/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */ /* pdfdocument.h: Implementation of EvDocument for PDF * Copyright (C) 2004, Red Hat, Inc. * * This program 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, or (at your option) * any later version. * * This program 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include #include "pdf-document.h" #include "ev-ps-exporter.h" #include "ev-document-find.h" #include "ev-document-misc.h" #include "ev-document-links.h" #include "ev-document-security.h" #include "ev-document-thumbnails.h" #include #include #include #include #include #include #include #include #include #include "Thumb.h" #include "GDKSplashOutputDev.h" enum { PROP_0, PROP_TITLE }; typedef struct { PdfDocument *document; gunichar *ucs4; glong ucs4_len; guint idle; /* full results are only possible for the rendered current page */ int current_page; GArray *current_page_results; int *other_page_flags; /* length n_pages + 1, first element ignored */ int start_page; /* skip this one as we iterate, since we did it first */ int search_page; /* the page we're searching now */ TextOutputDev *output_dev; } PdfDocumentSearch; typedef struct _PdfDocumentClass PdfDocumentClass; #define PDF_DOCUMENT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), PDF_TYPE_DOCUMENT, PdfDocumentClass)) #define PDF_IS_DOCUMENT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), PDF_TYPE_DOCUMENT)) #define PDF_DOCUMENT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), PDF_TYPE_DOCUMENT, PdfDocumentClass)) struct _PdfDocumentClass { GObjectClass parent_class; }; struct _PdfDocument { GObject parent_instance; int page; int page_x_offset; int page_y_offset; double scale; GdkDrawable *target; GDKSplashOutputDev *out; PSOutputDev *ps_out; PDFDoc *doc; Links *links; UnicodeMap *umap; gchar *password; PdfDocumentSearch *search; }; static EvLink *build_link_from_action (PdfDocument *pdf_document, LinkAction *link_action, const char *title); static void pdf_document_document_links_iface_init (EvDocumentLinksIface *iface); static void pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface); static void pdf_document_document_iface_init (EvDocumentIface *iface); static void pdf_document_ps_exporter_iface_init (EvPSExporterIface *iface); static void pdf_document_find_iface_init (EvDocumentFindIface *iface); static void pdf_document_security_iface_init (EvDocumentSecurityIface *iface); static void pdf_document_search_free (PdfDocumentSearch *search); static void pdf_document_search_page_changed (PdfDocumentSearch *search); static GdkPixbuf *bitmap_to_pixbuf (SplashBitmap *bitmap, GdkPixbuf *target, gint x_offset, gint y_offset); G_DEFINE_TYPE_WITH_CODE (PdfDocument, pdf_document, G_TYPE_OBJECT, { G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT, pdf_document_document_iface_init); G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS, pdf_document_document_links_iface_init); G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS, pdf_document_document_thumbnails_iface_init); G_IMPLEMENT_INTERFACE (EV_TYPE_PS_EXPORTER, pdf_document_ps_exporter_iface_init); G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND, pdf_document_find_iface_init); G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_SECURITY, pdf_document_security_iface_init); }); static void document_init_links (PdfDocument *pdf_document) { Page *page; Object obj; if (pdf_document->links) { delete pdf_document->links; } page = pdf_document->doc->getCatalog ()->getPage (pdf_document->page); pdf_document->links = new Links (page->getAnnots (&obj), pdf_document->doc->getCatalog ()->getBaseURI ()); obj.free (); } static void document_display_page (PdfDocument *pdf_document) { if (pdf_document->out != NULL) { pdf_document->doc->displayPage (pdf_document->out, pdf_document->page, 72 * pdf_document->scale, 72 * pdf_document->scale, 0, gTrue, gTrue); document_init_links (pdf_document); /* Update the search results available to the app since * we only provide full results on the current page */ if (pdf_document->search) pdf_document_search_page_changed (pdf_document->search); } } static gboolean pdf_document_load (EvDocument *document, const char *uri, GError **error) { PdfDocument *pdf_document = PDF_DOCUMENT (document); PDFDoc *newDoc; int err; char *filename; GooString *filename_g; GooString *enc; if (!globalParams) { globalParams = new GlobalParams("/etc/xpdfrc"); globalParams->setupBaseFontsFc(NULL); } if (! pdf_document->umap) { enc = new GooString("UTF-8"); pdf_document->umap = globalParams->getUnicodeMap(enc); pdf_document->umap->incRefCnt (); delete enc; } filename = g_filename_from_uri (uri, NULL, error); if (!filename) return FALSE; filename_g = new GooString (filename); g_free (filename); // open the PDF file, assumes ownership of filename_g GooString *password = NULL; if (pdf_document->password) password = new GooString (pdf_document->password); newDoc = new PDFDoc(filename_g, password, password); if (password) delete password; if (!newDoc->isOk()) { err = newDoc->getErrorCode(); delete newDoc; if (err == errEncrypted) { g_set_error (error, EV_DOCUMENT_ERROR, EV_DOCUMENT_ERROR_ENCRYPTED, "Document is encrypted."); } else { g_set_error (error, G_FILE_ERROR, G_FILE_ERROR_FAILED, "Failed to load document (error %d) '%s'\n", err, uri); } return FALSE; } if (pdf_document->doc) delete pdf_document->doc; pdf_document->doc = newDoc; pdf_document->page = 1; if (pdf_document->out) pdf_document->out->startDoc(pdf_document->doc->getXRef()); g_object_notify (G_OBJECT (pdf_document), "title"); return TRUE; } static gboolean pdf_document_save (EvDocument *document, const char *uri, GError **error) { PdfDocument *pdf_document = PDF_DOCUMENT (document); char *filename; gboolean retval = FALSE; filename = g_filename_from_uri (uri, NULL, error); if (filename != NULL) { GooString *fname = new GooString (filename); retval = pdf_document->doc->saveAs (fname); } return retval; } static int pdf_document_get_n_pages (EvDocument *document) { PdfDocument *pdf_document = PDF_DOCUMENT (document); if (pdf_document->doc) return pdf_document->doc->getNumPages(); else return 1; } static void pdf_document_set_page (EvDocument *document, int page) { PdfDocument *pdf_document = PDF_DOCUMENT (document); page = CLAMP (page, 1, pdf_document_get_n_pages (document)); if (page != pdf_document->page) { pdf_document->page = page; document_display_page (pdf_document); ev_document_page_changed (EV_DOCUMENT (pdf_document)); } } static int pdf_document_get_page (EvDocument *document) { PdfDocument *pdf_document = PDF_DOCUMENT (document); return pdf_document->page; } static void redraw_callback (void *data) { /* Need to hook up through a EvDocument callback? */ } static void pdf_document_set_target (EvDocument *document, GdkDrawable *target) { PdfDocument *pdf_document = PDF_DOCUMENT (document); if (pdf_document->target != target) { if (pdf_document->target) g_object_unref (pdf_document->target); pdf_document->target = target; if (pdf_document->target) g_object_ref (pdf_document->target); if (pdf_document->out) { delete pdf_document->out; pdf_document->out = NULL; } if (pdf_document->target) { pdf_document->out = new GDKSplashOutputDev (gdk_drawable_get_screen (pdf_document->target), redraw_callback, (void*) document); if (pdf_document->doc) pdf_document->out->startDoc(pdf_document->doc->getXRef()); document_display_page (pdf_document); } } } static void pdf_document_set_scale (EvDocument *document, double scale) { PdfDocument *pdf_document = PDF_DOCUMENT (document); if (pdf_document->scale != scale) { pdf_document->scale = scale; document_display_page (pdf_document); ev_document_scale_changed (EV_DOCUMENT (pdf_document)); } } static void pdf_document_set_page_offset (EvDocument *document, int x, int y) { PdfDocument *pdf_document = PDF_DOCUMENT (document); pdf_document->page_x_offset = x; pdf_document->page_y_offset = y; } static gint canonical_multiple_of_90 (gint n) { while (n >= 360) { n -= 360; } while (n < 0) { n += 360; } return 90 * (gint)((n / 90.0) + .5); } static void pdf_document_get_page_size (EvDocument *document, int page, int *width, int *height) { PdfDocument *pdf_document = PDF_DOCUMENT (document); Page *doc_page; int page_width = 1, page_height = 1; double scale = pdf_document->scale; if (page == -1) page = pdf_document->page; doc_page = pdf_document->doc->getCatalog ()->getPage (page); if (page) { int page_rotate; page_rotate = canonical_multiple_of_90 (doc_page->getRotate ()); if (page_rotate == 90 || page_rotate == 270) { page_width = (int) ((doc_page->getHeight () * scale) + 0.5); page_height = (int) ((doc_page->getWidth () * scale) + 0.5); } else /* if (page_rotate == 0 || page_rotate == 180) */ { page_width = (int) ((doc_page->getWidth () * scale) + 0.5); page_height = (int) ((doc_page->getHeight () * scale) + 0.5); } } if (width) *width = page_width; if (height) *height = page_height; } static void pdf_document_render (EvDocument *document, int clip_x, int clip_y, int clip_width, int clip_height) { PdfDocument *pdf_document = PDF_DOCUMENT (document); GdkRectangle page; GdkRectangle draw; if (!pdf_document->target) return; page.x = pdf_document->page_x_offset; page.y = pdf_document->page_y_offset; page.width = pdf_document->out->getBitmapWidth(); page.height = pdf_document->out->getBitmapHeight(); draw.x = clip_x; draw.y = clip_y; draw.width = clip_width; draw.height = clip_height; if (gdk_rectangle_intersect (&page, &draw, &draw)) pdf_document->out->redraw (draw.x - page.x, draw.y - page.y, pdf_document->target, draw.x, draw.y, draw.width, draw.height); } static GdkPixbuf * pdf_document_render_pixbuf (EvDocument *document) { PdfDocument *pdf_document = PDF_DOCUMENT (document); SplashOutputDev *output; GdkPixbuf *pixbuf; SplashColor color; color.rgb8 = splashMakeRGB8 (255, 255, 255); output = new SplashOutputDev (splashModeRGB8, gFalse, color); output->startDoc (pdf_document->doc->getXRef()); pdf_document->doc->displayPage (output, pdf_document->page, 72*pdf_document->scale, 72*pdf_document->scale, 0, gTrue, gFalse); pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, 8, output->getBitmap()->getWidth(), output->getBitmap()->getHeight()); bitmap_to_pixbuf (output->getBitmap(), pixbuf, 0, 0); delete output; return pixbuf; } double pdf_document_find_get_progress (EvDocumentFind *document_find) { PdfDocumentSearch *search; int n_pages, pages_done; search = PDF_DOCUMENT (document_find)->search; if (search == NULL) { return 0; } n_pages = pdf_document_get_n_pages (EV_DOCUMENT (document_find)); if (search->search_page > search->start_page) { pages_done = search->search_page - search->start_page + 1; } else if (search->search_page == search->start_page) { pages_done = n_pages; } else { pages_done = n_pages - search->start_page + search->search_page; } return pages_done / (double) n_pages; } int pdf_document_find_page_has_results (EvDocumentFind *document_find, int page) { PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search; g_return_val_if_fail (search != NULL, FALSE); return search->other_page_flags[page]; } int pdf_document_find_get_n_results (EvDocumentFind *document_find) { PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search; if (search) { return search->current_page_results->len; } else { return 0; } } gboolean pdf_document_find_get_result (EvDocumentFind *document_find, int n_result, GdkRectangle *rectangle) { PdfDocument *pdf_document = PDF_DOCUMENT (document_find); PdfDocumentSearch *search = pdf_document->search; GdkRectangle r; if (search != NULL && n_result < search->current_page_results->len) { r = g_array_index (search->current_page_results, GdkRectangle, n_result); rectangle->x = r.x + pdf_document->page_x_offset; rectangle->y = r.y + pdf_document->page_y_offset; rectangle->width = r.width; rectangle->height = r.height; return TRUE; } else { return FALSE; } } static void pdf_document_search_page_changed (PdfDocumentSearch *search) { PdfDocument *pdf_document = search->document; int current_page; GdkRectangle result; int xMin, yMin, xMax, yMax; current_page = pdf_document->page; if (search->current_page == current_page) return; /* We need to create current_page_results for the new current page */ g_array_set_size (search->current_page_results, 0); if (pdf_document->out->findText (search->ucs4, search->ucs4_len, gTrue, gTrue, // startAtTop, stopAtBottom gFalse, gFalse, // startAtLast, stopAtLast &xMin, &yMin, &xMax, &yMax)) { result.x = xMin; result.y = yMin; result.width = xMax - xMin; result.height = yMax - yMin; g_array_append_val (search->current_page_results, result); /* Now find further results */ while (pdf_document->out->findText (search->ucs4, search->ucs4_len, gFalse, gTrue, gTrue, gFalse, &xMin, &yMin, &xMax, &yMax)) { result.x = xMin; result.y = yMin; result.width = xMax - xMin; result.height = yMax - yMin; g_array_append_val (search->current_page_results, result); } } } static gboolean pdf_document_search_idle_callback (void *data) { PdfDocumentSearch *search = (PdfDocumentSearch*) data; PdfDocument *pdf_document = search->document; int n_pages, changed_page; double xMin, yMin, xMax, yMax; /* Note that PDF page count is 1 through n_pages INCLUSIVE * like a real book. We are looking to add one result for each * page with a match, because the coordinates are meaningless * with TextOutputDev, so we just want to flag matching pages * and then when the user switches to the current page, we * will emit "found" again with the real results. */ n_pages = pdf_document_get_n_pages (EV_DOCUMENT (search->document)); if (search->output_dev == 0) { /* First time through here... */ search->output_dev = new TextOutputDev (NULL, gTrue, gFalse, gFalse); if (!search->output_dev->isOk()) { goto end_search; } } pdf_document->doc->displayPage (search->output_dev, search->search_page, 72, 72, 0, gTrue, gFalse); if (search->output_dev->findText (search->ucs4, search->ucs4_len, gTrue, gTrue, // startAtTop, stopAtBottom gFalse, gFalse, // startAtLast, stopAtLast &xMin, &yMin, &xMax, &yMax)) { /* This page has results */ search->other_page_flags[search->search_page] = 1; } else { search->other_page_flags[search->search_page] = 0; } changed_page = search->start_page; search->search_page += 1; if (search->search_page > n_pages) { /* wrap around */ search->search_page = 1; } if (search->search_page != search->start_page) { ev_document_find_changed (EV_DOCUMENT_FIND (pdf_document), changed_page); return TRUE; } end_search: /* We're done. */ search->idle = 0; /* will return FALSE to remove */ return FALSE; } static void pdf_document_find_begin (EvDocumentFind *document, const char *search_string, gboolean case_sensitive) { PdfDocument *pdf_document = PDF_DOCUMENT (document); PdfDocumentSearch *search; int n_pages, i; gunichar *ucs4; glong ucs4_len; /* FIXME handle case_sensitive (right now XPDF * code is always case insensitive for ASCII * and case sensitive for all other languaages) */ g_assert (sizeof (gunichar) == sizeof (Unicode)); ucs4 = g_utf8_to_ucs4_fast (search_string, -1, &ucs4_len); if (pdf_document->search && pdf_document->search->ucs4_len == ucs4_len && memcmp (pdf_document->search->ucs4, ucs4, sizeof (gunichar) * ucs4_len) == 0) { /* Search is unchanged */ g_free (ucs4); return; } if (pdf_document->search) { pdf_document_search_free (pdf_document->search); pdf_document->search = NULL; } search = g_new0 (PdfDocumentSearch, 1); search->ucs4 = ucs4; search->ucs4_len = ucs4_len; search->current_page_results = g_array_new (FALSE, FALSE, sizeof (GdkRectangle)); n_pages = pdf_document_get_n_pages (EV_DOCUMENT (document)); search->other_page_flags = g_new0 (int, n_pages + 1); for (i = 0; i <= n_pages; i++) { search->other_page_flags[i] = -1; } search->document = pdf_document; /* We add at low priority so the progress bar repaints */ search->idle = g_idle_add_full (G_PRIORITY_LOW, pdf_document_search_idle_callback, search, NULL); search->output_dev = 0; search->start_page = pdf_document->page; search->search_page = search->start_page; search->current_page = -1; pdf_document->search = search; /* Update for the current page right away */ pdf_document_search_page_changed (search); } static void pdf_document_find_cancel (EvDocumentFind *document) { PdfDocument *pdf_document = PDF_DOCUMENT (document); if (pdf_document->search) { pdf_document_search_free (pdf_document->search); pdf_document->search = NULL; } } static void pdf_document_search_free (PdfDocumentSearch *search) { if (search->idle != 0) g_source_remove (search->idle); if (search->output_dev) delete search->output_dev; g_array_free (search->current_page_results, TRUE); g_free (search->other_page_flags); g_free (search->ucs4); g_free (search); } static gboolean pdf_document_has_document_security (EvDocumentSecurity *document_security) { /* FIXME: do we really need to have this? */ return FALSE; } static void pdf_document_set_password (EvDocumentSecurity *document_security, const char *password) { PdfDocument *document = PDF_DOCUMENT (document_security); if (document->password) g_free (document->password); document->password = g_strdup (password); } static void pdf_document_ps_export_begin (EvPSExporter *exporter, const char *filename) { PdfDocument *document = PDF_DOCUMENT (exporter); if (document->ps_out) delete document->ps_out; document->ps_out = new PSOutputDev ((char *)filename, document->doc->getXRef(), document->doc->getCatalog(), 1, pdf_document_get_n_pages (EV_DOCUMENT (document)), psModePS); } static void pdf_document_ps_export_do_page (EvPSExporter *exporter, int page) { PdfDocument *document = PDF_DOCUMENT (exporter); document->doc->displayPage (document->ps_out, page, 72.0, 72.0, 0, gTrue, gFalse); } static void pdf_document_ps_export_end (EvPSExporter *exporter) { PdfDocument *document = PDF_DOCUMENT (exporter); delete document->ps_out; document->ps_out = NULL; } /* EvDocumentLinks Implementation */ typedef struct { GooList *items; int index; int level; } LinksIter; static gchar * unicode_to_char (OutlineItem *outline_item, UnicodeMap *uMap) { GooString gstr; gchar buf[8]; /* 8 is enough for mapping an unicode char to a string */ int i, n; for (i = 0; i < outline_item->getTitleLength(); ++i) { n = uMap->mapUnicode(outline_item->getTitle()[i], buf, sizeof(buf)); gstr.append(buf, n); } return g_strdup (gstr.getCString ()); } static gboolean pdf_document_links_has_document_links (EvDocumentLinks *document_links) { PdfDocument *pdf_document = PDF_DOCUMENT (document_links); Outline *outline; g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), FALSE); outline = pdf_document->doc->getOutline(); if (outline->getItems() != NULL && outline->getItems()->getLength() > 0) return TRUE; return FALSE; } static void build_tree (PdfDocument *pdf_document, GtkTreeModel *model, GtkTreeIter *parent, GooList *items) { int i; for (i = 0; i < items->getLength (); i++) { OutlineItem *item; GtkTreeIter iter; LinkAction *link_action; gchar *title; EvLink *link; item = (OutlineItem *)items->get (i); gtk_tree_store_append (GTK_TREE_STORE (model), &iter, parent); link_action = item->getAction (); title = unicode_to_char (item, pdf_document->umap); link = build_link_from_action (pdf_document, link_action, title); gtk_tree_store_set (GTK_TREE_STORE (model), &iter, EV_DOCUMENT_LINKS_COLUMN_MARKUP, title, EV_DOCUMENT_LINKS_COLUMN_LINK, link, -1); item->open (); if (item->hasKids () && item->getKids ()) { build_tree (pdf_document, model, &iter, item->getKids ()); } } } static GtkTreeModel * pdf_document_links_get_links_model (EvDocumentLinks *document_links) { PdfDocument *pdf_document = PDF_DOCUMENT (document_links); GtkTreeModel *model = NULL; Outline *outline; GooList *items; g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), NULL); outline = pdf_document->doc->getOutline(); items = outline->getItems(); /* Create the model iff we have items*/ if (items != NULL) { model = (GtkTreeModel *) gtk_tree_store_new (EV_DOCUMENT_LINKS_COLUMN_NUM_COLUMNS, G_TYPE_STRING, G_TYPE_POINTER); build_tree (pdf_document, model, NULL, items); } return model; } static EvLink * build_link_from_action (PdfDocument *pdf_document, LinkAction *link_action, const char *title) { EvLink *link = NULL; if (link_action == NULL) { link = ev_link_new_title (title); } else if (link_action->getKind () == actionGoToR) { g_warning ("actionGoToR links not implemented"); } else if (link_action->getKind () == actionLaunch) { g_warning ("actionLaunch links not implemented"); } else if (link_action->getKind () == actionNamed) { g_warning ("actionNamed links not implemented"); } else if (link_action->getKind () == actionMovie) { g_warning ("actionMovie links not implemented"); } else if (link_action->getKind () == actionGoTo) { LinkDest *link_dest; LinkGoTo *link_goto; Ref page_ref; gint page_num = 0; GooString *named_dest; link_goto = dynamic_cast (link_action); link_dest = link_goto->getDest (); named_dest = link_goto->getNamedDest (); /* Wow! This seems excessively slow on large * documents. I need to investigate more... -jrb */ if (link_dest != NULL) { link_dest = link_dest->copy (); } else if (named_dest != NULL) { named_dest = named_dest->copy (); link_dest = pdf_document->doc->findDest (named_dest); delete named_dest; } if (link_dest != NULL) { if (link_dest->isPageRef ()) { page_ref = link_dest->getPageRef (); page_num = pdf_document->doc->findPage (page_ref.num, page_ref.gen); } else { page_num = link_dest->getPageNum (); } delete link_dest; } link = ev_link_new_page (title, page_num); } else if (link_action->getKind () == actionURI) { LinkURI *link_uri; link_uri = dynamic_cast (link_action); link = ev_link_new_external (title, link_uri->getURI()->getCString()); } else if (link_action->getKind () == actionUnknown) { LinkUnknown *link_unknown; link_unknown = dynamic_cast (link_action); g_warning ("Unknown link type %s", link_unknown->getAction()->getCString()); } if (link == NULL) { link = ev_link_new_title (title); } return link; } #if 0 static EvDocumentLinksIter * pdf_document_links_begin_read (EvDocumentLinks *document_links) { PdfDocument *pdf_document = PDF_DOCUMENT (document_links); Outline *outline; LinksIter *iter; GooList *items; g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), NULL); outline = pdf_document->doc->getOutline(); items = outline->getItems(); if (! items) return NULL; iter = g_new0 (LinksIter, 1); iter->items = items; iter->index = 0; iter->level = 0; return (EvDocumentLinksIter *) iter; } /* FIXME This returns a new object every time, probably we should cache it in the iter */ static EvLink * pdf_document_links_get_link (EvDocumentLinks *document_links, EvDocumentLinksIter *links_iter) { PdfDocument *pdf_document = PDF_DOCUMENT (document_links); LinksIter *iter = (LinksIter *)links_iter; OutlineItem *anItem; LinkAction *link_action; Unicode *link_title; const char *title; g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), FALSE); g_return_val_if_fail (iter != NULL, FALSE); anItem = (OutlineItem *)iter->items->get(iter->index); link_action = anItem->getAction (); link_title = anItem->getTitle (); title = unicode_to_char (anItem, pdf_document->umap); return build_link_from_action (pdf_document, link_action, title); } static EvDocumentLinksIter * pdf_document_links_get_child (EvDocumentLinks *document_links, EvDocumentLinksIter *links_iter) { LinksIter *iter = (LinksIter *)links_iter; LinksIter *child_iter; OutlineItem *anItem; g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), FALSE); anItem = (OutlineItem *)iter->items->get(iter->index); anItem->open (); if (! (anItem->hasKids() && anItem->getKids()) ) return NULL; child_iter = g_new0 (LinksIter, 1); child_iter->index = 0; child_iter->level = iter->level + 1; child_iter->items = anItem->getKids (); g_assert (child_iter->items); return (EvDocumentLinksIter *) child_iter; } static gboolean pdf_document_links_next (EvDocumentLinks *document_links, EvDocumentLinksIter *links_iter) { LinksIter *iter = (LinksIter *) links_iter; g_return_val_if_fail (PDF_IS_DOCUMENT (document_links), FALSE); iter->index++; if (iter->index >= iter->items->getLength()) return FALSE; return TRUE; } static void pdf_document_links_free_iter (EvDocumentLinks *document_links, EvDocumentLinksIter *iter) { g_return_if_fail (PDF_IS_DOCUMENT (document_links)); g_return_if_fail (iter != NULL); /* FIXME: Should I close all the nodes?? Free them? */ g_free (iter); } #endif static void pdf_document_finalize (GObject *object) { PdfDocument *pdf_document = PDF_DOCUMENT (object); if (pdf_document->links) { delete pdf_document->links; } if (pdf_document->umap) { pdf_document->umap->decRefCnt (); pdf_document->umap = NULL; } if (pdf_document->search) pdf_document_search_free (pdf_document->search); if (pdf_document->target) g_object_unref (pdf_document->target); if (pdf_document->out) delete pdf_document->out; if (pdf_document->ps_out) delete pdf_document->ps_out; if (pdf_document->doc) delete pdf_document->doc; } static void pdf_document_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { switch (prop_id) { case PROP_TITLE: /* read only */ break; } } static gboolean has_unicode_marker (GooString *string) { return ((string->getChar (0) & 0xff) == 0xfe && (string->getChar (1) & 0xff) == 0xff); } static gchar * pdf_info_dict_get_string (Dict *info_dict, const gchar *key) { Object obj; GooString *value; gchar *result; g_return_val_if_fail (info_dict != NULL, NULL); g_return_val_if_fail (key != NULL, NULL); if (!info_dict->lookup ((gchar *)key, &obj)->isString ()) { obj.free (); return NULL; } value = obj.getString (); if (has_unicode_marker (value)) { result = g_convert (value->getCString () + 2, value->getLength () - 2, "UTF-8", "UTF-16BE", NULL, NULL, NULL); } else { result = g_strndup (value->getCString (), value->getLength ()); } obj.free (); return result; } static char * pdf_document_get_title (PdfDocument *pdf_document) { char *title = NULL; Object info; if (pdf_document->doc == NULL) return NULL; pdf_document->doc->getDocInfo (&info); if (info.isDict ()) { title = pdf_info_dict_get_string (info.getDict(), "Title"); } return title; } static char * pdf_document_get_text (EvDocument *document, GdkRectangle *rect) { PdfDocument *pdf_document = PDF_DOCUMENT (document); GooString *sel_text = new GooString; const char *text; int x1, y1, x2, y2; x1 = rect->x - pdf_document->page_x_offset; y1 = rect->y - pdf_document->page_y_offset; x2 = x1 + rect->width; y2 = y1 + rect->height; sel_text = pdf_document->out->getText (x1, y1, x2, y2); text = sel_text->getCString (); return text ? g_strdup (text) : NULL; } static EvLink * pdf_document_get_link (EvDocument *document, int x, int y) { PdfDocument *pdf_document = PDF_DOCUMENT (document); LinkAction *action; double link_x, link_y; if (pdf_document->links == NULL) { return NULL; } /* Offset */ link_x = x - pdf_document->page_x_offset; link_y = y - pdf_document->page_y_offset; /* Inverse y */ link_y = pdf_document->out->getBitmapHeight() - link_y; /* Zoom */ link_x = link_x / pdf_document->scale; link_y = link_y / pdf_document->scale; action = pdf_document->links->find (link_x, link_y); if (action) { return build_link_from_action (pdf_document, action, ""); } else { return NULL; } } static void pdf_document_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { PdfDocument *pdf_document = PDF_DOCUMENT (object); char *title; switch (prop_id) { case PROP_TITLE: title = pdf_document_get_title (pdf_document); g_value_set_string (value, title); g_free (title); break; } } static void pdf_document_class_init (PdfDocumentClass *klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); gobject_class->finalize = pdf_document_finalize; gobject_class->get_property = pdf_document_get_property; gobject_class->set_property = pdf_document_set_property; g_object_class_override_property (gobject_class, PROP_TITLE, "title"); } static void pdf_document_document_iface_init (EvDocumentIface *iface) { iface->load = pdf_document_load; iface->save = pdf_document_save; iface->get_text = pdf_document_get_text; iface->get_link = pdf_document_get_link; iface->get_n_pages = pdf_document_get_n_pages; iface->set_page = pdf_document_set_page; iface->get_page = pdf_document_get_page; iface->set_scale = pdf_document_set_scale; iface->set_target = pdf_document_set_target; iface->set_page_offset = pdf_document_set_page_offset; iface->get_page_size = pdf_document_get_page_size; iface->render = pdf_document_render; iface->render_pixbuf = pdf_document_render_pixbuf; } static void pdf_document_ps_exporter_iface_init (EvPSExporterIface *iface) { iface->begin = pdf_document_ps_export_begin; iface->do_page = pdf_document_ps_export_do_page; iface->end = pdf_document_ps_export_end; } static void pdf_document_find_iface_init (EvDocumentFindIface *iface) { iface->begin = pdf_document_find_begin; iface->get_n_results = pdf_document_find_get_n_results; iface->get_result = pdf_document_find_get_result; iface->page_has_results = pdf_document_find_page_has_results; iface->get_progress = pdf_document_find_get_progress; iface->cancel = pdf_document_find_cancel; } static void pdf_document_security_iface_init (EvDocumentSecurityIface *iface) { iface->has_document_security = pdf_document_has_document_security; iface->set_password = pdf_document_set_password; } static void pdf_document_document_links_iface_init (EvDocumentLinksIface *iface) { iface->has_document_links = pdf_document_links_has_document_links; iface->get_links_model = pdf_document_links_get_links_model; } /* Thumbnails */ static GdkPixbuf * bitmap_to_pixbuf (SplashBitmap *bitmap, GdkPixbuf *target, gint x_offset, gint y_offset) { gint width; gint height; SplashColorPtr dataPtr; int x, y; gboolean target_has_alpha; gint target_rowstride; guchar *target_data; width = bitmap->getWidth (); height = bitmap->getHeight (); if (width + x_offset > gdk_pixbuf_get_width (target)) width = gdk_pixbuf_get_width (target) - x_offset; if (height + y_offset > gdk_pixbuf_get_height (target)) height = gdk_pixbuf_get_height (target) - x_offset; target_has_alpha = gdk_pixbuf_get_has_alpha (target); target_rowstride = gdk_pixbuf_get_rowstride (target); target_data = gdk_pixbuf_get_pixels (target); dataPtr = bitmap->getDataPtr (); for (y = 0; y < height; y++) { SplashRGB8 *p; SplashRGB8 rgb; guchar *q; p = dataPtr.rgb8 + y * width; q = target_data + ((y + y_offset) * target_rowstride + x_offset * (target_has_alpha?4:3)); for (x = 0; x < width; x++) { rgb = *p++; *q++ = splashRGB8R (rgb); *q++ = splashRGB8G (rgb); *q++ = splashRGB8B (rgb); if (target_has_alpha) q++; } } return target; } static GdkPixbuf * pdf_document_thumbnails_get_page_pixbuf (PdfDocument *pdf_document, gdouble scale_factor, gint page_num, gint width, gint height, gboolean border) { SplashOutputDev *output; GdkPixbuf *pixbuf; SplashColor color; color.rgb8 = splashMakeRGB8 (255, 255, 255); output = new SplashOutputDev (splashModeRGB8, gFalse, color); output->startDoc (pdf_document->doc->getXRef()); pdf_document->doc->displayPage (output, page_num + 1, 72*scale_factor, 72*scale_factor, 0, gTrue, gFalse); width = output->getBitmap()->getWidth(); height = output->getBitmap()->getHeight(); if (border) { pixbuf = ev_document_misc_get_thumbnail_frame (width, height, NULL); bitmap_to_pixbuf (output->getBitmap(), pixbuf, 1, 1); } else { pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, width, height); gdk_pixbuf_fill (pixbuf, 0xffffffff); bitmap_to_pixbuf (output->getBitmap(), pixbuf, 0, 0); } delete output; return pixbuf; } static void pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnails, gint page, gint size, gint *width, gint *height) { PdfDocument *pdf_document = PDF_DOCUMENT (document_thumbnails); Page *the_page; Object the_thumb; Thumb *thumb = NULL; the_page = pdf_document->doc->getCatalog ()->getPage (page + 1); the_page->getThumb (&the_thumb); if (!(the_thumb.isNull () || the_thumb.isNone())) { /* Build the thumbnail object */ thumb = new Thumb(pdf_document->doc->getXRef (), &the_thumb); *width = thumb->getWidth (); *height = thumb->getHeight (); } else { double page_width, page_height; page_width = the_page->getWidth (); page_height = the_page->getHeight (); if (page_width > page_height) { *width = size; *height = (int) (size * page_height / page_width); } else { *width = (int) (size * page_width / page_height); *height = size; } } } static GdkPixbuf * pdf_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document_thumbnails, gint page, gint size, gboolean border) { PdfDocument *pdf_document = PDF_DOCUMENT (document_thumbnails); GdkPixbuf *thumbnail; Page *the_page; Object the_thumb; Thumb *thumb = NULL; gboolean have_ethumbs = FALSE; the_page = pdf_document->doc->getCatalog ()->getPage (page + 1); the_page->getThumb(&the_thumb); if (!(the_thumb.isNull () || the_thumb.isNone())) { /* Build the thumbnail object */ thumb = new Thumb(pdf_document->doc->getXRef (), &the_thumb); have_ethumbs = thumb->ok(); } if (have_ethumbs) { guchar *data; GdkPixbuf *tmp_pixbuf; data = thumb->getPixbufData(); tmp_pixbuf = gdk_pixbuf_new_from_data (data, GDK_COLORSPACE_RGB, FALSE, 8, thumb->getWidth (), thumb->getHeight (), thumb->getWidth () * 3, NULL, NULL); /* FIXME: do we want to check that the thumb's size isn't ridiculous?? */ thumbnail = ev_document_misc_get_thumbnail_frame (-1, -1, tmp_pixbuf); g_object_unref (tmp_pixbuf); } else { int width, height; double scale_factor; pdf_document_thumbnails_get_dimensions (document_thumbnails, page, size, &width, &height); scale_factor = width / the_page->getWidth (); thumbnail = pdf_document_thumbnails_get_page_pixbuf (pdf_document, scale_factor, page, width, height, border); } return thumbnail; } static void pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface) { iface->get_thumbnail = pdf_document_thumbnails_get_thumbnail; iface->get_dimensions = pdf_document_thumbnails_get_dimensions; } static void pdf_document_init (PdfDocument *pdf_document) { pdf_document->page = 1; pdf_document->page_x_offset = 0; pdf_document->page_y_offset = 0; pdf_document->scale = 1.; pdf_document->password = NULL; }