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"

 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;
 	GtkListStore    *model;

 	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->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);

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

 	if (text) {
 		gchar  *str;
 		gdouble text_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);

 		str = g_strdup_printf ("<i>got text in %.4f seconds, text layout in %.4f seconds</i>",
 				       text_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_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);
 	}
 }


 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;
 	GtkWidget        *hbox, *page_selector;
 	GtkWidget        *button;
 	GtkWidget        *swindow, *textview, *treeview;
 	GtkTreeSelection *selection;
 	GtkWidget        *hpaned;
 	GtkCellRenderer  *renderer;
 	gchar            *str;
 	gint              n_pages;

 	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);

 	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));

 	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_paned_add1 (GTK_PANED (hpaned), swindow);
 	gtk_widget_show (swindow);

 	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);

 	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"

	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;
	GtkListStore *model;

	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->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);

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

	if (text) {
	gchar *str;
	gdouble text_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);

	str = g_strdup_printf ("<i>got text in %.4f seconds, text layout in %.4f seconds</i>",
	text_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_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);
	}
	}


	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;
	GtkWidget hbox, page_selector;
	GtkWidget *button;
	GtkWidget swindow, textview, *treeview;
	GtkTreeSelection *selection;
	GtkWidget *hpaned;
	GtkCellRenderer *renderer;
	gchar *str;
	gint n_pages;

	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);

	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));

	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_paned_add1 (GTK_PANED (hpaned), swindow);
	gtk_widget_show (swindow);

	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);

	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;
	}