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

 /*
  * Copyright (C) 2007 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 "config.h"

 #include <gtk/gtk.h>

 #include "page.h"
 #include "utils.h"

 typedef struct
 {
     PopplerDocument *doc;

     GtkWidget *index;
     GtkWidget *label;
     GtkWidget *size;
     GtkWidget *duration;
     GtkWidget *thumbnail;
     GtkWidget *thumbnail_size;

     gint page;
 } PgdPageDemo;

 static void pgd_page_free(PgdPageDemo *demo)
 {
     if (!demo) {
         return;
     }

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

     g_free(demo);
 }

 #ifndef POPPLER_WITH_GDK
 static void image_set_from_surface(GtkImage *gtkimage, cairo_surface_t *surface)
 {
     GdkPixbuf *pixbuf;
     cairo_surface_t *image;
     cairo_t *cr;
     gboolean has_alpha;
     gint width, height;
     cairo_format_t surface_format;
     gint pixbuf_n_channels;
     gint pixbuf_rowstride;
     guchar *pixbuf_pixels;
     gint x, y;

     width = cairo_image_surface_get_width(surface);
     height = cairo_image_surface_get_height(surface);

     surface_format = cairo_image_surface_get_format(surface);
     has_alpha = (surface_format == CAIRO_FORMAT_ARGB32);

     pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
     pixbuf_n_channels = gdk_pixbuf_get_n_channels(pixbuf);
     pixbuf_rowstride = gdk_pixbuf_get_rowstride(pixbuf);
     pixbuf_pixels = gdk_pixbuf_get_pixels(pixbuf);

     image = cairo_image_surface_create_for_data(pixbuf_pixels, surface_format, width, height, pixbuf_rowstride);
     cr = cairo_create(image);
     cairo_set_source_surface(cr, surface, 0, 0);

     if (has_alpha) {
         cairo_mask_surface(cr, surface, 0, 0);
     } else {
         cairo_paint(cr);
     }

     cairo_destroy(cr);
     cairo_surface_destroy(image);

     for (y = 0; y < height; y++) {
         guchar *p = pixbuf_pixels + y * pixbuf_rowstride;

         for (x = 0; x < width; x++) {
             guchar tmp;

 #    if G_BYTE_ORDER == G_LITTLE_ENDIAN
             tmp = p[0];
             p[0] = p[2];
             p[2] = tmp;
             p[3] = (has_alpha) ? p[3] : 0xff;
 #    else
             tmp = p[0];
             p[0] = (has_alpha) ? p[3] : 0xff;
             p[3] = p[2];
             p[2] = p[1];
             p[1] = tmp;
 #    endif
             p += pixbuf_n_channels;
         }
     }

     gtk_image_set_from_pixbuf(gtkimage, pixbuf);
     g_object_unref(pixbuf);
 }
 #endif /* !POPPLER_WITH_GDK */

 static void pgd_page_set_page(PgdPageDemo *demo, PopplerPage *page)
 {
 #ifdef POPPLER_WITH_GDK
     GdkPixbuf *thumbnail;
 #else
     cairo_surface_t *thumbnail;
 #endif
     gchar *str;

     str = page ? g_strdup_printf("%d", poppler_page_get_index(page)) : NULL;
     gtk_label_set_text(GTK_LABEL(demo->index), str);
     g_free(str);

     if (page) {
         str = poppler_page_get_label(page);
         gtk_label_set_text(GTK_LABEL(demo->label), str);
         g_free(str);
     } else {
         gtk_label_set_text(GTK_LABEL(demo->label), NULL);
     }

     if (page) {
         gdouble width, height;

         poppler_page_get_size(page, &width, &height);
         str = g_strdup_printf("%.2f x %.2f", width, height);
         gtk_label_set_text(GTK_LABEL(demo->size), str);
         g_free(str);
     } else {
         gtk_label_set_text(GTK_LABEL(demo->size), NULL);
     }

     str = page ? g_strdup_printf("%.2f seconds", poppler_page_get_duration(page)) : NULL;
     gtk_label_set_text(GTK_LABEL(demo->duration), str);
     g_free(str);

 #ifdef POPPLER_WITH_GDK
     thumbnail = page ? poppler_page_get_thumbnail_pixbuf(page) : NULL;
 #else
     thumbnail = page ? poppler_page_get_thumbnail(page) : NULL;
 #endif
     if (thumbnail) {
         gint width, height;

         poppler_page_get_thumbnail_size(page, &width, &height);
         str = g_strdup_printf("%d x %d", width, height);
         gtk_label_set_text(GTK_LABEL(demo->thumbnail_size), str);
         g_free(str);

 #ifdef POPPLER_WITH_GDK
         gtk_image_set_from_pixbuf(GTK_IMAGE(demo->thumbnail), thumbnail);
         g_object_unref(thumbnail);
 #else
         image_set_from_surface(GTK_IMAGE(demo->thumbnail), thumbnail);
         cairo_surface_destroy(thumbnail);
 #endif
     } else {
         str = g_strdup("<i>No thumbnail found</i>");
         gtk_label_set_markup(GTK_LABEL(demo->thumbnail_size), str);
         g_free(str);

         gtk_image_set_from_icon_name(GTK_IMAGE(demo->thumbnail), "image-missing", GTK_ICON_SIZE_DIALOG);
     }
 }

 static void pgd_page_get_info(GtkWidget *button, PgdPageDemo *demo)
 {
     PopplerPage *page;

     page = poppler_document_get_page(demo->doc, demo->page);
     pgd_page_set_page(demo, page);
     g_object_unref(page);
 }

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

 GtkWidget *pgd_page_create_widget(PopplerDocument *document)
 {
     PgdPageDemo *demo;
     GtkWidget *vbox;
     GtkWidget *hbox, *page_selector;
     GtkWidget *button;
     GtkWidget *frame;
     GtkWidget *table;
     GtkWidget *label;
     GtkWidget *thumnail_box;
     gchar *str;
     gint n_pages;
     gint row = 0;

     demo = g_new0(PgdPageDemo, 1);

     demo->doc = g_object_ref(document);

     n_pages = poppler_document_get_n_pages(document);

     vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 12);

     hbox = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 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_page_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 Info");
     g_signal_connect(G_OBJECT(button), "clicked", G_CALLBACK(pgd_page_get_info), (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);

     hbox = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 6);

     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>Page Properties</b>");
     gtk_frame_set_label_widget(GTK_FRAME(frame), label);
     gtk_widget_show(label);

     table = gtk_grid_new();
     gtk_widget_set_margin_top(table, 5);
     gtk_widget_set_margin_bottom(table, 5);
 #if GTK_CHECK_VERSION(3, 12, 0)
     gtk_widget_set_margin_start(table, 12);
     gtk_widget_set_margin_end(table, 5);
 #else
     gtk_widget_set_margin_left(table, 12);
     gtk_widget_set_margin_right(table, 5);
 #endif
     gtk_grid_set_column_spacing(GTK_GRID(table), 6);
     gtk_grid_set_row_spacing(GTK_GRID(table), 6);

     pgd_table_add_property_with_value_widget(GTK_GRID(table), "<b>Page Index:</b>", &(demo->index), NULL, &row);
     pgd_table_add_property_with_value_widget(GTK_GRID(table), "<b>Page Label:</b>", &(demo->label), NULL, &row);
     pgd_table_add_property_with_value_widget(GTK_GRID(table), "<b>Page Size:</b>", &(demo->size), NULL, &row);
     pgd_table_add_property_with_value_widget(GTK_GRID(table), "<b>Page Duration:</b>", &(demo->duration), NULL, &row);

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

     gtk_box_pack_start(GTK_BOX(hbox), frame, TRUE, TRUE, 0);
     gtk_widget_show(frame);

     frame = gtk_frame_new(NULL);
     gtk_frame_set_shadow_type(GTK_FRAME(frame), GTK_SHADOW_NONE);
     gtk_frame_set_label_align(GTK_FRAME(frame), 0.5, 0.5);
     label = gtk_label_new(NULL);
     gtk_label_set_markup(GTK_LABEL(label), "<b>Page Thumbnail</b>");
     gtk_frame_set_label_widget(GTK_FRAME(frame), label);
     gtk_widget_show(label);

     thumnail_box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 6);
     gtk_widget_set_margin_top(thumnail_box, 5);
     gtk_widget_set_margin_bottom(thumnail_box, 5);
 #if GTK_CHECK_VERSION(3, 12, 0)
     gtk_widget_set_margin_start(thumnail_box, 12);
     gtk_widget_set_margin_end(thumnail_box, 5);
 #else
     gtk_widget_set_margin_left(thumnail_box, 12);
     gtk_widget_set_margin_right(thumnail_box, 5);
 #endif

     demo->thumbnail = gtk_image_new();
     gtk_box_pack_start(GTK_BOX(thumnail_box), demo->thumbnail, TRUE, TRUE, 0);
     gtk_widget_show(demo->thumbnail);

     demo->thumbnail_size = gtk_label_new(NULL);
     g_object_set(G_OBJECT(demo->thumbnail_size), "xalign", 0.5, NULL);
     gtk_box_pack_start(GTK_BOX(thumnail_box), demo->thumbnail_size, TRUE, TRUE, 0);
     gtk_widget_show(demo->thumbnail_size);

     gtk_container_add(GTK_CONTAINER(frame), thumnail_box);
     gtk_widget_show(thumnail_box);

     gtk_box_pack_start(GTK_BOX(hbox), frame, TRUE, TRUE, 0);
     gtk_widget_show(frame);

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

     g_object_weak_ref(G_OBJECT(vbox), (GWeakNotify)pgd_page_free, (gpointer)demo);

     return vbox;
 }
	/*
	* Copyright (C) 2007 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 "config.h"

	#include <gtk/gtk.h>

	#include "page.h"
	#include "utils.h"

	typedef struct
	{
	PopplerDocument *doc;

	GtkWidget *index;
	GtkWidget *label;
	GtkWidget *size;
	GtkWidget *duration;
	GtkWidget *thumbnail;
	GtkWidget *thumbnail_size;

	gint page;
	} PgdPageDemo;

	static void pgd_page_free(PgdPageDemo *demo)
	{
	if (!demo) {
	return;
	}

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

	g_free(demo);
	}

	#ifndef POPPLER_WITH_GDK
	static void image_set_from_surface(GtkImage gtkimage, cairo_surface_t surface)
	{
	GdkPixbuf *pixbuf;
	cairo_surface_t *image;
	cairo_t *cr;
	gboolean has_alpha;
	gint width, height;
	cairo_format_t surface_format;
	gint pixbuf_n_channels;
	gint pixbuf_rowstride;
	guchar *pixbuf_pixels;
	gint x, y;

	width = cairo_image_surface_get_width(surface);
	height = cairo_image_surface_get_height(surface);

	surface_format = cairo_image_surface_get_format(surface);
	has_alpha = (surface_format == CAIRO_FORMAT_ARGB32);

	pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
	pixbuf_n_channels = gdk_pixbuf_get_n_channels(pixbuf);
	pixbuf_rowstride = gdk_pixbuf_get_rowstride(pixbuf);
	pixbuf_pixels = gdk_pixbuf_get_pixels(pixbuf);

	image = cairo_image_surface_create_for_data(pixbuf_pixels, surface_format, width, height, pixbuf_rowstride);
	cr = cairo_create(image);
	cairo_set_source_surface(cr, surface, 0, 0);

	if (has_alpha) {
	cairo_mask_surface(cr, surface, 0, 0);
	} else {
	cairo_paint(cr);
	}

	cairo_destroy(cr);
	cairo_surface_destroy(image);

	for (y = 0; y < height; y++) {
	guchar p = pixbuf_pixels + y pixbuf_rowstride;

	for (x = 0; x < width; x++) {
	guchar tmp;

	# if G_BYTE_ORDER == G_LITTLE_ENDIAN
	tmp = p[0];
	p[0] = p[2];
	p[2] = tmp;
	p[3] = (has_alpha) ? p[3] : 0xff;
	# else
	tmp = p[0];
	p[0] = (has_alpha) ? p[3] : 0xff;
	p[3] = p[2];
	p[2] = p[1];
	p[1] = tmp;
	# endif
	p += pixbuf_n_channels;
	}
	}

	gtk_image_set_from_pixbuf(gtkimage, pixbuf);
	g_object_unref(pixbuf);
	}
	#endif /* !POPPLER_WITH_GDK */

	static void pgd_page_set_page(PgdPageDemo demo, PopplerPage page)
	{
	#ifdef POPPLER_WITH_GDK
	GdkPixbuf *thumbnail;
	#else
	cairo_surface_t *thumbnail;
	#endif
	gchar *str;

	str = page ? g_strdup_printf("%d", poppler_page_get_index(page)) : NULL;
	gtk_label_set_text(GTK_LABEL(demo->index), str);
	g_free(str);

	if (page) {
	str = poppler_page_get_label(page);
	gtk_label_set_text(GTK_LABEL(demo->label), str);
	g_free(str);
	} else {
	gtk_label_set_text(GTK_LABEL(demo->label), NULL);
	}

	if (page) {
	gdouble width, height;

	poppler_page_get_size(page, &width, &height);
	str = g_strdup_printf("%.2f x %.2f", width, height);
	gtk_label_set_text(GTK_LABEL(demo->size), str);
	g_free(str);
	} else {
	gtk_label_set_text(GTK_LABEL(demo->size), NULL);
	}

	str = page ? g_strdup_printf("%.2f seconds", poppler_page_get_duration(page)) : NULL;
	gtk_label_set_text(GTK_LABEL(demo->duration), str);
	g_free(str);

	#ifdef POPPLER_WITH_GDK
	thumbnail = page ? poppler_page_get_thumbnail_pixbuf(page) : NULL;
	#else
	thumbnail = page ? poppler_page_get_thumbnail(page) : NULL;
	#endif
	if (thumbnail) {
	gint width, height;

	poppler_page_get_thumbnail_size(page, &width, &height);
	str = g_strdup_printf("%d x %d", width, height);
	gtk_label_set_text(GTK_LABEL(demo->thumbnail_size), str);
	g_free(str);

	#ifdef POPPLER_WITH_GDK
	gtk_image_set_from_pixbuf(GTK_IMAGE(demo->thumbnail), thumbnail);
	g_object_unref(thumbnail);
	#else
	image_set_from_surface(GTK_IMAGE(demo->thumbnail), thumbnail);
	cairo_surface_destroy(thumbnail);
	#endif
	} else {
	str = g_strdup("<i>No thumbnail found</i>");
	gtk_label_set_markup(GTK_LABEL(demo->thumbnail_size), str);
	g_free(str);

	gtk_image_set_from_icon_name(GTK_IMAGE(demo->thumbnail), "image-missing", GTK_ICON_SIZE_DIALOG);
	}
	}

	static void pgd_page_get_info(GtkWidget button, PgdPageDemo demo)
	{
	PopplerPage *page;

	page = poppler_document_get_page(demo->doc, demo->page);
	pgd_page_set_page(demo, page);
	g_object_unref(page);
	}

	static void pgd_page_page_selector_value_changed(GtkSpinButton spinbutton, PgdPageDemo demo)
	{
	demo->page = (gint)gtk_spin_button_get_value(spinbutton) - 1;
	}

	GtkWidget pgd_page_create_widget(PopplerDocument document)
	{
	PgdPageDemo *demo;
	GtkWidget *vbox;
	GtkWidget hbox, page_selector;
	GtkWidget *button;
	GtkWidget *frame;
	GtkWidget *table;
	GtkWidget *label;
	GtkWidget *thumnail_box;
	gchar *str;
	gint n_pages;
	gint row = 0;

	demo = g_new0(PgdPageDemo, 1);

	demo->doc = g_object_ref(document);

	n_pages = poppler_document_get_n_pages(document);

	vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 12);

	hbox = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 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_page_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 Info");
	g_signal_connect(G_OBJECT(button), "clicked", G_CALLBACK(pgd_page_get_info), (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);

	hbox = gtk_box_new(GTK_ORIENTATION_HORIZONTAL, 6);

	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>Page Properties</b>");
	gtk_frame_set_label_widget(GTK_FRAME(frame), label);
	gtk_widget_show(label);

	table = gtk_grid_new();
	gtk_widget_set_margin_top(table, 5);
	gtk_widget_set_margin_bottom(table, 5);
	#if GTK_CHECK_VERSION(3, 12, 0)
	gtk_widget_set_margin_start(table, 12);
	gtk_widget_set_margin_end(table, 5);
	#else
	gtk_widget_set_margin_left(table, 12);
	gtk_widget_set_margin_right(table, 5);
	#endif
	gtk_grid_set_column_spacing(GTK_GRID(table), 6);
	gtk_grid_set_row_spacing(GTK_GRID(table), 6);

	pgd_table_add_property_with_value_widget(GTK_GRID(table), "<b>Page Index:</b>", &(demo->index), NULL, &row);
	pgd_table_add_property_with_value_widget(GTK_GRID(table), "<b>Page Label:</b>", &(demo->label), NULL, &row);
	pgd_table_add_property_with_value_widget(GTK_GRID(table), "<b>Page Size:</b>", &(demo->size), NULL, &row);
	pgd_table_add_property_with_value_widget(GTK_GRID(table), "<b>Page Duration:</b>", &(demo->duration), NULL, &row);

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

	gtk_box_pack_start(GTK_BOX(hbox), frame, TRUE, TRUE, 0);
	gtk_widget_show(frame);

	frame = gtk_frame_new(NULL);
	gtk_frame_set_shadow_type(GTK_FRAME(frame), GTK_SHADOW_NONE);
	gtk_frame_set_label_align(GTK_FRAME(frame), 0.5, 0.5);
	label = gtk_label_new(NULL);
	gtk_label_set_markup(GTK_LABEL(label), "<b>Page Thumbnail</b>");
	gtk_frame_set_label_widget(GTK_FRAME(frame), label);
	gtk_widget_show(label);

	thumnail_box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 6);
	gtk_widget_set_margin_top(thumnail_box, 5);
	gtk_widget_set_margin_bottom(thumnail_box, 5);
	#if GTK_CHECK_VERSION(3, 12, 0)
	gtk_widget_set_margin_start(thumnail_box, 12);
	gtk_widget_set_margin_end(thumnail_box, 5);
	#else
	gtk_widget_set_margin_left(thumnail_box, 12);
	gtk_widget_set_margin_right(thumnail_box, 5);
	#endif

	demo->thumbnail = gtk_image_new();
	gtk_box_pack_start(GTK_BOX(thumnail_box), demo->thumbnail, TRUE, TRUE, 0);
	gtk_widget_show(demo->thumbnail);

	demo->thumbnail_size = gtk_label_new(NULL);
	g_object_set(G_OBJECT(demo->thumbnail_size), "xalign", 0.5, NULL);
	gtk_box_pack_start(GTK_BOX(thumnail_box), demo->thumbnail_size, TRUE, TRUE, 0);
	gtk_widget_show(demo->thumbnail_size);

	gtk_container_add(GTK_CONTAINER(frame), thumnail_box);
	gtk_widget_show(thumnail_box);

	gtk_box_pack_start(GTK_BOX(hbox), frame, TRUE, TRUE, 0);
	gtk_widget_show(frame);

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

	g_object_weak_ref(G_OBJECT(vbox), (GWeakNotify)pgd_page_free, (gpointer)demo);

	return vbox;
	}