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https://gitlab.gnome.org/GNOME/evince
synced 2024-07-04 16:48:55 +00:00
e73364886a
The g_type_class_add_private function and G_TYPE_INSTANCE_GET_PRIVATE macro are deprecated. Replace with the G_DEFINE_TYPE_PRIVATE and G_ADD_PRIVATE macros, and *_get_instance_private functions. Issue #1023
438 lines
13 KiB
C
438 lines
13 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
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/* this file is part of evince, a gnome document viewer
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*
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* Copyright (C) 2013 Carlos Garcia Campos <carlosgc@gnome.org>
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*
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* Evince is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* Evince is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <config.h>
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#include "ev-link-accessible.h"
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#include "ev-view-private.h"
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typedef struct _EvHyperlink EvHyperlink;
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typedef struct _EvHyperlinkClass EvHyperlinkClass;
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struct _EvLinkAccessiblePrivate {
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EvPageAccessible *page;
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EvLink *link;
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EvRectangle area;
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EvHyperlink *hyperlink;
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gchar *name;
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gint start_index;
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gint end_index;
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};
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struct _EvHyperlink {
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AtkHyperlink parent;
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EvLinkAccessible *link_impl;
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};
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struct _EvHyperlinkClass {
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AtkHyperlinkClass parent_class;
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};
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#define EV_TYPE_HYPERLINK (ev_hyperlink_get_type ())
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#define EV_HYPERLINK(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), EV_TYPE_HYPERLINK, EvHyperlink))
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static GType ev_hyperlink_get_type (void);
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G_DEFINE_TYPE (EvHyperlink, ev_hyperlink, ATK_TYPE_HYPERLINK)
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static gchar *
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ev_hyperlink_get_uri (AtkHyperlink *atk_hyperlink,
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gint i)
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{
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EvHyperlink *hyperlink = EV_HYPERLINK (atk_hyperlink);
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EvLinkAccessiblePrivate *impl_priv;
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EvLinkAction *action;
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if (!hyperlink->link_impl)
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return NULL;
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impl_priv = hyperlink->link_impl->priv;
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action = ev_link_get_action (impl_priv->link);
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return action ? g_strdup (ev_link_action_get_uri (action)) : NULL;
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}
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static gint
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ev_hyperlink_get_n_anchors (AtkHyperlink *atk_hyperlink)
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{
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return 1;
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}
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static gboolean
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ev_hyperlink_is_valid (AtkHyperlink *atk_hyperlink)
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{
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return TRUE;
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}
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static AtkObject *
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ev_hyperlink_get_object (AtkHyperlink *atk_hyperlink,
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gint i)
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{
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EvHyperlink *hyperlink = EV_HYPERLINK (atk_hyperlink);
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return hyperlink->link_impl ? ATK_OBJECT (hyperlink->link_impl) : NULL;
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}
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static gint
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ev_hyperlink_get_start_index (AtkHyperlink *atk_hyperlink)
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{
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EvHyperlink *hyperlink = EV_HYPERLINK (atk_hyperlink);
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EvLinkAccessiblePrivate *impl_priv;
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EvView *view;
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EvRectangle *areas = NULL;
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guint n_areas = 0;
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guint i;
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if (!hyperlink->link_impl)
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return -1;
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impl_priv = hyperlink->link_impl->priv;
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if (impl_priv->start_index != -1)
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return impl_priv->start_index;
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view = ev_page_accessible_get_view (impl_priv->page);
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if (!view->page_cache)
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return -1;
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ev_page_cache_get_text_layout (view->page_cache,
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ev_page_accessible_get_page (impl_priv->page),
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&areas, &n_areas);
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if (!areas)
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return -1;
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for (i = 0; i < n_areas; i++) {
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EvRectangle *rect = areas + i;
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gdouble c_x, c_y;
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c_x = rect->x1 + (rect->x2 - rect->x1) / 2.;
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c_y = rect->y1 + (rect->y2 - rect->y1) / 2.;
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if (c_x >= impl_priv->area.x1 && c_x <= impl_priv->area.x2 &&
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c_y >= impl_priv->area.y1 && c_y <= impl_priv->area.y2) {
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impl_priv->start_index = i;
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return i;
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}
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}
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return -1;
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}
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static gint
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ev_hyperlink_get_end_index (AtkHyperlink *atk_hyperlink)
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{
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EvHyperlink *hyperlink = EV_HYPERLINK (atk_hyperlink);
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EvLinkAccessiblePrivate *impl_priv;
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EvView *view;
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EvRectangle *areas = NULL;
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guint n_areas = 0;
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guint i;
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gint start_index;
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if (!hyperlink->link_impl)
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return -1;
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impl_priv = hyperlink->link_impl->priv;
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if (impl_priv->end_index != -1)
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return impl_priv->end_index;
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start_index = ev_hyperlink_get_start_index (atk_hyperlink);
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if (start_index == -1)
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return -1;
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view = ev_page_accessible_get_view (impl_priv->page);
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if (!view->page_cache)
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return -1;
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ev_page_cache_get_text_layout (view->page_cache,
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ev_page_accessible_get_page (impl_priv->page),
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&areas, &n_areas);
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if (!areas)
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return -1;
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for (i = start_index + 1; i < n_areas; i++) {
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EvRectangle *rect = areas + i;
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gdouble c_x, c_y;
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c_x = rect->x1 + (rect->x2 - rect->x1) / 2.;
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c_y = rect->y1 + (rect->y2 - rect->y1) / 2.;
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if (c_x < impl_priv->area.x1 || c_x > impl_priv->area.x2 ||
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c_y < impl_priv->area.y1 || c_y > impl_priv->area.y2) {
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impl_priv->end_index = i;
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return i;
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}
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}
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return -1;
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}
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static void
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ev_hyperlink_class_init (EvHyperlinkClass *klass)
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{
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AtkHyperlinkClass *atk_link_class = ATK_HYPERLINK_CLASS (klass);
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atk_link_class->get_uri = ev_hyperlink_get_uri;
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atk_link_class->get_n_anchors = ev_hyperlink_get_n_anchors;
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atk_link_class->is_valid = ev_hyperlink_is_valid;
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atk_link_class->get_object = ev_hyperlink_get_object;
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atk_link_class->get_start_index = ev_hyperlink_get_start_index;
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atk_link_class->get_end_index = ev_hyperlink_get_end_index;
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}
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static void
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ev_hyperlink_init (EvHyperlink *link)
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{
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}
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static void ev_link_accessible_hyperlink_impl_iface_init (AtkHyperlinkImplIface *iface);
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static void ev_link_accessible_action_interface_init (AtkActionIface *iface);
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static void ev_link_accessible_component_iface_init (AtkComponentIface *iface);
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G_DEFINE_TYPE_WITH_CODE (EvLinkAccessible, ev_link_accessible, ATK_TYPE_OBJECT,
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G_ADD_PRIVATE (EvLinkAccessible)
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G_IMPLEMENT_INTERFACE (ATK_TYPE_HYPERLINK_IMPL, ev_link_accessible_hyperlink_impl_iface_init)
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G_IMPLEMENT_INTERFACE (ATK_TYPE_ACTION, ev_link_accessible_action_interface_init)
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G_IMPLEMENT_INTERFACE (ATK_TYPE_COMPONENT, ev_link_accessible_component_iface_init))
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static const gchar *
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ev_link_accessible_get_name (AtkObject *atk_object)
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{
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EvLinkAccessiblePrivate *priv;
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gint start_index;
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gint end_index;
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priv = EV_LINK_ACCESSIBLE (atk_object)->priv;
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if (priv->name)
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return priv->name;
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start_index = ev_hyperlink_get_start_index (ATK_HYPERLINK (priv->hyperlink));
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end_index = ev_hyperlink_get_end_index (ATK_HYPERLINK (priv->hyperlink));
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priv->name = atk_text_get_text (ATK_TEXT (atk_object_get_parent (atk_object)), start_index, end_index);
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return priv->name;
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}
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static AtkObject *
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ev_link_accessible_get_parent (AtkObject *atk_object)
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{
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EvLinkAccessiblePrivate *priv = EV_LINK_ACCESSIBLE (atk_object)->priv;
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return ATK_OBJECT (priv->page);
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}
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static AtkStateSet *
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ev_link_accessible_ref_state_set (AtkObject *atk_object)
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{
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AtkStateSet *state_set;
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AtkStateSet *copy_set;
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AtkStateSet *page_accessible_state_set;
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EvLinkAccessible *self;
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EvViewAccessible *view_accessible;
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EvView *view;
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gint page;
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self = EV_LINK_ACCESSIBLE (atk_object);
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state_set = ATK_OBJECT_CLASS (ev_link_accessible_parent_class)->ref_state_set (atk_object);
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atk_state_set_clear_states (state_set);
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page_accessible_state_set = atk_object_ref_state_set (ATK_OBJECT (self->priv->page));
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copy_set = atk_state_set_or_sets (state_set, page_accessible_state_set);
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view_accessible = ev_page_accessible_get_view_accessible (self->priv->page);
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page = ev_page_accessible_get_page (self->priv->page);
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if (!ev_view_accessible_is_doc_rect_showing (view_accessible, page, &self->priv->area))
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atk_state_set_remove_state (copy_set, ATK_STATE_SHOWING);
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view = ev_page_accessible_get_view (self->priv->page);
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if (!view->focused_element || view->focused_element->data != self->priv->link)
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atk_state_set_remove_state (copy_set, ATK_STATE_FOCUSED);
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g_object_unref (state_set);
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g_object_unref (page_accessible_state_set);
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return copy_set;
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}
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static void
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ev_link_accessible_finalize (GObject *object)
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{
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EvLinkAccessible *link = EV_LINK_ACCESSIBLE (object);
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g_clear_object (&link->priv->hyperlink);
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g_free (link->priv->name);
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G_OBJECT_CLASS (ev_link_accessible_parent_class)->finalize (object);
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}
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static void
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ev_link_accessible_class_init (EvLinkAccessibleClass *klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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AtkObjectClass *atk_class = ATK_OBJECT_CLASS (klass);
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object_class->finalize = ev_link_accessible_finalize;
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atk_class->get_parent = ev_link_accessible_get_parent;
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atk_class->get_name = ev_link_accessible_get_name;
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atk_class->ref_state_set = ev_link_accessible_ref_state_set;
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}
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static void
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ev_link_accessible_init (EvLinkAccessible *link)
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{
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atk_object_set_role (ATK_OBJECT (link), ATK_ROLE_LINK);
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link->priv = ev_link_accessible_get_instance_private (link);
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link->priv->start_index = -1;
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link->priv->end_index = -1;
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}
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static AtkHyperlink *
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ev_link_accessible_get_hyperlink (AtkHyperlinkImpl *hyperlink_impl)
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{
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EvLinkAccessible *link = EV_LINK_ACCESSIBLE (hyperlink_impl);
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if (link->priv->hyperlink)
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return ATK_HYPERLINK (link->priv->hyperlink);
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link->priv->hyperlink = g_object_new (EV_TYPE_HYPERLINK, NULL);
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link->priv->hyperlink->link_impl = link;
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g_object_add_weak_pointer (G_OBJECT (link), (gpointer *)&link->priv->hyperlink->link_impl);
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return ATK_HYPERLINK (link->priv->hyperlink);
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}
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static void
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ev_link_accessible_hyperlink_impl_iface_init (AtkHyperlinkImplIface *iface)
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{
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iface->get_hyperlink = ev_link_accessible_get_hyperlink;
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}
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static gboolean
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ev_link_accessible_action_do_action (AtkAction *atk_action,
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gint i)
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{
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EvLinkAccessiblePrivate *priv = EV_LINK_ACCESSIBLE (atk_action)->priv;
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EvView *view;
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view = ev_page_accessible_get_view (priv->page);
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if (!ev_link_get_action (priv->link))
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return FALSE;
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ev_view_handle_link (view, priv->link);
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return TRUE;
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}
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static gint
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ev_link_accessible_action_get_n_actions (AtkAction *atk_action)
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{
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return 1;
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}
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static const gchar *
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ev_link_accessible_action_get_description (AtkAction *atk_action,
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gint i)
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{
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/* TODO */
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return NULL;
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}
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static const gchar *
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ev_link_accessible_action_get_name (AtkAction *atk_action,
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gint i)
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{
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return i == 0 ? "activate" : NULL;
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}
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static void
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ev_link_accessible_action_interface_init (AtkActionIface *iface)
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{
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iface->do_action = ev_link_accessible_action_do_action;
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iface->get_n_actions = ev_link_accessible_action_get_n_actions;
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iface->get_description = ev_link_accessible_action_get_description;
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iface->get_name = ev_link_accessible_action_get_name;
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}
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static void
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ev_link_accessible_get_extents (AtkComponent *atk_component,
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gint *x,
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gint *y,
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gint *width,
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gint *height,
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AtkCoordType coord_type)
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{
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EvLinkAccessible *self;
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EvViewAccessible *view_accessible;
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gint page;
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EvRectangle atk_rect;
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self = EV_LINK_ACCESSIBLE (atk_component);
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view_accessible = ev_page_accessible_get_view_accessible (self->priv->page);
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page = ev_page_accessible_get_page (self->priv->page);
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_transform_doc_rect_to_atk_rect (view_accessible, page, &self->priv->area, &atk_rect, coord_type);
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*x = atk_rect.x1;
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*y = atk_rect.y1;
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*width = atk_rect.x2 - atk_rect.x1;
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*height = atk_rect.y2 - atk_rect.y1;
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}
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static gboolean
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ev_link_accessible_grab_focus (AtkComponent *atk_component)
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{
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EvLinkAccessible *self;
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EvView *view;
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EvMappingList *link_mapping;
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EvMapping *mapping;
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gint page;
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self = EV_LINK_ACCESSIBLE (atk_component);
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view = ev_page_accessible_get_view (self->priv->page);
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page = ev_page_accessible_get_page (self->priv->page);
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link_mapping = ev_page_cache_get_link_mapping (view->page_cache, page);
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mapping = ev_mapping_list_find (link_mapping, self->priv->link);
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_ev_view_set_focused_element (view, mapping, page);
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return TRUE;
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}
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static void
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ev_link_accessible_component_iface_init (AtkComponentIface *iface)
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{
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iface->get_extents = ev_link_accessible_get_extents;
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iface->grab_focus = ev_link_accessible_grab_focus;
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}
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EvLinkAccessible *
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ev_link_accessible_new (EvPageAccessible *page,
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EvLink *link,
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EvRectangle *area)
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{
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EvLinkAccessible *atk_link;
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atk_link = g_object_new (EV_TYPE_LINK_ACCESSIBLE, NULL);
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atk_link->priv->page = page;
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atk_link->priv->link = g_object_ref (link);
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atk_link->priv->area = *area;
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return EV_LINK_ACCESSIBLE (atk_link);
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}
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