X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;ds=sidebyside;f=pdf%2Fxpdf%2Fpdf-document.cc;h=b913be852a9fec45a6c80fbf32fab1520d5a5fa2;hb=a2f683fe644fded868c536909907282555b1b777;hp=6078f96297ebb81a9cd4ac6585d0a45b5b02d0e1;hpb=1e247284337090fd8f65e4c191652647d95a36ac;p=evince.git diff --git a/pdf/xpdf/pdf-document.cc b/pdf/xpdf/pdf-document.cc index 6078f962..b913be85 100644 --- a/pdf/xpdf/pdf-document.cc +++ b/pdf/xpdf/pdf-document.cc @@ -1,3 +1,4 @@ +/* -*- 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. * @@ -16,13 +17,50 @@ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include + #include "gpdf-g-switch.h" #include "pdf-document.h" +#include "ev-ps-exporter.h" +#include "ev-document-find.h" #include "gpdf-g-switch.h" +#include "ev-document-links.h" +#include "ev-document-misc.h" +#include "ev-document-security.h" +#include "ev-document-thumbnails.h" #include "GlobalParams.h" #include "GDKSplashOutputDev.h" +#include "SplashBitmap.h" #include "PDFDoc.h" +#include "Outline.h" +#include "ErrorCodes.h" +#include "UnicodeMap.h" +#include "GlobalParams.h" +#include "GfxState.h" +#include "Thumb.h" +#include "goo/GList.h" +#include "PSOutputDev.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; @@ -40,20 +78,88 @@ struct _PdfDocument GObject parent_instance; int page; - GdkRectangle page_rect; + 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; + gboolean page_valid; + + PdfDocumentSearch *search; }; -static void pdf_document_document_iface_init (EvDocumentIface *iface); +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); + 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, + 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 gboolean +document_validate_page (PdfDocument *pdf_document) +{ + if (!pdf_document->page_valid) { + 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); + + pdf_document->page_valid = TRUE; + + ev_document_changed (EV_DOCUMENT (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); + } + + return pdf_document->page_valid; +} static gboolean pdf_document_load (EvDocument *document, @@ -65,10 +171,18 @@ pdf_document_load (EvDocument *document, int err; char *filename; GString *filename_g; - + GString *enc; + if (!globalParams) { globalParams = new GlobalParams("/etc/xpdfrc"); - globalParams->setupBaseFonts(NULL); + globalParams->setupBaseFontsFc(NULL); + } + + if (! pdf_document->umap) { + enc = new GString("UTF-8"); + pdf_document->umap = globalParams->getUnicodeMap(enc); + pdf_document->umap->incRefCnt (); + delete enc; } filename = g_filename_from_uri (uri, NULL, error); @@ -78,22 +192,29 @@ pdf_document_load (EvDocument *document, filename_g = new GString (filename); g_free (filename); - // open the PDF file - newDoc = new PDFDoc(filename_g, 0, 0); + // open the PDF file, assumes ownership of filename_g + GString *password = NULL; + if (pdf_document->password) + password = new GString (pdf_document->password); + newDoc = new PDFDoc(filename_g, password, password); + if (password) + delete password; - delete filename_g; - 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); + } - /* FIXME: Add a real error enum to EvDocument */ - g_set_error (error, G_FILE_ERROR, - G_FILE_ERROR_FAILED, - "Failed to load document (error %d) '%s'\n", - err, - uri); - return FALSE; } @@ -101,14 +222,37 @@ pdf_document_load (EvDocument *document, delete pdf_document->doc; pdf_document->doc = newDoc; - if (pdf_document->out) { + pdf_document->page = 1; + + if (pdf_document->out) pdf_document->out->startDoc(pdf_document->doc->getXRef()); - pdf_document->doc->displayPage (pdf_document->out, 1, 72, 72, 0, gTrue, gTrue); - } - + + pdf_document->page_valid = FALSE; + + 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) { + GString *fname = new GString (filename); + + retval = pdf_document->doc->saveAs (fname); + } + + return retval; +} + static int pdf_document_get_n_pages (EvDocument *document) { @@ -126,7 +270,20 @@ pdf_document_set_page (EvDocument *document, { PdfDocument *pdf_document = PDF_DOCUMENT (document); - pdf_document->page = page; + page = CLAMP (page, 1, ev_document_get_n_pages (document)); + + if (page != pdf_document->page) { + pdf_document->page = page; + pdf_document->page_valid = FALSE; + } +} + +static int +pdf_document_get_page (EvDocument *document) +{ + PdfDocument *pdf_document = PDF_DOCUMENT (document); + + return pdf_document->page; } static void @@ -140,44 +297,75 @@ 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) + 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) { + if (pdf_document->doc) pdf_document->out->startDoc(pdf_document->doc->getXRef()); - pdf_document->doc->displayPage (pdf_document->out, 1, 72, 72, 0, gTrue, gTrue); - } + } + + pdf_document->page_valid = FALSE; } } static void -pdf_document_set_page_rect (EvDocument *document, - int x, - int y, - int width, - int height) +pdf_document_set_scale (EvDocument *document, + double scale) { PdfDocument *pdf_document = PDF_DOCUMENT (document); - - pdf_document->page_rect.x = x; - pdf_document->page_rect.y = y; - pdf_document->page_rect.width = width; - pdf_document->page_rect.height = height; + + if (pdf_document->scale != scale) { + pdf_document->scale = scale; + pdf_document->page_valid = FALSE; + } +} + +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 void +pdf_document_get_page_size (EvDocument *document, + int *width, + int *height) +{ + PdfDocument *pdf_document = PDF_DOCUMENT (document); + + if (document_validate_page (pdf_document)) { + if (width) + *width = pdf_document->out->getBitmapWidth(); + if (height) + *height = pdf_document->out->getBitmapHeight(); + } else { + if (width) + *width = 1; + if (height) + *height = 1; + } } static void @@ -191,11 +379,11 @@ pdf_document_render (EvDocument *document, GdkRectangle page; GdkRectangle draw; - if (!pdf_document->target) + if (!document_validate_page (pdf_document) || !pdf_document->target) return; - - page.x = 0; - page.y = 0; + + 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(); @@ -203,50 +391,954 @@ pdf_document_render (EvDocument *document, 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, draw.y, + pdf_document->out->redraw (draw.x - page.x, draw.y - page.y, pdf_document->target, draw.x, draw.y, draw.width, draw.height); } +double +pdf_document_find_get_progress (EvDocumentFind *document_find) +{ + PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search; + int n_pages, pages_done; + + n_pages = ev_document_get_n_pages (EV_DOCUMENT (document_find)); + if (search->search_page > search->start_page) { + pages_done = search->search_page - search->start_page; + } 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) { + 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 (!pdf_document->page_valid) { + /* we can't do anything until displayPage() */ + search->current_page = -1; + return; + } + + 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 = ev_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 = ev_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, + ev_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 +{ + /* goo GList, not glib */ + GList *items; + int index; + int level; +} LinksIter; + +static gchar * +unicode_to_char (OutlineItem *outline_item, + UnicodeMap *uMap) +{ + GString 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 EvDocumentLinksIter * +pdf_document_links_begin_read (EvDocumentLinks *document_links) +{ + PdfDocument *pdf_document = PDF_DOCUMENT (document_links); + Outline *outline; + LinksIter *iter; + GList *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; +} + +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 () == actionGoTo) { + LinkDest *link_dest; + LinkGoTo *link_goto; + Ref page_ref; + gint page_num = 0; + GString *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 () == actionNamed) { + /*Skip, for now */ + } + + return link; +} + +/* 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); +} + 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 (GString *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; + GString *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); + GString *sel_text = new GString; + 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 + pdf_document->page_x_offset; + y2 = y1 + rect->height + pdf_document->page_y_offset; + + 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_rect = pdf_document_set_page_rect; + iface->set_page_offset = pdf_document_set_page_offset; + iface->get_page_size = pdf_document_get_page_size; iface->render = pdf_document_render; } static void -pdf_document_init (PdfDocument *document) +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->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->begin_read = pdf_document_links_begin_read; + iface->get_link = pdf_document_links_get_link; + iface->get_child = pdf_document_links_get_child; + iface->next = pdf_document_links_next; + iface->free_iter = pdf_document_links_free_iter; +} + +/* 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) +{ + 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); + + pixbuf = ev_document_misc_get_thumbnail_frame (output->getBitmap()->getWidth(), + output->getBitmap()->getHeight(), + NULL); + bitmap_to_pixbuf (output->getBitmap(), pixbuf, 1, 1); + delete output; + + return pixbuf; +} + +static void +pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnails, + gint page, + gint suggested_width, + gint *width, + gint *height) +{ + PdfDocument *pdf_document = PDF_DOCUMENT (document_thumbnails); + Page *the_page; + Object the_thumb; + Thumb *thumb = NULL; + gdouble page_ratio; + + /* getPage seems to want page + 1 for some reason; */ + 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 { + page_ratio = the_page->getHeight () / the_page->getWidth (); + *width = suggested_width; + *height = (gint) (suggested_width * page_ratio); + } +} + +static GdkPixbuf * +pdf_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document_thumbnails, + gint page, + gint width) +{ + PdfDocument *pdf_document = PDF_DOCUMENT (document_thumbnails); + GdkPixbuf *thumbnail; + Page *the_page; + Object the_thumb; + Thumb *thumb = NULL; + gboolean have_ethumbs = FALSE; + gdouble page_ratio; + gint dest_height; + + /* getPage seems to want page + 1 for some reason; */ + the_page = pdf_document->doc->getCatalog ()->getPage (page + 1); + the_page->getThumb(&the_thumb); + + page_ratio = the_page->getHeight () / the_page->getWidth (); + dest_height = (gint) (width * page_ratio); + + + 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 { + gdouble scale_factor; + + scale_factor = (gdouble)width / the_page->getWidth (); + + thumbnail = pdf_document_thumbnails_get_page_pixbuf (pdf_document, + scale_factor, + page, + width, + dest_height); + } + + 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->page_valid = FALSE; + pdf_document->password = NULL; }