glib/demo/text.c - third_party/poppler - Git at Google

 /*
  * Copyright (C) 2008 Carlos Garcia Campos  <carlosgc@gnome.org>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2, or (at your option)
  * any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
  */

 #include <string.h>

 #include "text.h"
 #include "utils.h"

 enum {
 	TEXT_X1_COLUMN,
 	TEXT_Y1_COLUMN,
 	TEXT_X2_COLUMN,
 	TEXT_Y2_COLUMN,
 	TEXT_OFFSET_COLUMN,
 	TEXT_OFFPTR_COLUMN,
 	N_COLUMNS
 };

 typedef struct {
 	PopplerDocument *doc;

 	GtkWidget       *timer_label;
 	GtkTextBuffer   *buffer;
         GtkWidget       *treeview;
 	GtkListStore    *model;

         /* Text attributes */
         GList           *text_attrs;
 	GtkWidget       *font_name;
         GtkWidget       *font_size;
         GtkWidget       *is_underlined;
         GtkWidget       *text_color;

 	gint             page;
 } PgdTextDemo;

 static void
 pgd_text_free (PgdTextDemo *demo)
 {
 	if (!demo)
 		return;

 	if (demo->doc) {
 		g_object_unref (demo->doc);
 		demo->doc = NULL;
 	}

 	if (demo->buffer) {
 		g_object_unref (demo->buffer);
 		demo->buffer = NULL;
 	}

         if (demo->text_attrs) {
                 poppler_page_free_text_attributes (demo->text_attrs);
                 demo->text_attrs = NULL;
         }

 	if (demo->model) {
 		g_object_unref (demo->model);
 		demo->model = NULL;
 	}

 	g_free (demo);
 }

 static void
 pgd_text_get_text (GtkWidget   *button,
 		   PgdTextDemo *demo)
 {
 	PopplerPage      *page;
 	PopplerRectangle *recs = NULL;
 	guint             n_recs;
 	gchar            *text;
 	GTimer           *timer;
 	gint              i;

 	page = poppler_document_get_page (demo->doc, demo->page);
 	if (!page)
 		return;

 	gtk_list_store_clear (demo->model);
         if (demo->text_attrs)
                 poppler_page_free_text_attributes (demo->text_attrs);
         demo->text_attrs = NULL;

 	timer = g_timer_new ();
 	text = poppler_page_get_text (page);
 	g_timer_stop (timer);

 	if (text) {
 		gchar  *str;
 		gdouble text_elapsed, layout_elapsed;

 		text_elapsed = g_timer_elapsed (timer, NULL);

 		g_timer_start (timer);
 		poppler_page_get_text_layout (page, &recs, &n_recs);
 		g_timer_stop (timer);

                 layout_elapsed = g_timer_elapsed (timer, NULL);

                 g_timer_start (timer);
                 demo->text_attrs = poppler_page_get_text_attributes (page);
                 g_timer_stop (timer);

 		str = g_strdup_printf ("<i>got text in %.4f seconds, text layout in %.4f seconds, text attrs in %.4f seconds</i>",
 				       text_elapsed, layout_elapsed, g_timer_elapsed (timer, NULL));
 		gtk_label_set_markup (GTK_LABEL (demo->timer_label), str);
 		g_free (str);
 	} else {
 		gtk_label_set_markup (GTK_LABEL (demo->timer_label), "<i>No text found</i>");
 		n_recs = 0;
 	}

 	g_timer_destroy (timer);
 	g_object_unref (page);

 	if (text) {
 		gtk_text_buffer_set_text (demo->buffer, text, strlen (text));
 		g_free (text);
 	}

 	for (i = 0; i < n_recs; i++) {
 		GtkTreeIter iter;
 		gchar      *x1, *y1, *x2, *y2;
 		gchar      *offset;

 		x1 = g_strdup_printf ("%.2f", recs[i].x1);
 		y1 = g_strdup_printf ("%.2f", recs[i].y1);
 		x2 = g_strdup_printf ("%.2f", recs[i].x2);
 		y2 = g_strdup_printf ("%.2f", recs[i].y2);

 		offset = g_strdup_printf ("%d", i);

 		gtk_list_store_append (demo->model, &iter);
 		gtk_list_store_set (demo->model, &iter,
 				    TEXT_X1_COLUMN, x1,
 				    TEXT_Y1_COLUMN, y1,
 				    TEXT_X2_COLUMN, x2,
 				    TEXT_Y2_COLUMN, y2,
 				    TEXT_OFFSET_COLUMN, offset,
 				    TEXT_OFFPTR_COLUMN, GINT_TO_POINTER (i),
 				    -1);

 		g_free (x1);
 		g_free (y1);
 		g_free (x2);
 		g_free (y2);
 		g_free (offset);
 	}

 	g_free (recs);
 }

 static void
 pgd_text_set_text_attrs_for_offset (PgdTextDemo *demo,
                                     gint         offset)
 {
         GList *l;

         for (l = demo->text_attrs; l; l = g_list_next (l)) {
                 PopplerTextAttributes *attrs = (PopplerTextAttributes *)l->data;

                 if (offset >= attrs->start_index && offset <= attrs->end_index) {
                         gchar *str;
                         GdkPixbuf *pixbuf;

                         gtk_label_set_text (GTK_LABEL (demo->font_name), attrs->font_name);

                         str = g_strdup_printf ("%.2f", attrs->font_size);
                         gtk_label_set_text (GTK_LABEL (demo->font_size), str);
                         g_free (str);

                         gtk_label_set_text (GTK_LABEL (demo->is_underlined), attrs->is_underlined ? "Yes" : "No");

                         pixbuf = pgd_pixbuf_new_for_color (&(attrs->color));
                         gtk_image_set_from_pixbuf (GTK_IMAGE (demo->text_color), pixbuf);
                         g_object_unref (pixbuf);
                 }
         }
 }

 static void
 pgd_text_selection_changed (GtkTreeSelection *treeselection,
 			    PgdTextDemo      *demo)
 {
 	GtkTreeModel *model;
 	GtkTreeIter   iter;

 	if (gtk_tree_selection_get_selected (treeselection, &model, &iter)) {
 		gpointer    offset;
 		GtkTextIter begin_iter, end_iter;

 		gtk_tree_model_get (model, &iter,
 				    TEXT_OFFPTR_COLUMN, &offset,
 				    -1);

 		gtk_text_buffer_get_iter_at_offset (demo->buffer, &begin_iter, GPOINTER_TO_INT (offset));
 		end_iter = begin_iter;
 		gtk_text_iter_forward_char (&end_iter);
 		gtk_text_buffer_select_range (demo->buffer, &begin_iter, &end_iter);

                 pgd_text_set_text_attrs_for_offset (demo, GPOINTER_TO_INT (offset));
 	}
 }

 static void
 pgd_text_buffer_selection_changed (GtkTextBuffer *buffer,
                                    GParamSpec    *pspec,
                                    GtkWidget    *textview)
 {
         gtk_widget_set_has_tooltip (textview, gtk_text_buffer_get_has_selection (buffer));
 }

 static gboolean
 pgd_text_view_query_tooltip (GtkTextView   *textview,
                              gint           x,
                              gint           y,
                              gboolean       keyboard_tip,
                              GtkTooltip    *tooltip,
                              PgdTextDemo   *demo)
 {
         GtkTreeModel     *model;
         GtkTreeIter       iter;
         GtkTreeSelection *selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (demo->treeview));

         if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
                 PopplerPage *page;
                 gchar *x1, *y1, *x2, *y2;
                 PopplerRectangle rect;
                 gchar *text;

                 gtk_tree_model_get (model, &iter,
                                     TEXT_X1_COLUMN, &x1,
                                     TEXT_Y1_COLUMN, &y1,
                                     TEXT_X2_COLUMN, &x2,
                                     TEXT_Y2_COLUMN, &y2,
                                     -1);

                 rect.x1 = g_strtod (x1, NULL);
                 rect.y1 = g_strtod (y1, NULL);
                 rect.x2 = g_strtod (x2, NULL);
                 rect.y2 = g_strtod (y2, NULL);

                 g_free (x1);
                 g_free (y1);
                 g_free (x2);
                 g_free (y2);

                 page = page = poppler_document_get_page (demo->doc, demo->page);
                 text = poppler_page_get_selected_text (page, POPPLER_SELECTION_GLYPH, &rect);
                 gtk_tooltip_set_text (tooltip, text);
                 g_free (text);
                 g_object_unref (page);
         }

 }


 static void
 pgd_text_page_selector_value_changed (GtkSpinButton *spinbutton,
 				      PgdTextDemo   *demo)
 {
 	demo->page = (gint)gtk_spin_button_get_value (spinbutton) - 1;
 }

 GtkWidget *
 pgd_text_create_widget (PopplerDocument *document)
 {
 	PgdTextDemo      *demo;
 	GtkWidget        *label;
 	GtkWidget        *vbox, *vbox2;
 	GtkWidget	 *textinfo;
 	GtkWidget        *hbox, *page_selector;
 	GtkWidget        *button;
 	GtkWidget        *swindow, *textview, *treeview;
 	GtkTreeSelection *selection;
         GtkWidget        *frame, *alignment, *table;
 	GtkWidget        *hpaned;
 	GtkCellRenderer  *renderer;
 	gchar            *str;
 	gint              n_pages;
         gint              row = 0;

 	demo = g_new0 (PgdTextDemo, 1);

 	demo->doc = g_object_ref (document);

 	n_pages = poppler_document_get_n_pages (document);

 	vbox = gtk_vbox_new (FALSE, 12);
 	vbox2 = gtk_vbox_new (FALSE, 12);
 	textinfo = gtk_label_new ("TextInfo");

 	hbox = gtk_hbox_new (FALSE, 6);

 	label = gtk_label_new ("Page:");
 	gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, TRUE, 0);
 	gtk_widget_show (label);

 	page_selector = gtk_spin_button_new_with_range (1, n_pages, 1);
 	g_signal_connect (G_OBJECT (page_selector), "value-changed",
 			  G_CALLBACK (pgd_text_page_selector_value_changed),
 			  (gpointer)demo);
 	gtk_box_pack_start (GTK_BOX (hbox), page_selector, FALSE, TRUE, 0);
 	gtk_widget_show (page_selector);

 	str = g_strdup_printf ("of %d", n_pages);
 	label = gtk_label_new (str);
 	gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, TRUE, 0);
 	gtk_widget_show (label);
 	g_free (str);

 	button = gtk_button_new_with_label ("Get Text");
 	g_signal_connect (G_OBJECT (button), "clicked",
 			  G_CALLBACK (pgd_text_get_text),
 			  (gpointer)demo);
 	gtk_box_pack_end (GTK_BOX (hbox), button, FALSE, FALSE, 0);
 	gtk_widget_show (button);

 	gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, TRUE, 0);
 	gtk_widget_show (hbox);

 	demo->timer_label = gtk_label_new (NULL);
 	gtk_label_set_markup (GTK_LABEL (demo->timer_label), "<i>No text found</i>");
 	g_object_set (G_OBJECT (demo->timer_label), "xalign", 1.0, NULL);
 	gtk_box_pack_start (GTK_BOX (vbox), demo->timer_label, FALSE, TRUE, 0);
 	gtk_widget_show (demo->timer_label);

 	hpaned = gtk_hpaned_new ();
 	gtk_paned_set_position (GTK_PANED (hpaned), 300);

 	swindow = gtk_scrolled_window_new (NULL, NULL);
 	gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
 					GTK_POLICY_AUTOMATIC,
 					GTK_POLICY_AUTOMATIC);

 	demo->model = gtk_list_store_new (N_COLUMNS,
 					  G_TYPE_STRING,
 					  G_TYPE_STRING, G_TYPE_STRING,
 					  G_TYPE_STRING, G_TYPE_STRING,
 					  G_TYPE_POINTER);
 	treeview = gtk_tree_view_new_with_model (GTK_TREE_MODEL (demo->model));
         demo->treeview = treeview;

 	renderer = gtk_cell_renderer_text_new ();
 	gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
 						     TEXT_X1_COLUMN, "X1",
 						     renderer,
 						     "text", TEXT_X1_COLUMN,
 						     NULL);
 	renderer = gtk_cell_renderer_text_new ();
 	gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
 						     TEXT_Y1_COLUMN, "Y1",
 						     renderer,
 						     "text", TEXT_Y1_COLUMN,
 						     NULL);
 	renderer = gtk_cell_renderer_text_new ();
 	gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
 						     TEXT_X2_COLUMN, "X2",
 						     renderer,
 						     "text", TEXT_X2_COLUMN,
 						     NULL);
 	renderer = gtk_cell_renderer_text_new ();
 	gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
 						     TEXT_Y2_COLUMN, "Y2",
 						     renderer,
 						     "text", TEXT_Y2_COLUMN,
 						     NULL);

 	renderer = gtk_cell_renderer_text_new ();
 	gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
 						     TEXT_OFFSET_COLUMN, "Offset",
 						     renderer,
 						     "text", TEXT_OFFSET_COLUMN,
 						     NULL);

 	selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (treeview));
 	g_signal_connect (selection, "changed",
 			  G_CALLBACK (pgd_text_selection_changed),
 			  (gpointer) demo);

 	gtk_container_add (GTK_CONTAINER (swindow), treeview);
 	gtk_widget_show (treeview);

 	gtk_container_add (GTK_CONTAINER (vbox2), swindow);
         gtk_widget_show (swindow);

         /* Text attributes */
         frame = gtk_frame_new (NULL);
         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_NONE);
         label = gtk_label_new (NULL);
         gtk_label_set_markup (GTK_LABEL (label), "<b>Text Attributes</b>");
         gtk_frame_set_label_widget (GTK_FRAME (frame), label);
         gtk_widget_show (label);

         alignment = gtk_alignment_new (0.5, 0.5, 1, 1);
         gtk_alignment_set_padding (GTK_ALIGNMENT (alignment), 5, 5, 12, 5);
         gtk_container_add (GTK_CONTAINER (frame), alignment);
         gtk_widget_show (alignment);

         table = gtk_table_new (4, 2, FALSE);
         gtk_table_set_col_spacings (GTK_TABLE (table), 6);
         gtk_table_set_row_spacings (GTK_TABLE (table), 6);

         demo->font_name = gtk_label_new (NULL);
         pgd_table_add_property_with_custom_widget (GTK_TABLE (table), "<b>Font Name:</b>", demo->font_name, &row);
         demo->font_size = gtk_label_new (NULL);
         pgd_table_add_property_with_custom_widget (GTK_TABLE (table), "<b>Font Size:</b>", demo->font_size, &row);
         demo->is_underlined = gtk_label_new (NULL);
         pgd_table_add_property_with_custom_widget (GTK_TABLE (table), "<b>Underlined:</b>", demo->is_underlined, &row);
         demo->text_color = gtk_image_new ();
         pgd_table_add_property_with_custom_widget (GTK_TABLE (table), "<b>Color:</b>", demo->text_color, &row);

         gtk_container_add (GTK_CONTAINER (alignment), table);
         gtk_widget_show (table);

 	gtk_box_pack_start (GTK_BOX (vbox2), frame, FALSE, FALSE, 12);
         gtk_widget_show (frame);
 	gtk_paned_add1 (GTK_PANED (hpaned), vbox2);
 	gtk_widget_show (vbox2);

 	swindow = gtk_scrolled_window_new (NULL, NULL);
 	gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
 					GTK_POLICY_AUTOMATIC,
 					GTK_POLICY_AUTOMATIC);

 	demo->buffer = gtk_text_buffer_new (NULL);
 	textview = gtk_text_view_new_with_buffer (demo->buffer);
         g_signal_connect (textview, "query-tooltip",
                           G_CALLBACK (pgd_text_view_query_tooltip),
                           demo);
         g_signal_connect (demo->buffer, "notify::has-selection",
                           G_CALLBACK (pgd_text_buffer_selection_changed),
                           textview);

 	gtk_container_add (GTK_CONTAINER (swindow), textview);
 	gtk_widget_show (textview);

 	gtk_paned_add2 (GTK_PANED (hpaned), swindow);
 	gtk_widget_show (swindow);

 	gtk_box_pack_start (GTK_BOX (vbox), hpaned, TRUE, TRUE, 0);
 	gtk_widget_show (hpaned);

 	g_object_weak_ref (G_OBJECT (vbox),
 			   (GWeakNotify)pgd_text_free,
 			   demo);

 	return vbox;
 }
	/*
	* Copyright (C) 2008 Carlos Garcia Campos <carlosgc@gnome.org>
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2, or (at your option)
	* any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
	*/

	#include <string.h>

	#include "text.h"
	#include "utils.h"

	enum {
	TEXT_X1_COLUMN,
	TEXT_Y1_COLUMN,
	TEXT_X2_COLUMN,
	TEXT_Y2_COLUMN,
	TEXT_OFFSET_COLUMN,
	TEXT_OFFPTR_COLUMN,
	N_COLUMNS
	};

	typedef struct {
	PopplerDocument *doc;

	GtkWidget *timer_label;
	GtkTextBuffer *buffer;
	GtkWidget *treeview;
	GtkListStore *model;

	/* Text attributes */
	GList *text_attrs;
	GtkWidget *font_name;
	GtkWidget *font_size;
	GtkWidget *is_underlined;
	GtkWidget *text_color;

	gint page;
	} PgdTextDemo;

	static void
	pgd_text_free (PgdTextDemo *demo)
	{
	if (!demo)
	return;

	if (demo->doc) {
	g_object_unref (demo->doc);
	demo->doc = NULL;
	}

	if (demo->buffer) {
	g_object_unref (demo->buffer);
	demo->buffer = NULL;
	}

	if (demo->text_attrs) {
	poppler_page_free_text_attributes (demo->text_attrs);
	demo->text_attrs = NULL;
	}

	if (demo->model) {
	g_object_unref (demo->model);
	demo->model = NULL;
	}

	g_free (demo);
	}

	static void
	pgd_text_get_text (GtkWidget *button,
	PgdTextDemo *demo)
	{
	PopplerPage *page;
	PopplerRectangle *recs = NULL;
	guint n_recs;
	gchar *text;
	GTimer *timer;
	gint i;

	page = poppler_document_get_page (demo->doc, demo->page);
	if (!page)
	return;

	gtk_list_store_clear (demo->model);
	if (demo->text_attrs)
	poppler_page_free_text_attributes (demo->text_attrs);
	demo->text_attrs = NULL;

	timer = g_timer_new ();
	text = poppler_page_get_text (page);
	g_timer_stop (timer);

	if (text) {
	gchar *str;
	gdouble text_elapsed, layout_elapsed;

	text_elapsed = g_timer_elapsed (timer, NULL);

	g_timer_start (timer);
	poppler_page_get_text_layout (page, &recs, &n_recs);
	g_timer_stop (timer);

	layout_elapsed = g_timer_elapsed (timer, NULL);

	g_timer_start (timer);
	demo->text_attrs = poppler_page_get_text_attributes (page);
	g_timer_stop (timer);

	str = g_strdup_printf ("<i>got text in %.4f seconds, text layout in %.4f seconds, text attrs in %.4f seconds</i>",
	text_elapsed, layout_elapsed, g_timer_elapsed (timer, NULL));
	gtk_label_set_markup (GTK_LABEL (demo->timer_label), str);
	g_free (str);
	} else {
	gtk_label_set_markup (GTK_LABEL (demo->timer_label), "<i>No text found</i>");
	n_recs = 0;
	}

	g_timer_destroy (timer);
	g_object_unref (page);

	if (text) {
	gtk_text_buffer_set_text (demo->buffer, text, strlen (text));
	g_free (text);
	}

	for (i = 0; i < n_recs; i++) {
	GtkTreeIter iter;
	gchar x1, y1, x2, y2;
	gchar *offset;

	x1 = g_strdup_printf ("%.2f", recs[i].x1);
	y1 = g_strdup_printf ("%.2f", recs[i].y1);
	x2 = g_strdup_printf ("%.2f", recs[i].x2);
	y2 = g_strdup_printf ("%.2f", recs[i].y2);

	offset = g_strdup_printf ("%d", i);

	gtk_list_store_append (demo->model, &iter);
	gtk_list_store_set (demo->model, &iter,
	TEXT_X1_COLUMN, x1,
	TEXT_Y1_COLUMN, y1,
	TEXT_X2_COLUMN, x2,
	TEXT_Y2_COLUMN, y2,
	TEXT_OFFSET_COLUMN, offset,
	TEXT_OFFPTR_COLUMN, GINT_TO_POINTER (i),
	-1);

	g_free (x1);
	g_free (y1);
	g_free (x2);
	g_free (y2);
	g_free (offset);
	}

	g_free (recs);
	}

	static void
	pgd_text_set_text_attrs_for_offset (PgdTextDemo *demo,
	gint offset)
	{
	GList *l;

	for (l = demo->text_attrs; l; l = g_list_next (l)) {
	PopplerTextAttributes attrs = (PopplerTextAttributes )l->data;

	if (offset >= attrs->start_index && offset <= attrs->end_index) {
	gchar *str;
	GdkPixbuf *pixbuf;

	gtk_label_set_text (GTK_LABEL (demo->font_name), attrs->font_name);

	str = g_strdup_printf ("%.2f", attrs->font_size);
	gtk_label_set_text (GTK_LABEL (demo->font_size), str);
	g_free (str);

	gtk_label_set_text (GTK_LABEL (demo->is_underlined), attrs->is_underlined ? "Yes" : "No");

	pixbuf = pgd_pixbuf_new_for_color (&(attrs->color));
	gtk_image_set_from_pixbuf (GTK_IMAGE (demo->text_color), pixbuf);
	g_object_unref (pixbuf);
	}
	}
	}

	static void
	pgd_text_selection_changed (GtkTreeSelection *treeselection,
	PgdTextDemo *demo)
	{
	GtkTreeModel *model;
	GtkTreeIter iter;

	if (gtk_tree_selection_get_selected (treeselection, &model, &iter)) {
	gpointer offset;
	GtkTextIter begin_iter, end_iter;

	gtk_tree_model_get (model, &iter,
	TEXT_OFFPTR_COLUMN, &offset,
	-1);

	gtk_text_buffer_get_iter_at_offset (demo->buffer, &begin_iter, GPOINTER_TO_INT (offset));
	end_iter = begin_iter;
	gtk_text_iter_forward_char (&end_iter);
	gtk_text_buffer_select_range (demo->buffer, &begin_iter, &end_iter);

	pgd_text_set_text_attrs_for_offset (demo, GPOINTER_TO_INT (offset));
	}
	}

	static void
	pgd_text_buffer_selection_changed (GtkTextBuffer *buffer,
	GParamSpec *pspec,
	GtkWidget *textview)
	{
	gtk_widget_set_has_tooltip (textview, gtk_text_buffer_get_has_selection (buffer));
	}

	static gboolean
	pgd_text_view_query_tooltip (GtkTextView *textview,
	gint x,
	gint y,
	gboolean keyboard_tip,
	GtkTooltip *tooltip,
	PgdTextDemo *demo)
	{
	GtkTreeModel *model;
	GtkTreeIter iter;
	GtkTreeSelection *selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (demo->treeview));

	if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
	PopplerPage *page;
	gchar x1, y1, x2, y2;
	PopplerRectangle rect;
	gchar *text;

	gtk_tree_model_get (model, &iter,
	TEXT_X1_COLUMN, &x1,
	TEXT_Y1_COLUMN, &y1,
	TEXT_X2_COLUMN, &x2,
	TEXT_Y2_COLUMN, &y2,
	-1);

	rect.x1 = g_strtod (x1, NULL);
	rect.y1 = g_strtod (y1, NULL);
	rect.x2 = g_strtod (x2, NULL);
	rect.y2 = g_strtod (y2, NULL);

	g_free (x1);
	g_free (y1);
	g_free (x2);
	g_free (y2);

	page = page = poppler_document_get_page (demo->doc, demo->page);
	text = poppler_page_get_selected_text (page, POPPLER_SELECTION_GLYPH, &rect);
	gtk_tooltip_set_text (tooltip, text);
	g_free (text);
	g_object_unref (page);
	}

	}


	static void
	pgd_text_page_selector_value_changed (GtkSpinButton *spinbutton,
	PgdTextDemo *demo)
	{
	demo->page = (gint)gtk_spin_button_get_value (spinbutton) - 1;
	}

	GtkWidget *
	pgd_text_create_widget (PopplerDocument *document)
	{
	PgdTextDemo *demo;
	GtkWidget *label;
	GtkWidget vbox, vbox2;
	GtkWidget *textinfo;
	GtkWidget hbox, page_selector;
	GtkWidget *button;
	GtkWidget swindow, textview, *treeview;
	GtkTreeSelection *selection;
	GtkWidget frame, alignment, *table;
	GtkWidget *hpaned;
	GtkCellRenderer *renderer;
	gchar *str;
	gint n_pages;
	gint row = 0;

	demo = g_new0 (PgdTextDemo, 1);

	demo->doc = g_object_ref (document);

	n_pages = poppler_document_get_n_pages (document);

	vbox = gtk_vbox_new (FALSE, 12);
	vbox2 = gtk_vbox_new (FALSE, 12);
	textinfo = gtk_label_new ("TextInfo");

	hbox = gtk_hbox_new (FALSE, 6);

	label = gtk_label_new ("Page:");
	gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, TRUE, 0);
	gtk_widget_show (label);

	page_selector = gtk_spin_button_new_with_range (1, n_pages, 1);
	g_signal_connect (G_OBJECT (page_selector), "value-changed",
	G_CALLBACK (pgd_text_page_selector_value_changed),
	(gpointer)demo);
	gtk_box_pack_start (GTK_BOX (hbox), page_selector, FALSE, TRUE, 0);
	gtk_widget_show (page_selector);

	str = g_strdup_printf ("of %d", n_pages);
	label = gtk_label_new (str);
	gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, TRUE, 0);
	gtk_widget_show (label);
	g_free (str);

	button = gtk_button_new_with_label ("Get Text");
	g_signal_connect (G_OBJECT (button), "clicked",
	G_CALLBACK (pgd_text_get_text),
	(gpointer)demo);
	gtk_box_pack_end (GTK_BOX (hbox), button, FALSE, FALSE, 0);
	gtk_widget_show (button);

	gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, TRUE, 0);
	gtk_widget_show (hbox);

	demo->timer_label = gtk_label_new (NULL);
	gtk_label_set_markup (GTK_LABEL (demo->timer_label), "<i>No text found</i>");
	g_object_set (G_OBJECT (demo->timer_label), "xalign", 1.0, NULL);
	gtk_box_pack_start (GTK_BOX (vbox), demo->timer_label, FALSE, TRUE, 0);
	gtk_widget_show (demo->timer_label);

	hpaned = gtk_hpaned_new ();
	gtk_paned_set_position (GTK_PANED (hpaned), 300);

	swindow = gtk_scrolled_window_new (NULL, NULL);
	gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
	GTK_POLICY_AUTOMATIC,
	GTK_POLICY_AUTOMATIC);

	demo->model = gtk_list_store_new (N_COLUMNS,
	G_TYPE_STRING,
	G_TYPE_STRING, G_TYPE_STRING,
	G_TYPE_STRING, G_TYPE_STRING,
	G_TYPE_POINTER);
	treeview = gtk_tree_view_new_with_model (GTK_TREE_MODEL (demo->model));
	demo->treeview = treeview;

	renderer = gtk_cell_renderer_text_new ();
	gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
	TEXT_X1_COLUMN, "X1",
	renderer,
	"text", TEXT_X1_COLUMN,
	NULL);
	renderer = gtk_cell_renderer_text_new ();
	gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
	TEXT_Y1_COLUMN, "Y1",
	renderer,
	"text", TEXT_Y1_COLUMN,
	NULL);
	renderer = gtk_cell_renderer_text_new ();
	gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
	TEXT_X2_COLUMN, "X2",
	renderer,
	"text", TEXT_X2_COLUMN,
	NULL);
	renderer = gtk_cell_renderer_text_new ();
	gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
	TEXT_Y2_COLUMN, "Y2",
	renderer,
	"text", TEXT_Y2_COLUMN,
	NULL);

	renderer = gtk_cell_renderer_text_new ();
	gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (treeview),
	TEXT_OFFSET_COLUMN, "Offset",
	renderer,
	"text", TEXT_OFFSET_COLUMN,
	NULL);

	selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (treeview));
	g_signal_connect (selection, "changed",
	G_CALLBACK (pgd_text_selection_changed),
	(gpointer) demo);

	gtk_container_add (GTK_CONTAINER (swindow), treeview);
	gtk_widget_show (treeview);

	gtk_container_add (GTK_CONTAINER (vbox2), swindow);
	gtk_widget_show (swindow);

	/* Text attributes */
	frame = gtk_frame_new (NULL);
	gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_NONE);
	label = gtk_label_new (NULL);
	gtk_label_set_markup (GTK_LABEL (label), "<b>Text Attributes</b>");
	gtk_frame_set_label_widget (GTK_FRAME (frame), label);
	gtk_widget_show (label);

	alignment = gtk_alignment_new (0.5, 0.5, 1, 1);
	gtk_alignment_set_padding (GTK_ALIGNMENT (alignment), 5, 5, 12, 5);
	gtk_container_add (GTK_CONTAINER (frame), alignment);
	gtk_widget_show (alignment);

	table = gtk_table_new (4, 2, FALSE);
	gtk_table_set_col_spacings (GTK_TABLE (table), 6);
	gtk_table_set_row_spacings (GTK_TABLE (table), 6);

	demo->font_name = gtk_label_new (NULL);
	pgd_table_add_property_with_custom_widget (GTK_TABLE (table), "<b>Font Name:</b>", demo->font_name, &row);
	demo->font_size = gtk_label_new (NULL);
	pgd_table_add_property_with_custom_widget (GTK_TABLE (table), "<b>Font Size:</b>", demo->font_size, &row);
	demo->is_underlined = gtk_label_new (NULL);
	pgd_table_add_property_with_custom_widget (GTK_TABLE (table), "<b>Underlined:</b>", demo->is_underlined, &row);
	demo->text_color = gtk_image_new ();
	pgd_table_add_property_with_custom_widget (GTK_TABLE (table), "<b>Color:</b>", demo->text_color, &row);

	gtk_container_add (GTK_CONTAINER (alignment), table);
	gtk_widget_show (table);

	gtk_box_pack_start (GTK_BOX (vbox2), frame, FALSE, FALSE, 12);
	gtk_widget_show (frame);
	gtk_paned_add1 (GTK_PANED (hpaned), vbox2);
	gtk_widget_show (vbox2);

	swindow = gtk_scrolled_window_new (NULL, NULL);
	gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
	GTK_POLICY_AUTOMATIC,
	GTK_POLICY_AUTOMATIC);

	demo->buffer = gtk_text_buffer_new (NULL);
	textview = gtk_text_view_new_with_buffer (demo->buffer);
	g_signal_connect (textview, "query-tooltip",
	G_CALLBACK (pgd_text_view_query_tooltip),
	demo);
	g_signal_connect (demo->buffer, "notify::has-selection",
	G_CALLBACK (pgd_text_buffer_selection_changed),
	textview);

	gtk_container_add (GTK_CONTAINER (swindow), textview);
	gtk_widget_show (textview);

	gtk_paned_add2 (GTK_PANED (hpaned), swindow);
	gtk_widget_show (swindow);

	gtk_box_pack_start (GTK_BOX (vbox), hpaned, TRUE, TRUE, 0);
	gtk_widget_show (hpaned);

	g_object_weak_ref (G_OBJECT (vbox),
	(GWeakNotify)pgd_text_free,
	demo);

	return vbox;
	}