/* See LICENSE file for license and copyright information */

#include <callbacks.h>
#include <girara.h>
#include <stdlib.h>
#include <gtk/gtk.h>

#include "zathura.h"
#include "ft/document.h"

gboolean
cb_destroy(GtkWidget* widget, gpointer data)
{
  if(Zathura.UI.session) {
    girara_session_destroy(Zathura.UI.session);
  }

  return TRUE;
}

void
buffer_changed(girara_session_t* session)
{
  g_return_if_fail(session != NULL);

  char* buffer = girara_buffer_get(session);

  if(buffer) {
    girara_statusbar_item_set_text(session, Zathura.UI.statusbar.buffer, buffer);
    free(buffer);
  } else {
    girara_statusbar_item_set_text(session, Zathura.UI.statusbar.buffer, "");
  }
}

void
cb_view_vadjustment_value_changed(GtkAdjustment *adjustment, gpointer data)
{
  if(!Zathura.document || !Zathura.document->pages || !Zathura.UI.page_view) {
    return;
  }

  /* get current adjustment values */
  gdouble lower = gtk_adjustment_get_lower(adjustment);
  gdouble upper = gtk_adjustment_get_lower(adjustment);

  /* find page that fits */
  for(unsigned int page_id = 0; page_id < Zathura.document->number_of_pages; page_id++)
  {
    zathura_page_t* page = Zathura.document->pages[page_id];
    double begin = page->offset;
    double end = page->offset + page->height;

    if( begin <= 10 ) { // FIXME
      /* render page */
      GtkWidget* image = zathura_page_render(page);
      if(!image) {
        printf("error: rendering failed\n");
        return;
      }

      /* add new page */
      gtk_box_pack_start(GTK_BOX(Zathura.UI.page_view), image, TRUE,  TRUE, 0);
      gtk_box_reorder_child(GTK_BOX(Zathura.UI.page_view), image, page->number);
    }
  }
}