            w = gtk_entry_new();
+#if GTK_CHECK_VERSION(3,0,0)
+            gtk_grid_attach(GTK_GRID(table), w, 1, y, 1, 1);
+            g_object_set(G_OBJECT(w), "hexpand", TRUE, (const char *)NULL);
+#else
            gtk_table_attach(GTK_TABLE(table), w, 1, 2, y, y+1,
                             GTK_EXPAND | GTK_SHRINK | GTK_FILL,
                             GTK_EXPAND | GTK_SHRINK | GTK_FILL,
                             3, 3);
+#endif
            gtk_entry_set_text(GTK_ENTRY(w), i->sval);
            g_signal_connect(G_OBJECT(w), "changed",
                              G_CALLBACK(editbox_changed), i);
@@ -1522,10 +1767,15 @@ static int get_config(frontend *fe, int which)
             w = gtk_check_button_new_with_label(i->name);
            g_signal_connect(G_OBJECT(w), "toggled",
                              G_CALLBACK(button_toggled), i);
+#if GTK_CHECK_VERSION(3,0,0)
+            gtk_grid_attach(GTK_GRID(table), w, 0, y, 2, 1);
+            g_object_set(G_OBJECT(w), "hexpand", TRUE, (const char *)NULL);
+#else
            gtk_table_attach(GTK_TABLE(table), w, 0, 2, y, y+1,
                             GTK_EXPAND | GTK_SHRINK | GTK_FILL,
                             GTK_EXPAND | GTK_SHRINK | GTK_FILL,
                             3, 3);
+#endif
            gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(w), i->ival);
            gtk_widget_show(w);
            break;
@@ -1536,11 +1786,15 @@ static int get_config(frontend *fe, int which)
             */
 
            w = gtk_label_new(i->name);
-           gtk_misc_set_alignment(GTK_MISC(w), 0.0, 0.5);
+           align_label(GTK_LABEL(w), 0.0, 0.5);
+#if GTK_CHECK_VERSION(3,0,0)
+            gtk_grid_attach(GTK_GRID(table), w, 0, y, 1, 1);
+#else
            gtk_table_attach(GTK_TABLE(table), w, 0, 1, y, y+1,
                             GTK_SHRINK | GTK_FILL,
                             GTK_EXPAND | GTK_SHRINK | GTK_FILL ,
                             3, 3);
+#endif
            gtk_widget_show(w);
 
             {
@@ -1585,10 +1839,15 @@ static int get_config(frontend *fe, int which)
                                 G_CALLBACK(droplist_sel), i);
             }
 
+#if GTK_CHECK_VERSION(3,0,0)
+            gtk_grid_attach(GTK_GRID(table), w, 1, y, 1, 1);
+            g_object_set(G_OBJECT(w), "hexpand", TRUE, (const char *)NULL);
+#else
            gtk_table_attach(GTK_TABLE(table), w, 1, 2, y, y+1,
                             GTK_EXPAND | GTK_SHRINK | GTK_FILL,
                             GTK_EXPAND | GTK_SHRINK | GTK_FILL,
                             3, 3);
+#endif
            gtk_widget_show(w);
            break;
        }
@@ -1664,20 +1923,21 @@ static void changed_preset(frontend *fe)
            TRUE);
     } else {
        GSList *gs = fe->preset_radio;
-       int i = fe->n_preset_menu_items - 1 - n;
-       if (fe->preset_custom)
-           gs = gs->next;
-       while (i && gs) {
-           i--;
-           gs = gs->next;
-       }
-       if (gs) {
-           gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(gs->data),
-                                          TRUE);
-       } else for (gs = fe->preset_radio; gs; gs = gs->next) {
-           gtk_check_menu_item_set_active(GTK_CHECK_MENU_ITEM(gs->data),
-                                          FALSE);
-       }
+        GSList *found = NULL;
+
+        for (gs = fe->preset_radio; gs; gs = gs->next) {
+            struct preset_menu_entry *entry =
+                (struct preset_menu_entry *)g_object_get_data(
+                    G_OBJECT(gs->data), "user-data");
+            if (!entry || entry->id != n)
+                gtk_check_menu_item_set_active(
+                    GTK_CHECK_MENU_ITEM(gs->data), FALSE);
+            else
+                found = gs;
+        }
+        if (found)
+            gtk_check_menu_item_set_active(
+                GTK_CHECK_MENU_ITEM(found->data), TRUE);
     }
     fe->preset_threaded = FALSE;
 
@@ -1690,6 +1950,7 @@ static void changed_preset(frontend *fe)
     }
 }
 
+#if !GTK_CHECK_VERSION(3,0,0)
 static gboolean not_size_allocated_yet(GtkWidget *w)
 {
     /*
@@ -1738,28 +1999,52 @@ static void try_shrink_drawing_area(frontend *fe)
         fe->drawing_area_shrink_pending = FALSE;
     }
 }
+#endif /* !GTK_CHECK_VERSION(3,0,0) */
 
 static gint configure_window(GtkWidget *widget,
                              GdkEventConfigure *event, gpointer data)
 {
-    frontend *fe = (frontend *)data;
+#if !GTK_CHECK_VERSION(3,0,0)
     /*
      * When the main puzzle window changes size, it might be because
      * the menu bar or status bar has turned up after starting off
      * absent, in which case we should have another go at enacting a
      * pending shrink of the drawing area.
      */
+    frontend *fe = (frontend *)data;
     try_shrink_drawing_area(fe);
+#endif
     return FALSE;
 }
 
+#if GTK_CHECK_VERSION(3,0,0)
+static int window_extra_height(frontend *fe)
+{
+    int ret = 0;
+    if (fe->menubar) {
+        GtkRequisition req;
+        gtk_widget_get_preferred_size(fe->menubar, &req, NULL);
+        ret += req.height;
+    }
+    if (fe->statusbar) {
+        GtkRequisition req;
+        gtk_widget_get_preferred_size(fe->statusbar, &req, NULL);
+        ret += req.height;
+    }
+    return ret;
+}
+#endif
+
 static void resize_fe(frontend *fe)
 {
     int x, y;
 
     get_size(fe, &x, &y);
-    fe->w = x;
-    fe->h = y;
+
+#if GTK_CHECK_VERSION(3,0,0)
+    gtk_window_resize(GTK_WINDOW(fe->window), x, y + window_extra_height(fe));
+    fe->awaiting_resize_ack = TRUE;
+#else
     fe->drawing_area_shrink_pending = FALSE;
     gtk_drawing_area_size(GTK_DRAWING_AREA(fe->area), x, y);
     {
@@ -1769,22 +2054,25 @@ static void resize_fe(frontend *fe)
     }
     fe->drawing_area_shrink_pending = TRUE;
     try_shrink_drawing_area(fe);
+#endif
 }
 
 static void menu_preset_event(GtkMenuItem *menuitem, gpointer data)
 {
     frontend *fe = (frontend *)data;
-    game_params *params =
-        (game_params *)g_object_get_data(G_OBJECT(menuitem), "user-data");
+    struct preset_menu_entry *entry =
+        (struct preset_menu_entry *)g_object_get_data(
+            G_OBJECT(menuitem), "user-data");
 
     if (fe->preset_threaded ||
        (GTK_IS_CHECK_MENU_ITEM(menuitem) &&
         !gtk_check_menu_item_get_active(GTK_CHECK_MENU_ITEM(menuitem))))
        return;
-    midend_set_params(fe->me, params);
+    midend_set_params(fe->me, entry->params);
     midend_new_game(fe->me);
     changed_preset(fe);
     resize_fe(fe);
+    midend_redraw(fe->me);
 }
 
 GdkAtom compound_text_atom, utf8_string_atom;
@@ -1914,14 +2202,15 @@ static char *file_selector(frontend *fe, char *title, int save)
                                    GTK_WINDOW(fe->window),
                                    save ? GTK_FILE_CHOOSER_ACTION_SAVE :
                                    GTK_FILE_CHOOSER_ACTION_OPEN,
-                                   GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
-                                   save ? GTK_STOCK_SAVE : GTK_STOCK_OPEN,
+                                   LABEL_CANCEL, GTK_RESPONSE_CANCEL,
+                                   save ? LABEL_SAVE : LABEL_OPEN,
                                    GTK_RESPONSE_ACCEPT,
                                    NULL);
 
     if (gtk_dialog_run(GTK_DIALOG(filesel)) == GTK_RESPONSE_ACCEPT) {
-        const char *name = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(filesel));
+        char *name = gtk_file_chooser_get_filename(GTK_FILE_CHOOSER(filesel));
         filesel_name = dupstr(name);
+        g_free(name);
     }
 
     gtk_widget_destroy(filesel);
@@ -1971,15 +2260,14 @@ static void menu_save_event(GtkMenuItem *menuitem, gpointer data)
                    " file \"%.*s\"?",
                    FILENAME_MAX, name);
            if (!message_box(fe->window, "Question", buf, TRUE, MB_YESNO))
-               return;
+                goto free_and_return;
        }
 
        fp = fopen(name, "w");
-        sfree(name);
 
         if (!fp) {
             error_box(fe->window, "Unable to open save file");
-            return;
+            goto free_and_return;
         }
 
        {
@@ -1993,10 +2281,11 @@ static void menu_save_event(GtkMenuItem *menuitem, gpointer data)
                sprintf(boxmsg, "Error writing save file: %.400s",
                        strerror(errno));
                error_box(fe->window, boxmsg);
-               return;
+               goto free_and_return;
            }
        }
-
+    free_and_return:
+        sfree(name);
     }
 }
 
@@ -2027,6 +2316,7 @@ static void menu_load_event(GtkMenuItem *menuitem, gpointer data)
 
        changed_preset(fe);
         resize_fe(fe);
+        midend_redraw(fe->me);
     }
 }
 
@@ -2064,11 +2354,27 @@ static void menu_config_event(GtkMenuItem *menuitem, gpointer data)
 
     midend_new_game(fe->me);
     resize_fe(fe);
+    midend_redraw(fe->me);
 }
 
 static void menu_about_event(GtkMenuItem *menuitem, gpointer data)
 {
     frontend *fe = (frontend *)data;
+
+#if GTK_CHECK_VERSION(3,0,0)
+    extern char *const *const xpm_icons[];
+    extern const int n_xpm_icons;
+    GdkPixbuf *icon = gdk_pixbuf_new_from_xpm_data
+        ((const gchar **)xpm_icons[n_xpm_icons-1]);
+    gtk_show_about_dialog
+        (GTK_WINDOW(fe->window),
+         "program-name", thegame.name,
+         "version", ver,
+         "comments", "Part of Simon Tatham's Portable Puzzle Collection",
+         "logo", icon,
+         (const gchar *)NULL);
+    g_object_unref(G_OBJECT(icon));
+#else
     char titlebuf[256];
     char textbuf[1024];
 
@@ -2079,34 +2385,37 @@ static void menu_about_event(GtkMenuItem *menuitem, gpointer data)
            "%.500s", thegame.name, ver);
 
     message_box(fe->window, titlebuf, textbuf, TRUE, MB_OK);
+#endif
 }
 
-static GtkWidget *add_menu_item_with_key(frontend *fe, GtkContainer *cont,
-                                         char *text, int key)
+static GtkWidget *add_menu_ui_item(
+    frontend *fe, GtkContainer *cont, char *text, int action,
+    int accel_key, int accel_keyqual)
 {
     GtkWidget *menuitem = gtk_menu_item_new_with_label(text);
-    int keyqual;
     gtk_container_add(cont, menuitem);
-    g_object_set_data(G_OBJECT(menuitem), "user-data", GINT_TO_POINTER(key));
+    g_object_set_data(G_OBJECT(menuitem), "user-data",
+                      GINT_TO_POINTER(action));
     g_signal_connect(G_OBJECT(menuitem), "activate",
                      G_CALLBACK(menu_key_event), fe);
-    switch (key & ~0x1F) {
-      case 0x00:
-       key += 0x60;
-       keyqual = GDK_CONTROL_MASK;
-       break;
-      case 0x40:
-       key += 0x20;
-       keyqual = GDK_SHIFT_MASK;
-       break;
-      default:
-       keyqual = 0;
-       break;
+
+    if (accel_key) {
+        /*
+         * Display a keyboard accelerator alongside this menu item.
+         * Actually this won't be processed via the usual GTK
+         * accelerator system, because we add it to a dummy
+         * accelerator group which is never actually activated on the
+         * main window; this permits back ends to override special
+         * keys like 'n' and 'r' and 'u' in some UI states. So
+         * whatever keystroke we display here will still go to
+         * key_event and be handled in the normal way.
+         */
+        gtk_widget_add_accelerator(menuitem,
+                                   "activate", fe->dummy_accelgroup,
+                                   accel_key, accel_keyqual,
+                                   GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED);
     }
-    gtk_widget_add_accelerator(menuitem,
-                              "activate", fe->accelgroup,
-                              key, keyqual,
-                              GTK_ACCEL_VISIBLE);
+
     gtk_widget_show(menuitem);
     return menuitem;
 }
@@ -2118,6 +2427,36 @@ static void add_menu_separator(GtkContainer *cont)
     gtk_widget_show(menuitem);
 }
 
+static void populate_gtk_preset_menu(frontend *fe, struct preset_menu *menu,
+                                     GtkWidget *gtkmenu)
+{
+    int i;
+
+    for (i = 0; i < menu->n_entries; i++) {
+        struct preset_menu_entry *entry = &menu->entries[i];
+        GtkWidget *menuitem;
+
+        if (entry->params) {
+            menuitem = gtk_radio_menu_item_new_with_label(
+                fe->preset_radio, entry->title);
+            fe->preset_radio = gtk_radio_menu_item_get_group(
+                GTK_RADIO_MENU_ITEM(menuitem));
+            g_object_set_data(G_OBJECT(menuitem), "user-data", entry);
+            g_signal_connect(G_OBJECT(menuitem), "activate",
+                             G_CALLBACK(menu_preset_event), fe);
+        } else {
+            GtkWidget *submenu;
+            menuitem = gtk_menu_item_new_with_label(entry->title);
+            submenu = gtk_menu_new();
+            gtk_menu_item_set_submenu(GTK_MENU_ITEM(menuitem), submenu);
+            populate_gtk_preset_menu(fe, entry->submenu, submenu);
+        }
+
+        gtk_container_add(GTK_CONTAINER(gtkmenu), menuitem);
+        gtk_widget_show(menuitem);
+    }
+}
+
 enum { ARG_EITHER, ARG_SAVE, ARG_ID }; /* for argtype */
 
 static frontend *new_window(char *arg, int argtype, char **error)
@@ -2125,14 +2464,17 @@ static frontend *new_window(char *arg, int argtype, char **error)
     frontend *fe;
     GtkBox *vbox, *hbox;
     GtkWidget *menu, *menuitem;
-    GdkPixmap *iconpm;
     GList *iconlist;
     int x, y, n;
     char errbuf[1024];
     extern char *const *const xpm_icons[];
     extern const int n_xpm_icons;
+    struct preset_menu *preset_menu;
 
     fe = snew(frontend);
+#if GTK_CHECK_VERSION(3,20,0)
+    fe->css_provider = NULL;
+#endif
 
     fe->timer_active = FALSE;
     fe->timer_id = -1;
@@ -2199,6 +2541,7 @@ static frontend *new_window(char *arg, int argtype, char **error)
        midend_new_game(fe->me);
     }
 
+#if !GTK_CHECK_VERSION(3,0,0)
     {
         /*
          * try_shrink_drawing_area() will do some fiddling with the
@@ -2225,6 +2568,11 @@ static frontend *new_window(char *arg, int argtype, char **error)
             fe->menubar_is_local = !unity_mode;
         }
     }
+#endif
+
+#if GTK_CHECK_VERSION(3,0,0)
+    fe->awaiting_resize_ack = FALSE;
+#endif
 
     fe->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
     gtk_window_set_title(GTK_WINDOW(fe->window), thegame.name);
@@ -2233,8 +2581,11 @@ static frontend *new_window(char *arg, int argtype, char **error)
     gtk_container_add(GTK_CONTAINER(fe->window), GTK_WIDGET(vbox));
     gtk_widget_show(GTK_WIDGET(vbox));
 
-    fe->accelgroup = gtk_accel_group_new();
-    gtk_window_add_accel_group(GTK_WINDOW(fe->window), fe->accelgroup);
+    fe->dummy_accelgroup = gtk_accel_group_new();
+    /*
+     * Intentionally _not_ added to the window via
+     * gtk_window_add_accel_group; see menu_key_event
+     */
 
     hbox = GTK_BOX(gtk_hbox_new(FALSE, 0));
     gtk_box_pack_start(vbox, GTK_WIDGET(hbox), FALSE, FALSE, 0);
@@ -2251,7 +2602,7 @@ static frontend *new_window(char *arg, int argtype, char **error)
     menu = gtk_menu_new();
     gtk_menu_item_set_submenu(GTK_MENU_ITEM(menuitem), menu);
 
-    add_menu_item_with_key(fe, GTK_CONTAINER(menu), "New", 'n');
+    add_menu_ui_item(fe, GTK_CONTAINER(menu), "New", UI_NEWGAME, 'n', 0);
 
     menuitem = gtk_menu_item_new_with_label("Restart");
     gtk_container_add(GTK_CONTAINER(menu), menuitem);
@@ -2277,11 +2628,11 @@ static frontend *new_window(char *arg, int argtype, char **error)
 
     fe->preset_radio = NULL;
     fe->preset_custom = NULL;
-    fe->n_preset_menu_items = 0;
     fe->preset_threaded = FALSE;
-    if ((n = midend_num_presets(fe->me)) > 0 || thegame.can_configure) {
+
+    preset_menu = midend_get_presets(fe->me, NULL);
+    if (preset_menu->n_entries > 0 || thegame.can_configure) {
         GtkWidget *submenu;
-        int i;
 
         menuitem = gtk_menu_item_new_with_mnemonic("_Type");
         gtk_container_add(GTK_CONTAINER(fe->menubar), menuitem);
@@ -2290,30 +2641,14 @@ static frontend *new_window(char *arg, int argtype, char **error)
         submenu = gtk_menu_new();
         gtk_menu_item_set_submenu(GTK_MENU_ITEM(menuitem), submenu);
 
-        for (i = 0; i < n; i++) {
-            char *name;
-            game_params *params;
-
-            midend_fetch_preset(fe->me, i, &name, &params);
-
-           menuitem =
-               gtk_radio_menu_item_new_with_label(fe->preset_radio, name);
-           fe->preset_radio =
-               gtk_radio_menu_item_group(GTK_RADIO_MENU_ITEM(menuitem));
-           fe->n_preset_menu_items++;
-            gtk_container_add(GTK_CONTAINER(submenu), menuitem);
-            g_object_set_data(G_OBJECT(menuitem), "user-data", params);
-            g_signal_connect(G_OBJECT(menuitem), "activate",
-                             G_CALLBACK(menu_preset_event), fe);
-            gtk_widget_show(menuitem);
-        }
+        populate_gtk_preset_menu(fe, preset_menu, submenu);
 
        if (thegame.can_configure) {
            menuitem = fe->preset_custom =
                gtk_radio_menu_item_new_with_label(fe->preset_radio,
                                                   "Custom...");
            fe->preset_radio =
-               gtk_radio_menu_item_group(GTK_RADIO_MENU_ITEM(menuitem));
+               gtk_radio_menu_item_get_group(GTK_RADIO_MENU_ITEM(menuitem));
             gtk_container_add(GTK_CONTAINER(submenu), menuitem);
             g_object_set_data(G_OBJECT(menuitem), "user-data",
                               GINT_TO_POINTER(CFG_SETTINGS));
@@ -2337,8 +2672,8 @@ static frontend *new_window(char *arg, int argtype, char **error)
     gtk_widget_show(menuitem);
 #ifndef STYLUS_BASED
     add_menu_separator(GTK_CONTAINER(menu));
-    add_menu_item_with_key(fe, GTK_CONTAINER(menu), "Undo", 'u');
-    add_menu_item_with_key(fe, GTK_CONTAINER(menu), "Redo", 'r');
+    add_menu_ui_item(fe, GTK_CONTAINER(menu), "Undo", UI_UNDO, 'u', 0);
+    add_menu_ui_item(fe, GTK_CONTAINER(menu), "Redo", UI_REDO, 'r', 0);
 #endif
     if (thegame.can_format_as_text_ever) {
        add_menu_separator(GTK_CONTAINER(menu));
@@ -2360,7 +2695,7 @@ static frontend *new_window(char *arg, int argtype, char **error)
        gtk_widget_show(menuitem);
     }
     add_menu_separator(GTK_CONTAINER(menu));
-    add_menu_item_with_key(fe, GTK_CONTAINER(menu), "Exit", 'q');
+    add_menu_ui_item(fe, GTK_CONTAINER(menu), "Exit", UI_QUIT, 'q', 0);
 
     menuitem = gtk_menu_item_new_with_mnemonic("_Help");
     gtk_container_add(GTK_CONTAINER(fe->menubar), menuitem);
@@ -2378,7 +2713,7 @@ static frontend *new_window(char *arg, int argtype, char **error)
 #ifdef STYLUS_BASED
     menuitem=gtk_button_new_with_mnemonic("_Redo");
     g_object_set_data(G_OBJECT(menuitem), "user-data",
-                      GINT_TO_POINTER((int)('r')));
+                      GINT_TO_POINTER(UI_REDO));
     g_signal_connect(G_OBJECT(menuitem), "clicked",
                      G_CALLBACK(menu_key_event), fe);
     gtk_box_pack_end(hbox, menuitem, FALSE, FALSE, 0);
@@ -2386,7 +2721,7 @@ static frontend *new_window(char *arg, int argtype, char **error)
 
     menuitem=gtk_button_new_with_mnemonic("_Undo");
     g_object_set_data(G_OBJECT(menuitem), "user-data",
-                      GINT_TO_POINTER((int)('u')));
+                      GINT_TO_POINTER(UI_UNDO));
     g_signal_connect(G_OBJECT(menuitem), "clicked",
                      G_CALLBACK(menu_key_event), fe);
     gtk_box_pack_end(hbox, menuitem, FALSE, FALSE, 0);
@@ -2429,24 +2764,43 @@ static frontend *new_window(char *arg, int argtype, char **error)
        fe->statusctx = gtk_statusbar_get_context_id
            (GTK_STATUSBAR(fe->statusbar), "game");
        gtk_statusbar_push(GTK_STATUSBAR(fe->statusbar), fe->statusctx,
-                          "test");
+                          DEFAULT_STATUSBAR_TEXT);
+#if GTK_CHECK_VERSION(3,0,0)
+       gtk_widget_get_preferred_size(fe->statusbar, &req, NULL);
+#else
        gtk_widget_size_request(fe->statusbar, &req);
-#if 0
-       /* For GTK 2.0, should we be using gtk_widget_set_size_request? */
 #endif
-       gtk_widget_set_usize(viewport, -1, req.height);
+       gtk_widget_set_size_request(viewport, -1, req.height);
     } else
        fe->statusbar = NULL;
 
     fe->area = gtk_drawing_area_new();
-#if GTK_CHECK_VERSION(2,0,0)
+#if GTK_CHECK_VERSION(2,0,0) && !GTK_CHECK_VERSION(3,0,0)
     gtk_widget_set_double_buffered(fe->area, FALSE);
 #endif
+    {
+        GdkGeometry geom;
+        geom.base_width = 0;
+#if GTK_CHECK_VERSION(3,0,0)
+        geom.base_height = window_extra_height(fe);
+        gtk_window_set_geometry_hints(GTK_WINDOW(fe->window), NULL,
+                                      &geom, GDK_HINT_BASE_SIZE);
+#else
+        geom.base_height = 0;
+        gtk_window_set_geometry_hints(GTK_WINDOW(fe->window), fe->area,
+                                      &geom, GDK_HINT_BASE_SIZE);
+#endif
+    }
+    fe->w = -1;
+    fe->h = -1;
     get_size(fe, &x, &y);
+#if GTK_CHECK_VERSION(3,0,0)
+    gtk_window_set_default_size(GTK_WINDOW(fe->window),
+                                x, y + window_extra_height(fe));
+#else
     fe->drawing_area_shrink_pending = FALSE;
     gtk_drawing_area_size(GTK_DRAWING_AREA(fe->area), x, y);
-    fe->w = x;
-    fe->h = y;
+#endif
 
     gtk_box_pack_end(vbox, fe->area, TRUE, TRUE, 0);
 
@@ -2471,14 +2825,23 @@ static frontend *new_window(char *arg, int argtype, char **error)
                      G_CALLBACK(selection_get), fe);
     g_signal_connect(G_OBJECT(fe->area), "selection_clear_event",
                      G_CALLBACK(selection_clear), fe);
+#if GTK_CHECK_VERSION(3,0,0)
+    g_signal_connect(G_OBJECT(fe->area), "draw",
+                     G_CALLBACK(draw_area), fe);
+#else
     g_signal_connect(G_OBJECT(fe->area), "expose_event",
                      G_CALLBACK(expose_area), fe);
+#endif
     g_signal_connect(G_OBJECT(fe->window), "map_event",
                      G_CALLBACK(map_window), fe);
     g_signal_connect(G_OBJECT(fe->area), "configure_event",
                      G_CALLBACK(configure_area), fe);
     g_signal_connect(G_OBJECT(fe->window), "configure_event",
                      G_CALLBACK(configure_window), fe);
+#if GTK_CHECK_VERSION(3,0,0)
+    g_signal_connect(G_OBJECT(fe->window), "size_allocate",
+                     G_CALLBACK(window_size_alloc), fe);
+#endif
 
     gtk_widget_add_events(GTK_WIDGET(fe->area),
                           GDK_BUTTON_PRESS_MASK |
@@ -2487,12 +2850,10 @@ static frontend *new_window(char *arg, int argtype, char **error)
                          GDK_POINTER_MOTION_HINT_MASK);
 
     if (n_xpm_icons) {
-       gtk_widget_realize(fe->window);
-       iconpm = gdk_pixmap_create_from_xpm_d
-            (gtk_widget_get_window(fe->window), NULL, NULL,
-             (gchar **)xpm_icons[0]);
-       gdk_window_set_icon(gtk_widget_get_window(fe->window),
-                            NULL, iconpm, NULL);
+        gtk_window_set_icon(GTK_WINDOW(fe->window),
+                            gdk_pixbuf_new_from_xpm_data
+                            ((const gchar **)xpm_icons[0]));
+
        iconlist = NULL;
        for (n = 0; n < n_xpm_icons; n++) {
            iconlist =
@@ -2500,14 +2861,17 @@ static frontend *new_window(char *arg, int argtype, char **error)
                              gdk_pixbuf_new_from_xpm_data((const gchar **)
                                                           xpm_icons[n]));
        }
-       gdk_window_set_icon_list(gtk_widget_get_window(fe->window), iconlist);
+       gtk_window_set_icon_list(GTK_WINDOW(fe->window), iconlist);
     }
 
     gtk_widget_show(fe->area);
     gtk_widget_show(fe->window);
 
+#if !GTK_CHECK_VERSION(3,0,0)
     fe->drawing_area_shrink_pending = TRUE;
     try_shrink_drawing_area(fe);
+#endif
+
     set_window_background(fe, 0);
 
     return fe;
@@ -2532,6 +2896,22 @@ char *fgetline(FILE *fp)
     return ret;
 }
 
+static void list_presets_from_menu(struct preset_menu *menu)
+{
+    int i;
+
+    for (i = 0; i < menu->n_entries; i++) {
+        if (menu->entries[i].params) {
+            char *paramstr = thegame.encode_params(
+                menu->entries[i].params, TRUE);
+            printf("%s %s\n", paramstr, menu->entries[i].title);
+            sfree(paramstr);
+        } else {
+            list_presets_from_menu(menu->entries[i].submenu);
+        }
+    }
+}
+
 int main(int argc, char **argv)
 {
     char *pname = argv[0];
@@ -2935,23 +3315,12 @@ int main(int argc, char **argv)
          * Another specialist mode which causes the puzzle to list the
          * game_params strings for all its preset configurations.
          */
-        int i, npresets;
         midend *me;
+        struct preset_menu *menu;
 
        me = midend_new(NULL, &thegame, NULL, NULL);
-        npresets = midend_num_presets(me);
-
-        for (i = 0; i < npresets; i++) {
-            game_params *params;
-            char *name, *paramstr;
-
-            midend_fetch_preset(me, i, &name, &params);
-            paramstr = thegame.encode_params(params, TRUE);
-
-            printf("%s %s\n", paramstr, name);
-            sfree(paramstr);
-        }
-
+        menu = midend_get_presets(me, NULL);
+        list_presets_from_menu(menu);
        midend_free(me);
         return 0;
     } else {