Fudge GtkScrollable for gtk2.

Yes, the GtkScrollable interface is implemented by more than just
GtkLayout, but it turns out GtkLayout is the only thing Evolution
uses the GtkScrollable API for on the gtk3 branch.

6 files changed, 87 insertions, 85 deletions

diff --git a/widgets/table/e-cell-combo.c b/widgets/table/e-cell-combo.c
index 6e1eb5ca80..c06e5450e8 100644
--- a/widgets/table/e-cell-combo.c
+++ b/widgets/table/e-cell-combo.c
@@ -426,8 +426,8 @@ e_cell_combo_get_popup_pos		(ECellCombo	*ecc,
 	/* The ETable positions don't include the grid lines, I think, so we add 1. */
 	*y += y1 + 1
 		- (gint)gtk_adjustment_get_value (
-			gtk_layout_get_vadjustment (
-			&((GnomeCanvas *)canvas)->layout))
+			gtk_scrollable_get_vadjustment (
+			GTK_SCROLLABLE (&((GnomeCanvas *)canvas)->layout)))
 		+ ((GnomeCanvas *)canvas)->zoom_yofs;
 
 	widget = gtk_scrolled_window_get_vscrollbar (popup);
diff --git a/widgets/table/e-cell-date-edit.c b/widgets/table/e-cell-date-edit.c
index 005f7a63e4..31d63d97cf 100644
--- a/widgets/table/e-cell-date-edit.c
+++ b/widgets/table/e-cell-date-edit.c
@@ -648,7 +648,7 @@ e_cell_date_edit_get_popup_pos		(ECellDateEdit	*ecde,
 	GtkWidget *canvas = GTK_WIDGET (GNOME_CANVAS_ITEM (eti)->canvas);
 	GtkRequisition popup_requisition;
 	GtkAdjustment *adjustment;
-	GtkLayout *layout;
+	GtkScrollable *scrollable;
 	GdkWindow *window;
 	gint avail_height, screen_width, column_width, row_height;
 	gdouble x1, y1, wx, wy;
@@ -677,8 +677,8 @@ e_cell_date_edit_get_popup_pos		(ECellDateEdit	*ecde,
 	*x += x1;
 	/* The ETable positions don't include the grid lines, I think, so we
 	   add 1. */
-	layout = &GNOME_CANVAS (canvas)->layout;
-	adjustment = gtk_layout_get_vadjustment (layout);
+	scrollable = GTK_SCROLLABLE (&GNOME_CANVAS (canvas)->layout);
+	adjustment = gtk_scrollable_get_vadjustment (scrollable);
 	value = (gint) gtk_adjustment_get_value (adjustment);
 	*y += y1 + 1 - value + ((GnomeCanvas *)canvas)->zoom_yofs;
 
diff --git a/widgets/table/e-table-field-chooser.c b/widgets/table/e-table-field-chooser.c
index f0e3ece84c..374507e1ee 100644
--- a/widgets/table/e-table-field-chooser.c
+++ b/widgets/table/e-table-field-chooser.c
@@ -34,6 +34,9 @@
 #include "e-table-field-chooser.h"
 #include "e-table-field-chooser-item.h"
 
+/* backward-compatibility cruft */
+#include "e-util/gtk-compat.h"
+
 static void e_table_field_chooser_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
 static void e_table_field_chooser_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
 static void e_table_field_chooser_dispose (GObject *object);
@@ -86,8 +89,8 @@ ensure_nonzero_step_increments (ETableFieldChooser *etfc)
 {
 	GtkAdjustment *va, *ha;
 
-	va = gtk_layout_get_vadjustment (GTK_LAYOUT (etfc->canvas));
-	ha = gtk_layout_get_hadjustment (GTK_LAYOUT (etfc->canvas));
+	va = gtk_scrollable_get_vadjustment (GTK_SCROLLABLE (etfc->canvas));
+	ha = gtk_scrollable_get_hadjustment (GTK_SCROLLABLE (etfc->canvas));
 
 	/*
 	  it looks pretty complicated to get height of column header
diff --git a/widgets/table/e-table-header-item.c b/widgets/table/e-table-header-item.c
index 7fda0066af..1c97826ef2 100644
--- a/widgets/table/e-table-header-item.c
+++ b/widgets/table/e-table-header-item.c
@@ -506,10 +506,10 @@ ethi_add_drop_marker (ETableHeaderItem *ethi, gint col, gboolean recreate)
 	window = gtk_widget_get_window (GTK_WIDGET (canvas));
 	gdk_window_get_origin (window, &rx, &ry);
 
-	adjustment = gtk_layout_get_hadjustment (GTK_LAYOUT (canvas));
+	adjustment = gtk_scrollable_get_hadjustment (GTK_SCROLLABLE (canvas));
 	rx -= gtk_adjustment_get_value (adjustment);
 
-	adjustment = gtk_layout_get_vadjustment (GTK_LAYOUT (canvas));
+	adjustment = gtk_scrollable_get_vadjustment (GTK_SCROLLABLE (canvas));
 	ry -= gtk_adjustment_get_value (adjustment);
 
 	gtk_window_move (
@@ -625,8 +625,8 @@ scroll_timeout (gpointer data)
 {
 	ETableHeaderItem *ethi = data;
 	gint dx = 0;
-	GtkLayout *layout;
 	GtkAdjustment *adjustment;
+	GtkScrollable *scrollable;
 	gdouble hadjustment_value;
 	gdouble vadjustment_value;
 	gdouble page_size;
@@ -639,17 +639,17 @@ scroll_timeout (gpointer data)
 	if (ethi->scroll_direction & ET_SCROLL_LEFT)
 		dx -= 20;
 
-	layout = GTK_LAYOUT (GNOME_CANVAS_ITEM (ethi)->canvas);
+	scrollable = GTK_SCROLLABLE (GNOME_CANVAS_ITEM (ethi)->canvas);
 
-	adjustment = gtk_layout_get_hadjustment (layout);
+	adjustment = gtk_scrollable_get_hadjustment (scrollable);
 	hadjustment_value = gtk_adjustment_get_value (adjustment);
 
-	adjustment = gtk_layout_get_vadjustment (layout);
+	adjustment = gtk_scrollable_get_vadjustment (scrollable);
 	vadjustment_value = gtk_adjustment_get_value (adjustment);
 
 	value = hadjustment_value;
 
-	adjustment = gtk_layout_get_hadjustment (layout);
+	adjustment = gtk_scrollable_get_hadjustment (scrollable);
 	page_size = gtk_adjustment_get_page_size (adjustment);
 	lower = gtk_adjustment_get_lower (adjustment);
 	upper = gtk_adjustment_get_upper (adjustment);
@@ -759,10 +759,10 @@ ethi_drag_motion (GtkWidget *widget,
 	ethi->last_drop_context = context;
 	context_connect (ethi, context);
 
-	adjustment = gtk_layout_get_hadjustment (GTK_LAYOUT (widget));
+	adjustment = gtk_scrollable_get_hadjustment (GTK_SCROLLABLE (widget));
 	hadjustment_value = gtk_adjustment_get_value (adjustment);
 
-	adjustment = gtk_layout_get_vadjustment (GTK_LAYOUT (widget));
+	adjustment = gtk_scrollable_get_vadjustment (GTK_SCROLLABLE (widget));
 	vadjustment_value = gtk_adjustment_get_value (adjustment);
 
 	do_drag_motion (
diff --git a/widgets/table/e-table.c b/widgets/table/e-table.c
index 4dc13bfb1a..952bf900b8 100644
--- a/widgets/table/e-table.c
+++ b/widgets/table/e-table.c
@@ -838,13 +838,13 @@ group_key_press (ETableGroup *etg, gint row, gint col, GdkEvent *event, ETable *
 	GdkEventKey *key = (GdkEventKey *) event;
 	gint y, row_local, col_local;
 	GtkAdjustment *adjustment;
-	GtkLayout *layout;
+	GtkScrollable *scrollable;
 	gdouble page_size;
 	gdouble upper;
 	gdouble value;
 
-	layout = GTK_LAYOUT (et->table_canvas);
-	adjustment = gtk_layout_get_vadjustment (layout);
+	scrollable = GTK_SCROLLABLE (et->table_canvas);
+	adjustment = gtk_scrollable_get_vadjustment (scrollable);
 
 	switch (key->keyval) {
 	case GDK_KEY_Page_Down:
@@ -1607,8 +1607,8 @@ et_real_construct (ETable *e_table, ETableModel *etm, ETableExtras *ete,
 	gint row = 0;
 	gint col_count, i;
 	GValue *val;
-	GtkLayout *layout;
 	GtkAdjustment *adjustment;
+	GtkScrollable *scrollable;
 
 	val = g_new0 (GValue, 1);
 	g_value_init (val, G_TYPE_OBJECT);
@@ -1689,12 +1689,12 @@ et_real_construct (ETable *e_table, ETableModel *etm, ETableExtras *ete,
 	e_table_setup_table (e_table, e_table->full_header, e_table->header, etm);
 	e_table_fill_table (e_table, etm);
 
-	layout = GTK_LAYOUT (e_table->table_canvas);
+	scrollable = GTK_SCROLLABLE (e_table->table_canvas);
 
-	adjustment = gtk_layout_get_vadjustment (layout);
+	adjustment = gtk_scrollable_get_vadjustment (scrollable);
 	gtk_adjustment_set_step_increment (adjustment, 20);
 
-	adjustment = gtk_layout_get_hadjustment (layout);
+	adjustment = gtk_scrollable_get_hadjustment (scrollable);
 	gtk_adjustment_set_step_increment (adjustment, 20);
 
 	if (!specification->no_headers) {
@@ -2331,15 +2331,15 @@ set_scroll_adjustments   (ETable *table,
 		gtk_adjustment_set_step_increment (hadjustment, 20);
 
 	if (table->table_canvas != NULL) {
-		gtk_layout_set_hadjustment (
-			GTK_LAYOUT (table->table_canvas), hadjustment);
-		gtk_layout_set_vadjustment (
-			GTK_LAYOUT (table->table_canvas), vadjustment);
+		gtk_scrollable_set_hadjustment (
+			GTK_SCROLLABLE (table->table_canvas), hadjustment);
+		gtk_scrollable_set_vadjustment (
+			GTK_SCROLLABLE (table->table_canvas), vadjustment);
 	}
 
 	if (table->header_canvas != NULL)
-		gtk_layout_set_hadjustment (
-			GTK_LAYOUT (table->header_canvas), hadjustment);
+		gtk_scrollable_set_hadjustment (
+			GTK_SCROLLABLE (table->header_canvas), hadjustment);
 }
 
 /**
@@ -2469,7 +2469,7 @@ e_table_get_cell_at (ETable *table,
 		     gint *row_return, gint *col_return)
 {
 	GtkAdjustment *adjustment;
-	GtkLayout *layout;
+	GtkScrollable *scrollable;
 
 	g_return_if_fail (E_IS_TABLE (table));
 	g_return_if_fail (row_return != NULL);
@@ -2478,12 +2478,12 @@ e_table_get_cell_at (ETable *table,
 	/* FIXME it would be nice if it could handle a NULL row_return or
 	 * col_return gracefully.  */
 
-	layout = GTK_LAYOUT (table->table_canvas);
+	scrollable = GTK_SCROLLABLE (table->table_canvas);
 
-	adjustment = gtk_layout_get_hadjustment (layout);
+	adjustment = gtk_scrollable_get_hadjustment (scrollable);
 	x += gtk_adjustment_get_value (adjustment);
 
-	adjustment = gtk_layout_get_vadjustment (layout);
+	adjustment = gtk_scrollable_get_vadjustment (scrollable);
 	y += gtk_adjustment_get_value (adjustment);
 
 	e_table_group_compute_location (
@@ -2511,26 +2511,26 @@ e_table_get_cell_geometry (ETable *table,
 			   gint *x_return, gint *y_return,
 			   gint *width_return, gint *height_return)
 {
-	GtkAdjustment *adjustment;
 	GtkAllocation allocation;
-	GtkLayout *layout;
+	GtkAdjustment *adjustment;
+	GtkScrollable *scrollable;
 
 	g_return_if_fail (E_IS_TABLE (table));
 
-	layout = GTK_LAYOUT (table->table_canvas);
+	scrollable = GTK_SCROLLABLE (table->table_canvas);
 
 	e_table_group_get_cell_geometry (
 		table->group, &row, &col, x_return, y_return,
 		width_return, height_return);
 
 	if (x_return && table->table_canvas) {
-		adjustment = gtk_layout_get_hadjustment (layout);
+		adjustment = gtk_scrollable_get_hadjustment (scrollable);
 		(*x_return) -= gtk_adjustment_get_value (adjustment);
 	}
 
 	if (y_return) {
 		if (table->table_canvas) {
-			adjustment = gtk_layout_get_vadjustment (layout);
+			adjustment = gtk_scrollable_get_vadjustment (scrollable);
 			(*y_return) -= gtk_adjustment_get_value (adjustment);
 		}
 
@@ -2692,16 +2692,16 @@ e_table_drag_highlight (ETable *table,
 			gint     row,
 			gint     col)
 {
-	GtkAdjustment *adjustment;
 	GtkAllocation allocation;
-	GtkLayout *layout;
+	GtkAdjustment *adjustment;
+	GtkScrollable *scrollable;
 	GtkStyle *style;
 
 	g_return_if_fail (E_IS_TABLE (table));
 
-	layout = GTK_LAYOUT (table->table_canvas);
+	scrollable = GTK_SCROLLABLE (table->table_canvas);
 	style = gtk_widget_get_style (GTK_WIDGET (table));
-	gtk_widget_get_allocation (GTK_WIDGET (layout), &allocation);
+	gtk_widget_get_allocation (GTK_WIDGET (scrollable), &allocation);
 
 	if (row != -1) {
 		gint x, y, width, height;
@@ -2711,11 +2711,11 @@ e_table_drag_highlight (ETable *table,
 			width = allocation.width;
 		} else {
 			e_table_get_cell_geometry (table, row, col, &x, &y, &width, &height);
-			adjustment = gtk_layout_get_hadjustment (layout);
+			adjustment = gtk_scrollable_get_hadjustment (scrollable);
 			x += gtk_adjustment_get_value (adjustment);
 		}
 
-		adjustment = gtk_layout_get_vadjustment (layout);
+		adjustment = gtk_scrollable_get_vadjustment (scrollable);
 		y += gtk_adjustment_get_value (adjustment);
 
 		if (table->drop_highlight == NULL) {
@@ -3025,7 +3025,7 @@ scroll_timeout (gpointer data)
 	ETable *et = data;
 	gint dx = 0, dy = 0;
 	GtkAdjustment *adjustment;
-	GtkLayout *layout;
+	GtkScrollable *scrollable;
 	gdouble old_h_value;
 	gdouble new_h_value;
 	gdouble old_v_value;
@@ -3044,9 +3044,9 @@ scroll_timeout (gpointer data)
 	if (et->scroll_direction & ET_SCROLL_LEFT)
 		dx -= 20;
 
-	layout = GTK_LAYOUT (et->table_canvas);
+	scrollable = GTK_SCROLLABLE (et->table_canvas);
 
-	adjustment = gtk_layout_get_hadjustment (layout);
+	adjustment = gtk_scrollable_get_hadjustment (scrollable);
 
 	lower = gtk_adjustment_get_lower (adjustment);
 	upper = gtk_adjustment_get_upper (adjustment);
@@ -3057,7 +3057,7 @@ scroll_timeout (gpointer data)
 
 	gtk_adjustment_set_value (adjustment, new_h_value);
 
-	adjustment = gtk_layout_get_vadjustment (layout);
+	adjustment = gtk_scrollable_get_vadjustment (scrollable);
 
 	lower = gtk_adjustment_get_lower (adjustment);
 	upper = gtk_adjustment_get_upper (adjustment);
diff --git a/widgets/table/e-tree.c b/widgets/table/e-tree.c
index 8d718b0235..f19a9a7cfc 100644
--- a/widgets/table/e-tree.c
+++ b/widgets/table/e-tree.c
@@ -759,7 +759,7 @@ scroll_to_cursor (ETree *e_tree)
 {
 	ETreePath path;
 	GtkAdjustment *adjustment;
-	GtkLayout *layout;
+	GtkScrollable *scrollable;
 	gint x, y, w, h;
 	gdouble page_size;
 	gdouble lower;
@@ -779,8 +779,8 @@ scroll_to_cursor (ETree *e_tree)
 				&row, &col, &x, &y, &w, &h);
 	}
 
-	layout = GTK_LAYOUT (e_tree->priv->table_canvas);
-	adjustment = gtk_layout_get_vadjustment (layout);
+	scrollable = GTK_SCROLLABLE (e_tree->priv->table_canvas);
+	adjustment = gtk_scrollable_get_vadjustment (scrollable);
 
 	page_size = gtk_adjustment_get_page_size (adjustment);
 	lower = gtk_adjustment_get_lower (adjustment);
@@ -928,13 +928,13 @@ item_key_press (ETableItem *eti, gint row, gint col, GdkEvent *event, ETree *et)
 	ETreePath path;
 	gint y, row_local, col_local;
 	GtkAdjustment *adjustment;
-	GtkLayout *layout;
+	GtkScrollable *scrollable;
 	gdouble page_size;
 	gdouble upper;
 	gdouble value;
 
-	layout = GTK_LAYOUT (et->priv->table_canvas);
-	adjustment = gtk_layout_get_vadjustment (layout);
+	scrollable = GTK_SCROLLABLE (et->priv->table_canvas);
+	adjustment = gtk_scrollable_get_vadjustment (scrollable);
 
 	page_size = gtk_adjustment_get_page_size (adjustment);
 	upper = gtk_adjustment_get_upper (adjustment);
@@ -1514,7 +1514,7 @@ et_real_construct (ETree *e_tree, ETreeModel *etm, ETableExtras *ete,
 		   ETableSpecification *specification, ETableState *state)
 {
 	GtkAdjustment *adjustment;
-	GtkLayout *layout;
+	GtkScrollable *scrollable;
 	gint row = 0;
 
 	if (ete)
@@ -1566,12 +1566,12 @@ et_real_construct (ETree *e_tree, ETreeModel *etm, ETableExtras *ete,
 	}
 	e_tree_setup_table (e_tree);
 
-	layout = GTK_LAYOUT (e_tree->priv->table_canvas);
+	scrollable = GTK_SCROLLABLE (e_tree->priv->table_canvas);
 
-	adjustment = gtk_layout_get_vadjustment (layout);
+	adjustment = gtk_scrollable_get_vadjustment (scrollable);
 	gtk_adjustment_set_step_increment (adjustment, 20);
 
-	adjustment = gtk_layout_get_hadjustment (layout);
+	adjustment = gtk_scrollable_get_hadjustment (scrollable);
 	gtk_adjustment_set_step_increment (adjustment, 20);
 
 	if (!specification->no_headers) {
@@ -2036,17 +2036,16 @@ set_scroll_adjustments   (ETree *tree,
 		gtk_adjustment_set_step_increment (hadjustment, 20);
 
 	if (tree->priv) {
-		GtkLayout *layout;
+		GtkScrollable *scrollable;
 
-		layout = GTK_LAYOUT (tree->priv->table_canvas);
+		scrollable = GTK_SCROLLABLE (tree->priv->table_canvas);
+		gtk_scrollable_set_hadjustment (scrollable, hadjustment);
+		gtk_scrollable_set_vadjustment (scrollable, vadjustment);
 
-		gtk_layout_set_hadjustment (layout, hadjustment);
-		gtk_layout_set_vadjustment (layout, vadjustment);
-
-		if (tree->priv->header_canvas != NULL)
-			gtk_layout_set_hadjustment (
-				GTK_LAYOUT (tree->priv->header_canvas),
-				hadjustment);
+		if (tree->priv->header_canvas != NULL) {
+			scrollable = GTK_SCROLLABLE (tree->priv->header_canvas);
+			gtk_scrollable_set_hadjustment (scrollable, hadjustment);
+		}
 	}
 }
 
@@ -2485,16 +2484,16 @@ e_tree_drag_highlight (ETree *tree,
 		       gint     row,
 		       gint     col)
 {
-	GtkAdjustment *adjustment;
 	GtkAllocation allocation;
-	GtkLayout *layout;
+	GtkAdjustment *adjustment;
+	GtkScrollable *scrollable;
 	GtkStyle *style;
 
 	g_return_if_fail (E_IS_TREE (tree));
 
-	layout = GTK_LAYOUT (tree->priv->table_canvas);
+	scrollable = GTK_SCROLLABLE (tree->priv->table_canvas);
 	style = gtk_widget_get_style (GTK_WIDGET (tree));
-	gtk_widget_get_allocation (GTK_WIDGET (layout), &allocation);
+	gtk_widget_get_allocation (GTK_WIDGET (scrollable), &allocation);
 
 	if (row != -1) {
 		gint x, y, width, height;
@@ -2504,11 +2503,11 @@ e_tree_drag_highlight (ETree *tree,
 			width = allocation.width;
 		} else {
 			e_tree_get_cell_geometry (tree, row, col, &x, &y, &width, &height);
-			adjustment = gtk_layout_get_hadjustment (layout);
+			adjustment = gtk_scrollable_get_hadjustment (scrollable);
 			x += gtk_adjustment_get_value (adjustment);
 		}
 
-		adjustment = gtk_layout_get_vadjustment (layout);
+		adjustment = gtk_scrollable_get_vadjustment (scrollable);
 		y += gtk_adjustment_get_value (adjustment);
 
 		if (tree->priv->drop_highlight == NULL) {
@@ -2731,7 +2730,7 @@ e_tree_get_cell_at (ETree *tree,
 		     gint *row_return, gint *col_return)
 {
 	GtkAdjustment *adjustment;
-	GtkLayout *layout;
+	GtkScrollable *scrollable;
 
 	g_return_if_fail (E_IS_TREE (tree));
 	g_return_if_fail (row_return != NULL);
@@ -2745,12 +2744,12 @@ e_tree_get_cell_at (ETree *tree,
 	if (col_return)
 		*col_return = -1;
 
-	layout = GTK_LAYOUT (tree->priv->table_canvas);
+	scrollable = GTK_SCROLLABLE (tree->priv->table_canvas);
 
-	adjustment = gtk_layout_get_hadjustment (layout);
+	adjustment = gtk_scrollable_get_hadjustment (scrollable);
 	x += gtk_adjustment_get_value (adjustment);
 
-	adjustment = gtk_layout_get_vadjustment (layout);
+	adjustment = gtk_scrollable_get_vadjustment (scrollable);
 	y += gtk_adjustment_get_value (adjustment);
 
 	e_table_item_compute_location (
@@ -2779,7 +2778,7 @@ e_tree_get_cell_geometry (ETree *tree,
 			  gint *width_return, gint *height_return)
 {
 	GtkAdjustment *adjustment;
-	GtkLayout *layout;
+	GtkScrollable *scrollable;
 
 	g_return_if_fail (E_IS_TREE (tree));
 	g_return_if_fail (row >= 0);
@@ -2793,15 +2792,15 @@ e_tree_get_cell_geometry (ETree *tree,
 		&row, &col, x_return, y_return,
 		width_return, height_return);
 
-	layout = GTK_LAYOUT (tree->priv->table_canvas);
+	scrollable = GTK_SCROLLABLE (tree->priv->table_canvas);
 
 	if (x_return) {
-		adjustment = gtk_layout_get_hadjustment (layout);
+		adjustment = gtk_scrollable_get_hadjustment (scrollable);
 		(*x_return) -= gtk_adjustment_get_value (adjustment);
 	}
 
 	if (y_return) {
-		adjustment = gtk_layout_get_vadjustment (layout);
+		adjustment = gtk_scrollable_get_vadjustment (scrollable);
 		(*y_return) -= gtk_adjustment_get_value (adjustment);
 	}
 }
@@ -2915,7 +2914,7 @@ scroll_timeout (gpointer data)
 	ETree *et = data;
 	gint dx = 0, dy = 0;
 	GtkAdjustment *adjustment;
-	GtkLayout *layout;
+	GtkScrollable *scrollable;
 	gdouble old_h_value;
 	gdouble new_h_value;
 	gdouble old_v_value;
@@ -2934,9 +2933,9 @@ scroll_timeout (gpointer data)
 	if (et->priv->scroll_direction & ET_SCROLL_LEFT)
 		dx -= 20;
 
-	layout = GTK_LAYOUT (et->priv->table_canvas);
+	scrollable = GTK_SCROLLABLE (et->priv->table_canvas);
 
-	adjustment = gtk_layout_get_hadjustment (layout);
+	adjustment = gtk_scrollable_get_hadjustment (scrollable);
 
 	page_size = gtk_adjustment_get_page_size (adjustment);
 	lower = gtk_adjustment_get_lower (adjustment);
@@ -2947,7 +2946,7 @@ scroll_timeout (gpointer data)
 
 	gtk_adjustment_set_value (adjustment, new_h_value);
 
-	adjustment = gtk_layout_get_vadjustment (layout);
+	adjustment = gtk_scrollable_get_vadjustment (scrollable);
 
 	page_size = gtk_adjustment_get_page_size (adjustment);
 	lower = gtk_adjustment_get_lower (adjustment);