/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ /* * st-widget.c: Base class for St actors * * Copyright 2007 OpenedHand * Copyright 2008, 2009 Intel Corporation. * * 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, write to the Free Software Foundation, * Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. * Boston, MA 02111-1307, USA. * * Written by: Emmanuele Bassi * Thomas Wood * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include "st-widget.h" #include "st-marshal.h" #include "st-private.h" #include "st-texture-cache.h" #include "st-theme-context.h" #include "st-tooltip.h" #include "st-theme-node-transition.h" /* * Forward declaration for sake of StWidgetChild */ struct _StWidgetPrivate { StTheme *theme; StThemeNode *theme_node; gchar *pseudo_class; gchar *style_class; gchar *inline_style; StThemeNodeTransition *transition_animation; gboolean is_stylable : 1; gboolean has_tooltip : 1; gboolean is_style_dirty : 1; gboolean draw_bg_color : 1; gboolean draw_border_internal : 1; gboolean track_hover : 1; gboolean hover : 1; StTooltip *tooltip; StTextDirection direction; }; /** * SECTION:st-widget * @short_description: Base class for stylable actors * * #StWidget is a simple abstract class on top of #ClutterActor. It * provides basic themeing properties. * * Actors in the St library should subclass #StWidget if they plan * to obey to a certain #StStyle. */ enum { PROP_0, PROP_THEME, PROP_PSEUDO_CLASS, PROP_STYLE_CLASS, PROP_STYLE, PROP_STYLABLE, PROP_HAS_TOOLTIP, PROP_TOOLTIP_TEXT, PROP_TRACK_HOVER, PROP_HOVER }; enum { STYLE_CHANGED, LAST_SIGNAL }; static guint signals[LAST_SIGNAL] = { 0, }; G_DEFINE_ABSTRACT_TYPE (StWidget, st_widget, CLUTTER_TYPE_ACTOR); #define ST_WIDGET_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), ST_TYPE_WIDGET, StWidgetPrivate)) static void st_widget_recompute_style (StWidget *widget, StThemeNode *old_theme_node); static void st_widget_set_property (GObject *gobject, guint prop_id, const GValue *value, GParamSpec *pspec) { StWidget *actor = ST_WIDGET (gobject); switch (prop_id) { case PROP_THEME: st_widget_set_theme (actor, g_value_get_object (value)); break; case PROP_PSEUDO_CLASS: st_widget_set_style_pseudo_class (actor, g_value_get_string (value)); break; case PROP_STYLE_CLASS: st_widget_set_style_class_name (actor, g_value_get_string (value)); break; case PROP_STYLE: st_widget_set_style (actor, g_value_get_string (value)); break; case PROP_STYLABLE: if (actor->priv->is_stylable != g_value_get_boolean (value)) { actor->priv->is_stylable = g_value_get_boolean (value); clutter_actor_queue_relayout ((ClutterActor *) gobject); } break; case PROP_HAS_TOOLTIP: st_widget_set_has_tooltip (actor, g_value_get_boolean (value)); break; case PROP_TOOLTIP_TEXT: st_widget_set_tooltip_text (actor, g_value_get_string (value)); break; case PROP_TRACK_HOVER: st_widget_set_track_hover (actor, g_value_get_boolean (value)); break; case PROP_HOVER: st_widget_set_hover (actor, g_value_get_boolean (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec); break; } } static void st_widget_get_property (GObject *gobject, guint prop_id, GValue *value, GParamSpec *pspec) { StWidget *actor = ST_WIDGET (gobject); StWidgetPrivate *priv = actor->priv; switch (prop_id) { case PROP_THEME: g_value_set_object (value, priv->theme); break; case PROP_PSEUDO_CLASS: g_value_set_string (value, priv->pseudo_class); break; case PROP_STYLE_CLASS: g_value_set_string (value, priv->style_class); break; case PROP_STYLE: g_value_set_string (value, priv->inline_style); break; case PROP_STYLABLE: g_value_set_boolean (value, priv->is_stylable); break; case PROP_HAS_TOOLTIP: g_value_set_boolean (value, priv->has_tooltip); break; case PROP_TOOLTIP_TEXT: g_value_set_string (value, st_widget_get_tooltip_text (actor)); break; case PROP_TRACK_HOVER: g_value_set_boolean (value, priv->track_hover); break; case PROP_HOVER: g_value_set_boolean (value, priv->hover); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec); break; } } static void st_widget_remove_transition (StWidget *widget) { if (widget->priv->transition_animation) { g_object_run_dispose (G_OBJECT (widget->priv->transition_animation)); g_object_unref (widget->priv->transition_animation); widget->priv->transition_animation = NULL; } } static void st_widget_dispose (GObject *gobject) { StWidget *actor = ST_WIDGET (gobject); StWidgetPrivate *priv = ST_WIDGET (actor)->priv; if (priv->theme) { g_object_unref (priv->theme); priv->theme = NULL; } if (priv->theme_node) { g_object_run_dispose (G_OBJECT (priv->theme_node)); g_object_unref (priv->theme_node); priv->theme_node = NULL; } st_widget_remove_transition (actor); if (priv->tooltip) { ClutterContainer *parent; ClutterActor *tooltip = CLUTTER_ACTOR (priv->tooltip); /* this is just a little bit awkward because the tooltip is parented * on the stage, but we still want to "own" it */ parent = CLUTTER_CONTAINER (clutter_actor_get_parent (tooltip)); if (parent) clutter_container_remove_actor (parent, tooltip); priv->tooltip = NULL; } G_OBJECT_CLASS (st_widget_parent_class)->dispose (gobject); } static void st_widget_finalize (GObject *gobject) { StWidgetPrivate *priv = ST_WIDGET (gobject)->priv; g_free (priv->style_class); g_free (priv->pseudo_class); G_OBJECT_CLASS (st_widget_parent_class)->finalize (gobject); } static void st_widget_get_preferred_width (ClutterActor *self, gfloat for_height, gfloat *min_width_p, gfloat *natural_width_p) { StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (self)); /* Most subclasses will override this and not chain down. However, * if they do not, then we need to override ClutterActor's default * behavior (request 0x0) to take CSS-specified minimums into * account (which st_theme_node_adjust_preferred_width() will do.) */ if (min_width_p) *min_width_p = 0; if (natural_width_p) *natural_width_p = 0; st_theme_node_adjust_preferred_width (theme_node, min_width_p, natural_width_p); } static void st_widget_get_preferred_height (ClutterActor *self, gfloat for_width, gfloat *min_height_p, gfloat *natural_height_p) { StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (self)); /* See st_widget_get_preferred_width() */ if (min_height_p) *min_height_p = 0; if (natural_height_p) *natural_height_p = 0; st_theme_node_adjust_preferred_height (theme_node, min_height_p, natural_height_p); } static void st_widget_allocate (ClutterActor *actor, const ClutterActorBox *box, ClutterAllocationFlags flags) { StWidget *self = ST_WIDGET (actor); StWidgetPrivate *priv = self->priv; StThemeNode *theme_node; ClutterActorClass *klass; ClutterGeometry area; ClutterVertex in_v, out_v; theme_node = st_widget_get_theme_node (self); klass = CLUTTER_ACTOR_CLASS (st_widget_parent_class); klass->allocate (actor, box, flags); /* update tooltip position */ if (priv->tooltip) { in_v.x = in_v.y = in_v.z = 0; clutter_actor_apply_transform_to_point (actor, &in_v, &out_v); area.x = out_v.x; area.y = out_v.y; in_v.x = box->x2 - box->x1; in_v.y = box->y2 - box->y1; clutter_actor_apply_transform_to_point (actor, &in_v, &out_v); area.width = out_v.x - area.x; area.height = out_v.y - area.y; st_tooltip_set_tip_area (priv->tooltip, &area); } } static void st_widget_paint (ClutterActor *actor) { StWidget *self = ST_WIDGET (actor); StThemeNode *theme_node; ClutterActorBox allocation; guint8 opacity; theme_node = st_widget_get_theme_node (self); clutter_actor_get_allocation_box (actor, &allocation); opacity = clutter_actor_get_paint_opacity (actor); if (self->priv->transition_animation) st_theme_node_transition_paint (self->priv->transition_animation, &allocation, opacity); else st_theme_node_paint (theme_node, &allocation, opacity); } static void st_widget_parent_set (ClutterActor *widget, ClutterActor *old_parent) { ClutterActorClass *parent_class; ClutterActor *new_parent; parent_class = CLUTTER_ACTOR_CLASS (st_widget_parent_class); if (parent_class->parent_set) parent_class->parent_set (widget, old_parent); new_parent = clutter_actor_get_parent (widget); /* don't send the style changed signal if we no longer have a parent actor */ if (new_parent) st_widget_style_changed (ST_WIDGET (widget)); } static void st_widget_map (ClutterActor *actor) { StWidgetPrivate *priv = ST_WIDGET (actor)->priv; CLUTTER_ACTOR_CLASS (st_widget_parent_class)->map (actor); st_widget_ensure_style ((StWidget*) actor); if (priv->tooltip) clutter_actor_map ((ClutterActor *) priv->tooltip); } static void st_widget_unmap (ClutterActor *actor) { StWidgetPrivate *priv = ST_WIDGET (actor)->priv; CLUTTER_ACTOR_CLASS (st_widget_parent_class)->unmap (actor); if (priv->tooltip) clutter_actor_unmap ((ClutterActor *) priv->tooltip); } static void notify_children_of_style_change (ClutterContainer *container); static void notify_children_of_style_change_foreach (ClutterActor *actor, gpointer user_data) { if (ST_IS_WIDGET (actor)) st_widget_style_changed (ST_WIDGET (actor)); else if (CLUTTER_IS_CONTAINER (actor)) notify_children_of_style_change ((ClutterContainer *)actor); } static void notify_children_of_style_change (ClutterContainer *container) { /* notify our children that their parent stylable has changed */ clutter_container_foreach (container, notify_children_of_style_change_foreach, NULL); } static void st_widget_real_style_changed (StWidget *self) { StWidgetPrivate *priv = ST_WIDGET (self)->priv; /* application has request this widget is not stylable */ if (!priv->is_stylable) return; clutter_actor_queue_redraw ((ClutterActor *) self); if (CLUTTER_IS_CONTAINER (self)) notify_children_of_style_change ((ClutterContainer *)self); } void st_widget_style_changed (StWidget *widget) { StThemeNode *old_theme_node = NULL; widget->priv->is_style_dirty = TRUE; if (widget->priv->theme_node) { old_theme_node = widget->priv->theme_node; widget->priv->theme_node = NULL; } /* update the style only if we are mapped */ if (CLUTTER_ACTOR_IS_MAPPED (CLUTTER_ACTOR (widget))) st_widget_recompute_style (widget, old_theme_node); if (old_theme_node) g_object_unref (old_theme_node); } static void on_theme_context_changed (StThemeContext *context, ClutterStage *stage) { notify_children_of_style_change (CLUTTER_CONTAINER (stage)); } static StThemeNode * get_root_theme_node (ClutterStage *stage) { StThemeContext *context = st_theme_context_get_for_stage (stage); if (!g_object_get_data (G_OBJECT (context), "st-theme-initialized")) { g_object_set_data (G_OBJECT (context), "st-theme-initialized", GUINT_TO_POINTER (1)); g_signal_connect (G_OBJECT (context), "changed", G_CALLBACK (on_theme_context_changed), stage); } return st_theme_context_get_root_node (context); } /** * st_widget_get_theme_node: * @widget: a #StWidget * * Gets the theme node holding style information for the widget. * The theme node is used to access standard and custom CSS * properties of the widget. * * Return value: (transfer none): the theme node for the widget. * This is owned by the widget. When attributes of the widget * or the environment that affect the styling change (for example * the style_class property of the widget), it will be recreated, * and the ::style-changed signal will be emitted on the widget. */ StThemeNode * st_widget_get_theme_node (StWidget *widget) { StWidgetPrivate *priv = widget->priv; if (priv->theme_node == NULL) { StThemeNode *parent_node = NULL; ClutterStage *stage = NULL; ClutterActor *parent; parent = clutter_actor_get_parent (CLUTTER_ACTOR (widget)); while (parent != NULL) { if (parent_node == NULL && ST_IS_WIDGET (parent)) parent_node = st_widget_get_theme_node (ST_WIDGET (parent)); else if (CLUTTER_IS_STAGE (parent)) stage = CLUTTER_STAGE (parent); parent = clutter_actor_get_parent (parent); } if (stage == NULL) { g_error ("st_widget_get_theme_node called on a widget not in a stage"); } if (parent_node == NULL) parent_node = get_root_theme_node (CLUTTER_STAGE (stage)); priv->theme_node = st_theme_node_new (st_theme_context_get_for_stage (stage), parent_node, priv->theme, G_OBJECT_TYPE (widget), clutter_actor_get_name (CLUTTER_ACTOR (widget)), priv->style_class, priv->pseudo_class, priv->inline_style); } return priv->theme_node; } static gboolean st_widget_enter (ClutterActor *actor, ClutterCrossingEvent *event) { StWidgetPrivate *priv = ST_WIDGET (actor)->priv; if (priv->track_hover) { if (_st_actor_contains (actor, event->source)) st_widget_set_hover (ST_WIDGET (actor), TRUE); else { /* The widget has a grab and is being told about an * enter-event outside its hierarchy. Hopefully we already * got a leave-event, but if not, handle it now. */ st_widget_set_hover (ST_WIDGET (actor), FALSE); } } if (CLUTTER_ACTOR_CLASS (st_widget_parent_class)->enter_event) return CLUTTER_ACTOR_CLASS (st_widget_parent_class)->enter_event (actor, event); else return FALSE; } static gboolean st_widget_leave (ClutterActor *actor, ClutterCrossingEvent *event) { StWidgetPrivate *priv = ST_WIDGET (actor)->priv; if (priv->track_hover) { if (!_st_actor_contains (actor, event->related)) st_widget_set_hover (ST_WIDGET (actor), FALSE); } if (CLUTTER_ACTOR_CLASS (st_widget_parent_class)->leave_event) return CLUTTER_ACTOR_CLASS (st_widget_parent_class)->leave_event (actor, event); else return FALSE; } static void st_widget_hide (ClutterActor *actor) { StWidget *widget = (StWidget *) actor; /* hide the tooltip, if there is one */ if (widget->priv->tooltip) st_tooltip_hide (ST_TOOLTIP (widget->priv->tooltip)); CLUTTER_ACTOR_CLASS (st_widget_parent_class)->hide (actor); } static void st_widget_class_init (StWidgetClass *klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass); GParamSpec *pspec; g_type_class_add_private (klass, sizeof (StWidgetPrivate)); gobject_class->set_property = st_widget_set_property; gobject_class->get_property = st_widget_get_property; gobject_class->dispose = st_widget_dispose; gobject_class->finalize = st_widget_finalize; actor_class->get_preferred_width = st_widget_get_preferred_width; actor_class->get_preferred_height = st_widget_get_preferred_height; actor_class->allocate = st_widget_allocate; actor_class->paint = st_widget_paint; actor_class->parent_set = st_widget_parent_set; actor_class->map = st_widget_map; actor_class->unmap = st_widget_unmap; actor_class->enter_event = st_widget_enter; actor_class->leave_event = st_widget_leave; actor_class->hide = st_widget_hide; klass->style_changed = st_widget_real_style_changed; /** * StWidget:pseudo-class: * * The pseudo-class of the actor. Typical values include "hover", "active", * "focus". */ g_object_class_install_property (gobject_class, PROP_PSEUDO_CLASS, g_param_spec_string ("pseudo-class", "Pseudo Class", "Pseudo class for styling", "", ST_PARAM_READWRITE)); /** * StWidget:style-class: * * The style-class of the actor for use in styling. */ g_object_class_install_property (gobject_class, PROP_STYLE_CLASS, g_param_spec_string ("style-class", "Style Class", "Style class for styling", "", ST_PARAM_READWRITE)); /** * StWidget:style: * * Inline style information for the actor as a ';'-separated list of * CSS properties. */ g_object_class_install_property (gobject_class, PROP_STYLE, g_param_spec_string ("style", "Style", "Inline style string", "", ST_PARAM_READWRITE)); /** * StWidget:theme * * A theme set on this actor overriding the global theming for this actor * and its descendants */ g_object_class_install_property (gobject_class, PROP_THEME, g_param_spec_object ("theme", "Theme", "Theme override", ST_TYPE_THEME, ST_PARAM_READWRITE)); /** * StWidget:stylable: * * Enable or disable styling of the widget */ pspec = g_param_spec_boolean ("stylable", "Stylable", "Whether the table should be styled", TRUE, ST_PARAM_READWRITE); g_object_class_install_property (gobject_class, PROP_STYLABLE, pspec); /** * StWidget:has-tooltip: * * Determines whether the widget has a tooltip. If set to %TRUE, causes the * widget to monitor hover state (i.e. sets #ClutterActor:reactive and * #StWidget:track-hover). */ pspec = g_param_spec_boolean ("has-tooltip", "Has Tooltip", "Determines whether the widget has a tooltip", FALSE, ST_PARAM_READWRITE); g_object_class_install_property (gobject_class, PROP_HAS_TOOLTIP, pspec); /** * StWidget:tooltip-text: * * text displayed on the tooltip */ pspec = g_param_spec_string ("tooltip-text", "Tooltip Text", "Text displayed on the tooltip", "", ST_PARAM_READWRITE); g_object_class_install_property (gobject_class, PROP_TOOLTIP_TEXT, pspec); /** * StWidget:track-hover: * * Determines whether the widget tracks pointer hover state. If * %TRUE (and the widget is visible and reactive), the * #StWidget:hover property and "hover" style pseudo class will be * adjusted automatically as the pointer moves in and out of the * widget. */ pspec = g_param_spec_boolean ("track-hover", "Track hover", "Determines whether the widget tracks hover state", FALSE, ST_PARAM_READWRITE); g_object_class_install_property (gobject_class, PROP_TRACK_HOVER, pspec); /** * StWidget:hover: * * Whether or not the pointer is currently hovering over the widget. This is * only tracked automatically if #StWidget:track-hover is %TRUE, but you can * adjust it manually in any case. */ pspec = g_param_spec_boolean ("hover", "Hover", "Whether the pointer is hovering over the widget", FALSE, ST_PARAM_READWRITE); g_object_class_install_property (gobject_class, PROP_HOVER, pspec); /** * StWidget::style-changed: * * Emitted when the style information that the widget derives from the * theme changes */ signals[STYLE_CHANGED] = g_signal_new ("style-changed", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (StWidgetClass, style_changed), NULL, NULL, _st_marshal_VOID__VOID, G_TYPE_NONE, 0); } /** * st_widget_set_theme: * @actor: a #StWidget * @theme: a new style class string * * Overrides the theme that would be inherited from the actor's parent * or the stage with an entirely new theme (set of stylesheets). */ void st_widget_set_theme (StWidget *actor, StTheme *theme) { StWidgetPrivate *priv = actor->priv; g_return_if_fail (ST_IS_WIDGET (actor)); priv = actor->priv; if (theme !=priv->theme) { if (priv->theme) g_object_unref (priv->theme); priv->theme = g_object_ref (priv->theme); st_widget_style_changed (actor); g_object_notify (G_OBJECT (actor), "theme"); } } /** * st_widget_get_theme: * @actor: a #StWidget * * Gets the overriding theme set on the actor. See st_widget_set_theme() * * Return value: (transfer none): the overriding theme, or %NULL */ StTheme * st_widget_get_theme (StWidget *actor) { g_return_val_if_fail (ST_IS_WIDGET (actor), NULL); return actor->priv->theme; } static const gchar * find_class_name (const gchar *class_list, const gchar *class_name) { gint len = strlen (class_name); const gchar *match; if (!class_list) return NULL; for (match = strstr (class_list, class_name); match; match = strstr (match + 1, class_name)) { if ((match == class_list || g_ascii_isspace (match[-1])) && (match[len] == '\0' || g_ascii_isspace (match[len]))) return match; } return NULL; } static gboolean set_class_list (gchar **class_list, const gchar *new_class_list) { if (g_strcmp0 (*class_list, new_class_list) != 0) { g_free (*class_list); *class_list = g_strdup (new_class_list); return TRUE; } else return FALSE; } static gboolean add_class_name (gchar **class_list, const gchar *class_name) { gchar *new_class_list; if (*class_list) { if (find_class_name (*class_list, class_name)) return FALSE; new_class_list = g_strdup_printf ("%s %s", *class_list, class_name); g_free (*class_list); *class_list = new_class_list; } else *class_list = g_strdup (class_name); return TRUE; } static gboolean remove_class_name (gchar **class_list, const gchar *class_name) { const gchar *match, *end; gchar *new_class_list; if (!*class_list) return FALSE; if (strcmp (*class_list, class_name) == 0) { g_free (*class_list); *class_list = NULL; return TRUE; } match = find_class_name (*class_list, class_name); if (!match) return FALSE; end = match + strlen (class_name); /* Adjust either match or end to include a space as well. * (One or the other must be possible at this point.) */ if (match != *class_list) match--; else end++; new_class_list = g_strdup_printf ("%.*s%s", (int)(match - *class_list), *class_list, end); g_free (*class_list); *class_list = new_class_list; return TRUE; } /** * st_widget_set_style_class_name: * @actor: a #StWidget * @style_class_list: (allow-none): a new style class list string * * Set the style class name list. @style_class_list can either be * %NULL, for no classes, or a space-separated list of style class * names. See also st_widget_add_style_class_name() and * st_widget_remove_style_class_name(). */ void st_widget_set_style_class_name (StWidget *actor, const gchar *style_class_list) { g_return_if_fail (ST_IS_WIDGET (actor)); if (set_class_list (&actor->priv->style_class, style_class_list)) { st_widget_style_changed (actor); g_object_notify (G_OBJECT (actor), "style-class"); } } /** * st_widget_add_style_class_name: * @actor: a #StWidget * @style_class: a style class name string * * Adds @style_class to @actor's style class name list, if it is not * already present. */ void st_widget_add_style_class_name (StWidget *actor, const gchar *style_class) { g_return_if_fail (ST_IS_WIDGET (actor)); g_return_if_fail (style_class != NULL); if (add_class_name (&actor->priv->style_class, style_class)) { st_widget_style_changed (actor); g_object_notify (G_OBJECT (actor), "style-class"); } } /** * st_widget_remove_style_class_name: * @actor: a #StWidget * @style_class: a style class name string * * Removes @style_class from @actor's style class name, if it is * present. */ void st_widget_remove_style_class_name (StWidget *actor, const gchar *style_class) { g_return_if_fail (ST_IS_WIDGET (actor)); g_return_if_fail (style_class != NULL); if (remove_class_name (&actor->priv->style_class, style_class)) { st_widget_style_changed (actor); g_object_notify (G_OBJECT (actor), "style-class"); } } /** * st_widget_get_style_class_name: * @actor: a #StWidget * * Get the current style class name * * Returns: the class name string. The string is owned by the #StWidget and * should not be modified or freed. */ const gchar* st_widget_get_style_class_name (StWidget *actor) { g_return_val_if_fail (ST_IS_WIDGET (actor), NULL); return actor->priv->style_class; } /** * st_widget_has_style_class_name: * @actor: a #StWidget * @style_class: a style class string * * Tests if @actor's style class list includes @style_class. * * Returns: whether or not @actor's style class list includes * @style_class. */ gboolean st_widget_has_style_class_name (StWidget *actor, const gchar *style_class) { g_return_val_if_fail (ST_IS_WIDGET (actor), FALSE); return find_class_name (actor->priv->style_class, style_class) != NULL; } /** * st_widget_get_style_pseudo_class: * @actor: a #StWidget * * Get the current style pseudo class list. * * Note that an actor can have multiple pseudo classes; if you just * want to test for the presence of a specific pseudo class, use * st_widget_has_style_pseudo_class(). * * Returns: the pseudo class list string. The string is owned by the * #StWidget and should not be modified or freed. */ const gchar* st_widget_get_style_pseudo_class (StWidget *actor) { g_return_val_if_fail (ST_IS_WIDGET (actor), NULL); return actor->priv->pseudo_class; } /** * st_widget_has_style_pseudo_class: * @actor: a #StWidget * @pseudo_class: a pseudo class string * * Tests if @actor's pseudo class list includes @pseudo_class. * * Returns: whether or not @actor's pseudo class list includes * @pseudo_class. */ gboolean st_widget_has_style_pseudo_class (StWidget *actor, const gchar *pseudo_class) { g_return_val_if_fail (ST_IS_WIDGET (actor), FALSE); return find_class_name (actor->priv->pseudo_class, pseudo_class) != NULL; } /** * st_widget_set_style_pseudo_class: * @actor: a #StWidget * @pseudo_class_list: (allow-none): a new pseudo class list string * * Set the style pseudo class list. @pseudo_class_list can either be * %NULL, for no classes, or a space-separated list of pseudo class * names. See also st_widget_add_style_pseudo_class() and * st_widget_remove_style_pseudo_class(). */ void st_widget_set_style_pseudo_class (StWidget *actor, const gchar *pseudo_class_list) { g_return_if_fail (ST_IS_WIDGET (actor)); if (set_class_list (&actor->priv->pseudo_class, pseudo_class_list)) { st_widget_style_changed (actor); g_object_notify (G_OBJECT (actor), "pseudo-class"); } } /** * st_widget_add_style_pseudo_class: * @actor: a #StWidget * @pseudo_class: a pseudo class string * * Adds @pseudo_class to @actor's pseudo class list, if it is not * already present. */ void st_widget_add_style_pseudo_class (StWidget *actor, const gchar *pseudo_class) { g_return_if_fail (ST_IS_WIDGET (actor)); g_return_if_fail (pseudo_class != NULL); if (add_class_name (&actor->priv->pseudo_class, pseudo_class)) { st_widget_style_changed (actor); g_object_notify (G_OBJECT (actor), "pseudo-class"); } } /** * st_widget_remove_style_pseudo_class: * @actor: a #StWidget * @pseudo_class: a pseudo class string * * Removes @pseudo_class from @actor's pseudo class, if it is present. */ void st_widget_remove_style_pseudo_class (StWidget *actor, const gchar *pseudo_class) { g_return_if_fail (ST_IS_WIDGET (actor)); g_return_if_fail (pseudo_class != NULL); if (remove_class_name (&actor->priv->pseudo_class, pseudo_class)) { st_widget_style_changed (actor); g_object_notify (G_OBJECT (actor), "pseudo-class"); } } /** * st_widget_set_style: * @actor: a #StWidget * @style_class: (allow-none): a inline style string, or %NULL * * Set the inline style string for this widget. The inline style string is an * optional ';'-separated list of CSS properties that override the style as * determined from the stylesheets of the current theme. */ void st_widget_set_style (StWidget *actor, const gchar *style) { StWidgetPrivate *priv = actor->priv; g_return_if_fail (ST_IS_WIDGET (actor)); priv = actor->priv; if (g_strcmp0 (style, priv->inline_style)) { g_free (priv->inline_style); priv->inline_style = g_strdup (style); st_widget_style_changed (actor); g_object_notify (G_OBJECT (actor), "style"); } } /** * st_widget_get_style: * @actor: a #StWidget * * Get the current inline style string. See st_widget_set_style(). * * Returns: The inline style string, or %NULL. The string is owned by the * #StWidget and should not be modified or freed. */ const gchar* st_widget_get_style (StWidget *actor) { g_return_val_if_fail (ST_IS_WIDGET (actor), NULL); return actor->priv->inline_style; } static void st_widget_name_notify (StWidget *widget, GParamSpec *pspec, gpointer data) { st_widget_style_changed (widget); } static void st_widget_init (StWidget *actor) { StWidgetPrivate *priv; actor->priv = priv = ST_WIDGET_GET_PRIVATE (actor); priv->is_stylable = TRUE; priv->transition_animation = NULL; /* connect style changed */ g_signal_connect (actor, "notify::name", G_CALLBACK (st_widget_name_notify), NULL); } static void on_transition_completed (StThemeNodeTransition *transition, StWidget *widget) { st_widget_remove_transition (widget); } static void st_widget_recompute_style (StWidget *widget, StThemeNode *old_theme_node) { StThemeNode *new_theme_node = st_widget_get_theme_node (widget); int transition_duration; if (!old_theme_node || !st_theme_node_geometry_equal (old_theme_node, new_theme_node)) clutter_actor_queue_relayout ((ClutterActor *) widget); transition_duration = st_theme_node_get_transition_duration (new_theme_node); if (transition_duration > 0) { if (widget->priv->transition_animation != NULL) { st_theme_node_transition_update (widget->priv->transition_animation, new_theme_node); } else if (old_theme_node) { widget->priv->transition_animation = st_theme_node_transition_new (old_theme_node, new_theme_node, transition_duration); g_signal_connect (widget->priv->transition_animation, "completed", G_CALLBACK (on_transition_completed), widget); g_signal_connect_swapped (widget->priv->transition_animation, "new-frame", G_CALLBACK (clutter_actor_queue_redraw), widget); } } else if (widget->priv->transition_animation) { st_widget_remove_transition (widget); } g_signal_emit (widget, signals[STYLE_CHANGED], 0); widget->priv->is_style_dirty = FALSE; } /** * st_widget_ensure_style: * @widget: A #StWidget * * Ensures that @widget has read its style information. * */ void st_widget_ensure_style (StWidget *widget) { g_return_if_fail (ST_IS_WIDGET (widget)); if (widget->priv->is_style_dirty) st_widget_recompute_style (widget, NULL); } static StTextDirection default_direction = ST_TEXT_DIRECTION_LTR; StTextDirection st_widget_get_default_direction (void) { return default_direction; } void st_widget_set_default_direction (StTextDirection dir) { g_return_if_fail (dir != ST_TEXT_DIRECTION_NONE); default_direction = dir; } StTextDirection st_widget_get_direction (StWidget *self) { g_return_val_if_fail (ST_IS_WIDGET (self), ST_TEXT_DIRECTION_LTR); if (self->priv->direction != ST_TEXT_DIRECTION_NONE) return self->priv->direction; else return default_direction; } void st_widget_set_direction (StWidget *self, StTextDirection dir) { g_return_if_fail (ST_IS_WIDGET (self)); self->priv->direction = dir; } /** * st_widget_set_has_tooltip: * @widget: A #StWidget * @has_tooltip: %TRUE if the widget should display a tooltip * * Enables tooltip support on the #StWidget. * * Note that setting has-tooltip to %TRUE will cause * #ClutterActor:reactive and #StWidget:track-hover to be set %TRUE as * well, but you must clear these flags yourself (if appropriate) when * setting it %FALSE. */ void st_widget_set_has_tooltip (StWidget *widget, gboolean has_tooltip) { StWidgetPrivate *priv; g_return_if_fail (ST_IS_WIDGET (widget)); priv = widget->priv; priv->has_tooltip = has_tooltip; if (has_tooltip) { clutter_actor_set_reactive ((ClutterActor*) widget, TRUE); st_widget_set_track_hover (widget, TRUE); if (!priv->tooltip) { priv->tooltip = g_object_new (ST_TYPE_TOOLTIP, NULL); clutter_actor_set_parent ((ClutterActor *) priv->tooltip, (ClutterActor *) widget); } } else { if (priv->tooltip) { clutter_actor_unparent (CLUTTER_ACTOR (priv->tooltip)); priv->tooltip = NULL; } } } /** * st_widget_get_has_tooltip: * @widget: A #StWidget * * Returns the current value of the has-tooltip property. See * st_tooltip_set_has_tooltip() for more information. * * Returns: current value of has-tooltip on @widget */ gboolean st_widget_get_has_tooltip (StWidget *widget) { g_return_val_if_fail (ST_IS_WIDGET (widget), FALSE); return widget->priv->has_tooltip; } /** * st_widget_set_tooltip_text: * @widget: A #StWidget * @text: text to set as the tooltip * * Set the tooltip text of the widget. This will set StWidget::has-tooltip to * %TRUE. A value of %NULL will unset the tooltip and set has-tooltip to %FALSE. * */ void st_widget_set_tooltip_text (StWidget *widget, const gchar *text) { StWidgetPrivate *priv; g_return_if_fail (ST_IS_WIDGET (widget)); priv = widget->priv; if (text == NULL) st_widget_set_has_tooltip (widget, FALSE); else st_widget_set_has_tooltip (widget, TRUE); st_tooltip_set_label (priv->tooltip, text); } /** * st_widget_get_tooltip_text: * @widget: A #StWidget * * Get the current tooltip string * * Returns: The current tooltip string, owned by the #StWidget */ const gchar* st_widget_get_tooltip_text (StWidget *widget) { StWidgetPrivate *priv; g_return_val_if_fail (ST_IS_WIDGET (widget), NULL); priv = widget->priv; if (!priv->has_tooltip) return NULL; return st_tooltip_get_label (widget->priv->tooltip); } /** * st_widget_show_tooltip: * @widget: A #StWidget * * Show the tooltip for @widget * */ void st_widget_show_tooltip (StWidget *widget) { gfloat x, y, width, height; ClutterGeometry area; g_return_if_fail (ST_IS_WIDGET (widget)); /* XXX not necceary, but first allocate transform is wrong */ clutter_actor_get_transformed_position ((ClutterActor*) widget, &x, &y); clutter_actor_get_size ((ClutterActor*) widget, &width, &height); area.x = x; area.y = y; area.width = width; area.height = height; if (widget->priv->tooltip) { st_tooltip_set_tip_area (widget->priv->tooltip, &area); st_tooltip_show (widget->priv->tooltip); } } /** * st_widget_hide_tooltip: * @widget: A #StWidget * * Hide the tooltip for @widget * */ void st_widget_hide_tooltip (StWidget *widget) { g_return_if_fail (ST_IS_WIDGET (widget)); if (widget->priv->tooltip) st_tooltip_hide (widget->priv->tooltip); } /** * st_widget_set_track_hover: * @widget: A #StWidget * @track_hover: %TRUE if the widget should track the pointer hover state * * Enables hover tracking on the #StWidget. * * If hover tracking is enabled, and the widget is visible and * reactive, then @widget's #StWidget:hover property will be updated * automatically to reflect whether the pointer is in @widget (or one * of its children), and @widget's #StWidget:pseudo-class will have * the "hover" class added and removed from it accordingly. * * Note that currently it is not possible to correctly track the hover * state when another actor has a pointer grab. You can use * st_widget_sync_hover() to update the property manually in this * case. */ void st_widget_set_track_hover (StWidget *widget, gboolean track_hover) { StWidgetPrivate *priv; g_return_if_fail (ST_IS_WIDGET (widget)); priv = widget->priv; if (priv->track_hover != track_hover) { priv->track_hover = track_hover; g_object_notify (G_OBJECT (widget), "track-hover"); if (priv->track_hover) st_widget_sync_hover (widget); } } /** * st_widget_get_track_hover: * @widget: A #StWidget * * Returns the current value of the track-hover property. See * st_tooltip_set_track_hover() for more information. * * Returns: current value of track-hover on @widget */ gboolean st_widget_get_track_hover (StWidget *widget) { g_return_val_if_fail (ST_IS_WIDGET (widget), FALSE); return widget->priv->track_hover; } /** * st_widget_set_hover: * @widget: A #StWidget * @hover: whether the pointer is hovering over the widget * * Sets @widget's hover property and adds or removes "hover" from its * pseudo class accordingly. If #StWidget:has-tooltip is %TRUE, this * will also show or hide the tooltip, as appropriate. * * If you have set #StWidget:track-hover, you should not need to call * this directly. You can call st_widget_sync_hover() if the hover * state might be out of sync due to another actor's pointer grab. */ void st_widget_set_hover (StWidget *widget, gboolean hover) { StWidgetPrivate *priv; g_return_if_fail (ST_IS_WIDGET (widget)); priv = widget->priv; if (priv->hover != hover) { priv->hover = hover; if (priv->hover) { st_widget_add_style_pseudo_class (widget, "hover"); if (priv->has_tooltip) st_widget_show_tooltip (widget); } else { st_widget_remove_style_pseudo_class (widget, "hover"); if (priv->has_tooltip) st_widget_hide_tooltip (widget); } g_object_notify (G_OBJECT (widget), "hover"); } } /** * st_widget_sync_hover: * @widget: A #StWidget * * Sets @widget's hover state according to the current pointer * position. This can be used to ensure that it is correct after * (or during) a pointer grab. */ void st_widget_sync_hover (StWidget *widget) { ClutterDeviceManager *device_manager; ClutterInputDevice *pointer; ClutterActor *pointer_actor; device_manager = clutter_device_manager_get_default (); pointer = clutter_device_manager_get_core_device (device_manager, CLUTTER_POINTER_DEVICE); pointer_actor = clutter_input_device_get_pointer_actor (pointer); st_widget_set_hover (widget, _st_actor_contains (CLUTTER_ACTOR (widget), pointer_actor)); } /** * st_widget_get_hover: * @widget: A #StWidget * * If #StWidget:track-hover is set, this returns whether the pointer * is currently over the widget. * * Returns: current value of hover on @widget */ gboolean st_widget_get_hover (StWidget *widget) { g_return_val_if_fail (ST_IS_WIDGET (widget), FALSE); return widget->priv->hover; }