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menu: Show scroll arrows if necessary

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This commit is contained in:
Timm Bäder 2018-09-17 11:19:57 +02:00
parent 7b7296410e
commit 2f6e998a27
1 changed files with 28 additions and 5 deletions
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33
gtk/gtkmenu.c
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@ -2522,6 +2522,19 @@ gtk_menu_size_allocate (GtkWidget *widget,
for (i = 0; i < priv->heights_length; i++)
priv->requested_height += priv->heights[i];
/* Show scroll arrows if necessary */
if (priv->requested_height > allocation->height)
{
gtk_widget_set_child_visible (priv->top_arrow_widget, TRUE);
gtk_widget_set_child_visible (priv->bottom_arrow_widget, TRUE);
}
else
{
gtk_widget_set_child_visible (priv->top_arrow_widget, FALSE);
gtk_widget_set_child_visible (priv->bottom_arrow_widget, FALSE);
}
x = allocation->x;
y = allocation->y;
width = allocation->width;
@ -2546,9 +2559,6 @@ gtk_menu_size_allocate (GtkWidget *widget,
if (gtk_widget_get_child_visible (priv->bottom_arrow_widget))
gtk_widget_size_allocate (priv->bottom_arrow_widget, &arrow_allocation, -1);
width = MAX (1, width);
height = MAX (1, height);
if (menu_shell->priv->children)
{
gint base_width = width / gtk_menu_get_n_columns (menu);
@ -2599,15 +2609,28 @@ static void
gtk_menu_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
{
GtkMenuPrivate *priv = gtk_menu_get_instance_private (GTK_MENU (widget));
GtkBorder arrows_border;
get_arrows_border (GTK_MENU (widget), &arrows_border);
/* TODO: This snapshots the arrow widgets twice. */
if (gtk_widget_get_child_visible (priv->top_arrow_widget))
gtk_widget_snapshot_child (widget, priv->top_arrow_widget, snapshot);
gtk_snapshot_push_clip (snapshot,
&GRAPHENE_RECT_INIT(
0, 0,
0, arrows_border.top,
gtk_widget_get_width (widget),
gtk_widget_get_height (widget)));
gtk_widget_get_height (widget) - arrows_border.top - arrows_border.bottom));
GTK_WIDGET_CLASS (gtk_menu_parent_class)->snapshot (widget, snapshot);
gtk_snapshot_pop (snapshot);
if (gtk_widget_get_child_visible (priv->bottom_arrow_widget))
gtk_widget_snapshot_child (widget, priv->bottom_arrow_widget, snapshot);
}
static void