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Current File : //proc/self/root/usr/share/emscripten/tests/poppler/glib/demo/page.c /*
* 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_stock (GTK_IMAGE (demo->thumbnail),
GTK_STOCK_MISSING_IMAGE,
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, *alignment;
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_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_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_hbox_new (FALSE, 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);
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 (3, 2, FALSE);
gtk_table_set_col_spacings (GTK_TABLE (table), 6);
gtk_table_set_row_spacings (GTK_TABLE (table), 6);
pgd_table_add_property_with_value_widget (GTK_TABLE (table), "<b>Page Index:</b>",
&(demo->index), NULL, &row);
pgd_table_add_property_with_value_widget (GTK_TABLE (table), "<b>Page Label:</b>",
&(demo->label), NULL, &row);
pgd_table_add_property_with_value_widget (GTK_TABLE (table), "<b>Page Size:</b>",
&(demo->size), NULL, &row);
pgd_table_add_property_with_value_widget (GTK_TABLE (table), "<b>Page Duration:</b>",
&(demo->duration), NULL, &row);
gtk_container_add (GTK_CONTAINER (alignment), 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);
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);
thumnail_box = gtk_vbox_new (FALSE, 6);
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 (alignment), 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;
}
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