diff options
Diffstat (limited to 'pdf/ev-poppler.cc')
| -rw-r--r-- | pdf/ev-poppler.cc | 233 |
1 files changed, 231 insertions, 2 deletions
diff --git a/pdf/ev-poppler.cc b/pdf/ev-poppler.cc index 97c882f..e1ce95a 100644 --- a/pdf/ev-poppler.cc +++ b/pdf/ev-poppler.cc @@ -17,6 +17,8 @@ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include <math.h> +#include <string.h> #include <gtk/gtk.h> #include <poppler.h> #include <poppler-document.h> @@ -37,6 +39,15 @@ enum { }; +typedef struct { + PdfDocument *document; + char *text; + GList **pages; + guint idle; + int start_page; + int search_page; +} PdfDocumentSearch; + struct _PdfDocumentClass { GObjectClass parent_class; @@ -50,12 +61,15 @@ struct _PdfDocument PopplerPage *page; double scale; gchar *password; + + PdfDocumentSearch *search; }; static void pdf_document_document_iface_init (EvDocumentIface *iface); static void pdf_document_security_iface_init (EvDocumentSecurityIface *iface); static void pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface); static void pdf_document_document_links_iface_init (EvDocumentLinksIface *iface); +static void pdf_document_find_iface_init (EvDocumentFindIface *iface); static void pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnails, gint page, gint size, @@ -74,11 +88,11 @@ G_DEFINE_TYPE_WITH_CODE (PdfDocument, pdf_document, G_TYPE_OBJECT, pdf_document_document_thumbnails_iface_init); G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS, pdf_document_document_links_iface_init); + G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND, + pdf_document_find_iface_init); #if 0 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); #endif }); @@ -606,6 +620,221 @@ pdf_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface) iface->get_dimensions = pdf_document_thumbnails_get_dimensions; } + +static gboolean +pdf_document_search_idle_callback (void *data) +{ + PdfDocumentSearch *search = (PdfDocumentSearch*) data; + PdfDocument *pdf_document = search->document; + int n_pages, changed_page; + GList *matches; + PopplerPage *page; + + page = poppler_document_get_page (search->document->document, + search->search_page); + + g_mutex_lock (EV_DOC_MUTEX); + matches = poppler_page_find_text (page, search->text); + g_mutex_unlock (EV_DOC_MUTEX); + + search->pages[search->search_page] = matches; + n_pages = pdf_document_get_n_pages (EV_DOCUMENT (search->document)); + + changed_page = search->start_page; + + search->search_page += 1; + if (search->search_page == n_pages) { + /* wrap around */ + search->search_page = 0; + } + + if (search->search_page != search->start_page) { + ev_document_find_changed (EV_DOCUMENT_FIND (pdf_document), + changed_page); + return TRUE; + } + + /* We're done. */ + search->idle = 0; /* will return FALSE to remove */ + return FALSE; +} + + +static PdfDocumentSearch * +pdf_document_search_new (PdfDocument *pdf_document, const char *text) +{ + PdfDocumentSearch *search; + int n_pages; + int i; + + n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document)); + + search = g_new0 (PdfDocumentSearch, 1); + + search->text = g_strdup (text); + search->pages = g_new0 (GList *, n_pages); + for (i = 0; i < n_pages; i++) { + search->pages[i] = NULL; + } + + 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->start_page = pdf_document_get_page (EV_DOCUMENT (pdf_document)); + search->search_page = search->start_page; + + return search; +} + +static void +pdf_document_search_free (PdfDocumentSearch *search) +{ + PdfDocument *pdf_document = search->document; + int n_pages; + int i; + + if (search->idle != 0) + g_source_remove (search->idle); + + n_pages = pdf_document_get_n_pages (EV_DOCUMENT (pdf_document)); + for (i = 0; i < n_pages; i++) { + g_list_foreach (search->pages[i], (GFunc) g_free, NULL); + g_list_free (search->pages[i]); + } + + g_free (search->text); +} + +static void +pdf_document_find_begin (EvDocumentFind *document, + const char *search_string, + gboolean case_sensitive) +{ + PdfDocument *pdf_document = PDF_DOCUMENT (document); + + /* FIXME handle case_sensitive (right now XPDF + * code is always case insensitive for ASCII + * and case sensitive for all other languaages) + */ + + if (pdf_document->search && + strcmp (search_string, pdf_document->search->text) == 0) + return; + + if (pdf_document->search) + pdf_document_search_free (pdf_document->search); + + pdf_document->search = pdf_document_search_new (pdf_document, + search_string); +} + +int +pdf_document_find_get_n_results (EvDocumentFind *document_find) +{ + PdfDocumentSearch *search = PDF_DOCUMENT (document_find)->search; + int current_page; + + current_page = pdf_document_get_page (EV_DOCUMENT (document_find)); + + if (search) { + return g_list_length (search->pages[current_page]); + } 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; + PopplerRectangle *r; + int current_page; + double scale; + + if (search == NULL) + return FALSE; + + current_page = pdf_document_get_page (EV_DOCUMENT (pdf_document)); + r = (PopplerRectangle *) g_list_nth_data (search->pages[current_page], + n_result); + if (r == NULL) + return FALSE; + + scale = pdf_document->scale; + rectangle->x = (gint) floor (r->x1 * scale); + rectangle->y = (gint) floor (r->y1 * scale); + rectangle->width = (gint) ceil (r->x2 * scale) - rectangle->x; + rectangle->height = (gint) ceil (r->y2 * scale) - rectangle->y; + + return TRUE; +} + +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->pages[page] != NULL; +} + +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; +} + +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_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; +} + + PdfDocument * pdf_document_new (void) { |