Attachment 36289 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_layout-in-poppler-glib.patch (text/plain), 3.77 KB, created by Daniel Garcia on 2010-06-15 08:01:40 UTC

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Creator: Daniel Garcia

Created: 2010-06-15 08:01:40 UTC

Size: 3.77 KB

patch

obsolete

>From 5b8b95b32a469cd035bf31055969fbd0e2cc516e Mon Sep 17 00:00:00 2001
>From: Daniel Garcia <danigm@yaco.es>
>Date: Tue, 15 Jun 2010 16:57:32 +0200
>Subject: [PATCH] poppler_page_get_text_layout in poppler/glib
>
> Returns an array of PopplerRectangle items and each Rectangle is a
> text character position.
>
> The position in this array represent the offset in text returned by
> poppler_page_get_text
>---
> glib/poppler-page.cc |   87 ++++++++++++++++++++++++++++++++++++++++++++++++++
> glib/poppler-page.h  |    4 ++-
> 2 files changed, 90 insertions(+), 1 deletions(-)
>
>diff --git a/glib/poppler-page.cc b/glib/poppler-page.cc
>index 14601a6..27812d5 100644
>--- a/glib/poppler-page.cc
>+++ b/glib/poppler-page.cc
>@@ -1733,3 +1733,90 @@ poppler_page_get_crop_box (PopplerPage *page, PopplerRectangle *rect)
>   rect->y2 = cropBox->y2;
> }
> 
>+/**
>+ * poppler_page_get_text_layout:
>+ * @page: A #PopplerPage
>+ *
>+ * Returns an array of #PopplerRectangle items
>+ * This array must be freed with g_free () when done.
>+ *
>+ * The position in the array represent the offset in text returned by
>+ * poppler_page_get_text
>+ *
>+ * Return value: An array of #PopplerRectangle, n_areas is the size of
>+ * the array.
>+ **/
>+gboolean
>+poppler_page_get_text_layout (PopplerPage       *page,
>+                              PopplerRectangle **areas,
>+                              guint             *n_areas)
>+{
>+  TextPage *text;
>+  TextWordList *wordlist;
>+  TextWord *word, *nextword;
>+  PopplerRectangle *rect;
>+  int i, j, offset = 0;
>+  gdouble x1, y1, x2, y2;
>+  gdouble x3, y3, x4, y4;
>+
>+  *n_areas = 0;
>+
>+  text = poppler_page_get_text_page (page);
>+  wordlist = text->makeWordList (gFalse);
>+
>+  // Getting the array size
>+  for (i=0; i < wordlist->getLength (); i++)
>+  {
>+    word = wordlist->get (i);
>+    *n_areas += word->getLength () + 1;
>+  }
>+
>+  // Creating areas
>+  *areas = g_new (PopplerRectangle, *n_areas);
>+
>+  // Calculating each char position
>+  for (i=0; i < wordlist->getLength (); i++)
>+  {
>+    word = wordlist->get (i);
>+    for (j=0; j < word->getLength (); j++)
>+    {
>+      rect = *areas + offset;
>+      word->getCharBBox (j,
>+                         &(rect->x1),
>+                         &(rect->y1),
>+                         &(rect->x2),
>+                         &(rect->y2));
>+      offset++;
>+    }
>+
>+    // adding spaces and break lines
>+    nextword = word->getNext ();
>+    if (nextword)
>+    {
>+      rect = *areas + offset;
>+      word->getBBox (&x1, &y1, &x2, &y2);
>+      nextword->getBBox (&x3, &y3, &x4, &y4);
>+      // space is from one wort to other and with the same height as
>+      // first word.
>+      rect->x1 = x2;
>+      rect->y1 = y1;
>+      rect->x2 = x3;
>+      rect->y2 = y2;
>+    }
>+    else
>+    {
>+      // end of line
>+      rect = *areas + offset;
>+      word->getBBox (&x1, &y1, &x2, &y2);
>+      rect->x1 = x2;
>+      rect->y1 = y2;
>+      rect->x2 = x2;
>+      rect->y2 = y2;
>+    }
>+    offset++;
>+  }
>+
>+  delete wordlist;
>+
>+  return gTrue;
>+}
>diff --git a/glib/poppler-page.h b/glib/poppler-page.h
>index 20dc20f..eaa9547 100644
>--- a/glib/poppler-page.h
>+++ b/glib/poppler-page.h
>@@ -114,7 +114,9 @@ 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);
>-
>+gboolean               poppler_page_get_text_layout      (PopplerPage        *page,
>+                                                          PopplerRectangle  **areas,
>+                                                          guint              *n_areas);
> 
> /* A rectangle on a page, with coordinates in PDF points. */
> #define POPPLER_TYPE_RECTANGLE             (poppler_rectangle_get_type ())
>-- 
>1.7.1.333.g6339f67
>

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