Attachment 36098 Details for Bug 28276 – patch to add a function to glib to get text position in a page

[patch] patch to add a function to glib to get text position in a page

0001-poppler-page-get-text-mapping-in-poppler-glib.patch (text/plain), 5.49 KB, created by Daniel Garcia on 2010-06-07 04:51:37 UTC

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Creator: Daniel Garcia

Created: 2010-06-07 04:51:37 UTC

Size: 5.49 KB

patch

obsolete

>From 850e7563b4a50c838749bc728b99ba587e1ebe72 Mon Sep 17 00:00:00 2001
>From: Daniel Garcia <danigm@yaco.es>
>Date: Mon, 7 Jun 2010 13:46:03 +0200
>Subject: [PATCH] poppler page get text mapping in poppler-glib
>
>---
> glib/poppler-page.cc |  105 +++++++++++++++++++++++++++++++++++++++++++++++++-
> glib/poppler-page.h  |   15 +++++++
> glib/poppler.h       |    1 +
> 3 files changed, 119 insertions(+), 2 deletions(-)
>
>diff --git a/glib/poppler-page.cc b/glib/poppler-page.cc
>index 39645bd..256872f 100644
>--- a/glib/poppler-page.cc
>+++ b/glib/poppler-page.cc
>@@ -1743,14 +1743,115 @@ poppler_annot_mapping_free (PopplerAnnotMapping *mapping)
>   g_free (mapping);
> }
> 
>-void 
>+void
> poppler_page_get_crop_box (PopplerPage *page, PopplerRectangle *rect)
> {
>   PDFRectangle* cropBox = page->page->getCropBox ();
>-  
>+
>   rect->x1 = cropBox->x1;
>   rect->x2 = cropBox->x2;
>   rect->y1 = cropBox->y1;
>   rect->y2 = cropBox->y2;
> }
> 
>+/* PopplerTextMapping type */
>+POPPLER_DEFINE_BOXED_TYPE (PopplerTextMapping, poppler_text_mapping,
>+			   poppler_text_mapping_copy,
>+			   poppler_text_mapping_free)
>+
>+PopplerTextMapping *
>+poppler_text_mapping_new (void)
>+{
>+  return (PopplerTextMapping *) g_new0 (PopplerTextMapping, 1);
>+}
>+
>+PopplerTextMapping *
>+poppler_text_mapping_copy (PopplerTextMapping *mapping)
>+{
>+  PopplerTextMapping *new_mapping;
>+
>+  new_mapping = poppler_text_mapping_new ();
>+  *new_mapping = *mapping;
>+
>+  return new_mapping;
>+}
>+
>+void
>+poppler_text_mapping_free (PopplerTextMapping *mapping)
>+{
>+  g_free (mapping);
>+}
>+
>+/**
>+ * poppler_page_get_text_mapping:
>+ * @page: A #PopplerPage
>+ *
>+ * Returns a list of #PopplerTextMapping items
>+ * This list must be freed with poppler_page_free_text_mapping() when done.
>+ *
>+ * Return value: A #GList of #PopplerTextMapping
>+ **/
>+GList *
>+poppler_page_get_text_mapping (PopplerPage *page)
>+{
>+  TextPage *text;
>+  TextWordList *wordlist;
>+  TextWord *word;
>+  GList *mapping_list = NULL;
>+  PopplerTextMapping *mapping;
>+  int i, j, offset = 0;
>+
>+  text = poppler_page_get_text_page (page);
>+  wordlist = text->makeWordList (gFalse);
>+
>+  for (i=0; i < wordlist->getLength (); i++)
>+  {
>+    word = wordlist->get(i);
>+    for (j=0; j < word->getLength (); j++)
>+    {
>+      mapping = poppler_text_mapping_new ();
>+      mapping->offset = offset++;
>+
>+      word->getCharBBox (j,
>+                         &(mapping->area.x1),
>+                         &(mapping->area.y1),
>+                         &(mapping->area.x2),
>+                         &(mapping->area.y2));
>+
>+      mapping_list = g_list_prepend (mapping_list, mapping);
>+    }
>+
>+    // adding spaces and break lines
>+    mapping = poppler_text_mapping_new ();
>+    mapping->offset = offset++;
>+
>+    word->getBBox (&(mapping->area.x1),
>+                   &(mapping->area.y1),
>+                   &(mapping->area.x2),
>+                   &(mapping->area.y2));
>+
>+    mapping->area.x1 = mapping->area.x2;
>+    mapping->area.y1 = mapping->area.y2;
>+
>+    mapping_list = g_list_prepend (mapping_list, mapping);
>+  }
>+
>+  return g_list_reverse (mapping_list);
>+}
>+
>+/**
>+ * poppler_page_free_text_mapping:
>+ * @list: A list of #PopplerTextMappings
>+ *
>+ * Frees a list of #PopplerTextMappings allocated by
>+ * poppler_page_get_text_mapping().
>+ **/
>+void
>+poppler_page_free_text_mapping (GList *list)
>+{
>+  if (!list)
>+    return;
>+
>+  g_list_foreach (list, (GFunc)poppler_text_mapping_free, NULL);
>+  g_list_free (list);
>+}
>diff --git a/glib/poppler-page.h b/glib/poppler-page.h
>index 20dc20f..288276f 100644
>--- a/glib/poppler-page.h
>+++ b/glib/poppler-page.h
>@@ -114,6 +114,8 @@ GList                 *poppler_page_get_annot_mapping    (PopplerPage        *pa
> void                   poppler_page_free_annot_mapping   (GList              *list);
> void 		      poppler_page_get_crop_box 	 (PopplerPage        *page,
> 							  PopplerRectangle   *rect);
>+GList                 *poppler_page_get_text_mapping     (PopplerPage        *page);
>+void                   poppler_page_free_text_mapping    (GList              *list);
> 
> 
> /* A rectangle on a page, with coordinates in PDF points. */
>@@ -215,6 +217,19 @@ PopplerAnnotMapping *poppler_annot_mapping_new      (void);
> PopplerAnnotMapping *poppler_annot_mapping_copy     (PopplerAnnotMapping *mapping);
> void                 poppler_annot_mapping_free     (PopplerAnnotMapping *mapping);
> 
>+/* Mapping between areas on the current page and text */
>+#define POPPLER_TYPE_TEXT_MAPPING                  (poppler_text_mapping_get_type ())
>+struct _PopplerTextMapping
>+{
>+  PopplerRectangle area;
>+  gint offset;
>+};
>+
>+GType                poppler_text_mapping_get_type (void) G_GNUC_CONST;
>+PopplerTextMapping  *poppler_text_mapping_new      (void);
>+PopplerTextMapping  *poppler_text_mapping_copy     (PopplerTextMapping *mapping);
>+void                 poppler_text_mapping_free     (PopplerTextMapping *mapping);
>+
> G_END_DECLS
> 
> #endif /* __POPPLER_PAGE_H__ */
>diff --git a/glib/poppler.h b/glib/poppler.h
>index 01bcafa..b9cd7dd 100644
>--- a/glib/poppler.h
>+++ b/glib/poppler.h
>@@ -90,6 +90,7 @@ typedef struct _PopplerPageTransition      PopplerPageTransition;
> typedef struct _PopplerImageMapping        PopplerImageMapping;
> typedef struct _PopplerFormFieldMapping    PopplerFormFieldMapping;
> typedef struct _PopplerAnnotMapping        PopplerAnnotMapping;
>+typedef struct _PopplerTextMapping         PopplerTextMapping;
> typedef struct _PopplerPage                PopplerPage;
> typedef struct _PopplerFontInfo            PopplerFontInfo;
> typedef struct _PopplerLayer               PopplerLayer;
>-- 
>1.7.1.226.g770c5
>

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