static void
xps_page_cb (GXPSPage *page, gdouble width, gdouble height, gpointer data)
{
GError *error = NULL;
TIFF *tif = data;
cairo_surface_t *surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width / 96.0 * dpi, height / 96.0 * dpi);
cairo_t *cr = cairo_create (surface);
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
cairo_scale (cr, dpi / 96.0, dpi / 96.0);
if (!gxps_page_render (page, cr, &error)) {
g_warning ("Unable to render page: %s", error->message);
g_clear_error (&error);
}
write_surface_to_tiff (surface, tif);
cairo_destroy (cr);
cairo_surface_destroy (surface);
}
static void
page_changed_callback (GtkSpinButton *button,
GXPSView *view)
{
GXPSPage *xps_page;
gint page;
gdouble width, height;
cairo_t *cr;
GError *error = NULL;
page = gtk_spin_button_get_value_as_int (button);
xps_page = gxps_document_get_page (view->doc, page, &error);
if (error) {
g_printerr ("Error getting page %d: %s\n", page, error->message);
g_error_free (error);
return;
}
gxps_page_get_size (xps_page, &width, &height);
cairo_surface_destroy (view->surface);
view->surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
width, height);
cr = cairo_create (view->surface);
gxps_page_render (xps_page, cr, &error);
if (error) {
g_printerr ("Error rendering page: %d: %s\n", page, error->message);
g_error_free (error);
}
cairo_destroy (cr);
gtk_widget_set_size_request (view->darea, width, height);
gtk_widget_queue_draw (view->darea);
g_object_unref (xps_page);
}
