patch 7.4.1402v7.4.1402

Problem:    GTK 3 is not supported.
Solution:   Add GTK 3 support. (Kazunobu Kuriyama)

1 files changed, 1319 insertions, 20 deletions

diff --git a/src/gui_gtk_x11.c b/src/gui_gtk_x11.c
index 9f6775fb8c..440b401ab1 100644
--- a/src/gui_gtk_x11.c
+++ b/src/gui_gtk_x11.c
@@ -19,6 +19,10 @@
  *
  * (C) 2002,2003  Jason Hildebrand  <jason@peaceworks.ca>
  *		  Daniel Elstner  <daniel.elstner@gmx.net>
+ *
+ * Support for GTK+ 3 was added by:
+ *
+ * 2016  Kazunobu Kuriyama  <kazunobu.kuriyama@gmail.com>
  */
 
 #include "vim.h"
@@ -75,14 +79,18 @@ extern void bonobo_dock_item_set_behavior(BonoboDockItem *dock_item, BonoboDockI
 # define GdkEventConfigure int
 # define GdkEventClient int
 #else
-# include <gdk/gdkkeysyms.h>
+# if GTK_CHECK_VERSION(3,0,0)
+#  include <gdk/gdkkeysyms-compat.h>
+#  include <gtk/gtkx.h>
+# else
+#  include <gdk/gdkkeysyms.h>
+# endif
 # include <gdk/gdk.h>
 # ifdef WIN3264
 #  include <gdk/gdkwin32.h>
 # else
 #  include <gdk/gdkx.h>
 # endif
-
 # include <gtk/gtk.h>
 # include "gui_gtk_f.h"
 #endif
@@ -580,6 +588,7 @@ gui_mch_free_all(void)
 }
 #endif
 
+#if !GTK_CHECK_VERSION(3,0,0)
 /*
  * This should be maybe completely removed.
  * Doesn't seem possible, since check_copy_area() relies on
@@ -601,10 +610,93 @@ visibility_event(GtkWidget *widget UNUSED,
 			     gui.visibility != GDK_VISIBILITY_UNOBSCURED);
     return FALSE;
 }
+#endif /* !GTK_CHECK_VERSION(3,0,0) */
 
 /*
  * Redraw the corresponding portions of the screen.
  */
+#if GTK_CHECK_VERSION(3,0,0)
+static gboolean is_key_pressed = FALSE;
+
+static gboolean gui_gtk_is_blink_on(void);
+static gboolean gui_gtk_is_no_blink(void);
+static void gui_gtk_window_clear(GdkWindow *win);
+
+    static void
+gui_gtk3_redraw(int x, int y, int width, int height)
+{
+    gui_redraw_block(Y_2_ROW(y), X_2_COL(x),
+	    Y_2_ROW(y + height - 1), X_2_COL(x + width - 1),
+	    GUI_MON_NOCLEAR);
+}
+
+    static void
+gui_gtk3_update_cursor(cairo_t *cr)
+{
+    if (gui.row == gui.cursor_row)
+    {
+	gui.by_signal = TRUE;
+	gui_update_cursor(TRUE, TRUE);
+	gui.by_signal = FALSE;
+	cairo_paint(cr);
+    }
+}
+
+    static gboolean
+gui_gtk3_should_draw_cursor(void)
+{
+    unsigned int cond = 0;
+    cond |= gui_gtk_is_blink_on();
+    cond |= is_key_pressed;
+    cond |= gui.in_focus == FALSE;
+    cond |= gui_gtk_is_no_blink();
+    return  cond;
+}
+
+    static gboolean
+draw_event(GtkWidget *widget,
+	   cairo_t   *cr,
+	   gpointer   user_data UNUSED)
+{
+    /* Skip this when the GUI isn't set up yet, will redraw later. */
+    if (gui.starting)
+	return FALSE;
+
+    out_flush();		/* make sure all output has been processed */
+				/* for GTK+ 3, may induce other draw events. */
+
+    cairo_set_source_surface(cr, gui.surface, 0, 0);
+
+    /* Draw the window without the cursor. */
+    gui.by_signal = TRUE;
+    {
+	cairo_rectangle_list_t *list = NULL;
+
+	gui_gtk_window_clear(gtk_widget_get_window(widget));
+
+	list = cairo_copy_clip_rectangle_list(cr);
+	if (list->status != CAIRO_STATUS_CLIP_NOT_REPRESENTABLE)
+	{
+	    int i;
+	    for (i = 0; i < list->num_rectangles; i++)
+	    {
+		const cairo_rectangle_t rect = list->rectangles[i];
+		gui_gtk3_redraw(rect.x, rect.y, rect.width, rect.height);
+	    }
+	}
+	cairo_rectangle_list_destroy(list);
+
+	cairo_paint(cr);
+    }
+    gui.by_signal = FALSE;
+
+    /* Add the cursor to the window if necessary.*/
+    if (gui_gtk3_should_draw_cursor())
+	gui_gtk3_update_cursor(cr);
+
+    return FALSE;
+}
+#else /* !GTK_CHECK_VERSION(3,0,0) */
     static gint
 expose_event(GtkWidget *widget UNUSED,
 	     GdkEventExpose *event,
@@ -631,6 +723,7 @@ expose_event(GtkWidget *widget UNUSED,
 
     return FALSE;
 }
+#endif /* !GTK_CHECK_VERSION(3,0,0) */
 
 #ifdef FEAT_CLIENTSERVER
 /*
@@ -643,7 +736,11 @@ property_event(GtkWidget *widget,
 {
     if (event->type == GDK_PROPERTY_NOTIFY
 	    && event->state == (int)GDK_PROPERTY_NEW_VALUE
+# if GTK_CHECK_VERSION(3,0,0)
+	    && GDK_WINDOW_XID(event->window) == commWindow
+# else
 	    && GDK_WINDOW_XWINDOW(event->window) == commWindow
+# endif
 	    && GET_X_ATOM(event->atom) == commProperty)
     {
 	XEvent xev;
@@ -653,11 +750,16 @@ property_event(GtkWidget *widget,
 	xev.xproperty.atom = commProperty;
 	xev.xproperty.window = commWindow;
 	xev.xproperty.state = PropertyNewValue;
+# if GTK_CHECK_VERSION(3,0,0)
+	serverEventProc(GDK_WINDOW_XDISPLAY(gtk_widget_get_window(widget)),
+		&xev, 0);
+# else
 	serverEventProc(GDK_WINDOW_XDISPLAY(widget->window), &xev, 0);
+# endif
     }
     return FALSE;
 }
-#endif
+#endif /* defined(FEAT_CLIENTSERVER) */
 
 
 /****************************************************************************
@@ -682,6 +784,20 @@ static long_u blink_ontime = 400;
 static long_u blink_offtime = 250;
 static guint blink_timer = 0;
 
+#if GTK_CHECK_VERSION(3,0,0)
+    static gboolean
+gui_gtk_is_blink_on(void)
+{
+    return blink_state == BLINK_ON;
+}
+
+    static gboolean
+gui_gtk_is_no_blink(void)
+{
+    return blink_waittime == 0 || blink_ontime == 0 || blink_offtime == 0;
+}
+#endif
+
     void
 gui_mch_set_blinking(long waittime, long on, long off)
 {
@@ -698,7 +814,11 @@ gui_mch_stop_blink(void)
 {
     if (blink_timer)
     {
+#if GTK_CHECK_VERSION(3,0,0)
+	g_source_remove(blink_timer);
+#else
 	gtk_timeout_remove(blink_timer);
+#endif
 	blink_timer = 0;
     }
     if (blink_state == BLINK_OFF)
@@ -706,22 +826,36 @@ gui_mch_stop_blink(void)
     blink_state = BLINK_NONE;
 }
 
+#if GTK_CHECK_VERSION(3,0,0)
+    static gboolean
+#else
     static gint
+#endif
 blink_cb(gpointer data UNUSED)
 {
     if (blink_state == BLINK_ON)
     {
 	gui_undraw_cursor();
 	blink_state = BLINK_OFF;
+#if GTK_CHECK_VERSION(3,0,0)
+	blink_timer = g_timeout_add((guint)blink_offtime,
+				   (GSourceFunc) blink_cb, NULL);
+#else
 	blink_timer = gtk_timeout_add((guint32)blink_offtime,
 				   (GtkFunction) blink_cb, NULL);
+#endif
     }
     else
     {
 	gui_update_cursor(TRUE, FALSE);
 	blink_state = BLINK_ON;
+#if GTK_CHECK_VERSION(3,0,0)
+	blink_timer = g_timeout_add((guint)blink_ontime,
+				   (GSourceFunc) blink_cb, NULL);
+#else
 	blink_timer = gtk_timeout_add((guint32)blink_ontime,
 				   (GtkFunction) blink_cb, NULL);
+#endif
     }
 
     return FALSE;		/* don't happen again */
@@ -736,14 +870,23 @@ gui_mch_start_blink(void)
 {
     if (blink_timer)
     {
+#if GTK_CHECK_VERSION(3,0,0)
+	g_source_remove(blink_timer);
+#else
 	gtk_timeout_remove(blink_timer);
+#endif
 	blink_timer = 0;
     }
     /* Only switch blinking on if none of the times is zero */
     if (blink_waittime && blink_ontime && blink_offtime && gui.in_focus)
     {
+#if GTK_CHECK_VERSION(3,0,0)
+	blink_timer = g_timeout_add((guint)blink_waittime,
+				   (GSourceFunc) blink_cb, NULL);
+#else
 	blink_timer = gtk_timeout_add((guint32)blink_waittime,
 				   (GtkFunction) blink_cb, NULL);
+#endif
 	blink_state = BLINK_ON;
 	gui_update_cursor(TRUE, FALSE);
     }
@@ -758,7 +901,11 @@ enter_notify_event(GtkWidget *widget UNUSED,
 	gui_mch_start_blink();
 
     /* make sure keyboard input goes there */
+#if GTK_CHECK_VERSION(3,0,0)
+    if (gtk_socket_id == 0 || !gtk_widget_has_focus(gui.drawarea))
+#else
     if (gtk_socket_id == 0 || !GTK_WIDGET_HAS_FOCUS(gui.drawarea))
+#endif
 	gtk_widget_grab_focus(gui.drawarea);
 
     return FALSE;
@@ -938,6 +1085,11 @@ key_press_event(GtkWidget *widget UNUSED,
     guint	state;
     char_u	*s, *d;
 
+#if GTK_CHECK_VERSION(3,0,0)
+    is_key_pressed = TRUE;
+    gui_mch_stop_blink();
+#endif
+
     gui.event_time = event->time;
     key_sym = event->keyval;
     state = event->state;
@@ -1127,12 +1279,17 @@ key_press_event(GtkWidget *widget UNUSED,
     return TRUE;
 }
 
-#if defined(FEAT_XIM)
+#if defined(FEAT_XIM) || GTK_CHECK_VERSION(3,0,0)
     static gboolean
 key_release_event(GtkWidget *widget UNUSED,
 		  GdkEventKey *event,
 		  gpointer data UNUSED)
 {
+# if GTK_CHECK_VERSION(3,0,0)
+    is_key_pressed = FALSE;
+    gui_mch_start_blink();
+# endif
+# if defined(FEAT_XIM)
     gui.event_time = event->time;
     /*
      * GTK+ 2 input methods may do fancy stuff on key release events too.
@@ -1140,6 +1297,9 @@ key_release_event(GtkWidget *widget UNUSED,
      * by holding down CTRL-SHIFT and typing hexadecimal digits.
      */
     return xim_queue_key_press_event(event, FALSE);
+# else
+    return TRUE;
+# endif
 }
 #endif
 
@@ -1179,13 +1339,22 @@ selection_received_cb(GtkWidget		*widget UNUSED,
     int		    len;
     int		    motion_type = MAUTO;
 
+#if GTK_CHECK_VERSION(3,0,0)
+    if (gtk_selection_data_get_selection(data) == clip_plus.gtk_sel_atom)
+#else
     if (data->selection == clip_plus.gtk_sel_atom)
+#endif
 	cbd = &clip_plus;
     else
 	cbd = &clip_star;
 
+#if GTK_CHECK_VERSION(3,0,0)
+    text = (char_u *)gtk_selection_data_get_data(data);
+    len = gtk_selection_data_get_length(data);
+#else
     text = (char_u *)data->data;
     len  = data->length;
+#endif
 
     if (text == NULL || len <= 0)
     {
@@ -1195,13 +1364,20 @@ selection_received_cb(GtkWidget		*widget UNUSED,
 	return;
     }
 
+#if GTK_CHECK_VERSION(3,0,0)
+    if (gtk_selection_data_get_data_type(data) == vim_atom)
+#else
     if (data->type == vim_atom)
+#endif
     {
 	motion_type = *text++;
 	--len;
     }
-
+#if GTK_CHECK_VERSION(3,0,0)
+    else if (gtk_selection_data_get_data_type(data) == vimenc_atom)
+#else
     else if (data->type == vimenc_atom)
+#endif
     {
 	char_u		*enc;
 	vimconv_T	conv;
@@ -1292,7 +1468,12 @@ selection_get_cb(GtkWidget	    *widget UNUSED,
     GdkAtom	    type;
     VimClipboard    *cbd;
 
+#if GTK_CHECK_VERSION(3,0,0)
+    if (gtk_selection_data_get_selection(selection_data)
+	    == clip_plus.gtk_sel_atom)
+#else
     if (selection_data->selection == clip_plus.gtk_sel_atom)
+#endif
 	cbd = &clip_plus;
     else
 	cbd = &clip_star;
@@ -1361,8 +1542,12 @@ selection_get_cb(GtkWidget	    *widget UNUSED,
 	    string = tmpbuf;
 	    length += 2;
 
+#if !GTK_CHECK_VERSION(3,0,0)
+	    /* Looks redandunt even for GTK2 because these values are
+	     * overwritten by gtk_selection_data_set() that follows. */
 	    selection_data->type = selection_data->target;
 	    selection_data->format = 16;	/* 16 bits per char */
+#endif
 	    gtk_selection_data_set(selection_data, html_atom, 16,
 							      string, length);
 	    vim_free(string);
@@ -1411,9 +1596,12 @@ selection_get_cb(GtkWidget	    *widget UNUSED,
 
     if (string != NULL)
     {
+#if !GTK_CHECK_VERSION(3,0,0)
+	/* Looks redandunt even for GTK2 because these values are
+	 * overwritten by gtk_selection_data_set() that follows. */
 	selection_data->type = selection_data->target;
 	selection_data->format = 8;	/* 8 bits per char */
-
+#endif
 	gtk_selection_data_set(selection_data, type, 8, string, length);
 	vim_free(string);
     }
@@ -1493,7 +1681,11 @@ static int mouse_timed_out = TRUE;
 /*
  * Timer used to recognize multiple clicks of the mouse button
  */
+#if GTK_CHECK_VERSION(3,0,0)
+    static gboolean
+#else
     static gint
+#endif
 mouse_click_timer_cb(gpointer data)
 {
     /* we don't use this information currently */
@@ -1505,13 +1697,20 @@ mouse_click_timer_cb(gpointer data)
 
 static guint motion_repeat_timer  = 0;
 static int   motion_repeat_offset = FALSE;
+#ifdef GTK_DEST_DEFAULT_ALL
+static gboolean  motion_repeat_timer_cb(gpointer);
+#else
 static gint  motion_repeat_timer_cb(gpointer);
+#endif
 
     static void
 process_motion_notify(int x, int y, GdkModifierType state)
 {
     int	    button;
     int_u   vim_modifiers;
+#if GTK_CHECK_VERSION(3,0,0)
+    GtkAllocation allocation;
+#endif
 
     button = (state & (GDK_BUTTON1_MASK | GDK_BUTTON2_MASK |
 		       GDK_BUTTON3_MASK | GDK_BUTTON4_MASK |
@@ -1538,9 +1737,17 @@ process_motion_notify(int x, int y, GdkModifierType state)
     /*
      * Auto repeat timer handling.
      */
+#if GTK_CHECK_VERSION(3,0,0)
+    gtk_widget_get_allocation(gui.drawarea, &allocation);
+
+    if (x < 0 || y < 0
+	    || x >= allocation.width
+	    || y >= allocation.height)
+#else
     if (x < 0 || y < 0
 	    || x >= gui.drawarea->allocation.width
 	    || y >= gui.drawarea->allocation.height)
+#endif
     {
 
 	int dx;
@@ -1551,8 +1758,13 @@ process_motion_notify(int x, int y, GdkModifierType state)
 	/* Calculate the maximal distance of the cursor from the drawing area.
 	 * (offshoot can't become negative here!).
 	 */
+#if GTK_CHECK_VERSION(3,0,0)
+	dx = x < 0 ? -x : x - allocation.width;
+	dy = y < 0 ? -y : y - allocation.height;
+#else
 	dx = x < 0 ? -x : x - gui.drawarea->allocation.width;
 	dy = y < 0 ? -y : y - gui.drawarea->allocation.height;
+#endif
 
 	offshoot = dx > dy ? dx : dy;
 
@@ -1577,22 +1789,66 @@ process_motion_notify(int x, int y, GdkModifierType state)
 
 	/* shoot again */
 	if (!motion_repeat_timer)
+#if GTK_CHECK_VERSION(3,0,0)
+	    motion_repeat_timer = g_timeout_add((guint)delay,
+						motion_repeat_timer_cb, NULL);
+#else
 	    motion_repeat_timer = gtk_timeout_add((guint32)delay,
 						motion_repeat_timer_cb, NULL);
+#endif
     }
 }
 
+#if GTK_CHECK_VERSION(3,0,0)
+    static GdkDevice *
+gui_gtk_get_pointer_device(GtkWidget *widget)
+{
+    GdkWindow * const win = gtk_widget_get_window(widget);
+    GdkDisplay * const dpy = gdk_window_get_display(win);
+    GdkDeviceManager * const mngr = gdk_display_get_device_manager(dpy);
+    return gdk_device_manager_get_client_pointer(mngr);
+}
+
+    static GdkWindow *
+gui_gtk_get_pointer(GtkWidget       *widget,
+		    gint	    *x,
+		    gint	    *y,
+		    GdkModifierType *state)
+{
+    GdkWindow * const win = gtk_widget_get_window(widget);
+    GdkDevice * const dev = gui_gtk_get_pointer_device(widget);
+    return gdk_window_get_device_position(win, dev , x, y, state);
+}
+
+    static GdkWindow *
+gui_gtk_window_at_position(GtkWidget *widget,
+			   gint      *x,
+			   gint      *y)
+{
+    GdkDevice * const dev = gui_gtk_get_pointer_device(widget);
+    return gdk_device_get_window_at_position(dev, x, y);
+}
+#endif
+
 /*
  * Timer used to recognize multiple clicks of the mouse button.
  */
+#if GTK_CHECK_VERSION(3,0,0)
+    static gboolean
+#else
     static gint
+#endif
 motion_repeat_timer_cb(gpointer data UNUSED)
 {
     int		    x;
     int		    y;
     GdkModifierType state;
 
+#if GTK_CHECK_VERSION(3,0,0)
+    gui_gtk_get_pointer(gui.drawarea, &x, &y, &state);
+#else
     gdk_window_get_pointer(gui.drawarea->window, &x, &y, &state);
+#endif
 
     if (!(state & (GDK_BUTTON1_MASK | GDK_BUTTON2_MASK |
 		   GDK_BUTTON3_MASK | GDK_BUTTON4_MASK |
@@ -1637,7 +1893,11 @@ motion_notify_event(GtkWidget *widget,
 	int		y;
 	GdkModifierType	state;
 
+#if GTK_CHECK_VERSION(3,0,0)
+	gui_gtk_get_pointer(widget, &x, &y, &state);
+#else
 	gdk_window_get_pointer(widget->window, &x, &y, &state);
+#endif
 	process_motion_notify(x, y, state);
     }
     else
@@ -1668,7 +1928,11 @@ button_press_event(GtkWidget *widget,
     gui.event_time = event->time;
 
     /* Make sure we have focus now we've been selected */
+#if GTK_CHECK_VERSION(3,0,0)
+    if (gtk_socket_id != 0 && !gtk_widget_has_focus(widget))
+#else
     if (gtk_socket_id != 0 && !GTK_WIDGET_HAS_FOCUS(widget))
+#endif
 	gtk_widget_grab_focus(widget);
 
     /*
@@ -1684,14 +1948,23 @@ button_press_event(GtkWidget *widget,
     /* Handle multiple clicks */
     if (!mouse_timed_out && mouse_click_timer)
     {
+#if GTK_CHECK_VERSION(3,0,0)
+	g_source_remove(mouse_click_timer);
+#else
 	gtk_timeout_remove(mouse_click_timer);
+#endif
 	mouse_click_timer = 0;
 	repeated_click = TRUE;
     }
 
     mouse_timed_out = FALSE;
+#if GTK_CHECK_VERSION(3,0,0)
+    mouse_click_timer = g_timeout_add((guint)p_mouset,
+				  mouse_click_timer_cb, &mouse_timed_out);
+#else
     mouse_click_timer = gtk_timeout_add((guint32)p_mouset,
 				  mouse_click_timer_cb, &mouse_timed_out);
+#endif
 
     switch (event->button)
     {
@@ -1730,7 +2003,11 @@ scroll_event(GtkWidget *widget,
     int	    button;
     int_u   vim_modifiers;
 
+#if GTK_CHECK_VERSION(3,0,0)
+    if (gtk_socket_id != 0 && !gtk_widget_has_focus(widget))
+#else
     if (gtk_socket_id != 0 && !GTK_WIDGET_HAS_FOCUS(widget))
+#endif
 	gtk_widget_grab_focus(widget);
 
     switch (event->direction)
@@ -1781,7 +2058,11 @@ button_release_event(GtkWidget *widget UNUSED,
        area .*/
     if (motion_repeat_timer)
     {
+#if GTK_CHECK_VERSION(3,0,0)
+	g_source_remove(motion_repeat_timer);
+#else
 	gtk_timeout_remove(motion_repeat_timer);
+#endif
 	motion_repeat_timer = 0;
     }
 
@@ -1896,7 +2177,13 @@ drag_handle_uri_list(GdkDragContext	*context,
     char_u  **fnames;
     int	    nfiles = 0;
 
+# if GTK_CHECK_VERSION(3,0,0)
+    fnames = parse_uri_list(&nfiles,
+	    (char_u *)gtk_selection_data_get_data(data),
+	    gtk_selection_data_get_length(data));
+# else
     fnames = parse_uri_list(&nfiles, data->data, data->length);
+# endif
 
     if (fnames != NULL && nfiles > 0)
     {
@@ -1923,10 +2210,19 @@ drag_handle_text(GdkDragContext	    *context,
     int	    len;
     char_u  *tmpbuf = NULL;
 
+# if GTK_CHECK_VERSION(3,0,0)
+    text = (char_u *)gtk_selection_data_get_data(data);
+    len = gtk_selection_data_get_length(data);
+# else
     text = data->data;
     len  = data->length;
+# endif
 
+# if GTK_CHECK_VERSION(3,0,0)
+    if (gtk_selection_data_get_data_type(data) == utf8_string_atom)
+# else
     if (data->type == utf8_string_atom)
+# endif
     {
 	if (input_conv.vc_type != CONV_NONE)
 	    tmpbuf = string_convert(&input_conv, text, &len);
@@ -1962,10 +2258,21 @@ drag_data_received_cb(GtkWidget		*widget,
     GdkModifierType state;
 
     /* Guard against trash */
+# if GTK_CHECK_VERSION(3,0,0)
+    const guchar * const data_data = gtk_selection_data_get_data(data);
+    const gint data_length = gtk_selection_data_get_length(data);
+    const gint data_format = gtk_selection_data_get_format(data);
+
+    if (data_data == NULL
+	    || data_length <= 0
+	    || data_format != 8
+	    || data_data[data_length] != '\0')
+# else
     if (data->data == NULL
 	    || data->length <= 0
 	    || data->format != 8
 	    || data->data[data->length] != '\0')
+# endif
     {
 	gtk_drag_finish(context, FALSE, FALSE, time_);
 	return;
@@ -1973,7 +2280,11 @@ drag_data_received_cb(GtkWidget		*widget,
 
     /* Get the current modifier state for proper distinguishment between
      * different operations later. */
+#if GTK_CHECK_VERSION(3,0,0)
+    gui_gtk_get_pointer(widget, NULL, NULL, &state);
+# else
     gdk_window_get_pointer(widget->window, NULL, NULL, &state);
+# endif
 
     /* Not sure about the role of "text/plain" here... */
     if (info == (guint)TARGET_TEXT_URI_LIST)
@@ -2253,7 +2564,7 @@ setup_save_yourself(void)
     Atom    *existing_atoms = NULL;
     int	    count = 0;
 
-#ifdef USE_XSMP
+# ifdef USE_XSMP
     if (xsmp_icefd != -1)
     {
 	/*
@@ -2264,16 +2575,25 @@ setup_save_yourself(void)
 
 	g_io_add_watch(g_io, G_IO_IN | G_IO_ERR | G_IO_HUP,
 				  local_xsmp_handle_requests, (gpointer)g_io);
+	g_io_channel_unref(g_io);
     }
     else
-#endif
+# endif
     {
 	/* Fall back to old method */
 
 	/* first get the existing value */
+# if GTK_CHECK_VERSION(3,0,0)
+	GdkWindow * const mainwin_win = gtk_widget_get_window(gui.mainwin);
+
+	if (XGetWMProtocols(GDK_WINDOW_XDISPLAY(mainwin_win),
+		    GDK_WINDOW_XID(mainwin_win),
+		    &existing_atoms, &count))
+# else
 	if (XGetWMProtocols(GDK_WINDOW_XDISPLAY(gui.mainwin->window),
 		    GDK_WINDOW_XWINDOW(gui.mainwin->window),
 		    &existing_atoms, &count))
+# endif
 	{
 	    Atom	*new_atoms;
 	    Atom	save_yourself_xatom;
@@ -2295,8 +2615,13 @@ setup_save_yourself(void)
 		{
 		    memcpy(new_atoms, existing_atoms, count * sizeof(Atom));
 		    new_atoms[count] = save_yourself_xatom;
+# if GTK_CHECK_VERSION(3,0,0)
+		    XSetWMProtocols(GDK_WINDOW_XDISPLAY(mainwin_win),
+			    GDK_WINDOW_XID(mainwin_win),
+# else
 		    XSetWMProtocols(GDK_WINDOW_XDISPLAY(gui.mainwin->window),
 			    GDK_WINDOW_XWINDOW(gui.mainwin->window),
+# endif
 			    new_atoms, count + 1);
 		    vim_free(new_atoms);
 		}
@@ -2341,8 +2666,13 @@ global_event_filter(GdkXEvent *xev,
 	 * know we are done saving ourselves.  We don't want to be
 	 * restarted, thus set argv to NULL.
 	 */
+# if GTK_CHECK_VERSION(3,0,0)
+	XSetCommand(GDK_WINDOW_XDISPLAY(gtk_widget_get_window(gui.mainwin)),
+		    GDK_WINDOW_XID(gtk_widget_get_window(gui.mainwin)),
+# else
 	XSetCommand(GDK_WINDOW_XDISPLAY(gui.mainwin->window),
 		    GDK_WINDOW_XWINDOW(gui.mainwin->window),
+# endif
 		    NULL, 0);
 	return GDK_FILTER_REMOVE;
     }
@@ -2376,10 +2706,18 @@ mainwin_realize(GtkWidget *widget UNUSED, gpointer data UNUSED)
 #undef magick
 # undef static
 
+#if GTK_CHECK_VERSION(3,0,0)
+    GdkWindow * const mainwin_win = gtk_widget_get_window(gui.mainwin);
+#endif
+
     /* When started with "--echo-wid" argument, write window ID on stdout. */
     if (echo_wid_arg)
     {
+#if GTK_CHECK_VERSION(3,0,0)
+	printf("WID: %ld\n", (long)GDK_WINDOW_XID(mainwin_win));
+#else
 	printf("WID: %ld\n", (long)GDK_WINDOW_XWINDOW(gui.mainwin->window));
+#endif
 	fflush(stdout);
     }
 
@@ -2416,10 +2754,17 @@ mainwin_realize(GtkWidget *widget UNUSED, gpointer data UNUSED)
     if (serverName == NULL && serverDelayedStartName != NULL)
     {
 	/* This is a :gui command in a plain vim with no previous server */
+# if GTK_CHECK_VERSION(3,0,0)
+	commWindow = GDK_WINDOW_XID(mainwin_win);
+
+	(void)serverRegisterName(GDK_WINDOW_XDISPLAY(mainwin_win),
+				 serverDelayedStartName);
+# else
 	commWindow = GDK_WINDOW_XWINDOW(gui.mainwin->window);
 
 	(void)serverRegisterName(GDK_WINDOW_XDISPLAY(gui.mainwin->window),
 				 serverDelayedStartName);
+# endif
     }
     else
     {
@@ -2428,12 +2773,22 @@ mainwin_realize(GtkWidget *widget UNUSED, gpointer data UNUSED)
 	 * have to change the "server" registration to that of the main window
 	 * If we have not registered a name yet, remember the window
 	 */
+# if GTK_CHECK_VERSION(3,0,0)
+	serverChangeRegisteredWindow(GDK_WINDOW_XDISPLAY(mainwin_win),
+				     GDK_WINDOW_XID(mainwin_win));
+# else
 	serverChangeRegisteredWindow(GDK_WINDOW_XDISPLAY(gui.mainwin->window),
 				     GDK_WINDOW_XWINDOW(gui.mainwin->window));
+# endif
     }
     gtk_widget_add_events(gui.mainwin, GDK_PROPERTY_CHANGE_MASK);
+# if GTK_CHECK_VERSION(3,0,0)
+    g_signal_connect(G_OBJECT(gui.mainwin), "property-notify-event",
+		     G_CALLBACK(property_event), NULL);
+# else
     gtk_signal_connect(GTK_OBJECT(gui.mainwin), "property_notify_event",
 		       GTK_SIGNAL_FUNC(property_event), NULL);
+# endif
 #endif
 }
 
@@ -2441,21 +2796,60 @@ mainwin_realize(GtkWidget *widget UNUSED, gpointer data UNUSED)
 create_blank_pointer(void)
 {
     GdkWindow	*root_window = NULL;
+#if GTK_CHECK_VERSION(3,0,0)
+    GdkPixbuf   *blank_mask;
+#else
     GdkPixmap	*blank_mask;
+#endif
     GdkCursor	*cursor;
     GdkColor	color = { 0, 0, 0, 0 };
+#if !GTK_CHECK_VERSION(3,0,0)
     char	blank_data[] = { 0x0 };
+#endif
 
 #ifdef HAVE_GTK_MULTIHEAD
+# if GTK_CHECK_VERSION(3,12,0)
+    {
+	GdkWindow * const win = gtk_widget_get_window(gui.mainwin);
+	GdkScreen * const scrn = gdk_window_get_screen(win);
+	root_window = gdk_screen_get_root_window(scrn);
+    }
+# else
     root_window = gtk_widget_get_root_window(gui.mainwin);
+# endif
 #endif
 
     /* Create a pseudo blank pointer, which is in fact one pixel by one pixel
      * in size. */
+#if GTK_CHECK_VERSION(3,0,0)
+    {
+	cairo_surface_t *surf;
+	cairo_t		*cr;
+
+	surf = cairo_image_surface_create(CAIRO_FORMAT_A1, 1, 1);
+	cr = cairo_create(surf);
+
+	cairo_set_source_rgb(cr,
+			     color.red / 65535.0,
+			     color.green / 65535.0,
+			     color.blue / 65535.0);
+	cairo_rectangle(cr, 0, 0, 1, 1);
+	cairo_fill(cr);
+	cairo_destroy(cr);
+
+	blank_mask = gdk_pixbuf_get_from_surface(surf, 0, 0, 1, 1);
+	cairo_surface_destroy(surf);
+
+	cursor = gdk_cursor_new_from_pixbuf(gdk_window_get_display(root_window),
+					    blank_mask, 0, 0);
+	g_object_unref(blank_mask);
+    }
+#else
     blank_mask = gdk_bitmap_create_from_data(root_window, blank_data, 1, 1);
     cursor = gdk_cursor_new_from_pixmap(blank_mask, blank_mask,
 					&color, &color, 0, 0);
     gdk_bitmap_unref(blank_mask);
+#endif
 
     return cursor;
 }
@@ -2473,12 +2867,22 @@ mainwin_screen_changed_cb(GtkWidget  *widget,
      * Recreate the invisible mouse cursor.
      */
     if (gui.blank_pointer != NULL)
+# if GTK_CHECK_VERSION(3,0,0)
+	g_object_unref(G_OBJECT(gui.blank_pointer));
+# else
 	gdk_cursor_unref(gui.blank_pointer);
+# endif
 
     gui.blank_pointer = create_blank_pointer();
 
+# if GTK_CHECK_VERSION(3,0,0)
+    if (gui.pointer_hidden && gtk_widget_get_window(gui.drawarea) != NULL)
+	gdk_window_set_cursor(gtk_widget_get_window(gui.drawarea),
+		gui.blank_pointer);
+# else
     if (gui.pointer_hidden && gui.drawarea->window != NULL)
 	gdk_window_set_cursor(gui.drawarea->window, gui.blank_pointer);
+# endif
 
     /*
      * Create a new PangoContext for this screen, and initialize it
@@ -2509,28 +2913,54 @@ mainwin_screen_changed_cb(GtkWidget  *widget,
 drawarea_realize_cb(GtkWidget *widget, gpointer data UNUSED)
 {
     GtkWidget *sbar;
+#if GTK_CHECK_VERSION(3,0,0)
+    GtkAllocation allocation;
+#endif
 
 #ifdef FEAT_XIM
     xim_init();
 #endif
     gui_mch_new_colors();
+#if GTK_CHECK_VERSION(3,0,0)
+    gui.surface = gdk_window_create_similar_surface(
+	    gtk_widget_get_window(widget),
+	    CAIRO_CONTENT_COLOR_ALPHA,
+	    gtk_widget_get_allocated_width(widget),
+	    gtk_widget_get_allocated_height(widget));
+#else
     gui.text_gc = gdk_gc_new(gui.drawarea->window);
+#endif
 
     gui.blank_pointer = create_blank_pointer();
     if (gui.pointer_hidden)
+#if GTK_CHECK_VERSION(3,0,0)
+	gdk_window_set_cursor(gtk_widget_get_window(widget), gui.blank_pointer);
+#else
 	gdk_window_set_cursor(widget->window, gui.blank_pointer);
+#endif
 
     /* get the actual size of the scrollbars, if they are realized */
     sbar = firstwin->w_scrollbars[SBAR_LEFT].id;
     if (!sbar || (!gui.which_scrollbars[SBAR_LEFT]
 				    && firstwin->w_scrollbars[SBAR_RIGHT].id))
 	sbar = firstwin->w_scrollbars[SBAR_RIGHT].id;
+#if GTK_CHECK_VERSION(3,0,0)
+    gtk_widget_get_allocation(sbar, &allocation);
+    if (sbar && gtk_widget_get_realized(sbar) && allocation.width)
+	gui.scrollbar_width = allocation.width;
+#else
     if (sbar && GTK_WIDGET_REALIZED(sbar) && sbar->allocation.width)
 	gui.scrollbar_width = sbar->allocation.width;
+#endif
 
     sbar = gui.bottom_sbar.id;
+#if GTK_CHECK_VERSION(3,0,0)
+    if (sbar && gtk_widget_get_realized(sbar) && allocation.height)
+	gui.scrollbar_height = allocation.height;
+#else
     if (sbar && GTK_WIDGET_REALIZED(sbar) && sbar->allocation.height)
 	gui.scrollbar_height = sbar->allocation.height;
+#endif
 }
 
 /*
@@ -2558,10 +2988,22 @@ drawarea_unrealize_cb(GtkWidget *widget UNUSED, gpointer data UNUSED)
     g_object_unref(gui.text_context);
     gui.text_context = NULL;
 
+#if GTK_CHECK_VERSION(3,0,0)
+    if (gui.surface != NULL)
+    {
+	cairo_surface_destroy(gui.surface);
+	gui.surface = NULL;
+    }
+#else
     g_object_unref(gui.text_gc);
     gui.text_gc = NULL;
+#endif
 
+#if GTK_CHECK_VERSION(3,0,0)
+    g_object_unref(G_OBJECT(gui.blank_pointer));
+#else
     gdk_cursor_unref(gui.blank_pointer);
+#endif
     gui.blank_pointer = NULL;
 }
 
@@ -2573,6 +3015,38 @@ drawarea_style_set_cb(GtkWidget	*widget UNUSED,
     gui_mch_new_colors();
 }
 
+#if GTK_CHECK_VERSION(3,0,0)
+    static gboolean
+drawarea_configure_event_cb(GtkWidget	      *widget,
+			    GdkEventConfigure *event,
+			    gpointer	       data UNUSED)
+{
+    static int cur_width = 0;
+    static int cur_height = 0;
+
+    g_return_val_if_fail(event
+	    && event->width >= 1 && event->height >= 1, TRUE);
+
+    if (event->width == cur_width && event->height == cur_height)
+	return TRUE;
+
+    cur_width = event->width;
+    cur_height = event->height;
+
+    if (gui.surface != NULL)
+	cairo_surface_destroy(gui.surface);
+
+    gui.surface = gdk_window_create_similar_surface(
+	    gtk_widget_get_window(widget),
+	    CAIRO_CONTENT_COLOR_ALPHA,
+	    event->width, event->height);
+
+    gtk_widget_queue_draw(widget);
+
+    return TRUE;
+}
+#endif
+
 /*
  * Callback routine for the "delete_event" signal on the toplevel window.
  * Tries to vim gracefully, or refuses to exit with changed buffers.
@@ -2592,7 +3066,7 @@ get_item_dimensions(GtkWidget *widget, GtkOrientation orientation)
 {
     GtkOrientation item_orientation = GTK_ORIENTATION_HORIZONTAL;
 
-#ifdef FEAT_GUI_GNOME
+# ifdef FEAT_GUI_GNOME
     if (using_gnome && widget != NULL)
     {
 	GtkWidget *parent;
@@ -2611,16 +3085,34 @@ get_item_dimensions(GtkWidget *widget, GtkOrientation orientation)
 	    item_orientation = bonobo_dock_item_get_orientation(dockitem);
 	}
     }
-#endif
+# endif
+# if GTK_CHECK_VERSION(3,0,0)
+    if (widget != NULL
+	    && item_orientation == orientation
+	    && gtk_widget_get_realized(widget)
+	    && gtk_widget_get_visible(widget))
+# else
     if (widget != NULL
 	    && item_orientation == orientation
 	    && GTK_WIDGET_REALIZED(widget)
 	    && GTK_WIDGET_VISIBLE(widget))
+# endif
     {
+# if GTK_CHECK_VERSION(3,0,0)
+	GtkAllocation allocation;
+
+	gtk_widget_get_allocation(widget, &allocation);
+
+	if (orientation == GTK_ORIENTATION_HORIZONTAL)
+	    return allocation.height;
+	else
+	    return allocation.width;
+# else
 	if (orientation == GTK_ORIENTATION_HORIZONTAL)
 	    return widget->allocation.height;
 	else
 	    return widget->allocation.width;
+# endif
     }
     return 0;
 }
@@ -2774,6 +3266,17 @@ icon_size_changed_foreach(GtkWidget *widget, gpointer user_data)
     {
 	GtkImage *image = (GtkImage *)widget;
 
+# if GTK_CHECK_VERSION(3,10,0)
+	if (gtk_image_get_storage_type(image) == GTK_IMAGE_ICON_NAME)
+	{
+	    const GtkIconSize icon_size = GPOINTER_TO_INT(user_data);
+	    const gchar *icon_name;
+
+	    gtk_image_get_icon_name(image, &icon_name, NULL);
+
+	    gtk_image_set_from_icon_name(image, icon_name, icon_size);
+	}
+# else
 	/* User-defined icons are stored in a GtkIconSet */
 	if (gtk_image_get_storage_type(image) == GTK_IMAGE_ICON_SET)
 	{
@@ -2787,6 +3290,7 @@ icon_size_changed_foreach(GtkWidget *widget, gpointer user_data)
 	    gtk_image_set_from_icon_set(image, icon_set, icon_size);
 	    gtk_icon_set_unref(icon_set);
 	}
+# endif
     }
     else if (GTK_IS_CONTAINER(widget))
     {
@@ -2815,7 +3319,9 @@ set_toolbar_style(GtkToolbar *toolbar)
 	style = GTK_TOOLBAR_ICONS;
 
     gtk_toolbar_set_style(toolbar, style);
+# if !GTK_CHECK_VERSION(3,0,0)
     gtk_toolbar_set_tooltips(toolbar, (toolbar_flags & TOOLBAR_TOOLTIPS) != 0);
+# endif
 
     switch (tbis_flags)
     {
@@ -2847,7 +3353,9 @@ set_toolbar_style(GtkToolbar *toolbar)
 #if defined(FEAT_GUI_TABLINE) || defined(PROTO)
 static int ignore_tabline_evt = FALSE;
 static GtkWidget *tabline_menu;
+# if !GTK_CHECK_VERSION(3,0,0)
 static GtkTooltips *tabline_tooltip;
+# endif
 static int clicked_page;	    /* page clicked in tab line */
 
 /*
@@ -2872,9 +3380,15 @@ add_tabline_menu_item(GtkWidget *menu, char_u *text, int resp)
     CONVERT_TO_UTF8_FREE(utf_text);
 
     gtk_container_add(GTK_CONTAINER(menu), item);
+# if GTK_CHECK_VERSION(3,0,0)
+    g_signal_connect(G_OBJECT(item), "activate",
+	    G_CALLBACK(tabline_menu_handler),
+	    GINT_TO_POINTER(resp));
+# else
     gtk_signal_connect(GTK_OBJECT(item), "activate",
 	    GTK_SIGNAL_FUNC(tabline_menu_handler),
 	    (gpointer)(long)resp);
+# endif
 }
 
 /*
@@ -2916,10 +3430,20 @@ on_tabline_menu(GtkWidget *widget, GdkEvent *event)
 	   )
 	    return TRUE;
 
+# if GTK_CHECK_VERSION(3,0,0)
+	tabwin = gui_gtk_window_at_position(gui.mainwin, &x, &y);
+# else
 	tabwin = gdk_window_at_pointer(&x, &y);
+# endif
+
 	gdk_window_get_user_data(tabwin, (gpointer)&tabwidget);
+# if GTK_CHECK_VERSION(3,0,0)
+	clicked_page = GPOINTER_TO_INT(g_object_get_data(G_OBJECT(tabwidget),
+							 "tab_num"));
+# else
 	clicked_page = (int)(long)gtk_object_get_user_data(
 						       GTK_OBJECT(tabwidget));
+# endif
 
 	/* If the event was generated for 3rd button popup the menu. */
 	if (bevent->button == 3)
@@ -2950,7 +3474,11 @@ on_tabline_menu(GtkWidget *widget, GdkEvent *event)
     static void
 on_select_tab(
 	GtkNotebook	*notebook UNUSED,
+# if GTK_CHECK_VERSION(3,0,0)
+	gpointer	*page UNUSED,
+# else
 	GtkNotebookPage *page UNUSED,
+# endif
 	gint		idx,
 	gpointer	data UNUSED)
 {
@@ -2975,7 +3503,11 @@ gui_mch_show_tabline(int showit)
 	gtk_notebook_set_show_tabs(GTK_NOTEBOOK(gui.tabline), showit);
 	update_window_manager_hints(0, 0);
 	if (showit)
+# if GTK_CHECK_VERSION(3,0,0)
+	    gtk_widget_set_can_focus(GTK_WIDGET(gui.tabline), FALSE);
+# else
 	    GTK_WIDGET_UNSET_FLAGS(GTK_WIDGET(gui.tabline), GTK_CAN_FOCUS);
+# endif
     }