Attachment 42859 Details for Bug 33269 – Text attributes in glib using PopplerTextInfo

[patch] Text attributes in glib using PopplerTextInfo

0001-added-get_text_attributes.patch (text/plain), 9.29 KB, created by Daniel Garcia on 2011-02-02 08:44:26 UTC

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Creator: Daniel Garcia

Created: 2011-02-02 08:44:26 UTC

Size: 9.29 KB

patch

obsolete

>From eea3c11d70e27a3a5feda44a059494ad97652b55 Mon Sep 17 00:00:00 2001
>From: danigm <danigm@wadobo.com>
>Date: Tue, 25 Jan 2011 10:28:12 +0100
>Subject: [PATCH] added get_text_attributes
>
>---
> glib/poppler-page.cc                |  225 +++++++++++++++++++++++++++++++++++
> glib/poppler-page.h                 |   27 ++++
> glib/poppler.h                      |    1 +
> glib/reference/poppler-sections.txt |    1 +
> 4 files changed, 254 insertions(+), 0 deletions(-)
>
>diff --git a/glib/poppler-page.cc b/glib/poppler-page.cc
>index 064e4af..1e4bdd0 100644
>--- a/glib/poppler-page.cc
>+++ b/glib/poppler-page.cc
>@@ -1778,6 +1778,136 @@ poppler_rectangle_free (PopplerRectangle *rectangle)
>   g_slice_free (PopplerRectangle, rectangle);
> }
> 
>+/* PopplerTextInfo type */
>+
>+POPPLER_DEFINE_BOXED_TYPE (PopplerTextInfo, poppler_text_info,
>+			   poppler_text_info_copy,
>+			   poppler_text_info_free)
>+
>+/**
>+ * poppler_text_info_new:
>+ *
>+ * Creates a new #PopplerTextInfo
>+ *
>+ * Returns: a new #PopplerTextInfo with
>+ * poppler_text_info_free() to free it
>+ */
>+PopplerTextInfo *
>+poppler_text_info_new (void)
>+{
>+  PopplerTextInfo *tinfo = g_slice_new0 (PopplerTextInfo);
>+  tinfo->color = poppler_color_new ();
>+  return tinfo;
>+}
>+
>+/*
>+ * If there's a PopplerTextInfo with same attrs in array it's
>+ * returned, else, a new one is allocated and returned.
>+ */
>+static PopplerTextInfo *
>+poppler_text_info_new_from_word (GArray *array, TextWord *word)
>+{
>+  gchar *fontname;
>+  gboolean subset = FALSE;
>+  gdouble r, g, b;
>+  gint i;
>+
>+  gint tsize;
>+  gboolean tunderline;
>+  gint tred, tgreen, tblue;
>+
>+  PopplerTextInfo *tinfo=NULL, *tmptinfo=NULL;
>+
>+  fontname = word->getFontName()->getCString();
>+
>+  // check for a font subset name: capital letters followed by a '+' sign
>+  if (fontname) {
>+    gchar *tmpfontname = fontname;
>+    gint i;
>+    for (i=0; *(tmpfontname + i); i++) {
>+      if (*(tmpfontname + i) < 'A' || *(tmpfontname + i) > 'Z') {
>+        break;
>+      }
>+    }
>+    subset = i > 0 && *(tmpfontname + i) == '+';
>+  }
>+
>+  if (subset) {
>+    while (*fontname && *fontname != '+') fontname++;
>+    fontname++;
>+  }
>+
>+  // word attributes
>+  tsize = (int)(word->getFontSize());
>+  tunderline = word->isUnderlined();
>+  word->getColor (&r, &g, &b);
>+  tred = (int)(r * 65535);
>+  tgreen = (int)(g * 65535);
>+  tblue = (int)(b * 65535);
>+
>+  for (i = array->len - 1; i >= 0; i--) {
>+    tmptinfo = g_array_index (array, PopplerTextInfo*, i);
>+    if (strcmp (tmptinfo->font, fontname) ||
>+        tmptinfo->size != tsize ||
>+        tmptinfo->underline != tunderline ||
>+        tmptinfo->color->red != tred ||
>+        tmptinfo->color->green != tgreen ||
>+        tmptinfo->color->blue != tblue)
>+      continue;
>+
>+    tinfo = tmptinfo;
>+  }
>+
>+  if (tinfo)
>+    return tinfo;
>+
>+  // word attributes
>+  tinfo = poppler_text_info_new ();
>+  tinfo->font = g_strdup (fontname);
>+  tinfo->size = tsize;
>+  tinfo->underline = tunderline;
>+  tinfo->color->red = tred;
>+  tinfo->color->green = tgreen;
>+  tinfo->color->blue = tblue;
>+
>+  return tinfo;
>+}
>+
>+/**
>+ * poppler_text_info_copy:
>+ * @textinfo: a #PopplerTextInfo to copy
>+ *
>+ * Creates a copy of @textinfo
>+ *
>+ * Returns: a new allocated copy of @textinfo
>+ */
>+PopplerTextInfo *
>+poppler_text_info_copy (PopplerTextInfo *textinfo)
>+{
>+  PopplerTextInfo *tinfo = NULL;
>+  g_return_val_if_fail (textinfo != NULL, NULL);
>+
>+  tinfo = g_slice_dup (PopplerTextInfo, textinfo);
>+  tinfo->color = poppler_color_copy (textinfo->color);
>+  tinfo->font = g_strdup (textinfo->font);
>+  return tinfo;
>+}
>+
>+/**
>+ * poppler_text_info_free:
>+ * @textinfo: a #PopplerTextInfo
>+ *
>+ * Frees the given #PopplerTextInfo
>+ */
>+void
>+poppler_text_info_free (PopplerTextInfo *textinfo)
>+{
>+  poppler_color_free (textinfo->color);
>+  if (textinfo->font)
>+    g_free (textinfo->font);
>+  g_slice_free (PopplerTextInfo, textinfo);
>+}
>+
> /* PopplerColor type */
> POPPLER_DEFINE_BOXED_TYPE (PopplerColor, poppler_color, poppler_color_copy, poppler_color_free)
> 
>@@ -2203,3 +2333,98 @@ poppler_page_get_text_layout (PopplerPage       *page,
> 
>   return TRUE;
> }
>+
>+/**
>+ * poppler_page_free_text_attributes;
>+ * @list: A list of #PopplerTextInfos
>+ *
>+ * Frees a list of #PopplerTextInfos allocated by
>+ * poppler_page_get_text_attributes().
>+ **/
>+void
>+poppler_page_free_text_attributes (GArray *array)
>+{
>+  guint i, j;
>+  PopplerTextInfo *tinfo, **tinfo2;
>+
>+  if (G_UNLIKELY (array == NULL))
>+    return;
>+
>+  for (i = 0; i < array->len; i++) {
>+    tinfo = g_array_index (array, PopplerTextInfo*, i);
>+    if (tinfo) {
>+      poppler_text_info_free (tinfo);
>+
>+      // setting same tinfo next pointers to NULL
>+      for (j = i+1; j < array->len; j++) {
>+        tinfo2 = &g_array_index (array, PopplerTextInfo*, j);
>+        if (tinfo == *tinfo2)
>+          *tinfo2 = NULL;
>+      }
>+    }
>+  }
>+
>+  g_array_free (array, FALSE);
>+}
>+
>+/**
>+ * poppler_page_get_text_attributes:
>+ * @page: A #PopplerPage
>+ *
>+ * Obtains the attributes of the text as a GArray of #PopplerTextInfo
>+ *
>+ *  This array must be freed with poppler_page_free_text_attributes () when
>+ *  done.
>+ *
>+ * Return value: (element-type PopplerTextInfo) (transfer full): A #GArray of #PopplerTextInfo
>+ *
>+ * The position in the array represents an offset in the text returned by
>+ * poppler_page_get_text ()
>+ *
>+ * Since: 0.18
>+ **/
>+GArray *
>+poppler_page_get_text_attributes  (PopplerPage *page)
>+{
>+  TextPage *text;
>+  TextWordList *wordlist;
>+  TextWord *word;
>+  PopplerTextInfo *textinfo;
>+  gint i, j, offset = 0;
>+  GArray *attributes;
>+
>+  g_return_val_if_fail (POPPLER_IS_PAGE (page), NULL);
>+
>+  text = poppler_page_get_text_page (page);
>+  wordlist = text->makeWordList (gFalse);
>+
>+  if (wordlist->getLength () <= 0)
>+    {
>+      delete wordlist;
>+      return NULL;
>+    }
>+
>+  attributes = g_array_new (FALSE, FALSE, sizeof (PopplerTextInfo*));
>+
>+  // Calculating each word attributes
>+  for (i = 0; i < wordlist->getLength (); i++)
>+    {
>+      word = wordlist->get (i);
>+
>+      // each char of the word has the same attributes
>+      for (j = 0; j < word->getLength (); j++)
>+        {
>+          textinfo = poppler_text_info_new_from_word (attributes, word);
>+          g_array_insert_val (attributes, offset, textinfo);
>+          offset++;
>+        }
>+
>+      textinfo = poppler_text_info_new_from_word (attributes, word);
>+      g_array_insert_val (attributes, offset, textinfo);
>+      offset++;
>+    }
>+
>+  delete wordlist;
>+
>+  return attributes;
>+}
>diff --git a/glib/poppler-page.h b/glib/poppler-page.h
>index d40c0ee..a0cab5e 100644
>--- a/glib/poppler-page.h
>+++ b/glib/poppler-page.h
>@@ -128,6 +128,8 @@ void 		      poppler_page_get_crop_box 	 (PopplerPage        *page,
> gboolean               poppler_page_get_text_layout      (PopplerPage        *page,
>                                                           PopplerRectangle  **rectangles,
>                                                           guint              *n_rectangles);
>+GArray                *poppler_page_get_text_attributes  (PopplerPage        *page);
>+void                   poppler_page_free_text_attributes (GArray             *array);
> 
> /* A rectangle on a page, with coordinates in PDF points. */
> #define POPPLER_TYPE_RECTANGLE             (poppler_rectangle_get_type ())
>@@ -154,6 +156,31 @@ PopplerRectangle *poppler_rectangle_new      (void);
> PopplerRectangle *poppler_rectangle_copy     (PopplerRectangle *rectangle);
> void              poppler_rectangle_free     (PopplerRectangle *rectangle);
> 
>+/* A textword attributes. */
>+#define POPPLER_TYPE_TEXT_INFO             (poppler_text_info_get_type ())
>+/**
>+ * PopplerTextInfo:
>+ * @font: word font name
>+ * @size: word font size
>+ * @uniderline: if word is underlined
>+ * @color: a #PopplerColor, the word foreground color
>+ *
>+ * A #PopplerTextInfo is used to describe
>+ * a word text attriutes
>+ */
>+struct _PopplerTextInfo
>+{
>+  gchar *font;
>+  gint size;
>+  gboolean underline;
>+  PopplerColor *color;
>+};
>+
>+GType            poppler_text_info_get_type (void) G_GNUC_CONST;
>+PopplerTextInfo *poppler_text_info_new      (void);
>+PopplerTextInfo *poppler_text_info_copy     (PopplerTextInfo *textinfo);
>+void             poppler_text_info_free     (PopplerTextInfo *textinfo);
>+
> /* A color in RGB */
> #define POPPLER_TYPE_COLOR                 (poppler_color_get_type ())
> 
>diff --git a/glib/poppler.h b/glib/poppler.h
>index 008f5d8..b5574d2 100644
>--- a/glib/poppler.h
>+++ b/glib/poppler.h
>@@ -158,6 +158,7 @@ typedef struct _PopplerIndexIter           PopplerIndexIter;
> typedef struct _PopplerFontsIter           PopplerFontsIter;
> typedef struct _PopplerLayersIter          PopplerLayersIter;
> typedef struct _PopplerRectangle           PopplerRectangle;
>+typedef struct _PopplerTextInfo            PopplerTextInfo;
> typedef struct _PopplerColor               PopplerColor;
> typedef struct _PopplerLinkMapping         PopplerLinkMapping;
> typedef struct _PopplerPageTransition      PopplerPageTransition;
>diff --git a/glib/reference/poppler-sections.txt b/glib/reference/poppler-sections.txt
>index 6ad9ee2..14521e5 100644
>--- a/glib/reference/poppler-sections.txt
>+++ b/glib/reference/poppler-sections.txt
>@@ -38,6 +38,7 @@ poppler_page_get_selected_text
> poppler_page_find_text
> poppler_page_get_text
> poppler_page_get_text_layout
>+poppler_page_get_text_attributes
> poppler_page_get_link_mapping
> poppler_page_free_link_mapping
> poppler_page_get_image_mapping
>-- 
>1.7.4.rc2.258.g844d7
>

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