X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;ds=sidebyside;f=backend%2Fdjvu%2Fdjvu-document.c;h=daf09a5c5b0b2482408508e8cce155ba7c453e92;hb=06df42be42b1ca5f337ab0f2cae0aaeb16acf48a;hp=a8f04254d8fd8374f1c5190b260622ea744cde3b;hpb=217797d63b2d3b1c9a7a0511af1bbf3d99f0d482;p=evince.git diff --git a/backend/djvu/djvu-document.c b/backend/djvu/djvu-document.c index a8f04254..daf09a5c 100644 --- a/backend/djvu/djvu-document.c +++ b/backend/djvu/djvu-document.c @@ -17,8 +17,11 @@ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include "config.h" + +#include #include "djvu-document.h" -#include "djvu-text.h" +#include "djvu-text-page.h" #include "djvu-links.h" #include "djvu-document-private.h" #include "ev-document-thumbnails.h" @@ -26,10 +29,12 @@ #include "ev-document-misc.h" #include "ev-document-find.h" #include "ev-document-links.h" +#include "ev-selection.h" +#include "ev-file-helpers.h" -#include -#include -#include +#include +#include +#include #include #define SCALE_FACTOR 0.2 @@ -51,20 +56,63 @@ static void djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIf static void djvu_document_file_exporter_iface_init (EvFileExporterIface *iface); static void djvu_document_find_iface_init (EvDocumentFindIface *iface); static void djvu_document_document_links_iface_init (EvDocumentLinksIface *iface); +static void djvu_selection_iface_init (EvSelectionIface *iface); -G_DEFINE_TYPE_WITH_CODE - (DjvuDocument, djvu_document, G_TYPE_OBJECT, +EV_BACKEND_REGISTER_WITH_CODE (DjvuDocument, djvu_document, { - G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT, djvu_document_document_iface_init); - G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS, djvu_document_document_thumbnails_iface_init); - G_IMPLEMENT_INTERFACE (EV_TYPE_FILE_EXPORTER, djvu_document_file_exporter_iface_init); - G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND, djvu_document_find_iface_init); - G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS, djvu_document_document_links_iface_init); + EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS, djvu_document_document_thumbnails_iface_init); + EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_FILE_EXPORTER, djvu_document_file_exporter_iface_init); + EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_FIND, djvu_document_find_iface_init); + EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_LINKS, djvu_document_document_links_iface_init); + EV_BACKEND_IMPLEMENT_INTERFACE (EV_TYPE_SELECTION, djvu_selection_iface_init); }); -void -djvu_handle_events (DjvuDocument *djvu_document, int wait) +#define EV_DJVU_ERROR ev_djvu_error_quark () + +static GQuark +ev_djvu_error_quark (void) +{ + static GQuark q = 0; + if (q == 0) + q = g_quark_from_string ("ev-djvu-quark"); + + return q; +} + +static void +handle_message (const ddjvu_message_t *msg, GError **error) +{ + switch (msg->m_any.tag) { + case DDJVU_ERROR: { + gchar *error_str; + + if (msg->m_error.filename) { + error_str = g_strdup_printf ("DjvuLibre error: %s:%d", + msg->m_error.filename, + msg->m_error.lineno); + } else { + error_str = g_strdup_printf ("DjvuLibre error: %s", + msg->m_error.message); + } + + if (error) { + g_set_error_literal (error, EV_DJVU_ERROR, 0, error_str); + } else { + g_warning ("%s", error_str); + } + + g_free (error_str); + return; + } + break; + default: + break; + } +} + +void +djvu_handle_events (DjvuDocument *djvu_document, int wait, GError **error) { ddjvu_context_t *ctx = djvu_document->d_context; const ddjvu_message_t *msg; @@ -73,25 +121,33 @@ djvu_handle_events (DjvuDocument *djvu_document, int wait) return; if (wait) - msg = ddjvu_message_wait (ctx); + ddjvu_message_wait (ctx); while ((msg = ddjvu_message_peek (ctx))) { - switch (msg->m_any.tag) { - case DDJVU_ERROR: - g_warning ("DjvuLibre error: %s", - msg->m_error.message); - if (msg->m_error.filename) - g_warning ("DjvuLibre error: %s:%d", - msg->m_error.filename, - msg->m_error.lineno); - break; - default: - break; - } + handle_message (msg, error); ddjvu_message_pop (ctx); + if (error && *error) + return; } } +static void +djvu_wait_for_message (DjvuDocument *djvu_document, ddjvu_message_tag_t message, GError **error) +{ + ddjvu_context_t *ctx = djvu_document->d_context; + const ddjvu_message_t *msg; + + ddjvu_message_wait (ctx); + while ((msg = ddjvu_message_peek (ctx)) && (msg->m_any.tag != message)) { + handle_message (msg, error); + ddjvu_message_pop (ctx); + if (error && *error) + return; + } + if (msg && msg->m_any.tag == message) + ddjvu_message_pop (ctx); +} + static gboolean djvu_document_load (EvDocument *document, const char *uri, @@ -101,6 +157,7 @@ djvu_document_load (EvDocument *document, ddjvu_document_t *doc; gchar *filename; gboolean missing_files = FALSE; + GError *djvu_error = NULL; /* FIXME: We could actually load uris */ filename = g_filename_from_uri (uri, NULL, error); @@ -111,6 +168,10 @@ djvu_document_load (EvDocument *document, if (!doc) { g_free (filename); + g_set_error_literal (error, + EV_DOCUMENT_ERROR, + EV_DOCUMENT_ERROR_INVALID, + _("DJVU document has incorrect format")); return FALSE; } @@ -119,8 +180,36 @@ djvu_document_load (EvDocument *document, djvu_document->d_document = doc; - while (!ddjvu_document_decoding_done (djvu_document->d_document)) - djvu_handle_events (djvu_document, TRUE); + djvu_wait_for_message (djvu_document, DDJVU_DOCINFO, &djvu_error); + if (djvu_error) { + g_set_error_literal (error, + EV_DOCUMENT_ERROR, + EV_DOCUMENT_ERROR_INVALID, + djvu_error->message); + g_error_free (djvu_error); + g_free (filename); + ddjvu_document_release (djvu_document->d_document); + djvu_document->d_document = NULL; + + return FALSE; + } + + if (ddjvu_document_decoding_error (djvu_document->d_document)) + djvu_handle_events (djvu_document, TRUE, &djvu_error); + + if (djvu_error) { + g_set_error_literal (error, + EV_DOCUMENT_ERROR, + EV_DOCUMENT_ERROR_INVALID, + djvu_error->message); + g_error_free (djvu_error); + g_free (filename); + ddjvu_document_release (djvu_document->d_document); + djvu_document->d_document = NULL; + + return FALSE; + } + g_free (djvu_document->uri); djvu_document->uri = g_strdup (uri); @@ -156,11 +245,11 @@ djvu_document_load (EvDocument *document, g_free (filename); if (missing_files) { - g_set_error (error, - G_FILE_ERROR, - G_FILE_ERROR_EXIST, - _("The document is composed by several files. " - "One or more of such files cannot be accessed.")); + g_set_error_literal (error, + G_FILE_ERROR, + G_FILE_ERROR_EXIST, + _("The document is composed of several files. " + "One or more of such files cannot be accessed.")); return FALSE; } @@ -190,53 +279,91 @@ djvu_document_get_n_pages (EvDocument *document) } static void -djvu_document_get_page_size (EvDocument *document, - int page, - double *width, - double *height) +document_get_page_size (DjvuDocument *djvu_document, + gint page, + double *width, + double *height) { - DjvuDocument *djvu_document = DJVU_DOCUMENT (document); - ddjvu_pageinfo_t info; + ddjvu_pageinfo_t info; ddjvu_status_t r; - g_return_if_fail (djvu_document->d_document); - while ((r = ddjvu_document_get_pageinfo(djvu_document->d_document, page, &info)) < DDJVU_JOB_OK) - djvu_handle_events(djvu_document, TRUE); + djvu_handle_events(djvu_document, TRUE, NULL); if (r >= DDJVU_JOB_FAILED) - djvu_handle_events(djvu_document, TRUE); + djvu_handle_events(djvu_document, TRUE, NULL); *width = info.width * SCALE_FACTOR; *height = info.height * SCALE_FACTOR; } +static void +djvu_document_get_page_size (EvDocument *document, + EvPage *page, + double *width, + double *height) +{ + DjvuDocument *djvu_document = DJVU_DOCUMENT (document); + + g_return_if_fail (djvu_document->d_document); + + document_get_page_size (djvu_document, page->index, + width, height); +} + static cairo_surface_t * djvu_document_render (EvDocument *document, EvRenderContext *rc) { DjvuDocument *djvu_document = DJVU_DOCUMENT (document); - cairo_surface_t *surface, *rotated_surface; + cairo_surface_t *surface; gchar *pixels; gint rowstride; ddjvu_rect_t rrect; ddjvu_rect_t prect; ddjvu_page_t *d_page; - double page_width, page_height; + ddjvu_page_rotation_t rotation; + double page_width, page_height, tmp; static const cairo_user_data_key_t key; - d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, rc->page); + d_page = ddjvu_page_create_by_pageno (djvu_document->d_document, rc->page->index); while (!ddjvu_page_decoding_done (d_page)) - djvu_handle_events(djvu_document, TRUE); + djvu_handle_events(djvu_document, TRUE, NULL); page_width = ddjvu_page_get_width (d_page) * rc->scale * SCALE_FACTOR + 0.5; page_height = ddjvu_page_get_height (d_page) * rc->scale * SCALE_FACTOR + 0.5; - + + switch (rc->rotation) { + case 90: + rotation = DDJVU_ROTATE_90; + tmp = page_height; + page_height = page_width; + page_width = tmp; + + break; + case 180: + rotation = DDJVU_ROTATE_180; + + break; + case 270: + rotation = DDJVU_ROTATE_270; + tmp = page_height; + page_height = page_width; + page_width = tmp; + + break; + default: + rotation = DDJVU_ROTATE_0; + } +#ifdef HAVE_CAIRO_FORMAT_STRIDE_FOR_WIDTH + rowstride = cairo_format_stride_for_width (CAIRO_FORMAT_RGB24, page_width); +#else rowstride = page_width * 4; +#endif pixels = (gchar *) g_malloc (page_height * rowstride); - surface = cairo_image_surface_create_for_data (pixels, - CAIRO_FORMAT_ARGB32, + surface = cairo_image_surface_create_for_data ((guchar *)pixels, + CAIRO_FORMAT_RGB24, page_width, page_height, rowstride); @@ -248,6 +375,8 @@ djvu_document_render (EvDocument *document, prect.h = page_height; rrect = prect; + ddjvu_page_set_rotation (d_page, rotation); + ddjvu_page_render (d_page, DDJVU_RENDER_COLOR, &prect, &rrect, @@ -255,13 +384,7 @@ djvu_document_render (EvDocument *document, rowstride, pixels); - rotated_surface = ev_document_misc_surface_rotate_and_scale (surface, - page_width, - page_height, - rc->rotation); - cairo_surface_destroy (surface); - - return rotated_surface; + return surface; } static void @@ -294,35 +417,6 @@ djvu_document_class_init (DjvuDocumentClass *klass) gobject_class->finalize = djvu_document_finalize; } -static gboolean -djvu_document_can_get_text (EvDocument *document) -{ - return TRUE; -} - - -static char * -djvu_document_get_text (EvDocument *document, int page, EvRectangle *rect) -{ - DjvuDocument *djvu_document = DJVU_DOCUMENT (document); - double width, height; - EvRectangle rectangle; - char* text; - - djvu_document_get_page_size (document, page, &width, &height); - rectangle.x1 = rect->x1 / SCALE_FACTOR; - rectangle.y1 = (height - rect->y2) / SCALE_FACTOR; - rectangle.x2 = rect->x2 / SCALE_FACTOR; - rectangle.y2 = (height - rect->y1) / SCALE_FACTOR; - - text = djvu_text_copy (djvu_document, page, &rectangle); - - if (text == NULL) - text = g_strdup (""); - - return text; -} - static EvDocumentInfo * djvu_document_get_info (EvDocument *document) { @@ -338,14 +432,68 @@ djvu_document_document_iface_init (EvDocumentIface *iface) { iface->load = djvu_document_load; iface->save = djvu_document_save; - iface->can_get_text = djvu_document_can_get_text; - iface->get_text = djvu_document_get_text; iface->get_n_pages = djvu_document_get_n_pages; iface->get_page_size = djvu_document_get_page_size; iface->render = djvu_document_render; iface->get_info = djvu_document_get_info; } +static gchar * +djvu_text_copy (DjvuDocument *djvu_document, + gint page, + EvRectangle *rectangle) +{ + miniexp_t page_text; + gchar *text = NULL; + + while ((page_text = + ddjvu_document_get_pagetext (djvu_document->d_document, + page, "char")) == miniexp_dummy) + djvu_handle_events (djvu_document, TRUE, NULL); + + if (page_text != miniexp_nil) { + DjvuTextPage *page = djvu_text_page_new (page_text); + + text = djvu_text_page_copy (page, rectangle); + djvu_text_page_free (page); + ddjvu_miniexp_release (djvu_document->d_document, page_text); + } + + return text; +} + +static gchar * +djvu_selection_get_selected_text (EvSelection *selection, + EvRenderContext *rc, + EvSelectionStyle style, + EvRectangle *points) +{ + DjvuDocument *djvu_document = DJVU_DOCUMENT (selection); + double width, height; + EvRectangle rectangle; + gchar *text; + + djvu_document_get_page_size (EV_DOCUMENT (djvu_document), + rc->page, &width, &height); + rectangle.x1 = points->x1 / SCALE_FACTOR; + rectangle.y1 = (height - points->y2) / SCALE_FACTOR; + rectangle.x2 = points->x2 / SCALE_FACTOR; + rectangle.y2 = (height - points->y1) / SCALE_FACTOR; + + text = djvu_text_copy (djvu_document, rc->page->index, &rectangle); + + if (text == NULL) + text = g_strdup (""); + + return text; +} + +static void +djvu_selection_iface_init (EvSelectionIface *iface) +{ + iface->get_selected_text = djvu_selection_get_selected_text; +} + static void djvu_document_thumbnails_get_dimensions (EvDocumentThumbnails *document, EvRenderContext *rc, @@ -391,10 +539,10 @@ djvu_document_thumbnails_get_thumbnail (EvDocumentThumbnails *document, gdk_pixbuf_fill (pixbuf, 0xffffffff); pixels = gdk_pixbuf_get_pixels (pixbuf); - while (ddjvu_thumbnail_status (djvu_document->d_document, rc->page, 1) < DDJVU_JOB_OK) - djvu_handle_events(djvu_document, TRUE); + while (ddjvu_thumbnail_status (djvu_document->d_document, rc->page->index, 1) < DDJVU_JOB_OK) + djvu_handle_events(djvu_document, TRUE, NULL); - ddjvu_thumbnail_render (djvu_document->d_document, rc->page, + ddjvu_thumbnail_render (djvu_document->d_document, rc->page->index, &thumb_width, &thumb_height, djvu_document->thumbs_format, gdk_pixbuf_get_rowstride (pixbuf), @@ -421,30 +569,17 @@ djvu_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface) } /* EvFileExporterIface */ -static gboolean -djvu_document_file_exporter_format_supported (EvFileExporter *exporter, - EvFileExporterFormat format) -{ - return (format == EV_FILE_FORMAT_PS); // only exporting to PS is implemented. -} - static void -djvu_document_file_exporter_begin (EvFileExporter *exporter, - EvFileExporterFormat format, - const char *filename, /* for storing the temp ps file */ - int first_page, - int last_page, - double width, - double height, - gboolean duplex) +djvu_document_file_exporter_begin (EvFileExporter *exporter, + EvFileExporterContext *fc) { DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter); if (djvu_document->ps_filename) g_free (djvu_document->ps_filename); - djvu_document->ps_filename = g_strdup(filename); + djvu_document->ps_filename = g_strdup (fc->filename); - g_string_assign(djvu_document->opts, "-page="); + g_string_assign (djvu_document->opts, "-page="); } static void @@ -453,7 +588,7 @@ djvu_document_file_exporter_do_page (EvFileExporter *exporter, { DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter); - g_string_append_printf(djvu_document->opts, "%d,", (rc->page) + 1); + g_string_append_printf (djvu_document->opts, "%d,", (rc->page->index) + 1); } static void @@ -464,29 +599,39 @@ djvu_document_file_exporter_end (EvFileExporter *exporter) DjvuDocument *djvu_document = DJVU_DOCUMENT (exporter); - FILE *fn = fopen(djvu_document->ps_filename, "w"); + FILE *fn = fopen (djvu_document->ps_filename, "w"); if (fn == NULL) { - g_warning(_("Cannot open file “%s”."), djvu_document->ps_filename); + g_warning ("Cannot open file “%s”.", djvu_document->ps_filename); return; } d_optv[0] = djvu_document->opts->str; ddjvu_job_t * job = ddjvu_document_print(djvu_document->d_document, fn, d_optc, d_optv); - while (!ddjvu_job_done(job) ) { - djvu_handle_events (djvu_document, TRUE); + while (!ddjvu_job_done(job)) { + djvu_handle_events (djvu_document, TRUE, NULL); } fclose(fn); } +static EvFileExporterCapabilities +djvu_document_file_exporter_get_capabilities (EvFileExporter *exporter) +{ + return EV_FILE_EXPORTER_CAN_PAGE_SET | + EV_FILE_EXPORTER_CAN_COPIES | + EV_FILE_EXPORTER_CAN_COLLATE | + EV_FILE_EXPORTER_CAN_REVERSE | + EV_FILE_EXPORTER_CAN_GENERATE_PS; +} + static void djvu_document_file_exporter_iface_init (EvFileExporterIface *iface) { - iface->format_supported = djvu_document_file_exporter_format_supported; iface->begin = djvu_document_file_exporter_begin; iface->do_page = djvu_document_file_exporter_do_page; iface->end = djvu_document_file_exporter_end; + iface->get_capabilities = djvu_document_file_exporter_get_capabilities; } static void @@ -507,108 +652,62 @@ djvu_document_init (DjvuDocument *djvu_document) djvu_document->d_document = NULL; } -static void -djvu_document_find_begin (EvDocumentFind *document, - int page, - const char *search_string, - gboolean case_sensitive) +static GList * +djvu_document_find_find_text (EvDocumentFind *document, + EvPage *page, + const char *text, + gboolean case_sensitive) { DjvuDocument *djvu_document = DJVU_DOCUMENT (document); + miniexp_t page_text; + gdouble width, height; + GList *matches = NULL, *l; - if (djvu_document->search && - strcmp (search_string, djvu_text_get_text (djvu_document->search)) == 0) - return; - - if (djvu_document->search) - djvu_text_free (djvu_document->search); - - djvu_document->search = djvu_text_new (djvu_document, - page, - case_sensitive, - search_string); -} + g_return_val_if_fail (text != NULL, NULL); -static int -djvu_document_find_get_n_results (EvDocumentFind *document_find, int page) -{ - DjvuText *search = DJVU_DOCUMENT (document_find)->search; + while ((page_text = ddjvu_document_get_pagetext (djvu_document->d_document, + page->index, + "char")) == miniexp_dummy) + djvu_handle_events (djvu_document, TRUE, NULL); - if (search) { - return djvu_text_n_results (search, page); - } else { - return 0; + if (page_text != miniexp_nil) { + DjvuTextPage *tpage = djvu_text_page_new (page_text); + + djvu_text_page_prepare_search (tpage, case_sensitive); + if (tpage->links->len > 0) { + djvu_text_page_search (tpage, text); + matches = tpage->results; + } + djvu_text_page_free (tpage); + ddjvu_miniexp_release (djvu_document->d_document, page_text); } -} - -static gboolean -djvu_document_find_get_result (EvDocumentFind *document_find, - int page, - int n_result, - EvRectangle *rectangle) -{ - DjvuDocument *djvu_document = DJVU_DOCUMENT (document_find); - DjvuText *search = djvu_document->search; - EvRectangle *r; - double width, height; - if (search == NULL) - return FALSE; + if (!matches) + return NULL; - r = djvu_text_get_result (search, page, n_result); - if (r == NULL) - return FALSE; + document_get_page_size (djvu_document, page->index, &width, &height); + for (l = matches; l && l->data; l = g_list_next (l)) { + EvRectangle *r = (EvRectangle *)l->data; + gdouble tmp; - djvu_document_get_page_size (EV_DOCUMENT (djvu_document), - page, &width, &height); - rectangle->x1 = r->x1 * SCALE_FACTOR; - rectangle->y1 = height - r->y2 * SCALE_FACTOR; - rectangle->x2 = r->x2 * SCALE_FACTOR; - rectangle->y2 = height - r->y1 * SCALE_FACTOR; + tmp = r->y1; - return TRUE; -} + r->x1 *= SCALE_FACTOR; + r->x2 *= SCALE_FACTOR; -static int -djvu_document_find_page_has_results (EvDocumentFind *document_find, - int page) -{ - DjvuText *search = DJVU_DOCUMENT (document_find)->search; - - return search && djvu_text_has_results (search, page); -} - -static double -djvu_document_find_get_progress (EvDocumentFind *document_find) -{ - DjvuText *search = DJVU_DOCUMENT (document_find)->search; - - if (search == NULL) { - return 0; + tmp = r->y1; + r->y1 = height - r->y2 * SCALE_FACTOR; + r->y2 = height - tmp * SCALE_FACTOR; } + - return djvu_text_get_progress (search); -} - -static void -djvu_document_find_cancel (EvDocumentFind *document) -{ - DjvuDocument *djvu_document = DJVU_DOCUMENT (document); - - if (djvu_document->search) { - djvu_text_free (djvu_document->search); - djvu_document->search = NULL; - } + return matches; } static void djvu_document_find_iface_init (EvDocumentFindIface *iface) { - iface->begin = djvu_document_find_begin; - iface->get_n_results = djvu_document_find_get_n_results; - iface->get_result = djvu_document_find_get_result; - iface->page_has_results = djvu_document_find_page_has_results; - iface->get_progress = djvu_document_find_get_progress; - iface->cancel = djvu_document_find_cancel; + iface->find_text = djvu_document_find_find_text; } static GList *