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Diffstat (limited to 'libview/ev-image-accessible.c')
| -rw-r--r-- | libview/ev-image-accessible.c | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/libview/ev-image-accessible.c b/libview/ev-image-accessible.c new file mode 100644 index 00000000..c07e7cc9 --- /dev/null +++ b/libview/ev-image-accessible.c @@ -0,0 +1,208 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */ +/* this file is part of atril, a mate document viewer + * + * Copyright (C) 2014 Igalia + * Author: Joanmarie Diggs <[email protected]> + * + * Atril is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Atril is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +#include <config.h> + +#include "ev-image-accessible.h" +#include "ev-view-private.h" + +struct _EvImageAccessiblePrivate { + EvPageAccessible *page; + EvImage *image; + EvRectangle area; +}; + +static void ev_image_accessible_component_iface_init (AtkComponentIface *iface); +static void ev_image_accessible_image_iface_init (AtkImageIface *iface); + +G_DEFINE_TYPE_WITH_CODE (EvImageAccessible, ev_image_accessible, ATK_TYPE_OBJECT, + G_IMPLEMENT_INTERFACE (ATK_TYPE_COMPONENT, ev_image_accessible_component_iface_init) + G_IMPLEMENT_INTERFACE (ATK_TYPE_IMAGE, ev_image_accessible_image_iface_init)) + +static void +ev_image_accessible_get_atk_rect (AtkObject *atk_object, + AtkCoordType coord_type, + EvRectangle *atk_rect) +{ + EvImageAccessible *image; + EvViewAccessible *view_accessible; + gint page; + + image = EV_IMAGE_ACCESSIBLE (atk_object); + view_accessible = ev_page_accessible_get_view_accessible (image->priv->page); + page = ev_page_accessible_get_page (image->priv->page); + _transform_doc_rect_to_atk_rect (view_accessible, page, &image->priv->area, atk_rect, coord_type); +} + +static void +ev_image_accessible_get_extents (AtkComponent *atk_component, + gint *x, + gint *y, + gint *width, + gint *height, + AtkCoordType coord_type) +{ + EvRectangle atk_rect; + + ev_image_accessible_get_atk_rect (ATK_OBJECT (atk_component), coord_type, &atk_rect); + *x = atk_rect.x1; + *y = atk_rect.y1; + *width = atk_rect.x2 - atk_rect.x1; + *height = atk_rect.y2 - atk_rect.y1; +} + +static void +ev_image_accessible_component_iface_init (AtkComponentIface *iface) +{ + iface->get_extents = ev_image_accessible_get_extents; +} + +static const gchar * +ev_image_accessible_get_image_description (AtkImage *image) +{ + /* This will be obtainable for tagged PDFs */ + return NULL; +} + +static const gchar * +ev_image_accessible_get_image_locale (AtkImage *atk_image) +{ + /* This will be obtainable for tagged PDFs */ + return NULL; +} + +static void +ev_image_accessible_get_image_size (AtkImage *atk_image, + int *width, + int *height) +{ + EvRectangle atk_rect; + + ev_image_accessible_get_atk_rect (ATK_OBJECT (atk_image), ATK_XY_WINDOW, &atk_rect); + *width = atk_rect.x2 - atk_rect.x1; + *height = atk_rect.y2 - atk_rect.y1; +} + +static void +ev_image_accessible_get_image_position (AtkImage *atk_image, + gint *x, + gint *y, + AtkCoordType coord_type) +{ + EvRectangle atk_rect; + + ev_image_accessible_get_atk_rect (ATK_OBJECT (atk_image), ATK_XY_WINDOW, &atk_rect); + *x = atk_rect.x1; + *y = atk_rect.y1; +} + +static AtkStateSet * +ev_image_accessible_ref_state_set (AtkObject *atk_object) +{ + AtkStateSet *state_set; + AtkStateSet *copy_set; + AtkStateSet *page_accessible_state_set; + EvImageAccessible *self; + EvViewAccessible *view_accessible; + gint page; + + self = EV_IMAGE_ACCESSIBLE (atk_object); + state_set = ATK_OBJECT_CLASS (ev_image_accessible_parent_class)->ref_state_set (atk_object); + atk_state_set_clear_states (state_set); + + page_accessible_state_set = atk_object_ref_state_set (ATK_OBJECT (self->priv->page)); + copy_set = atk_state_set_or_sets (state_set, page_accessible_state_set); + atk_state_set_remove_state (copy_set, ATK_STATE_FOCUSABLE); + atk_state_set_remove_state (copy_set, ATK_STATE_FOCUSED); + + view_accessible = ev_page_accessible_get_view_accessible (self->priv->page); + page = ev_page_accessible_get_page (self->priv->page); + if (!ev_view_accessible_is_doc_rect_showing (view_accessible, page, &self->priv->area)) + atk_state_set_remove_state (copy_set, ATK_STATE_SHOWING); + + g_object_unref (state_set); + g_object_unref (page_accessible_state_set); + + return copy_set; +} + +static AtkObject * +ev_image_accessible_get_parent (AtkObject *atk_object) +{ + EvImageAccessiblePrivate *priv = EV_IMAGE_ACCESSIBLE (atk_object)->priv; + + return ATK_OBJECT (priv->page); +} + +static void +ev_image_accessible_finalize (GObject *object) +{ + EvImageAccessiblePrivate *priv = EV_IMAGE_ACCESSIBLE (object)->priv; + + g_object_unref (priv->image); + + G_OBJECT_CLASS (ev_image_accessible_parent_class)->finalize (object); +} + +static void +ev_image_accessible_class_init (EvImageAccessibleClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + AtkObjectClass *atk_class = ATK_OBJECT_CLASS (klass); + + object_class->finalize = ev_image_accessible_finalize; + atk_class->get_parent = ev_image_accessible_get_parent; + atk_class->ref_state_set = ev_image_accessible_ref_state_set; + + g_type_class_add_private (klass, sizeof (EvImageAccessiblePrivate)); +} + +static void +ev_image_accessible_init (EvImageAccessible *image) +{ + atk_object_set_role (ATK_OBJECT (image), ATK_ROLE_IMAGE); + + image->priv = G_TYPE_INSTANCE_GET_PRIVATE (image, EV_TYPE_IMAGE_ACCESSIBLE, EvImageAccessiblePrivate); +} + +static void +ev_image_accessible_image_iface_init (AtkImageIface *iface) +{ + iface->get_image_description = ev_image_accessible_get_image_description; + iface->get_image_locale = ev_image_accessible_get_image_locale; + iface->get_image_position = ev_image_accessible_get_image_position; + iface->get_image_size = ev_image_accessible_get_image_size; +} + +EvImageAccessible * +ev_image_accessible_new (EvPageAccessible *page, + EvImage *image, + EvRectangle *area) +{ + EvImageAccessible *atk_image; + + atk_image = g_object_new (EV_TYPE_IMAGE_ACCESSIBLE, NULL); + atk_image->priv->page = page; + atk_image->priv->image = g_object_ref (image); + atk_image->priv->area = *area; + + return EV_IMAGE_ACCESSIBLE (atk_image); +} |