d54f7b13fb
Currently we miss changes to a file referenced in background-image or border-image. Connect to the StTextureCache::texture-file-changed signal to keep up with file changes and update the drawing state if necessary. https://bugzilla.gnome.org/show_bug.cgi?id=679268
2837 lines
82 KiB
C
2837 lines
82 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/*
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* st-widget.c: Base class for St actors
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*
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* Copyright 2007 OpenedHand
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* Copyright 2008, 2009 Intel Corporation.
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* Copyright 2009, 2010 Red Hat, Inc.
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* Copyright 2009 Abderrahim Kitouni
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* Copyright 2009, 2010 Florian Müllner
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* Copyright 2010 Adel Gadllah
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* Copyright 2012 Igalia, S.L.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU Lesser General Public License,
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* version 2.1, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
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* more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include <math.h>
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#include <clutter/clutter.h>
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#include "st-widget.h"
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#include "st-label.h"
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#include "st-private.h"
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#include "st-texture-cache.h"
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#include "st-theme-context.h"
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#include "st-theme-node-transition.h"
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#include "st-widget-accessible.h"
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#include <gtk/gtk.h>
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#include <atk/atk-enum-types.h>
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/*
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* Forward declaration for sake of StWidgetChild
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*/
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struct _StWidgetPrivate
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{
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StTheme *theme;
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StThemeNode *theme_node;
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gchar *pseudo_class;
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gchar *style_class;
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gchar *inline_style;
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StThemeNodeTransition *transition_animation;
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gboolean is_stylable : 1;
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gboolean is_style_dirty : 1;
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gboolean draw_bg_color : 1;
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gboolean draw_border_internal : 1;
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gboolean track_hover : 1;
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gboolean hover : 1;
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gboolean can_focus : 1;
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AtkObject *accessible;
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AtkRole accessible_role;
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AtkStateSet *local_state_set;
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ClutterActor *label_actor;
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gchar *accessible_name;
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/* Even though Clutter has first_child/last_child properties,
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* we need to keep track of the old first/last children so
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* that we can remove the pseudo classes on them. */
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StWidget *prev_last_child;
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StWidget *prev_first_child;
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};
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/**
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* SECTION:st-widget
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* @short_description: Base class for stylable actors
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*
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* #StWidget is a simple abstract class on top of #ClutterActor. It
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* provides basic themeing properties.
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*
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* Actors in the St library should subclass #StWidget if they plan
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* to obey to a certain #StStyle.
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*/
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enum
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{
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PROP_0,
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PROP_THEME,
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PROP_PSEUDO_CLASS,
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PROP_STYLE_CLASS,
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PROP_STYLE,
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PROP_STYLABLE,
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PROP_TRACK_HOVER,
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PROP_HOVER,
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PROP_CAN_FOCUS,
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PROP_LABEL_ACTOR,
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PROP_ACCESSIBLE_ROLE,
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PROP_ACCESSIBLE_NAME
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};
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enum
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{
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STYLE_CHANGED,
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POPUP_MENU,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL] = { 0, };
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gfloat st_slow_down_factor = 1.0;
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G_DEFINE_TYPE (StWidget, st_widget, CLUTTER_TYPE_ACTOR);
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#define ST_WIDGET_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), ST_TYPE_WIDGET, StWidgetPrivate))
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static void st_widget_recompute_style (StWidget *widget,
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StThemeNode *old_theme_node);
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static gboolean st_widget_real_navigate_focus (StWidget *widget,
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ClutterActor *from,
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GtkDirectionType direction);
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static AtkObject * st_widget_get_accessible (ClutterActor *actor);
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static void
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st_widget_set_property (GObject *gobject,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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StWidget *actor = ST_WIDGET (gobject);
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switch (prop_id)
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{
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case PROP_THEME:
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st_widget_set_theme (actor, g_value_get_object (value));
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break;
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case PROP_PSEUDO_CLASS:
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st_widget_set_style_pseudo_class (actor, g_value_get_string (value));
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break;
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case PROP_STYLE_CLASS:
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st_widget_set_style_class_name (actor, g_value_get_string (value));
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break;
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case PROP_STYLE:
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st_widget_set_style (actor, g_value_get_string (value));
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break;
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case PROP_STYLABLE:
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if (actor->priv->is_stylable != g_value_get_boolean (value))
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{
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actor->priv->is_stylable = g_value_get_boolean (value);
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clutter_actor_queue_relayout ((ClutterActor *) gobject);
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}
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break;
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case PROP_TRACK_HOVER:
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st_widget_set_track_hover (actor, g_value_get_boolean (value));
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break;
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case PROP_HOVER:
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st_widget_set_hover (actor, g_value_get_boolean (value));
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break;
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case PROP_CAN_FOCUS:
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st_widget_set_can_focus (actor, g_value_get_boolean (value));
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break;
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case PROP_LABEL_ACTOR:
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st_widget_set_label_actor (actor, g_value_get_object (value));
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break;
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case PROP_ACCESSIBLE_ROLE:
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st_widget_set_accessible_role (actor, g_value_get_enum (value));
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break;
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case PROP_ACCESSIBLE_NAME:
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st_widget_set_accessible_name (actor, g_value_get_string (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
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break;
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}
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}
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static void
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st_widget_get_property (GObject *gobject,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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StWidget *actor = ST_WIDGET (gobject);
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StWidgetPrivate *priv = actor->priv;
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switch (prop_id)
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{
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case PROP_THEME:
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g_value_set_object (value, priv->theme);
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break;
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case PROP_PSEUDO_CLASS:
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g_value_set_string (value, priv->pseudo_class);
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break;
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case PROP_STYLE_CLASS:
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g_value_set_string (value, priv->style_class);
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break;
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case PROP_STYLE:
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g_value_set_string (value, priv->inline_style);
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break;
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case PROP_STYLABLE:
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g_value_set_boolean (value, priv->is_stylable);
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break;
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case PROP_TRACK_HOVER:
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g_value_set_boolean (value, priv->track_hover);
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break;
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case PROP_HOVER:
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g_value_set_boolean (value, priv->hover);
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break;
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case PROP_CAN_FOCUS:
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g_value_set_boolean (value, priv->can_focus);
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break;
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case PROP_LABEL_ACTOR:
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g_value_set_object (value, priv->label_actor);
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break;
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case PROP_ACCESSIBLE_ROLE:
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g_value_set_enum (value, st_widget_get_accessible_role (actor));
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break;
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case PROP_ACCESSIBLE_NAME:
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g_value_set_string (value, priv->accessible_name);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
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break;
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}
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}
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static void
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st_widget_remove_transition (StWidget *widget)
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{
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if (widget->priv->transition_animation)
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{
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g_object_run_dispose (G_OBJECT (widget->priv->transition_animation));
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g_object_unref (widget->priv->transition_animation);
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widget->priv->transition_animation = NULL;
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}
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}
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static void
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st_widget_texture_cache_changed (StTextureCache *cache,
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const char *uri,
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gpointer user_data)
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{
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StWidget *actor = ST_WIDGET (user_data);
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StThemeNode *node = actor->priv->theme_node;
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StBorderImage *border_image;
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char *path;
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gboolean changed;
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if (node == NULL)
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return;
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path = g_filename_from_uri (uri, NULL, NULL);
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changed = g_strcmp0 (st_theme_node_get_background_image (node), path) == 0;
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border_image = st_theme_node_get_border_image (node);
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if (!changed && border_image)
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changed = strcmp (st_border_image_get_filename (border_image), path) == 0;
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g_free (path);
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if (!changed)
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return;
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st_theme_node_invalidate_paint_state (node);
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if (CLUTTER_ACTOR_IS_MAPPED (CLUTTER_ACTOR (actor)))
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clutter_actor_queue_redraw (CLUTTER_ACTOR (actor));
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}
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static void
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st_widget_dispose (GObject *gobject)
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{
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StWidget *actor = ST_WIDGET (gobject);
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StWidgetPrivate *priv = ST_WIDGET (actor)->priv;
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if (priv->theme)
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{
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g_object_unref (priv->theme);
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priv->theme = NULL;
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}
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if (priv->theme_node)
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{
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g_object_run_dispose (G_OBJECT (priv->theme_node));
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g_object_unref (priv->theme_node);
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priv->theme_node = NULL;
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}
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st_widget_remove_transition (actor);
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/* The real dispose of this accessible is done on
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* AtkGObjectAccessible weak ref callback
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*/
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if (priv->accessible)
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priv->accessible = NULL;
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if (priv->label_actor)
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{
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g_object_unref (priv->label_actor);
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priv->label_actor = NULL;
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}
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g_signal_handlers_disconnect_by_func (st_texture_cache_get_default (),
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st_widget_texture_cache_changed,
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actor);
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g_clear_object (&priv->prev_first_child);
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g_clear_object (&priv->prev_last_child);
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G_OBJECT_CLASS (st_widget_parent_class)->dispose (gobject);
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}
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static void
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st_widget_finalize (GObject *gobject)
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{
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StWidgetPrivate *priv = ST_WIDGET (gobject)->priv;
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g_free (priv->style_class);
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g_free (priv->pseudo_class);
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g_object_unref (priv->local_state_set);
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g_free (priv->accessible_name);
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g_free (priv->inline_style);
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G_OBJECT_CLASS (st_widget_parent_class)->finalize (gobject);
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}
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static void
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st_widget_get_preferred_width (ClutterActor *self,
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gfloat for_height,
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gfloat *min_width_p,
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gfloat *natural_width_p)
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{
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StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (self));
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st_theme_node_adjust_for_width (theme_node, &for_height);
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CLUTTER_ACTOR_CLASS (st_widget_parent_class)->get_preferred_width (self, for_height, min_width_p, natural_width_p);
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st_theme_node_adjust_preferred_width (theme_node, min_width_p, natural_width_p);
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}
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static void
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st_widget_get_preferred_height (ClutterActor *self,
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gfloat for_width,
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gfloat *min_height_p,
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gfloat *natural_height_p)
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{
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StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (self));
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st_theme_node_adjust_for_width (theme_node, &for_width);
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CLUTTER_ACTOR_CLASS (st_widget_parent_class)->get_preferred_height (self, for_width, min_height_p, natural_height_p);
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st_theme_node_adjust_preferred_height (theme_node, min_height_p, natural_height_p);
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}
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static void
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st_widget_allocate (ClutterActor *actor,
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const ClutterActorBox *box,
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ClutterAllocationFlags flags)
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{
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StThemeNode *theme_node = st_widget_get_theme_node (ST_WIDGET (actor));
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ClutterActorBox content_box;
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/* Note that we can't just chain up to clutter_actor_real_allocate --
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* Clutter does some dirty tricks for backwards compatibility.
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* Clutter also passes the actor's allocation directly to the layout
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* manager, meaning that we can't modify it for children only.
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*/
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clutter_actor_set_allocation (actor, box, flags);
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st_theme_node_get_content_box (theme_node, box, &content_box);
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/* If we've chained up to here, we want to allocate the children using the
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* currently installed layout manager */
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clutter_layout_manager_allocate (clutter_actor_get_layout_manager (actor),
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CLUTTER_CONTAINER (actor),
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&content_box,
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flags);
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}
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/**
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* st_widget_paint_background:
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* @widget: The #StWidget
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*
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* Paint the background of the widget. This is meant to be called by
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* subclasses of StWiget that need to paint the background without
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* painting children.
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*/
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void
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st_widget_paint_background (StWidget *widget)
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{
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StThemeNode *theme_node;
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ClutterActorBox allocation;
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guint8 opacity;
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theme_node = st_widget_get_theme_node (widget);
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clutter_actor_get_allocation_box (CLUTTER_ACTOR (widget), &allocation);
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opacity = clutter_actor_get_paint_opacity (CLUTTER_ACTOR (widget));
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if (widget->priv->transition_animation)
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st_theme_node_transition_paint (widget->priv->transition_animation,
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&allocation,
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opacity);
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else
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st_theme_node_paint (theme_node, &allocation, opacity);
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}
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static void
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st_widget_paint (ClutterActor *actor)
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{
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st_widget_paint_background (ST_WIDGET (actor));
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/* Chain up so we paint children. */
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CLUTTER_ACTOR_CLASS (st_widget_parent_class)->paint (actor);
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}
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static void
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st_widget_parent_set (ClutterActor *widget,
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ClutterActor *old_parent)
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{
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ClutterActorClass *parent_class;
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ClutterActor *new_parent;
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parent_class = CLUTTER_ACTOR_CLASS (st_widget_parent_class);
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if (parent_class->parent_set)
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parent_class->parent_set (widget, old_parent);
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new_parent = clutter_actor_get_parent (widget);
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/* don't send the style changed signal if we no longer have a parent actor */
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if (new_parent)
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st_widget_style_changed (ST_WIDGET (widget));
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}
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static void
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st_widget_map (ClutterActor *actor)
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{
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StWidget *self = ST_WIDGET (actor);
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CLUTTER_ACTOR_CLASS (st_widget_parent_class)->map (actor);
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st_widget_ensure_style (self);
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}
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static void
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st_widget_unmap (ClutterActor *actor)
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{
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StWidget *self = ST_WIDGET (actor);
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StWidgetPrivate *priv = self->priv;
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CLUTTER_ACTOR_CLASS (st_widget_parent_class)->unmap (actor);
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if (priv->track_hover && priv->hover)
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st_widget_set_hover (self, FALSE);
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}
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static void
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notify_children_of_style_change (ClutterActor *self)
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{
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ClutterActorIter iter;
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ClutterActor *actor;
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clutter_actor_iter_init (&iter, self);
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while (clutter_actor_iter_next (&iter, &actor))
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{
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if (ST_IS_WIDGET (actor))
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st_widget_style_changed (ST_WIDGET (actor));
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else
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notify_children_of_style_change (actor);
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}
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}
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static void
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st_widget_real_style_changed (StWidget *self)
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{
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StWidgetPrivate *priv = ST_WIDGET (self)->priv;
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/* application has request this widget is not stylable */
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if (!priv->is_stylable)
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return;
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clutter_actor_queue_redraw ((ClutterActor *) self);
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notify_children_of_style_change ((ClutterActor *) self);
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}
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void
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st_widget_style_changed (StWidget *widget)
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{
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StThemeNode *old_theme_node = NULL;
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widget->priv->is_style_dirty = TRUE;
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if (widget->priv->theme_node)
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{
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old_theme_node = widget->priv->theme_node;
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widget->priv->theme_node = NULL;
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}
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/* update the style only if we are mapped */
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if (CLUTTER_ACTOR_IS_MAPPED (CLUTTER_ACTOR (widget)))
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st_widget_recompute_style (widget, old_theme_node);
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if (old_theme_node)
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g_object_unref (old_theme_node);
|
|
}
|
|
|
|
static void
|
|
on_theme_context_changed (StThemeContext *context,
|
|
ClutterStage *stage)
|
|
{
|
|
notify_children_of_style_change (CLUTTER_ACTOR (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.
|
|
*
|
|
* Note: it is a fatal error to call this on a widget that is
|
|
* not been added to a stage.
|
|
*
|
|
* 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;
|
|
char *pseudo_class, *direction_pseudo_class;
|
|
|
|
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 the widget %s which is not in the stage.",
|
|
st_describe_actor (CLUTTER_ACTOR (widget)));
|
|
}
|
|
|
|
if (parent_node == NULL)
|
|
parent_node = get_root_theme_node (CLUTTER_STAGE (stage));
|
|
|
|
/* Always append a "magic" pseudo class indicating the text
|
|
* direction, to allow to adapt the CSS when necessary without
|
|
* requiring separate style sheets.
|
|
*/
|
|
if (clutter_actor_get_text_direction (CLUTTER_ACTOR (widget)) == CLUTTER_TEXT_DIRECTION_RTL)
|
|
direction_pseudo_class = "rtl";
|
|
else
|
|
direction_pseudo_class = "ltr";
|
|
|
|
if (priv->pseudo_class)
|
|
pseudo_class = g_strconcat(priv->pseudo_class, " ",
|
|
direction_pseudo_class, NULL);
|
|
else
|
|
pseudo_class = direction_pseudo_class;
|
|
|
|
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,
|
|
pseudo_class,
|
|
priv->inline_style);
|
|
|
|
if (pseudo_class != direction_pseudo_class)
|
|
g_free (pseudo_class);
|
|
}
|
|
|
|
return priv->theme_node;
|
|
}
|
|
|
|
/**
|
|
* st_widget_peek_theme_node:
|
|
* @widget: a #StWidget
|
|
*
|
|
* Returns the theme node for the widget if it has already been
|
|
* computed, %NULL if the widget hasn't been added to a stage or the theme
|
|
* node hasn't been computed. If %NULL is returned, then ::style-changed
|
|
* will be reliably emitted before the widget is allocated or painted.
|
|
*
|
|
* 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_peek_theme_node (StWidget *widget)
|
|
{
|
|
StWidgetPrivate *priv = widget->priv;
|
|
|
|
return priv->theme_node;
|
|
}
|
|
|
|
static gboolean
|
|
st_widget_enter (ClutterActor *actor,
|
|
ClutterCrossingEvent *event)
|
|
{
|
|
StWidgetPrivate *priv = ST_WIDGET (actor)->priv;
|
|
|
|
if (priv->track_hover)
|
|
{
|
|
if (clutter_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 (!event->related || !clutter_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_key_focus_in (ClutterActor *actor)
|
|
{
|
|
StWidget *widget = ST_WIDGET (actor);
|
|
|
|
st_widget_add_style_pseudo_class (widget, "focus");
|
|
}
|
|
|
|
static void
|
|
st_widget_key_focus_out (ClutterActor *actor)
|
|
{
|
|
StWidget *widget = ST_WIDGET (actor);
|
|
|
|
st_widget_remove_style_pseudo_class (widget, "focus");
|
|
}
|
|
|
|
static gboolean
|
|
st_widget_key_press_event (ClutterActor *actor,
|
|
ClutterKeyEvent *event)
|
|
{
|
|
if (event->keyval == CLUTTER_KEY_Menu ||
|
|
(event->keyval == CLUTTER_KEY_F10 &&
|
|
(event->modifier_state & CLUTTER_SHIFT_MASK)))
|
|
{
|
|
g_signal_emit (actor, signals[POPUP_MENU], 0);
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
st_widget_get_paint_volume (ClutterActor *self,
|
|
ClutterPaintVolume *volume)
|
|
{
|
|
ClutterActorBox paint_box, alloc_box;
|
|
StThemeNode *theme_node;
|
|
StWidgetPrivate *priv;
|
|
ClutterVertex origin;
|
|
|
|
/* Setting the paint volume does not make sense when we don't have any allocation */
|
|
if (!clutter_actor_has_allocation (self))
|
|
return FALSE;
|
|
|
|
priv = ST_WIDGET (self)->priv;
|
|
|
|
theme_node = st_widget_get_theme_node (ST_WIDGET (self));
|
|
clutter_actor_get_allocation_box (self, &alloc_box);
|
|
|
|
if (priv->transition_animation)
|
|
st_theme_node_transition_get_paint_box (priv->transition_animation,
|
|
&alloc_box, &paint_box);
|
|
else
|
|
st_theme_node_get_paint_box (theme_node, &alloc_box, &paint_box);
|
|
|
|
origin.x = paint_box.x1 - alloc_box.x1;
|
|
origin.y = paint_box.y1 - alloc_box.y1;
|
|
origin.z = 0.0f;
|
|
|
|
clutter_paint_volume_set_origin (volume, &origin);
|
|
clutter_paint_volume_set_width (volume, paint_box.x2 - paint_box.x1);
|
|
clutter_paint_volume_set_height (volume, paint_box.y2 - paint_box.y1);
|
|
|
|
if (!clutter_actor_get_clip_to_allocation (self))
|
|
{
|
|
ClutterActor *child;
|
|
/* Based on ClutterGroup/ClutterBox; include the children's
|
|
* paint volumes, since they may paint outside our allocation.
|
|
*/
|
|
for (child = clutter_actor_get_first_child (self);
|
|
child != NULL;
|
|
child = clutter_actor_get_next_sibling (child))
|
|
{
|
|
const ClutterPaintVolume *child_volume;
|
|
|
|
child_volume = clutter_actor_get_transformed_paint_volume (child, self);
|
|
if (!child_volume)
|
|
return FALSE;
|
|
|
|
clutter_paint_volume_union (volume, child_volume);
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static GList *
|
|
st_widget_real_get_focus_chain (StWidget *widget)
|
|
{
|
|
return clutter_actor_get_children (CLUTTER_ACTOR (widget));
|
|
}
|
|
|
|
|
|
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->get_paint_volume = st_widget_get_paint_volume;
|
|
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->key_focus_in = st_widget_key_focus_in;
|
|
actor_class->key_focus_out = st_widget_key_focus_out;
|
|
actor_class->key_press_event = st_widget_key_press_event;
|
|
|
|
actor_class->get_accessible = st_widget_get_accessible;
|
|
|
|
klass->style_changed = st_widget_real_style_changed;
|
|
klass->navigate_focus = st_widget_real_navigate_focus;
|
|
klass->get_accessible_type = st_widget_accessible_get_type;
|
|
klass->get_focus_chain = st_widget_real_get_focus_chain;
|
|
|
|
/**
|
|
* 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: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:can-focus:
|
|
*
|
|
* Whether or not the widget can be focused via keyboard navigation.
|
|
*/
|
|
pspec = g_param_spec_boolean ("can-focus",
|
|
"Can focus",
|
|
"Whether the widget can be focused via keyboard navigation",
|
|
FALSE,
|
|
ST_PARAM_READWRITE);
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_CAN_FOCUS,
|
|
pspec);
|
|
|
|
/**
|
|
* ClutterActor:label-actor:
|
|
*
|
|
* An actor that labels this widget.
|
|
*/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_LABEL_ACTOR,
|
|
g_param_spec_object ("label-actor",
|
|
"Label",
|
|
"Label that identifies this widget",
|
|
CLUTTER_TYPE_ACTOR,
|
|
ST_PARAM_READWRITE));
|
|
/**
|
|
* StWidget:accessible-role:
|
|
*
|
|
* The accessible role of this object
|
|
*/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_ACCESSIBLE_ROLE,
|
|
g_param_spec_enum ("accessible-role",
|
|
"Accessible Role",
|
|
"The accessible role of this object",
|
|
ATK_TYPE_ROLE,
|
|
ATK_ROLE_INVALID,
|
|
G_PARAM_READWRITE));
|
|
|
|
|
|
/**
|
|
* StWidget:accessible-name:
|
|
*
|
|
* Object instance's name for assistive technology access.
|
|
*/
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_ACCESSIBLE_NAME,
|
|
g_param_spec_string ("accessible-name",
|
|
"Accessible name",
|
|
"Object instance's name for assistive technology access.",
|
|
NULL,
|
|
ST_PARAM_READWRITE));
|
|
|
|
/**
|
|
* StWidget::style-changed:
|
|
* @widget: the #StWidget
|
|
*
|
|
* 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, NULL,
|
|
G_TYPE_NONE, 0);
|
|
|
|
/**
|
|
* StWidget::popup-menu:
|
|
* @widget: the #StWidget
|
|
*
|
|
* Emitted when the user has requested a context menu (eg, via a
|
|
* keybinding)
|
|
*/
|
|
signals[POPUP_MENU] =
|
|
g_signal_new ("popup-menu",
|
|
G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST,
|
|
G_STRUCT_OFFSET (StWidgetClass, popup_menu),
|
|
NULL, NULL, NULL,
|
|
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;
|
|
|
|
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 (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: (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;
|
|
|
|
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_reactive_notify (StWidget *widget,
|
|
GParamSpec *pspec,
|
|
gpointer data)
|
|
{
|
|
if (clutter_actor_get_reactive (CLUTTER_ACTOR (widget)))
|
|
st_widget_remove_style_pseudo_class (widget, "insensitive");
|
|
else
|
|
st_widget_add_style_pseudo_class (widget, "insensitive");
|
|
}
|
|
|
|
static void
|
|
st_widget_first_child_notify (StWidget *widget,
|
|
GParamSpec *pspec,
|
|
gpointer data)
|
|
{
|
|
ClutterActor *first_child;
|
|
|
|
if (widget->priv->prev_first_child != NULL)
|
|
{
|
|
st_widget_remove_style_pseudo_class (widget->priv->prev_first_child, "first-child");
|
|
g_clear_object (&widget->priv->prev_first_child);
|
|
}
|
|
|
|
first_child = clutter_actor_get_first_child (CLUTTER_ACTOR (widget));
|
|
|
|
if (first_child == NULL)
|
|
return;
|
|
|
|
if (ST_IS_WIDGET (first_child))
|
|
{
|
|
st_widget_add_style_pseudo_class (ST_WIDGET (first_child), "first-child");
|
|
widget->priv->prev_first_child = g_object_ref (ST_WIDGET (first_child));
|
|
}
|
|
}
|
|
|
|
static void
|
|
st_widget_last_child_notify (StWidget *widget,
|
|
GParamSpec *pspec,
|
|
gpointer data)
|
|
{
|
|
ClutterActor *last_child;
|
|
|
|
if (widget->priv->prev_last_child != NULL)
|
|
{
|
|
st_widget_remove_style_pseudo_class (widget->priv->prev_last_child, "last-child");
|
|
g_clear_object (&widget->priv->prev_last_child);
|
|
}
|
|
|
|
last_child = clutter_actor_get_last_child (CLUTTER_ACTOR (widget));
|
|
|
|
if (last_child == NULL)
|
|
return;
|
|
|
|
if (ST_IS_WIDGET (last_child))
|
|
{
|
|
st_widget_add_style_pseudo_class (ST_WIDGET (last_child), "last-child");
|
|
widget->priv->prev_last_child = g_object_ref (ST_WIDGET (last_child));
|
|
}
|
|
}
|
|
|
|
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;
|
|
priv->local_state_set = atk_state_set_new ();
|
|
|
|
/* connect style changed */
|
|
g_signal_connect (actor, "notify::name", G_CALLBACK (st_widget_name_notify), NULL);
|
|
g_signal_connect (actor, "notify::reactive", G_CALLBACK (st_widget_reactive_notify), NULL);
|
|
|
|
g_signal_connect (actor, "notify::first-child", G_CALLBACK (st_widget_first_child_notify), NULL);
|
|
g_signal_connect (actor, "notify::last-child", G_CALLBACK (st_widget_last_child_notify), NULL);
|
|
g_signal_connect (st_texture_cache_get_default (), "texture-file-changed",
|
|
G_CALLBACK (st_widget_texture_cache_changed), actor);
|
|
}
|
|
|
|
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;
|
|
gboolean paint_equal;
|
|
|
|
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);
|
|
|
|
paint_equal = old_theme_node && st_theme_node_paint_equal (old_theme_node, new_theme_node);
|
|
|
|
if (paint_equal)
|
|
st_theme_node_copy_cached_paint_state (new_theme_node, old_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 && !paint_equal)
|
|
{
|
|
/* Since our transitions are only of the painting done by StThemeNode, we
|
|
* only want to start a transition when what is painted changes; if
|
|
* other visual aspects like the foreground color of a label change,
|
|
* we can't animate that anyways.
|
|
*/
|
|
|
|
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);
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
else
|
|
st_widget_set_hover (widget, FALSE);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* st_widget_get_track_hover:
|
|
* @widget: A #StWidget
|
|
*
|
|
* Returns the current value of the track-hover property. See
|
|
* st_widget_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 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");
|
|
else
|
|
st_widget_remove_style_pseudo_class (widget, "hover");
|
|
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);
|
|
if (pointer_actor)
|
|
st_widget_set_hover (widget, clutter_actor_contains (CLUTTER_ACTOR (widget), pointer_actor));
|
|
else
|
|
st_widget_set_hover (widget, FALSE);
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
/**
|
|
* st_widget_set_can_focus:
|
|
* @widget: A #StWidget
|
|
* @can_focus: %TRUE if the widget can receive keyboard focus
|
|
* via keyboard navigation
|
|
*
|
|
* Marks @widget as being able to receive keyboard focus via
|
|
* keyboard navigation.
|
|
*/
|
|
void
|
|
st_widget_set_can_focus (StWidget *widget,
|
|
gboolean can_focus)
|
|
{
|
|
StWidgetPrivate *priv;
|
|
|
|
g_return_if_fail (ST_IS_WIDGET (widget));
|
|
|
|
priv = widget->priv;
|
|
|
|
if (priv->can_focus != can_focus)
|
|
{
|
|
priv->can_focus = can_focus;
|
|
g_object_notify (G_OBJECT (widget), "can-focus");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* st_widget_get_can_focus:
|
|
* @widget: A #StWidget
|
|
*
|
|
* Returns the current value of the can-focus property. See
|
|
* st_widget_set_can_focus() for more information.
|
|
*
|
|
* Returns: current value of can-focus on @widget
|
|
*/
|
|
gboolean
|
|
st_widget_get_can_focus (StWidget *widget)
|
|
{
|
|
g_return_val_if_fail (ST_IS_WIDGET (widget), FALSE);
|
|
|
|
return widget->priv->can_focus;
|
|
}
|
|
|
|
/* filter @children to contain only only actors that overlap @rbox
|
|
* when moving in @direction. (Assuming no transformations.)
|
|
*/
|
|
static GList *
|
|
filter_by_position (GList *children,
|
|
ClutterActorBox *rbox,
|
|
GtkDirectionType direction)
|
|
{
|
|
ClutterActorBox cbox;
|
|
ClutterVertex abs_vertices[4];
|
|
GList *l, *ret;
|
|
ClutterActor *child;
|
|
|
|
for (l = children, ret = NULL; l; l = l->next)
|
|
{
|
|
child = l->data;
|
|
clutter_actor_get_abs_allocation_vertices (child, abs_vertices);
|
|
clutter_actor_box_from_vertices (&cbox, abs_vertices);
|
|
|
|
/* Filter out children if they are in the wrong direction from
|
|
* @rbox, or if they don't overlap it. To account for floating-
|
|
* point imprecision, an actor is "down" (etc.) from an another
|
|
* actor even if it overlaps it by up to 0.1 pixels.
|
|
*/
|
|
switch (direction)
|
|
{
|
|
case GTK_DIR_UP:
|
|
if (cbox.y2 > rbox->y1 + 0.1)
|
|
continue;
|
|
break;
|
|
|
|
case GTK_DIR_DOWN:
|
|
if (cbox.y1 < rbox->y2 - 0.1)
|
|
continue;
|
|
break;
|
|
|
|
case GTK_DIR_LEFT:
|
|
if (cbox.x2 > rbox->x1 + 0.1)
|
|
continue;
|
|
break;
|
|
|
|
case GTK_DIR_RIGHT:
|
|
if (cbox.x1 < rbox->x2 - 0.1)
|
|
continue;
|
|
break;
|
|
|
|
default:
|
|
g_return_val_if_reached (NULL);
|
|
}
|
|
|
|
ret = g_list_prepend (ret, child);
|
|
}
|
|
|
|
g_list_free (children);
|
|
return ret;
|
|
}
|
|
|
|
|
|
typedef struct {
|
|
GtkDirectionType direction;
|
|
ClutterActorBox box;
|
|
} StWidgetChildSortData;
|
|
|
|
static int
|
|
sort_by_position (gconstpointer a,
|
|
gconstpointer b,
|
|
gpointer user_data)
|
|
{
|
|
ClutterActor *actor_a = (ClutterActor *)a;
|
|
ClutterActor *actor_b = (ClutterActor *)b;
|
|
StWidgetChildSortData *sort_data = user_data;
|
|
GtkDirectionType direction = sort_data->direction;
|
|
ClutterActorBox abox, bbox;
|
|
ClutterVertex abs_vertices[4];
|
|
int ax, ay, bx, by;
|
|
int cmp, fmid;
|
|
|
|
/* Determine the relationship, relative to motion in @direction, of
|
|
* the center points of the two actors. Eg, for %GTK_DIR_UP, we
|
|
* return a negative number if @actor_a's center is below @actor_b's
|
|
* center, and postive if vice versa, which will result in an
|
|
* overall list sorted bottom-to-top.
|
|
*/
|
|
|
|
clutter_actor_get_abs_allocation_vertices (actor_a, abs_vertices);
|
|
clutter_actor_box_from_vertices (&abox, abs_vertices);
|
|
ax = (int)(abox.x1 + abox.x2) / 2;
|
|
ay = (int)(abox.y1 + abox.y2) / 2;
|
|
clutter_actor_get_abs_allocation_vertices (actor_b, abs_vertices);
|
|
clutter_actor_box_from_vertices (&bbox, abs_vertices);
|
|
bx = (int)(bbox.x1 + bbox.x2) / 2;
|
|
by = (int)(bbox.y1 + bbox.y2) / 2;
|
|
|
|
switch (direction)
|
|
{
|
|
case GTK_DIR_UP:
|
|
cmp = by - ay;
|
|
break;
|
|
case GTK_DIR_DOWN:
|
|
cmp = ay - by;
|
|
break;
|
|
case GTK_DIR_LEFT:
|
|
cmp = bx - ax;
|
|
break;
|
|
case GTK_DIR_RIGHT:
|
|
cmp = ax - bx;
|
|
break;
|
|
default:
|
|
g_return_val_if_reached (0);
|
|
}
|
|
|
|
if (cmp)
|
|
return cmp;
|
|
|
|
/* If two actors have the same center on the axis being sorted,
|
|
* prefer the one that is closer to the center of the current focus
|
|
* actor on the other axis. Eg, for %GTK_DIR_UP, prefer whichever
|
|
* of @actor_a and @actor_b has a horizontal center closest to the
|
|
* current focus actor's horizontal center.
|
|
*
|
|
* (This matches GTK's behavior.)
|
|
*/
|
|
switch (direction)
|
|
{
|
|
case GTK_DIR_UP:
|
|
case GTK_DIR_DOWN:
|
|
fmid = (int)(sort_data->box.x1 + sort_data->box.x2) / 2;
|
|
return abs (ax - fmid) - abs (bx - fmid);
|
|
case GTK_DIR_LEFT:
|
|
case GTK_DIR_RIGHT:
|
|
fmid = (int)(sort_data->box.y1 + sort_data->box.y2) / 2;
|
|
return abs (ay - fmid) - abs (by - fmid);
|
|
default:
|
|
g_return_val_if_reached (0);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
st_widget_real_navigate_focus (StWidget *widget,
|
|
ClutterActor *from,
|
|
GtkDirectionType direction)
|
|
{
|
|
ClutterActor *widget_actor, *focus_child;
|
|
GList *children, *l;
|
|
|
|
widget_actor = CLUTTER_ACTOR (widget);
|
|
if (from == widget_actor)
|
|
return FALSE;
|
|
|
|
/* Figure out if @from is a descendant of @widget, and if so,
|
|
* set @focus_child to the immediate child of @widget that
|
|
* contains (or *is*) @from.
|
|
*/
|
|
focus_child = from;
|
|
while (focus_child && clutter_actor_get_parent (focus_child) != widget_actor)
|
|
focus_child = clutter_actor_get_parent (focus_child);
|
|
|
|
if (widget->priv->can_focus)
|
|
{
|
|
if (!focus_child)
|
|
{
|
|
if (CLUTTER_ACTOR_IS_MAPPED (widget_actor))
|
|
{
|
|
/* Accept focus from outside */
|
|
clutter_actor_grab_key_focus (widget_actor);
|
|
return TRUE;
|
|
}
|
|
else
|
|
{
|
|
/* Refuse to set focus on hidden actors */
|
|
return FALSE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* Yield focus from within: since @widget itself is
|
|
* focusable we don't allow the focus to be navigated
|
|
* within @widget.
|
|
*/
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/* See if we can navigate within @focus_child */
|
|
if (focus_child && ST_IS_WIDGET (focus_child))
|
|
{
|
|
if (st_widget_navigate_focus (ST_WIDGET (focus_child), from, direction, FALSE))
|
|
return TRUE;
|
|
}
|
|
|
|
children = st_widget_get_focus_chain (widget);
|
|
if (direction == GTK_DIR_TAB_FORWARD ||
|
|
direction == GTK_DIR_TAB_BACKWARD)
|
|
{
|
|
/* At this point we know that we want to navigate focus to one of
|
|
* @widget's immediate children; the next one after @focus_child, or the
|
|
* first one if @focus_child is %NULL. (With "next" and "first" being
|
|
* determined by @direction.)
|
|
*/
|
|
if (direction == GTK_DIR_TAB_BACKWARD)
|
|
children = g_list_reverse (children);
|
|
|
|
if (focus_child)
|
|
{
|
|
/* Remove focus_child and any earlier children */
|
|
while (children && children->data != focus_child)
|
|
children = g_list_delete_link (children, children);
|
|
if (children)
|
|
children = g_list_delete_link (children, children);
|
|
}
|
|
}
|
|
else /* direction is an arrow key, not tab */
|
|
{
|
|
StWidgetChildSortData sort_data;
|
|
ClutterVertex abs_vertices[4];
|
|
|
|
/* Compute the allocation box of the previous focused actor. If there
|
|
* was no previous focus, use the coordinates of the appropriate edge of
|
|
* @widget.
|
|
*
|
|
* Note that all of this code assumes the actors are not
|
|
* transformed (or at most, they are all scaled by the same
|
|
* amount). If @widget or any of its children is rotated, or
|
|
* any child is inconsistently scaled, then the focus chain will
|
|
* probably be unpredictable.
|
|
*/
|
|
if (from)
|
|
{
|
|
clutter_actor_get_abs_allocation_vertices (from, abs_vertices);
|
|
clutter_actor_box_from_vertices (&sort_data.box, abs_vertices);
|
|
}
|
|
else
|
|
{
|
|
clutter_actor_get_abs_allocation_vertices (widget_actor, abs_vertices);
|
|
clutter_actor_box_from_vertices (&sort_data.box, abs_vertices);
|
|
switch (direction)
|
|
{
|
|
case GTK_DIR_UP:
|
|
sort_data.box.y1 = sort_data.box.y2;
|
|
break;
|
|
case GTK_DIR_DOWN:
|
|
sort_data.box.y2 = sort_data.box.y1;
|
|
break;
|
|
case GTK_DIR_LEFT:
|
|
sort_data.box.x1 = sort_data.box.x2;
|
|
break;
|
|
case GTK_DIR_RIGHT:
|
|
sort_data.box.x2 = sort_data.box.x1;
|
|
break;
|
|
default:
|
|
g_warn_if_reached ();
|
|
}
|
|
}
|
|
sort_data.direction = direction;
|
|
|
|
if (from)
|
|
children = filter_by_position (children, &sort_data.box, direction);
|
|
if (children)
|
|
children = g_list_sort_with_data (children, sort_by_position, &sort_data);
|
|
}
|
|
|
|
/* Now try each child in turn */
|
|
for (l = children; l; l = l->next)
|
|
{
|
|
if (ST_IS_WIDGET (l->data))
|
|
{
|
|
if (st_widget_navigate_focus (l->data, from, direction, FALSE))
|
|
{
|
|
g_list_free (children);
|
|
return TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
g_list_free (children);
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/**
|
|
* st_widget_navigate_focus:
|
|
* @widget: the "top level" container
|
|
* @from: (allow-none): the actor that the focus is coming from
|
|
* @direction: the direction focus is moving in
|
|
* @wrap_around: whether focus should wrap around
|
|
*
|
|
* Tries to update the keyboard focus within @widget in response to a
|
|
* keyboard event.
|
|
*
|
|
* If @from is a descendant of @widget, this attempts to move the
|
|
* keyboard focus to the next descendant of @widget (in the order
|
|
* implied by @direction) that has the #StWidget:can-focus property
|
|
* set. If @from is %NULL, this attempts to focus either @widget
|
|
* itself, or its first descendant in the order implied by
|
|
* @direction. If @from is outside of @widget, it behaves as if it was
|
|
* a descendant if @direction is one of the directional arrows and as
|
|
* if it was %NULL otherwise.
|
|
*
|
|
* If a container type is marked #StWidget:can-focus, the expected
|
|
* behavior is that it will only take up a single slot on the focus
|
|
* chain as a whole, rather than allowing navigation between its child
|
|
* actors (or having a distinction between itself being focused and
|
|
* one of its children being focused).
|
|
*
|
|
* Some widget classes might have slightly different behavior from the
|
|
* above, where that would make more sense.
|
|
*
|
|
* If @wrap_around is %TRUE and @from is a child of @widget, but the
|
|
* widget has no further children that can accept the focus in the
|
|
* given direction, then st_widget_navigate_focus() will try a second
|
|
* time, using a %NULL @from, which should cause it to reset the focus
|
|
* to the first available widget in the given direction.
|
|
*
|
|
* Return value: %TRUE if clutter_actor_grab_key_focus() has been
|
|
* called on an actor. %FALSE if not.
|
|
*/
|
|
gboolean
|
|
st_widget_navigate_focus (StWidget *widget,
|
|
ClutterActor *from,
|
|
GtkDirectionType direction,
|
|
gboolean wrap_around)
|
|
{
|
|
g_return_val_if_fail (ST_IS_WIDGET (widget), FALSE);
|
|
|
|
if (ST_WIDGET_GET_CLASS (widget)->navigate_focus (widget, from, direction))
|
|
return TRUE;
|
|
if (wrap_around && from && clutter_actor_contains (CLUTTER_ACTOR (widget), from))
|
|
return ST_WIDGET_GET_CLASS (widget)->navigate_focus (widget, NULL, direction);
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
append_actor_text (GString *desc,
|
|
ClutterActor *actor)
|
|
{
|
|
if (CLUTTER_IS_TEXT (actor))
|
|
{
|
|
g_string_append_printf (desc, " (\"%s\")",
|
|
clutter_text_get_text (CLUTTER_TEXT (actor)));
|
|
return TRUE;
|
|
}
|
|
else if (ST_IS_LABEL (actor))
|
|
{
|
|
g_string_append_printf (desc, " (\"%s\")",
|
|
st_label_get_text (ST_LABEL (actor)));
|
|
return TRUE;
|
|
}
|
|
else
|
|
return FALSE;
|
|
}
|
|
|
|
/**
|
|
* st_describe_actor:
|
|
* @actor: a #ClutterActor
|
|
*
|
|
* Creates a string describing @actor, for use in debugging. This
|
|
* includes the class name and actor name (if any), plus if @actor
|
|
* is an #StWidget, its style class and pseudo class names.
|
|
*
|
|
* Return value: the debug name.
|
|
*/
|
|
char *
|
|
st_describe_actor (ClutterActor *actor)
|
|
{
|
|
GString *desc;
|
|
const char *name;
|
|
int i;
|
|
|
|
if (!actor)
|
|
return g_strdup ("[null]");
|
|
|
|
desc = g_string_new (NULL);
|
|
g_string_append_printf (desc, "[%p %s", actor,
|
|
G_OBJECT_TYPE_NAME (actor));
|
|
|
|
if (ST_IS_WIDGET (actor))
|
|
{
|
|
const char *style_class = st_widget_get_style_class_name (ST_WIDGET (actor));
|
|
const char *pseudo_class = st_widget_get_style_pseudo_class (ST_WIDGET (actor));
|
|
char **classes;
|
|
|
|
if (style_class)
|
|
{
|
|
classes = g_strsplit (style_class, ",", -1);
|
|
for (i = 0; classes[i]; i++)
|
|
{
|
|
g_strchug (classes[i]);
|
|
g_string_append_printf (desc, ".%s", classes[i]);
|
|
}
|
|
g_strfreev (classes);
|
|
}
|
|
|
|
if (pseudo_class)
|
|
{
|
|
classes = g_strsplit (pseudo_class, ",", -1);
|
|
for (i = 0; classes[i]; i++)
|
|
{
|
|
g_strchug (classes[i]);
|
|
g_string_append_printf (desc, ":%s", classes[i]);
|
|
}
|
|
g_strfreev (classes);
|
|
}
|
|
}
|
|
|
|
name = clutter_actor_get_name (actor);
|
|
if (name)
|
|
g_string_append_printf (desc, " \"%s\"", name);
|
|
|
|
if (!append_actor_text (desc, actor))
|
|
{
|
|
GList *children, *l;
|
|
|
|
/* Do a limited search of @actor's children looking for a label */
|
|
children = clutter_actor_get_children (actor);
|
|
for (l = children, i = 0; l && i < 20; l = l->next, i++)
|
|
{
|
|
if (append_actor_text (desc, l->data))
|
|
break;
|
|
children = g_list_concat (children, clutter_actor_get_children (l->data));
|
|
}
|
|
g_list_free (children);
|
|
}
|
|
|
|
g_string_append_c (desc, ']');
|
|
|
|
return g_string_free (desc, FALSE);
|
|
}
|
|
|
|
/**
|
|
* st_set_slow_down_factor:
|
|
* @factor: new slow-down factor
|
|
*
|
|
* Set a global factor applied to all animation durations
|
|
*/
|
|
void
|
|
st_set_slow_down_factor (gfloat factor)
|
|
{
|
|
st_slow_down_factor = factor;
|
|
}
|
|
|
|
/**
|
|
* st_get_slow_down_factor:
|
|
*
|
|
* Returns: the global factor applied to all animation durations
|
|
*/
|
|
gfloat
|
|
st_get_slow_down_factor ()
|
|
{
|
|
return st_slow_down_factor;
|
|
}
|
|
|
|
|
|
/**
|
|
* st_widget_get_label_actor:
|
|
* @widget: a #StWidget
|
|
*
|
|
* Gets the label that identifies @widget if it is defined
|
|
*
|
|
* Return value: (transfer none): the label that identifies the widget
|
|
*/
|
|
ClutterActor *
|
|
st_widget_get_label_actor (StWidget *widget)
|
|
{
|
|
g_return_val_if_fail (ST_IS_WIDGET (widget), NULL);
|
|
|
|
return widget->priv->label_actor;
|
|
}
|
|
|
|
/**
|
|
* st_widget_set_label_actor:
|
|
* @widget: a #StWidget
|
|
* @label: a #ClutterActor
|
|
*
|
|
* Sets @label as the #ClutterActor that identifies (labels)
|
|
* @widget. @label can be %NULL to indicate that @widget is not
|
|
* labelled any more
|
|
*/
|
|
|
|
void
|
|
st_widget_set_label_actor (StWidget *widget,
|
|
ClutterActor *label)
|
|
{
|
|
g_return_if_fail (ST_IS_WIDGET (widget));
|
|
|
|
if (widget->priv->label_actor != label)
|
|
{
|
|
if (widget->priv->label_actor)
|
|
g_object_unref (widget->priv->label_actor);
|
|
|
|
if (label != NULL)
|
|
widget->priv->label_actor = g_object_ref (label);
|
|
else
|
|
widget->priv->label_actor = NULL;
|
|
|
|
g_object_notify (G_OBJECT (widget), "label-actor");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* st_widget_set_accessible_name:
|
|
* @widget: widget to set the accessible name for
|
|
* @name: (allow-none): a character string to be set as the accessible name
|
|
*
|
|
* This method sets @name as the accessible name for @widget.
|
|
*
|
|
* Usually you will have no need to set the accessible name for an
|
|
* object, as usually there is a label for most of the interface
|
|
* elements. So in general it is better to just use
|
|
* @st_widget_set_label_actor. This method is only required when you
|
|
* need to set an accessible name and there is no available label
|
|
* object.
|
|
*
|
|
*/
|
|
void
|
|
st_widget_set_accessible_name (StWidget *widget,
|
|
const gchar *name)
|
|
{
|
|
g_return_if_fail (ST_IS_WIDGET (widget));
|
|
|
|
if (widget->priv->accessible_name != NULL)
|
|
g_free (widget->priv->accessible_name);
|
|
|
|
widget->priv->accessible_name = g_strdup (name);
|
|
g_object_notify (G_OBJECT (widget), "accessible-name");
|
|
}
|
|
|
|
/**
|
|
* st_widget_get_accessible_name:
|
|
* @widget: widget to get the accessible name for
|
|
*
|
|
* Gets the accessible name for this widget. See
|
|
* st_widget_set_accessible_name() for more information.
|
|
*
|
|
* Return value: a character string representing the accessible name
|
|
* of the widget.
|
|
*/
|
|
const gchar *
|
|
st_widget_get_accessible_name (StWidget *widget)
|
|
{
|
|
g_return_val_if_fail (ST_IS_WIDGET (widget), NULL);
|
|
|
|
return widget->priv->accessible_name;
|
|
}
|
|
|
|
/**
|
|
* st_widget_set_accessible_role:
|
|
* @widget: widget to set the accessible role for
|
|
* @role: The role to use
|
|
*
|
|
* This method sets @role as the accessible role for @widget. This
|
|
* role describes what kind of user interface element @widget is and
|
|
* is provided so that assistive technologies know how to present
|
|
* @widget to the user.
|
|
*
|
|
* Usually you will have no need to set the accessible role for an
|
|
* object, as this information is extracted from the context of the
|
|
* object (ie: a #StButton has by default a push button role). This
|
|
* method is only required when you need to redefine the role
|
|
* currently associated with the widget, for instance if it is being
|
|
* used in an unusual way (ie: a #StButton used as a togglebutton), or
|
|
* if a generic object is used directly (ie: a container as a menu
|
|
* item).
|
|
*
|
|
* If @role is #ATK_ROLE_INVALID, the role will not be changed
|
|
* and the accessible's default role will be used instead.
|
|
*/
|
|
void
|
|
st_widget_set_accessible_role (StWidget *widget,
|
|
AtkRole role)
|
|
{
|
|
g_return_if_fail (ST_IS_WIDGET (widget));
|
|
|
|
widget->priv->accessible_role = role;
|
|
|
|
g_object_notify (G_OBJECT (widget), "accessible-role");
|
|
}
|
|
|
|
|
|
/**
|
|
* st_widget_get_accessible_role:
|
|
* @widget: widget to get the accessible role for
|
|
*
|
|
* Gets the #AtkRole for this widget. See
|
|
* st_widget_set_accessible_role() for more information.
|
|
*
|
|
* Return value: accessible #AtkRole for this widget
|
|
*/
|
|
AtkRole
|
|
st_widget_get_accessible_role (StWidget *widget)
|
|
{
|
|
AtkObject *accessible = NULL;
|
|
AtkRole role = ATK_ROLE_INVALID;
|
|
|
|
g_return_val_if_fail (ST_IS_WIDGET (widget), ATK_ROLE_INVALID);
|
|
|
|
if (widget->priv->accessible_role != ATK_ROLE_INVALID)
|
|
role = widget->priv->accessible_role;
|
|
else if (widget->priv->accessible != NULL)
|
|
role = atk_object_get_role (accessible);
|
|
|
|
return role;
|
|
}
|
|
|
|
static void
|
|
notify_accessible_state_change (StWidget *widget,
|
|
AtkStateType state,
|
|
gboolean value)
|
|
{
|
|
if (widget->priv->accessible != NULL)
|
|
atk_object_notify_state_change (widget->priv->accessible, state, value);
|
|
}
|
|
|
|
/**
|
|
* st_widget_add_accessible_state:
|
|
* @widget: A #StWidget
|
|
* @state: #AtkStateType state to add
|
|
*
|
|
* This method adds @state as one of the accessible states for
|
|
* @widget. The list of states of a widget describes the current state
|
|
* of user interface element @widget and is provided so that assistive
|
|
* technologies know how to present @widget to the user.
|
|
*
|
|
* Usually you will have no need to add accessible states for an
|
|
* object, as the accessible object can extract most of the states
|
|
* from the object itself (ie: a #StButton knows when it is pressed).
|
|
* This method is only required when one cannot extract the
|
|
* information automatically from the object itself (i.e.: a generic
|
|
* container used as a toggle menu item will not automatically include
|
|
* the toggled state).
|
|
*
|
|
*/
|
|
void
|
|
st_widget_add_accessible_state (StWidget *widget,
|
|
AtkStateType state)
|
|
{
|
|
g_return_if_fail (ST_IS_WIDGET (widget));
|
|
|
|
if (atk_state_set_add_state (widget->priv->local_state_set, state))
|
|
notify_accessible_state_change (widget, state, TRUE);
|
|
}
|
|
|
|
/**
|
|
* st_widget_remove_accessible_state:
|
|
* @widget: A #StWidget
|
|
* @state: #AtkState state to remove
|
|
*
|
|
* This method removes @state as on of the accessible states for
|
|
* @widget. See st_widget_add_accessible_state() for more information.
|
|
*
|
|
*/
|
|
void
|
|
st_widget_remove_accessible_state (StWidget *widget,
|
|
AtkStateType state)
|
|
{
|
|
g_return_if_fail (ST_IS_WIDGET (widget));
|
|
|
|
if (atk_state_set_remove_state (widget->priv->local_state_set, state))
|
|
notify_accessible_state_change (widget, state, FALSE);
|
|
}
|
|
|
|
/******************************************************************************/
|
|
/*************************** ACCESSIBILITY SUPPORT ****************************/
|
|
/******************************************************************************/
|
|
|
|
/* GObject */
|
|
|
|
static void st_widget_accessible_class_init (StWidgetAccessibleClass *klass);
|
|
static void st_widget_accessible_init (StWidgetAccessible *widget);
|
|
static void st_widget_accessible_dispose (GObject *gobject);
|
|
|
|
/* AtkObject */
|
|
static AtkStateSet *st_widget_accessible_ref_state_set (AtkObject *obj);
|
|
static void st_widget_accessible_initialize (AtkObject *obj,
|
|
gpointer data);
|
|
static AtkRole st_widget_accessible_get_role (AtkObject *obj);
|
|
|
|
/* Private methods */
|
|
static void on_pseudo_class_notify (GObject *gobject,
|
|
GParamSpec *pspec,
|
|
gpointer data);
|
|
static void on_can_focus_notify (GObject *gobject,
|
|
GParamSpec *pspec,
|
|
gpointer data);
|
|
static void on_label_notify (GObject *gobject,
|
|
GParamSpec *pspec,
|
|
gpointer data);
|
|
static void check_pseudo_class (StWidgetAccessible *self,
|
|
StWidget *widget);
|
|
static void check_labels (StWidgetAccessible *self,
|
|
StWidget *widget);
|
|
|
|
G_DEFINE_TYPE (StWidgetAccessible, st_widget_accessible, CALLY_TYPE_ACTOR)
|
|
|
|
#define ST_WIDGET_ACCESSIBLE_GET_PRIVATE(obj) \
|
|
(G_TYPE_INSTANCE_GET_PRIVATE ((obj), ST_TYPE_WIDGET_ACCESSIBLE, \
|
|
StWidgetAccessiblePrivate))
|
|
|
|
struct _StWidgetAccessiblePrivate
|
|
{
|
|
/* Cached values (used to avoid extra notifications) */
|
|
gboolean selected;
|
|
gboolean checked;
|
|
|
|
/* The current_label. Right now there are the proper atk
|
|
* relationships between this object and the label
|
|
*/
|
|
AtkObject *current_label;
|
|
};
|
|
|
|
|
|
static AtkObject *
|
|
st_widget_get_accessible (ClutterActor *actor)
|
|
{
|
|
StWidget *widget = NULL;
|
|
|
|
g_return_val_if_fail (ST_IS_WIDGET (actor), NULL);
|
|
|
|
widget = ST_WIDGET (actor);
|
|
|
|
if (widget->priv->accessible == NULL)
|
|
{
|
|
widget->priv->accessible =
|
|
g_object_new (ST_WIDGET_GET_CLASS (widget)->get_accessible_type (),
|
|
NULL);
|
|
|
|
atk_object_initialize (widget->priv->accessible, actor);
|
|
}
|
|
|
|
return widget->priv->accessible;
|
|
}
|
|
|
|
static const gchar *
|
|
st_widget_accessible_get_name (AtkObject *obj)
|
|
{
|
|
const gchar* name = NULL;
|
|
|
|
g_return_val_if_fail (ST_IS_WIDGET_ACCESSIBLE (obj), NULL);
|
|
|
|
name = ATK_OBJECT_CLASS (st_widget_accessible_parent_class)->get_name (obj);
|
|
if (name == NULL)
|
|
{
|
|
StWidget *widget = NULL;
|
|
|
|
widget = ST_WIDGET (atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (obj)));
|
|
|
|
if (widget == NULL)
|
|
name = NULL;
|
|
else
|
|
name = widget->priv->accessible_name;
|
|
}
|
|
|
|
return name;
|
|
}
|
|
|
|
static void
|
|
st_widget_accessible_class_init (StWidgetAccessibleClass *klass)
|
|
{
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
AtkObjectClass *atk_class = ATK_OBJECT_CLASS (klass);
|
|
|
|
gobject_class->dispose = st_widget_accessible_dispose;
|
|
|
|
atk_class->ref_state_set = st_widget_accessible_ref_state_set;
|
|
atk_class->initialize = st_widget_accessible_initialize;
|
|
atk_class->get_role = st_widget_accessible_get_role;
|
|
atk_class->get_name = st_widget_accessible_get_name;
|
|
|
|
g_type_class_add_private (gobject_class, sizeof (StWidgetAccessiblePrivate));
|
|
}
|
|
|
|
static void
|
|
st_widget_accessible_init (StWidgetAccessible *self)
|
|
{
|
|
StWidgetAccessiblePrivate *priv = ST_WIDGET_ACCESSIBLE_GET_PRIVATE (self);
|
|
|
|
self->priv = priv;
|
|
}
|
|
|
|
static void
|
|
st_widget_accessible_dispose (GObject *gobject)
|
|
{
|
|
StWidgetAccessible *self = ST_WIDGET_ACCESSIBLE (gobject);
|
|
|
|
if (self->priv->current_label)
|
|
{
|
|
g_object_unref (self->priv->current_label);
|
|
self->priv->current_label = NULL;
|
|
}
|
|
|
|
G_OBJECT_CLASS (st_widget_accessible_parent_class)->dispose (gobject);
|
|
}
|
|
|
|
static void
|
|
on_accessible_name_notify (GObject *gobject,
|
|
GParamSpec *pspec,
|
|
AtkObject *accessible)
|
|
{
|
|
g_object_notify (G_OBJECT (accessible), "accessible-name");
|
|
}
|
|
|
|
static void
|
|
st_widget_accessible_initialize (AtkObject *obj,
|
|
gpointer data)
|
|
{
|
|
ATK_OBJECT_CLASS (st_widget_accessible_parent_class)->initialize (obj, data);
|
|
|
|
g_signal_connect (data, "notify::pseudo-class",
|
|
G_CALLBACK (on_pseudo_class_notify),
|
|
obj);
|
|
|
|
g_signal_connect (data, "notify::can-focus",
|
|
G_CALLBACK (on_can_focus_notify),
|
|
obj);
|
|
|
|
g_signal_connect (data, "notify::label-actor",
|
|
G_CALLBACK (on_label_notify),
|
|
obj);
|
|
|
|
g_signal_connect (data, "notify::accessible-name",
|
|
G_CALLBACK (on_accessible_name_notify),
|
|
obj);
|
|
|
|
/* Check the cached selected state and notify the first selection.
|
|
* Ie: it is required to ensure a first notification when Alt+Tab
|
|
* popup appears
|
|
*/
|
|
check_pseudo_class (ST_WIDGET_ACCESSIBLE (obj), ST_WIDGET (data));
|
|
check_labels (ST_WIDGET_ACCESSIBLE (obj), ST_WIDGET (data));
|
|
}
|
|
|
|
static AtkStateSet *
|
|
st_widget_accessible_ref_state_set (AtkObject *obj)
|
|
{
|
|
AtkStateSet *result = NULL;
|
|
AtkStateSet *aux_set = NULL;
|
|
ClutterActor *actor = NULL;
|
|
StWidget *widget = NULL;
|
|
StWidgetAccessible *self = NULL;
|
|
|
|
result = ATK_OBJECT_CLASS (st_widget_accessible_parent_class)->ref_state_set (obj);
|
|
|
|
actor = CLUTTER_ACTOR (atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (obj)));
|
|
|
|
if (actor == NULL) /* State is defunct */
|
|
return result;
|
|
|
|
widget = ST_WIDGET (actor);
|
|
self = ST_WIDGET_ACCESSIBLE (obj);
|
|
|
|
/* priv->selected should be properly updated on the
|
|
* ATK_STATE_SELECTED notification callbacks
|
|
*/
|
|
if (self->priv->selected)
|
|
atk_state_set_add_state (result, ATK_STATE_SELECTED);
|
|
|
|
if (self->priv->checked)
|
|
atk_state_set_add_state (result, ATK_STATE_CHECKED);
|
|
|
|
/* On clutter there isn't any tip to know if a actor is focusable or
|
|
* not, anyone can receive the key_focus. For this reason
|
|
* cally_actor sets any actor as FOCUSABLE. This is not the case on
|
|
* St, where we have can_focus. But this means that we need to
|
|
* remove the state FOCUSABLE if it is not focusable
|
|
*/
|
|
if (st_widget_get_can_focus (widget))
|
|
atk_state_set_add_state (result, ATK_STATE_FOCUSABLE);
|
|
else
|
|
atk_state_set_remove_state (result, ATK_STATE_FOCUSABLE);
|
|
|
|
/* We add the states added externally if required */
|
|
if (!atk_state_set_is_empty (widget->priv->local_state_set))
|
|
{
|
|
aux_set = atk_state_set_or_sets (result, widget->priv->local_state_set);
|
|
|
|
g_object_unref (result); /* previous result will not be used */
|
|
result = aux_set;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static AtkRole
|
|
st_widget_accessible_get_role (AtkObject *obj)
|
|
{
|
|
StWidget *widget = NULL;
|
|
|
|
g_return_val_if_fail (ST_IS_WIDGET_ACCESSIBLE (obj), ATK_ROLE_INVALID);
|
|
|
|
widget = ST_WIDGET (atk_gobject_accessible_get_object (ATK_GOBJECT_ACCESSIBLE (obj)));
|
|
|
|
if (widget == NULL)
|
|
return ATK_ROLE_INVALID;
|
|
|
|
if (widget->priv->accessible_role != ATK_ROLE_INVALID)
|
|
return widget->priv->accessible_role;
|
|
|
|
return ATK_OBJECT_CLASS (st_widget_accessible_parent_class)->get_role (obj);
|
|
}
|
|
|
|
static void
|
|
on_pseudo_class_notify (GObject *gobject,
|
|
GParamSpec *pspec,
|
|
gpointer data)
|
|
{
|
|
check_pseudo_class (ST_WIDGET_ACCESSIBLE (data),
|
|
ST_WIDGET (gobject));
|
|
}
|
|
|
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/*
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* In some cases the only way to check some states are checking the
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* pseudo-class. Like if the object is selected (see bug 637830) or if
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* the object is toggled. This method also notifies a state change if
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* the value is different to the one cached.
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*
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* We also assume that if the object uses that pseudo-class, it makes
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* sense to notify that state change. It would be possible to refine
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* that behaviour checking the role (ie: notify CHECKED changes only
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* for CHECK_BUTTON roles).
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*
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* In a ideal world we would have a more standard way to get the
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* state, like the widget-context (as in the case of
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* gtktreeview-cells), or something like the property "can-focus". But
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* for the moment this is enough, and we can update that in the future
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* if required.
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*/
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static void
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check_pseudo_class (StWidgetAccessible *self,
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StWidget *widget)
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{
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gboolean found = FALSE;
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found = st_widget_has_style_pseudo_class (widget,
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"selected");
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if (found != self->priv->selected)
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{
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self->priv->selected = found;
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atk_object_notify_state_change (ATK_OBJECT (self),
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ATK_STATE_SELECTED,
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found);
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}
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found = st_widget_has_style_pseudo_class (widget,
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"checked");
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if (found != self->priv->checked)
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{
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self->priv->checked = found;
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atk_object_notify_state_change (ATK_OBJECT (self),
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ATK_STATE_CHECKED,
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found);
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}
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}
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static void
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on_can_focus_notify (GObject *gobject,
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GParamSpec *pspec,
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gpointer data)
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{
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gboolean can_focus = st_widget_get_can_focus (ST_WIDGET (gobject));
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atk_object_notify_state_change (ATK_OBJECT (data),
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ATK_STATE_FOCUSABLE, can_focus);
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}
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static void
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on_label_notify (GObject *gobject,
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GParamSpec *pspec,
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gpointer data)
|
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{
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check_labels (ST_WIDGET_ACCESSIBLE (data), ST_WIDGET (gobject));
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}
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static void
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check_labels (StWidgetAccessible *widget_accessible,
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StWidget *widget)
|
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{
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ClutterActor *label = NULL;
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AtkObject *label_accessible = NULL;
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|
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/* We only call this method at startup, and when the label changes,
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* so it is fine to remove the previous relationships if we have the
|
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* current_label by default
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*/
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if (widget_accessible->priv->current_label != NULL)
|
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{
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AtkObject *previous_label = widget_accessible->priv->current_label;
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atk_object_remove_relationship (ATK_OBJECT (widget_accessible),
|
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ATK_RELATION_LABELLED_BY,
|
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previous_label);
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atk_object_remove_relationship (previous_label,
|
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ATK_RELATION_LABEL_FOR,
|
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ATK_OBJECT (widget_accessible));
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|
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g_object_unref (previous_label);
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}
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label = st_widget_get_label_actor (widget);
|
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if (label == NULL)
|
|
{
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widget_accessible->priv->current_label = NULL;
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}
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else
|
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{
|
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label_accessible = clutter_actor_get_accessible (label);
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widget_accessible->priv->current_label = g_object_ref (label_accessible);
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atk_object_add_relationship (ATK_OBJECT (widget_accessible),
|
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ATK_RELATION_LABELLED_BY,
|
|
label_accessible);
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|
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atk_object_add_relationship (label_accessible,
|
|
ATK_RELATION_LABEL_FOR,
|
|
ATK_OBJECT (widget_accessible));
|
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}
|
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}
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|
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/**
|
|
* st_widget_get_focus_chain:
|
|
* @widget: An #StWidget
|
|
*
|
|
* Gets a list of the focusable children of @widget, in "Tab"
|
|
* order. By default, this returns all visible
|
|
* (as in CLUTTER_ACTOR_IS_VISIBLE()) children of @widget.
|
|
*
|
|
* Returns: (element-type Clutter.Actor) (transfer container):
|
|
* @widget's focusable children
|
|
*/
|
|
GList *
|
|
st_widget_get_focus_chain (StWidget *widget)
|
|
{
|
|
return ST_WIDGET_GET_CLASS (widget)->get_focus_chain (widget);
|
|
}
|
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|
|
/**
|
|
* st_widget_clear_background_image:
|
|
* @widget: An #StWidget
|
|
*
|
|
* Force a reload of the background-image property. Usually properties
|
|
* are cached heavily to avoid unnecessary work on paint, this method
|
|
* will force the cache to be recreated.
|
|
*/
|
|
void
|
|
st_widget_clear_background_image (StWidget *actor)
|
|
{
|
|
GFile *file;
|
|
const char *path;
|
|
char *uri;
|
|
|
|
if (actor->priv->theme_node == NULL)
|
|
return;
|
|
|
|
path = st_theme_node_get_background_image (actor->priv->theme_node);
|
|
if (path == NULL)
|
|
return;
|
|
|
|
file = g_file_new_for_path (path);
|
|
uri = g_file_get_uri (file);
|
|
|
|
st_texture_cache_clear_uri (st_texture_cache_get_default (), uri);
|
|
st_theme_node_invalidate_paint_state (actor->priv->theme_node);
|
|
|
|
if (CLUTTER_ACTOR_IS_MAPPED (CLUTTER_ACTOR (actor)))
|
|
clutter_actor_queue_redraw (CLUTTER_ACTOR (actor));
|
|
|
|
g_object_unref (file);
|
|
g_free (uri);
|
|
}
|