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8cd939fa58
Add a EvDocumentInfoExtended, and add ev_document_info_new() for use by backends.
1214 lines
32 KiB
C
1214 lines
32 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
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/*
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* Copyright (C) 2009 Carlos Garcia Campos
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* Copyright (C) 2004 Marco Pesenti Gritti
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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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*/
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#include "config.h"
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#include <stdlib.h>
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#include <string.h>
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#include "ev-document.h"
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#include "ev-document-misc.h"
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#include "synctex_parser.h"
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enum {
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PROP_0,
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PROP_MODIFIED
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};
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typedef struct _EvPageSize
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{
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gdouble width;
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gdouble height;
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} EvPageSize;
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struct _EvDocumentPrivate
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{
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gchar *uri;
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guint64 file_size;
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gboolean cache_loaded;
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gint n_pages;
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gboolean modified;
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gboolean uniform;
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gdouble uniform_width;
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gdouble uniform_height;
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gdouble max_width;
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gdouble max_height;
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gdouble min_width;
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gdouble min_height;
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gint max_label;
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gchar **page_labels;
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EvPageSize *page_sizes;
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EvDocumentInfo *info;
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synctex_scanner_p synctex_scanner;
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};
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static guint64 _ev_document_get_size_gfile (GFile *file);
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static guint64 _ev_document_get_size (const char *uri);
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static gint _ev_document_get_n_pages (EvDocument *document);
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static void _ev_document_get_page_size (EvDocument *document,
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EvPage *page,
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double *width,
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double *height);
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static gchar *_ev_document_get_page_label (EvDocument *document,
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EvPage *page);
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static EvDocumentInfo *_ev_document_get_info (EvDocument *document);
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static gboolean _ev_document_support_synctex (EvDocument *document);
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static GMutex ev_doc_mutex;
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static GMutex ev_fc_mutex;
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G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE (EvDocument, ev_document, G_TYPE_OBJECT)
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GQuark
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ev_document_error_quark (void)
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{
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static GQuark q = 0;
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if (q == 0)
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q = g_quark_from_static_string ("ev-document-error-quark");
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return q;
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}
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static EvPage *
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ev_document_impl_get_page (EvDocument *document,
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gint index)
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{
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return ev_page_new (index);
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}
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static EvDocumentInfo *
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ev_document_impl_get_info (EvDocument *document)
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{
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return ev_document_info_new ();
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}
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static void
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ev_document_finalize (GObject *object)
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{
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EvDocument *document = EV_DOCUMENT (object);
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if (document->priv->uri) {
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g_free (document->priv->uri);
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document->priv->uri = NULL;
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}
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if (document->priv->page_sizes) {
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g_free (document->priv->page_sizes);
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document->priv->page_sizes = NULL;
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}
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g_clear_pointer (&document->priv->page_labels, g_strfreev);
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if (document->priv->info) {
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ev_document_info_free (document->priv->info);
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document->priv->info = NULL;
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}
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if (document->priv->synctex_scanner) {
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synctex_scanner_free (document->priv->synctex_scanner);
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document->priv->synctex_scanner = NULL;
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}
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G_OBJECT_CLASS (ev_document_parent_class)->finalize (object);
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}
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static void
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ev_document_set_property (GObject *object,
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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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switch (prop_id) {
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case PROP_MODIFIED:
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ev_document_set_modified (EV_DOCUMENT (object),
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g_value_get_boolean (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, 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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ev_document_get_property (GObject *object,
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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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EvDocument *document = EV_DOCUMENT (object);
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switch (prop_id) {
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case PROP_MODIFIED:
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g_value_set_boolean (value, document->priv->modified);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, 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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ev_document_init (EvDocument *document)
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{
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document->priv = ev_document_get_instance_private (document);
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/* Assume all pages are the same size until proven otherwise */
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document->priv->uniform = TRUE;
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}
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static void
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ev_document_class_init (EvDocumentClass *klass)
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{
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GObjectClass *g_object_class = G_OBJECT_CLASS (klass);
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klass->get_page = ev_document_impl_get_page;
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klass->get_info = ev_document_impl_get_info;
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klass->get_backend_info = NULL;
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g_object_class->get_property = ev_document_get_property;
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g_object_class->set_property = ev_document_set_property;
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g_object_class->finalize = ev_document_finalize;
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g_object_class_install_property (g_object_class,
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PROP_MODIFIED,
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g_param_spec_boolean ("modified",
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"Is modified",
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"Whether the document has been modified",
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FALSE,
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G_PARAM_READWRITE |
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G_PARAM_STATIC_STRINGS));
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}
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/**
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* ev_document_get_modified:
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* @document: an #EvDocument
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*
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* Returns: %TRUE iff the document has been modified.
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*
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* You can monitor changes to the modification state by connecting to the
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* notify::modified signal on @document.
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*
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* Since: 3.28
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*/
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gboolean
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ev_document_get_modified (EvDocument *document)
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{
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g_return_val_if_fail (EV_IS_DOCUMENT (document), FALSE);
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return document->priv->modified;
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}
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/**
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* ev_document_set_modified:
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* @document: an #EvDocument
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* @modified: a boolean value to set the document as modified or not.
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*
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* Set the @document modification state as @modified.
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*
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* Since: 3.28
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*/
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void
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ev_document_set_modified (EvDocument *document,
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gboolean modified)
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{
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g_return_if_fail (EV_IS_DOCUMENT (document));
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if (document->priv->modified != modified) {
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document->priv->modified = modified;
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g_object_notify (G_OBJECT (document), "modified");
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}
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}
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void
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ev_document_doc_mutex_lock (void)
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{
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g_mutex_lock (&ev_doc_mutex);
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}
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void
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ev_document_doc_mutex_unlock (void)
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{
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g_mutex_unlock (&ev_doc_mutex);
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}
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gboolean
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ev_document_doc_mutex_trylock (void)
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{
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return g_mutex_trylock (&ev_doc_mutex);
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}
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void
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ev_document_fc_mutex_lock (void)
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{
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g_mutex_lock (&ev_fc_mutex);
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}
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void
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ev_document_fc_mutex_unlock (void)
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{
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g_mutex_unlock (&ev_fc_mutex);
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}
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gboolean
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ev_document_fc_mutex_trylock (void)
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{
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return g_mutex_trylock (&ev_fc_mutex);
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}
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static void
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ev_document_setup_cache (EvDocument *document)
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{
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EvDocumentPrivate *priv = document->priv;
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gboolean custom_page_labels = FALSE;
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gint i;
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/* Cache some info about the document to avoid
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* going to the backends since it requires locks
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*/
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priv->cache_loaded = TRUE;
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for (i = 0; i < priv->n_pages; i++) {
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EvPage *page = ev_document_get_page (document, i);
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gdouble page_width = 0;
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gdouble page_height = 0;
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EvPageSize *page_size;
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gchar *page_label;
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_ev_document_get_page_size (document, page, &page_width, &page_height);
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if (i == 0) {
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priv->uniform_width = page_width;
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priv->uniform_height = page_height;
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priv->max_width = priv->uniform_width;
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priv->max_height = priv->uniform_height;
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priv->min_width = priv->uniform_width;
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priv->min_height = priv->uniform_height;
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} else if (priv->uniform &&
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(priv->uniform_width != page_width ||
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priv->uniform_height != page_height)) {
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/* It's a different page size. Backfill the array. */
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int j;
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priv->page_sizes = g_new0 (EvPageSize, priv->n_pages);
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for (j = 0; j < i; j++) {
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page_size = &(priv->page_sizes[j]);
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page_size->width = priv->uniform_width;
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page_size->height = priv->uniform_height;
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}
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priv->uniform = FALSE;
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}
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if (!priv->uniform) {
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page_size = &(priv->page_sizes[i]);
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page_size->width = page_width;
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page_size->height = page_height;
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if (page_width > priv->max_width)
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priv->max_width = page_width;
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if (page_width < priv->min_width)
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priv->min_width = page_width;
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if (page_height > priv->max_height)
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priv->max_height = page_height;
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if (page_height < priv->min_height)
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priv->min_height = page_height;
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}
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page_label = _ev_document_get_page_label (document, page);
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if (page_label) {
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if (!priv->page_labels)
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priv->page_labels = g_new0 (gchar *, priv->n_pages + 1);
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if (!custom_page_labels) {
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gchar *real_page_label;
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real_page_label = g_strdup_printf ("%d", i + 1);
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custom_page_labels = g_strcmp0 (real_page_label, page_label) != 0;
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g_free (real_page_label);
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}
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priv->page_labels[i] = page_label;
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priv->max_label = MAX (priv->max_label,
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g_utf8_strlen (page_label, 256));
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}
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g_object_unref (page);
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}
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if (!custom_page_labels)
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g_clear_pointer (&priv->page_labels, g_strfreev);
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}
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static void
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ev_document_initialize_synctex (EvDocument *document,
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const gchar *uri)
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{
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EvDocumentPrivate *priv = document->priv;
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if (_ev_document_support_synctex (document)) {
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gchar *filename;
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filename = g_filename_from_uri (uri, NULL, NULL);
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if (filename != NULL) {
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priv->synctex_scanner =
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synctex_scanner_new_with_output_file (filename, NULL, 1);
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g_free (filename);
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}
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}
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}
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/**
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* ev_document_load_full:
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* @document: a #EvDocument
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* @uri: the document's URI
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* @flags: flags from #EvDocumentLoadFlags
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* @error: a #GError location to store an error, or %NULL
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*
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* Loads @document from @uri.
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*
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* On failure, %FALSE is returned and @error is filled in.
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* If the document is encrypted, EV_DEFINE_ERROR_ENCRYPTED is returned.
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* If the backend cannot load the specific document, EV_DOCUMENT_ERROR_INVALID
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* is returned. Other errors are possible too, depending on the backend
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* used to load the document and the URI, e.g. #GIOError, #GFileError, and
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* #GConvertError.
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*
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* Returns: %TRUE on success, or %FALSE on failure.
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*/
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gboolean
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ev_document_load_full (EvDocument *document,
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const char *uri,
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EvDocumentLoadFlags flags,
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GError **error)
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{
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EvDocumentClass *klass = EV_DOCUMENT_GET_CLASS (document);
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gboolean retval;
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GError *err = NULL;
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retval = klass->load (document, uri, &err);
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if (!retval) {
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if (err) {
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g_propagate_error (error, err);
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} else {
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g_warning ("%s::EvDocument::load returned FALSE but did not fill in @error; fix the backend!\n",
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G_OBJECT_TYPE_NAME (document));
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/* So upper layers don't crash */
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g_set_error_literal (error,
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EV_DOCUMENT_ERROR,
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EV_DOCUMENT_ERROR_INVALID,
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"Internal error in backend");
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}
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} else {
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document->priv->info = _ev_document_get_info (document);
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document->priv->n_pages = _ev_document_get_n_pages (document);
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if (!(flags & EV_DOCUMENT_LOAD_FLAG_NO_CACHE))
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ev_document_setup_cache (document);
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document->priv->uri = g_strdup (uri);
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document->priv->file_size = _ev_document_get_size (uri);
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ev_document_initialize_synctex (document, uri);
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}
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return retval;
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}
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/**
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* ev_document_load:
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* @document: a #EvDocument
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* @uri: the document's URI
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* @error: a #GError location to store an error, or %NULL
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*
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* Loads @document from @uri.
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*
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* On failure, %FALSE is returned and @error is filled in.
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* If the document is encrypted, EV_DEFINE_ERROR_ENCRYPTED is returned.
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* If the backend cannot load the specific document, EV_DOCUMENT_ERROR_INVALID
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* is returned. If the backend does not support the format for the document's
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* contents, EV_DOCUMENT_ERROR_UNSUPPORTED_CONTENT is returned. Other errors
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* are possible too, depending on the backend used to load the document and
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* the URI, e.g. #GIOError, #GFileError, and #GConvertError.
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*
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* Returns: %TRUE on success, or %FALSE on failure.
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*/
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gboolean
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ev_document_load (EvDocument *document,
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const char *uri,
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GError **error)
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{
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return ev_document_load_full (document, uri,
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EV_DOCUMENT_LOAD_FLAG_NONE, error);
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}
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/**
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* ev_document_load_stream:
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* @document: a #EvDocument
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* @stream: a #GInputStream
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* @flags: flags from #EvDocumentLoadFlags
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* @cancellable: (allow-none): a #GCancellable, or %NULL
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* @error: (allow-none): a #GError location to store an error, or %NULL
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*
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* Synchronously loads the document from @stream.
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* See ev_document_load() for more information.
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*
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* Returns: %TRUE if loading succeeded, or %FALSE on error with @error filled in
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*
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* Since: 3.6
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*/
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gboolean
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ev_document_load_stream (EvDocument *document,
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GInputStream *stream,
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EvDocumentLoadFlags flags,
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GCancellable *cancellable,
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GError **error)
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{
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EvDocumentClass *klass;
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g_return_val_if_fail (EV_IS_DOCUMENT (document), FALSE);
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g_return_val_if_fail (G_IS_INPUT_STREAM (stream), FALSE);
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g_return_val_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable), FALSE);
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g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
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klass = EV_DOCUMENT_GET_CLASS (document);
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if (!klass->load_stream) {
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g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
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"Backend does not support loading from stream");
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return FALSE;
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}
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if (!klass->load_stream (document, stream, flags, cancellable, error))
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return FALSE;
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document->priv->info = _ev_document_get_info (document);
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document->priv->n_pages = _ev_document_get_n_pages (document);
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if (!(flags & EV_DOCUMENT_LOAD_FLAG_NO_CACHE))
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ev_document_setup_cache (document);
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return TRUE;
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}
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/**
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* ev_document_load_gfile:
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* @document: a #EvDocument
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* @file: a #GFile
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* @flags: flags from #EvDocumentLoadFlags
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* @cancellable: (allow-none): a #GCancellable, or %NULL
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* @error: (allow-none): a #GError location to store an error, or %NULL
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*
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* Synchronously loads the document from @file.
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* See ev_document_load() for more information.
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*
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* Returns: %TRUE if loading succeeded, or %FALSE on error with @error filled in
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*
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* Since: 3.6
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*/
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gboolean
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ev_document_load_gfile (EvDocument *document,
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GFile *file,
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EvDocumentLoadFlags flags,
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GCancellable *cancellable,
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GError **error)
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{
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EvDocumentClass *klass;
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|
|
|
g_return_val_if_fail (EV_IS_DOCUMENT (document), FALSE);
|
|
g_return_val_if_fail (G_IS_FILE (file), FALSE);
|
|
g_return_val_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable), FALSE);
|
|
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
|
|
|
|
klass = EV_DOCUMENT_GET_CLASS (document);
|
|
if (!klass->load_gfile) {
|
|
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
|
|
"Backend does not support loading from GFile");
|
|
return FALSE;
|
|
}
|
|
|
|
if (!klass->load_gfile (document, file, flags, cancellable, error))
|
|
return FALSE;
|
|
|
|
document->priv->info = _ev_document_get_info (document);
|
|
document->priv->n_pages = _ev_document_get_n_pages (document);
|
|
|
|
if (!(flags & EV_DOCUMENT_LOAD_FLAG_NO_CACHE))
|
|
ev_document_setup_cache (document);
|
|
|
|
document->priv->uri = g_file_get_uri (file);
|
|
document->priv->file_size = _ev_document_get_size_gfile (file);
|
|
ev_document_initialize_synctex (document, document->priv->uri);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* ev_document_save:
|
|
* @document: a #EvDocument
|
|
* @uri: the target URI
|
|
* @error: a #GError location to store an error, or %NULL
|
|
*
|
|
* Saves @document to @uri.
|
|
*
|
|
* Returns: %TRUE on success, or %FALSE on error with @error filled in
|
|
*/
|
|
gboolean
|
|
ev_document_save (EvDocument *document,
|
|
const char *uri,
|
|
GError **error)
|
|
{
|
|
EvDocumentClass *klass = EV_DOCUMENT_GET_CLASS (document);
|
|
|
|
return klass->save (document, uri, error);
|
|
}
|
|
|
|
/**
|
|
* ev_document_get_page:
|
|
* @document: a #EvDocument
|
|
* @index: index of page
|
|
*
|
|
* Returns: (transfer full): Newly created #EvPage for the given index.
|
|
*/
|
|
EvPage *
|
|
ev_document_get_page (EvDocument *document,
|
|
gint index)
|
|
{
|
|
EvDocumentClass *klass = EV_DOCUMENT_GET_CLASS (document);
|
|
|
|
return klass->get_page (document, index);
|
|
}
|
|
|
|
static gboolean
|
|
_ev_document_support_synctex (EvDocument *document)
|
|
{
|
|
EvDocumentClass *klass = EV_DOCUMENT_GET_CLASS (document);
|
|
|
|
return klass->support_synctex ? klass->support_synctex (document) : FALSE;
|
|
}
|
|
|
|
gboolean
|
|
ev_document_has_synctex (EvDocument *document)
|
|
{
|
|
g_return_val_if_fail (EV_IS_DOCUMENT (document), FALSE);
|
|
|
|
return document->priv->synctex_scanner != NULL;
|
|
}
|
|
|
|
/**
|
|
* ev_document_synctex_backward_search:
|
|
* @document: a #EvDocument
|
|
* @page_index: the target page
|
|
* @x: X coordinate
|
|
* @y: Y coordinate
|
|
*
|
|
* Peforms a Synctex backward search to obtain the TeX input file, line and
|
|
* (possibly) column corresponding to the position (@x,@y) (in 72dpi
|
|
* coordinates) in the @page of @document.
|
|
*
|
|
* Returns: A pointer to the EvSourceLink structure that holds the result. @NULL if synctex
|
|
* is not enabled for the document or no result is found.
|
|
* The EvSourceLink pointer should be freed with g_free after it is used.
|
|
*/
|
|
EvSourceLink *
|
|
ev_document_synctex_backward_search (EvDocument *document,
|
|
gint page_index,
|
|
gfloat x,
|
|
gfloat y)
|
|
{
|
|
EvSourceLink *result = NULL;
|
|
synctex_scanner_p scanner;
|
|
|
|
g_return_val_if_fail (EV_IS_DOCUMENT (document), NULL);
|
|
|
|
scanner = document->priv->synctex_scanner;
|
|
if (!scanner)
|
|
return NULL;
|
|
|
|
if (synctex_edit_query (scanner, page_index + 1, x, y) > 0) {
|
|
synctex_node_p node;
|
|
|
|
/* We assume that a backward search returns either zero or one result_node */
|
|
node = synctex_scanner_next_result (scanner);
|
|
if (node != NULL) {
|
|
const gchar *filename;
|
|
|
|
filename = synctex_scanner_get_name (scanner, synctex_node_tag (node));
|
|
|
|
if (filename) {
|
|
result = ev_source_link_new (filename,
|
|
synctex_node_line (node),
|
|
synctex_node_column (node));
|
|
}
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* ev_document_synctex_forward_search:
|
|
* @document: a #EvDocument
|
|
* @source_link: a #EvSourceLink
|
|
*
|
|
* Peforms a Synctex forward search to obtain the area in the document
|
|
* corresponding to the position (line and column in @source_link) in
|
|
* the source Tex file.
|
|
*
|
|
* Returns: An EvMapping with the page number and area corresponding to
|
|
* the given line in the source file. It must be free with g_free when done
|
|
*/
|
|
EvMapping *
|
|
ev_document_synctex_forward_search (EvDocument *document,
|
|
EvSourceLink *link)
|
|
{
|
|
EvMapping *result = NULL;
|
|
synctex_scanner_p scanner;
|
|
|
|
g_return_val_if_fail (EV_IS_DOCUMENT (document), NULL);
|
|
|
|
scanner = document->priv->synctex_scanner;
|
|
if (!scanner)
|
|
return NULL;
|
|
|
|
/* Since 1.19, synctex_display_query has a fourth parameter,
|
|
* page-hint, which we set into a dummy number to not break the
|
|
* API. In synctex it is used to set the best results first
|
|
* given the page-hint
|
|
*/
|
|
if (synctex_display_query (scanner, link->filename, link->line, link->col, 0) > 0) {
|
|
synctex_node_p node;
|
|
gint page;
|
|
|
|
if ((node = synctex_scanner_next_result (scanner))) {
|
|
result = g_new (EvMapping, 1);
|
|
|
|
page = synctex_node_page (node) - 1;
|
|
result->data = GINT_TO_POINTER (page);
|
|
|
|
result->area.x1 = synctex_node_box_visible_h (node);
|
|
result->area.y1 = synctex_node_box_visible_v (node) -
|
|
synctex_node_box_visible_height (node);
|
|
result->area.x2 = synctex_node_box_visible_width (node) + result->area.x1;
|
|
result->area.y2 = synctex_node_box_visible_depth (node) +
|
|
synctex_node_box_visible_height (node) + result->area.y1;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static guint64
|
|
_ev_document_get_size_gfile (GFile *file)
|
|
{
|
|
goffset size = 0;
|
|
GFileInfo *info = g_file_query_info (file, G_FILE_ATTRIBUTE_STANDARD_SIZE,
|
|
G_FILE_QUERY_INFO_NONE, NULL, NULL);
|
|
if (info) {
|
|
size = g_file_info_get_size (info);
|
|
|
|
g_object_unref (info);
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
static guint64
|
|
_ev_document_get_size (const char *uri)
|
|
{
|
|
GFile *file = g_file_new_for_uri (uri);
|
|
guint64 size = _ev_document_get_size_gfile (file);
|
|
|
|
g_object_unref (file);
|
|
|
|
return size;
|
|
}
|
|
|
|
static gint
|
|
_ev_document_get_n_pages (EvDocument *document)
|
|
{
|
|
EvDocumentClass *klass = EV_DOCUMENT_GET_CLASS (document);
|
|
|
|
return klass->get_n_pages (document);
|
|
}
|
|
|
|
gint
|
|
ev_document_get_n_pages (EvDocument *document)
|
|
{
|
|
g_return_val_if_fail (EV_IS_DOCUMENT (document), 0);
|
|
|
|
return document->priv->n_pages;
|
|
}
|
|
|
|
static void
|
|
_ev_document_get_page_size (EvDocument *document,
|
|
EvPage *page,
|
|
double *width,
|
|
double *height)
|
|
{
|
|
EvDocumentClass *klass = EV_DOCUMENT_GET_CLASS (document);
|
|
|
|
klass->get_page_size (document, page, width, height);
|
|
}
|
|
|
|
/**
|
|
* ev_document_get_page_size:
|
|
* @document: a #EvDocument
|
|
* @page_index: index of page
|
|
* @width: (out) (allow-none): return location for the width of the page, or %NULL
|
|
* @height: (out) (allow-none): return location for the height of the page, or %NULL
|
|
*/
|
|
void
|
|
ev_document_get_page_size (EvDocument *document,
|
|
gint page_index,
|
|
double *width,
|
|
double *height)
|
|
{
|
|
EvDocumentPrivate *priv;
|
|
|
|
g_return_if_fail (EV_IS_DOCUMENT (document));
|
|
g_return_if_fail (page_index >= 0 || page_index < document->priv->n_pages);
|
|
|
|
priv = document->priv;
|
|
|
|
if (priv->cache_loaded) {
|
|
if (width)
|
|
*width = priv->uniform ?
|
|
priv->uniform_width :
|
|
priv->page_sizes[page_index].width;
|
|
if (height)
|
|
*height = priv->uniform ?
|
|
priv->uniform_height :
|
|
priv->page_sizes[page_index].height;
|
|
} else {
|
|
EvPage *page;
|
|
|
|
g_mutex_lock (&ev_doc_mutex);
|
|
page = ev_document_get_page (document, page_index);
|
|
_ev_document_get_page_size (document, page, width, height);
|
|
g_object_unref (page);
|
|
g_mutex_unlock (&ev_doc_mutex);
|
|
}
|
|
}
|
|
|
|
static gchar *
|
|
_ev_document_get_page_label (EvDocument *document,
|
|
EvPage *page)
|
|
{
|
|
EvDocumentClass *klass = EV_DOCUMENT_GET_CLASS (document);
|
|
|
|
return klass->get_page_label ?
|
|
klass->get_page_label (document, page) : NULL;
|
|
}
|
|
|
|
gchar *
|
|
ev_document_get_page_label (EvDocument *document,
|
|
gint page_index)
|
|
{
|
|
g_return_val_if_fail (EV_IS_DOCUMENT (document), NULL);
|
|
g_return_val_if_fail (page_index >= 0 || page_index < document->priv->n_pages, NULL);
|
|
|
|
if (!document->priv->cache_loaded) {
|
|
EvPage *page;
|
|
gchar *page_label;
|
|
|
|
g_mutex_lock (&ev_doc_mutex);
|
|
page = ev_document_get_page (document, page_index);
|
|
page_label = _ev_document_get_page_label (document, page);
|
|
g_object_unref (page);
|
|
g_mutex_unlock (&ev_doc_mutex);
|
|
|
|
return page_label ? page_label : g_strdup_printf ("%d", page_index + 1);
|
|
}
|
|
|
|
return (document->priv->page_labels && document->priv->page_labels[page_index]) ?
|
|
g_strdup (document->priv->page_labels[page_index]) :
|
|
g_strdup_printf ("%d", page_index + 1);
|
|
}
|
|
|
|
static EvDocumentInfo *
|
|
_ev_document_get_info (EvDocument *document)
|
|
{
|
|
EvDocumentClass *klass = EV_DOCUMENT_GET_CLASS (document);
|
|
|
|
return klass->get_info (document);
|
|
}
|
|
|
|
/**
|
|
* ev_document_get_info:
|
|
* @document: a #EvDocument
|
|
*
|
|
* Returns the #EvDocumentInfo for the document.
|
|
*
|
|
* Returns: (transfer none): a #EvDocumentInfo
|
|
*/
|
|
EvDocumentInfo *
|
|
ev_document_get_info (EvDocument *document)
|
|
{
|
|
g_return_val_if_fail (EV_IS_DOCUMENT (document), NULL);
|
|
|
|
return document->priv->info;
|
|
}
|
|
|
|
gboolean
|
|
ev_document_get_backend_info (EvDocument *document, EvDocumentBackendInfo *info)
|
|
{
|
|
EvDocumentClass *klass;
|
|
|
|
g_return_val_if_fail (EV_IS_DOCUMENT (document), FALSE);
|
|
|
|
klass = EV_DOCUMENT_GET_CLASS (document);
|
|
if (klass->get_backend_info == NULL)
|
|
return FALSE;
|
|
|
|
return klass->get_backend_info (document, info);
|
|
}
|
|
|
|
cairo_surface_t *
|
|
ev_document_render (EvDocument *document,
|
|
EvRenderContext *rc)
|
|
{
|
|
EvDocumentClass *klass = EV_DOCUMENT_GET_CLASS (document);
|
|
|
|
return klass->render (document, rc);
|
|
}
|
|
|
|
static GdkPixbuf *
|
|
_ev_document_get_thumbnail (EvDocument *document,
|
|
EvRenderContext *rc)
|
|
{
|
|
cairo_surface_t *surface;
|
|
GdkPixbuf *pixbuf = NULL;
|
|
|
|
surface = ev_document_render (document, rc);
|
|
if (surface != NULL) {
|
|
pixbuf = ev_document_misc_pixbuf_from_surface (surface);
|
|
cairo_surface_destroy (surface);
|
|
}
|
|
|
|
return pixbuf;
|
|
}
|
|
|
|
/**
|
|
* ev_document_get_thumbnail:
|
|
* @document: an #EvDocument
|
|
* @rc: an #EvRenderContext
|
|
*
|
|
* Returns: (transfer full): a #GdkPixbuf
|
|
*/
|
|
GdkPixbuf *
|
|
ev_document_get_thumbnail (EvDocument *document,
|
|
EvRenderContext *rc)
|
|
{
|
|
EvDocumentClass *klass = EV_DOCUMENT_GET_CLASS (document);
|
|
|
|
if (klass->get_thumbnail)
|
|
return klass->get_thumbnail (document, rc);
|
|
|
|
return _ev_document_get_thumbnail (document, rc);
|
|
}
|
|
|
|
/**
|
|
* ev_document_get_thumbnail_surface:
|
|
* @document: an #EvDocument
|
|
* @rc: an #EvRenderContext
|
|
*
|
|
* Returns: (transfer full): a #cairo_surface_t
|
|
*
|
|
* Since: 3.14
|
|
*/
|
|
cairo_surface_t *
|
|
ev_document_get_thumbnail_surface (EvDocument *document,
|
|
EvRenderContext *rc)
|
|
{
|
|
EvDocumentClass *klass = EV_DOCUMENT_GET_CLASS (document);
|
|
|
|
if (klass->get_thumbnail_surface)
|
|
return klass->get_thumbnail_surface (document, rc);
|
|
|
|
return ev_document_render (document, rc);
|
|
}
|
|
|
|
|
|
const gchar *
|
|
ev_document_get_uri (EvDocument *document)
|
|
{
|
|
g_return_val_if_fail (EV_IS_DOCUMENT (document), NULL);
|
|
|
|
return document->priv->uri;
|
|
}
|
|
|
|
const gchar *
|
|
ev_document_get_title (EvDocument *document)
|
|
{
|
|
g_return_val_if_fail (EV_IS_DOCUMENT (document), NULL);
|
|
|
|
return (document->priv->info->fields_mask & EV_DOCUMENT_INFO_TITLE) ?
|
|
document->priv->info->title : NULL;
|
|
}
|
|
|
|
gboolean
|
|
ev_document_is_page_size_uniform (EvDocument *document)
|
|
{
|
|
g_return_val_if_fail (EV_IS_DOCUMENT (document), TRUE);
|
|
|
|
if (!document->priv->cache_loaded) {
|
|
g_mutex_lock (&ev_doc_mutex);
|
|
ev_document_setup_cache (document);
|
|
g_mutex_unlock (&ev_doc_mutex);
|
|
}
|
|
|
|
return document->priv->uniform;
|
|
}
|
|
|
|
void
|
|
ev_document_get_max_page_size (EvDocument *document,
|
|
gdouble *width,
|
|
gdouble *height)
|
|
{
|
|
g_return_if_fail (EV_IS_DOCUMENT (document));
|
|
|
|
if (!document->priv->cache_loaded) {
|
|
g_mutex_lock (&ev_doc_mutex);
|
|
ev_document_setup_cache (document);
|
|
g_mutex_unlock (&ev_doc_mutex);
|
|
}
|
|
|
|
if (width)
|
|
*width = document->priv->max_width;
|
|
if (height)
|
|
*height = document->priv->max_height;
|
|
}
|
|
|
|
void
|
|
ev_document_get_min_page_size (EvDocument *document,
|
|
gdouble *width,
|
|
gdouble *height)
|
|
{
|
|
g_return_if_fail (EV_IS_DOCUMENT (document));
|
|
|
|
if (!document->priv->cache_loaded) {
|
|
g_mutex_lock (&ev_doc_mutex);
|
|
ev_document_setup_cache (document);
|
|
g_mutex_unlock (&ev_doc_mutex);
|
|
}
|
|
|
|
if (width)
|
|
*width = document->priv->min_width;
|
|
if (height)
|
|
*height = document->priv->min_height;
|
|
}
|
|
|
|
gboolean
|
|
ev_document_check_dimensions (EvDocument *document)
|
|
{
|
|
g_return_val_if_fail (EV_IS_DOCUMENT (document), FALSE);
|
|
|
|
if (!document->priv->cache_loaded) {
|
|
g_mutex_lock (&ev_doc_mutex);
|
|
ev_document_setup_cache (document);
|
|
g_mutex_unlock (&ev_doc_mutex);
|
|
}
|
|
|
|
return (document->priv->max_width > 0 && document->priv->max_height > 0);
|
|
}
|
|
|
|
guint64
|
|
ev_document_get_size (EvDocument *document)
|
|
{
|
|
g_return_val_if_fail (EV_IS_DOCUMENT (document), 0);
|
|
|
|
return document->priv->file_size;
|
|
}
|
|
|
|
gint
|
|
ev_document_get_max_label_len (EvDocument *document)
|
|
{
|
|
g_return_val_if_fail (EV_IS_DOCUMENT (document), -1);
|
|
|
|
if (!document->priv->cache_loaded) {
|
|
g_mutex_lock (&ev_doc_mutex);
|
|
ev_document_setup_cache (document);
|
|
g_mutex_unlock (&ev_doc_mutex);
|
|
}
|
|
|
|
return document->priv->max_label;
|
|
}
|
|
|
|
gboolean
|
|
ev_document_has_text_page_labels (EvDocument *document)
|
|
{
|
|
g_return_val_if_fail (EV_IS_DOCUMENT (document), FALSE);
|
|
|
|
if (!document->priv->cache_loaded) {
|
|
g_mutex_lock (&ev_doc_mutex);
|
|
ev_document_setup_cache (document);
|
|
g_mutex_unlock (&ev_doc_mutex);
|
|
}
|
|
|
|
return document->priv->page_labels != NULL;
|
|
}
|
|
|
|
gboolean
|
|
ev_document_find_page_by_label (EvDocument *document,
|
|
const gchar *page_label,
|
|
gint *page_index)
|
|
{
|
|
gint i, page;
|
|
glong value;
|
|
gchar *endptr = NULL;
|
|
EvDocumentPrivate *priv = document->priv;
|
|
|
|
g_return_val_if_fail (EV_IS_DOCUMENT (document), FALSE);
|
|
g_return_val_if_fail (page_label != NULL, FALSE);
|
|
g_return_val_if_fail (page_index != NULL, FALSE);
|
|
|
|
if (!document->priv->cache_loaded) {
|
|
g_mutex_lock (&ev_doc_mutex);
|
|
ev_document_setup_cache (document);
|
|
g_mutex_unlock (&ev_doc_mutex);
|
|
}
|
|
|
|
/* First, look for a literal label match */
|
|
for (i = 0; priv->page_labels && i < priv->n_pages; i ++) {
|
|
if (priv->page_labels[i] != NULL &&
|
|
! strcmp (page_label, priv->page_labels[i])) {
|
|
*page_index = i;
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
/* Second, look for a match with case insensitively */
|
|
for (i = 0; priv->page_labels && i < priv->n_pages; i++) {
|
|
if (priv->page_labels[i] != NULL &&
|
|
! strcasecmp (page_label, priv->page_labels[i])) {
|
|
*page_index = i;
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
/* Next, parse the label, and see if the number fits */
|
|
value = strtol (page_label, &endptr, 10);
|
|
if (endptr[0] == '\0') {
|
|
/* Page number is an integer */
|
|
page = MIN (G_MAXINT, value);
|
|
|
|
/* convert from a page label to a page offset */
|
|
page --;
|
|
if (page >= 0 && page < priv->n_pages) {
|
|
*page_index = page;
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* EvSourceLink */
|
|
G_DEFINE_BOXED_TYPE (EvSourceLink, ev_source_link, ev_source_link_copy, ev_source_link_free)
|
|
|
|
EvSourceLink *
|
|
ev_source_link_new (const gchar *filename,
|
|
gint line,
|
|
gint col)
|
|
{
|
|
EvSourceLink *link = g_slice_new (EvSourceLink);
|
|
|
|
link->filename = g_strdup (filename);
|
|
link->line = line;
|
|
link->col = col;
|
|
|
|
return link;
|
|
}
|
|
|
|
EvSourceLink *
|
|
ev_source_link_copy (EvSourceLink *link)
|
|
{
|
|
EvSourceLink *copy;
|
|
|
|
g_return_val_if_fail (link != NULL, NULL);
|
|
|
|
copy = g_slice_new (EvSourceLink);
|
|
|
|
*copy = *link;
|
|
copy->filename = g_strdup (link->filename);
|
|
|
|
return copy;
|
|
}
|
|
|
|
void
|
|
ev_source_link_free (EvSourceLink *link)
|
|
{
|
|
if (link == NULL)
|
|
return;
|
|
|
|
g_free (link->filename);
|
|
g_slice_free (EvSourceLink, link);
|
|
}
|
|
|
|
/* EvRectangle */
|
|
G_DEFINE_BOXED_TYPE (EvRectangle, ev_rectangle, ev_rectangle_copy, ev_rectangle_free)
|
|
|
|
EvRectangle *
|
|
ev_rectangle_new (void)
|
|
{
|
|
return g_new0 (EvRectangle, 1);
|
|
}
|
|
|
|
EvRectangle *
|
|
ev_rectangle_copy (EvRectangle *rectangle)
|
|
{
|
|
EvRectangle *new_rectangle;
|
|
|
|
g_return_val_if_fail (rectangle != NULL, NULL);
|
|
|
|
new_rectangle = g_new (EvRectangle, 1);
|
|
*new_rectangle = *rectangle;
|
|
|
|
return new_rectangle;
|
|
}
|
|
|
|
void
|
|
ev_rectangle_free (EvRectangle *rectangle)
|
|
{
|
|
g_free (rectangle);
|
|
}
|
|
|
|
/* Compares two rects. returns 0 if they're equal */
|
|
#define EPSILON 0.0000001
|
|
|
|
gint
|
|
ev_rect_cmp (EvRectangle *a,
|
|
EvRectangle *b)
|
|
{
|
|
if (a == b)
|
|
return 0;
|
|
if (a == NULL || b == NULL)
|
|
return 1;
|
|
|
|
return ! ((ABS (a->x1 - b->x1) < EPSILON) &&
|
|
(ABS (a->y1 - b->y1) < EPSILON) &&
|
|
(ABS (a->x2 - b->x2) < EPSILON) &&
|
|
(ABS (a->y2 - b->y2) < EPSILON));
|
|
}
|