help: added Vietnamese manual

[evince.git] / backend / pdf / ev-poppler.cc

diff --git a/backend/pdf/ev-poppler.cc b/backend/pdf/ev-poppler.cc
index ec2bbc0835b7f01636344c939e2930d2145c09ce..6ba82a6dbbb61e40c2e471f5474f386b31d3094a 100644 (file)
--- a/backend/pdf/ev-poppler.cc
+++ b/backend/pdf/ev-poppler.cc
@@ -35,6 +35,7 @@
 
 #include "ev-poppler.h"
 #include "ev-file-exporter.h"
 
 #include "ev-poppler.h"
 #include "ev-file-exporter.h"

+#include "ev-mapping.h"

 #include "ev-document-find.h"
 #include "ev-document-misc.h"
 #include "ev-document-links.h"
 #include "ev-document-find.h"
 #include "ev-document-misc.h"
 #include "ev-document-links.h"


@@ -52,6 +53,11 @@
 #include "ev-attachment.h"
 #include "ev-image.h"
 
 #include "ev-attachment.h"
 #include "ev-image.h"
 

+#include <libxml/tree.h>
+#include <libxml/parser.h>
+#include <libxml/xpath.h>
+#include <libxml/xpathInternals.h>
+

 #if (defined (HAVE_POPPLER_PAGE_RENDER)) && (defined (HAVE_CAIRO_PDF) || defined (HAVE_CAIRO_PS))
 #define HAVE_CAIRO_PRINT
 #endif
 #if (defined (HAVE_POPPLER_PAGE_RENDER)) && (defined (HAVE_CAIRO_PDF) || defined (HAVE_CAIRO_PS))
 #define HAVE_CAIRO_PRINT
 #endif


@@ -481,14 +487,17 @@ pdf_page_render (PopplerPage     *page,
 
 #ifdef HAVE_POPPLER_PAGE_RENDER
        cairo_t *cr;
 
 #ifdef HAVE_POPPLER_PAGE_RENDER
        cairo_t *cr;

-       
-       surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
+       cairo_pattern_t *pattern;
+
+       surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,

                                              width, height);
                                              width, height);

-       memset (cairo_image_surface_get_data (surface), 0xff,
-               cairo_image_surface_get_height (surface) *
-               cairo_image_surface_get_stride (surface));
-       

        cr = cairo_create (surface);
        cr = cairo_create (surface);

+
+       cairo_save (cr);
+       cairo_set_source_rgba (cr, 1., 1., 1., 0);
+       cairo_paint (cr);
+       cairo_restore (cr);
+

        switch (rc->rotation) {
                case 90:
                        cairo_translate (cr, width, 0);
        switch (rc->rotation) {
                case 90:
                        cairo_translate (cr, width, 0);


@@ -505,6 +514,13 @@ pdf_page_render (PopplerPage     *page,
        cairo_scale (cr, rc->scale, rc->scale);
        cairo_rotate (cr, rc->rotation * G_PI / 180.0);
        poppler_page_render (page, cr);
        cairo_scale (cr, rc->scale, rc->scale);
        cairo_rotate (cr, rc->rotation * G_PI / 180.0);
        poppler_page_render (page, cr);

+
+       pattern = cairo_pattern_create_rgb (1., 1., 1.);
+       cairo_set_operator (cr, CAIRO_OPERATOR_DEST_OVER);
+       cairo_set_source (cr, pattern);
+       cairo_paint (cr);
+
+       cairo_pattern_destroy (pattern);

        cairo_destroy (cr);
 #else /* HAVE_POPPLER_PAGE_RENDER */
        GdkPixbuf *pixbuf;
        cairo_destroy (cr);
 #else /* HAVE_POPPLER_PAGE_RENDER */
        GdkPixbuf *pixbuf;


@@ -573,6 +589,94 @@ pdf_document_set_password (EvDocumentSecurity *document_security,
        document->password = g_strdup (password);
 }
 
        document->password = g_strdup (password);
 }
 

+
+/* reference:
+http://www.pdfa.org/lib/exe/fetch.php?id=pdfa%3Aen%3Atechdoc&cache=cache&media=pdfa:techdoc:tn0001_pdfa-1_and_namespaces_2008-03-18.pdf */
+static char *
+pdf_document_get_format_from_metadata (const char *metadata)
+{
+       xmlDocPtr doc;
+       xmlXPathContextPtr xpathCtx;
+       xmlXPathObjectPtr xpathObj;
+       xmlChar *part = NULL;
+       xmlChar *conf = NULL;
+       char *result = NULL;
+       int i;
+
+       doc = xmlParseMemory (metadata, strlen (metadata));
+       if (doc == NULL)
+               return NULL;      /* invalid xml metadata */
+
+       xpathCtx = xmlXPathNewContext (doc);
+       if (xpathCtx == NULL) {
+               xmlFreeDoc (doc);
+               return NULL;      /* invalid xpath context */
+       }
+
+       /* add pdf/a namespaces */
+       xmlXPathRegisterNs (xpathCtx, BAD_CAST "x", BAD_CAST "adobe:ns:meta/");
+       xmlXPathRegisterNs (xpathCtx, BAD_CAST "rdf", BAD_CAST "http://www.w3.org/1999/02/22-rdf-syntax-ns#");
+       xmlXPathRegisterNs (xpathCtx, BAD_CAST "pdfaid", BAD_CAST "http://www.aiim.org/pdfa/ns/id/");
+
+       /* reads pdf/a part */
+       /* first syntax: child node */
+       xpathObj = xmlXPathEvalExpression (BAD_CAST "/x:xmpmeta/rdf:RDF/rdf:Description/pdfaid:part", xpathCtx);
+       if (xpathObj != NULL) {
+               if (xpathObj->nodesetval != NULL && xpathObj->nodesetval->nodeNr != 0)
+                       part = xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);
+
+               xmlXPathFreeObject (xpathObj);
+       }
+       if (part == NULL) {
+               /* second syntax: attribute */
+               xpathObj = xmlXPathEvalExpression (BAD_CAST "/x:xmpmeta/rdf:RDF/rdf:Description/@pdfaid:part", xpathCtx);
+               if (xpathObj != NULL) {
+                       if (xpathObj->nodesetval != NULL && xpathObj->nodesetval->nodeNr != 0)
+                               part = xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);
+
+                       xmlXPathFreeObject (xpathObj);
+               }
+       }
+
+       /* reads pdf/a conformance */
+       /* first syntax: child node */
+       xpathObj = xmlXPathEvalExpression (BAD_CAST "/x:xmpmeta/rdf:RDF/rdf:Description/pdfaid:conformance", xpathCtx);
+       if (xpathObj != NULL) {
+               if (xpathObj->nodesetval != NULL && xpathObj->nodesetval->nodeNr != 0)
+                       conf = xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);
+
+               xmlXPathFreeObject (xpathObj);
+       }
+       if (conf == NULL) {
+               /* second syntax: attribute */
+               xpathObj = xmlXPathEvalExpression (BAD_CAST "/x:xmpmeta/rdf:RDF/rdf:Description/@pdfaid:conformance", xpathCtx);
+               if (xpathObj != NULL) {
+                       if (xpathObj->nodesetval != NULL && xpathObj->nodesetval->nodeNr != 0)
+                               conf = xmlNodeGetContent (xpathObj->nodesetval->nodeTab[0]);
+
+                       xmlXPathFreeObject (xpathObj);
+               }
+       }
+
+       if (part != NULL && conf != NULL) {
+               /* makes conf lowercase */
+               for (i = 0; conf[i]; i++)
+                       conf[i] = g_ascii_tolower (conf[i]);
+
+               /* return buffer */
+               result = g_strdup_printf ("PDF/A - %s%s", part, conf);
+       }
+
+       /* Cleanup */
+       xmlFree (part);
+       xmlFree (conf);
+       xmlXPathFreeContext (xpathCtx);
+       xmlFreeDoc (doc);
+
+       return result;
+}
+
+

 static EvDocumentInfo *
 pdf_document_get_info (EvDocument *document)
 {
 static EvDocumentInfo *
 pdf_document_get_info (EvDocument *document)
 {


@@ -582,6 +686,8 @@ pdf_document_get_info (EvDocument *document)
        PopplerViewerPreferences view_prefs;
        PopplerPermissions permissions;
        EvPage *page;
        PopplerViewerPreferences view_prefs;
        PopplerPermissions permissions;
        EvPage *page;

+       char *metadata;
+       char *fmt;

 
        info = g_new0 (EvDocumentInfo, 1);
 
 
        info = g_new0 (EvDocumentInfo, 1);
 


@@ -618,8 +724,18 @@ pdf_document_get_info (EvDocument *document)
                      "creation-date", &(info->creation_date),
                      "mod-date", &(info->modified_date),
                      "linearized", &(info->linearized),
                      "creation-date", &(info->creation_date),
                      "mod-date", &(info->modified_date),
                      "linearized", &(info->linearized),

+                     "metadata", &metadata,

                      NULL);
 
                      NULL);
 

+       if (metadata != NULL) {
+               fmt = pdf_document_get_format_from_metadata(metadata);
+               if (fmt != NULL) {
+                       g_free (info->format);
+                       info->format = fmt;
+               }
+               g_free (metadata);
+       }
+

        info->n_pages = ev_document_get_n_pages (document);
 
        if (info->n_pages > 0) {
        info->n_pages = ev_document_get_n_pages (document);
 
        if (info->n_pages > 0) {


@@ -910,9 +1026,11 @@ ev_link_dest_from_dest (PdfDocument *pdf_document,
                        g_object_unref (poppler_page);
                }
                        break;
                        g_object_unref (poppler_page);
                }
                        break;

-               case POPPLER_DEST_FIT:
+               case POPPLER_DEST_FITB:
+               case POPPLER_DEST_FIT:

                        ev_dest = ev_link_dest_new_fit (dest->page_num - 1);
                        break;
                        ev_dest = ev_link_dest_new_fit (dest->page_num - 1);
                        break;

+               case POPPLER_DEST_FITBH:

                case POPPLER_DEST_FITH: {
                        PopplerPage *poppler_page;
                        double height;
                case POPPLER_DEST_FITH: {
                        PopplerPage *poppler_page;
                        double height;


@@ -926,6 +1044,7 @@ ev_link_dest_from_dest (PdfDocument *pdf_document,
                        g_object_unref (poppler_page);
                }
                        break;
                        g_object_unref (poppler_page);
                }
                        break;

+               case POPPLER_DEST_FITBV:

                case POPPLER_DEST_FITV:
                        ev_dest = ev_link_dest_new_fitv (dest->page_num - 1,
                                                         dest->left,
                case POPPLER_DEST_FITV:
                        ev_dest = ev_link_dest_new_fitv (dest->page_num - 1,
                                                         dest->left,


@@ -946,15 +1065,6 @@ ev_link_dest_from_dest (PdfDocument *pdf_document,
                        g_object_unref (poppler_page);
                }
                        break;
                        g_object_unref (poppler_page);
                }
                        break;

-               case POPPLER_DEST_FITB:
-                       unimplemented_dest = "POPPLER_DEST_FITB";
-                       break;
-               case POPPLER_DEST_FITBH:
-                       unimplemented_dest = "POPPLER_DEST_FITBH";
-                       break;
-               case POPPLER_DEST_FITBV:
-                       unimplemented_dest = "POPPLER_DEST_FITBV";
-                       break;

                case POPPLER_DEST_NAMED:
                        ev_dest = ev_link_dest_new_named (dest->named_dest);
                        break;
                case POPPLER_DEST_NAMED:
                        ev_dest = ev_link_dest_new_named (dest->named_dest);
                        break;


@@ -1154,17 +1264,17 @@ pdf_document_links_get_links (EvDocumentLinks *document_links,
 
        for (list = mapping_list; list; list = list->next) {
                PopplerLinkMapping *link_mapping;
 
        for (list = mapping_list; list; list = list->next) {
                PopplerLinkMapping *link_mapping;

-               EvLinkMapping *ev_link_mapping;
+               EvMapping *ev_link_mapping;

 
                link_mapping = (PopplerLinkMapping *)list->data;
 
                link_mapping = (PopplerLinkMapping *)list->data;

-               ev_link_mapping = g_new (EvLinkMapping, 1);
-               ev_link_mapping->link = ev_link_from_action (pdf_document,
+               ev_link_mapping = g_new (EvMapping, 1);
+               ev_link_mapping->data = ev_link_from_action (pdf_document,

                                                             link_mapping->action);
                                                             link_mapping->action);

-               ev_link_mapping->x1 = link_mapping->area.x1;
-               ev_link_mapping->x2 = link_mapping->area.x2;
+               ev_link_mapping->area.x1 = link_mapping->area.x1;
+               ev_link_mapping->area.x2 = link_mapping->area.x2;

                /* Invert this for X-style coordinates */
                /* Invert this for X-style coordinates */

-               ev_link_mapping->y1 = height - link_mapping->area.y2;
-               ev_link_mapping->y2 = height - link_mapping->area.y1;
+               ev_link_mapping->area.y1 = height - link_mapping->area.y2;
+               ev_link_mapping->area.y2 = height - link_mapping->area.y1;

 
                retval = g_list_prepend (retval, ev_link_mapping);
        }
 
                retval = g_list_prepend (retval, ev_link_mapping);
        }


@@ -1219,17 +1329,17 @@ pdf_document_images_get_image_mapping (EvDocumentImages *document_images,
 
        for (list = mapping_list; list; list = list->next) {
                PopplerImageMapping *image_mapping;
 
        for (list = mapping_list; list; list = list->next) {
                PopplerImageMapping *image_mapping;

-               EvImageMapping *ev_image_mapping;
+               EvMapping *ev_image_mapping;

 
                image_mapping = (PopplerImageMapping *)list->data;
 
 
                image_mapping = (PopplerImageMapping *)list->data;
 

-               ev_image_mapping = g_new (EvImageMapping, 1);
+               ev_image_mapping = g_new (EvMapping, 1);

                
                

-               ev_image_mapping->image = ev_image_new (page, image_mapping->image_id);
-               ev_image_mapping->x1 = image_mapping->area.x1;
-               ev_image_mapping->x2 = image_mapping->area.x2;
-               ev_image_mapping->y1 = image_mapping->area.y1;
-               ev_image_mapping->y2 = image_mapping->area.y2;
+               ev_image_mapping->data = ev_image_new (page, image_mapping->image_id);
+               ev_image_mapping->area.x1 = image_mapping->area.x1;
+               ev_image_mapping->area.y1 = image_mapping->area.y1;
+               ev_image_mapping->area.x2 = image_mapping->area.x2;
+               ev_image_mapping->area.y2 = image_mapping->area.y2;

 
                retval = g_list_prepend (retval, ev_image_mapping);
        }
 
                retval = g_list_prepend (retval, ev_image_mapping);
        }


@@ -1374,9 +1484,9 @@ pdf_document_thumbnails_get_dimensions (EvDocumentThumbnails *document_thumbnail
        poppler_page_get_size (POPPLER_PAGE (rc->page->backend_page),
                               &page_width, &page_height);
        
        poppler_page_get_size (POPPLER_PAGE (rc->page->backend_page),
                               &page_width, &page_height);
        

-       *width = (gint) MAX (page_width * rc->scale, 1);
-       *height = (gint) MAX (page_height * rc->scale, 1);
-       
+       *width = MAX ((gint)(page_width * rc->scale + 0.5), 1);
+       *height = MAX ((gint)(page_height * rc->scale + 0.5), 1);
+

        if (rc->rotation == 90 || rc->rotation == 270) {
                gint  temp;
 
        if (rc->rotation == 90 || rc->rotation == 270) {
                gint  temp;
 


@@ -2127,7 +2237,7 @@ pdf_document_forms_get_form_fields (EvDocumentForms *document,
 
        for (list = fields; list; list = list->next) {
                PopplerFormFieldMapping *mapping;
 
        for (list = fields; list; list = list->next) {
                PopplerFormFieldMapping *mapping;

-               EvFormFieldMapping *field_mapping;
+               EvMapping *field_mapping;

                EvFormField *ev_field;
 
                mapping = (PopplerFormFieldMapping *)list->data;
                EvFormField *ev_field;
 
                mapping = (PopplerFormFieldMapping *)list->data;


@@ -2136,13 +2246,13 @@ pdf_document_forms_get_form_fields (EvDocumentForms *document,
                if (!ev_field)
                        continue;
 
                if (!ev_field)
                        continue;
 

-               field_mapping = g_new0 (EvFormFieldMapping, 1);
-               field_mapping->x1 = mapping->area.x1;
-               field_mapping->x2 = mapping->area.x2;
-               field_mapping->y1 = height - mapping->area.y2;
-               field_mapping->y2 = height - mapping->area.y1;
-               field_mapping->field = ev_field;
-               field_mapping->field->page = EV_PAGE (g_object_ref (page));
+               field_mapping = g_new0 (EvMapping, 1);
+               field_mapping->area.x1 = mapping->area.x1;
+               field_mapping->area.x2 = mapping->area.x2;
+               field_mapping->area.y1 = height - mapping->area.y2;
+               field_mapping->area.y2 = height - mapping->area.y1;
+               field_mapping->data = ev_field;
+               ev_field->page = EV_PAGE (g_object_ref (page));

 
                g_object_set_data_full (G_OBJECT (ev_field),
                                        "poppler-field",
 
                g_object_set_data_full (G_OBJECT (ev_field),
                                        "poppler-field",


@@ -2430,13 +2540,13 @@ ev_annot_from_poppler_annot (PopplerAnnot *poppler_annot,
                        PopplerAnnotMarkup *markup;
                        gchar *label;
                        gdouble opacity;
                        PopplerAnnotMarkup *markup;
                        gchar *label;
                        gdouble opacity;

-                       gboolean is_open;

                        PopplerRectangle poppler_rect;
 
                        markup = POPPLER_ANNOT_MARKUP (poppler_annot);
 
                        if (poppler_annot_markup_get_popup_rectangle (markup, &poppler_rect)) {
                                EvRectangle ev_rect;
                        PopplerRectangle poppler_rect;
 
                        markup = POPPLER_ANNOT_MARKUP (poppler_annot);
 
                        if (poppler_annot_markup_get_popup_rectangle (markup, &poppler_rect)) {
                                EvRectangle ev_rect;

+                               gboolean is_open;

                                gdouble height;
 
                                poppler_page_get_size (POPPLER_PAGE (page->backend_page),
                                gdouble height;
 
                                poppler_page_get_size (POPPLER_PAGE (page->backend_page),


@@ -2446,17 +2556,28 @@ ev_annot_from_poppler_annot (PopplerAnnot *poppler_annot,
                                ev_rect.y1 = height - poppler_rect.y2;
                                ev_rect.y2 = height - poppler_rect.y1;
 
                                ev_rect.y1 = height - poppler_rect.y2;
                                ev_rect.y2 = height - poppler_rect.y1;
 

-                               g_object_set (ev_annot, "rectangle", &ev_rect, NULL);
+                               is_open = poppler_annot_markup_get_popup_is_open (markup);
+
+                               g_object_set (ev_annot,
+                                             "rectangle", &ev_rect,
+                                             "is_open", is_open,
+                                             "has_popup", TRUE,
+                                             NULL);
+                       } else {
+                               /* FIXME: Use poppler_annot_markup_has_popup() when
+                                * new poppler is released.
+                                */
+                               g_object_set (ev_annot,
+                                             "has_popup", FALSE,
+                                             NULL);

                        }
 
                        label = poppler_annot_markup_get_label (markup);
                        opacity = poppler_annot_markup_get_opacity (markup);
                        }
 
                        label = poppler_annot_markup_get_label (markup);
                        opacity = poppler_annot_markup_get_opacity (markup);

-                       is_open = poppler_annot_markup_get_popup_is_open (markup);

 
                        g_object_set (ev_annot,
                                      "label", label,
                                      "opacity", opacity,
 
                        g_object_set (ev_annot,
                                      "label", label,
                                      "opacity", opacity,

-                                     "is_open", is_open,

                                      NULL);
 
                        g_free (label);
                                      NULL);
 
                        g_free (label);


@@ -2485,7 +2606,7 @@ pdf_document_annotations_get_annotations (EvDocumentAnnotations *document_annota
 
        for (list = annots; list; list = list->next) {
                PopplerAnnotMapping *mapping;
 
        for (list = annots; list; list = list->next) {
                PopplerAnnotMapping *mapping;

-               EvAnnotationMapping *annot_mapping;
+               EvMapping *annot_mapping;

                EvAnnotation        *ev_annot;
 
                mapping = (PopplerAnnotMapping *)list->data;
                EvAnnotation        *ev_annot;
 
                mapping = (PopplerAnnotMapping *)list->data;


@@ -2500,12 +2621,12 @@ pdf_document_annotations_get_annotations (EvDocumentAnnotations *document_annota
                if (!ev_annot->name)
                        ev_annot->name = g_strdup_printf ("annot-%d-%d", page->index, i);
 
                if (!ev_annot->name)
                        ev_annot->name = g_strdup_printf ("annot-%d-%d", page->index, i);
 

-               annot_mapping = g_new0 (EvAnnotationMapping, 1);
-               annot_mapping->x1 = mapping->area.x1;
-               annot_mapping->x2 = mapping->area.x2;
-               annot_mapping->y1 = height - mapping->area.y2;
-               annot_mapping->y2 = height - mapping->area.y1;
-               annot_mapping->annotation = ev_annot;
+               annot_mapping = g_new (EvMapping, 1);
+               annot_mapping->area.x1 = mapping->area.x1;
+               annot_mapping->area.x2 = mapping->area.x2;
+               annot_mapping->area.y1 = height - mapping->area.y2;
+               annot_mapping->area.y2 = height - mapping->area.y1;
+               annot_mapping->data = ev_annot;

 
                g_object_set_data_full (G_OBJECT (ev_annot),
                                        "poppler-annot",
 
                g_object_set_data_full (G_OBJECT (ev_annot),
                                        "poppler-annot",