From 8cee572ac34d29d852dfabbf4f42c4843fb5b892 Mon Sep 17 00:00:00 2001 From: Marco Melorio Date: Fri, 10 Jun 2022 14:39:24 +0200 Subject: [PATCH] listbase: Add "reversed" property --- gtk/gtklistbase.c | 93 ++++++++++++++++++++++++++++++++++++++++------- 1 file changed, 80 insertions(+), 13 deletions(-) diff --git a/gtk/gtklistbase.c b/gtk/gtklistbase.c index 85827363ced..b23e5a58078 100644 --- a/gtk/gtklistbase.c +++ b/gtk/gtklistbase.c @@ -64,6 +64,7 @@ struct _GtkListBasePrivate GtkListItemManager *item_manager; GtkSelectionModel *model; GtkOrientation orientation; + gboolean reversed; GtkAdjustment *adjustment[2]; GtkScrollablePolicy scroll_policy[2]; @@ -94,6 +95,7 @@ enum PROP_HADJUSTMENT, PROP_HSCROLL_POLICY, PROP_ORIENTATION, + PROP_REVERSED, PROP_VADJUSTMENT, PROP_VSCROLL_POLICY, @@ -145,10 +147,23 @@ static gboolean gtk_list_base_adjustment_is_flipped (GtkListBase *self, GtkOrientation orientation) { - if (orientation == GTK_ORIENTATION_VERTICAL) - return FALSE; + GtkListBasePrivate *priv = gtk_list_base_get_instance_private (self); + gboolean rtl = gtk_widget_get_direction (GTK_WIDGET (self)) == GTK_TEXT_DIR_RTL; - return gtk_widget_get_direction (GTK_WIDGET (self)) == GTK_TEXT_DIR_RTL; + if (priv->orientation == GTK_ORIENTATION_VERTICAL) + { + if (orientation == GTK_ORIENTATION_VERTICAL) + return priv->reversed; + else + return rtl; + } + else + { + if (orientation == GTK_ORIENTATION_HORIZONTAL) + return rtl ^ priv->reversed; + else + return false; + } } static void @@ -317,8 +332,7 @@ gtk_list_base_move_focus (GtkListBase *self, { GtkListBasePrivate *priv = gtk_list_base_get_instance_private (self); - if (orientation == GTK_ORIENTATION_HORIZONTAL && - gtk_widget_get_direction (GTK_WIDGET (self)) == GTK_TEXT_DIR_RTL) + if (gtk_list_base_adjustment_is_flipped (self, orientation)) steps = -steps; if (orientation == priv->orientation) @@ -620,6 +634,10 @@ gtk_list_base_get_property (GObject *object, g_value_set_enum (value, priv->scroll_policy[GTK_ORIENTATION_HORIZONTAL]); break; + case PROP_REVERSED: + g_value_set_boolean (value, priv->reversed); + break; + case PROP_ORIENTATION: g_value_set_enum (value, priv->orientation); break; @@ -683,6 +701,22 @@ gtk_list_base_set_scroll_policy (GtkListBase *self, : properties[PROP_VSCROLL_POLICY]); } +static void +gtk_list_base_set_reversed (GtkListBase *self, + gboolean reversed) +{ + GtkListBasePrivate *priv = gtk_list_base_get_instance_private (self); + + if (priv->reversed == reversed) + return; + + priv->reversed = reversed; + + gtk_widget_queue_resize (GTK_WIDGET (self)); + + g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_REVERSED]); +} + static void gtk_list_base_set_property (GObject *object, guint property_id, @@ -702,6 +736,10 @@ gtk_list_base_set_property (GObject *object, gtk_list_base_set_scroll_policy (self, GTK_ORIENTATION_HORIZONTAL, g_value_get_enum (value)); break; + case PROP_REVERSED: + gtk_list_base_set_reversed (self, g_value_get_boolean (value)); + break; + case PROP_ORIENTATION: { GtkOrientation orientation = g_value_get_enum (value); @@ -1141,6 +1179,18 @@ gtk_list_base_class_init (GtkListBaseClass *klass) g_param_spec_override ("vscroll-policy", g_object_interface_find_property (iface, "vscroll-policy")); + /** + * GtkListBase:reversed: + * + * Whether to show the list in reverse or not. + * + * Since: 4.8 + */ + properties[PROP_REVERSED] = + g_param_spec_boolean ("reversed", NULL, NULL, + FALSE, + G_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY); + /** * GtkListBase:orientation: * @@ -1318,7 +1368,7 @@ update_autoscroll (GtkListBase *self, else delta_x = 0; - if (gtk_widget_get_direction (GTK_WIDGET (self)) == GTK_TEXT_DIR_RTL) + if (gtk_list_base_adjustment_is_flipped (self, GTK_ORIENTATION_HORIZONTAL)) delta_x = - delta_x; height = gtk_widget_get_height (GTK_WIDGET (self)); @@ -1330,6 +1380,9 @@ update_autoscroll (GtkListBase *self, else delta_y = 0; + if (gtk_list_base_adjustment_is_flipped (self, GTK_ORIENTATION_VERTICAL)) + delta_y = - delta_y; + if (delta_x != 0 || delta_y != 0) add_autoscroll (self, delta_x, delta_y); else @@ -1365,14 +1418,20 @@ gtk_list_base_size_allocate_child (GtkListBase *self, if (gtk_list_base_get_orientation (GTK_LIST_BASE (self)) == GTK_ORIENTATION_VERTICAL) { - if (_gtk_widget_get_direction (GTK_WIDGET (self)) == GTK_TEXT_DIR_LTR) + if (gtk_list_base_adjustment_is_flipped(self, GTK_ORIENTATION_HORIZONTAL)) + { + child_allocation.x = self_width - x - width; + } + else { child_allocation.x = x; - child_allocation.y = y; + } + if (gtk_list_base_adjustment_is_flipped(self, GTK_ORIENTATION_VERTICAL)) + { + child_allocation.y = self_height - y - height; } else { - child_allocation.x = self_width - x - width; child_allocation.y = y; } child_allocation.width = width; @@ -1380,14 +1439,20 @@ gtk_list_base_size_allocate_child (GtkListBase *self, } else { - if (_gtk_widget_get_direction (GTK_WIDGET (self)) == GTK_TEXT_DIR_LTR) + if (gtk_list_base_adjustment_is_flipped(self, GTK_ORIENTATION_HORIZONTAL)) + { + child_allocation.x = self_width - y - height; + } + else { child_allocation.x = y; - child_allocation.y = x; + } + if (gtk_list_base_adjustment_is_flipped(self, GTK_ORIENTATION_VERTICAL)) + { + child_allocation.y = self_height - x - width; } else { - child_allocation.x = self_width - y - height; child_allocation.y = x; } child_allocation.width = height; @@ -1423,8 +1488,10 @@ gtk_list_base_widget_to_list (GtkListBase *self, GtkListBasePrivate *priv = gtk_list_base_get_instance_private (self); GtkWidget *widget = GTK_WIDGET (self); - if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) + if (gtk_list_base_adjustment_is_flipped (self, GTK_ORIENTATION_HORIZONTAL)) x_widget = gtk_widget_get_width (widget) - x_widget; + if (gtk_list_base_adjustment_is_flipped (self, GTK_ORIENTATION_VERTICAL)) + y_widget = gtk_widget_get_height (widget) - y_widget; gtk_list_base_get_adjustment_values (self, OPPOSITE_ORIENTATION (priv->orientation), across_out, NULL, NULL); gtk_list_base_get_adjustment_values (self, priv->orientation, along_out, NULL, NULL); -- GitLab