From e4283f6d48b98e764b988b43bbc86b9d52e6ec94 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:54:43 +0200 Subject: Adding upstream version 43.9. Signed-off-by: Daniel Baumann --- src/st/st-bin.c | 404 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 404 insertions(+) create mode 100644 src/st/st-bin.c (limited to 'src/st/st-bin.c') diff --git a/src/st/st-bin.c b/src/st/st-bin.c new file mode 100644 index 0000000..9d86ea2 --- /dev/null +++ b/src/st/st-bin.c @@ -0,0 +1,404 @@ +/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ +/* + * st-bin.c: Basic container actor + * + * Copyright 2009 Intel Corporation. + * Copyright 2009, 2010 Red Hat, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU Lesser General Public License, + * version 2.1, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT ANY + * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for + * more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this program. If not, see . + */ + +/** + * SECTION:st-bin + * @short_description: a simple container with one actor + * + * #StBin is a simple container capable of having only one + * #ClutterActor as a child. + * + * #StBin inherits from #StWidget, so it is fully themable. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include + +#include "st-bin.h" +#include "st-enum-types.h" +#include "st-private.h" + +typedef struct _StBinPrivate StBinPrivate; +struct _StBinPrivate +{ + ClutterActor *child; +}; + +enum +{ + PROP_0, + + PROP_CHILD, + + N_PROPS +}; + +static GParamSpec *props[N_PROPS] = { NULL, }; + +static void clutter_container_iface_init (ClutterContainerIface *iface); + +G_DEFINE_TYPE_WITH_CODE (StBin, st_bin, ST_TYPE_WIDGET, + G_ADD_PRIVATE (StBin) + G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_CONTAINER, + clutter_container_iface_init)); + +static void +st_bin_add (ClutterContainer *container, + ClutterActor *actor) +{ + st_bin_set_child (ST_BIN (container), actor); +} + +static void +st_bin_remove (ClutterContainer *container, + ClutterActor *actor) +{ + StBin *bin = ST_BIN (container); + StBinPrivate *priv = st_bin_get_instance_private (bin); + + if (priv->child == actor) + st_bin_set_child (bin, NULL); +} + +static void +clutter_container_iface_init (ClutterContainerIface *iface) +{ + iface->add = st_bin_add; + iface->remove = st_bin_remove; +} + +static double +get_align_factor (ClutterActorAlign align) +{ + switch (align) + { + case CLUTTER_ACTOR_ALIGN_CENTER: + return 0.5; + + case CLUTTER_ACTOR_ALIGN_START: + return 0.0; + + case CLUTTER_ACTOR_ALIGN_END: + return 1.0; + + case CLUTTER_ACTOR_ALIGN_FILL: + break; + } + + return 0.0; +} + +static void +st_bin_allocate (ClutterActor *self, + const ClutterActorBox *box) +{ + StBinPrivate *priv = st_bin_get_instance_private (ST_BIN (self)); + + clutter_actor_set_allocation (self, box); + + if (priv->child && clutter_actor_is_visible (priv->child)) + { + StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (self)); + ClutterActorAlign x_align = clutter_actor_get_x_align (priv->child); + ClutterActorAlign y_align = clutter_actor_get_y_align (priv->child); + ClutterActorBox childbox; + + st_theme_node_get_content_box (theme_node, box, &childbox); + clutter_actor_allocate_align_fill (priv->child, &childbox, + get_align_factor (x_align), + get_align_factor (y_align), + x_align == CLUTTER_ACTOR_ALIGN_FILL, + y_align == CLUTTER_ACTOR_ALIGN_FILL); + } +} + +static void +st_bin_get_preferred_width (ClutterActor *self, + gfloat for_height, + gfloat *min_width_p, + gfloat *natural_width_p) +{ + StBinPrivate *priv = st_bin_get_instance_private (ST_BIN (self)); + StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (self)); + + st_theme_node_adjust_for_height (theme_node, &for_height); + + if (priv->child == NULL || !clutter_actor_is_visible (priv->child)) + { + if (min_width_p) + *min_width_p = 0; + + if (natural_width_p) + *natural_width_p = 0; + } + else + { + ClutterActorAlign y_align = clutter_actor_get_y_align (priv->child); + + _st_actor_get_preferred_width (priv->child, for_height, + y_align == CLUTTER_ACTOR_ALIGN_FILL, + min_width_p, + natural_width_p); + } + + st_theme_node_adjust_preferred_width (theme_node, min_width_p, natural_width_p); +} + +static void +st_bin_get_preferred_height (ClutterActor *self, + gfloat for_width, + gfloat *min_height_p, + gfloat *natural_height_p) +{ + StBinPrivate *priv = st_bin_get_instance_private (ST_BIN (self)); + StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (self)); + + st_theme_node_adjust_for_width (theme_node, &for_width); + + if (priv->child == NULL || !clutter_actor_is_visible (priv->child)) + { + if (min_height_p) + *min_height_p = 0; + + if (natural_height_p) + *natural_height_p = 0; + } + else + { + ClutterActorAlign x_align = clutter_actor_get_y_align (priv->child); + + _st_actor_get_preferred_height (priv->child, for_width, + x_align == CLUTTER_ACTOR_ALIGN_FILL, + min_height_p, + natural_height_p); + } + + st_theme_node_adjust_preferred_height (theme_node, min_height_p, natural_height_p); +} + +static void +st_bin_destroy (ClutterActor *actor) +{ + StBinPrivate *priv = st_bin_get_instance_private (ST_BIN (actor)); + + if (priv->child) + clutter_actor_destroy (priv->child); + g_assert (priv->child == NULL); + + CLUTTER_ACTOR_CLASS (st_bin_parent_class)->destroy (actor); +} + +static void +st_bin_popup_menu (StWidget *widget) +{ + StBinPrivate *priv = st_bin_get_instance_private (ST_BIN (widget)); + + if (priv->child && ST_IS_WIDGET (priv->child)) + st_widget_popup_menu (ST_WIDGET (priv->child)); +} + +static gboolean +st_bin_navigate_focus (StWidget *widget, + ClutterActor *from, + StDirectionType direction) +{ + StBinPrivate *priv = st_bin_get_instance_private (ST_BIN (widget)); + ClutterActor *bin_actor = CLUTTER_ACTOR (widget); + + if (st_widget_get_can_focus (widget)) + { + if (from && clutter_actor_contains (bin_actor, from)) + return FALSE; + + if (clutter_actor_is_mapped (bin_actor)) + { + clutter_actor_grab_key_focus (bin_actor); + return TRUE; + } + else + { + return FALSE; + } + } + else if (priv->child && ST_IS_WIDGET (priv->child)) + return st_widget_navigate_focus (ST_WIDGET (priv->child), from, direction, FALSE); + else + return FALSE; +} + +static void +st_bin_set_property (GObject *gobject, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + StBin *bin = ST_BIN (gobject); + + switch (prop_id) + { + case PROP_CHILD: + st_bin_set_child (bin, g_value_get_object (value)); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec); + } +} + +static void +st_bin_get_property (GObject *gobject, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + StBinPrivate *priv = st_bin_get_instance_private (ST_BIN (gobject)); + + switch (prop_id) + { + case PROP_CHILD: + g_value_set_object (value, priv->child); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec); + } +} + +static void +st_bin_class_init (StBinClass *klass) +{ + GObjectClass *gobject_class = G_OBJECT_CLASS (klass); + ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass); + StWidgetClass *widget_class = ST_WIDGET_CLASS (klass); + + gobject_class->set_property = st_bin_set_property; + gobject_class->get_property = st_bin_get_property; + + actor_class->get_preferred_width = st_bin_get_preferred_width; + actor_class->get_preferred_height = st_bin_get_preferred_height; + actor_class->allocate = st_bin_allocate; + actor_class->destroy = st_bin_destroy; + + widget_class->popup_menu = st_bin_popup_menu; + widget_class->navigate_focus = st_bin_navigate_focus; + + /** + * StBin:child: + * + * The child #ClutterActor of the #StBin container. + */ + props[PROP_CHILD] = + g_param_spec_object ("child", + "Child", + "The child of the Bin", + CLUTTER_TYPE_ACTOR, + ST_PARAM_READWRITE | G_PARAM_EXPLICIT_NOTIFY); + + g_object_class_install_properties (gobject_class, N_PROPS, props); +} + +static void +st_bin_init (StBin *bin) +{ +} + +/** + * st_bin_new: + * + * Creates a new #StBin, a simple container for one child. + * + * Returns: the newly created #StBin actor + */ +StWidget * +st_bin_new (void) +{ + return g_object_new (ST_TYPE_BIN, NULL); +} + +/** + * st_bin_set_child: + * @bin: a #StBin + * @child: (nullable): a #ClutterActor, or %NULL + * + * Sets @child as the child of @bin. + * + * If @bin already has a child, the previous child is removed. + */ +void +st_bin_set_child (StBin *bin, + ClutterActor *child) +{ + StBinPrivate *priv; + + g_return_if_fail (ST_IS_BIN (bin)); + g_return_if_fail (child == NULL || CLUTTER_IS_ACTOR (child)); + + priv = st_bin_get_instance_private (bin); + + if (priv->child == child) + return; + + if (child) + { + ClutterActor *parent = clutter_actor_get_parent (child); + + if (parent) + { + g_warning ("%s: The provided 'child' actor %p already has a " + "(different) parent %p and can't be made a child of %p.", + G_STRFUNC, child, parent, bin); + return; + } + } + + if (priv->child) + clutter_actor_remove_child (CLUTTER_ACTOR (bin), priv->child); + + priv->child = NULL; + + if (child) + { + priv->child = child; + clutter_actor_add_child (CLUTTER_ACTOR (bin), child); + } + + clutter_actor_queue_relayout (CLUTTER_ACTOR (bin)); + + g_object_notify_by_pspec (G_OBJECT (bin), props[PROP_CHILD]); +} + +/** + * st_bin_get_child: + * @bin: a #StBin + * + * Gets the #ClutterActor child for @bin. + * + * Returns: (transfer none) (nullable): a #ClutterActor, or %NULL + */ +ClutterActor * +st_bin_get_child (StBin *bin) +{ + g_return_val_if_fail (ST_IS_BIN (bin), NULL); + + return ((StBinPrivate *)st_bin_get_instance_private (bin))->child; +} -- cgit v1.2.3